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2 423 536

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(51)

IPC

C22B9/18(2006-01-01)

(21) (22)

Application

2009148978/02, 2009-12-28

(24)

Start date

2009-12-28

(22)

Actual filing date

2009-12-28

(45)

Published

2011-07-10

(72)

Inventor

Pavlova Natal'Ja PetrovnaDemidov Vladimir AleksandrovichPolovinkin Valerij Nikolaevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Zavod"

PROCEDURE FOR MELTING HOLLOW INGOTS OF TITAN AND BORON CONTAINING GRADES OF STEEL BY METHOD OF ESR (ELECTRO-SLAG RE-MELTING) Russian patent published in 2011 - IPC C22B9/18

Abstract RU 2423536 C1

FIELD: metallurgy.

SUBSTANCE: procedure consists in re-melting consumable electrode in movable crystalliser with mandrel in main flux containing, wt %: calcium fluoride 54-56, aluminium oxide 18-20, calcium oxide 10-12, magnesium oxide 8-10, titanium dioxide 6-8 and additional having following composition, wt %: calcium fluoride 52-54, aluminium oxide 30-33, magnesium oxide 14-16.

EFFECT: production of qualitative metal titan and boron containing grades of steel with uniform distribution of elements by height of ingot.

3 tbl

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RU 2 423 536 C1

Authors

Pavlova Natal'Ja Petrovna

Demidov Vladimir Aleksandrovich

Polovinkin Valerij Nikolaevich

Dates

2011-07-10—Published

2009-12-28—Filed