The analysis of the selected processes of thermo-chemical heat treatment of 20MnCr5 steel in the context of abrasive wear

This paper presents the results of tribological tests performed on a T-11 pin-ondisc type, which made it possible to determine the intensity of abrasive wear of * Bialystok University of Technology, Faculty of Mechanical Engineering, ul. Wiejska 45C, 15-351 Białystok, Poland, e-mail: w.tarasiuk@pb.edu.pl, tel. 571 443 038. ** ML-Tech Sp. z o. o., Poland, e-mail: m.liszewski@interia.pl, tel. 535 620 033. *** Bialystok University of Technology, Faculty of Management, Department of Production Management, Poland, e-mail: b.krupicz@pb.edu.pl, tel. 85 746 98 44. **** University of Technology in Warsaw, Institute of Mechanical Engineering, Faculty of Civil Engineering, Mechanics, and Petrochemistry, Branch in Plock, Poland, e-mail: kasprzyckaewa@gmail.com, tel.(24) 367 21 15. T R I B O L O G I A 5-2016 184 steel 20MnCr5 subjected to selected thermo-chemical heat treatments. The tested steel, after the hardening and tempering process, is characterized by high endurance parameters and is used on heavily loaded machine parts. It is frequently used for elements subjected to intense abrasion. The analysis involved the following: carburizing, boronizing, and various methods of diffusion chromizing. For large loads, it is advisable to apply boronizing or carburizing with hardening. Chrome plating entails a very thin layer of increased hardness, which is characterised by a low abrasive wear resistance at high loads.