Injection Molding
4 Aufrufe
EMA Injection Gate Freezes Too Early
Problembeschreibung
The gate of EMA injection molded products freezes within 0.5-1s during the holding stage, holding pressure cannot be transmitted, product shrinkage severe
Ursachenanalyse
Gate size too small, diameter <1mm, causing rapid freezing; injection temperature low; mold temperature low, accelerating gate cooling
Lösung
1) Increase gate diameter to 1.5-2mm; 2) Increase injection temperature to 160-210°C; 3) Increase mold temperature to 40-50°C to delay gate freezing; 4) Holding pressure decays in steps rather than sudden release
Wichtigste Erkenntnis
Premature gate freezing is caused by small gate and low temperature; enlarging the gate and increasing temperature are fundamental measures
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!