Injection Molding
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EMA '2079851475616104452 Severe Flash
Fenómeno do problema
EMA injection molded products have flash of 0.05-0.1mm and width >2mm at the parting line, requiring secondary trimming
Análise das causas
Injection pressure too high >80MPa, melt overflows from the parting line; insufficient clamping force; mold parting surface fitting gap >0.02mm
Solução
1) Reduce injection pressure to 60-70MPa; 2) Increase clamping force or use a larger-tonnage '2079851475616104452 machine; 3) Mold fitting gap <0.02mm; 4) Increase melt viscosity to reduce mold penetration tendency
Conclusão principal
Flash is caused by high-pressure injection and mold gap; reducing pressure and improving mold fitting are key
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