Study on Injection Molding Process Simulation and Process Parameter Optimization of Automobile Instrument Light Guiding Support

Table 9

Comparison of quality evaluation indices of the Taguchi orthogonal test and the grey correlation degree.

Index	Influence factors	Process parameter combination	Volume shrinkage (%)	Amount of warping (mm)
Warpage amount analysis based on Taguchi orthogonal test	C > B > D > E > A	A1B1C2D4E4	6.721	2.001
Volume shrinkage rate analysis based on Taguchi orthogonal test	E > B > D > A > C	A4B4C1D4E1	12.56	1.763
Grey correlation analysis	E > D > A > B > C	A1B1C4D4E4	6.753	1.999

Note: A is mold temperature, B is melt temperature, C is cooling time, D is packing pressure, and E is packing time.