EP 3988678 B1 20231206 - WIRE ROD
Title (en)
WIRE ROD
Title (de)
WALZDRAHT
Title (fr)
FIL MACHINE
Publication
Application
Priority
- JP 2019113720 A 20190619
- JP 2020024248 W 20200619
Abstract (en)
[origin: EP3988678A1] This wire rod has a predetermined chemical composition, satisfies the following (1) to (3), contains a pearlite structure having 90% or more of a metal structure, and satisfies the following (4) in a case in which a value of a Vickers hardness at a surface layer portion for each sample is HV<sub>si</sub> with respect to each of eight samples si collected at arbitrary equal intervals in a longitudinal direction of the wire rod, and an average value and maximum value of HV<sub>si</sub> are respectively Hv<sub>siave</sub> and Hv<sub>simax</sub>: Cu/Ni>1.001.70≤Y1≤4.50Y1=3×Cr+5×Mn+Cu+NiY2<1.81Y2=C+Si/10+AA satisfies A = a in a case in which a value of a = 350 × ([N] - 0.29 × [Ti]) satisfies a ≥ 0, and A = 0 in a case in which the value satisfies a < 0 Hvsimax−Hvsiave≤50.
IPC 8 full level
C21D 8/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C21D 1/32 (2006.01); C21D 1/46 (2006.01); C21D 1/48 (2006.01); C21D 1/56 (2006.01); C21D 1/607 (2006.01)
CPC (source: CN EP)
C22C 38/001 (2013.01 - CN); C22C 38/002 (2013.01 - CN EP); C22C 38/005 (2013.01 - CN EP); C22C 38/008 (2013.01 - CN EP); C22C 38/02 (2013.01 - CN EP); C22C 38/04 (2013.01 - CN EP); C22C 38/06 (2013.01 - CN); C22C 38/08 (2013.01 - CN EP); C22C 38/12 (2013.01 - CN EP); C22C 38/14 (2013.01 - CN EP); C22C 38/16 (2013.01 - CN EP); C22C 38/34 (2013.01 - CN); C22C 38/40 (2013.01 - CN); C22C 38/42 (2013.01 - CN EP); C22C 38/44 (2013.01 - CN); C22C 38/46 (2013.01 - CN); C22C 38/48 (2013.01 - CN); C22C 38/50 (2013.01 - CN EP); C22C 38/54 (2013.01 - CN EP); C21D 1/32 (2013.01 - EP); C21D 1/46 (2013.01 - EP); C21D 1/48 (2013.01 - EP); C21D 1/56 (2013.01 - EP); C21D 1/607 (2013.01 - EP); C21D 8/065 (2013.01 - EP); C21D 2211/009 (2013.01 - EP)
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 3988678 A1 20220427; EP 3988678 A4 20220706; EP 3988678 B1 20231206; CN 113748224 A 20211203; CN 113748224 B 20220503; JP 7226548 B2 20230221; JP WO2020256140 A1 20201224; WO 2020256140 A1 20201224
DOCDB simple family (application)
EP 20827854 A 20200619; CN 202080032029 A 20200619; JP 2020024248 W 20200619; JP 2021526947 A 20200619