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2 237 107

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IPC

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Application

2003124203/02, 2003-08-05

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Start date

2003-08-05

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Actual filing date

2003-08-05

(45)

Published

2004-09-27

(72)

Inventor

Bobylev M.V.Kulapov A.N.Stepanov N.V.Antonova Z.A.Lekhtman A.A.Gontaruk E.I.Peshev A.D.Lamukhin A.M.Vodovozova G.S.Koroleva E.G.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Inso"

STEEL WITH ENHANCED HARDENABILITY FOR COLD DIE FORGING STAMPING Russian patent published in 2004 - IPC

Abstract RU 2237107 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to the development of steel with enhanced hardenability designated for making complex-profiling articles by method of cold die forging stamping. The claimed steel comprises components taken in the following ratio, wt.-%: carbon, 0.28-0.35; manganese, 0.90-1.40; silicon, 0.01-0.17; sulfur, 0.005-0.020; chrome, 0.01-0.25; vanadium, 0.01-0.07; nickel, 0.01-0.20; niobium, 0.005-0.02; titanium, 0.01-0.04; boron, 0.0005-0.0050; aluminium, 0.02-0.06; nitrogen, 0.005-0.015; iron and inevitable impurities, the balance, in accomplishment the following ratios: N/(10 x Ti + Al) ≤ 0.39, and Ti x B/N ≥ 0.0040. Invention provides enhancing steel hardenability indices that provides guaranteed level of consumers' properties of bar rolled products with diameter below 35 mm.

EFFECT: improved and valuable properties of steel.

2 cl, 2 tbl, 1 ex

Similar patents RU2237107C1

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RU 2 237 107 C1

Authors

Bobylev M.V.

Kulapov A.N.

Stepanov N.V.

Antonova Z.A.

Lekhtman A.A.

Gontaruk E.I.

Peshev A.D.

Lamukhin A.M.

Vodovozova G.S.

Koroleva E.G.

Dates

2004-09-27—Published

2003-08-05—Filed