应急维修中的无电焊接接头微观组织研究
Microstructure of Non-electric Welded Joint in Emergency Maintenance
刘吉延， 马世宁， 孙晓峰， 李 新
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作者单位：（装甲兵工程学院 再制造工程系，北京 100072）
中文关键字：应急抢修； 无电焊接； 冶金结合
英文关键字： emergency maintenance; non-electric welding; metallurgic connection
中文摘要：无电焊接技术是利用材料化学燃烧反应的放热来实现金属连接的方法，无需任何电源和气源，是应急维修的有效技术手段。以45钢为焊接母材进行焊接实验，测试结果表明：无电焊接是一种熔焊焊接，焊缝金属与受焊母材之间呈冶金结合，焊接接头拉伸强度达280 MPa以上。应用证明，无电焊接技术焊接工艺简单，焊缝组织及接头力学性能较好，应用广泛，具有良好的推广应用前景。
英文摘要：Non-electric welding is a novel efficient technique for emergency maintenance, in which the heat released by combustion reaction is used to join metal without any power supply or gas source. Welding experiments were performed on 45 steel as weld object. The results show that the weld metal joints the welded object in metallurgic connection with the tensile strength above 280 MPa, which prove that non-electric welding is a fusion welding technique. The welding technology has advantages of simple operation and good mechanical performance, has promising application prospect.