Effects of fluxes with single component on weld depth in A-TIG welding of magnesium alloy
(1.黑龙江省哈尔滨市哈尔滨工业大学现代焊接生产技术国家重点实验室2.State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China3.School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China4.Harbin Welding Institute, Academy of Machinery Science, Harbin 150080, China)
Abstract: The effects of fluxes with single component on weld penetration depth in TIG welding of magnesium alloy were investigated. Seven kinds of halides were selected as the activating flux in the experiments. The effects of coating quantity of these fluxes on weld depth-to-width ratio were also studied. The results show that all of the selected halides can increase the weld depth under the same welding conditions compared with conventional TIG welding. The increase of penetration is different for the fluxes with different component. Among them, the flux of CdCl2 is the best, which can increase up to 334% of weld depth compared with the conventional TIG welding.
Key words: magnesium alloy； TIG welding； weld penetration depth； activating flux