Automatic Welding, 2023, №07



2023 №07 (04)

DOI of Article 10.37434/as2023.07.05

2023 №07 (06)

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Avtomaticheskaya Svarka (Automatic Welding), #7, 2023, pp. 37-47

Induction welding of pipes and pipe fittings with the use of activating substances (Review)

O.S. Prokofiev¹, R.S. Gubatyuk¹, S.V. Rymar¹, V.M. Abdulah¹, O.I. Petrienko¹, V.S. Senchyshyn²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²Ternopil Ivan Puluj National Technical University. 56 Ruska Str., 46001, Ternopil, Ukraine.

In the framework of studies aimed at the development of technologies of welding steels in a solid phase at the PWI of NAS of Ukraine, a method of induction pressure welding of pipes and pipe fittings with the strength of welded joint at the level of base metal with the use of activating substances was developed. The process of joining occurs when welded edges of base metal are heated to the plastic state with a heat from eddy currents and by a complete melting of preliminary activating substances introduced into the place of a joint, which are chemically cleaned and partially dissolve the metal of the surface of welding edges and as the pressure is applied to the edges, they are squeezed out from the welded joint zone. Due to the applied pressure, the welded joint is formed in the solid phase by a plastic deformed base metal. In the weld, only slight embeddiments of metal fraction of the activating substance and its alloy with the base metal are observed. 30 Ref., 1 Tabl., 15 Fig.
Keywords: induction pressure welding, activating substances, induction heating, welded butt, pipes, pipe fittings


Received: 28.03.2023

References

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