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 commonly used steels for metal stamping dies?

2. Japanese plastic mold steel commonly used in the domestic market

G-STAR corrosion-resistant plastic mold steel, the manufacturer’s brand of Japan’s Datong Special Steel Co., Ltd. The steel can be pre-hardened, with a factory hardness of 33-37HRC, and has good corrosion resistance and machinability. It can be combined with S-STAR steel to form a corrosion-resistant plastic mold.

NAK55/NAK80 mirror plastic mold steel, Japan’s Datong Special Steel Co., Ltd.’s manufacturer’s brand. Both steels can be pre-hardened to a hardness of 37-43HRC. NAK55 has good machining performance, and NAK80 has excellent mirror polishing performance, which is used to make high-precision mirror plastic molds.

PXZ pre-hardened plastic mold steel, the manufacturer’s brand of Japan’s Datong Special Steel Co., Ltd. The factory hardness of the steel is 27-34HRC. The steel has good machining performance and welding repair performance, and is used to make large-scale etched molds and plastic molds such as automobile bumpers, instrument panels, and home appliance shells.

PX4/PX5 mirror plastic mold steel, the manufacturer’s brand of Japan Datong Special Steel Co., Ltd. The steel can be pre-hardened to a hardness of 30-33HRC. These two kinds of steel are American P20 modified type, which are used to make large mirror plastic molds and automobile taillights, front baffle molds, cameras, and home appliance shell molds.

S45C/S50C/S55C ordinary plastic mold steel. Japan’s JIS standard steel grades are similar to my country’s high-quality carbon structural steel 45, 50, and 55, which are often used in non-important parts of molds, such as mold bases. Due to the special requirements of mold steel, the production process of this type of steel requires concentrate, refining and vacuum degassing, the carbon content of the steel is narrowed, and the content of sulfur and phosphorus is controlled to a lower level. For example, in YB/T107-1997, carbon The steel grades of plain plastic mold steel are SM45, SM48, SM50, SM53 and SM55, etc., to distinguish them from high-quality carbon structural steel for general purposes.

S-STAR anti-corrosion mirror plastic mold steel, Japan’s Datong Special Steel Co., Ltd.’s manufacturer’s brand. The steel is a martensitic stainless steel with high corrosion resistance, high mirror polishing properties, and small heat treatment deformation. It is used to make corrosion-resistant mirror-surface precision plastic molds.

3. German plastic mold steel commonly used in the domestic market

GS-083, GS-083ESR, GS-083VAR, GS-083H, GS-083M, GS-128H, GS-162, GS-312, GS-316, GS-316ESR, GS-316S, GS-318, GS- 343EFS, GS-343ESR, GS-3615, GS-379, GS-711, GS-738, GS-767, GS-808VAR, GSW-2083, etc.

What are the precautions for metal stamping?

1. What are the preventive measures that should be taken during metal stamping processing?

1. We should regularly check the punch turntable and the die mounting seat of the stamping part to better ensure the coaxial accuracy of the upper and lower turntables.

2. Metal stamping parts need to be strictly inspected before installation and use, and the dirt should be removed. The guide bushes of stamping parts and die casting dies should be carefully checked for good lubrication.

3. In order to ensure the service life of the stretched and compressed parts, the spring of the die should also be replaced regularly to prevent the fatigue damage of the spring from affecting the use of the stretched stamping parts.

4. When installing the mold, the stamping personnel should use soft metal manufacturing tools to prevent the stamping parts from being damaged by impact and extrusion during the installation process.

5. The wear of the convex and concave die edges of the stamping parts should be stopped and polished in time, otherwise the wear degree of the die edge will expand rapidly, the die edge wear will be accelerated, and the stamping quality and die life will be reduced

What are the preventive measures for metal stamping processing above? I hope the above content can help readers!

What should be paid attention to in the processing of stamping parts?

