Experimental Study on Autogenous TIG Welding of Mild Steel Material Using Lathe Machine

Tungsten Inert Gas welding (TIG) is additionally called Gas Tungsten Arc Welding (GTAW), is a kind of advance arc welding process which become a popular choice when a weld of high level quality or considerable precision welding is needed. However, the key issues of TIG welding process are its slow welding speed and restricted to lower thickness material in single pass. In this work, autogenous Tungsten Inert Gas (TIG) welding has been performed with the help of lathe machine on 5 millimeter thick AISI 1020 mild steel plate without using any kind of filler material. Here a wide range of welding current and scan speed has been tested for getting a full penetration type welding. Activated flux has additionally been accustomed to improve the weld depth. After performing the welding by maintaining completely different gap between plates to be welded, tensile strength and weld bead geometry of the weld has been investigated here. It is noted that, with the help of maintaining a suitable gap full penetration welding of the plate can be done which gives strength almost similar to the base material.