EP 2174734 A1 20100414 - HAMMERING VIBRATOR IN CONTINUOUS CASTING
Title (en)
HAMMERING VIBRATOR IN CONTINUOUS CASTING
Title (de)
HAMMERVIBRATOR FÜR STRANGGUSSVORGÄNGE
Title (fr)
VIBRATEUR À MARTELAGE POUR COULÉE CONTINUE
Publication
Application
Priority
- JP 2008063049 W 20080718
- JP 2007207039 A 20070808
Abstract (en)
PROBLEM: To effectively prevent the occurrence of segregation in a casting slab, even when the slab width is large. MEANS: Continuously performing soft reduction during continuous casting of a slab having a rectangular transverse cross section such that a solid fraction at center in a direction of thickness f S is at least 0.1-0.9 and a reduction ratio in a direction of slab thickness is within 1% per meter of length in a direction of casting, and continuously impacting both of the opposing sides of a narrow side of the slab 1 in a direction of slab width at at least one site where the solid fraction at center in the direction of thickness f S is within the range of 0.1-0.9, the impact being performed by using a block 3 disposed between paired pinch rolls 2a, 2b disposed adjacent to each other at a vibration frequency of impact of 4-12 Hz and an impact energy of 30-150 J. ADVANTAGEOUS EFFECTS: The occurrence of segregation such as center segregation and V-shape segregation is effectively prevented, even in a casting slab having a large slab width, thereby resulting in a casting slab with good internal quality.
IPC 8 full level
B22D 11/128 (2006.01); B22D 11/114 (2006.01); B22D 11/12 (2006.01)
CPC (source: EP)
B22D 11/114 (2013.01); B22D 11/12 (2013.01); B22D 11/1206 (2013.01)
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 MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2174734 A1 20100414; EP 2174734 A4 20170222; EP 2174734 B1 20180822; CN 101778682 A 20100714; CN 101778682 B 20121128; ES 2688943 T3 20181107; JP 5029694 B2 20120919; JP WO2009019969 A1 20101028; KR 101183420 B1 20120914; KR 20100033520 A 20100330; PL 2174734 T3 20190131; WO 2009019969 A1 20090212
DOCDB simple family (application)
EP 08791358 A 20080718; CN 200880102405 A 20080718; ES 08791358 T 20080718; JP 2008063049 W 20080718; JP 2009526381 A 20080718; KR 20107001599 A 20080718; PL 08791358 T 20080718