Molding Process
4 مشاهدة
Structural Factors of PC Stress Cracking
ظاهرة المشكلة
The products crack concentratedly at sharp corners, notches or wall thickness transitions, with cracks initiating from stress concentration points
تحليل الأسباب
Sharp corners, right angles and wall thickness transitions cause stress concentration, amplifying the local stress several times; PC has strong notch sensitivity, and stress concentration areas crack first under the action of solvents or loads
الحل
①Round all internal corners with R≥0.5mm and eliminate V-shaped grooves; ②control the wall thickness difference within 20% and the transition slope ≤1:3; ③rib thickness not exceeding 60% of the main wall thickness
الخلاصة الأساسية
Structural design determines the upper limit of the stress distribution of PC parts; fillets, uniform wall thickness and gentle transitions are the three anti-crack design principles, which must be implemented before mold making; 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!