多元平行流式冷凝器炉中钎焊工艺研究
Study on Brazing Process for Condenser in Controlled Atmosphere Brazing Furnace
郭 艳， 凌泽民， 李金阁
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作者单位：重庆大学 材料科学与工程学院， 重庆 400044
中文关键字：冷凝器； 炉中钎焊； 温度场模拟； 工艺参数
英文关键字：condenser; controlled atmosphere brazing; temperature fields; process parameters
中文摘要：采用ANSYS软件，通过对温度场的模拟，确定了较佳的工艺参数，并进行了工艺实验、温度检测及相关性能测试。温度检测结果表明，模拟曲线与实测曲线吻合较好，说明模拟的温度场是正确的。通过对钎焊接头显微组织分析表明，接头无缺陷，组织致密，显微组织主要以α(Al)+Al-Si共晶组织为主；相关性能测试表明，接头无微漏，达到了使用要求。说明采用有限元软件进行工艺指导是可行的。
英文摘要：The optimum technological parameters of brazing condenser in controlled atmosphere brazing(CAB) furnace were obtained by simulating 3-D temperature distribution of micro-joint between fin and flat tube of the condenser using ANSYS software. The process experiment, temperature measurement and properties testing were carried out. The results show that the real thermal cycle curve fits well with the initial simulation one. The morphology of the welded joint has no defects and the microstructure is dense and mainly α(Al)+Al-Si. The leaking has no slightly leaking. It can be obtained that it is a meaningful method to put FEM employ into the process design.