Method to reduce the unevenness of stamped parts:

The causes of concave and convex metal stamping parts are mostly caused by dust or iron filings attached to the raw materials or mold appearance, which not only lowers the appearance and character of the product, but also greatly reduces productivity. So how can we avoid this problem? The following are 5 methods to reduce the unevenness of hardware stamping parts based on practical experience.
Five methods to reduce the unevenness of stamped parts:
1. Inspection and correction of drawing dies: Drawing dies require regular inspection and maintenance to reduce the generation of bumps and maintain a stable state. The usual practice is to use a sample to check the adhesion, scratches, and machining surface (concave mold fillet, convex mold fillet) of the edge pressing ring.
2. Inspection and correction of the shearing die: The reason for the occurrence of convexity and concavity after the shearing process is due to the production of iron powder during the shearing process. Therefore, it is necessary to observe the iron powder before stamping to avoid the occurrence of convexity and concavity.
3. Appropriate robot speed: For semi-automatic drawing die production, when the drawing punch is in the lower die position and the robot speed is fast, burrs will fall on the upper part of the punch, causing convexity and concavity. To avoid this problem, we can conduct a discharge test of the workpiece before production, and set the speed and discharge angle of the robotic arm reasonably to prevent it from touching the workpiece and the lower mold.
4. Check the cross-section: When cutting off the coil material, the wear and damage of the cutting die can cause many small iron powder to adhere to the edge. Therefore, before stamping production, it is necessary to check the double cross-section in the material area or stamping line, and clean the sheet material in a timely manner to remove burrs.
5. Inspection of the plate cleaning device: Before stamping production, it is necessary to simultaneously inspect and repair the cleaning and settling to make it more effective in cleaning the plate. This is also necessary, and it is also necessary to pay attention to the roller gap and the quality of the cleaning oil. The detailed method is to apply red paint to a steel plate and then clean and settle it. If the removal rate is not up to standard, it is necessary to inspect and repair the cleaning and settling of the cause of the removal of red paint. When there is a shortage of cleaning oil, it is necessary to do so in a timely manner