Modelling and simulation of injection moulding process is an important technique that could shorten production cycle time with improved productivity for defect-free parts. This technique is more suitable for micro-injection moulding (μIM) process as likely defects during production can be predicted. Therefore, this study aims to investigate the effect of runner dimensions on quality of moulded parts. Solidworks plastic simulation software was used for mould cavity filling analysis of ASTM D638-10 Type V. The dimensions of the runner and the injection point investigated are 0.5 mm, 0.8 mm, 1 mm and 2 mm. The moulded part quality characteristics predicted are filling time, sink mark and air trap. In addition, analytical model for prediction of melt pressure as a function of both melt filled distance (xo) and the temperature is developed. The theoretical model and simulation software are useful for investigations of defect-free parts in μIM process.
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机译：注射成型过程的建模和仿真是一项重要的技术，可以缩短生产周期并提高无缺陷零件的生产率。由于可以预测生产过程中可能出现的缺陷，因此该技术更适合于微注射成型（μIM）工艺。因此，本研究旨在研究流道尺寸对成型零件质量的影响。使用Solidworks塑料仿真软件对ASTM D638-10 Type V进行模腔填充分析。所研究的流道尺寸和注射点分别为0.5 mm，0.8 mm，1 mm和2 mm。预测的成型零件质量特征是填充时间，缩痕和气阱。另外，建立了用于预测熔体压力与熔体填充距离（xo）和温度的函数关系的分析模型。理论模型和仿真软件可用于研究μIM过程中的无缺陷零件。
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