Simulation of filler metal's flow and shaping during Aluminum brazing process of heat exchanger cruciform joint

被引：0
作者：
Luo C. [1 ]
Zhang Z. [1 ]
Shan J. [1 ,2 ]
机构：
[1] Department of Mechanical Engineering, Tsinghua University, Beijing
[2] Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing
来源：
Shan, Jiguo (shanjg@tsinghua.edu.cn) | 2018年 / Harbin Research Institute of Welding卷 / 39期
关键词：
Aluminum brazing sheet; Brazing temperature; Joint gap; Shaping of joint; Simulation;
D O I：
10.12073/j.hjxb.2018390181
中图分类号：
学科分类号：
摘要：
In order to increase efficiency and improve quality of heat exchanger in air condition further, simulations of Aluminum brazing sheet cruciform joint based on VOF 3D model were carried out to research the wetting process of filler metal under different brazing temperature and joint gap. Meanwhile, experiments were conducted. The results show that the model can simulate the flow and shaping of joint approximately and predict the influence rules of temperature on wetting length, which validates this model. Brazing temperature affects the shaping of joint considerably. Compared to 600℃, 590℃ and 610℃ both led to the decrease of wetting length due to insufficient wettability and running off increasingly of filler metal, respectively. Too little gap generated aggregation of filler metal at bottom of joint and too large gap weakened capillary action, both of which went against the wetting of filler metal. So symmetrical gap for the joint is best. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：88 / 92
页数：4
相关论文
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