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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. 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.

4. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   Welders are 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. 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.

6. 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.

7. Ariana Grande addresses 'horrible' comments about health and body

   www.aol.com/entertainment/ariana-grande...

   Ariana Grande has been the subject of speculation about her body for months, and she's once again addressing critics, calling the comments "horrible.". Grande spoke out about the criticism on the ...