As a result, a controlled puddle of liquid metal is formed, which is then utilized to link metals together.īoth MIG and TIG welding may utilize a filler material in order to build up the weld bead. That is, the formation of an electrical arc that generates a great deal of heat. The foundations of MIG and TIG welding are the same as in conventional welding. Similarly, with TIG welding, the electrical current passes through the tungsten electrode and arcs from the electrode to the workpiece. With MIG welding, the current passes through the welding wire and arcs between the wire and the workpiece. TIG can use AC current in order to achieve an optimal weld puddle in aluminum. The electrical current used for both MIG and TIG welding can both be DC current, electrode negative. A few of the main similarities are welding current, welding material deposition, heat-affected zone, and applications. There are many similarities between the MIG and TIG welding processes. The operator’s foot, both hands, and eyes must be in perfect sync for this technique to work. Fusion TIG welding, on the other hand, does not require any filler and is simply a method of waving the torch back and forth over the workpieces to be welded.įiller rod welding requires pulsing the foot pedal while dipping the filler rod into the weld puddle with one hand while holding the flame with the other. You can weld with or without out a consumable filler rod which is manually dipped into the weld puddle.īecause the procedure is manually regulated, skill and technique are essential for a visually acceptable TIG weld bead. This will keep the arc constantly forming the weld puddle. You need to hold the tungsten electrode about an eighth of an inch away from the workpiece. The tungsten electrode is held in a collet inside of the welding torch.
TIG welding is a type of welding process in which the welding arc occurs between a tungsten electrode and the workpiece. What is TIG Welding? AKA Gas Tungsten Arc Welding (GTAW) The most common shielding gas for MIG welding are argon and carbon dioxide. NOTE: Use a shielding gas in order to achieve a clean weld. The consumable wire is fed into the weld pool and can build up the weld to the required specification based on the machine setting and the user’s technique. The welding arc melts the consumable wire, which is continually fed through the handle controled with a trigger. Mig Welding is A type of welding process in which the welding arc occurs between a consumable wire and the workpiece.