Three major defects of stamping parts and improvement measures

The quality of stamping products has certain quality standards. If there are some problems in the production process, it will cause defects and affect the quality of the product. Of course, in the production process, there may be many kinds of problems. Today we have specifically selected three common problems in stamping parts processing to explain, hoping to give you some help. First, the middle part of the tapered parts and hemispherical parts of the stamping parts is wrinkled: First, the reason for this situation is: during the stretching process, because the material is close to the suspended state at the beginning of the processing, and the blank holder force If it is too small, the corner radius of the die is too large, or too much lubricant is applied, which leads to a smaller radial tensile stress. In this case, the stamping material loses stability, so wrinkling problems will occur. The improvement measures that should be taken are: appropriately increasing the blank holder force or adopting a rolling rib structure, reducing the radius of the die fillet, and increasing the material thickness. Second, pull marks on the surface of the stamping parts: There are many reasons for this problem, such as the surface of the mold used is damaged, or the gap is uneven, or the surface of the die fillet is rough, or the surface of the material has debris And so on, will cause pull marks on the surface of the stamping parts. In this case, we must deal with specific reasons. Remember, we must first find out the real reason, and then deal with it in a targeted manner. For example, if it is caused by debris, you need to keep the surface of the convex and concave mold clean, and you must do a good job of cleaning it before processing. Third, the straight wall part of the stamping part is not flat: If this problem is encountered in the production work, then we need to consider from three aspects. First, check whether there is a design and manufacturing vent on the punch , It should be determined that there is a vent; second, considering the rebound effect of the material, the shaping process should be increased; third, check whether the gap between the punching and concave molds of the stamping parts is reasonable, and the gap must be adjusted evenly. Related news: The characteristics of the main materials of stamping parts, the treatment of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections