TIG-Flux 銲接製程參數研究

The effects of the process parameters of TIG-Flux welding on the weld morphology, retained-ferrite content and welding distortion in austenitic stainless steel were investigated. A novel variant of the autogenous TIG welding, activating fluxes of oxide, was applied on austenitic stainless steel 304 to produce a bead-on-plate weld. The experimental results indicated that the TIG welding with the oxide fluxes can give full weld penetration and lower welding distortion in austenitic stainless steel. The welding current was maintained at a constant value, and it was found that the arc voltage increases as the activating fluxes used in the conventional TIG welding technique. It can also be seen that the more retained-ferrite content in austenitic stainless steel weld metals can be obtained by using a TIG welding with the oxide fluxes.