Reasons for the high scrap rate of metal stamping parts

2021-06-21

When metal stamping parts manufacturers are performing stamping processing, the scrap rate is often too high, the scrap rate is high, and the production cost is also increasing, and it does not conform to the concept of energy saving and environmental protection. Especially when profits have been compressed, it is particularly important to solve the problem of high scrap rate of metal stamping parts. Let's take a look at the reasons for the right, and then prescribe the right medicine.

1. The material quality is not good enough.
Raw materials are a guarantee for processing qualified stamping parts. If the hardness and surface of the raw materials do not meet the quality requirements, the corresponding stamping parts scrap rate will definitely be too high. Especially for some stamping parts with relatively large deformation, it is easy to crack and break. Therefore, when purchasing raw materials, you must find a reliable and regular material supplier.

2. The installation of the stamping die is unqualified.

The installation of the stamping die does not meet the specifications, which results in the upper die and the lower die not being able to cooperate well during the stamping process, resulting in a high rejection rate. Stamping dies are the basis for processing stamping parts. Installation is very important on the premise that there is no problem with the mold. Even a small error may cause the stamping parts produced to be scraps. When installing the stamping die, the concentricity, gap, flatness, etc. of the upper and lower dies all play a very important role.
3. The mold is worn out.

In the long-term use of the stamping die, wear or loose fittings will also cause the product to be scrapped. Some stamping factories do not perform routine inspection and maintenance of the mold after the mold is installed for production. Only when the burr is relatively large, the mold is removed and the knife edge is simply sharpened. As everyone knows, the wear of the mold is not only the wear of the knife edge, but also some mold parts will wear with the use. After these parts are worn, it will affect the accuracy of the entire mold.

4. The positioning device is not accurate.

In the feeding process, the mold positioning device is inaccurate, which will cause problems in the coordination of each process, and will also lead to waste products.

5. Irregular operation by workers.

Workers did not follow the installation manual when operating the press, or there was an error in feeding.
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