What are the steps in the precision mold processing process?

Therefore, not every enterprise can master the mold manufacturing methods and processes. When choosing a supplier, we must understand its processing capability, not only depends on the hardware equipment, but also combines the management level, processing experience and technical strength.

1. Design steps of precision mold processing technology?

1. Bottom processing, processing quality assurance,

2. Accurate billet benchmark, check two-dimensional, three-dimensional shape,

3. 2D, 3D surface rough processing, no need to install non-workpiece plane design (including safety platform surface, buffer mountable surface, pressure plate through plane, side datum) during the plane design process.

4. Find out the correct accuracy of the side datum before semi-finishing.

5. Semi-finishing 2D, 3D shape surfaces, finishing and various equipment are mounted on one side (including two limit block mounting surfaces and contact surfaces) mounting plate mounting surface and backrest, punch mounting surface, waste cutter mounting surface and The back and spring are responsible for the mounting surface and the contact surface, the working surface, the wedge mounting surface and the back surface are caused by the time limit of each project, and the semi-finishing each guide surface, guide hole, the remaining machining process design reference hole and height are used as the reference surface, and record information data.

6. Check the accuracy of the review processing technology.

7, fitter trimming process.

8. Before trimming, the datum surface of the process design datum hole should be aligned, and the allowance of the insert can be checked.

9. Finishing two-dimensional, three-dimensional, side punch and hole position, finishing process reference hole and height reference, finishing guide surface and guide hole.

10. Check and recheck the machining accuracy.

The above is the relevant content in the process of precision mold processing. For the same mold, different manufacturers sometimes have large price differences. Users should measure according to their own requirements. Hope this article can help you. If you need to make molds, welcome to consult.

What are the requirements for the materials for metal stamping processing?

When selecting the material of stamping parts, the metal stamping manufacturer must not only tap the function of use, but also write out the functional requirements of stamping processing and subsequent processes. What are the requirements for stamping materials for metal stamping parts?

1. Stamping parts have good stamping forming function.

For forming processes, such as stretching, bending, pitch difference, convex hull, etc. The material should have good stamping and forming function, that is, it has good crack resistance and good fit, otherwise the product will be easily deformed, broken, etc., making it difficult to repair the mold. For individual processing, a certain plasticity is required.

2. Do stamping parts have high nominal characteristics? The nature of the material should be flat and smooth, and its integrity is at risk. The material properties are good, it is not easy to break during molding, the mold is not easy to wear, and the quality of the parts is good.

3. The thickness of the stamping parts must meet the national standards.

Since a certain mold is only suitable for materials within a certain thickness range, if the thickness of the material is too small but too large, it will not only affect the quality of the parts, but also lead to the appearance of the product. In the process of proofing, trimming, etc., due to the large positive deviation of the thickness, it is easy to cause damage to the mold or the press.

The hardness test of the metal blanking material is important to determine whether the purchased sheet metal annealing degree is suitable for the subsequent stamping processing.

The industry calls stamping presses sheet metal forming, but there are some differences. Slab forming refers to the processing technology of slab, thin-walled tube, thin steel, etc. as raw materials, which is collectively referred to as sheet forming. In this environment, the deformation in the direction of the thick plate is usually not considered.

The above is about the relevant content of metal stamping parts processing materials. Generally speaking, the advantage of metal stamping parts processing is the metal stamping process. Because the surface of the material is not damaged, the surface quality is good, the surface is smooth and beautiful, and the metal surface is painted, electroplated, and waiting for the surface. Punishment is facilitated. Hope the above will be helpful to readers.

How to solve the springback problem of stamping parts?

1. Stress change curve after unloading

(1) From ordinary plates to high-strength steel plates, stampings of different materials and strengths have different yield strengths. The higher the yield strength of the sheet, the easier it is to spring back. In the thick plate components, hot-rolled carbon steel sheets or hot-rolled low-alloy high-strength steel sheets are used as materials. The surface quality of the hot-rolled sheet is higher than that of the cold-rolled sheet, the thickness is small, the mechanical properties are unstable, and the elongation is low.

2. Stress change before and after springback

(2) In the forming process, the thickness of the material has an important influence on the bending performance of the plate. When the thickness of the plate increases, the springback phenomenon gradually decreases. With the increase of the plate thickness, the plastic deformation increases, the elastic recovery deformation increases, and the springback decreases.

3. Tangential stress of board contacts

With the continuous improvement of the quality level of thick plates, the problem of dimensional accuracy of parts caused by springback is becoming more and more serious. In order to understand the resilience properties and dimensions of the parts, take corresponding countermeasures and measures, carry out mold design and process debugging.

The ratio of the bending radius to the thickness of the thick plate is small, and the stress change in the thickness direction cannot be missed.

Parts of different shapes vary greatly in how they spring back on the part. Parts with complex shapes usually increase the number of moldings. They spring back when they are not formed in place, and some fractals are easier to spring back, such as U-shaped pieces, so bixu considers springback compensation when analyzing and forming.

(4) The greater the bending angle, the greater the accumulation of rebound value, and the rebound will generate tension. The deformation length of the stamping part increases with the increase of the bending angle.

(5) When designing the mold, the gap between the molds should not exceed twice the thickness of the material in the working part, and integrate the product into it. In order to obtain better material flow, the partial molding of the mold should be carried out after the mold is processed. Especially for bending dies, the larger the working gap, the larger the springback. When the thickness range of the sheet is small and the springback is large, it is difficult to determine the formwork gap well.

(6) The bending radius is proportional to the amount of springback, so the greater the bending degree, the more difficult it is for the elbow to be bent.

(7) The molding process is an urgency to limit the springback value. Generally speaking, the springback of positive bending is better than that of free bending. If the machining results of the same batch of stampings are the same, the bending force required to correct the bending is much greater than the bending force required for the free bending. Therefore, if both methods involve similar bending forces, the end result will be different. The greater the correcting force required to correct the bending, the smaller the springback of the stamped part, and the correcting moment will elongate the fibers in the deformed area to achieve the forming effect. When the elbow is unloaded, the surface and inner fibers are shortened, but the springback direction of the two sides is opposite, which reduces the outward springback of the stamping part to a certain extent.

The above is how to solve the springback problem of automobile stamping parts. In short, the commonly used materials for automotive stamping parts must not only meet the technical standards of the designed products, but also meet the requirements of the processing technology such as drilling, electroplating, and cleaning after stamping. I hope it helps readers.

