• June 21, 2024
  • Shatou, Changan, Dongguan, CN
metal stamping

What is metal stamping process?

Metal stamping is a commonly used metal processing technology. By placing the metal sheet on the punching machine and using the punch on the punching machine to perform operations such as punching, bending, stretching or pressing, the metal sheet is processed into parts of the desired shape or product. Metal stamping equipment includes punches, shears, dies, etc.

This article introduces the characteristics, technological process, common problems and solutions of metal stamping in detail.

Metal stamping process characteristics

Metal stamping has the characteristics of high efficiency, high precision, and low cost. It is suitable for mass production and can be used to manufacture various metal parts and products, such as auto parts, home appliance accessories, electronic product casings, industrial equipment, etc. The stamping process can also achieve efficient processing of metal parts of various shapes through mold design and manufacturing.

General process flow of metal stamping

1. Prepare materials

First, prepare the required metal materials according to the product requirements and design drawings. Commonly used metal materials include steel, aluminum, copper, etc.

2. Make the die

The stamping die is an important tool in metal stamping, which is used to process the metal material into the desired shape according to the design requirements. To make a die, it is necessary to consider the shape, size and process requirements of the product, and use appropriate materials and processing techniques to make it.

3. Perform stamping operations

The metal material is placed between the upper die and the lower die of the punch press, and through the movement of the punch press and the stamping action of the upper and lower dies, the metal material is plastically deformed under the action of the die to obtain the desired shape.

4. Inspect and organize finished products

In the stamping process, it is necessary to carry out timely inspection and quality control of the finished product to ensure that the product meets the design requirements. At the same time, it is also necessary to carry out surface treatment such as finishing and polishing on the finished product to improve the quality and appearance of the product.

5. Assembly, welding

If necessary, carry out subsequent assembly, welding and other processes. For some products, further assembly, welding and other processes may be required to complete the final product.

6. Pack and ship the product

Finally, the finished product is packaged for easy transportation and storage.

Common problems and solutions

Some common problems that can arise during metal stamping, here are some common problems and how to fix them:

1. The size of the stamping part is too large or too small

This may be caused by problems in mold design or manufacturing.

The solution is to correct or replace the mold, and perform dimensional inspection and calibration.

2. Blemishes or dents on the surface of the stamping part

This problem may be caused by worn dies or poor friction.

The solution is to check and maintain the mold regularly, and use lubricants appropriately to reduce friction.

3. Uneven or too large acute angle of the stamping parts

This may be caused by unreasonable mold design or uneven stamping force.

The solution is to redesign the die and adjust the stamping parameters to ensure an even distribution of the impact force.

4. Deformation or excessive stretching of stamping parts

This may be caused by insufficient strength of the metal material or excessive stamping force.

The solution is to choose the appropriate metal material, and adjust the punching force and speed to avoid excessive deformation or stretching.

5. Cracks or cracks in the punched hole

This problem can be caused by the brittleness of the material or the wrong size of the die.

The solution is to choose a more ductile material and reduce stress concentrations by optimizing the mold design.

6. Mold wear or damage

This may be caused by long-term use or improper use.

The solution is to regularly check and maintain the mold, and replace damaged parts in time.


As an important metal processing method, metal stamping is widely used in automobile manufacturing, electronic equipment, home appliances, aerospace and other fields. With the continuous advancement of science and technology, the stamping process is also constantly improving and innovating, so that it can adapt to more complex product requirements. The advantages of high efficiency, precision and good repeatability of metal stamping make it an indispensable part of modern manufacturing.

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