This paper examines the effect of heat scalding on attempts to establish exact lubricant consumption by application of the coefficient of friction between rail and wheel flange. The economic significance of the lubrication of rail and wheel flanges are also briefly discussed In an effort to quantify the surface temperatures produced by friction in the rail-wheel flange contact zone, track tests were conducted. The temperatures induced in the rail wear surface by wheels from passing trains were measured, as well as the dissemination of the heat across the rail profile. Unexpected results indicated a source of heat, not related to friction, induced into the rail by the passing wheels. Temperature measurements on a large number of wheels were analysed and are discussed. The effects of the over-heated wheels on the application quantities of lubricants are considered.
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