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2 082 817

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C1

(51)

IPC

(21) (22)

Application

94015414/02, 1994-04-27

(22)

Actual filing date

1994-04-27

(45)

Published

1997-06-27

(72)

Inventor

Baranov V.A.

(73)

Holder

Verkhnesaldinskoe Metallurgicheskoe Proizvodstvennoe Ob"Edinenie

METHOD OF TREATING INGOTS OF HIGHLY REACTIVE METALS AND ALLOYS Russian patent published in 1997 - IPC

Abstract RU 2082817 C1

FIELD: nonferrous metallurgy. SUBSTANCE: large-size ingots of highly reactive metals and alloys, e. g. titanium ingots are heated at furnace temperature 900-1200 C for 7-15 h without preliminarily treating surface before deformation. As a result, dense dross layer is formed on the surface of ingot, which reliably protects pure metal layers against oxidation by atmospheric gases. EFFECT: reduced effort in surface treatment of ingots and increased their quality. 3 cl, 1 tbl

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RU 2 082 817 C1

Authors

Baranov V.A.

Dates

1997-06-27—Published

1994-04-27—Filed

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