Injection Molding
7 조회수
PEI Injection Speed Management
문제 현상
Improper PEI injection speed settings cause filling defects or shear problems; the speed window is difficult to grasp.
원인 분석
PEI's high viscosity requires a relatively high injection speed, recommended at 50~80% of the screw's maximum speed; too fast causes shear heat and air entrapment; too slow causes front freezing and short shots; multi-stage injection balance.
해결 방법
①Injection speed in the range of 50~80% of the screw's maximum speed; ②multi-stage injection curve optimization; ③appropriate speed control in the gate area; ④verify filling status with short shot tests.
핵심 요약
The 50~80% of PEI injection speed is quantitative guidance; multi-stage curves are a refined means; short shot tests provide intuitive verification.; 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!