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What are the defects on the outer surface of the stamping parts?
With the development of society, stamping products have been popularized in all walks of life. It is very important to process high-quality stamping parts. In stamping processing, many defects will occur on the surface of the product. What is going on? In the processing of stamping parts, sometimes there will be problems such as impact line, slip line, collapse, pit, surface distortion, etc. For stamping plate parts, defects on the outer surface are not allowed. How is this caused? ? 1. The impact line and the slip line are mainly caused by the surface scratches caused by the friction between the sheet metal and the mold during the stamping process. Collapse, concealed pit, second, surface distortion is mainly due to insufficient part deformation, small local material strain, and defects that appear after the external force is released; then how to eliminate these defects? ), to eliminate the impact line, you can increase the drawing depth by changing the stamping fillet, the die fillet, and change the blanking surface. ), to eliminate the slip line, you can change the product shape (left-right symmetry), increase the resistance, etc. ), to eliminate collapse and surface distortion, the level of stress gradient generated by the part in the deformation zone should be understood, and the uniformity of the plastic deformation of the product should be ensured as much as possible. At the same time, by increasing the resistance, increasing the local shape strain and other means. With the development of technology and CAE simulation and application, more and more defects can be identified in the simulation. For example; through the tangential displacement field of the forming, the flow of the material can be understood, and it can provide help to better solve the defects generated during the forming of the part. Recommended article: The process and characteristics of spinning in the stamping process Previous: Stamping factory, introduce the basic knowledge of electroforming