employee
Kolomna, Moscow, Russian Federation
employee
Kolomna, Moscow, Russian Federation
employee
Kolomna, Moscow, Russian Federation
employee
Kolomna, Moscow, Russian Federation
employee
Moscow, Moscow, Russian Federation
UDC 629.4.027.43
Russian Library and Bibliographic Classification 392
The interaction of joint points of the tyre and the wheel center when connected with tension, resulting in thermal resistance, is described. When the locomotive brakes, there occurs a temperature gradient between the tyre and the wheel center, which can lead to the tyre movement. To study the effect of braking on the temperature gradient, comparative tests of two coatings applied to the rim of the wheel center using plasma spraying were carried out. Based on the results of the tests, it can be concluded that the use of PG-19M-01 coating according to TU 48-19-383-90 can reduce the temperature gradient between the tyre and the wheel center by up to 30%.
tyre movements, resistance, wheel, spraying, heat-conducting coating
1. Inozemtsev VG. Thermal calculations in the design and operation of brakes. Moscow: Transport; 1966.
2. Inozemtsev VG, Grebenyuk PT. Norms and methods of calculating car brakes. Moscow: Transport ; 1971.
3. Inozemtsev VG, Ivanov VV, Grek VI, Nikolskaya EN. On the reliability of connecting the band to the wheel center. Russian Railway Science Journal. 1986;3:29-33.
4. Shlykov YuP, Ganin EA, Tsarevsky SN. Contact thermal resistance. Moscow: Energiya; 1977.
5. Popov VM. Heat exchange in the contact zone of detachable and permanent joints. Moscow: Energiya; 1971.
6. Kharitonov VV, Yakutin NV. Contact heat exchange of heterogeneous materials. Technical Physics. 1997;2:1-6.
7. Shojaefard MH, Goudarzi K. The numerical estimation of thermal contact resistance in contacting surfaces. American Journal of Applied Sciences. 2008;5(11):1566-1571.
8. Mesnyansky SYu, Vikulov AG, Vikulov DG. A modern view on the problems of thermal contacting of solids. All-Russian Mathematical Portal [Internet]. [cited 20June 02]. Available from: https://www.mathnet.ru/links/b00dcd4445142fd7038993a24c026897/ufn818.pdf.
9. Grek VI, Gushchin PP. On residual tension and fretting of corrosion in the connection of the band-wheel center with extremely worn-out bands of wheel pairs of diesel locomotives. Russian Railway Science Journal. 1977;76:71-77.
10. Grek VI. On reducing the thermal stress of the wheelset band and increasing the strength of its connection to the wheel center. Russian Railway Science Journal. 2005;85:147-154.
11. Russian Railways. Instructions for the inspection, repair and formation of wheel pairs of locomotives, motor-car rolling stock of 1520 mm gauge. Moscow. 2025 Apr 14.
12. Abdollahi H, Shahraki S, Motahari-Nezhad M. A review on the effects of different parameters on contact heat transfer. Thermophysics and Aerodynamics. 2017;4:513-528.
