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        용탕단조에 있어서의 열전달 해석

        유승목,한요섭,이호인,홍준표 ( Seung Mok Yoo,Yo Sub Han,Ho In Lee,Chun Pyo Hong ) 한국주조공학회 1990 한국주조공학회지 Vol.10 No.6

        N/A A basic heat flow model has been developed to estimate the heat transfer coefficient at the casting/mold interface during squeeze casting. Based on the measured temperature profiles in squeeze casting of Al-4.5%Si alloy, heat transfer coefficients which vary with time were calculated by numerical method. The influences of the load and the amount of fraction solid on the heat transfer coefficient have also been studied. Using the calculated heat transfer coefficient two dimensional solidification analysis in the squeeze casting process was carried out by the finite difference method, and the results were in good agreement with the experiments. It may be concluded that heat flow analysis in the squeeze casting process with accurate heat transfer coefficient at the casting /mold interface is important for a proper design of cooling in die and finally for improving productivity and die life as well.

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