| 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=1.01 kJmm时,可一次焊透5mm厚奥氏体不锈钢板;当E=1.95 kJmm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。 |
| 关键词: 活性剂钨极氩弧焊 焊接熔深 活性剂 |
| DOI： |
| 分类号: |
| 基金项目:陕西省教育厅专项科研基金资助项目(02JK132) |
|
| Active flux for austenitic stainless steel tungsten inert-gas welding |
|
HU Li-mu, HU Bo, GUO Cong-sheng, WANG Yong-shan, YANG Qi
|
|
Shanxi University of Science and Technology, Hanzhong 723003, Shanxi, China
|
| Abstract: |
| 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. |
| Key words: active-tungsten inert-gas welding penetration active flux |
