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IPC

(21) (22)

Application

98105300/02, 1998-03-23

(22)

Actual filing date

1998-03-23

(45)

Published

1999-06-27

(72)

Inventor

Titljanov A.E.Radjuk A.G.Koryshev A.N.Gnezdilov I.G.Kostin A.A.Saprykin N.I.Jarikov I.S.Kuznetsov A.E.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF PREPARING TUYERE OF BLAST FURNACE FOR OPERATION Russian patent published in 1999 - IPC

Abstract RU 2132391 C1

FIELD: metallurgy, namely, preparation of air tuyeres of blast furnaces for operation. SUBSTANCE: method comprises steps of applying aluminium containing coat onto outer sleeve and welded seams joining sleeve with mouth portion and flange by gasothermic deposition and annealing. Coat is deposited onto welded seams with thickness no less than 0.5 mm. Annealing is performed by heating tuyere with deposited coat together with furnace, soaking and cooling in furnace until 120-150 C and air cooling. Efficiency of tuyere preparation process is increased by 2-3 times. EFFECT: enhanced efficiency of method. 2 cl, 2 ex

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RU 2 132 391 C1

Authors

Titljanov A.E.

Radjuk A.G.

Koryshev A.N.

Gnezdilov I.G.

Kostin A.A.

Saprykin N.I.

Jarikov I.S.

Kuznetsov A.E.

Dates

1999-06-27—Published

1998-03-23—Filed