Process for heat-treating rails

Details Process for heat-treating rails Process for heat-treating rails

C - Chemistry, Metallurgy

21

D

148/45

C21D 9/04 (2006.01) C21D 1/60 (2006.01) C21D 1/63 (2006.01)

Patent

CA 1205729

Abstract: For heat-treating rails for achieving a high wear resistance, at least the rail head is, starting from a temperature lying within the austenite range, brought to a temperature at which perlitizing is completed by means of a cooling medium con- taining 20 to 60 % by volume of a polyglycol. This treatment is particularily concerned with steels containing 0.65 to 0.85 % C and 0.5 to 2.5 % Mn. A Vickers hardness HV30 between 340 and 380 is obtained.

423018

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