Analysis of the causes of drawing wrinkles and wall cracks of metal tensile parts

Stamping and drawing products have already developed into all walks of life, and some product quality problems will occur during the production and processing process. Stretching wrinkles and wall cracks are among them. So what caused this? The precision team will analyze for you next to avoid these problems. We have more than 10 years of experience in the customization of precision metal drawing parts and have accumulated a wealth of experience. 1. Stretching and wrinkling is because the blank holder force at the flange is too small to resist excessive tangential compressive stress; it causes tangential deformation and loses stability to form wrinkles. Thinner materials are easier to form wrinkles. This needs to be improved by stamping parts processing plants by increasing the blank holder force of the blank holder and appropriately increasing the thickness of the material. 2. The wall is stretched. The reason for the wall is that the radial tensile stress that the material bears during deep drawing is too large; the corner radius of the die is too small; the deep drawing is poorly lubricated; the raw material has poor plasticity. We need to reduce the blank holder force; increase the fillet radius of the die; use lubricants correctly; select materials with better quality or increase the annealing process between the workshops. Above, I hope to bring you a little help. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)