Application of Active Flux TIG welding

TIG welding has been widely used in welding of special materials such as stainless steels, Ni alloys, etc., however, it has relatively low efficiency in welding work. Since coating of activating flux on materials to be welded increases penetration depth and operation is very simple without necessitating any new facilities, TIG welding using activated flux is attracting attention to raise welding efficiency. A paper introduces features and properties of TIG joints in case of using activated flux. Examples of welding are illustrated in case of reverse side welding of SUS304 stainless steel plates with thickness of 6mm(I groove) and 12mm(U and V grooves). A paper is one of a series of lectures named "lectures for practical use".