Automatic Welding, 2022, №10



2022 №10 (07)

DOI of Article 10.37434/as2022.10.01

2022 №10 (02)

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Avtomaticheskaya Svarka (Automatic Welding), #10, 2022, pp. 7-16

Application of A-TIG welding for improving the technology of manufacturing and repair of units of gas turbine engines and installations from titanium alloys

D.V. Kovalenko, I.V. Kovalenko, B.O. Zaderii, G.V. Zvyagintseva

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The advantages of using the technology of A-TIG welding (TIG welding along the layer of activating flux – activator) of structurally complex elements of titanium alloys, including butt and spot overlapped joints of various thicknesses, as well as joints with variable heat dissipation, are shown. The relationship between the geometry of welds, structure and properties of welded joints produced by TIG and A-TIG welding methods was studied. A-TIG welding technology was tested in industrial conditions during creation and repair of problematic units of aircraft and convertible gas turbine engines. The A-TIG welding method is recommended for industrial implementation when creating welding structures from titanium alloys of a complex geometry. 15 Ref., 7 Tabl., 12 Fig.
Keywords: TIG and A-TIG welding, activators, titanium alloys, butt and spot overlapped joints, variable heat dissipation, weld formation, structure and properties


Received: 29.07.2022

References

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