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2 088 678

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IPC

(21) (22)

Application

95115462/02, 1995-08-31

(22)

Actual filing date

1995-08-31

(45)

Published

1997-08-27

(72)

Inventor

Korolev S.A.Kondrushin A.I.Valetov M.S.Konyshev A.A.Antipov B.F.Jandimirov A.A.Mazurin V.V.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Zavod"

METHOD OF HEAT TREATMENT OF RAILWAY ROAD WHEELS Russian patent published in 1997 - IPC

Abstract RU 2088678 C1

FIELD: heat treatment of one-piece rolled railway road wheels. SUBSTANCE: method comprises steps of interim cooling of wheels in air before tempering, heating them in conveyer furnace up to temper temperature, tempering them at 450-550 C, soaking during 2-3 hours and subjecting them to retarded cooling. Novelty is cooling, mainly of wheel boss at time period of interim air cooling. Further heating of wheel until temper temperature is realized at process of fuel burning directly in conveyer furnace. EFFECT: enhanced quality of railway road wheels after such heat treatment. 1 tbl

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RU 2 088 678 C1

Authors

Korolev S.A.

Kondrushin A.I.

Valetov M.S.

Konyshev A.A.

Antipov B.F.

Jandimirov A.A.

Mazurin V.V.

Dates

1997-08-27—Published

1995-08-31—Filed