Material Drying
3 조회수
PBT First Article Verification
문제 현상
After material change and mold change, warpage and performance fluctuations appear in batches, and the first article only checks appearance and dimensions
원인 분석
PBT is sensitive to drying, temperature, and residence, and shrinkage and warpage behavior changes after changing grades; if the first article does not verify moisture content and warpage, batch risk is out of control; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
①The first article performs four verifications: appearance, dimensions, warpage, and moisture content; ②For glass fiber grade material change, do a warpage comparison; ③Mass production after parameter locking; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
핵심 요약
PBT first article verification must include warpage and material state; four verifications plus parameter locking prevent batch accidents; 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!