EP 2371468 B1 20181017 - CONTINUOUS CASTING METHOD OF STEEL
Title (en)
CONTINUOUS CASTING METHOD OF STEEL
Title (de)
STRANGGIESSVERFAHREN FÜR STAHL
Title (fr)
PROCÉDÉ DE COULÉE CONTINUE D'ACIER
Publication
Application
Priority
- JP 2009068462 W 20091028
- JP 2008330188 A 20081225
Abstract (en)
[origin: EP2371468A1] A continuous casting method of steel is provided that can reduce segregation and center porosity by causing a slab to undergo impact vibration under optimum conditions. In the continuous casting method of steel in which a slab having a rectangular cross section is cast while causing vibration in the slab with liquid core by disposing impact-vibration equipments on both short side surfaces of slab and continuously impacting those surfaces, the method includes the steps of: adjusting a vibration energy, a distance between shafts of adjacent guide rolls and a liquid core thickness, so that, among intersections generated by the impacting of the short side surface, between a curve of displacement ´(x) of the long side slab surface in a slab thickness-wise direction as defined by the following formulas (1) and (2) and a straight line ´(x) = 0.10 mm, a distance from an impact position of the intersection farther away from the coordinate origin is at least 200 mm; and impacting the short side, ´ x = exp - 1.5 × ln x / 200 × ”R / ”R 0 0.587 2 × ´max ´max = L 0 × E / E 0 0.5 × ”R / ”R 0 × t / t 0 0.446
IPC 8 full level
B22D 11/128 (2006.01); B22D 11/16 (2006.01); B22D 11/20 (2006.01)
CPC (source: EP KR)
B22D 11/114 (2013.01 - EP); B22D 11/1206 (2013.01 - EP); B22D 11/128 (2013.01 - EP KR); B22D 11/16 (2013.01 - EP KR); B22D 11/20 (2013.01 - EP KR)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2371468 A1 20111005; EP 2371468 A4 20170517; EP 2371468 B1 20181017; CN 102264490 A 20111130; CN 102264490 B 20130109; ES 2702700 T3 20190305; JP 2010149150 A 20100708; JP 5272720 B2 20130828; KR 101271331 B1 20130604; KR 20110084540 A 20110725; PL 2371468 T3 20190531; TW 201026410 A 20100716; TW I406721 B 20130901; WO 2010073813 A1 20100701
DOCDB simple family (application)
EP 09834617 A 20091028; CN 200980152360 A 20091028; ES 09834617 T 20091028; JP 2008330188 A 20081225; JP 2009068462 W 20091028; KR 20117013822 A 20091028; PL 09834617 T 20091028; TW 98138988 A 20091117