Molds & Tooling
1 views
PA66 surface scratch
Problem Phenomenon
Parallel scratches appear on the side of PA66 deep-cavity parts after demolding
Cause Analysis
Insufficient draft angle or cavity polishing texture perpendicular to the demolding direction, demolding friction scratches the surface; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Solution
Cavity draft angle 0.5-1° and polish along the demolding direction; locally coat and repair scratched areas; use release agent as a transition; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Key Takeaway
Scratches are a draft angle and polishing direction problem, mold repair is fundamental; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
Was this helpful?
0 people found this helpful
Thank you for your feedback!