How to deal with the problem of surface roughening of automobile stamping parts?

In the production process of stamping parts, the surface roughness of parts is a common quality defect. This problem is common in various manufacturers. This problem affects the stability and efficiency of the product, and also causes more serious wear of the mold, which may lead to Parts are scrapped in batches, the life of the mold is shortened and the accuracy of the parts is affected. At the same time, more energy is invested in manpower to repair the mold and manage the cost, so don’t look at a small problem, the chain problem caused by it is really not small, then how should we usually deal with it? ?

How is the surface roughening of automobile stamping parts produced? In essence, it is due to the local adhesion between the mold and the parts. There are many ways to improve this problem, but the basic principle is to improve the properties between the mold and the parts, so that the two do not adhere. Click to get started:

• 1. Select the appropriate mold material: the mold material generally chooses high-quality materials such as Cr12MoV, SKD11, and the hardness after heat treatment can reach between 58-62;
• 2. Prepare the mold blanks before making the molds: ensure the smoothness of the mold blanks, because if there are pores and impurities in the mold blanks, the parts will also be rough, and the mold blanks are ground to ensure the smoothness. Maintenance can ensure the accuracy and life of the mold;
• 3. Rational use of lubricating oil: In the production process, the rational use of lubricating oil can effectively reduce the dryness of the friction between the mold and the parts, and reduce the hair pulling; generally, manual oiling or automatic oiling is used. At the same time, it can also effectively Reduce parts cracking and other problems; the disadvantage is that the use of lubricating oil will cause oil pollution on the work surface or the ground, and it needs to be cleaned after use;
• 4. Surface treatment of the mold: Here, the surface treatment of the mold is to plate the surface of the mold with hard chrome. The surface of hard chrome plating can ensure smooth and clean, and the hardness can reach about HV1000, which can effectively reduce the phenomenon of pulling parts, but after a strong pressure impact After or when parts fall off, it is not conducive to production;