621.793
Doi: 10.31772/2587-6066-2020-21-2-274-278
А. E. Mikheev, A. V. Girn, I. O. Yakubovich, M. S. Rudenko
Reshetnev Siberian State University of Science and Technology;
31, Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037, Russian Federation
Plasma spraying is one of technologically appropriate, productive and effective methods of applying protec-tive coatings to component parts produced by aerospace, metallurgical and other industries, objects exposed to high temperatures, dynamic loads, aggressive media, etc. Plasma spraying makes it possible to apply quite a va-riety of materials, such as metals, oxides, carbides, nitrides, etc. to different surfaces. Certain problems may arise, though, in applying protective coatings to the inner surfaces of cylinders and complex parts of small size (about 100 mm). These complexities depend on the dimensions of the plasma generator proper. There are no home-produced small-size plasma torches, they are all imported from other countries. That causes certain prob-lems with delivery, to say nothing of very high commercial price. One of the ways to improve the situation is to develop small-size plasmatrons capable of applying high-quality coatings to the internal surfaces of limited-size parts; that may significantly reduce expenses through import substitution.
The effectiveness of the proposed device is in working out a method of applying high-quality coatings to the inner surfaces of orifices as small as 60 mm in diameter (operating a plasmatron of smaller size), as well as in significant cost reduction due to domestic production. Sample calculations show that the price of that plasma-tron type will not exceed 0.5 million rubles.
Keywords: plasmatron, plasma spraying, internal surface coating.
Khasuy A. Tekhnika
napyleniya [Spraying technique]. Moscow,
Mashinostroyeniye Publ., 1975, 288 p.
2. Kudinov
V. V. Plazmennye pokrytiya [Plasma
coatings]. Moscow,
Nauka Publ., 1977, 270 p.
3. Kudinov
V. V, Ivanov V. M. Naneseniye plazmoy
tugoplavkikh pokrytiy [Plasma application of refractory coatings]. Moscow, Mashinostroyeniye
Publ., 1981,
212 p.
4. Borisov Yu.
S., KHarlamov Yu. A., Sidorenko S. L., Ardatovskaya E. N. Gazotermicheskiyye pokrytiya iz poroshkovykh
materialov: Spravochnik [Gasothermic coating with powder materials:
Reference book]. Kiev,
Naukova dumka Publ., 1987, 544 p.
5. Kopylov
V. I, Shatinskiy V. F. [Investigation of processes in plasma spraying contact
zone and estimation of their
parameters]. Neorganicheskiye i
organosilikatnyye pokrytiya. 1975, P. 96– 106 (In Russ.).
6. Puzryakov
A. F. Teoreticheskiyye osnovy tekhnologii
plazmennogo napyleniya [Theoretical
Foundations of the Technology of Plasma Sputtering]. Moscow, MGTU im. N. E. Baumana Publ., 2008,
235 p.
7. Kharlamov
Yu. A. [Factors influencing the adhesion strength of gas-thermal coatings]. Zashchitnye
pokrytiya na metallakh. 1988, No. 22, P. 30–34 (In Russ.).
8. Polak L.
S., Surov N. S. [Investigation of the interaction of powder particles with
plasma flow in the nozzle]. Fizika i
khimiya obrabotki materialov. 1969, No. 2, P. 19–29 (In Russ.).
9. Mikheev
A. E., Kolmykov V. A. Povysheniye ekspluatatsionnykh
kharakteristik poverkhnostey elementov konstruktsiy letatel 'nykh apparatov.
Avtomatizatsiya protsessov obrabotki [Upgrading of operational characteristics
of aircraft components’ surfaces. Automation of treatment processes]. Moscow, MAKS Press Publ.,
2002, 224 p.
10. Mikheev
A. E., Statsura V. V., Nikushkin N. V. [Equipment for high-quality gas-thermal
coating application]. III otraslevaya
nauchno-tekhnicheskaya konferentsiya “Primeneniyye gazotermicheskikh pokrytiy v
mashinostroyyenii” [III Industry science and technology
conference “Application of gas-thermal coatings in mechanical engineering”]. Moscow, 1990, P. 84–87
(In Russ.).
11. Mikheyev
A. E., Statsura V. V., Ivasev S. S.,
Gim A. V. [Processing of refractory oxides in low-temperature plasma]. Sb. nauchnykh trudov Vserossiyskoy
nauchno-tekhnicheskoy konferentsii “Materialy i tekhnologii XXI veka“
[Proceedings of Russian science and technical conference “Materials and
technologies of the XXI century“]. Penza,
2001, P. 123–125 (In Russ.).
12. Donskoy
A. V., Klubnikin V. S. Elektroplazmennyyye
protsessy i ustanovki v mashinostroyenii [Electroplasma processes and
equipment in mechanical engineering], Leningrad,
Mashinostroyyeniye Publ., 1979, 221 p.
13. Zhukov
M. F., Smolyakov V. Ya, Uryukov B. A. Elektrodugovye
nagrevateli gaza
(plazmotrony) [Electric arc gas heaters (plasmatrons)]. Moscow, Nauka Publ., 1973, 232 p.
14. Yavleniya perenosa v nizkotemperaturno-y
plazme [Transference phenomena in low- temperature plasma]. Ed. A.V. Lykova
et al. Minsk,
Nauka i tekhnika Publ., 1969, 248 p.
15. Saunin
V. N. Elektrodugovoy plazmotron Saunina [Saunin
electric arc plasmatron]. Patent RF, No. 2276840, 2006.
16. Ivanchenko A. F., Lavrinenko M. Z., Mel'nik
B. I., Prisevok A. F., Sannikov V. A., Solovey A. I., Fedo-
rtsev V. A. Sposob naneseniya pokrytiy na
vnutrennie poverkhnosti tsilindricheskikh izdeliy i ustroystvo dlya ego
osushchestvleniya [Method of coating inner surfaces of cylinders and device
for the coating application]. Patent No. 2009027, 1994.
17. BY 8930
U 2013.02.28 Plasmatron for coating
internal surfaces of component parts.
18. FI plasma torch of innatech.ru
(manufacturers: Dinse – www.dinse.eu, AMT www.amt-ag.net).