Injection Molding
12 görüntüleme
Burning During High-Speed Filling of PBT '2079851475616104452
Sorun Belirtisi
Burnt black specks or brown marks appear at the end of PBT products.
Neden Analizi
The cavity venting is poor, and the air is rapidly compressed and heated, burning the material (diesel effect); the injection speed is too fast, and the air has no time to be discharged.
Çözüm
Improve cavity venting and increase the number and depth of vent grooves; appropriately reduce the injection speed; optimize the gate position.
Temel Çıkarım
PBT burning originates from insufficient venting.
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