Способы повышения износостойкости и контактной выносливости зубчатых колёс

Abstract

Изложены результаты экспериментальных исследований износостойкости и контактной выносливости образцов из различных сталей после упрочнения методами термической обработки и ионного азотирования в водородных и безводородных средах, при трении качения с проскальзыванием. Отмечена важность влияния градиента свойств полученных композиций на эксплуатационные характеристики. Предложены способы повышения контактной выносливости и износостойкости зубчатых колес.The article lays out the results of experimental research of wear resistance and contact endurance of various steel specimens after hardening with heat treatment methods and ion nitriding in hydrogen and hydrogen-free media at combined rolling and sliding friction. The article distinguishes the importance of the influence of properties gradient of received compositions on the performance of the materials operating in rolling and combined rolling and sliding friction conditions. The article points to the need to achieve a minimum reduction of properties gradient in coating depth. The article emphasizes the role of residual compressive stress occurring in the coatings after ion nitriding. Research data on ion nitriding in hydrogen bearing and hydrogen-free media were provided. The analysis of the influence of aggressive media at friction pairs operation was performed. Data on comparative research of steels with different alloy degree were provided. The article offers the ways of increasing the contact endurance and durability of gear wheels.