Extrusion & Post
11 조회수
PMMA Extruded Sheet High Internal Stress
문제 현상
Extruded acrylic sheets frequently crack during machining, while cast sheets with the same process are fine
원인 분석
The extrusion process freezes molecular orientation, forming higher internal stress; extruded sheets have lower stress tolerance than cast sheets, and design parameters and machining allowances must be treated differently; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
①Choose low-stress cast sheets for high-requirement parts; ②anneal extruded sheets before machining; ③avoid stress concentration structures in extruded sheet design; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
핵심 요약
The essential difference between cast and extruded sheets lies in stress level; clarify sheet type during material selection; annealing extruded sheets before machining is an iron rule; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!