Global Patent Index - EP 3246426 A4

EP 3246426 A4 20180110 - THICK HIGH-TOUGHNESS HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Title (en)

THICK HIGH-TOUGHNESS HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Title (de)

DICKES HOCHROBUSTES HOCHFESTES STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG DAVON

Title (fr)

TÔLE D'ACIER ÉPAISSE DE HAUTE TÉNACITÉ ET DE HAUTE RÉSISTANCE, ET PROCÉDÉ DE FABRICATION DE CELLE-CI

Publication

EP 3246426 A4 20180110 (EN)

Application

EP 16737217 A 20160115

Priority

  • JP 2015006670 A 20150116
  • JP 2016000197 W 20160115

Abstract (en)

[origin: EP3246426A1] A technique for achieving high surface toughness and high strength and toughness of the inner part of a steel plate is provided. A thick-walled high-toughness high-strength steel plate is manufactured from steel having a particular composition and casted under conditions where the cooling rate of a surface during solidification is 1°C/s or less. The surface of the steel plate has a toughness (vE-40) of 70 J or more, and the steel plate has a thickness of 100 mm or more. The surface of the steel plate has high toughness, and the inner part of the steel plate has high strength and toughness.

IPC 8 full level

C22C 38/00 (2006.01); B21B 1/38 (2006.01); B21B 3/00 (2006.01); C21D 8/02 (2006.01); C22C 38/58 (2006.01)

CPC (source: EP KR US)

B21B 1/38 (2013.01 - KR); B21B 3/00 (2013.01 - KR); C21D 6/004 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP KR US); C22C 38/00 (2013.01 - US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); C22C 38/42 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/46 (2013.01 - EP KR US); C22C 38/48 (2013.01 - EP KR US); C22C 38/50 (2013.01 - EP US); C22C 38/54 (2013.01 - EP US); C22C 38/58 (2013.01 - EP KR US); B21B 1/024 (2013.01 - EP US); B21B 1/026 (2013.01 - EP US); B21B 3/00 (2013.01 - EP US); B21B 3/02 (2013.01 - EP US); B21B 2001/028 (2013.01 - EP US); C21D 7/13 (2013.01 - EP US); C21D 9/0081 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)

Citation (search report)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3246426 A1 20171122; EP 3246426 A4 20180110; EP 3246426 B1 20200624; CA 2969200 A1 20160721; CA 2969200 C 20200602; CN 107208212 A 20170926; CN 107208212 B 20200117; JP 6048626 B1 20161221; JP WO2016114146 A1 20170427; KR 101994784 B1 20190701; KR 20170095307 A 20170822; SG 11201704242T A 20170629; US 2017369958 A1 20171228; WO 2016114146 A1 20160721

DOCDB simple family (application)

EP 16737217 A 20160115; CA 2969200 A 20160115; CN 201680005979 A 20160115; JP 2016000197 W 20160115; JP 2016532648 A 20160115; KR 20177019203 A 20160115; SG 11201704242T A 20160115; US 201615543364 A 20160115