C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 9/04 (2006.01) C21D 1/60 (2006.01) C21D 1/63 (2006.01)
Patent
CA 2116216
A method for the thermal treatment of rails, in particular of the rail head, in which cooling is carried out in a cooling agent that contains a synthetic cooling agent additive, and starting at temperatures above 720°C. The treatment is carried out by immersion in the cooling agent until withdrawal of the immersed areas occurs, at a surface temperature between 450 and 550°C which results without temperature equalization across the entire cross-section, thereby avoiding hardening of the rail web whilst maintaining an optimal cooling rate for the rail head.
Moser Alfred
Pointner Peter
Prskawetz Georg
Marks & Clerk
Voest-Alpine Schienen Gmbh
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