Title:
METHOD FOR MANUFACTURE OF ULTRA-LOW CARBON STEEL SLAB
Document Type and Number:
WIPO Patent Application WO/2007/049824
Kind Code:
A1
Abstract:
Disclosed is a method for manufacture of an ultra-low carbon steel slab, which
comprises the steps of: adding Ti to a molten steel that has been decarbonated
to a degree of 0.01% by mass in terms of a carbon concentration and then further
adding at least one element selected from Ce, La and Nd to the mixture; injecting
the mixed molten steel from a tundish into a mold using an immersion nozzle under
such conditions where an Ar gas is blown from an ambient point located between
a nozzle on the tundish and an ejection hole of the immersion nozzle at a gas flow
rate of 3 Nl (normal litters)/min or less; and performing casting continuously.
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Inventors:
MIYAZAKI MASAFUMI (JP)
MATSUZAWA AKIHIRO (JP)
SASAI KATSUHIRO (JP)
OHASHI WATARU (JP)
OHTANI YASUHIKO (JP)
YAMADA KATSUNORI (JP)
DOKI MASAHIRO (JP)
HIRATA GO (JP)
KIMURA YOSHIAKI (JP)
HASEGAWA HAJIME (JP)
MATSUZAWA AKIHIRO (JP)
SASAI KATSUHIRO (JP)
OHASHI WATARU (JP)
OHTANI YASUHIKO (JP)
YAMADA KATSUNORI (JP)
DOKI MASAHIRO (JP)
HIRATA GO (JP)
KIMURA YOSHIAKI (JP)
HASEGAWA HAJIME (JP)
Application Number:
PCT/JP2006/322048
Publication Date:
May 03, 2007
Filing Date:
October 27, 2006
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
MIYAZAKI MASAFUMI (JP)
MATSUZAWA AKIHIRO (JP)
SASAI KATSUHIRO (JP)
OHASHI WATARU (JP)
OHTANI YASUHIKO (JP)
YAMADA KATSUNORI (JP)
DOKI MASAHIRO (JP)
HIRATA GO (JP)
KIMURA YOSHIAKI (JP)
HASEGAWA HAJIME (JP)
MIYAZAKI MASAFUMI (JP)
MATSUZAWA AKIHIRO (JP)
SASAI KATSUHIRO (JP)
OHASHI WATARU (JP)
OHTANI YASUHIKO (JP)
YAMADA KATSUNORI (JP)
DOKI MASAHIRO (JP)
HIRATA GO (JP)
KIMURA YOSHIAKI (JP)
HASEGAWA HAJIME (JP)
International Classes:
B22D11/00; B22D11/10; C21C7/04
Foreign References:
| JP2005060734A | 2005-03-10 | |||
| JPH09225604A | 1997-09-02 | |||
| JPH11123509A | 1999-05-11 | |||
| JP2000126849A | 2000-05-09 | |||
| JP2002239690A | 2002-08-27 | |||
| JP2001347348A | 2001-12-18 | |||
| JP2000343188A | 2000-12-12 | |||
| JP2002338347A | 2002-11-27 | |||
| JP2002035904A | 2002-02-05 | |||
| JP2001239351A | 2001-09-04 | |||
| JP2002088412A | 2002-03-27 | |||
| JP2003049218A | 2003-02-21 | |||
| JP2003268435A | 2003-09-25 | |||
| JP2005060734A | 2005-03-10 | |||
| JP2005139492A | 2005-06-02 | |||
| JPH11343516A | 1999-12-14 | |||
| JPS60180654A | 1985-09-14 |
Other References:
See also references of EP 1952913A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg., 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, JP)
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