电焊机2025，Vol.55Issue(4)：100-106,133,8.DOI:10.7512/j.issn.1001-2303.2025.04.13
铜/铝异种金属管接头的高频感应钎焊工艺及性能提升
High-frequency Induction Brazing Process and Performance Improve-ment of Copper/Aluminum Dissimilar Metal Pipe Joints
摘要
Abstract
A high-frequency induction brazing process for copper and aluminum dissimilar metal pipe joints was developed,focusing on the effects of different heating positions and process parameters on the appearance and penetration depth of the weld seam.Firstly,by comparing the welding effects of two commonly used brazing alloys(BAl67CuSi and BZn78Al22),it was found that the BZn78Al22 brazing alloy,due to its lower melting point and better wettability,is more suitable for induc-tion brazing of copper/aluminum dissimilar metals.Secondly,the influence of different heating positions on the wettability of the brazing alloy and the formation of the weld seam was analyzed,and the optimal heating position was determined:dur-ing the first stage of heating,the height difference between the bottom of the coil and the top of the aluminum pipe is 4～5 mm;during the second stage of heating,the end face of the coil is 1 mm lower than the end face of the pipe seat.In addition,by adjusting the induction heating power and time,segmented heating control was achieved,effectively avoiding parent ma-terial melting and improving weld penetration depth.Finally,the copper/aluminum dissimilar metal induction brazed joint obtained using the selected brazing alloy and process parameters has a weld penetration depth exceeding 95%,good com-pactness,and a pressure-bearing capacity of 13.81 MPa,meeting the design requirements.This study provides a theoretical basis and technical support for high-quality connections of copper and aluminum dissimilar metal pipe joints.关键词
铜/铝异种金属/感应钎焊/锌铝钎料/加热位置/工艺参数/熔深Key words
Copper/Aluminum dissimilar metals/induction brazing/Zinc-Aluminum brazing filler/heating position/process parameters/melting depth分类
金属材料引用本文复制引用
罗寿根,黄魏青,刘金湘,车兴涛,黄世盛,余丁坤,乔雪..铜/铝异种金属管接头的高频感应钎焊工艺及性能提升[J].电焊机,2025,55(4):100-106,133,8.基金项目
浙江省"尖兵领雁+X"研发攻关计划(2024C01086) （2024C01086）
