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Welding tungsten inert gas

TIG welding is an arc fusion welding process in which intense heat is produced by an electric arc between a non-consumable, torch-held tungsten electrode and a work piece see Fig. 8.117. [Pg.645]

Alloys with thoria (Th02> are used for TIG (Tungsten Inert Gas) welding electrodes and in electronic applications where its increased electron emission properties and high temperature strength prove advantageous. [Pg.916]

Figure 11.7 Effect of the heat of welding on micro-structure, hardness, and corrosion potential of welded assemblies of two aluminum alloys. (Top) Alloy 5456-H321 base metal with Alloy 5556 filler, three-pass metal inert gas weld. (Bottom) Alloy 22I9-T87 base metal with Alloy 2319 filler, two-pass tungsten inert gas weld. The differences in corrosion potential between the HAZ and the base metal can lead to selective corrosion. (Reproduced with permission from Daubert Cromwell.)... Figure 11.7 Effect of the heat of welding on micro-structure, hardness, and corrosion potential of welded assemblies of two aluminum alloys. (Top) Alloy 5456-H321 base metal with Alloy 5556 filler, three-pass metal inert gas weld. (Bottom) Alloy 22I9-T87 base metal with Alloy 2319 filler, two-pass tungsten inert gas weld. The differences in corrosion potential between the HAZ and the base metal can lead to selective corrosion. (Reproduced with permission from Daubert Cromwell.)...
Similarly, timgsten electrodes used in tungsten inert gas welding and filaments used in light bulbs and vacuum tubes are strengthened by dispersions of thoria (Th02) particles (thoriated timgsten). The presence of thoria in W also lowers work function and is used to improve the efficiency of electron emitters in x-ray tubes and other electron beam devices. [Pg.199]

See other pages where Welding tungsten inert gas is mentioned: [Pg.268]    [Pg.69]    [Pg.217]    [Pg.162]    [Pg.155]    [Pg.172]    [Pg.645]    [Pg.645]    [Pg.349]    [Pg.359]    [Pg.254]    [Pg.257]    [Pg.258]    [Pg.290]    [Pg.155]    [Pg.172]    [Pg.481]    [Pg.30]    [Pg.385]    [Pg.996]    [Pg.377]    [Pg.14]    [Pg.31]    [Pg.34]    [Pg.190]    [Pg.190]    [Pg.191]    [Pg.303]    [Pg.333]   
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See also in sourсe #XX -- [ Pg.172 , Pg.172 ]

See also in sourсe #XX -- [ Pg.456 ]

See also in sourсe #XX -- [ Pg.315 ]

See also in sourсe #XX -- [ Pg.203 ]



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