In the whole process of stamping parts processing, we still need to pay attention to all aspects, so as to better understand the overall situation, which will be of great benefit to the future development of the entire manufacturer. What should be paid attention to in the whole process of metal stamping parts? The following Zhejiang Baifudu Electromechanical editor will take you to understand.

On the one hand, when precision stamping parts manufacturers are producing, they must also conduct corresponding inspections on their own products, so as to truly ensure that there is no problem in quality. Only if the stainless steel stamping parts processing plant does the relevant work, the entire production can be guaranteed, and many things will become easier in the future, and the entire production will become easier.
On the other hand, pay attention to the arrangement and management of stamping parts processing. The management and arrangement of the entire production and processing is still very important. If all aspects are really done well and continue to do related things, the situation of the entire manufacturer will continue to improve and improve.

Presumably many people do not know what materials are used to process metal stamping parts, because this kind of stamping parts can only be used in the hardware production industry. As long as you have a certain understanding of the hardware manufacturing industry, you should know that in the hardware processing industry, There are many metal stamping parts that must be used, so there are many stamping parts processing plants, of course, including the existence of stainless steel stamping parts processing plants.

In the current hardware manufacturing industry in my country, there are also some precision stamping parts manufacturers that produce metal stamping parts that meet the needs of hardware production and manufacturing, and these manufacturers are mainly based on some precision stamping parts. These precision stamping parts can greatly improve the product quality and production efficiency of the hardware manufacturing industry during production. Therefore, it also has a great demand in the market. Perhaps, his time and price are the same. There is also a world of difference.

Functions required for motor housing

Precise tolerance, no leakage, compactness, wear resistance, etc. are the functions that the motor housing needs to have, so that it can protect the motor well and prevent various kinds of pollution. Why is it necessary? If some friends are not clear, Kuai and Yiwei’s precision editor should come together to learn more about 1. Precision tolerance

Since the internal components will release a large function, the electric power will be converted into mechanical rotary motion, and the magnetic field will be involved. The output motion and input power should be maintained very accurately, so each position of the component needs to be well positioned. The clearance between rotor, bearing, stator, air gap, winding and commutator shall be as small as possible.

2. Wear resistance

When the motor is working, all the main components that transmit power need to rotate upwards, which forces the relevant supporting parts of the part to contact the inner side of the shell continuously with mechanical power. The contact surface is easy to wear due to long-time operation. However, the surface of aluminum alloy is very smooth and the roughness is very small, which can significantly reduce the conflict between contact surfaces and prolong the working life.

3. Good air tightness

There are two aspects to consider about no leakage. One is about the bubbles inside the motor housing. In this case, it should be a strict standard. Second, the clearance after assembly should be very small, so as not to cause any lubricating oil to flow out of the sealed cylinder block.

4. Compact

The main purpose of using motor is to obtain continuous and stable mechanical movement. In order to ensure the stable operation of the entire motor, the compact housing is not to be missed, and aluminum is the ideal choice for the industry. For mass production of conventional requirements, die casting solutions are cost-effective.

Characteristics Of Stamping Parts

Stamping Parts are mainly formed by stamping and stamping metal or non-metal sheets by means of press pressure. The main features are as follows:

(1) The stamping parts are manufactured by stamping under the premise of low material consumption. The parts are light in weight and good in stiffness, and after the sheet material is plastically deformed, the internal structure of the metal is improved, and the strength of the stamping parts is improved. .

(2) The stamping parts have high dimensional accuracy, uniform size with the same modular parts, and good interchangeability. General assembly and use requirements are met without further machining.

(3) In the stamping process, since the surface of the material is not damaged, it has a good surface quality and a smooth and beautiful appearance, which provides convenient conditions for surface painting, electroplating, phosphating and other surface treatment.

We have a Stamping Bracket, Stamping Mould and other stamping parts available for you. You are welcome to consult and order.

