Welding is a process where two materials are fused together through heating, intermixing, and then cooling the materials and/or a filler to form a strong join. Robot welding is the use of mechanized programmable tools, which automates a welding process by both performing the weld and handling the part. Robot welding is a relatively new application of robotics. Robot arc welding has been growing quickly and already commands about 20% of industrial robot applications. The robot may weld a pre-programmed position, be guided by machine vision, or by a combination of the two methods