Material Drying
6 مشاهدة
Product cracks during subsequent use or storage
ظاهرة المشكلة
The product cracks during subsequent use or storage, cracks mostly appear at stress concentration sites (gate, weld line, corners)
تحليل الأسباب
Injection residual stress too large, not eliminated
Demolding force too large, causing microcracks
Cellulose acetate butyrate absorbs moisture, internal expansion stress superimposed
Stress concentration at the gate area
Unreasonable product design, corners without rounded transitions
الحل
Annealing treatment to eliminate residual stress
Optimize demolding to reduce damage
Control moisture absorption environment and storage temperature
Optimize the gate to reduce stress concentration
Design rounded corners R≥0.5mm, avoid sharp corners
الخلاصة الأساسية
Internal stress cracking requires eliminating residual stress and optimizing design
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!