This current type provides better base metal penetration. The parameters for Tig welding are dependent upon plate thickness and welding position.įCAW - Flux cored stainless steel welding wire generally uses direct current, reverse polarity (electrode positive). GTAW - For Gas Tungsten Arc Welding use DC current with straight polarity (electrode negative). They produce a smooth weld bead, with a flat to slightly convex bead appearance.Ĭurrent Amperage most common settings are: It also works well on thick metal with a large diameter electrode. The advantages of this current include: less chance of arc blow, which is an unbalance of the magnetic field around the arc causing a bend in the arc. Bead appearance is convex.ĪC uses a combination of both straight and reverse polarities, which alternate in regular cycles. Their key characteristic is fast freezing slag, which make them suitable for out of position welding. Stainless electrodes designated D15, (ex: 308-15) use direct current, reverse polarity. In addition, igniting the arc and maintaining a short arc is easier. It works well at low current settings and with small diameters. Direct current flows in one direction continuously through the welding circuit. SMAW - uses a direct current (DC) or an alternating current (AC).ĭC uses either straight polarity, which is electrode negative or reverse polarity, which is electrode positive. These droplets are projected down to the base metal. Spray Transfer - Metal is transferred across the arc creating a continuous spray of fine droplets of metal.It is used on smaller, thinner gauges and produces a shallow weld. Short Circuit Transfer - The arc is broken or short-circuited with each drop of metal and restarted.Shielding is obtained from an externally supplied gas or gas mixture. GMAW is an electric arc welding process where heat is produced by an arc between a continuously fed filler metal electrode and the base metal. It generally calls for little post weld cleanup. Gas metal arc welding is quick and easy on thin-gauge metal as well as heavy plate. GMAW - Gas Metal Arc Welding or Mig Welding.Aufhauser flux cored stainless steel wire is formulated to provide all position welding and smooth, stable arc action. A smoke suction nozzle around the gun or fume hood aids in reduction of smoke and fumes. It provides shielding, deoxidization and arc stabilization. (Inert gas creates a protective atmosphere around the welding in process.)įlux is contained within the electrode. An inert shielding gas supplies shielding for the arc. It is an electric welding process in which heat for welding is generated by an electric arc between the end of a non-consumable tungsten electrode and the base metal. It generally requires little or no post weld finishing. Tig Welding is easily performed on a variety of metals. GTAW - Gas Tungsten Arc Welding or Tig Welding. However, electrodes do create some inefficiency, such as stub loss and a slag coating, which must be removed. The welding equipment for this process is currently the most inexpensive of the methods described here. The electrode coating provides shielding. SMAW is an electric arc welding process in which heat for welding is generated by an electric arc between a covered metal electrode and the base metal. SMAW - Shielded Metal Arc Welding or Stick Electrode.The three most common stainless welding processes are:
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