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  2. Gas tungsten arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_tungsten_arc_welding

    GTAW weld area. Manual gas tungsten arc welding is a relatively difficult welding method, due to the coordination required by the welder. Similar to torch welding, GTAW normally requires two hands, since most applications require that the welder manually feed a filler metal into the weld area with one hand while manipulating the welding torch in the other.

  3. Weld purging - Wikipedia

    en.wikipedia.org/wiki/Weld_purging

    Most weld purging is carried out on joints made by the TIG or GTAW arc welding process. [6] When the laser welding process is chosen, joints or welds being made on reactive materials will need to be carried out and in the case of electron beam welding, this is carried out in a vacuum, in which case purging takes place by complete evacuation of all gas.

  4. List of welding codes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_codes

    Gas welding equipment - Small kits for gas brazing and welding ISO 14175: Welding consumables — Gases and gas mixtures for fusion welding and allied processes. Replaced EN 439:1994 in Europe. ISO 14341: Welding consumables. Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain steels. Classification ISO 14554

  5. Arc welding - Wikipedia

    en.wikipedia.org/wiki/Arc_welding

    Gas tungsten arc welding (GTAW), or tungsten/inert-gas (TIG) welding, is a manual welding process that uses a non-consumable electrode made of tungsten, an inert or semi-inert gas mixture, and a separate filler material. Especially useful for welding thin materials, this method is characterized by a stable arc and high quality welds, but it ...

  6. List of welding processes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_processes

    Gas Metal Arc Welding [3] 131 135: GMAW Continuous consumable electrode and shielding gas: Industry Gas Tungsten Arc Welding [4] 141: GTAW Nonconsumable electrode, slow, high quality welds Aerospace, Construction (piping), Tool and Die Plasma Arc Welding: 15: PAW Nonconsumable electrode, constricted arc Tubing, instrumentation Shielded Metal ...

  7. Shielding gas - Wikipedia

    en.wikipedia.org/wiki/Shielding_gas

    Argon is the most common shielding gas, widely used as the base for the more specialized gas mixes. [5] Carbon dioxide is the least expensive shielding gas, providing deep penetration, however it negatively affects the stability of the arc and enhances the molten metal's tendency to create droplets (spatter). [6]

  8. A government shutdown could make Trump transition 'chaotic'

    www.aol.com/government-shutdown-could-trump...

    A K9 officer patrols the front of the Capitol on a day where a potential government shutdown looms during the holidays after a spending bill backed by Donald Trump failed in the U.S. House of ...

  9. Symbols and conventions used in welding documentation

    en.wikipedia.org/wiki/Symbols_and_conventions...

    The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.