EP 1307305 A1 20030507 - METHOD AND STRAND GUIDE FOR SUPPORTING, GUIDING AND COOLING CASTING STRANDS MADE OF STEEL, ESPECIALLY PRELIMINARY SECTIONS FOR GIRDERS
Title (en)
METHOD AND STRAND GUIDE FOR SUPPORTING, GUIDING AND COOLING CASTING STRANDS MADE OF STEEL, ESPECIALLY PRELIMINARY SECTIONS FOR GIRDERS
Title (de)
VERFAHREN UND STRANGFÜHRUNG ZUM STÜTZEN, FÜHREN UND KÜHLEN VON GIESSSTRÄNGEN AUS STAHL, INSBESONDERE VON VORPROFILEN FÜR TRÄGER
Title (fr)
PROCEDE ET SYSTEME DE GUIDAGE POUR SOUTENIR, GUIDER ET REFROIDIR DES BARRES DE COULEE EN ACIER, NOTAMMENT DES EBAUCHES DE PROFILES POUR DES POUTRES
Publication
Application
Priority
- DE 10039033 A 20000810
- DE 10133093 A 20010711
- EP 0109092 W 20010807
Abstract (en)
[origin: WO0211923A1] A method and strand guide for supporting, guiding and cooling casting strands (1) made of steel, especially preliminary sections (2) for girders, which are cooled by injected water (29) and are drawn. The inventive method prevents cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand during secondary cooling. Undercooling of the chill of the strand is prevented by adapting the cooling and support of the beam blank format to the solidification range in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas so that cooling and support are provided exclusively where a crater is formed. The casting strand (1) is cooled by guiding the temperature in a specific manner in upper supporting segments (5, 6, 7) by means of injected water jets whose width at least matches the length of the supporting rollers on longitudinal and transversal sides (13, 14) of the cross section (1a) of the casting strand, and is decreasingly supported in an analogous manner with respect to the length of the casting path and the cooling state in core areas (15) of the cross section (1a) of the casting strand on the transversal sides (14) of said casting strand cross section (1a) and cooling occurs exclusively by means of water jets (8) which are oriented towards said core areas (15).
IPC 1-7
IPC 8 full level
B22D 11/00 (2006.01); B22D 11/124 (2006.01); B22D 11/128 (2006.01)
CPC (source: EP)
B22D 11/009 (2013.01); B22D 11/124 (2013.01); B22D 11/1282 (2013.01)
Citation (search report)
See references of WO 0211923A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0211923 A1 20020214; AT E288332 T1 20050215; AU 8587701 A 20020218; CA 2419069 A1 20030205; CA 2419069 C 20090120; CN 1241700 C 20060215; CN 1446132 A 20031001; EP 1307305 A1 20030507; EP 1307305 B1 20050202; ES 2236296 T3 20050716; JP 2004505775 A 20040226
DOCDB simple family (application)
EP 0109092 W 20010807; AT 01965178 T 20010807; AU 8587701 A 20010807; CA 2419069 A 20010807; CN 01813959 A 20010807; EP 01965178 A 20010807; ES 01965178 T 20010807; JP 2002517246 A 20010807