EP 1504831 B1 20090401 - METHOD FOR CONTINUOUS CASTING OF ALUMINUM KILLED STEEL
Title (en)
METHOD FOR CONTINUOUS CASTING OF ALUMINUM KILLED STEEL
Title (de)
STRANGGIESSENVERFAHREN VON ALUMINIUMBERUHIGTEM STAHL
Title (fr)
PROCEDE DE MOULAGE PAR COULEE CONTINUE D'UN ACIER CALME A L'ALUMINIUM
Publication
Application
Priority
- JP 0305558 W 20030430
- JP 2002128337 A 20020430
Abstract (en)
[origin: EP1504831A1] The present invention provides a technique of applying a CaO-containing material to a nozzle unit for casting of aluminum-killed steel, in such a manner that the amount of large-size alumina inclusions in slabs can be reduced irrespective of nozzle type, such as single-part type or multi-part type. The amount of large-size alumina inclusions in slabs obtained using a single-part type or multi-part type nozzle unit, which has an inner hole to be used for pouring molten steel from a tundish to a mold therethrough and CaO-containing refractories applied to a surface of the inner hole, has a strong correlation with the entire surface area of the inner hole of the nozzle unit and the amount of CaO contained in the employed refractories. According to the present invention, 50% or more of the entire surface area of the inner hole of the nozzle unit is formed of refractories containing 20 mass % or more of CaO to allow the amount of large-size alumina inclusions to be reduced. <IMAGE>
IPC 8 full level
B22D 11/10 (2006.01); B22D 41/50 (2006.01); B22D 11/00 (2006.01); B22D 41/54 (2006.01); C04B 35/03 (2006.01)
CPC (source: EP KR US)
B22D 11/00 (2013.01 - KR); B22D 11/10 (2013.01 - KR); B22D 41/54 (2013.01 - EP KR US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 1504831 A1 20050209; EP 1504831 A4 20050817; EP 1504831 B1 20090401; AU 2003235985 A1 20031117; BR 0309646 A 20050301; BR 0309646 B1 20121127; CN 1305602 C 20070321; CN 1649684 A 20050803; DE 60326948 D1 20090514; JP 2003320444 A 20031111; JP 4249940 B2 20090408; KR 100835398 B1 20080604; KR 20050006214 A 20050115; MX PA04010796 A 20050705; US 2005200057 A1 20050915; WO 03092929 A1 20031113
DOCDB simple family (application)
EP 03721000 A 20030430; AU 2003235985 A 20030430; BR 0309646 A 20030430; CN 03809629 A 20030430; DE 60326948 T 20030430; JP 0305558 W 20030430; JP 2002128337 A 20020430; KR 20047017476 A 20030430; MX PA04010796 A 20030430; US 51318605 A 20050105