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논문 기본 정보

자료유형
학술저널
저자정보
Cho, Jung Hwan (Samyang Central R & D Center) Kwon, Soon Yong (Samyang Central R & D Center) Roh, Hyung Jin (Samyang Central R & D Center) Cho, Sung Hwan (Samyang Central R & D Center) Kim, Su Yeon (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) Lyu, Min-Young (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
저널정보
한국고무학회 Elastomers and composites 엘라스토머 및 콤포지트 제52권 제4호
발행연도
2017.1
수록면
309 - 316 (8page)

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In injection molding, the quality of an injection molded product varies greatly depending on the molding conditions. Many researche studies have been conducted on the quality analysis of molded parts according to the molding conditions such as injection pressure, injection temperature, and packing pressure. However, there have not been many studies on the V/P switchover timing. It is known that when a large pressure is applied to a cavity in the packing phase, the cavity pressure is most affected by the packing pressure. In addition, depending on the position (timing) of the packing pressure, it can have a direct influence on quality based on the shrinkage and dimensions of the molded parts. In this study, the change in pressure profile in the cavity according to the V/P switchover position is confirmed. A CAE analysis program (Moldflow) was used to simulate and analyze two models using the PC and PBT materials. In order to compare these results with the actual injection molding results, injection molding was performed for each V/P switchover position, and the correlation between simulation and experiment, especially for the shrinkage of molded parts, was evaluated.

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