EP 2343390 A4 20140625 - PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS
Title (en)
PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS
Title (de)
PERLITSCHIENE MIT HOHER ABRIEBFESTIGKEIT UND HERVORRAGENDER FESTIGKEIT
Title (fr)
RAIL DE PERLITE PRÉSENTANT UNE RÉSISTANCE À L'ABRASION SUPÉRIEURE ET UNE EXCELLENTE TÉNACITÉ
Publication
Application
Priority
- JP 2009005800 W 20091030
- JP 2008281847 A 20081031
Abstract (en)
[origin: EP2343390A1] This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P‰¤ 0.0150%; S‰¤ 0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 µm are present at an amount per unit area in a range of 10 to 200/mm 2 in a cross-section taken along a lengthwise direction in the pearlite structure.
IPC 8 full level
C22C 38/04 (2006.01); C21C 7/00 (2006.01); C21C 7/04 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21C 7/0025 (2013.01 - EP US); C21C 7/04 (2013.01 - KR); C21C 7/064 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP KR US); C22C 38/58 (2013.01 - KR)
Citation (search report)
- [XY] WO 2007111285 A1 20071004 - JFE STEEL CORP [JP], et al
- [Y] WO 2005085481 A1 20050915 - NIPPON STEEL CORP [JP], et al
- [A] JP 2005171327 A 20050630 - NIPPON STEEL CORP
- [A] JP 2004315928 A 20041111 - NIPPON STEEL CORP
- See references of WO 2010050238A1
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 2343390 A1 20110713; EP 2343390 A4 20140625; EP 2343390 B1 20150819; AU 2009308639 A1 20100506; AU 2009308639 B2 20150702; BR PI0918859 A2 20151201; BR PI0918859 B1 20210504; CA 2734980 A1 20100506; CA 2734980 C 20141021; CN 102137947 A 20110727; CN 102137947 B 20130320; ES 2550793 T3 20151112; JP 4757957 B2 20110824; JP WO2010050238 A1 20120329; KR 101263102 B1 20130509; KR 20110036758 A 20110408; PL 2343390 T3 20160129; RU 2461639 C1 20120920; US 2011155821 A1 20110630; WO 2010050238 A1 20100506
DOCDB simple family (application)
EP 09823351 A 20091030; AU 2009308639 A 20091030; BR PI0918859 A 20091030; CA 2734980 A 20091030; CN 200980133727 A 20091030; ES 09823351 T 20091030; JP 2009005800 W 20091030; JP 2010535687 A 20091030; KR 20117004501 A 20091030; PL 09823351 T 20091030; RU 2011110256 A 20091030; US 200913061001 A 20091030