Introduction to multiple drawing

As we all know, when drawing, stamping and drawing products sometimes need to go through multiple drawing processes. Of course, it is better to stretch them once as much as possible. . These tensile forming processes can be divided into several types: tensile processing,’re tensile processing, thinning tensile processing, reverse tensile processing. Please refer to the introduction of these multi-drawing processes by stamping and drawing manufacturers below. 1. Tightening treatment: use the plate pressing device and the punching force of the punch to pull some or all of the flat materials into the cavity of the female die, so that it can form a bottomed container. The side wall of the container is parallel to the stretching direction, which is a simple stretching process. Some need to be expanded to form.

2. Redrawing: that is, for products that cannot be finished by deep drawing, semi-formed products after deep drawing need to be stretched again to increase the depth of the formed container.
3. Reverse stretching process: reverse stretching the parts stretched in the previous process, the inner side of the workpiece becomes the outer side, and the outer diameter decreases.
4. Thinning and stretching process: extrude the formed container into the cavity of the die slightly smaller than the outer diameter of the container with a punch, so that the outer diameter of the container with a bottom becomes smaller and the wall thickness becomes thinner, eliminating the deviation of the wall thickness, and making the surface of the container smooth
   
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Solenoid valve enclosure Terminology

Solenoid valve enclosure Valve body Main part of the valve with all ports and main seats. Core tube Stainless steel tube, closed at one end of the core tube, installed to improve the magnetic flux of the solenoid coil upon energisation. Solenoid Assembly of the electro-magnet, non comprising moveable parts. Solenoid ...

What is the relationship between the cracking of stainless steel tensile parts?

The radius of the punch fillet is too small and too sharp, which is prone to cracks. Therefore, the method of repairing the mold is to increase the fillet as much as possible and polish it if the product specifications allow, and be careful not to be too sharp. The use of special drawing oil can also play a good anti-crack effect, but it should be noted that the lubricant is only suitable for the working surface of the die, and the lubricant should not be in contact with the punch, because the punch and the blank surface will produce good cracks. friction, preventing the material from sliding, cracking and thinning.

Stainless heat-resistant steel and austenitic stainless steel are more common, and these two materials are used as examples. The specific reasons are as follows:

Austenitic stainless steel: Austenitic stainless steel produces delayed cracks due to its own structure. Austenitic stainless steel has a large degree of work hardening. After stretching, in addition to the residual internal stress caused by cold working, the austenitic structure is There is also some martensitic transformation in the mouth, so the mouth of the mouth should be prevented from cracking. In order to eliminate residual stress and eliminate martensite structure and make it undergo phase transformation at high temperature, taking 304 as an example, the annealing temperature of austenitic stainless steel is 1010~1050℃. The mouth of the extension is annealed, and the faster one is high-frequency annealing.

For cylindrical drawn parts, when the diameter is greater than or equal to 0.8 and the diameter is greater than or equal to 300, annealing treatment is required. Of course, if cracks occur when the aspect ratio is less than 0.8, annealing should be arranged immediately.

Ferritic stainless steel: no phase change occurs after stretching. The main reason for product cracking is residual stress, which can ensure safety. From experience, for cylindrical drawn parts, when the diameter is greater than or equal to 0.8 , when the diameter is greater than or equal to 300, annealing treatment is required. If the height-diameter ratio is less than 0.8, cracks will appear, and annealing should be arranged immediately.

The above content is related to what is related to stainless steel cracking, and what problems will occur in the production process. In fact, many experienced workers can prevent it in advance. Only by reading and analyzing more can a lot of waste can be avoided. I hope the above content is correct. Readers help.

What are the factors that affect the galvanizing of metal stampings?

1. The surface of metal stamping parts is not thoroughly cleaned, and a curing film is formed on the surface of stamping parts, which affects the normal deposition of electro-galvanizing.

2. Stamping parts have high carbon content. High carbon steel and cast iron will reduce the hydrogen evolution potential, accelerate the hydrogen evolution on the surface of the workpiece, and reduce the electroplating efficiency.

3. The stamping parts are bundled too tightly, and part of the surface is not plated in place during the galvanizing process.

