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Determination of the heat transfer coefficient at the metal–sand mold interface of lost foam casting process

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Abstract

For modeling solidification process of casting accurately, a reliable heat transfer boundary condition data is required. In this paper, an inverse conduction model was established to determine the heat flux and heat transfer coefficient at the metal–sand mold interface for cylindrical casting in the lost foam process. The numerically calculated temperature was compared with analytic solution and simulation solution obtained by commercial software ProCAST to investigate the accuracy of heat conduction model. The instantaneous cast and sand mold temperatures were measured experimentally and these values were used to determine the interfacial heat transfer coefficient (IHTC). The IHTC values during lost foam casting were shown to vary from 20 to 800 W m−2 K−1. Additionally, the characteristics of the time-varying IHTC have also been discussed in this study.

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Acknowledgments

The research supports from Scientific Research Fund of Hunan Provincial Education Department (No. 13B145), Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province and Open Research Fund Program of the State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (No. 31415003) are gratefully acknowledged.

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, People’s Republic of China

    Liqiang Zhang, Wenfang Tan & Hao Hu

  2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, Hunan, People’s Republic of China

    Liqiang Zhang

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  1. Liqiang Zhang
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  2. Wenfang Tan
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Correspondence to Liqiang Zhang.

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Zhang, L., Tan, W. & Hu, H. Determination of the heat transfer coefficient at the metal–sand mold interface of lost foam casting process. Heat Mass Transfer 52, 1131–1138 (2016). https://doi.org/10.1007/s00231-015-1632-1

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  • DOI: https://doi.org/10.1007/s00231-015-1632-1

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