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Influence of shielding gases on quality and efficiency in gas shielded arc welding
Authors:T Sato
Affiliation:Nippon Sansa Corporation ,
Abstract: /></span>This article describes the physical principle of function and some examples of the application of the keyhole TIG (K-TIG) welding process.</p> Due to its specificity, this welding process has been shown to be valid for performing full penetration welds, even with a single pass, on various types of materials, particularly valuable materials: indeed, it is very well suited to being applied to such materials as austenitic stainless steel, titanium and its alloys, nickel alloys, the austeno-ferritic (duplex) steels, obviously in addition to the C–Mn steels.</p> This article describes the physical principle of functioning of K-TIG welding process, besides some examples of application in different working situations.</p> Such a welding process has proved itself to be suitable to execute Mel-nil-thickness welding of different kinds of metallic materials (also with a single pass). This welding process is particularly suited to be applied on the most valuable materials, like: inox stainless steel, titanium and its alloys, nickel alloys, duplex steel, C–Mn steels.</td> </tr> <tr> <td align=
Keywords:current  GTA welding  influencing factors  keyholing  mathematical models  mechanical properties  microstructure  process parameters  stainless steels  surface tension  thermal conductivity  titanium alloys
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