In our daily life, many of the products are precision metal stampings. From auto parts to pins, precision metal stampings are widely used in various platforms of our lives. What are the characteristics and common problems of metal stampings? Let's have a look!

The main features of precision metal stampings are as follows:
1. Metal stampings are made by stamping with less material consumption. The parts are light in weight and have good stiffness. After plastic deformation of sheet metal, the internal layout of metal is improved and the strength of stamping parts is improved.

2. The dimension of metal stamping parts is symmetrical with the module, with high accuracy and good interchangeability. It can meet the requirements of common equipment and applications without further processing.
3. In the stamping process, because the material surface has no damage, the surface is bright and beautiful, and the quality is good, it provides convenient conditions for surface treatment such as painting, electroplating, phosphating, etc.

Common reasons for precision metal stamping:
1. Burr: incomplete residual materials are left when punching or chamfering, and burrs appear at the lower part of the steel plate cutting surface. When the burr height is greater than 0.2mm, the iron powder will damage the mold, resulting in convex concave.
2. Scratches: The main cause of part scratches is that sharp scratches or metal dust on the mold fall into the mold. To prevent scratches on the mold, it is better to remove metal dust in advance.
3. Bottom crack: the main reason for the bottom crack of the part is poor plasticity or the die blank holder is pressed too tightly. It is recommended to replace the material with good plasticity or loosen the blank holder.
4. Side wall wrinkling: The main reason for the side wall wrinkling of parts is that the material thickness is insufficient (less than the allowable thickness) or the deviation is large when placing high and low molds, resulting in a large gap on one side and a small gap on the other side. It is recommended to replace the material or readjust the mold.

Design standards for precision metal stampings:

The designed stamping parts need to meet the use and technical performance of the product, which is convenient for equipment and maintenance. Stamping parts need to help improve the utilization rate of metal materials, reduce the types and specifications of materials, and minimize the consumption of materials. If allowed, old materials shall be used. If parts can be punched, materials shall be consumed as little as possible.

The stamping parts shall be reasonably arranged and have simple appearance, which is conducive to simplifying the mold layout and process quantity, that is, reducing the mold layout and process quantity. The simple stamping process can realize the processing of all parts, reduce the application of other technologies, facilitate the stamping operation, mechanization and automatic manufacturing, and improve the task manufacturing rate. The designed stamping parts shall have lower dimensional accuracy grade and surface roughness grade to facilitate product exchange, reduce high consumption and ensure stable product quality. The designed stamping parts shall be as conducive to the use of existing equipment, processing equipment and process flow as possible, and be conducive to extending the service life of the stamping die.