EP 3633051 A4 20200408 - METHOD FOR MANUFACTURING HIGH MANGANESE STEEL INGOT
Title (en)
METHOD FOR MANUFACTURING HIGH MANGANESE STEEL INGOT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON STAHLBLÖCKEN MIT HOHEM MANGANGEHALT
Title (fr)
PROCÉDÉ DE FABRICATION D'UN LINGOT D'ACIER À HAUTE TENEUR EN MANGANÈSE
Publication
Application
Priority
- JP 2017103666 A 20170525
- JP 2018019526 W 20180521
Abstract (en)
[origin: EP3633051A1] Provided is a method for refining a high manganese steel by which when refining a high manganese steel containing 5% by mass or more of manganese, high manganese yield can be obtained, and high productivity can be performed. The method includes, when refining a steel containing 5% by mass or more of manganese, a decarburization step (step S100) of performing a decarburization treatment on a hot metal (molten metal (2)) in a converter (1) to make the hot metal into a molten steel (molten metal (2)) having a low carbon concentration, a reduction step (step S102) of performing a reduction treatment on the molten steel by adding a manganese source and a silicon source to the molten steel kept in the converter (1) after the decarburization step, and a degassing step (step S104) of performing a vacuum degassing treatment on the molten steel by a vacuum degassing device (5) after the reduction step, in which, in the reduction step, the manganese source is added in accordance with a target manganese concentration in the steel, and the silicon source is added so as to satisfy Formula (1).
IPC 8 full level
C21C 1/00 (2006.01); C21C 5/28 (2006.01); C21C 7/00 (2006.01); C21C 7/06 (2006.01); C21C 7/068 (2006.01); C21C 7/10 (2006.01)
CPC (source: EP KR)
C21C 1/00 (2013.01 - EP); C21C 5/28 (2013.01 - EP); C21C 7/0068 (2013.01 - KR); C21C 7/06 (2013.01 - EP); C21C 7/064 (2013.01 - KR); C21C 7/068 (2013.01 - EP); C21C 7/10 (2013.01 - EP KR)
Citation (search report)
- [XI] US 2016053350 A1 20160225 - HAN WOONG-HEE [KR], et al
- [XI] US 2011000339 A1 20110106 - ROSE LUTZ [DE], et al
- [A] EP 0714989 A1 19960605 - NIPPON STEEL CORP [JP]
- [A] DONG SIK KIM ET AL: "IMPROVEMENT OF CLEANLINESS OF 16 % CR FERRITIC STAINLESS STEEL IN AOD PROCESSES//AMELIORATION DE LA PROPRETE D'ACIER INOXYDABLE FERRITIQUE A 16 % DE CR AU CONVERTISSEUR AOD", REVUE DE METALLURGIE- CAHIERS D'INFORMATIONS TECHNIQUES,, vol. 101, no. 4, 1 April 2004 (2004-04-01), pages 291 - 299, XP001196043, ISSN: 0035-1563
- See references of WO 2018216660A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3633051 A1 20200408; EP 3633051 A4 20200408; EP 3633051 B1 20211117; CN 110621793 A 20191227; JP 6551626 B2 20190731; JP WO2018216660 A1 20190627; KR 102315999 B1 20211021; KR 20190142355 A 20191226; TW 201900897 A 20190101; TW I685577 B 20200221; WO 2018216660 A1 20181129
DOCDB simple family (application)
EP 18806216 A 20180521; CN 201880032038 A 20180521; JP 2018019526 W 20180521; JP 2019506740 A 20180521; KR 20197033815 A 20180521; TW 107117640 A 20180524