Injection Molding
4 مشاهدة
PEI Flash
ظاهرة المشكلة
Flash appears on the parting line of PEI products; high-pressure injection and insufficient clamping force act together, making deflashing difficult.
تحليل الأسباب
PEI injection pressure is relatively high at 80~120MPa; when clamping force is insufficient, the melt squeezes into the parting line; clamping force needs to be calculated at ≥50MPa per projected area; mold wear widens the gap.
الحل
①Calculate clamping force at ≥50MPa per projected area; machines of ≥500 tons are recommended, calculated by area; ②grind and fit the parting line; ③optimize injection pressure not to exceed the necessary value; ④regularly check mold wear.
الخلاصة الأساسية
The clamping force calculation for PEI high-pressure processes cannot be omitted; 50MPa specific pressure is a clear standard; mold maintenance prevents gap widening.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!