What are the principles for the selection of stamping die materials

Stamping parts are common processed parts in daily life. They are widely used due to their excellent processing properties. The processing principle of stamping parts is to use stamping equipment and stamping dies to process materials, so stamping dies are generally specialized. Sometimes, a complex part requires several sets of molds to be processed and formed, and the molds are manufactured with high precision and high technical requirements. It is a technology-intensive product. In addition, if the quality of the stamping die is not good, problems are likely to occur during the processing, so the selection of stamping die materials also has certain requirements.

First, the selection principle of stamping die material

1. Production batch, when mass production of stamping parts, the die punch and die material should be selected from high-quality, wear-resistant die steel. Other process structural components and mold auxiliary structural components also need improvement. When the batch is small, the performance requirements of the material can reduce the cost.

2. The performance of the material to be stamped. The conditions of use of the die. When the material to be stamped is hard or the deformation resistance is large, the convex and concave die of the die should be made of materials with good wear resistance and high strength. The aluminum bronze die has better adhesion resistance, so brushed stainless steel can be used. However, the guide column sleeve requires wear resistance and good toughness, so mild steel is mostly carburized and hardened. The main disadvantage of carbon tool steel is poor hardenability. When the section size of the stamping part is large, the center hardness after quenching is still low. . For fixing plate and stripping plate, it not only has sufficient strength, but also requires less deformation during the working process. In addition, the performance of parts can also be improved by cold and cryogenic treatment, by vacuum treatment and surface strengthening. For the cold extrusion die with harsh working environment of the convex and concave die, a die steel with sufficient hardness, strength, toughness, wear resistance and other comprehensive mechanical properties is selected, and it also has a certain red hardness and thermal fatigue strength.

3. Material properties, considering the cold and heat treatment properties of the material and the status of the factory.

In addition, it is common for blanking dies to burst during use, but in severe cases it is common for a die to be divided into several parts at a time. Of course, there are many reasons for the direct cracking of the template, and the procurement of materials from the mold design to the stamping process can all have an effect.

2. The main reasons for die bursting are as follows:

1. Unsmooth blanking.

In production, there is no demagnetization treatment and no demagnetization phenomenon; in production, there are broken needles, springs and other materials; when assembling the mold, there is no leakage, rolling and blocking, which is a common phenomenon. If you do not pay attention during the assembly process, if there are too many blanking holes or mold jams, air leakage, rolling blockage and foot blockage are prone to occur during the assembly process. This is a common phenomenon. It can easily happen if you are not careful during assembly, if there are too many blanking holes or if the mold has spacers.

2. Design process.

The strength of the die is not enough, the distance between the knife edges is too close, the structure of the die is unreasonable, the number of templates is insufficient, and there is no pad foot.

3. Heat treatment: improper quenching and tempering process leads to deformation.

The experimental results show that the heat treatment quality of the mold has a great influence on the performance and service life of the mold. Through the analysis and statistics of the causes of mold failure, it can be seen that mold failure accidents caused by improper heat treatment account for about 40%.

How to solve the problem of necking and pulling of stamping parts when processing aluminum alloy stamping parts of automobiles

Compared with steel parts, the forming process of aluminum parts is more prone to necking and cracking. There are two main reasons for this problem:

First, the stamping formability of the aluminum alloy sheet with the same plastic hardening index n value is much lower than that of the cold-rolled steel sheet. The thickness of the aluminum itself is lower than the anisotropy index, the deep drawability is large, the elongation after partial fracture is low, the forming window is narrow, and the forming capacity is only 1/3 of that of the steel.

Second, aluminum has the characteristics of timeliness. As the heat treatment time increases, the strength, hardness, plasticity and toughness of aluminum itself decrease. Generally speaking, it takes 6 months to produce aluminum coils after heat treatment. In the 6-month production window, the mechanical properties of different batches of aluminum before production vary greatly due to aging, and the difference between mold margin and material properties Poor matching, necking and splitting occur from time to time.

1. The shrinkage treatment plan of the stamping plant is as follows

1. Plate aging control

Aluminum sheet has aging properties, the strength increases with time, the hardness increases, and the plasticity decreases. Before stamping production, due to the different conditions such as the manufacturing process of the plate, the factory state after heat treatment, transportation, and temperature, the mechanical properties of the aluminum plate material before stamping production are quite different, which has a great impact on the production adjustment of the mold, and also leads to frequent production in continuous production. There are problems such as necking and pulling cracks. In order to solve this problem, we can first accumulate the range of mechanical properties for stable production of the mold, and then use the aging characteristics of aluminum to master the timeliness law, and stop using the aluminum with a low yield, so that it is naturally aged, and the yield strength is increased to After the expected range can be produced.

2. Early warning and intermittent supply of aluminum plate mechanical properties.

Renovate the board material card, and print all the board information on the material card, which is convenient for problems in the production process, and can quickly compare and analyze the performance of the material. In addition, the index data of performance problems in production is also summarized and summarized, and the performance early warning range of each aluminum alloy stamping part is formed, and the blue card material is used beyond the time range, which plays a role in early warning of defects.

3. Use digital methods such as Autoform and ATos to help optimize the pulling and cracking of the neck region.

The die set position is prone to necking, especially when the theoretical necking maximum point reported in the drawing simulation or exceeds the safety margin line (FLC), which can be optimized in digital software and equipment.

4. Intelligent grid monitoring system.

According to the experience, the position where the aluminum parts are prone to necking and fracture is summarized, and the mold margin monitoring is carried out on these parts. The main application is the grid strain analysis device (4×5 million pixel three-dimensional stereo camera), the hand-held camera shoots, and the specific situation of the grid strain in the monitoring area can be obtained. It takes about 1 hour from the shooting to the end of the computer operation. The advantage is that it is easy to operate , Fast and easy to calibrate. After the analysis report is output, it will prompt which location is safe and which location is risky. For risk points, mold maintenance personnel evaluate further optimization.

5. Develop equipment with special functions.

In the current stamping parts production equipment, the drawing lower air cushion can realize the function of segmental pressure. The cover plate is set with a small pressure in the early stage of forming, and then the air cushion pressure is set under the segment. The segmental pressure setting can effectively solve the cracking problem of deep-drawn aluminum alloy stampings.

The above is the relevant content of automobile aluminum alloy stamping parts processing. Any machining parts need different machining plans according to their materials and characteristics, and solve problems in a timely manner during the machining process. I hope the above will be helpful to readers.

