Injection Molding
7 조회수
PEI Flash
문제 현상
Flash appears on the parting line of PEI products; high-pressure injection and insufficient clamping force act together, making deflashing difficult.
원인 분석
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.
해결 방법
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.
핵심 요약
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
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!