4. The content of additives in the galvanizing bath is low. Low additive content will affect the dispersibility of zinc, and the coating will appear too thin in some parts.

5. Surface corrosion will also reduce the hydrogen evolution potential, accelerate the surface hydrogen evolution of stamping parts, reduce the current efficiency, and affect the deposition rate of zinc.

6. Low sodium hydroxide content. Low sodium hydroxide content reduces current density and anode passivation.

7. Anode passivation will reduce the effective area, thereby affecting the normal distribution of current.

Well, the above is the relevant content about “What are the factors that affect the galvanizing of metal stamping parts?” I hope the above content can help you.

Precision Stamping

Over 20000+ sets of precision stamping parts production experience, stamping accuracy up to ± 0.01mm.
To achieve a high-quality international level, ISO 9001, ISO 14001, and IATF 16949 certifications promise high-quality precision stamping parts.
Supporting you through all processes of your project, working with you to develop the ideal, competitive stamping solution. From our engineering services to tool manufacturing and parts production.

What are the common problems in sheet metal stamping processing?

Sheet metal processing parts have the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, and good mass production performance. Widely used in electronic appliances, communications, automotive industry, medical equipment and other fields. With the increasing application of sheet metal parts, the design of sheet metal parts has become a very important part of the product development process. Mechanical engineers need to understand the design skills of sheet metal parts, so that the designed sheet metal parts can not only meet the requirements of product function and appearance, but also make the manufacture of stamping dies simple and low cost.

1. Common problems of stamping parts processing in sheet metal processing

1. Burrs: In the process of stamping or chamfering, the excess material is not completely left, and burrs appear under the section of the steel plate. According to the interface, when the burr height is greater than 0.2mm, the iron powder will damage the mold, causing convex and concave.

2. Unevenness: The surface of the material is abnormally convex and concave, which is caused by the uncoiled line. This is due to foreign objects (iron filings and dust) in 3.

3, caused by mixing. Roll marks: Caused by foreign matter adhering to the cleaning roller or feed roller (fixed spacing). Generally speaking, foreign objects printed on paper can be cleaned.

4. Scratches: Due to the rollers. Scratches may appear when the roller suddenly stops or accelerates.

5. Rolling may cause wrinkling at the edges: the guide rollers on the uncoiler line may cause wrinkling due to the small gap between the guide rollers on the die, which is caused by the unbalanced feeding of the rollers.

6. Scratches: The main reason for parts being scratched is that there are sharp scars on the mold or metal dust falls into the mold. Precautions are sanding mold marks and cleaning metal dust.

7. Bottom crack: The main reason for the bottom crack of the part is the poor plasticity of the material or the pressure of the die blank holder is too tight. The preventive measure is to replace the plastic material or loosen the edge holder.

8. Wrinkling of the side wall: The main reason for the wrinkling of the side wall of the part is that the material thickness is not enough when the upper and lower molds are installed (if it is relatively small, the thickness is allowed to be thinner) or deviation. This results in a larger gap on one side and a smaller gap on the other. The caveat is to immediately replace the material and readjust the mold.

What is the function of multiple stretching in the processing of automobile drawing parts?

1. The key to determining the technical performance of automotive tensile parts

1. Punching direction to determine the punching direction of the part is to determine the stretching process, the first problem encountered. It not only determines whether a satisfactory stretch can be drawn, but also affects the number of process compensation parts and the shape of the binder surface. The correct judgment of the stamping direction should meet the following three requirements.

(1) Make sure that the punch can enter the die. The shape of the lower right corner of the die protrudes outward, and the convex point exceeds the size of the die, so that the punch cannot enter the die, and the stretching direction cannot be stretched. Therefore, it is necessary to change the drawing direction in order to enter the die.

(2) Make the contact area between the punch and the blank large. The larger the contact surface, the smaller the angle of the contact surface to the horizontal. The blank is less prone to some stress overload that can cause the part to break. When tightening, improve the function of mold attaching, and easily achieve a good shape of the punch, which is beneficial to improve the degree of deformation of the part.

