Molds & Tooling
2 views
Insufficient EAA flatness
Problem Phenomenon
EAA flat products with flatness >0.5mm/100mm, warped
Cause Analysis
EAA shrinkage rate large and anisotropic; uneven mold cooling; residual stress release causing continuous warpage
Solution
1) Uniform mold temperature to reduce temperature difference; 2) Increase holding pressure to reduce shrinkage difference; 3) Anneal to release residual stress
Key Takeaway
Insufficient flatness is caused by shrinkage difference and stress; uniform cooling and annealing are key
Was this helpful?
0 people found this helpful
Thank you for your feedback!