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선박엔진용 4행정 일체형 크랭크샤프트 제조공정에 관한 연구
송상민(S. M. Song),송보경(B. K. Song),조원상(W. S. Cho),강호경(H. K. Kang) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
The purpose of this study is to manufacture a solid type-crankshaft for 4-stroke marine engine by a semi-closed die forging method (HJM-forging). In case of the semi-closed die forging for solid type-crankshaft, shape of preform and mould are most important because it can affect final dimensions of product. We obtained best shape of preform an, designed mould sets through FEM simulation. We carried out mock-up experiment to manufacture a solid type-crankshaft. As a result, we confirmed that HIM-forging method can maintain a continuous metal flow to crankshaft.