The main reasons for the unevenness of the metal stamping parts are usually due to dust or iron filings adhering to the raw materials or the appearance of the molds. So, how can we avoid this problem? Let's briefly discuss it below:

Several measures for preventing the unevenness of the metal stamping parts include:

1. Inspection and correction of the die for stamping parts: The drawing die needs to undergo regular inspections and maintenance to minimize the occurrence of protrusions and depressions and maintain a stable state. The common practice is to use samples to check for adhesive scratches on the draw ring and the processing surfaces (the rounded corners of the concave die and the rounded corners of the convex die).

2. Inspection and correction of the cutting die for the metal stamping parts: The reason for the protrusions and depressions after the cutting process is that iron powder was generated during the cutting. Therefore, before the stamping, it is necessary to observe the iron powder to prevent the occurrence of protrusions and depressions.

3. Appropriate speed of the mechanical hand: For semi-automatic deep drawing mold production, when the deep drawing punch is in the lower mold position and the speed of the mechanical hand is very fast, burrs will fall onto the upper part of the punch, causing deformation. To avoid this problem, we can conduct a sample discharge test before production to reasonably set the speed and discharge angle of the mechanical hand, so that it will not touch the sample or the lower mold.

4. Inspect the cutting section: When cutting the rolled material, the wear and damage of the cutting die will cause many tiny iron particles to adhere to the cutting edge. Therefore, before the stamping production, it is necessary to inspect the double-cutting section in the material area or on the stamping line to promptly clean the sheet material and remove the burrs.

5. Inspection of the sheet material cleaning device: Before the production of the metal stamping parts, it is necessary to simultaneously inspect and adjust the cleaning setup to make it more effective in cleaning the sheet materials. This is also very necessary, and attention should also be paid to the gap of the rollers and the quality of the cleaning oil. The detailed method is to apply red paint on a piece of steel plate and then pass it through the cleaning setup. Afterward, check the original shape of the red paint being removed. If the removal rate does not meet the standard, then the cleaning setup must be inspected and adjusted. When the cleaning oil is insufficient, it must be replenished in time.