(3) Part of the feeding resistance on the pressing surface should be uniform. Uniform deep drawing is a condition to ensure uniform feeding resistance of each part of the pressing surface. The feeding resistance of each part of the pressing material surface is uniform, which is an important guarantee to ensure that the stretched part does not wrinkle or crack.

2. In order to complete the drawing, reasonably increase the feeding process, and often add process supplements on the basis of the workpiece, so as to achieve a satisfactory stretching effect.

The advantages and disadvantages of technical supplements are important signs of the drawing level of the tensile parts. Reasonable addition of technical supplements should meet the following three requirements:

(1), process drawing requirements.

(2) Requirements for pressing material.

(3) Trimming and flanging are required after stretching.

2. What is the effect of multiple stretching on the stretched parts?

1. Multi-stretching greatly improves the qualification rate in the production process of the product, and it is not easy to produce waste products, because the stress is relieved in the middle after multiple stretching, and the annealing softens.

2. Repeated stretching ensures the precision of the product and greatly improves the elongation coefficient and production efficiency.

3. Due to the high technical content of one-time forming, multiple stretching can increase the uniformity and reduce the product scrap rate.

Third, pay attention to the selection of automotive tensile parts

(1) The standard mold base should be selected as much as possible for the production of drawing parts. The type and specification of the standard mold base determine the type and specification of the upper and lower mold bases.

(2) The selected or planned mold base must be adapted to the relevant dimensions of the selected press table and related sliders, and the necessary inspections must be carried out. If the small shaping size of the lower die base should be at least 40~50mm larger than the size of the leakage hole of the press table.

(3), choose large-scale precision mold mold base ZG35.ZG45.

(4) The parallelism of the upper and lower parts of the die base should meet the requirements, and the parallelism is generally grade 4.

(5) The upper and lower die base guide sleeves and guide post device holes must be common, and the accuracy is generally required to be below ±0.02mm; the axis of the die base guide post. The axis of the guide sleeve device hole should be straight with the upper and lower planes of the die base. For matching, the axial direction of the device guide post and guide sleeve device should be the same as the upper and lower plane pens of the die base. The device guide post generally requires level 4.

(6) The roughness of the upper and lower surfaces of the mold base is Ra1.6~0.8μm, if the parallelism can be guaranteed, it can be reduced to Ra3.2~1.6μm. The function of the gasket is to directly accept and disperse the pressure transmitted by the punch, reduce the unit pressure of the punch, and prevent the die seat from being pressed in. The shape and size of the backing plate is the same as that of the die, and the fixing method is fixed with screws and pins.

The above is related to the processing of automobile drawing parts. The processing of drawing parts must meet the performance and technical performance of the product, and at the same time, it must be assembled and repaired, so as to make full use of metal materials, reduce the types and standards of data, and minimize The consumption of data, when qualified, select the information with lower price, and try to make the parts as waste-free and waste-free as possible. Hope the above content is helpful to readers.

What are the bad reasons for welding sheet metal processing?

2. How does undercutting produce adverse phenomena?

There are two main reasons:

1. The welding control of Welding Brothers is not very good. The molten iron is blown away from the arc blowing force to form a pit.

2. If the current is too large, the front of the product will not fall off under no pressure.

3. How does the welding penetration cause the bad phenomenon?

1. The welding current is too large. Reduce the welding current.

2. The root gap is too large, and the cutting is not accurate. This can only be improved by the skill of the cutting master.

3. The welding speed is too slow, just speed up the welding speed.

4. The blunt edge is too small to reduce the root gap. According to the thickness of the workpiece, select the appropriate groove.

5. The welding arc stays for too long in a certain period, try to avoid the arc staying in a certain period for a long time.  

Well, the above is the relevant content about the reasons for poor welding sheet metal processing, I hope the above content will be helpful to readers!

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!