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Analysis and treatment of common problems of metal stamping parts?

  • 2022-03-09
The common defects of metal stamping parts are: deformation and burr of blanking parts; Crack, warpage, surface scratch, angular deformation, etc. of bending parts; Flange wrinkle, wrinkle of drawing wall, damage and crack of drawing wall of drawing parts; Flanging crack, uneven bulging, etc. Methods for preventing and eliminating defects of metal stamping parts:

1. Die design should have reasonable punch and die clearance, fillet radius and machining accuracy;

2. When designing the bending die, effective measures should be taken to reduce the springback and subtract the springback from the die;

3. Reasonably designed fillet to prevent bending crack. Blank holder ring shall be used to prevent wrinkling during deep drawing, and the pressure shall be moderate;

4. Use proper lubrication to reduce the drawing resistance, so as to prevent the die from sticking or the workpiece from being pulled through.

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