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2 307 195

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(51)

IPC

C22C38/38(2006-01-01)

(21) (22)

Application

2006107490/02, 2006-03-10

(24)

Start date

2006-03-10

(22)

Actual filing date

2006-03-10

(45)

Published

2007-09-27

(72)

Inventor

Ermakov Boris SergeevichSolntsev Jurij Porfir'EvichJarygin Georgij Evgen'EvichKarginova Viktorija ViktorovnaDurynin Viktor Alekseevich

(73)

Holder

Sankt-Peterburgskij Gosudarstvennyj Universitet Nizkotemperaturnykh I Pishchevykh Tekhnologij

COLD-RESISTANT LOW-MAGNETIC STEEL FOR UNITS AND PARTS OF DRILLING EQUIPMENT Russian patent published in 2007 - IPC C22C38/38

Abstract RU 2307195 C1

FIELD: steel industry and oil and gas production.

SUBSTANCE: steel of invention is composed of, wt %: carbon 1.0-1.2, manganese 24.0-26.0, chromium 2.5-5.0, aluminum 4.0-6.0, boron 0.005-0.1, yttrium 0.005-0.05, cerium 0.005-0.05, vanadium 0.08-0.12, niobium 0.01-0.04, calcium 0.001-0.01, and iron - the balance.

EFFECT: achieved high mechanical properties and low magnetic permeability, whose value does not change with drilling equipment working temperature range.

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RU 2 307 195 C1

Authors

Ermakov Boris Sergeevich

Solntsev Jurij Porfir'Evich

Jarygin Georgij Evgen'Evich

Karginova Viktorija Viktorovna

Durynin Viktor Alekseevich

Dates

2007-09-27—Published

2006-03-10—Filed