Material Drying
5 مشاهدة
PBT First Article Verification
ظاهرة المشكلة
After material change and mold change, warpage and performance fluctuations appear in batches, and the first article only checks appearance and dimensions
تحليل الأسباب
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
الحل
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
الخلاصة الأساسية
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
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!