[Retracted] Research on the Injection Mold Design and Molding Process Parameter Optimization of a Car Door Inner Panel

Table 6

Analysis of variance of volume shrinkage.

Factors	Level1	Level2	Level3	Level4	Freedom	Mean-variance	F
Mold temperature	0.3045	0.3796	0.3851	0.3977	3	0.366725	24.81
Melt temperature	0.014025	0.0021	0.00115	0.000925	3	0.00455
Cooling time	0.2709	0.35745	0.4157	0.43245	3	0.369125	85.64
Holding pressure	0.30235	0.412375	0.207625	0.5181	3	0.360112	18.59
Holding time	0.296975	0.370125	0.41105	0.3987	3	0.369212	113.95