EP 3228721 A4 20180711 - HIGH-CARBON-STEEL WIRE ROD HAVING EXCELLENT WIRE DRAWING PROPERTIES
Title (en)
HIGH-CARBON-STEEL WIRE ROD HAVING EXCELLENT WIRE DRAWING PROPERTIES
Title (de)
STAHLDRAHTSTANGE MIT HOHEM KOHLENSTOFFANTEIL UND HERVORRAGENDER DRAHTZIEHBARKEITSEIGENSCHAFTEN
Title (fr)
FIL MACHINE EN ACIER À HAUTE TENEUR EN CARBONE PRÉSENTANT D'EXCELLENTES PROPRIÉTÉS DE TRÉFILAGE
Publication
Application
Priority
- JP 2014247258 A 20141205
- JP 2015083879 W 20151202
Abstract (en)
[origin: EP3228721A1] Provided is a high-carbon steel wire rod after hot rolling, having a steel composition comprising, in mass%, C: 0.60% to 1.10%, Si: 0.02% to 2.0%, Mn: 0.1% to 2.0%, Cr: 0.3% to 1.6%, Al: 0.001% to 0.05%, N: limited to 0.008% or less, P: limited to 0.020% or less, S: limited to 0.020% or less, and a balance: Fe and unavoidable impurities. The high-carbon steel wire rod has a structure containing 95% or more pearlite in an area ratio in a cross section perpendicular to a wire rod longitudinal direction, wherein an average lamellar spacing of the pearlite is 50 to 100 nm, and an average value of a pearlite block size of a central portion that is an area within a circle with a diameter of D/2 with respect to a diameter D of the wire rod from a center of a cross section perpendicular to a wire rod longitudinal direction is as follows, 5 µm < pearlite block size < 15 µm.
IPC 8 full level
C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/34 (2006.01); C22C 38/38 (2006.01)
CPC (source: EP KR)
C21D 8/06 (2013.01 - KR); C21D 8/065 (2013.01 - EP); C21D 9/52 (2013.01 - EP); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP KR); C22C 38/18 (2013.01 - EP); C22C 38/22 (2013.01 - EP KR); C22C 38/24 (2013.01 - EP); C22C 38/26 (2013.01 - EP KR); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP KR); C22C 38/34 (2013.01 - EP); C22C 38/38 (2013.01 - EP); C21D 2211/009 (2013.01 - EP KR)
Citation (search report)
- [E] EP 3150738 A1 20170405 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- [I] EP 2687619 A1 20140122 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- [A] JP H06271937 A 19940927 - KOBE STEEL LTD
- [A] US 4046600 A 19770906 - YAMAKOSHI NOBORU, et al
- [A] JP H0853737 A 19960227 - KOBE STEEL LTD
- [A] EP 2096184 A1 20090902 - KOBE STEEL LTD [JP]
- [A] EP 2554704 A1 20130206 - KOBE STEEL LTD [JP]
- See references of WO 2016088803A1
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 3228721 A1 20171011; EP 3228721 A4 20180711; CN 107208208 A 20170926; CN 107208208 B 20190823; JP 6394708 B2 20181003; JP WO2016088803 A1 20171005; KR 101952527 B1 20190226; KR 20170092630 A 20170811; MX 2017006990 A 20170824; WO 2016088803 A1 20160609
DOCDB simple family (application)
EP 15865720 A 20151202; CN 201580075308 A 20151202; JP 2015083879 W 20151202; JP 2016562658 A 20151202; KR 20177018113 A 20151202; MX 2017006990 A 20151202