Rotary friction welding is widely used as a solid state welding method for joining of similar or dissimilar metals. It is an advanced joining technique that generates frictional heat and material goes under plastic deformation at the welding location, thereby affecting the formation of a joint while the material is in solid state. After heat generation phase an additional forging force is applied which completes coalescence. Since no melting of material occurs during friction welding, but metal gets deform after heat generation at welding zone. The principal advantages of frictional welding, low distortion, absence of melt-related defects and high joint strength. In this paper the study has been carried out by using the friction welding process on all geared lathe machine. The material selected for study and experimentation of RFW is stainless steel SS 304 and specimen dia. ϕ 8 mm and ϕ 10 mm. The various parameters studied for the process is rpm, weld time, temperature, pressure, heat affected zone etc., the 2D modeling and steady state transient thermal analysis has been carried out for the selected specimen. © IEOM Society International.