Investigation of the interfacial heat transfer coefficient of sheet aluminum alloy 5083 in warm stamping process

被引：11
|
作者：
Zhao, Kunmin [1 ,2 ,3 ]
Ren, Daxin [2 ]
Wang, Bin [2 ]
Chang, Ying [2 ]
机构：
[1] Hefei Univ Technol, Inst Ind & Equipment Technol, Hefei 230601, Anhui, Peoples R China
[2] Dalian Univ Technol, Sch Automot Engn, Dalian 116024, Peoples R China
[3] Anhui Prov Key Lab Aerosp Struct Parts Forming Te, Hefei 230601, Anhui, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2019年 / 132卷
基金：
中国国家自然科学基金;
关键词：
Heat transfer; Warm stamping; Aluminum alloy; Beck's method; Heat balance method; TEMPERATURE;
D O I：
10.1016/j.ijheatmasstransfer.2018.11.158
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The interfacial heat transfer coefficient (IHTC) between die and blank is an important boundary condition needed for numerical simulation of warm stamping of sheet aluminum alloys. The heat transfer behaviors of sheet aluminum alloy AA5083 are investigated through cylindrical-die stamping experiments. The methods for calculating IHTC such as the heat balance method and Beck's nonlinear estimation method are introduced. The IHTC during blank transportation and stamping-cooling stages are calculated and the influencing factors are analyzed. Both contact pressure and initial temperature positively influence the IHTC and the relationship can be expressed by a compound power function. Lubricant is found to have heat insulation effect beneficial to stamping and cooling in addition to its main function of lubrication. Finally, the heat transfer behaviors under one side contact the other side free and one side contact the other side insulated situations are investigated. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：293 / 300
页数：8
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