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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. Tungsten - Wikipedia

   en.wikipedia.org/wiki/Tungsten

   Its high melting point also makes tungsten suitable for aerospace and high-temperature uses such as electrical, heating, and welding applications, notably in the gas tungsten arc welding process (also called tungsten inert gas (TIG) welding). [108] Tungsten electrode used in a gas tungsten arc welding torch Tungsten filament is used in ...

4. List of reagent testing color charts - Wikipedia

   en.wikipedia.org/wiki/List_of_reagent_testing...

   It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

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 codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Covered electrodes for manual metal arc welding of non-alloy and fine grain steels. Classification ISO 3580: Covered electrodes for manual arc welding of creep-resisting steels - Code of symbols for identification ISO 3581: Covered electrodes for manual arc welding of stainless and other similar high alloy steels - Code of symbols for ...

7. Shielding gas - Wikipedia

   en.wikipedia.org/wiki/Shielding_gas

   Other arc welding processes use alternative methods of protecting the weld from the atmosphere as well – shielded metal arc welding, for example, uses an electrode covered in a flux that produces carbon dioxide when consumed, a semi-inert gas that is an acceptable shielding gas for welding steel.