6mm铝合金母线壳体焊缝超声波检测研究  

Study on Ultrasonic Butt Weld Detection of 6 mm Aluminum Alloy Bus Shell

作　　者：孙庆峰 孙子安 罗宏建 金江舟 徐强 张小菊 SUN Qingfeng;SUN Zian;LUO Hongjian;JIN Jiangzhou;XU Qiang;ZHANG Xiaoju(Zhejiang Electric Power Boiler&Pressure Vessel Supervision and Inspection Institute Co.,Ltd.,Hangzhou 310014,China;E.Energy Technology Co.,Ltd.,Hangzhou 310012,China;Tonglu Power Development Co.,Ltd.,Hangzhou 311500,China;State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China)

机构地区：[1]浙江省电力锅炉压力容器检验所有限公司,杭州310014 [2]杭州意能电力技术有限公司,杭州310012 [3]桐庐电力开发有限公司,杭州311500 [4]国网浙江省电力有限公司电力科学研究院,杭州310014

出　　处：《浙江电力》2020年第1期83-87,共5页Zhejiang Electric Power

基　　金：国网浙江省电力有限公司科技项目（5211DS70014）

摘　　要：现行的超声波检测标准仅明确了8 mm及以上厚度铝合金对接焊缝验收规范,而GIS(气体绝缘全封闭组合电器)设备母线壳体一般采用厚度为6 mm的铝镁合金制备,其内部充有一定压力的SF6绝缘气体,如果焊接过程中接头部位焊接不良,则易发生SF6气体泄漏事故,影响设备的正常运行。针对该问题,通过对6 mm铝合金GIS设备母线壳体对接焊缝焊接工艺及焊接缺陷成因的分析,制订了合理的超声波检测工艺,并对该工艺进行了验证。结果表明,该工艺是合理有效的。The current ultrasonic testing standard only clarifies the acceptance code for butt weld of aluminium alloy with a thickness of 8 mm and above.However,the GIS bus shell is generally made of 6 mm aluminum-magnesium alloy with the insulation gas of SF6 in it.Poor welding of the joints may lead to SF6 leakage and thus affect the normal operation of equipment.Therefore,the paper analyzes welding technology and welding defects of 6 mm aluminium alloy GIS bus shell to formulate a reasonable ultrasonic testing process and verify it.The results show that the process is reasonable and effective.

关 键 词：GIS壳体 6 mm铝合金 对接焊缝 超声波检测 

分 类 号：TG441.7[金属学及工艺—焊接]