Stamped parts have become popular in various industries. During the stamping process, the stamped parts after processing will definitely encounter size problems. In practice and exploration, we gradually improve the quality of stamped parts. Today, let's talk about the causes and solutions of cracks in stamping parts processing.
The cracks in the stamping parts are mainly caused by the strain of the material during the stretching process. The strain exceeds the limit, and the tensile strength of the material is insufficient, such as the fillet of the concave and convex die. If the local force is too large, it will also cause cracks. . Cracks caused by extension and inflow of punch tops or flanges when deformed during bulging, aging cracks: hardened parts that are severely formed, brittle and aggravated due to strain aging, and residual stress during forming. Due to this effect, the cracking of the stamping parts after stretching and bending mainly occurs at the mouth of the punch or die, which is caused by impurities in the material and unqualified material quality.
The preventive measures for cracks in stamping parts processing are: 1. In terms of materials, use materials with good tensile properties; 2. Select a reasonable blank size and shape; 3. Adjust the parameters of the tensile rod; 4. Reduce 5 .Improve the lubrication condition; 6. Adjust the pressure of the material; 7. Modify the craft of the auxiliary surface.
