The Paton Welding Journal, 2001, №02

2001 №02 (11)

2001 №02 (01)

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The Paton Welding Journal, 2001, #2, 53-54 pages

Experience in surfacing the grooves for labyrinth sealing of slush pump impellers

V.K. Kalensky, I.A. Ryabtsev, Ya.P. Chernyak

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The new technology had been developed for surfacing the sealing grooves of the cast impellers for slush pumps made from steel 12Kh18N12M3TL characterized by high corrosion resistance but low hardness. The new flux-cored wire and ingenious surfacing procedure are offered. The deposited metal even in the first layer has hardness equal to HRCe 42-48 and high corrosion resistance, which provides reliable sealing during the entire service life of the impellers
Keywords: arc surfacing, labyrinth seal, technology, surfacing procedure, vertical surfaces, impellers, flux-cored wire

References

1. Kakhovsky, N.l. (1975) Welding of high-alloy steels. Kyiv: Tekhnika.
2. Markin, Yu.V., Shejko, P.P. (1977) Pulse-arc surfacing of internal surfaces of cylindrical pieces in a vertical position. In: Theoretical and technological principles of surfacing. Nne processes of mechanized surfacing. Kyiv: PWI.
3. Komarov, A.I., Khodakov, V.D. (1980) Development of the process of anti-corrosion submerged-arc surfacing of internal surfaces of branch pipes of casing power-generation equipment. Ibid . Kyiv: PWI.

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Suggested Citation

V.K. Kalensky, I.A. Ryabtsev, Ya.P. Chernyak (2001) Experience in surfacing the grooves for labyrinth sealing of slush pump impellers. The Paton Welding J., 02, 53-54.

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