Molds & Tooling
5 조회수
Insufficient PPO Weld Line Strength
문제 현상
The weld line strength of PPO multi-gate products is low, cracking occurs under stress, and the confluence area has both appearance and performance defects.
원인 분석
The high-viscosity PPO melt fronts do not converge and entangle sufficiently; low mold temperature cools the melt front; poor venting weakens the interface; gate layout places the weld line in the stressed area.
해결 방법
①Increase mold temperature and injection speed to strengthen convergence; ②strengthen venting in the confluence area; ③adjust gate layout to move the weld line position; ④use overflow wells if necessary to improve interface quality.
핵심 요약
PPO weld line treatment mainly relies on temperature and speed; gate layout determines the position at the design stage; overflow wells are an effective means for load-bearing parts.; 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!