Injection Molding
6 조회수
PPS injection speed medium speed
문제 현상
After high-speed injection, the product end is burnt and flashes, while low speed causes weld lines and insufficient filling
원인 분석
PPS melt has good flowability but high-speed injection produces shear heat and air trap burning; low speed causes flow front cooling and obvious weld lines; medium speed as the main, appropriately faster for thin-walled parts is the conventional strategy
해결 방법
①Injection speed based on medium speed; ②appropriately increase speed for thin-walled long-flow parts; ③reduce speed at the end to prevent air trap burning; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
PPS speed strategy is medium-speed keynote plus end deceleration; the balance of shear heat and weld lines relies on segmented curves; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!