Molds & Tooling
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PA66 demolding deformation
Problem Phenomenon
PA66 thin-wall parts deform after ejection and cannot recover after placement
Cause Analysis
Product temperature is too high and rigidity insufficient at demolding, and ejection force causes plastic deformation; residual stress from uneven cooling also participates; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Solution
Extend cooling time; enlarge and uniformize ejection area; check mold temperature and water temperature; structurally strengthen deformed areas; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Key Takeaway
Demolding deformation requires checking three aspects: temperature, ejection, and structure; 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
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