Abstract
Fatigue failure of rotors of turbocharger systems is prevented by various methods of surface plastic deformation which increase their fatigue strength and service life. One of the most effective methods is hardening with spheres in an ultrasound field, described in this paper. A diagram of the unit for ultrasonic hardening of the surface of rotors is presented. As a result of the development of equipment and selection of the conditions of the finishing operations of treatment of the rotors, it was simple to introduce the hardening process in commercially produced turbocharger systems.
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