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  2. Gas tungsten arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_tungsten_arc_welding

    Gas tungsten arc welding (GTAW, also known as tungsten inert gas welding or TIG, and heliarc welding when helium is used) 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 ...

  3. Arc welding - Wikipedia

    en.wikipedia.org/wiki/Arc_welding

    Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. The welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.

  4. Welding power supply - Wikipedia

    en.wikipedia.org/wiki/Welding_power_supply

    Welding power supplies primarily serve as devices that allow a welder to exercise control over whether current is alternating current (AC) or direct current (DC), as well as the amount of current and voltage. Power supplies for welding processes that use shielding gas also offer connections for gas and methods to control gas flow.

  5. Welding - Wikipedia

    en.wikipedia.org/wiki/Welding

    They can use either direct current (DC) or alternating current (AC), and consumable or non-consumable electrodes. The welding region is sometimes protected by some type of inert or semi- inert gas , known as a shielding gas, and filler material is sometimes used as well.

  6. Submerged arc welding - Wikipedia

    en.wikipedia.org/wiki/Submerged_arc_welding

    DC or AC power can be used, and combinations of DC and AC are common on multiple electrode systems. Constant voltage welding power supplies are most commonly used; however, constant current systems in combination with a voltage sensing wire-feeder are available.

  7. List of welding processes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_processes

    This is a list of welding processes, separated into their respective categories.The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063). [1]

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