Injection Molding
8 مشاهدة
POM Pressure Sensitivity for Flow Adjustment
ظاهرة المشكلة
Raising barrel temperature to improve flowability is ineffective and instead causes degradation; the part is still underfilled
تحليل الأسباب
POM melt viscosity is insensitive to temperature and approximates a Newtonian fluid, so raising temperature has poor viscosity-reducing effect and approaches the decomposition temperature; it is sensitive to injection pressure changes, so flow adjustment should follow the pressure and speed route
الحل
①To improve flow, prioritize increasing injection pressure and speed; ②set temperature only according to the window baseline; ③if necessary, reduce nozzle size to increase shear; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
الخلاصة الأساسية
The correct means of adjusting POM flow is pressure, not temperature; the temperature-raising route is a typical wrong direction for POM; 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!