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INFLUENCE OF HOT-REDUCTION PARAMETERS ON THE STEEL AUSTENITE STRUCTURE OF A RAILWAY WHEEL

Journal: Scientific Journal of Silesian University of Technology. Series Transport (Vol.93, No. 93)

Publication Date:

Authors : ; ; ; ;

Page : 141-148

Keywords : rim railway wheel; grain size; austenite; temperature; hot-hardening;

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Abstract

The formation of grain structures with boundaries similar to substructures is one of the factors contributing to grain refinement in hot-reduction carbon steel. At the forming of a rim, the slight cooling-down (100-150°С) of the surface volumes is sufficient to increase their strength characteristics. After that, an increase in the magnitude of the hot-hardening of metal in the central rim volumes will lead to the formation of a more uniform fine-grain austenite structure over the rim section.

Last modified: 2016-12-23 17:28:16