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  2. Gas metal arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_metal_arc_welding

    These gasless machines operate as DCEN, rather than the DCEP usually used for GMAW solid wire. [57] DCEP, or DC Electrode Positive, makes the welding wire into the positively-charged anode, which is the hotter side of the arc. [58] Provided that it is switchable from DCEN to DCEP, a gas-shielded wire-feed machine may also be used for flux-cored ...

  3. 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]

  4. Arc welding - Wikipedia

    en.wikipedia.org/wiki/Arc_welding

    Welders are also often exposed to dangerous gases and particulate matter. Processes like flux-cored arc welding and shielded metal arc welding produce smoke containing particles of various types of oxides. The size of the particles in question tends to influence the toxicity of the fumes, with smaller particles presenting a greater danger.

  5. Welding - Wikipedia

    en.wikipedia.org/wiki/Welding

    Fumes and gases, such as carbon dioxide, ozone, and fumes containing heavy metals, can be dangerous to welders lacking proper ventilation and training. [68] Exposure to manganese welding fumes, for example, even at low levels (<0.2 mg/m 3), may lead to neurological problems or to damage to the lungs, liver, kidneys, or central nervous system. [69]

  6. Shielding gas - Wikipedia

    en.wikipedia.org/wiki/Shielding_gas

    Shielding gases fall into two categories—inert or semi-inert. Only two of the noble gases, helium and argon, are cost effective enough to be used in welding.These inert gases are used in gas tungsten arc welding, and also in gas metal arc welding for the welding of non-ferrous metals.

  7. Submerged arc welding - Wikipedia

    en.wikipedia.org/wiki/Submerged_arc_welding

    Submerged arc welding. The welding head moves from right to left. The flux powder is supplied by the hopper on the left hand side, then follow three filler wire guns and finally a vacuum cleaner.

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