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2 489 498

(13)

(51)

IPC

C21D1/56(2006-01-01)

C21D1/62(2006-01-01)

B61F5/12(2006-01-01)

(21) (22)

Application

2011150926/02, 2011-12-15

(24)

Start date

2011-12-15

(22)

Actual filing date

2011-12-15

(45)

Published

2013-08-10

(72)

Inventor

Tsurenkov Andrej NikolaevichKondratskij Aleksandr PavlovichOrlov Roman ViktorovichFedin Vladimir MikhajlovichBorts Aleksej IgorevichUshakov Boris Konstantinovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF HEAT TREATMENT OF STEEL FRICTION WEDGES OF FREIGHT CAR BOGIE AND QUENCH TO THIS END Russian patent published in 2013 - IPC C21D1/56 C21D1/62 B61F5/12

Abstract RU 2489498 C1

FIELD: transport.

SUBSTANCE: proposed process comprises surface-volumetric quenching at wedge overall heating to 900-910°C and cooling by water flow at the rate of 320 m³/h for 15-30 s and water flow velocity of 2.0-5.0 m/s at wedge inclined and vertical wall surfaces to ensure hardness of vertical wall surface of 45-50 HRC and inclined wall surface of 35-40 HRC. Quench allows relationship of water feed to wedge vertical and inclined surfaces of 6:1 and preset hardness ratios.

EFFECT: higher life.

2 cl, 5 dwg, 1 ex

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RU 2 489 498 C1

Authors

Tsurenkov Andrej Nikolaevich

Kondratskij Aleksandr Pavlovich

Orlov Roman Viktorovich

Fedin Vladimir Mikhajlovich

Borts Aleksej Igorevich

Ushakov Boris Konstantinovich

Dates

2013-08-10—Published

2011-12-15—Filed