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2 238 984

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IPC

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Application

2002131211/02, 2002-11-20

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Start date

2002-11-20

(22)

Actual filing date

2002-11-20

(45)

Published

2004-10-27

(72)

Inventor

Degaj A.S.Osetrov V.D.Kozlov V.N.Turchin S.I.Zasukhin A.L.Oblasov G.A.Lisienko V.G.Voronov G.V.

(73)

Holder

Oao Trubnyj Zavod"

METAL PURGING METHOD Russian patent published in 2004 - IPC

Abstract RU 2238984 C2

FIELD: processing of liquid metal outside furnace.

SUBSTANCE: method involves supplying gas through nozzles arranged in refractory stopper fixed in ladle bottom; exciting gas by providing elastic vibrations generated in vibration jet resonator; regulating vibration frequency by changing depth and volume of vibration resonator; determining depth of resonator from ratio: h_r=(K_r·b_vd_b-d_gb±b_v·K_r·hnrv-

)^l/n, where d_bis required diameter of gas bubble, micron; d_gb is initial diameter of gas bubble, micron; K_r, b_vare coefficients; h_rv is depth of vibration resonator corresponding to elastic vibration basic frequency, mm; n is extent factor.

EFFECT: uniform flowing of supplied gas over the entire section of purging apparatus and provision for producing gas flow with designed size of gas bubble, improved quality of metal and increased strength of purging stoppers.

1 dwg

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RU 2 238 984 C2

Authors

Degaj A.S.

Osetrov V.D.

Kozlov V.N.

Turchin S.I.

Zasukhin A.L.

Oblasov G.A.

Lisienko V.G.

Voronov G.V.

Dates

2004-10-27—Published

2002-11-20—Filed