热锻温度场接触换热系数测试方法
发布时间：2018-11-17 14:48
【摘要】：基于能量守恒定律,提出一种高温、塑性变形条件下固体接触换热系数的测试方法。以此为基础,开发试制了一套不同接触条件下的固体接触换热系数的测试系统。设计了合理的实验方案,并利用该测试系统测试了H13钢与SA508-3钢在不同初始界面温差、接触载荷下的接触换热系数。研究实测结果发现,在高温下(900℃以上),接触换热系数随着接触载荷增大而增大,且呈现较好的幂律关系;初始界面温度对接触换热系数影响较小;初始界面温差对幂指数的影响较小。实测温度数据与数值模拟数据相吻合,表明该测试系统具有较好的精度与可靠性,具有工业实用价值。
[Abstract]:Based on the law of conservation of energy, a method for measuring the contact heat transfer coefficient of solids under high temperature and plastic deformation is presented. Based on this, a testing system of solid contact heat transfer coefficient under different contact conditions is developed. A reasonable experimental scheme was designed, and the contact heat transfer coefficient of H13 steel and SA508-3 steel under different initial interface temperature difference and contact load was measured by using the test system. The experimental results show that the contact heat transfer coefficient increases with the increase of contact load at high temperature (above 900 鈩，
本文编号：2338167
[Abstract]:Based on the law of conservation of energy, a method for measuring the contact heat transfer coefficient of solids under high temperature and plastic deformation is presented. Based on this, a testing system of solid contact heat transfer coefficient under different contact conditions is developed. A reasonable experimental scheme was designed, and the contact heat transfer coefficient of H13 steel and SA508-3 steel under different initial interface temperature difference and contact load was measured by using the test system. The experimental results show that the contact heat transfer coefficient increases with the increase of contact load at high temperature (above 900 鈩，
本文编号：2338167
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