Contact-Fatigue Strength of Locomotive Tires  Full text 

I.G. Uzlov¹, A.N. Khulin¹, K.I. Uzlov¹, Zh.A. Dementieva¹, A.S. Baskevich²

¹Institute of Ferrous Metallurgy, National Academy of Sciences of Ukraine
²Ukrainian State University of Chemical Technology

UDC 621.771.292:629.4.014.2.

Metall. Min. Ind.,  2012, Vol. 4, No. 3, pp. 140-144

Abstract

We studied the contact-fatigue strength of tire steel with different hardness and structural condition. It is established that an increase in the hardness of steel from 275 to 350 HB and the change in the structure of the ferritic-pearlitic state to fine-pearlite with acicular ferrite and bainite leads to increased resistance to the formation of contact-fatigue spalling more than 100%. On the basis of X-ray diffraction studies the mechanism of formation of defects on the surface of tires was determined.

Keywords: LOCOMOTIVE TIRES, THE CONTACT-FATIGUE STRENGTH, MICROSTRUCTURE, HARDNESS, CHIPPING, X-RAY ANALYSIS