7 common problems in sheet metal processing and stamping parts processing

Take a look at how to solve problems encountered during sheet metal stamping

1. Burrs: There is incomplete residual material during the punching or corner trimming process, and burrs are 

generated under the cut-off surface of the steel plate. Based on the cut-off surface, when the burr height is 

more than 0.2mm, the burrs will cause damage to the mold.

2. Concave and concave: The surface of the metal plate is uneven and has concave and convex phenomena, 

which is caused by foreign matter (iron filings, dust) mixed in the uncoiled wire.

3. Roller marks: This is caused by foreign matter adhering to the cleaning roller or feeding roller during sheet metal 

processing (occurs at a fixed pitch). Generally, the roller mark on the sheet can be removed.

4. Sliding mark: caused by roller sliding, which occurs when suddenly stopping or accelerating.

Coil material crushing and edge wrinkling: Wrinkling occurs when the gap between the guide rollers of the 

unwinding line or the guide roller on the mold is small, due to unbalanced feeding of the coil material.

5. Scratches: The main reason for scratches on parts during the sheet metal stamping process is that there are 

sharp scratches on the mold or metal dust fell into the mold. To avoid this, it is necessary to repair the scratches 

on the mold and grind the mold. Remove metal dust.

6. Bottom cracking: The main reason for cracking at the bottom of the part is that the material has poor plasticity 

or the mold blanking ring is pressed too tightly. The preventive measures are to replace the material with better 

plasticity or loosen the blanking ring.

7. Wrinkles on the side wall: The main reason for wrinkles on the side wall of the part is that the thickness of 

the material is not enough or there is a deviation during the installation of the upper and lower molds, resulting 

in a large gap on one side and a small gap on the other side. The preventive measures are to replace the material

 in time and readjust it. mold.