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등방압 적용 Conformal Cooling Channel Core 금형기술에 대한 기초 연구
이성희(S.H. Lee),차백순(B.S. Cha),윤길상(G.S. Yoon),고영배(Y.B. Ko),박훈재(H.J. Park),최태훈(T.H. Choi),이근안(G.A. Lee) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
A basic research on isostatic technology for advancing the material property of direct metal tool ing core was performed in this study. The advantages of direct metal tool ing core are well known for the reduction of cycle time and the acquirement of high quality product in injection mold process. However there are some problems in density of structure, such as micro scale void. Therefore this research focused on the feasibility study for the application of isostatic process on mold making aspect. Direct tooled tensile specimen and inject ion mold core were prepared to invest i gat e the effect of isostatic process on dimensional change, hardness variation and tooling characteristics. It was shown that dimensional variation ratio was smaller than hardness variation ratio and there was no significant difference in machining result.