Injection Molding
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Burnt yellow spots on injection molded products
Fenómeno do problema
Yellow-brown burnt spots appear locally on the product, accompanied by an odor
Análise das causas
>260C local overheating causes material decomposition in dead corners, producing HF
Solução
Lower the temperature, check temperature control elements, reduce dead corners, and reduce the injection speed
Conclusão principal
Thermal decomposition produces HF and must be strictly avoided
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