METHOD OF HEAT TREATMENT OF RAILS Russian patent published in 2005 - IPC

Abstract RU 2254382 C1

FIELD: ferrous metallurgy; methods of heat treatment of railway rails.

SUBSTANCE: proposed method includes delivery of rail for heat treatment at temperature of 810-830°C; hardening of rail head is performed by immersion in polymer medium at temperature of 20-58°C; duration of treatment is equal to 40-60 s and rate of cooling the head is equal to 8-13°C/s; for cooling the rail foot, use is made of compressed air at flow rate of 18-25 m3/min at pressure of 3-5 atm and at temperature of 10-30°C during entire period of hardening and 40-50 s after hardening at cooling rate of 9-13°C/s.

EFFECT: improved mechanical properties and hardness of steel; increased operational resistance of rails.

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RU 2 254 382 C1

Authors

Pavlov V.V.

Vorozhishchev V.I.

Pjatajkin E.M.

Korneva L.V.

Kozyrev N.A.

Teploukhov G.M.

Orzhekh M.B.

Dement'Ev V.P.

Godik L.A.

Morenko A.V.

Rudenkov V.A.

Dates

2005-06-20Published

2004-02-24Filed