Processing Machinery
3 조회수
PA66 warpage
문제 현상
Product warpage, obvious on flat parts.
원인 분석
Shrinkage 1.5%~2.5% and anisotropic; uneven cooling, improper holding; fiber orientation in GF grades aggravates it; differential shrinkage of crystalline materials is the root cause; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience.
해결 방법
①Balanced mold temperature control at 80~100℃; ②optimize holding pressure and switchover point, taking into account both feeding and internal stress; ③optimize wall thickness uniformity to reduce differential shrinkage; ④adjust gates for GF parts; ⑤use shaping fixtures to constrain cooling after deformed parts are ejected.
핵심 요약
PA66 warpage='shrinkage anisotropy management': balance mold temperature, restrain holding pressure, optimize gates; GF grades especially need adjustment at the fiber orientation source; 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!