浮车槽型轨60R2铝热剂焊工艺设计和性能研究.pdf

浮车槽型轨 60R2 铝热剂焊工艺设计和性能研究 摘 要 铁路运输一直都具备着巨大的重要性和优势，不管是运力还是经济方面。 对幅员辽阔的中国来讲，能在短短几十年有如此发展，铁路的贡献是巨大的。 因此对铝热焊在浮车槽型轨上的应用进行研究，而目前在铁路焊接中，越来越 多地采用铝热焊技术，通过梳理和分析国内跟钢轨铝热焊和槽型轨方面相关的 文献，了解和学习其历史和工艺。 本论文的主要工作，首先是在理论方面对有轨电车的发展和钢轨选型进行 了解，对钢轨焊接的原理进行分析，了解符合要求的试验要求规范；二通过实 验进行分析，综合比较铝热焊焊接接头和闪光焊焊接接头的金相组织和硬度曲 线等数据，进行疲劳、拉伸等试验，对其性能进行研究；三是通过比较铝热焊 和闪光焊的接头性能，进行设计和改善铝热焊的工艺。 本次试验的结果显示，试件的硬度曲线存在着不均匀性，金相组织能与硬 度曲线对应上，疲劳、拉伸、静弯等试验的结果显示，铝热焊的试验性能均能 满足焊接工艺评定的要求。静弯试样未见裂纹，试样的抗拉强度均在材料的标 准范围之内，疲劳性能符合标准等。 关键词：铝热焊、闪光焊、钢轨、槽型轨、工艺和性能 Abstract Railway transportation has always had great importance and advantages, whether it is transport capacity or economic aspects. For China with a vast territory, it can be developed in just a few decades. The contribution of the railway is huge. Therefore, the application of aluminum heat welding on the float rail track is studied. At present, in the railway welding, aluminum heat welding technology is more and more used to comb and analyze the domestic aluminum heat welding and groove track in the rail. Relevant literature to understand and learn about its history and craftsmanship. The main work of this dissertation is firstly to understand the development of trams and the selection of rails in theory, to analyze the principle of rail welding and to understand the test requirements that meet the requirements. Second, to analyze and compare the aluminum heat through experiments. Welded joints and flash welded joints of the metallographic structure and hardness curve data, fatigue, tensile tests, and their performance; Third, by comparing the aluminum heat welding and flash joint performance, design and improvement Aluminum heat welding process.