Molds & Tooling
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POM mold temperature 80-100
Problem Phenomenon
POM products produced at a mold temperature of 60°C have unstable dimensions and a hazy surface
Cause Analysis
When the mold temperature is low, POM crystallizes quickly but insufficiently, post-crystallization causes dimensional drift, and poor surface replication causes haze; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Raise the mold temperature to 80-100°C to ensure sufficient crystallization; mold temperature above 90°C for precision parts; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
POM dimensional stability relies on sufficient crystallization at high mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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