Thermal contact conductance at continuous roll-casting interface

来源期刊：中南大学学报(英文版)2007年第3期

论文作者：胡仕成 马维策 杜磊 李晓谦 钟掘

文章页码：374 - 379

Key words：real contact area; strain rate; pressure; thermal contact conductance

Abstract: The effects of surface roughness, strain rate, friction coefficient and pressure on real contact area were analyzed based on the research of Stupkiewicz. The real contact area model taking account of the effect of friction and deformation of material was obtained. The model of contact conductance at the rolling interface was obtained by integrating the specific feature of heat transfer through the interface of continuous roll-casting. The results indicate that the real contact area increases obviously when the material is under yield, and the real contact area varies inversely with surface roughness, whereas it varies exponentially with friction coefficient, strain rate and pressure, and the power factor depends on strain rate.

基金信息：the National Key Fundamental Research and Development of China