The Paton Welding Journal, 2022, №04



2022 №04 (02)

DOI of Article 10.37434/tpwj2022.04.03

2022 №04 (04)

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The Paton Welding Journal, 2022, #4, 14-18 pages

Centrifugal plasma surfacing of drill pump bushings

O.I. Som

Plasma-Master Co. Ltd. 3 Akademik Krzhizhanovskii Str., 03142, Kyiv, Ukraine

Abstract
Features of centrifugal plasma surfacing using powders of three different alloying systems based on iron and nickel were studied. It is found that at centrifugal plasma surfacing the iron-based test powder has the best welding-technological properties. It allows producing deposited metal of 200Kh15D2MS2R type. The layer deposited with this powder, has a microstructure of uniform height and ensures increase of the sleeve wear resistance 5–6 times, compared to batch-produced ones, which are made from steel 70 and 􀁔uenched by HFC. A design of the bushing component is proposed with replaceable surfaced sleeve, which is more adaptable to fabrication and allows repairing it by simple replacement of the worn sleeve.
Keywords: centrifugal plasma surfacing, surfacing alloys, deposited metal, metal structure, wear resistance, carbides, hardness, layer thickness

Received: 19.04.2022
Accepted: 30.06.2022

References

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