Molds & Tooling
3 조회수
PMMA Vent Groove Depth Improper
문제 현상
After adding vent grooves, flash appears at product edges, or vent grooves are too shallow and trapped-air burning remains unsolved.
원인 분석
When vent groove depth exceeds 0.04mm, PMMA melt penetrates to form flash; if depth is less than 0.02mm, venting is poor and the trapped-air problem remains.
해결 방법
①Control vent groove depth at 0.02~0.04mm; ②densify venting points according to defect locations; ③regularly clean accumulated material in vent grooves; ④verify venting effectiveness.
핵심 요약
Vent groove depth is a fine parameter of PMMA molds; take the specification range between preventing flash and ensuring venting, and arrange with emphasis at filling ends.; 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!