TY CONF TI TO THE QUESTION OF THE CHOICE OF HARDENING TECHNOLOGY IN THE MANUFACTURE AND RESTORATION OF HYDRAULIC CYLINDER RODS OF TRANSPORT VEHICLES KW hydraulic cylinder rods KW hardening during manufacture and repair KW plasma method JO Innovations in road transport AU Popov, D.A. AU Kadyrmetov, A.M. AU Fatkhulin, V.R. AU Putyatin, P.A. PY 2022 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov