Due to high temperature and high pressure conditions of Bi-layered rapid heating cycle molding(Bi-layered RHCM)

the molding shrinkage of its products is extremely sensitive to the change of process parameters

therefore

the key to improve quality of products is the strategy of molding shrinkage control.In order to explore and develop the strategy of molding shrinkage control

a remote control's front cover of air conditioner was an example for molding in this paper.Determined a multi-objective evaluation system and process parameters for measuring molding shrinkage.Latin Hypercube Sampling was used to design experiments

moreover

a numerical simulation software named Moldflow was used to simulate mold filling

pressure maintaining and cooling process to obtain test data.The mathematical relationship between parameters and evaluation index was estabilished by Kriging model.In order to find out the optimal evaluation index of molding shrinkage and corresponding process parameters

the mathematical relationship was iterative calculation by means of genetic algorithm(GA).Both simulation and production test were applied to verify the strategy of molding shrinkage control based on Kriging model combined with GA

and provide the reference of molding shrinkage control of Bi-layered RHCM.