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사출성형해석을 이용한 ASTM 굴곡시편의 사출조건 결정방법 연구
김봉래(Bong Lae Kim),이수현(Soo Hyun Lee),권혁홍(Hyuk Hong Kwon) 한국생산제조학회 2021 한국생산제조학회지 Vol.30 No.3
An essential condition for minimizing the cost of quality loss by mass-producing high-quality injection molded products in a short period is the optimization of the injection process condition. As an ASTM D790 flexural strength specimen of PA46 TW341 raw material, molding analysis was performed using the Taguchi method and Minitab to determine the injection weight, which is a factor for optimal quality condition. In addition, the quality of the flexural strength of the specimen was verified by injection molding into the specimen mold and conducting a flexural strength test. The optimum conditions, such as injection time, injection pressure, holding pressure, and holding pressure time, which are key factors of injection molding, were predicted and verified. Good quality was confirmed by evaluating the flexural strength of the injection-molded specimen.