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2 110 587

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IPC

(21) (22)

Application

97100797/02, 1997-01-22

(22)

Actual filing date

1997-01-22

(45)

Published

1998-05-10

(72)

Inventor

Ajdinov A.M.Nastich V.P.Mindlin B.I.Chernikov V.G.Aksenov Ju.D.Cheglov A.E.Tsejtlin G.A.Surnin A.A.

(73)

Holder

Otkrytoe Aktsionernoe ObshchestvoAktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD FOR UTILIZATION OF PROTECTIVE ATMOSPHERE OF STRAND-TYPE FURNACE Russian patent published in 1998 - IPC

Abstract RU 2110587 C1

FIELD: gas-furnace heat engineering; may be used, mainly, in strand-type furnaces with protective atmosphere for steel annealing. SUBSTANCE: method includes supply of fresh protective atmosphere to chambers of heating and holding. Separation of a part of furnace atmosphere is carried out from holding chamber, and this part is mixed with fresh atmosphere in a definite ratio; content of hydrogen is determined in atmosphere mixture, and additionally supplied to mixture is 1.2-5.0% of pure hydrogen. Preliminarily cooled mixture is directed by means of compressor to heating chamber. EFFECT: provision of attaining the preset properties of metal after heat treatment and reduced consumption of fresh protective atmosphere. 1 dwg

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RU 2 110 587 C1

Authors

Ajdinov A.M.

Nastich V.P.

Mindlin B.I.

Chernikov V.G.

Aksenov Ju.D.

Cheglov A.E.

Tsejtlin G.A.

Surnin A.A.

Dates

1998-05-10—Published

1997-01-22—Filed