OPTIMIZATION OF PLASTIC INJECTION MOULDING PROCESS PARAMETERS USING TAGUCHI METHOD FOR SINK MARK DEFECT

MOHD HAIROL MIZZAM BIN HARIS; SUZANA BT SHAFEI; NOR RUZANNA BT ABD RAHMAN

MOHD HAIROL MIZZAM BIN HARIS DEPARTMENT OF MECHANICAL ENGINEERING POLITEKNIK SULTAN ABDUL HALIM MUAD'ZAM SHAH
SUZANA BT SHAFEI DEPARTMENT MECHANICAL ENGINEERING POLITEKNIK SULTAN ABDUL HALIM MU'ADZAM SHAH
NOR RUZANNA BT ABD RAHMAN DEPARTMENT MECHANICAL ENGINEERING POLITEKNIK SULTAN ABDUL HALIM MU'ADZAM SHAH

Abstract

Injection Moulding is common process to supply plastic products. In design of the injection moulding product, determination of the optimal process parameters in injection molding is an important task as it influences part quality, production rate, and production cost and energy consumption. Obtaining optimum process conditions and mould design is that the key problem to spice up the part quality. Sink mark is one altogether several important flaws of injection molded parts. During this text, numerical simulation is combined with Taguchi design-of-experiment (DOE) technique to research the influence of process conditions and cavity geometry on sink mark of the injection molded part and optimize process conditions and cavity geometry. Simulation process parameters involved during this study melting temperature and injection pressure. During this study, polypropylene was injected in souvenir plate shape product under various processing parameters. Moldflow software simulated the injection process to check the effect of process parameters on sink deflection of the souvenir plate. The orthogonal Arrays of Taguchi and signal to noise ratio utilized to travel searching the optimal levels and to point the impacts of the tactic parameters on sink mark. The foremost significant parameters found were the melt temperature for the design.

KEYWORDS: Injection Moulding, Moldflow, Taguchi, Sink Mark