Injection Molding
5 مشاهدة
EVOH injection warpage deformation
ظاهرة المشكلة
EVOH injection molded product warps 2-3mm/100mm after demolding, flatness not meeting standard
تحليل الأسباب
EVOH shrinkage rate is large and mold temperature uneven, causing shrinkage differences in all directions; improper gate position with uneven release of flow orientation stress; insufficient cooling time
الحل
1) Increase mold temperature to 40-60°C to reduce temperature differences; 2) Increase holding pressure to 50-70MPa; 3) Optimize gate position for uniform flow; 4) Extend cooling time; 5) Annealing treatment to release residual stress
الخلاصة الأساسية
Warpage is caused by shrinkage differences and orientation stress; uniform mold temperature and holding pressure are key
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!