The Paton Welding Journal, 2012, №10



2012 №10 (07)

2012 №10 (09)

---

The Paton Welding Journal, 2012, #10, 44-49 pages  

THERMAL SPRAYING OF COATINGS USING TIPS

A.P. Murashov

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Application of special tips in thermal spaying reduces the number of uncontrolled factors influencing the process, increases the speed of jet outflowing, lowers the degree of its interaction with the ambient atmosphere, and reduces the opening angle. The paper gives recommendations for designing the tips, and shows their effectiveness at coating deposition.
 
 
Keywords: thermal spraying, coatings, application of tips, high-temperature gas jet, speed distribution, average temperature of the field, sprayed particles, gas-dynamic effect
 
 
Received:                07.05.12
Published:               28.10.12
 
 
References
 
1. Krechman, E. (1966) Spraying of metals, ceramics and plastics. Moscow: Mashinostroenie.
2. Hasui, A. (1967) Technique of spraying. Moscow: Mashinostroenie.
3. Kudinov, V.V. (1977) Plasma coatings. Moscow: Mashinostroenie.
4. Tsvetkov, Yu.V., Panfilov, S.A. (1980) Low-temperature plasma in repair processes. Moscow: Nauka.
5. Kalita, V.I. (2005) Physics, chemistry and mechanics of formation of coatings strengthened with nanosized phases. Fizika i Khimiya Obrab. Materialov, 4, 46-57.
6. Suzuki, M., Sodeoka, S., Inoue, T. (2003) Study on alumina-based nanocomposite coating prepared by plasma spray. In: Proc. of Int. Thermal Spray Conf. (Ohio, USA, May 5-8, 2003).
7. Korobov, Yu.S., Boronenkov, V.N. (2003) Kinetics of interaction between sprayed metal and oxygen in arc metallizing. Svarochn. Proizvodstvo, 7, 30-36.
8. Dorozhkin, N.N., Baranovsky, V.E., Elistratov, A.P. (1983) Activated arc metallizing process. Vesti AN BSSR. Series Physics and Technology, 3, 73-78.
9. Verstak, A., Baranovski, V. (2004) HVAF arc spraying. In: Proc. of Int. Thermal Spray Conf. (Osaka, Japan, 10-12 May, 2004).
10. Karp, I.N., Petrov, S.V., Rudoj, A.P. (1991) Arc metallizing in high velocity flow of methane burning products. Avtomatich. Svarka, 1, 62-65.
11. Buryakin, V. (2004) Improvement of thermal spraying equipment. Svarochn. Proizvodstvo, 5, 30-35.
12. Dresvin, S.V., Donskoj, A.V., Goldfarb, V.M. et al. (1972) Physics and technology of low-temperature jet. Moscow: Atomizdat.
13. Kudinov, V.V., Kalita, V.N., Komlev, D.N. et al. (1992) Analysis of distribution of particle velocity and specific enthalpy on radius of spraying spot in using of conic orifice. Fizika i Khimiya Obrab. Materialov, 5, 82-85.
14. Busroid, R. (1975) Gas flow with suspended particles. Moscow: Mir.
15. Linnik, V.A., Pekshev, P.Yu. (1985) Current technology of thermal spraying of coatings. Moscow: Mashinostroenie.
16. Kudinov, V.V., Kosolapov, A.N., Pekshev, P.Yu. (1967) Nozzles for providing of local protection in plasma spraying. Izvestiya SO AN SSSR. Series Technical Sci., 21, Issue 6, 69-75.
17. Borisov, Yu.S., Korzhik, V.N., Chernyshov, A.V. et al. (1991) Optimization of parameters and conditions of gas-dynamic nozzle application in thermal spraying. Avtomatich. Svarka, 8, 67-70.
18. Povkh, I.L. (1974) Aerodynamical experiment in machine-building. Leningrad: Mashinostroenie.
19. Abramovich, G.N. (1969) Applied gas dynamics. Moscow: Nauka.
20. Borisov, Yu.S., Krivtsun, I.V., Muzhichenko, A.F. et al. (2000) Computer modeling of the plasma spraying process. The Paton Welding J., 12, 40-50.

---