Common defects and solutions of PCB punching (6)
6. Rough section
Cause
The blanking gap between concave and convex dies is too large; the edge of the concave die is worn seriously.
The punching force of the punch is insufficient and not stable. 3). The sheet blanking performance is poor. For example, the base material has too high a glue content, the base material, aging, and low bonding power.
Solution
Choose appropriate punching gaps for concave and convex dies.
Repair the cutting edge of the die in time.
Select the substrate with better punching performance and strictly control the preheating temperature and time according to the process requirements.
