Q235A钢表面TIG堆焊铜合金的组织和性能研究  

Study on Microstructure and Properties of Q235A Steel Surface TIG Surfacing Copper Alloy

作　　者：刘永玲 韩磊 查开旭 毛文涛 丁永金 吴建 舒宝盛 LIU Yongling;HAN Lei;ZHA Kaixu;MAO Wentao;DING Yongjin;WU Jian;SHU Baosheng(Lanzhou Lanshi Group LANTUO Agricultural Equipment Co.,Ltd.,Lanzhou 730314,China)

机构地区：[1]兰州兰石集团兰驼农业装备有限公司,兰州730314

出　　处：《焊管》2022年第7期7-11,共5页Welded Pipe and Tube

摘　　要：为了解决Q235A钢表面耐腐蚀性差和硬度低等问题,采用TIG堆焊方法在Q235A钢板上堆焊铜合金,从30组试验中选取堆焊效果好的3组试样进行组织和性能研究,分析堆焊层组织的宏观和微观形貌,比较堆焊层的硬度和耐蚀性。结果表明:铜合金层和母材界面的成分发生了变化,发现基体元素向铜合金层中熔解产生不同形状的泛铁相,钢板表面硬度明显提高,表面堆焊层的耐腐蚀性比Q235A钢母材的耐腐蚀性有显著提高。In order to solve the problems of poor corrosion resistance and low hardness on the surface of Q235A steel,TIG surfacing method was used to surfacing copper alloy on Q235A steel plate.Three samples with good surfacing effect are selected from 30 groups of tests to study the microstructure and properties.The macro and micro morphology of the microstructure of the surfacing layer are analyzed,and the hardness and corrosion resistance of the surfacing layer are compared.The results show that the composition of the interface between the copper alloy layer and the base metal is changed.It is found that the surface hardness of the steel plate is improved obviously,and the corrosion resistance of the surfacing layer is higher than that of the base metal of Q235A steel.

关 键 词：Q235A钢 TIG堆焊 铜合金 组织性能 

分 类 号：TG457.1[金属学及工艺—焊接]