Molds & Tooling
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PU angle deviation
Problembeschreibung
PU product angle deviation >1°, exceeding ±0.5° tolerance
Ursachenanalyse
Uneven shrinkage causing angle change; mold angle design did not consider PU shrinkage compensation; product deformation during demolding
Lösung
1) Mold angle pre-compensation for PU shrinkage; 2) Extend cooling time to ensure setting before demolding; 3) Uniform cooling to reduce shrinkage difference
Wichtigste Erkenntnis
Angle deviation is caused by shrinkage and insufficient design compensation; pre-compensation is key
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