EP 3332889 B1 20201209 - CONTINUOUS CASTING METHOD FOR SLAB CASTING PIECE
Title (en)
CONTINUOUS CASTING METHOD FOR SLAB CASTING PIECE
Title (de)
STRANGGIESSVERFAHREN FÜR BRAMMENGIESSSTÜCK
Title (fr)
PROCÉDÉ DE COULÉE CONTINUE POUR PIÈCE DE COULÉE DE TYPE BRAME
Publication
Application
Priority
- JP 2015182787 A 20150916
- JP 2016143908 A 20160722
- JP 2016004124 W 20160912
Abstract (en)
[origin: EP3332889A1] A continuous casting method by which a high quality slab can be produced is provided. In the continuous casting method, an immersion nozzle is placed in a continuous casting mold, and casting is performed by supplying molten steel to the immersion nozzle. The immersion nozzle has a pair of discharge openings that are arranged symmetrically about a vertical axis of the immersion nozzle. An immersion depth is greater than or equal to 180 mm and less than 300 mm. A molten-steel discharge angle is in the range from 15 to 35°. The ratio A/P of a flow rate A of injected inert gas to a molten steel throughput P is in the range from 2.0 to 3.5 NL/ton. A discharge direction of the immersion nozzle is inclined with respect to a reference plane, which passes through a vertical axial center of the immersion nozzle and which is parallel to mold long side surfaces, in the range of Equation (1): ¸ ˆ’ 6 ‰¤ ± ‰¤ ¸ + 10 In Equation (1), ± is an inclination angle with respect to the reference plane and ¸ is an angle defined by Equation (2) : tan¸ = D / 2 / W / 2 In Equation (2), D is a thickness of the slab and W is a width of the slab.
IPC 8 full level
B22D 11/115 (2006.01); B22D 11/10 (2006.01); B22D 11/11 (2006.01); B22D 11/12 (2006.01)
CPC (source: EP KR)
B22D 11/10 (2013.01 - EP); B22D 11/115 (2013.01 - EP KR); B22D 11/117 (2013.01 - KR)
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
DOCDB simple family (publication)
EP 3332889 A1 20180613; EP 3332889 A4 20181003; EP 3332889 B1 20201209; BR 112018004704 A2 20180925; BR 112018004704 B1 20221011; CN 108025354 A 20180511; CN 108025354 B 20200707; JP 6115690 B1 20170419; JP WO2017047058 A1 20170914; KR 102088117 B1 20200311; KR 20180039686 A 20180418; TW 201716162 A 20170516; TW I599417 B 20170921; WO 2017047058 A1 20170323
DOCDB simple family (application)
EP 16845932 A 20160912; BR 112018004704 A 20160912; CN 201680052423 A 20160912; JP 2016004124 W 20160912; JP 2016568067 A 20160912; KR 20187006856 A 20160912; TW 105130015 A 20160914