Effect of Compound Fluxes on A-TIG Welding Joint Depth of Cu-Cr-Zr Alloy

Abstract:

A-TIG welding for Cu-Cr-Zr copper alloy was carried out on the eleven pure surface activating fluxes including oxides, fluorides and chlorides on the welding formation and the weld D/W ratio by the means of super depth of field and metallurgical microscope. It was found that the oxides and fluorides could improve welding penetration remarkably, especially with CaF₂,ZnF₂,SiO₂ andCr₂O₃. Four compound fluxes were chosen from the eleven pure surface activating fluxes, which could increase the penetration and modify the welding shape. An optimized formula composed of the four compounds (CaF₂,ZnF₂,SiO₂ and Cr₂O₃) was developed by using the formula of uniform design method. It showed that the optimized formula could reach a good weld ability and its weld penetration was 2.5 times more than that of TIG.

• Periodical: Materials Science Forum (Volume 749)
• Pages: 133-140
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.749.133
• Online since: March 2013
• Authors: Wen Hong Jiang, Ran Dong Yu, Sheng Lu
• Keywords: A-TIG Welding, Cu-Cr-Zr Copper Alloy, Flux, Formula of Uniform Designs

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