Transactions of Materials and Heat Treatment

Title：Experimental investigation on steady state contact heat transfer coefficient between C18150 copper alloy and H13 mold steel

Authors： Zhao Jutao1 Zhang Liwen1 Zhang Chi1 Ding Haochen1 Ma Yi1 Yun Xinbing2

Unit： 1. Dalian University of Technology 2. Dalian Jiaotong University

KeyWords： C18150 copper alloy H13 mold steel steady state contact heat transfer coefficient interface average temperature contact load

ClassificationCode：TK124；TG379

year,vol(issue):pagenumber：2024,49(6):255-259

Abstract：

The steady state contact heat transfer coefficient between C18150 copper alloy and H13 mold steel was measured by a set of steady state contact heat transfer coefficient experimental equipment, and the direction of heat flow was controlled from H13 mold steel to C18150 copper alloy under the interface average temperature of 200-600 ℃ and the contact load of 1.56, 6.24, 10.92 and 15.6 MPa, respectively. Then, the influence laws of the interface average temperature, contact load and contact history process on the steady state contact heat transfer coefficient were studied and analyzed, and the steady state contact heat transfer coefficient was affected by the average interface temperature through changing the material properties and the contact surface state. The experimental results show that the steady state contact heat transfer coefficient is the largest when the interface average temperature is 345 ℃ and the contact load is 15.6 MPa. The steady state contact heat transfer coefficient in the loading process is smaller than that in the unloading process during different contact history processes. Thus, the experiment study can further improve the accuracy of the numerical simulation for C18150 copper alloy thermoforming process to further improve the forming quality.

Funds：

国家自然科学基金资助项目（52274375）

作者简介：赵巨涛（1999-），男，硕士研究生，E-mail：17634947456@163.com；通信作者：张立文（1962-），男，博士，教授，E-mail：commat@mail.dlut.edu.cn

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