Injection Molding
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Burnt yellow spots on injection molded products
Problembeschreibung
Yellow-brown burnt spots appear locally on the product, accompanied by an odor
Ursachenanalyse
>260C local overheating causes material decomposition in dead corners, producing HF
Lösung
Lower the temperature, check temperature control elements, reduce dead corners, and reduce the injection speed
Wichtigste Erkenntnis
Thermal decomposition produces HF and must be strictly avoided
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