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2 135 605

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C1

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IPC

(21) (22)

Application

96120519/02, 1996-10-08

(22)

Actual filing date

1996-10-08

(45)

Published

1999-08-27

(72)

Inventor

Lebedev V.V.Rivkin S.I.Zhivotovskaja T.V.Shchagina N.E.Safronova A.A.Efimova V.I.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavody"

METHOD OF THERMOCYCLIC TREATMENT OF LOW-ALLOYED AND CARBON STEELS Russian patent published in 1999 - IPC

Abstract RU 2135605 C1

FIELD: heat treatment of steel; applicable in heat treatment of perlitic steels used in mechanical engineering. SUBSTANCE: method includes heating to temperature of homogenization of austenite at rate of 3-5 C/min and cooling at rate ensuring sorbit, or martensite, or bainite conversion to temperature below Ar1, or Mk, or Bk by 50-100 C. EFFECT: higher impact strength of carbon and low-alloyed steels of perlite class with simultaneous increase of strength properties. 1 tbl

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RU 2 135 605 C1

Authors

Lebedev V.V.

Rivkin S.I.

Zhivotovskaja T.V.

Shchagina N.E.

Safronova A.A.

Efimova V.I.

Dates

1999-08-27—Published

1996-10-08—Filed

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