低碳钢管子全位置A-TIG焊接法  

A-TIG welding in all-position welding for mild steel pipe

作　　者：张瑞华[1] 王海涛[1] 王荣[2] 潘乾刚 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]苏州工业园区华焊科技有限公司,江苏苏州215021 [3]东方锅炉集团股份有限公司,四川自贡643001

出　　处：《焊接学报》2010年第6期13-16,共4页Transactions of The China Welding Institution

基　　金：广东省教育部产学研资助项目(2009B090300250);兰州理工大学博士基金资助项目

摘　　要：A-TIG焊是一种新型高效的焊接法,具有熔深深,热影响区小、焊缝窄、变形量小、效率高等特点.对低碳钢管子全位置A-TIG焊接法进行了研究.在分析了涂覆活性剂后管子全位置焊接过程中熔池的受力状态的基础上,制定了相关焊接工艺.对6mm厚的低碳钢管子焊接时不开坡口,将活性剂刷涂于待焊焊道表面,使用管道全位置焊机进行焊接,可以一次焊透,并能单面焊双面成形.突破了管道全位置焊机只能焊接薄壁管的局限性,使得管道全位置焊机的使用范围进一步扩大,焊接效率大幅度提升.A-TIG welding is a novel and efficient method of welding. It is characterised with higher penetration than ordinary TIG welding,less heat-affected zone,narrow weld,and less amount of deformation. Besides,it has a high welding efficiency and so on. The application of A-TIG welding in all-position welding for the mild steel pipe was studied. After the activating fluxes was deposed on the metal surface by a brusher before welding,the forced state of the weld pool at different area of the pipe was analyzed during the weld process,and the regulation of welding with activating fluxes for tube was provided. All-position welding machine was used in pipe welding. The full penetration can be got in a single pass without groove preparation for the mild steel pipes of 6 mm thickness,compared with 2 mm in conventional TIG welding process. By this process,the application range of the all-position welding machine can be extended. The efficiency of pipe welding has been improved.

关 键 词：活性焊 低碳钢管 全位置焊接 

分 类 号：TG401[金属学及工艺—焊接]