Effect of Plasma Quenching Parameters on Hardened Layer Properties in Railroad Wheels
Kanayev A. Kanayev A. Moldakhmetova A.
March 2025Faculty of Engineering, University of Kragujevac
Tribology in Industry
2025#47Issue 154 - 63 pp.
This research investigates the effect of quenching current, nozzle-to-surface distance, plasma-forming gas flow rate, and rate of cooling on both plasma torch travel speed (treatment speed) and nozzle diameter. Cooling rates were calculated for various quenching currents based on heat transfer theory. Results show that the relative significance of primary plasma selective quenching parameters remains consistent for both hardened zone depth and width. Notably, the effect of quenching current on hardened zone depth significantly exceeds that of other parameters, highlighting its critical role for optimizing railroad wheel performance. We propose a novel method for controlling the mechanical properties of the hardened surface through regulating wheelset rotational speed during quenching. This approach has the potential to significantly improve the wear resistance and lifespan of railroad wheels, leading to substantial cost savings for the railway industry.
Mechanical properties , Plasma selective quenching , Railroad wheels , Rotation frequency , Structure , Surface hardening , Wear resistance
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Department of Scientific Projects and Publications, L. Gumiliyov Eurasian National University, 2 Satbayev St, Astana, Kazakhstan
Department of Standardization, Certification and Metrology, L. Gumiliyov Eurasian National University, 2 Satbayev St, Astana, Kazakhstan
Department of Scientific Projects and Publications
Department of Standardization
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