气辅注射成型工艺参数对气体穿透行为的影响

Influence of Processing Parameters of Gas-assisted Injection Molding on Gas Penetration Behavior

考察了气辅注射成型工艺参数(延迟时间、气体压力、熔体温度、预注射量)对气体穿透行为的影响。研究表明,延迟时间越短、熔体温度越高,残余壁厚越小。另外,预注射量、延迟时间和熔体温度对穿透长度的影响最为显著,即预注射量越大、延迟时间越短、熔体温度越低,穿透长度越长。结合此前研究者的数值模拟结果可以看出,残余壁厚率与通过数值方法得到的结果是较为一致的。

The influence of processing parameters （delay time, gas pressure, melt temperature, shortshot size） of gas-assisted injection molding on the gas penetration behavior （residual wall thickness, penetration length） was studied. It showed that the shorter delay time and higher melt temperature, the smaller the residual wall thickness. In addition, shorter delay time, lower melt temperature, and larger short-shot size may result in larger penetration length. By comparison. the residual wall thickness ratio obtained from this experiment was consistent with that from a previous simulation.