The Paton Welding Journal, 2013, №04



2013 №04 (09)

2013 №04 (11)

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The Paton Welding Journal, 2013, #4, 53-55 pages  

PLASMA-POWDER SURFACING OF POWER FITTING RODS

E.F. PEREPLYOTCHIKOV and I.A. RYABTSEV

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Iron-based filler powder 15Kh19N9M4S5G3D was selected, and technology of mechanized plasma surfacing of sealing and cylindrical surfaces of rods (spindles) of fittings, operating in thermal and nuclear power stations, was developed. Metal deposited with this powder has the required service properties, and its price is lower compared to earlier applied for this purpose nickel alloys. Application of plasma-powder surfacing of rods of power fittings instead of coated-electrode manual arc and automatic flux-cored arc surfacing allowed improving the deposited metal quality, reducing machining tolerances, as well as lowering the surfacing costs and extending the service life of stop valves. 5 Ref., 1 Table, 6 Figures.
 
 
Keywords: plasma-powder surfacing, surfacing powders, surfacing equipment, stop valves, rods, spindles
 
 
Received:                31.10.13
Published:               28.04.13
 
 
References
1. Eremeev, V.V., Strelyany, Yu.V., Korbut, V.A. et al. (1979) Chemical inhomogeneity of metal deposited with different electrode consumables. In: Properties and testing of deposited metal: Theoretical and technological principles of surfacing. Kiev: PWI, 36-42.
2. Stepin, V.S., Starchenko, E.G. (2010) Application of dispersion hardening Cr-Ni-Si-steels for gate valve elements and surfacing of sealing surfaces of TPS and NPP fittings. Armaturostroenie, 3, 66-69.
3. Pereplyotchikov, E.F., Ryabtsev, I.A. (2011) Properties of iron-based alloys for plasma-powder hard-surfacing of sealing surfaces of fittings. The Paton Welding J., 9, 27-31.
4. Gladky, P.V., Pereplyotchikov, E.F., Ryabtsev, I.A. (2007) Plasma surfacing. Kiev: Ekotekhnologia.
5. Pereplyotchikov, E.F., Ryabtsev, I.A. (2007) Plasma-powder surfacing in fitting engineering. Kiev: Ekotekhnologia.

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