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2 044 070

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IPC

(21) (22)

Application

5046206/02, 1992-06-05

(22)

Actual filing date

1992-06-05

(45)

Published

1995-09-20

(72)

Inventor

Lebedev V.V.Khrapov I.I.Dmitriev L.Kh.Kukhtin N.S.Shchagina N.E.Nasonovskaja L.B.Zhivotovskaja T.V.

(73)

Holder

Aktsionernoe Obshchestvo Zavody"

METHOD FOR HEAT TREATMENT OF STEEL Russian patent published in 1995 - IPC

Abstract RU 2044070 C1

FIELD: mechanical engineering. SUBSTANCE: method for heat treatment of steel includes preliminary heating up to temperature higher than Ac₁ by 10-20 C with isothermal holding for at least 4 h. After isothermal holding, further heating is effected to temperature higher than Ac₃ by 140-160 C. Method is applicable in final heat treatment and in chemical and heat treatment. EFFECT: reduced autodeformation and higher yield point and impact strength. 1 tbl

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RU 2 044 070 C1

Authors

Lebedev V.V.

Khrapov I.I.

Dmitriev L.Kh.

Kukhtin N.S.

Shchagina N.E.

Nasonovskaja L.B.

Zhivotovskaja T.V.

Dates

1995-09-20—Published

1992-06-05—Filed