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In the processing industry, molds are indispensable equipment, and different processing industries choose different molds. Metal stamping dies and plastic processing dies are widely used in industrial production. As for the difference between them, many people will say that metal stamping dies are made of metal, and plastic processing dies are made of plastic. What is the essential difference between metal mold and plastic mold? What are their main areas of application? To understand the difference between the two, we must first understand what is a metal stamping die and what is a plastic die.

1. The difference between metal mold and plastic mold

1. Metal molds refer to stamping parts processed by using various presses and special tools in industrial production to process metal materials according to the shape required by the finished product. This special tool is often called a metal mold.

2. Plastic mold is a combination of plastic molds, which can be used for compression molding, extrusion molding, injection molding, blow molding and low plastic, and can be used as mold punch, die and auxiliary molding system. A range of plastic products that can be processed in various shapes and sizes.

3. From the perspective of the role of the mold, the metal mold is a mass production tool for metal products. The materials used are generally iron or copper or aluminum, the plastic molds are plastic products, and the raw materials used are also plastic raw materials.

4. The most fundamental difference between metal molds and plastic molds is the structure of the molds. Plastic molds have cooling systems, but metal molds do not. The molding principle of the product is also different. The plastic mold is cooled and formed after injection molding, and the metal mold is punched into a standard thickness steel plate.

5. Hardware molds and plastic molds are made of steel. Stamping metal molds generally use cold steel. If it is a pressure injection mold, hot-working steel is required. The plastic mold is generally hot-working steel. The mold is more complicated. Mold) There is no gating system and cooling system, which can be understood as: plastic mold processing is to cool plastic flow into the cavity in a closed space for cooling and forming.

Second, the metal stamping die has the following advantages

Due to the use of mold processing, metal stamping parts that cannot or are difficult to manufacture by other processing methods, are thin-walled, lightweight, have good rigidity, good surface quality and complex shapes can be obtained. The dimensional accuracy of the blanked parts is guaranteed by the mold, and the characteristics are exactly the same, so the general press can produce dozens of parts per minute, while the high-speed press can produce hundreds of parts per minute. Therefore, it is an efficient processing method.

3. Plastic processing molds have the following advantages

Plastic molds have high tolerances, low repetitive labor costs, and can use a variety of materials. The waste loss is far less than that of metal molds, and there is no need to continue to improve parts after plastic molds are formed.

The above is the relevant content of metal stamping dies and plastic dies. These two molds are suitable for different industries and different processing requirements, so the production methods of the molds will also be different. I hope the above will be helpful to readers.

Processing characteristics of metal stamping parts and sample processing of simple stamping dies

Metal stamping parts are very common in daily life, so the metal stamping processing industry has been widely used. Currently, there are more than ten hardware products and hundreds of products on the metal market. Mainly include: locks, tensioning, door and window hardware, home decoration hardware, HVAC hardware, architectural decoration hardware, tools, bathroom hardware, kitchen hardware, etc. But in the processing of metal stamping parts, some problems will inevitably be encountered, how to deal with and deal with? The following editors of Zhejiang Baifudu Electromechanical will take you to understand the processing characteristics of metal stamping parts and the simple processing of stamping mold samples!

Metal stamping parts rely on presses and dies to apply external forces to plates, steel bars, pipes and profiles to plastically deform or separate, so as to obtain the forming and processing methods of workpieces of desired shape and size. In the stamping process, if the quality of the section and the dimensional accuracy of the workpiece are high, it can be repaired or used directly after stamping. In the production process of precision stamping parts, in order to improve the stability of stamping parts, the number of processes must be increased.

Metal stamping products have a long manufacturing cycle, many processes, and many abnormal situations (involving rework, scrap, split, replenishment, replacement, buffer materials, etc.), and the production process requires tracking and cost analysis. In addition, during the production process, customers can insert orders in time according to market changes, which is unpredictable by hardware companies. Relying on manual management, of course, cannot meet the change requirements of customer orders. Only after the order is confirmed, can it be included in the management. Sometimes the order status changes, but there is no timely response, often in a hurry. This shows that how to start information construction has become the primary problem facing hardware enterprise decision makers.

As a highly isolated industry, metal stamping parts often encounter bottlenecks under traditional manual management in daily production. First of all, the market competition is fierce, and user needs are constantly changing. Many hardware companies mainly focus on small batches and medium batches, and the design and manufacturing process of products often change according to customer needs. Therefore, hardware companies need to develop a good production plan to improve the flexibility of production and enable it to adapt to the market. The author believes that the products of general hardware enterprises are produced according to orders (contracts), the product structure is complex, the parts are many, outsourced and self-made. In the production process, relying on traditional manual management to rationally optimize production, the workload of production management is very large. The information and data of the department cannot be shared in a unified standard and interface, and it is inevitable that the delivery time cannot be scientifically controlled, which affects the execution rate of the order.

Second, metal stamping parts manufacturers have many outsourcing factories, involving many outsourcing factories, using traditional manual management methods, how to track and control the product quality, price, reputation of the metal stamping factory, and how the purchasing department controls the advance quantity, Ensuring that production does not go wrong, does not cause inventory backlog, and ensures a more reasonable level of capital occupation is a headache for hardware companies.

In many cases, the number of operations of a bent part is mainly determined by the complexity of its structural shape, which is determined by the number of bending angles. If the bending radius of the curved part is smaller than the allowable value, an additional forming process is required. Similarly, the number of processes and material properties of the drawn part, the drawing height, the number of drawing steps, the drawing diameter, the material thickness and other conditions are also affected and need to be determined by drawing process calculations. If the corner radius of the drawn part is small, or there is a certain requirement for dimensional accuracy, another forming process needs to be added after drawing. According to this model, the number of processes to determine stamping parts should also meet the conditions of the company’s existing mold capacity and stamping equipment. The molding ability should ensure mold processing, and the requirements for assembly accuracy should be improved accordingly, otherwise the number of processes can only be increased. For simple blanking parts, single-pass stamping dies are used; on the contrary, due to the limitation of die structure or strength, the inner and outer contours of complex stamping dies should be divided into multiple parts, requiring multiple stamping processes.

Recently, after receiving quotations for metal stamping products, many customers suggest to make some simple stamping dies to make some samples for testing. For these customers, we recommend customers not to make simple molds from the beginning. Especially for the following reasons:

1. Stamping parts that basically meet the requirements of the drawings cannot be produced.

The customer wants to use a simple mold as a sample, but has not confirmed the product in the early stage, and wants to spend less mold cost to test the sample. However, dimensional accuracy cannot be guaranteed for products manufactured by simple molds, even if the customer cannot be sure of the dimensional failure caused by the product.

2. A simple die cannot guarantee the uniformity of stamping parts.

A simple die cannot guarantee that each die is the same, because a simple die often does not have accessories such as positioning and guide posts, and there will be different offsets for each punch, which leads customers to inspect the stamping parts. , no satisfactory results can be obtained.

3. Failure to mass-produce simple stamping dies will result in waste.

The simple-packed punching meme has a simple structure and low precision, and can only be mass-produced after the customer confirms the sample. This will cause a lot of waste.

In fact, if the customer does not confirm the stamping product in the later stage, there is basically no need to open a simple die for sample testing, and other processing techniques can be considered to achieve it. Most steels are stamped, and punching can be made by other methods with ribs, ribs, undulations, or flanging to increase stiffness.

The above is the relevant content of metal stamping parts processing. In short, processing products through stamping process has become an important means and development direction of modern industrial production. However, the disadvantages of stamping parts are high mold requirements, complex manufacturing, long cycle and high manufacturing cost, which limit small batch production. Therefore, most stamping parts are mass-produced, which also reflects the importance of molds. I hope it helps readers.

How to solve common problems in drawing parts processing?

The drawing process is a commonly used processing method in machining and production. However, in the actual operation of many factories, it is found that the molds for drawing parts are easily pulled. We should change our approach. Below, Zhejiang Baifudu Electromechanical will introduce the relevant knowledge to you. For the above problems, the adhesive wear should be reduced and the characteristics of the contact pair should be changed before the realization. Let us briefly analyze how to solve common problems in the processing of drawing parts?

1. In terms of original data, after surface treatment of the original data, such as phosphating, spraying or other appearance treatment, a non-metallic mold layer is formed on the appearance of the forming data, which can greatly reduce or eliminate the strain on the workpiece. . This method is usually expensive and requires additional production equipment and production processes. Although this method sometimes has certain effects, it is rarely used in actual production.

2. Adding a layer of metal workpiece and mold PVC film between the mold and the forming data can sometimes deal with the stretching problem of the workpiece. In terms of production line organization, in terms of continuous supply of film, in terms of cycle production, each workpiece needs to add a layer of film to affect the production speed. This method is generally expensive and generates a large amount of waste. This method is desirable for the production of small batches of large workpieces. When some forming loads are very small, the problem of workpiece strain can be solved by adding lubricating oil or adding lubricating oil EP lubricant.

3. Modify the die convexity, the concave die data or the surface treatment of the convex and concave die or select the appropriate die data, so that the contact properties of the tensile data like the convex and concave die have changed. From a practical point of view, this is an economical and practical treatment method and has been widely used. In short, there are many ways to deal with the surface strain of deep-drawn parts and punches. The specific method should be determined according to the size of the workpiece and the load to determine the type of processing materials used in the production batch.

The shape of the drawing workpiece is complex and diverse, and the dimensional accuracy is high. The processed product is equal to the cut product. The machining section is very flat, smooth and bright, which is more difficult than other machining processes. High-precision fine-blanking gears can fine-blank gears, and the drawn parts have clear contours and small depression angles. In the process of processing, the drawing parts mainly rely on the press pressure to stamp metal or non-metal materials. During the processing of drawn parts, the precision of the workpiece is very high, which can reach the micron level. Compared with other processed parts, this product has significant advantages such as lightness, thinness, uniform distribution, and pressure resistance. In the process of processing, it can be mass-produced, shorten the processing time, one-time molding, without other processing. This product is mainly used for automobile handbrakes, cars, motorcycles and other products. It is an economical and efficient electromechanical component.

Next, we’ll educate you about stretched pieces so you can understand them clearly by learning. In this way, you can add some expertise to the products on this website.

1. Is blanking-drawing suitable for shallow drawn parts or deep drawn parts?

Blanking-drawing is suitable for shallow drawing, because the steel plate is pressed when blanking, and the steel plate is also pressed when deep drawing. Therefore, on this basis, there will be the above-mentioned corresponding theories. There is no doubt about that.

2. How to wire the tie rod?

In this case, in the eyes of Zhejiang Baifudu Electromechanical Manufacturer, it cannot use the ordinary thread rolling method because it is not applicable, but first thread a mandrel on the tie rod, and then carry out the thread rolling operation to complete the smooth operation. Work.

3. How to prevent the problem of pulling the rod?

In order to prevent the problem of drawing hair, the methods we can take may be aspects that we should pay attention to, mainly including the following aspects:

(1) The appearance of the die used should be smooth, and smooth work should be done during deep drawing;

(2) The hardness of the mold material is too low.

(3) Third, do a good job of cleaning the stretched parts, and there should be no dust and dirt on it.

For stretched parts, it can be said that the above problems are very important and basic, and there is no such thing, so I hope you can study and understand carefully so that you can master it in time, so that you can have new harvests, and the products have some development and development in the process of learning. Breakthroughs can also prevent yourself from not harvesting.

I hope you can take and solve the above problems seriously, and know how to solve the above problems correctly, so that even if you encounter them in actual work, you can deal with them calmly, solve them in time, and avoid some unnecessary problems or troubles. Hope it will be useful to readers.

What is the reason for the punch falling off in the processing of automobile stamping parts?

In the process of automobile stamping, sometimes the die punch will suddenly fall off, so what causes the punch to fall off? In fact, the main reason for the analysis of punch dropout is that the punch is not strong. What is the reason why the punch is not fixed firmly? The main reasons are as follows:

1. For the fixed structure of the punch that is pressed into the interference, because the required amount of interference cannot be met during the manufacturing process, the method of “twisting and squeezing” is used to remedy it, so that the punch is easy to loosen.

2. If the punch is not fixed by steps or fasteners, punch thick, hard or viscous materials. If the gap between the stripper hole and the punch is too large, the discharge force will increase, causing the punch to pull out.

3. The rigidity of the punch or die frame is poor, and the punch is elastically deformed during punching, causing the punch to collide or get stuck with the stripper, increasing the unloading force and easily pulling out the punch.

4. The punch and die gap is too small, the working surface is rough, or the gap is sideways, which will increase the discharge force during punching and cause the punch to pull out.

5. When the punch is fixed with a low melting point alloy, there is no groove on the assembly side of the punch and the assembly hole of the punch fixing plate, which makes it easy to pull out the punch.

1. Why does gnawing occur during the processing of automobile stamping parts? How should it be prevented?

A bite is a touch blade. During the blanking process, a certain gap should be maintained between the die blades, and they should not collide with each other. There are four reasons for the collision of the blades.

1. Design: In terms of equipment, the punch is incorrect. If the punch is fixed by chiseling, it may cause the punch to loosen. Casting of low melting point alloys can also lead to punch loosening. The punching pressure is large, the punch root does not use a hard backing plate, and the lateral force of the punch is too large, which will cause the punch to loosen.

2. Molding: convex, concave mold or guide parts are not installed vertically.

3. The assembly of the upper and lower formwork, the fixed plate and the convex and concave formwork is not parallel.

The blanking gap is not uniform.

4. The installation of the punch does not meet the design requirements.

Second, the use of molds.

1. Repeated punching or stack punching, that is, stacking two or more blanks in a place where the blanks do not move for punching.

2. The scraps or blanking parts left on the mold are not removed in time.

Third, mold maintenance problems.

1. The wear of the mold parts is large, and the fitting clearance caused by the wear of the guide parts is too large, which cannot be repaired in time.

2. The mold maintenance assembly is loose.

In order to avoid die gnawing, a die with a guide should be used as much as possible, especially for a die with a small blanking gap. The fixing method of the punch should be carefully considered, and the manufacturing of the mold should be firm and reliable. The composite punching die should pay special attention to operate in strict accordance with the punching operation rules, clean the surface of the die in time, and avoid repeated punching and stacking. Strengthen the maintenance and management of molds to ensure that the molds are in good condition. Hope it helps readers.

How to avoid damage in metal stamping die processing?

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1. How to avoid damage as follows:

1. The sliding hinge cannot be made of aluminum alloy material, but stainless steel material should be used.

2. Sliding windows with a width greater than 1 meter, or doors and windows with double-glazed glass, should be equipped with double pulleys or use movable pulleys.

3. Hardware accessories should be Z-terminals, door and window locks. Handles, etc. should be installed behind the window and door frame to ensure accurate position and flexible switching.

4. When using fastening screws to install hardware, there must be a metal backing plate, and the thickness of the backing plate is at least twice the pitch of the fasteners. It cannot be used to fix plastic profiles, and non-metallic linings cannot be used.

5. The type, specification and performance of the hardware accessories used should conform to the current national standards and relevant boundaries, and should be used in conjunction with the selected plastic steel doors and windows.

6. Pay attention to maintenance after installation to avoid corrosion. When used every day, lightly close and lightly open to avoid damage caused by hard opening of the hard tube.

How to inspect metal stampings? Rockwell hardness tester is used for hardness test of metal stamping parts. Such as: small, irregularly shaped stamping parts, can be used to detect small planes, can not be used for ordinary desktop Rockwell hardness tester.

PHP series Rockwell hardness tester is especially suitable for hardness testing of such stamping parts. Aluminum alloy stamping parts are common parts in the fields of metal processing and mechanical manufacturing. The processing of stamping parts is a processing method in which metal sheets and strips are separated or formed using molds. It has a wide range of applications.

The main purpose of the hardness inspection of blanking parts is to judge whether the annealing degree of the metal plate is suitable for the processing of stamping parts in the future. In the processing of different types of stamping parts, there are requirements for plates with different hardness levels. Webster hardness tester can be used to test the processing of stamping parts. When the data exceeds 13mm, it can be replaced by a barcol hardness tester, and a barcol hardness tester can be used for pure aluminum or low-hardness aluminum alloy sheets.

As far as the stamping industry is concerned, stamping is sometimes referred to as sheet metal forming, but it is slightly different. What we call sheet molding is a forming method of plasticizing raw materials such as thin plates, collectively referred to as sheet forming. In this case, the deformation in the direction of the thick plate is generally ignored.

Second, optimize the planning method of metal stamping parts.

The reasonable planning of the mold is the basis for improving the durability of the mold. In order to improve the durability of metal stamping dies, unreasonable factors in product forming should be fed back in time during die planning. If you plan to punch a small hole metal mold, the method of adding a guide sleeve should be used to strengthen the strength of the small hole mold punching needle. Also, the guide needle should be as short as possible. Decreased length equals increased strength.

3. Appropriate heat treatment of metal blanking parts.

High-quality metal stamping dies and the selection of plates should be properly heat treated to improve the durability of metal stamping dies. Such as quenching, vacuum heat treatment, etc.

Fourth, the rational use of metal stamping dies can ensure processing accuracy.

In terms of hardware mold life, mold accuracy has a great influence on mold life. Before making the mold, the mold must be installed. Commissioning the mold requires locating all the holes and installing the mold prior to production. When the mold is installed, the straightness of the support surface of the mold and the fixed plate, and the uniformity of the distance between the hardware mold and the guide sleeve have strict requirements on the guiding accuracy of the guide post. The higher the manufacturing and installation accuracy, the more accurate the machined parts will be, and the higher the durability of the metal mold will be.

Fifth, choose the correct amount of punching.

In order to improve the durability of the hardware blanking die, the blanking die with high precision and high rigidity should be selected. For stamping more than 30%, it is better to use the servo to control the punch. The servo is equivalent to a transformer, with constant current and stable voltage, which not only protects the durability of the machine tool, but also improves the service life of the mold.

6. Reasonable use and protection of molds.

In order to improve the durability of metal stamping dies, operators must regularly protect and maintain the dies under reasonable conditions of use. It is best to maintain and repair the metal stamping dies every day, which can effectively avoid the appearance of metal stamping dies.

According to the above related content of metal stamping die processing, metal stamping parts are light in weight, satisfactory in strength and rigidity, and can be processed into parts of various shapes and sizes according to different uses and materials, and have a wider range of applications. Hope the above content can be helpful to readers.

Assembly principles and technical requirements of metal stamping dies

Metal stamping molds belong to single product production. The key to die assembly of metal stamping parts is how to ensure that the relative positions of the convex, concave and related parts can work reasonably when the mold is closed, and punch it to meet the product requirements. Below, the editor of Zhejiang Baifudu Electromechanical will share with you the assembly principles and technical requirements of metal stamping dies!

All kinds of parts that are processed and put into assembly of metal stamping parts must meet the requirements of the assembly process specified by various parts; for example, the relative position dimensional accuracy and step distance accuracy of multiple punch fixing plates and various holes must meet the requirements of the concave die. , the requirements of the discharge plate, the bolts and pins on the backing plate pass through the holes, and can be drawn according to the size of the drawing. The quenching, upper and lower surfaces should be strictly ground and smooth, and the overall die installed on the upper and lower die bases should be removed. In addition to the processing of all the holes to meet the requirements of the graphics, it is also necessary to process the bolt holes and pin holes, which can be assembled after heat treatment and finishing. The fixed mold base and guide plate must be connected. When assembling the screw holes and pin holes on the guide plate, the corresponding holes on the die should be used for drilling and reaming; although the type and structural characteristics of the hardware blanking die are not All the same, the assembly method and installation sequence adopted are also different, but the assembly principles should be followed.

Some components that constitute the mold entity are processed into dimensions and tolerances according to the dimensions and tolerances marked on the drawings during the manufacturing process (such as troughs, punching punches, guide posts, guide sleeves, die shanks, etc.). These parts are usually direct mount, some parts are only some sizes in the manufacturing process that can be processed according to the drawings. Need to match the relevant size. Some require mixing or blending prior to assembly, others require mating during assembly. The dimensions marked in the figure are for reference only, such as the die seat guide bushes or guide post fixing holes on the multiple punch fixing plates. Plate bolt holes, pin holes, etc. that need to be connected).

Therefore, the metal stamping die assembly is suitable for centralized assembly, and the repair method and adjustment assembly method are mostly used in the assembly process to ensure the assembly accuracy. In this way, higher assembly accuracy can be achieved, and the standard of parts processing is reduced, thereby achieving the accuracy standard for parts. The technical requirements for metal stamping die assembly are as follows:

1. The precision of the die base should meet the standard requirements (JB/T8050-1999 “Technical Conditions for Die Sets” (JB/T8071-1995) in the relevant die precision testing. The height of the die seal should meet the standards specified in the drawings.

2. For the assembled die, the upper die should slide smoothly and reliably along the guide post and the upper die.

3. The gap between the protruding dies should meet the standard specified in the drawing, and the distribution should be uniform. The working strokes of the convex and concave molds meet the technical requirements.

4. The relative position of positioning and stopper should meet the drawing standard. The distance between the mold guide plates must be consistent with the distance specified in the drawing; the guide surface should be parallel to the center line of the feeding direction of the die; the guide plate is equipped with a side pressure device, and the side pressure plate can slide flexibly and work reliably.

5. The relative positions of the unloading and ejecting equipment should meet the design standards, and there should be no inclination or unilateral deflection in the work to ensure that the parts or wastes are unloaded in time and ejected smoothly.

6. The fastener assembly should be reliable. The length of the bolt thread should not be less than the diameter of the bolt when connecting steel components. When connecting castings, it should not be less than the diameter of the bolt, and the diameter of the bolt should not be less than 1.5 times; The length should be greater than 1.5 times the diameter of the pin; the end face of the pin should not be exposed. The surface of the lower die seat and other parts.

7. The blanking hole or discharge trough should be unobstructed to ensure that parts or waste cannot be discharged at will.

8. Standard components must be interchangeable. The fit of the fixing screws and positioning pins with their holes should be normal.

9. The installation size of the metal stamping die on the press must meet the standard of the selection equipment; the lifting parts must be safe and reliable.

10. The die for metal stamping parts should be tested under manufacturing conditions, and the punched parts should meet the design standards.

The above introduces the relevant assembly and technical requirements of metal stamping dies. Stamping dies are the key equipment for stamping parts processing and have a direct impact on the quality of stamping parts. As the saying goes, if you want to do good work, you must first sharpen your tools before you can produce qualified products. I just hope the above can be of some help to the readers.

How to prolong the service life of stamping die?

For stamping parts, it is more common in the industrial industry, and various types of stamping parts are widely used in various industries. The blanking die is also an indispensable process equipment in the stamping production process, because it plays a decisive role in improving the quality of the product and improving the production efficiency. However, the stamping die will also wear out in the process of use, so how should we prolong the service life of the stamping die? This is also the goal pursued by stamping parts processing plants.

The durability of the punching die is determined by the total number of parts produced by the punch and die after a period of work, due to frequent wear loss and working size, and can no longer meet the technical conditions of the parts. Once it is used from design, processing, assembly, adjustment and installation, there are many processes, long cycle and high processing cost. Therefore, for the die, in addition to requiring high production efficiency. The punched parts fully meet the quality requirements and technical conditions, and the durability of the stamping die itself is very important.

Therefore, in order to prolong the service life of the stamping die in the processing workshop, we must improve the durability of the stamping die. The following points should be paid attention to in the daily punching work:

1. Improve the precision die design

Reasonable punching die design is the basis for improving punching die durability. In order to improve the durability of stamping dies, effective measures should be taken to improve the durability of punching dies when designing stamping dies. For example, punch designs for punching often show the life of the punching die. For this type of blanking die, we should make the length of the thin punch as short as possible when designing, which can improve the strength. At the same time, a guide bush should be used to strengthen the protection of the fine punch.

In addition, in the design of the blanking die, the form of the die base, the installation method of the convex and concave die and the guide form should be fully considered, and the pressure center and the rigidity of the upper and lower template should be determined. Especially for the blanking die, the choice of the gap value has an important influence on its durability. In the design of the punching die, the die gap should be selected reasonably, and the value of the intermediate gap should not be too small, otherwise it will affect the life and durability of the die. The results show that under the premise of not affecting the quality of the mold, the durability of the mold can be greatly improved by appropriately widening the gap, and sometimes it can be increased by several times or even dozens of times.

2. Proper selection of die material

Die materials have different strengths, toughness and wear resistance. High-quality materials can be used under certain conditions, which can increase the durability several times. The service life of T10A steel dies is shorter than that of Cr12 and Cr12MoV dies. The average grinding life of G35 titanium carbide cemented carbide as a convex and concave material is 5 to 10 times that of Cr12 steel, while the average grinding life of W-Co tungsten-cobalt carbide as a convex and concave material is 20 to 30 times that of Cr12 steel. Therefore, to improve the durability of the die, good materials must be selected.

3. Reasonable forging and heat treatment of stamping die parts.

The selection of high-quality die materials and the reasonable forging and heat treatment of the same material and materials with different performance requirements are one of the main effective ways to improve the durability of the die. Generally speaking, quenching, if overheating during heating, not only can make the workpiece too brittle, but also easily cause deformation and cracking during cooling, reducing its durability. Therefore, when manufacturing the die, the heat treatment process must be correctly grasped.

4. Reasonably arrange the die production process and ensure the machining accuracy.

The precision of the die has a great influence on the durability of the die. For example, in the blanking die, due to the uneven assembly gap, under the action of shear force, the die is often gnawed, thus affecting the life of the die. At the same time, the poor surface finish of the die can also cause a decrease in the durability of the die. Therefore, when processing, it must be assembled according to the size of the hole spacing, the verticality of the punch and the support surface of the fixed plate should be consistent, and the die spacing should be uniform, and the guide accuracy level of the guide column should be given sufficient attention. The higher the machining and assembly accuracy and the higher the surface roughness level of the working part, the better the durability of the die.

5. Correctly select the press.

In order to improve the durability of the punching die, a punching machine with high precision and high rigidity should be selected, and a punching amount with a punching amount much greater than 30% of the punching pressure should be selected. In general, the use of a servo punch can correspondingly increase the life of the die by dozens of times.

6. Correct use and maintenance of precision die.

In order to increase the life of the stamping die, the operator should use and maintain the stamping die reasonably, and the stamping die should be repaired frequently to avoid the stamping die being pressed.

The above-mentioned content about the life of the stamping die is one of the key points of the development of stamping die technology. It is also one of the key points of the development of stamping die technology to improve the degree of standardization of the die as a whole. In order to prolong the life of the die, various strengthening and superhardening treatments on the surface of the die are also the focus of development. I hope the above can be helpful to readers.

What are the manufacturing materials of stamping molds?

Among the four major processes, stamping is very important. In the stamping process, the quality of the stamping die is a very important process. It often stops production due to the failure of the blanking die, which affects the quality of the blanking parts and the production cycle. In addition to the process of stamping die production, the material is also a very important part, and the stamping die material is the key to prolonging its service life. The following is the editor of Zhejiang Baifudu Electromechanical to introduce some common stamping die manufacturing materials. .

The materials for producing stamping parts include high-speed steel, carbon tool steel, alloy tool steel, cemented carbide, steel-bonded cemented carbide, zinc-based alloy, low melting point alloy, aluminum bronze, polymer materials, etc. At present, many materials are used for stamping dies. for steel.

1. Carbon tool steel

Carbon tool steels such as T8A and T10A are used for stamping dies, which are characterized by good workability and low price; but poor hardenability and red hardness, large heat treatment deformation, and low bearing capacity.

2. Low alloy steel

Low-alloy steel is based on carbon tool steel, adding an appropriate amount of alloying elements. Compared with carbon tool steel, the quenching deformation tendency is small, the hardenability is good, and the wear resistance after quenching is good. The low alloy steel used for stamping parts is CrWMn.9Mn2V. 7CrSiMnMoV (code CH-1). 6CrNiSiMnMoV (code GD), etc.

3. High carbon-high chromium tool steel

Cr12 and Cr12MoV. Cr12Mo1V1 (code D2) is a common high carbon and high chromium tool steel with good hardening properties and minimal heat treatment deformation. They are highly wear-resistant, slightly deformed die steels, second only to high-speed steels in bearing capacity. But the carbide segregation is serious and must be upsetting repeatedly (axial upsetting). Through forging, the non-uniformity of carbides can be reduced and the service performance can be improved.

4. Medium chromium high carbon tool steel.

High-carbon medium-chromium tool steels are mainly Cr4W2MoV, Cr6WV ​​and other Cr5MoV, etc., which have low chromium content, uniform carbide distribution, small heat treatment deformation, good hardenability, and good processing dimensional stability. The results show that the performance is improved compared with the high carbon and high chromium steel with a larger degree of carbide segregation.

5. High-speed steel

Among high-speed steels, it has the highest hardness, wear resistance, high compressive strength and high bearing capacity. W18Cr4V (code 8-4-1), tungsten W6Mo5Cr4V2 (code 6-5-4-2), Japanese trademark SKH51, American brand M2) and 6W6Mo5Cr4V (code 6W6, also known as low carbon M2) for toughness enhancement .

6. Basic steel

Adding a small amount of other elements to the basic composition of high-speed steel and appropriately increasing the carbon content can improve the performance of the steel. Such steels are collectively referred to as base steels. It not only has high wear resistance and hardness, but also has better fatigue strength and toughness than high-speed steel. It is a high toughness cold work die steel with lower material cost than high speed steel. The basic steels commonly used in stamping dies are 6Cr4W3Mo2VNb (code 65Nb), 7Cr7Mo2V2Si (code LD), 5Cr4Mo3SiMnVal (code 012Al), etc.

7. Carbide and steel bonded cemented carbide.

Carbonization has higher hardness and wear resistance, but poor bending strength and toughness. Tungsten-cobalt alloys are used as cemented carbides for molds. For molds with low impact and high wear resistance, cemented carbide with low cobalt content can be selected. For impact dies, carbides with high cobalt content can be used.

Steel-bonded cemented carbide is sintered by powder metallurgy with a small amount of alloying element powder (such as chromium, molybdenum, tungsten, vanadium, etc.) as the binder and titanium carbide or tungsten carbide as the hard phase. Steel-bonded cemented carbide is based on steel, which overcomes the disadvantages of poor toughness and difficult processing of cemented carbide, and can be cut, welded, forged and heat treated. Steel-bonded cemented carbides contain more carbides. The hardness and wear resistance of steel-bonded cemented carbide after quenching are poor, but the hardness is high, up to 68-73HRC.

The above is the content related to stamping die manufacturing materials. The manufacturing cost of stamping dies is high, and the general die cost accounts for 1/4-1/5 of the total cost of stamping parts. The cost of a trimming is more than 70% of the original mold cost, or the mold life is close. If the mold repair process is too complicated, the mold repair cost is too high, and the difficulty is high, the maintenance cycle will be too long, which will seriously affect the normal production of stamping parts. Hope the above content can be helpful to readers.

Are the process steps of spur gear processing troublesome?

First, the general steps of gear processing

1. Forging base blank

In order to obtain a reliable and stable use effect of the spur gear, the blank of the spur gear needs to be produced during the processing, and the quality of the blank will affect the later use effect, so this is a very critical step.

2. Turning operations

After the normal operating system is performed based on the spur gear blank, the turning operation can be performed. This is also a very important point. If the spur gear processing can be performed normally, the turning operator can ensure the accuracy of the spur gear. Because we need to use the lathe for analysis and processing, the accuracy will continue to improve.

3. Finish the grinding process

After the spur gear turning process is completed, it needs to be forged and ground. This method of operation is to ensure the quality of the products used for the spur gears, because the forged spur gears can show good load-carrying capacity and have good hardness, so they will be safer and more reliable to use.

