How to solve the internal stress of injection molding
2024-10-28
The main method to solve the internal stress of injection molding
Adjust the injection temperature and mold temperature: appropriately increase the barrel temperature and mold temperature to ensure good plasticization of the material, so that the composition is uniform to reduce the shrinkage rate and reduce the internal stress.
Control the injection rate and pressure: use variable speed injection, that is, fast filling, when the cavity is full, switch to low speed to reduce molecular orientation. Reasonable design gate position, flat products are best to use slit, fan gate.
Heat treatment method: heat treatment method can be used to eliminate internal stress after the mold, the heat treatment temperature is about 120 degrees C, the time is about 2 hours.
Optimize the mold design: reasonable design of the pouring system and the ejection mechanism to avoid improper setting of the cooling system and unreasonable design of the inlet.
Select the appropriate injection molding process parameters: select the appropriate injection pressure and holding time to avoid excessive pressure or holding time.
Contact Us
E-mail :
whmingtai@vip.163.com
Zhou Zong:
86-13561806536
Address:
71-2 Dandong Road, Weihai Printing Industrial Park
71-2 Dandong Road, Printing Industrial Park, Gaoqu District, Weihai City
INQUIRY IMMEDIATELY