Maine Welding Company

TIG Welding (GTAW)

What is TIG Welding?

Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode are protected from oxidation or other atmospheric contamination by an inert shielding gas (argon or helium). A filler metal is normally used, though some welds, known as autogenous welds, or fusion welds do not require it. When helium is used, this is known as heliarc welding.

One of the greatest advantages of the TIG (Tungsten Inert Gas) welding or Gas Tungsten Arc welding (GTAW) process is that it will weld more kinds of metals and metal alloys than any other arc welding process.

TIG welding can be used to weld most metals, including aluminum, magnesium, copper, brass, bronze, stainless steel, nickel alloys like titanium, and even gold.

Utilizing the TIG Welding process you can also weld dissimilar metals to each other, like copper to brass and stainless steel to mild steel.

  • Tig Welding Stainless Steel

    TIG Welding Stainless Steel Known as 300 series, austenitic stainless steels are the most commonly welded. These chrome nickel steels, in contrast to lower cost stainless have more alloys and are non magnetic (Exception, types 310 330). Austenitic grades of stainless steel typically contain a minimum of 16-26% chromium…

  • TIG Welding Stainless Steel Basics

    TIG Welding Stainless Steel Basics In comparison with the welding of mild steel, for example, the austenitic stainless steels have several characteristics that require some revision of welding procedures that are considered standard for mild steel. The melting point of the austenitic grades stainless steels is lower, so less heat…

  • Tungsten Electrodes

    Tungsten Electrodes Non-consumable tungsten electrodes for GTAW (Gas Tungsten Arc Welding) or TIG (Tungsten Inert Gas) welding, generally are of severaltypes. Tungsten electrodes types and their typical application can be identified by color coded end marks as follows. Pure Tungsten : Green 2% Ceriated : Gray 2% Thoriated : Red…

  • TIG Welding

    TIG Welding Advantages One of the greatest advantages ofthe TIG (Tungsten Inert Gas) welding or Gas Tungsten Arc welding (GTAW) process is that it will weld more kinds of metals and metal alloys than any other arc welding process. TIG welding can be used to weld most metals, including aluminum,…

  • The Art of TIG Welding Stainless Steel

    The Art of TIG Welding Stainless Steel When TIG welding stainless steel there are a few points to keep in mind to achieve a cosmetically appealing and sound weld. Because stainless steel does not adequately dissipate heat, maintaining proper heat input when welding is critical. Too much heat can lead…

  • How to TIG Weld Stainless Steel Effectively : Preventing Carbide Precipitation

    In order to effectively TIG weld stainless steel, it important to consider carbide precipitation. TIG Weld Stainless Steel : Carbide Precipitation What is Carbide Precipitation? Carbide precipitation occurs when the chrome and carbon in 300 series stainless steel is drawn out of the material and reacts to the atmosphere. It…

  • TIG Welding Aluminum with Alternating Current

    TIG Welding Aluminum with Alternating current Characteristics of TIG Welding Aluminum with Alternating Current (AC) Process The welding of aluminum by the gas tungsten-arc welding process using alternating current produces an oxide cleaning action. Argon shielding gas is used. Better results are obtained when welding aluminum with alternating current by using…

  • TIG Welding Aluminum with Square Wave Alternating Current

    TIG welding aluminum with square wave alternating current differs from conventional balanced wave TIG welding in the type of wave form used. With a square wave, the time of current flow in either direction is adjustable from 20 to 1. In square wave gas tungsten arc welding, there are the…

  • TIG Welding Aluminum with Direct Current Straight Polarity (DCSP)

    Characteristic of TIG Welding Aluminum with direct current straight polarity This process, using helium and thoriated tungsten electrodes is advantageous for many automatic welding operations, especially in the welding of heavy sections. Since there is less tendency to heat the electrode, smaller electrodes can be used for a given welding…

  • TIG Welding Equipment

    TIG Welding Equipment. The basic features of TIG welding equipment used in TIG welding are shown in figure 10-33. The major components required for TIG welding are: TIG Welding Equipment : Includes (1) the TIG welding machine, or power source (2) the TIG welding electrode holder and the tungsten electrode…

  • Tungsten Electrode Selection

    Tungsten Electrode Selection The selection and preparation of tungsten electrodes for TIG Welding or Gas Tungsten Arc Welding (GTAW) to use for a particular application depends on many variables, including the type of material to be welded, the welding amperage and the type of weld, among other factors. Tungsten Electrode…

  • Aluminum TIG Welding Rods

    Aluminum TIG Welding Rods 4043 Aluminum TIG welding rods areuncoated aluminum TIG welding rods which are good for general Aluminum TIG welding. 4043 Aluminum TIG welding filler rods can be used to weld the following Aluminum alloys: 1100, 5052, 6061 and 356 aluminum castings.It is most often used to…

  • Lincoln Precision Tig Welder 225

    Lincoln Precision Tig Welder 225 The* Lincoln Precision TIG Welder* 225 gives you the Power to Perform, for general fabrication, automotive/motorsports, vocational schools or serious hobby work. Micro-Start II Technology delivers precision arc performance to improve arc starting, welding and weld cratering. Features like patented Auto-Balance and a built-in simple…

  • TIG Welding Process

    TIG Welding Process, Torch Angle, Tungsten Grinding and Stainless Steel. Things to keep in mind when TIG Welding Position TIG torch about an 1/8 of an inch from the surface. TIG Torch angle Once an arc is established, angle the torch about 15 to 20 degrees away from the direction…

  • TIG Welding 4130 Chromoly Tubing

    TIG Welding 4130 Chromoly Tubing 4130 chromoly steel has an excellent strength to weight ratio, is easily welded and is considerably stronger and harder than standard 1018 steel. The 4130 grade of chromoly or chrome-moly is a high-strength low-alloy (HSLA) steel that contains molybdenum (0.15 0.25 percent by weight)…

  • Miller TIG Welder : Miller Diversion 180 : Ac/Dc Tig Welder

    TIG Welding Aluminum DC Electrode Negative Does your TIG welding machine have enough amperage to weld thick Aluminum? Are you tired of pre-heating only to find that your tungsten cannot withstand the constant AC arc? Direct Current Electrode Negative (DCEN) or DC(-) TIG welding Aluminum. There are no short cuts…

  • Can your welding machine TIG weld Aluminum?

    Can your welding machine TIG weld Aluminum? A considerable number of our clients ask about welding machine requirements in order to TIG weld aluminum. TIG weld Aluminum with Direct Current Electrode Positive (DCEP) or DC(+) Can you TIG weld aluminum without AC and a High Frequency box? Yes, you can…

  • TIG welding versus MIG welding

    TIG welding versus MIG welding machines MIG welding machines can make quick work of those around the house projects. Witha basic configuration you haveyour MIG welding machine set up with gasless filler material commonly known as Flux Core. It welds ok, but you find that if you want clean results…

  • TIG Welding Shielding Gas

    TIG Welding Shielding Gas With the TIG welding process, shielding gases are required to protect the welding area from gases in the atmosphere including oxygen and nitrogen, which can create fusion defects, porosity, and embrittlement in the metal to be welded, if they come in contact with the welding metal,…

  • TIG Welding Aluminum

    TIG Welding Aluminum The TIG (Tungsten Inert Gas) arc welding process is used for welding the thinner sections of aluminum and aluminum alloys. There are several precautions that should be mentioned with respect to using this process. Alternating current is recommended for general-purpose work since it provides the half-cycle of…

  • TIG Welding Process Principles

    TIG Welding Process Principles Before TIG welding begins, all oil, grease, paint, rust, dirt, and other contaminants must be removed from the welded areas. This may be accomplished by mechanical means or by the use of vapor or liquid cleaners. Striking the arc may be done by any of the…

  • TIG Welding Advantages

    TIG Welding Advantages TIG Welding is the most popular method for welding aluminum, stainless steels, and nickel-base alloys. It produces top quality welds in almost all metals and alloys used in the welding industry. The process provides more precise control of the weld than any other arc welding process, because…

  • TIG Welding (GTAW)

    TIG Welding **TIG Welding or Gas tungsten arc welding (GTAW) **is a process in which the joining of metals is produced by heating with an arc between a tungsten (non-consumable) electrode and the work. A shielding gas is used, normally argon. TIG welding is normally done with a pure tungsten…

  • TIG Welding Equipment : Gas Tungsten Arc Welding (GTAW) Equipment

    TIG Welding Equipment : Gas Tungsten Arc Welding (GTAW) Equipment Gas Tungsten Arc Welding. In tungsten inert gas (TIG) welding, (also known as GTAW), an arc is struck between a virtually non-consumable tungsten electrode and the workpiece. The heat of the arc causes the edges of the work to melt…

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