Modeling of the friction process in the coupling of a cylinder sleeve-piston ring of a diesel engine

The article is devoted to the study of the wear resistance of high-strength cast iron hardened by laser hardening in the coupling of a cylinder sleeve - piston ring in heavy diesel engines. The process of frictional interaction is modeled on a laboratory friction machine with reciprocating motion, in which a cast iron sample is used in the form of a plate cut from a sleeve and a segment cut from a piston ring. The cast iron sample is hardened by a laser forming hardening tracks. The geometric shapes of the hardening track after laser hardening treatment change the wear resistance of the sample surfaces. The optimal technology of laser hardening of cylinder bushings is determined by an experimental search of the geometry of the application of hardening tracks.