1/10/2024 0 Comments Sysweld crack![]() ![]() Singh, Akhilesh Kumar Kumar, Mayank Dey, Vidyut Naresh Rai, RamĪctivated Flux TIG (ATIG) welding is a unique joining process, invented at Paton Institute of electric welding in 1960. ![]() ATIG welding process is also known as flux zoned TIG (FZTIG). In this process, a thin layer of activating flux is applied along the line on the surface of the material where the welding is to be carries out. The ATIG process aids to increase the weld penetration in thick materials. Activating fluxes used in the literature show the use of oxides like TiO2, SiO2, Cr2O3, ZnO, CaO, Fe2O3, and MnO2 during welding of steels. In the present study, ATIG was carried out on P- 91 steel. Though, Tungsten Inert Gas welding gives excellent quality welds, but the penetration obtained in such welding is still demanding. P 91 steel which is ferritic steel is used in high temperature applications. As this steel is, generally, used in thick sections, fabrication of such structures with TIG welding is limited, due to its low depth of penetration. To increase the depth of penetration in P 91while welding with ATIG, the role of various oxides were investigated.
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