CASTING FACILITY AND CASTING METHOD

Title:

CASTING FACILITY AND CASTING METHOD

Document Type and Number:

WIPO Patent Application WO/2019/031661

Kind Code:

A1

Abstract:

A method for casting slabs, according to the present invention, comprises the steps of: respectively positioning, at the upper part of a tundish and the outside of the tundish, ladles having molten steel accommodated therein; carrying out casting by supplying, to the tundish, the molten steel of the ladle arranged at the casting position of the upper part of the tundish; and blowing an inert gas into the ladle arranged at the casting position. Therefore, according to an embodiment of the present invention, the inert gas is blown when the ladle is in a stand-by position on a turret apparatus and during casting in which molten steel is supplied to the tundish. Thus, inclusions can be more reduced than those in a conventional casting method, and clean steel can be manufactured. That is, the generation of inclusions in the air can be reduced by carrying out micro-bubbling after opening the ladle when the ladle is in the stand-by position. In addition, the inclusions of the molten steel within the ladle during casting can be reduced by blowing the inert gas into the ladle (L) during casting.

Inventors:

KIM SUNG JOOL (KR)
KIM WOOK (KR)
LEE YOUNG JU (KR)
KIM YONG HWAN (KR)
KIM SEONG YEON (KR)

Application Number:

PCT/KR2017/015035

Publication Date:

February 14, 2019

Filing Date:

December 19, 2017

Export Citation:

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Assignee:

POSCO (KR)

International Classes:

B22D11/18; B22D11/117

Foreign References:

KR20090059928A	2009-06-11
US4506814A	1985-03-26
CN102126000A	2011-07-20
KR20150006859A	2015-01-19
KR20090126625A	2009-12-09
KR19980033102A	1998-07-25
KR200332894Y1	2003-11-10

Other References: