What are the processes required for the deformation of stainless steel tensile parts?

1. Optimize the flange diameter, reduce the maximum tensile stress and reduce the deformation resistance. The lateral dimension of the die for the first deep drawing is increased, and the fillet of the die for the first deep drawing is enlarged. After the pre-drawing process is completed, the trimming process is added to remove excess material as much as possible, reduce the forming resistance of the stainless steel drawing material, and effectively prevent the material from cracking when it is further deformed.

2. Coat the surface of the mold with dry film lubricant (the main components are: nitrocellulose, oily alkyd resin, plasticizer, extreme pressure agent and other additives) to reduce the frictional resistance between the material and the mold surface during deformation. It makes it easier for the material to move from the deformation zone to the force transfer zone.

3. Combine the last two processes in the original process (i.e. forming, deep drawing, and flanging) into one (forming and flanging), so as not to increase the processing steps of the parts, so it can effectively control the processing cost. Reasonable preventive measures such as reasonable convex and concave die fillets, adding appropriate heat treatment procedures, and applying lubricant on the surface of the concave die can improve the success rate of stainless steel drawing parts.

How to choose the processing materials of automobile stamping parts reasonably?

We found that the value of the residual material left in the processing of metal stamping parts is also great!

1. The residual material produced by shearing or stamping can be used to produce small parts, reducing the use of ordinary plates and improving material utilization.

2. Large-size flat products are sorted and sold. For valuable large sheets, if they cannot be used by themselves, they can be classified and sold by variety, increasing the sales value of waste products and increasing income.

3. The remaining materials are provided to supporting manufacturers for processing. For enterprises with supporting manufacturers, they can also provide available plates to supporting manufacturers, and adopt the method of processing with supplied materials to reduce purchase costs and increase income.

Saving has always been a traditional virtue of our Chinese nation. Personal savings should also rise to business savings. Effective use of production and processing surplus materials to create greater benefits for the enterprise!

How to solve the problem of warping of stainless steel tensile parts?

2. How to solve the problem of warping of stainless steel tensile parts?

For stainless steel tensile parts, if there is a problem of warping, the solution is to anneal. If not, then use the right material. In order to prevent the sticking phenomenon, the brightness of the mold should be improved, and the above purpose can be achieved by using the appropriate stretching oil and the correct stretching coefficient.

3. Are the materials used in the tensile parts different and whether the elongation is different?

Tensile parts, when using materials, if the materials are different, the elongation will be different. Moreover, after stretching, the force on the material will also change, which is affected.

4. Can sandblasting be used to eliminate the internal stress of tensile parts?

Sandblasting for surface preparation cannot be used to relieve internal stresses in tensioned parts. From another point of view, in the sandblasting process, there will be some effects. Then, over time, it may reduce the internal stress of the tension member, so this is not correct.

Well, the above is the relevant content about “how to solve the problem of warping of stainless steel tensile parts?”, I hope the above content can help readers!

How to improve the processing deformation of hardware accessories?

1. What are the main points of hardware accessories processing?

1. The machining accuracy of the parts changes due to internal force. Skilled workers know that during machining, the part is clamped by the three jaws of the lathe to ensure that the forces the part is subjected to during machining are stable over time. It will loosen the lathe chuck, reduce the force on the part and cause deformation.

2. Deformation easily occurs during heat treatment. When machining some thin and small parts, it is usually necessary to heat treat them first. At this time, if the professional knowledge of the technicians is not solid and the structural performance of these parts is not well understood, it is easy to cause the parts to bend.

3. The parts are elastically deformed under the action of external force. When machining parts, lathes and fixtures are often used. When the two are not uniform, the uneven force on the fixed parts will occur, and the deformation will occur when the force is small.

Second, the improvement measures of hardware accessories processing

1. After the parts are heat treated and deformed naturally, they are trimmed with professional cutting tools to ensure the perfection of the parts.

2. Carry out technical transformation to improve the rigidity of components.

Technicians need to improve the process, increase innovation, select the appropriate heat treatment method, change the stiffness of the parts, so that the parts are not easily deformed.

What are the common processing methods for CNC sheet metal processing stainless steel materials?

1. Heat treatment degradation

Heat stainless steel to a minimum of 1900°F, then quench or rapidly cool the water by other means.

2. Hardening

Stainless steel cannot be hardened by heat treatment, but PRODEC316/316L can be hardened by cold work.

3. Corrosion resistance

Comparing 316L (2.7Mo) type stainless steel with other stainless steels in various common corrosive environments, the corrosion rate exceeds the lowest temperature at 5mpy. All tests were performed in accordance with the requirements of the Materials Technology Institute (MTI) for the sheet metal working industry.

4. Processability

Sheet metal processing is an easy production process using a full range of cold stamping operations, while also increasing the strength and hardness of the material.

5. Hot work

Stainless steel can be forged from 1700 to 2200°F. For maximum corrosion resistance, forgings should degrade at a minimum rate of 1900°F, otherwise they should be quenched or rapidly water cooled after hot working operations.

6. Welding

Stainless steels (except oxyethane) using various conventional welding processes and other low carbon filler metals with higher aluminium content than the base metal should be used with steel.

Comparison of traditional punching method processing and laser cutting of hardware

Whether it is from the quality, packaging and supply of stainless steel hardware products, or the research and development and extension of stainless steel hardware tool products, it is unanimously praised and praised. The development advantages of domestic stainless steel hardware tools, the production centers of multinational stainless steel hardware companies have been transferred to China, allowing domestic stainless steel hardware tools to provide a basis for the market.

It is often used in modern hardware processing and manufacturing. In the traditional processing industry in the past, the processing method of die punch was mainly used to process the hardware. According to the shape required by the customer, the mold is opened, all the molds are evenly installed on the punching machine, and the workpiece is formed at one time by the large punching force. This method is suitable for large-scale hardware production, and the speed is very fast, and it only needs to be stamped once to form. However, this method of processing also has disadvantages. For example, there are a lot of burrs in the stamped workpiece. For example, mold making and mold maintenance cost a certain amount of cost and development cycle.

With the continuous development of current laser technology, hardware has gradually begun to be widely used in laser cutting for processing. The use of laser cutting machine to process hardware avoids the cost of molds and effectively improves the quality of cutting. The shape and size of the workpiece to be cut can be drawn with CAD drawings, and then written into the equipment program, and the shape required by the workpiece can be quickly cut.

Compared with laser cutting, stamping also has advantages and disadvantages. The advantage is that the punch is not limited by the mold, one punch can be equipped with multiple sets of molds, and the speed of one punch is also very fast. The disadvantage is that the punch is very limited by shape, format, material and thickness. Therefore, the use of punching machines to process workpieces and sheet metal with simple shapes has great advantages.

Because the laser cutting machine has fast cutting speed, large production volume, short production cycle, good cutting quality, no deformation during processing, no mold opening, no wear, labor cost saving, no shape restriction, high degree of automation, suitable for all metal materials The laser cutting method is called a technological revolution in sheet metal processing in the industry, and it is also widely recognized by the sheet metal processing industry. At present, the metal sheet is as thin as 1mm and as thick as more than 50mm, and the metal laser cutting method is widely used. At the same time, metal laser cutting machines are also developing in the direction of high power, which means that the future metal laser cutting field will be more suitable for thick metal processing and higher-speed metal laser processing.

In the context of Made in China 2025, the sheet metal processing industry is also transforming and developing in the direction of high efficiency and high quality. Metal laser cutting technology is in line with this characteristic, so its wide application in the sheet metal processing industry has promoted the rapid development in the past five years. High-precision, high-speed, laser cutting technology makes sheet metal processing products higher in quality and efficiency!

What are the practical mold processing methods and skills?

1. Information about the waste situation

The nature of the waste is the inverse image of the forming hole, that is, the same part is in the opposite position. By checking the scrap, it can be judged whether the upper and lower die gaps are correct. If the gap is too large, the scrap will exhibit rough, undulating fracture surfaces and a narrow bright band. The larger the gap, the larger the angle between the fracture surface and the bright band area. If the gap is too small, the scrap will exhibit small angled fracture surfaces and wide bright band areas.

Excessive clearance creates holes with large curls and edge tears, leaving the profile slightly protruding and the edges thinner. A gap that is too small will result in slight hemming of the tape and large angular tears, resulting in a cross-section that is more or less perpendicular to the surface of the material.

The ideal scrap should have a reasonable collapse angle and a uniform bright band. This keeps the punching force low and creates a neat round hole without burrs. From this perspective, increasing die life by increasing clearance comes at the expense of finished hole quality.

Second, the choice of mold clearance

The gap of the die is related to the type and thickness of the material being stamped. Unreasonable clearance can cause the following problems:

1. The gap is too large, the burr of the stamping workpiece is relatively large, and the stamping quality is poor. If the gap is too small, although the punching quality is good, the die wear is serious, which greatly reduces the service life of the die and easily causes the punch to break.

2. If the gap is too large or too small, it is easy to cause adhesion on the punch material, which will cause the material to taper during punching. If the gap is too small, it is easy to form a vacuum between the bottom surface of the punch and the plate, causing the waste to bounce back.

3. Reasonable clearance can prolong the life of the mold, the discharge effect is good, the burrs and flanging are reduced, the plate is kept clean, the hole diameter is consistent and the plate surface will not be scratched, the number of sharpening is reduced, the plate is kept straight, and the punching positioning is accurate. .

3. How to improve the service life of the mold

For users, increasing the service life of the mold can greatly reduce the stamping cost. The factors that affect the service life of the mold are as follows:

1. The type and thickness of the material.

2. Whether to choose a reasonable lower die gap.

3. The structure of the mold.

4. Whether the material is well lubricated during stamping.

5. Whether the mold has undergone special surface treatment.

6, such as titanium plating, titanium carbonitride.

7. The neutrality of the upper and lower turrets.

8. Adjust the rational use of gaskets.

9. Is it appropriate to use the beveled mold?

10. Whether the die base of the machine tool is worn.

Fourth, the problems that should be paid attention to when punching special size holes

1. Special punch for punching holes with small aperture in the range of φ0.8-φ1.6.

2. When punching thick plates, use a die one size larger than the hole diameter. NOTE: At this time, if a normal size die is used, the punch threads will be damaged.

3. The ratio of the small width to the length of the punch edge part should generally not be less than 1:10.

Example 3: For a rectangular punch, when the length of the cutting edge is 80mm, the width of the cutting edge should be ≥8mm.

5. Sharpening of the mold

1. The importance of mold sharpening

Regular sharpening of the die is key to ensuring consistent punch quality. Regular sharpening of the mold can not only improve the service life of the mold, but also improve the service life of the machine. But you must master the right sharpening timing.

2. The specific characteristics of the mold that needs to be sharpened

For die sharpening, there is no strict number of blows to determine if sharpening is required. It mainly depends on the sharpness of the cutting edge. It is mainly determined by the following three factors:

1. Check the fillet of the cutting edge. If the fillet radius reaches R0.1mm (the maximum R value should not exceed 0.25mm), it needs to be sharpened.

2. Check the punching quality, is there a large burr?

3. Determine whether sharpening is required according to the noise of machine stamping. If there is abnormal noise when punching the same pair of molds, it means that the punch is dull and needs to be sharpened.

Note: If the edge of the cutting edge is rounded or the rear of the cutting edge is rough, sharpening should also be considered.

3. The method of sharpening

There are many ways to sharpen the mold, which can be realized by a special sharpening machine or a surface grinder. The punch and die grinding frequency is generally 4:1. Please adjust the mold height after sharpening.

1. Harm of incorrect sharpening method: Incorrect sharpening will aggravate the rapid destruction of the cutting edge, resulting in a greatly reduced number of blows per sharpening.

2. The benefits of the correct sharpening method: Regular sharpening of the mold can keep the quality and precision of the stamping stable. The die edge is damaged more slowly and has a longer life.

4. Sharpening rules

The following factors should be considered when sharpening:

(1) The fillet of the cutting edge depends on the sharpness of the cutting edge when the size is R0.1-0.25mm.

(2) The surface of the grinding wheel should be clean.

(3) It is recommended to use loose, coarse-grained and soft grinding wheels. Such as WA46KV

(4) The amount of grinding each time (the amount of knife cutting) shall not exceed 0.013mm. Excessive grinding will lead to overheating of the surface of the mold, which is equivalent to annealing treatment, and the mold will become soft, which greatly reduces the service life of the mold.

(5) Sufficient coolant must be added when sharpening.

(6) When grinding, the punch and the lower die should be fixed and stable, and a special fixture should be used.

(7) The amount of sharpening of the mold is certain. If this value is reached, the punch will be scrapped. If you continue to use it, it is easy to cause damage to the mold and the machine, which is not worth the loss.

(8) After sharpening, the edges should be treated with whetstone to remove excessively sharp ridges.

(9) After sharpening, it should be cleaned, demagnetized and oiled.

Note: The amount of die sharpening mainly depends on the thickness of the stamped sheet.

Six, the punch should pay attention before using

1. Storage

(1) Wipe the inside and outside of the upper die sleeve with a clean rag.

(2) Be careful not to scratch or dent when storing.

(3), apply oil to prevent rust.

2. Preparation before use

(1) Thoroughly clean the upper mold sleeve before use.

(2) Check the surface for scratches and dents. If there is, remove it with a whetstone.

(3) Apply oil inside and outside.

3. Matters needing attention when installing the punch on the upper die sleeve

(1) Clean the punch and oil its shank.

(2) About the large-station mold

Have you all understood the above practical mold processing skills? For more information, please follow our website.

How to reduce the damage probability of stamping parts?

3. The sliding hinge shall not use aluminum alloy material, but stainless steel material.   

4. When installing hardware with fastening screws, a metal lining plate must be built in, and the thickness of the lining plate should be at least twice the distance between the fastener teeth. Plastic profiles or non-metallic linings must not be fastened.

5. After the hardware accessories are installed, the door and window locks, handles, etc. should be assembled after the window and door sash is in the frame. The position is accurate and the switch is flexible.   

6. After installation of metal stamping parts, attention should be paid to maintenance to prevent rust and corrosion. In daily use, it should be gently closed and opened to prevent hard closing and hard opening, causing damage. No noise, now there are nylon wheels, it not only pushes and pulls without noise, but also is smoother, lighter, and has no shorter service life than the above pulleys, in order to make the (door) windows operate normally and smoothly, it is necessary to choose high-quality pulleys for the (door) windows.

The above methods can effectively reduce the damage probability of stamping parts and improve the utilization rate. I hope the above content will be helpful to you!  

What is the difference between metal stamping blanking and punching?

Blanking can also be directly understood as re-cutting on small or medium-sized metal sheets cut from large pieces.

Most metal stamping formulas often punch the project before doing other things. After the blanking is completed, the processing manufacturer will perform other metal stamping stages, such as extrusion and bending.

Effective blanking can further improve our production capacity and efficiency. For example, when there are large quantities of orders, the blanking method is not only simple and convenient in the production process, but also the materials produced are of relatively high quality and high precision.

It is true that common problems such as uneven edges, burrs, etc. still occur during the day-to-day manufacturing process, but there are solutions for such situations as well, such as thermal deburring, manual deburring and/or vibration methods to remove .

For professional metal stamping processing plants, this is not a major problem. Baifudu Electromechanical Metal Stamping Processing Factory has a variety of processing technologies to support the production and processing of precision parts of various diameters and materials. The materials include copper, iron , stainless steel, aluminum, etc., can process 0.01 × 0.01 round, square, special-shaped and complex three-dimensional surfaces.

How to ensure the dimensional accuracy of medical device stamping parts?

1. How to ensure the dimensional accuracy of stamping parts of medical devices

1. Regularly check the stamping and tightening of the workbench, whether the electrical facilities are running and whether the operator refuels regularly to ensure the normal operation of the equipment.

2. The way the technicians install and debug the molds is reasonable. Before mass production, 5 pieces of inspections are carried out to fully ensure the normal use of the molds.

3. During the production process of stamping parts, the quality inspection staff will conduct regular process inspections for each process, and register the size data in time to prevent deformities in large-scale production.

4. After the mass production is completed, after packaging, the quality inspection staff will conduct a mass production sampling inspection on the finished product and record the size data.

Another point is that some companies usually do not pay attention to these key points about quality, but PAXD will regularly conduct quality training for operators to enhance their professional knowledge and enhance their awareness of literacy! Choose Zhejiang Baifudu Electromechanical Co., Ltd., worthy of your trust!

The Importance of Stamping Parts for Automotive Pipe Supports

There are many kinds of automobile pipeline stamping parts, which are generally used in the transmission system and steering system of automobiles. Its advantages lie in the specification of materials, high precision and relatively low cost.

The cold stamping process technology is widely used in the production of stamping parts for automobile pipeline brackets, which is suitable for many types of stamping parts in the automobile industry and requires large-scale production. In medium and heavy-duty vehicles, most of the supporting parts, such as the frame and carriage of large vehicles, are automotive stamping parts.

The steel mainly used for cold stamping is steel plate and steel strip, which accounts for 80% of the steel consumption of the whole vehicle. The production of cold stamping materials and automobile stamping parts is very close.

Usually a relatively high-strength steel plate is selected. The quality of the selected material not only determines the performance of a good product, but also directly affects the process design of our later automotive stamping process, the service cycle of the mold and the impact of the production process. To the quality, cost, service life and production organization of the product, it is an important and complicated task to reasonably select materials that are conducive to product performance. This material is usually also designed and evaluated in the initial design, taking into account the performance and required characteristics of different types of automotive products to ensure vehicle quality and performance.

How to solve the stamping problem of electric vehicle stamping parts

The die set can be dismantled in time to check the abnormal cause of imprinting. It is verified from the consistency of the lower plane of the ejector pin and the die, and the rigidity of the lower backing plate and the lower bottom plate. It is found that the cause of the imprinting on the surface of the part is the concave The height of the mold and the push block is inconsistent. The source is that the backing plate has no hardness, and it sags after mass production, resulting in imprinting problems.

The imprint on the stamping part is caused by the protruding part of the part of the stamping die that should not be raised, and the raised part should be ground or replaced.

First of all, find the cause and location of the imprinting, and then blow the iron filings away with the blowing nozzle in the place where iron filings are likely to be generated, and check whether the mold blade is unhappy and causes too much iron filings. In addition, check it frequently during operation. , to see if there is an embossing.

The main reason for this anomaly is that the die set did not heat the die pad, and it was handed over to the responsible department for rectification. After rectification, the bottom-cutting problem solved the root cause of the imprinting problem.

How to solve the problem of unqualified stamping size of electric vehicle stamping parts

1. In the production process of electric vehicle stamping parts, due to the burrs of the stamping parts during blanking, it is necessary to study the cutting edge, and it is also necessary to pay attention to whether the blanking gap is reasonable. During bending, the instability of stamping parts is caused, mainly for U-shaped and V-shaped bending, for the guide position before bending, the guide position during the bending process, and the pressure during the bending process. Holding the material to prevent the stamping from slipping during bending is the key to solving the problem.

2. During production, the stress on the material increases, and the stamping parts tend to turn over and twist. When the material is turned over, the size of the punching hole will become smaller, and the strong pressure on the material will cause plastic deformation of the material, so the size of the punching hole will be larger. Thereby reducing the strong pressure, the punching size will be smaller.

3. In the production process of electric vehicle stamping parts, if the end is repaired with a slope or arc, due to the relief of the punching force, the stamping parts are easy to turn over and slander, so the stamping size will be larger. The convex end is flat, and the size of the punching hole is relatively small.  

What are the characteristics, design and material advantages of stamping parts?

When designing metal stamping parts, not only should the structure meet the requirements of use, but also the process requirements of the metal stamping part structure should be considered, that is, the metal stamping part structure should be adapted to the stamping process. Metal stamping parts with good structural technology can reduce or avoid stamping defects, easily ensure the quality of stamping parts, simplify the stamping process, improve productivity and reduce production costs. The main factors affecting the process performance of metal stamping parts are shape, size, precision and material.

Stamping parts are parts that can be processed by means of stamping, bending, stretching, etc. Metal stamping parts are widely used in various fields of our life, including some electronic devices, auto parts, decorative materials and so on. The structure of metal stamping parts is as follows: 

Stamping parts are mainly made of metal or non-metallic plates under the pressure of a press through a stamping die, which has the following advantages:

1. Stamping parts are stamped and manufactured under the premise of low material consumption. Its parts are lightweight and rigid. After the plastic deformation of the plate, the internal structure of the metal is improved, and the strength of the stamping part is improved.

2. The stamping parts have high dimensional accuracy, uniform size with the die, and good interchangeability. Meets general assembly and use requirements without further machining.

3. The surface quality of stamping parts is good, the appearance is smooth and beautiful, which provides convenient conditions for surface coating, electroplating, phosphating and other surface treatments.  

Large size and dimensional accuracy of automotive stamping parts

1. Large pieces and dimensional accuracy of automotive stamping parts

Automobile stamping parts are divided into many types, and the steel plates used for different types of parts are also different.

For some sealing plates, brackets and the like that do not require very high performance and the shape is not complicated, it is easy to use steel plates with general tensile properties for a long time.

Due to strict appearance requirements, large outer covering parts inevitably use specially required steel plates.

Some shapes are more complex, and some are deep shapes or steel plates with relatively sharp changes that do not require good tensile properties.

The dimensional accuracy of metal stamping parts can be generally divided into two categories: precision grade and ordinary grade. The precision grade is the precision that can be achieved by the stamping process, and the ordinary grade is the precision that can be achieved by economical means. When the machining accuracy of the mold is high, the shape and dimensional accuracy of the metal stamping parts can reach the ITl0 level, and the inner hole size can reach the IT9 level.

The surface quality of metal stamping parts should not be higher than the surface quality of raw materials, otherwise it needs to increase the follow-up processing to achieve, but also increase the cost of production.

The dimensional accuracy of metal stamping parts refers to the difference between the actual size and the basic size of the stamping parts. The smaller the difference, the higher the dimensional accuracy of the metal stamping parts. The main factors that lead to the size error of metal stamping parts are: the manufacturing accuracy of convex and concave molds, the gap between convex and concave molds, the elastic recovery of materials after stamping, inaccurate positioning, and unstable material properties.