奥氏体不锈钢TIG焊用活性剂的研制  

Active flux for austenitic stainless steel tungsten inert-gas welding

作　　者：胡礼木[1] 胡波[1] 郭从盛[1] 王永善[1] 

机构地区：[1]陕西理工学院材料科学与工程系,陕西汉中723003

出　　处：《焊接学报》2006年第6期53-55,70,共4页Transactions of The China Welding Institution

基　　金：陕西省教育厅专项科研基金资助项目(02JK132)

摘　　要：应用正交试验法对奥氏体不锈钢TIG焊用活性剂配方进行了试验研究。采用所研制的活性剂,在不开坡口的情况下,当热输入E=1.01kJmm时,可一次焊透5mm厚奥氏体不锈钢板;当E=1.95kJmm时,可一次焊透8mm厚奥氏体不锈钢板,焊接过程中电弧稳定,焊缝成形良好。活性剂对焊接过程中合金元素的烧损有一定的抑制作用,所得焊缝中Cr、Ni元素的含量与母材的相比只略有下降。A-TIG焊缝的显微组织结构与TIG焊缝的相比几乎没有差别,但前者的硬度高于后者。Active flux for austenitic stainless steel TIG(tungsten inert-gas) welding was studied using the orthogonal method. With the resulting flux and heat input of 1.01 kJ/mm ,the austenitic stainless steel of 5 mm thickness was penetrated by TIG welding without beveling.When increasing heat input to 1.95 kJ/mm, the steel of 8mm thickness was penetrated. The arc was steady during welding,and appearance of weld is good. The flux has a function of suppressing alloy elements to escape from weld pool, so that the weight percentages of Cr and Ni in the A-TIG(active-tungsten inert-gas welding) weld metal are descended very slightly. The microstructure of the A-TIG welds is almost the same as that of the TIG welds. The hardness of the former is somewhate higher than that of the later.

关 键 词：活性剂钨极氩弧焊 焊接熔深 活性剂 

分 类 号：TG444[金属学及工艺—焊接]