1、 Cause analysis

①Material issues: Quality problems with the stamping material itself are one of the main causes of cracking, which may include inclusions, defects, or uneven material or large differences in hardness.

②Mold problems: Poor mold quality or improper use can also easily lead to cracking of stamped parts. The wear and corrosion on the surface of the mold may lead to poor surface quality of the stamped parts, resulting in cracking.

③Problems in the processing: Problems in the stamping process are also common factors that cause cracking, such as improper adjustment of the punch press and incorrect gaps between molds. In addition, if other processing is carried out on the surface of the stamped part, such as heat treatment, if the corresponding standards cannot be met, it may also cause cracking of the stamped part.

2、 Solution method

①Solution to material problems: The selection and quality requirements of materials should be strictly controlled. For materials found to have problems, they should be replaced or returned to the supplier in a timely manner.

②Solution to mold problems: The quality and use of the mold should be reasonable, and necessary maintenance should be done every time it is used. Minimize the friction and wear issues of the mold as much as possible, while coordinating material selection, punching process, and other aspects.

③Solution to processing problems: The adjustment of the punch press should be strictly carried out according to the requirements, and the adjustment of the mold clearance should also be within the standard range. During the processing, strict inspection should be carried out on the surface heat treatment of stamped parts to ensure that the processing meets the requirements.

In short, cracking of stamped parts is a common problem in the manufacturing process. In addition to reasonable processing technology, strict quality control requirements must be adhered to to ensure that materials, molds, processing technology, and other aspects meet relevant standards, thereby reducing the probability of stamping part cracking and improving the process quality and safety of products.