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Tribology Characteristics of Heatproof Alloys at a Dynamic Pin Ladening in the Variable Temperature Field
 
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Ukryj
1
Department of Manufacturing Systems, Faculty of Mechanical Engineering and Robotics, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
 
2
Department of Machine-tool Sand Instrument, National University "Zaporizhzhia Polytechnic", ul. Zhukovskogo 64, UA-69063 Zaporizhzhia, Ukraine
 
3
Department of Aircraft Engine Technology, National University "Zaporizhzhia Polytechnic", ul. Zhukovskogo 64, UA-69063 Zaporizhzhia, Ukraine
 
4
Department of Computerized Mechanical Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, ul. Karpatska 15, UA-76019 Ivano-Frankivsk, Ukraine
 
 
Autor do korespondencji
Michał Bembenek   

Department of Manufacturing Systems, Faculty of Mechanical Engineering and Robotics, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
 
 
Adv. Sci. Technol. Res. J. 2023; 17(5):140-152
 
SŁOWA KLUCZOWE
DZIEDZINY
 
STRESZCZENIE
An analysis of the operating conditions of gas turbine engines, their components, and the destruction causes was carried out. The designer problems of tribo-joints operating under difficult conditions of force and temperature loads are singled out. The study aimed at obtaining the comparable quantitative dependences of blade material wear, taking into account the role of both cyclical changes in the temperature of the gas flow under the conditions close to real ones, and their frictional characteristics. Deformable heat-resistant nickel alloys and foundry heat-resistant nickel alloys from which T-shaped samples were made, were chosen for the research. The tests were carried out on the developed gas dynamic stand, which simulates the working conditions of the bandage joints of the bladed turbomachines of gas turbine installations. The intensity of wear was determined as the ratio of the worn material volume to the number of load cycles under different temperature conditions. The wear resistance of three-way connections operating under the conditions of non-stationary thermal loads and fluctuations in the contact was considered. It was shown that thermal cycling leads to a decrease in the wear resistance of heat-resistant nickel alloys by 2–3 times and depends on the average temperature of the cycle. It was found that resistance to the wear, and also the character of change of coefficient of friction is mainly determined by the terms of education and destruction of the protective superficial layer. Basic factors managing tribology processes in the zone of contact were determined.
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