4. Rolling and shaping

Ordinary gear hobbing machines and gear shaping machines are still widely used in the gear processing equipment. Although the adjustment and maintenance are convenient, the production efficiency is low. If a large production capacity is achieved, multiple machines are required to produce at the same time. With the development of coating technology, the re-coating of hob and plunger after sharpening is very convenient, and the service life of the coated tool can be significantly improved, generally by more than 90%, which effectively reduces the number of tool changes. And sharpening time, the benefit is significant.

5. Shaving

Radial shaving technology is widely used in mass gear production due to its advantages of high efficiency, easy realization of modified tooth shape and tooth direction.

6. Heat treatment

Gears require carburizing and quenching to ensure their good mechanical properties. Stable and reliable heat treatment equipment is essential for products that are no longer subjected to grinding after heat treatment.

7. Grinding

It is mainly to finish the heat-treated gear inner hole, end face, shaft outer diameter and other parts to improve dimensional accuracy and reduce shape and position tolerance. Gear machining adopts pitch circle clamp to locate and clamp, which can effectively ensure the machining accuracy of tooth and installation reference, and obtain satisfactory product quality.

8. Dressing

Check and clean the teeth for bumps and burrs before assembling the gears to eliminate the abnormal noise caused by them after assembly. This is done by listening to the sound of a single pair of meshes or by observing the mesh deviation on a comprehensive checker. The housing parts in the produced transmission include clutch housing, transmission housing and differential housing. Clutch housing and transmission housing are load-bearing parts, which are generally made of die-casting aluminum alloy by die-casting with special molds. The shape is irregular and complex. Bearing hole and locating pin hole → cleaning → leak test detection.

Spur gear processing is a detailed work process that cannot be ignored. This is very important and should be taken seriously.

How to control the deformation of precision gear stamping

1. The main factors affecting the heat treatment deformation of gears

1. The influence of material metallurgical factors on gear deformation: the higher the hardenability of steel, the greater the deformation. When the center hardness is greater than 40HRC, the amount of deformation increases significantly. Deformation is more stable, provided by steel mills, deformation is low, stable, steel. When the content of a/n is controlled between 1 and 2.5, the hardenability zone can be reduced and the amount of deformation can be reduced.

2. The effect of preliminary heat treatment on gear deformation: the normalizing hardness is too high, and a large amount of sorbite will increase the deformation of the inner hole, so the forgings should be treated with temperature-controlled normalizing or isothermal annealing.

3. Influence of carburizing process on deformation: uniformity of temperature. The uniformity of the carbon layer and the uniform temperature of the cooling system medium will affect the analysis of the deformation of the gear structure. At the same time, the carburizing temperature is required to be higher and higher, the thicker the carburized layer, the lower the oil temperature, and the larger the gear deformation.

4. Influence of quenching on deformation: Quenching and cooling behavior is an important factor affecting the deformation of gears, and the deformation of hot oil quenching is smaller than that of cold oil quenching. The cooling ability of the oil is also key to deformation. The mixing mode and strength are affected by deformation, quenching pressure quenching plate gears, according to the deformation of various gears. By adjusting the parameters of the punching machine, reducing the deformation, adjusting the pressure of the inner and outer die and the expansion pellet, adjusting the size of the oil injection of each section and the size of the top table, the deformation is controlled.

5. Clamping method and fixture: The purpose is to make the workpiece heat and cool evenly, and the carburized layer of each part of the workpiece is uniform to reduce uneven thermal stress and structural stress, thereby reducing deformation. The clamping mode can be changed. The disc part is perpendicular to the oil surface, and the shaft part is installed vertically, using compensation washers, support washers and superimposed washers. The splined hole parts can be carburized mandrels.

There are many factors that affect the deformation of carburizing heat treatment, which may be the result of the comprehensive influence of various reasons. Only by controlling various factors, the deformation can be controlled to a lesser extent. Controlling gear deformation is also an important problem to be solved in the whole process of gear manufacturing.

2. Specific control measures for gear heat treatment deformation

Through the above analysis, it is known that there are many factors that affect the deformation of gears during heat treatment, and they exist in each link. In order to control the deformation of gears during heat treatment, relevant technical personnel can refer to specific control measures to improve the quality of gears.

1. Scientific selection of gear material

The hardenability of gear raw materials directly affects the heat treatment deformation of gears. It is necessary to scientifically select the raw materials for making gears. Different materials have different hardenability. , Compared with other materials, the hardenability of steel is better. At the same time, the precision of the gear will also affect the hardenability of the raw material. For example, the raw material of the gear in my country is mainly 20Cr Mn Ti steel. This kind of steel has uneven crystals and is prone to heat treatment deformation. In addition, considering the overall cost, it is necessary to choose suitable machining equipment.

2. Reasonable gear design

Relevant designers should fully consider the various reasons that cause the deformation of the gear heat treatment process, and design the gear shape scientifically and rationally without changing the original performance. Simple and direct is the best, so as to reduce the deformation problem caused by uneven force.

3. Select the appropriate heat treatment process

In the process of heat treatment of gears, quenching oil should be selected as the quenching medium. Hot oil quenching has smaller deformation than cold oil quenching. The cooling capacity and stirring method of the oil are also important factors affecting the deformation. At the same time, additives should be properly applied to improve the hardness of gear parts. , to ensure the quality of the gear.

4. Optimize the charging method

In order to make the gear parts heat evenly during the heating process, the charging method can be optimized. The disc parts are placed vertically with the oil surface, and the shaft parts are installed vertically. At the same time, compensation washers can be used to reduce gears caused by uneven heat. Deformation occurs.

5. Preheating

After the gear is forged, there will also be uneven heating in the heat treatment process due to uncontrollable stress. Preheating can effectively prevent this from happening. Preheating after forging can improve the quality of gear raw materials. The organizational structure can effectively prevent the problem of deformation due to stress redistribution.

6. Improve the quality of machining

In the selection of mechanical equipment, it is necessary to choose high-quality mechanical equipment. Considering a series of factors that affect the deformation of the gear heat treatment, the technicians can summarize the reasons for the deformation of the gear, and prepare a preventive plan in advance in the subsequent heat treatment process of the gear, which can effectively prevent the occurrence of deformation. In addition, for gears with special materials and strange shapes, secondary heat treatment is required to be safe.

From the above analysis, it is known that there are many factors that affect the deformation of gear heat treatment. In order to

It can effectively prevent the occurrence of gear heat treatment deformation, not only to scientifically select the material of cast gears and reasonable gear design, but also to make full use of thermal processing technology to comprehensively improve the quality of machining, thereby effectively reducing the probability of gear heat treatment deformation. , to ensure the service life of the gear.