【摘要】 高速列车车体焊接接头的结构完整性决定了列车运行的安全性和可靠性。当前，我国高速列车车体材料由合金钢逐步发展为铝合金，列车车体材料的演变，对焊接技术提出了更高的要求。文章针对在高速列车铝合金车体制造中应用的熔化焊、钎焊、固相焊和复合焊等焊接技术进行了阐述，分析了上述焊接技术的应用范围和优缺点，提出了高速列车车体焊接工艺中存在的问题及尚待深入研究的方向，以期为改善高速列车车体焊接接头的质量，提高列车运行的安全水平提供理论支撑与技术支持。更多还原

【Abstract】 The structural integrity of welded joints on car bodies of high speed trains determines the safety and reliability of train operation. At present, the materials for car bodies of high speed trains have been gradually changed from alloy steel to aluminum alloy. The evolution of materials for car body has brought up higher demands for welding techniques. This paper elaborates the welding techniques, including fusion welding, brazing, solid-phase welding, hybrid welding, etc., applied in the manufacture of aluminum car bodies for high speed trains, analyzes the applied range, merits and demerits of the above-mentioned welding techniques, and presents problems in welding procedures for car bodies and the direction of further study, hoping to provide theoretical and technical support to the improvement of welding joint quality of car bodies for high speed trains and train operation safety.更多还原