Molds & Tooling
4 조회수
Extremely low strength at weld lines
문제 현상
Obvious line marks appear at melt merging points of multi-gate products, and tensile tests all break there
원인 분석
The merging melt temperature is too low to achieve sufficient molecular diffusion and entanglement; vent groove design is insufficient, causing trapped air; dispersed phase particles enrich at the weld interface
해결 방법
Increase melt temperature by 10-20°C and mold temperature; optimize gate position to reduce the number of weld lines; add vent grooves (depth 0.02-0.05mm)
핵심 요약
Weld lines are structural stress concentration points, and their strength depends on the degree of interfacial molecular diffusion
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!