Transactions of Materials and Heat Treatment

Title：Influence of filling pure aluminum particles on heat transfer property of warm viscous medium

Authors： Gao Tiejun Yao Yongjie Lyu Yangjie Liu Qing Wang Zhongjin

Unit： Shenyang Aerospace University Harbin Institute of Technology

KeyWords： pure aluminum particles viscous medium warm forming settlement velocity thermal conductivity heat transfer process

ClassificationCode：TG306

year,vol(issue):pagenumber：2017,42(7):153-157

Abstract：

According to lower thermal conductivity of viscous medium in the warm forming process, filling high thermal conductivity particles into viscous medium was proposed to enhance the thermal conductivity of viscous medium during the warm forming process. For the pure aluminum particles, the influences of pure aluminum particle size and filling mass fraction on viscous medium heat transfer process was determined by the settlement experiment of pure aluminum particles, the measurement experiment of thermal conductivity for viscous medium with different filling parameters and the finite element analysis of heat transfer process. The results show that the settlement velocity of pure aluminum particles in viscous medium increases with the increasing of temperature and pure aluminum particles size, for the reason that the density of pure aluminum particles is greater than the density of viscous medium. At the same time, the thermal conductivity of viscous medium increases with the increasing of pure aluminum particles size and filling mass fraction, which is beneficial to the heat transfer from external to internal of viscous medium. At the certain temperature, the filling of pure aluminum particles can remarkably enhance the thermal conductivity of viscous medium at a proper size and filling mass fraction.

Funds：

辽宁省自然科学基金资助项目(2013024014)；辽宁省高等学校优秀人才支持计划(LJQ2015083)

作者简介：高铁军(1977-)，男，博士，副教授，E-mail：gtj2572@sina.com

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