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2020 №12 (04) DOI of Article
10.37434/tpwj2020.12.05
2020 №12 (06)

The Paton Welding Journal 2020 #12
TPWJ, 2020, #12, 34-39 pages

Plasma transferred arc surfacing of composite alloys with separate feed of tungsten carbides and matrix alloy

Authors
A.I. Som and B.A. Halahuz
Plasma-Master Co., Ltd. 52 Popudrenko Str., 02094, Kyiv, Ukraine. E-mail: info@plasma-master.com

Abstract
Various combinations of separate feeding of cast spherical tungsten carbides and matrix alloy into the surfacing zone have been investigated. It has been established that when a self-fluxing nickel-based alloy is used as a matrix, the most stable surfacing process is achieved if tungsten carbides are fed through the axial bore in the focusing nozzle, and the matrix alloy comes through two channels located diametrically opposite to each other at its end. Ref. 6, 1 Table, 11 Figures.
Keywords: plasma transferred arc surfacing, tungsten carbides, spherical tungsten carbides, self-fluxing alloy, matrix, carbide distribution, wear resistance, microhardness

Received 02.12.2020

References

1. Harper, D., Gill, M., Hart, K W. D, Anderson, M. (2002) Plasma transferred arc overlays reduce operating costs in oil sand processing. In: Proc. of Int. Spray Conf. YTSC 2002 (Essen, Germany, May 2002), 278–283.
2. Som, A.I. (2004) Plasma-powder surfacing of composite alloys based on cast tungsten carbides. The Paton Welding J., 10, 49–53.
3. Som, A.I. (1999) New plasmatrons for plasma-powder surfacing. Avtomatich. Svarka, 7, 44‒48 [in Russian].
4. Zhudra, A.P. (2014) Tungsten carbide based cladding materials. The Paton Welding J., 6-7, 66-71. https://doi.org/10.15407/tpwj2014.06.13
5. Yuzvenko, Yu.A., Gavrish, V.A., Marienko, V.Yu. (1979) Laboratory units for evaluation of wear resistance of deposited metal. Theoretical and technological principles of surfacing. Properties and tests of deposited metal. Kiev, PWI, 23‒27 [in Russian].
6. Gladky, P.V., Pereplyotchikov, E.F., Ryabtsev, I.A. (2007) Plasma surfacing. Kiev, Ekotekhnologiya [in Russian].

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