Tungsten Inert Gas welding

TIG Welding: Everything You Need To Know

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Welding is a technique that allows a practitioner to join specific materials. The use of heat melts the material and cause fusion. Through the years, welders develop new methods to fabricate specific forms of metals. An example of such approach is the Tungsten Inert Gas welding (TIG) or Gas-Tungsten Arc Welding (GTAW). Here are things you need to know about TIG welding.

Welding Principle

The principle surrounding the TIG or GTAW focuses on the use of heat. The fusion of metals occurs through the use of an electric arc where the workpiece and tungsten electrode come in contact. The temperature necessary to melt and fabricate metals reach 2500 °C. The presence of inert gas in the machinery protect the molten metal and prevents contamination. Specific tig welding services apply different modes depending on the type of equipment and application. Examples of these include manual, semi-automatic, and automatic.

Relevant Applications

TIG welding is a technique that applies to various types of metals for fabrication work. The approach remains effective and cost-effective in piecing together metals with lightweight components. More importantly, TIG supports welding of challenging materials. Among the potential metal combinations that TIG can handle include carbon and alloy steels, reactive materials, magnesium and magnesium alloys, copper and copper alloys, and aluminum and aluminum alloys.

Tools and Equipment

The tools and equipment of TIG welding services also vary. Among the areas you need to examine are shape, capacity, and amperages. There are two classifications of a TIG or GTAW torch: gas cooled and water cooled. Gas cooled welding torches focus on fabricating thin metals while water-cooled welding torches deal with medium and thick materials. Also relevant is the welder’s ability to change the tungsten electrode according to welding specifications.

Polarity Options

TIG welding also considers polarity in selecting equipment. Depending on the current, welders can identify the quality of the weld, speed, and depth of penetration. A TIG or GTAW equipment can support direct and alternating current. Its value comes from usage and type of metal fabrication. For instance, you need to use alternating current for welding magnesium and aluminum.

Advantages and Limitations

The use of TIG welding technique carries advantages and specific limitations. One of the benefits comes from the ability to create high-quality material with low distortion. Another advantage is a welder’s ability to use different power supplies and the potential to fabricate dissimilar metals. Since a TIG tool has a particular tool classification, welders have the chance to control the heat.

There are also limitations in the use of TIG welding. For instance, the technique requires welders to have significant dexterity to perform the task. Contamination is also a limitation, as there is a need to shield and maintain the weld zone properly. If welders are using a water-cooled welding torch, there is the possibility of coolant leakage contamination in the metal.

The Bottom Line

TIG welding is a technique that welders can apply in fabricating different forms of metal. The points above detail relevant information, identify usage and feature advantages and limitations. Altogether, these should provide a significant appreciation of the method and the necessary equipment to perform the welding tasks.

KLK Welding offers a complete range of services including mig welding, arc welding, and tig welding services. Contact us today for more information!