0 Anonymous Asked: July 16, 2020In: Business What is difference between saw welding and MIG welding? 0 welding machine welding Share Facebook 1 Answer Voted Oldest Recent Rakesh 10 Questions 51 Answers 0 Best Answers 129 Points View Profile Rakesh Added an answer on July 16, 2020 at 5:28 am SAW is a wire-fed process, like gas metal arc welding (GMAW, or MIG). MIG Wire is fed through a torch that typically moves along the weld joint by mechanization. Understanding and controlling SAW is not significantly different than understanding and controlling GMAW. Setting the machine is similar, and many welding variables remain the same: Voltage still influences bead width, amperage still influences penetration, and increasing wire feed speed still raises amperage and deposition (assuming constant contact-to-work distance and use of a CV power supply). MIG welding uses an electric current. The current is used to create a short circuit between a positively charged solid wire and a negatively charged cathode. The cathode in this scenario is the metal being welded. A non-reactive gas or inert gas is also fed through the welding gun. The gas and the circuit weld the metal and allows them to mix. When the heat is removed, the weld pool cools and solidifies, forming a new piece of fused metal. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerCancel replyYou must login or register to add a new answer.