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对建筑施工中钢结构的焊接工艺及其对组织与性能的影响进行了研究,选取施工中常用的405/Q235R复合板为研究对象,采用两种焊接工艺对比分析了不同焊接工艺下焊接接头的拉伸力学性能、硬度分布和显微组织。结果表明,两种焊接工艺,焊接复合板的焊接性能都满足施工过程中的要求;在焊接接头热影响区和过渡层的连接处靠近过渡层区域中的铁素体+马氏体的双相组织,有利于提高焊接接头的综合性能。
The welding technology of steel structure in construction and its influence on the microstructure and properties were studied. The commonly used 405 / Q235R composite plate in construction was selected as the research object. Two kinds of welding processes were used to analyze the welding joint Tensile mechanical properties, hardness distribution and microstructure. The results show that the welding performance of the two welding processes and the welding clad plate all meet the requirements of the construction process. When the junction between the heat affected zone and the transition zone of the welded joint is close to the ferrite + martensite dual phase in the transition zone Organization, help to improve the overall performance of welded joints.