FIELD: metallurgy.
SUBSTANCE: method includes active cooling phase where the rail is rapidly cooled from austenite temperature and then smoothly cooled to maintain the target conversion temperature between the specified values of the cooling treatment performed by a plurality of cooling modules (12.n) each cooling module comprises a plurality of means for spraying the cooling medium on the rail, the method is characterized in that during the active cooling phase, each cooling means is driven to control the cooling rate of the rail so that amount of converted austenite in rail is not less than 50% on rail surface and not less than 20% in the rail head core.
EFFECT: production of desired microstructure, improved mechanical properties.
22 cl, 11 dwg
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