EP 1434889 A4 20050126 - HIGH-HARDNESS, HIGHLY DUCTILE FERROUS ARTICLES
Title (en)
HIGH-HARDNESS, HIGHLY DUCTILE FERROUS ARTICLES
Title (de)
EISENGEGENDSTÄNDE MIT HOHER HÄRTE UND HOHER DUKTILITÄT
Title (fr)
ARTICLES FERREUX A HAUTE DURETE ET HAUTE DUCTILITE
Publication
Application
Priority
- US 0232267 W 20021010
- US 97716701 A 20011012
Abstract (en)
[origin: US2003070736A1] Ferrous articles are austenitized, then converted to at least 60% bainite, and the balance substantially converted to martensite; the articles are then cold worked, preferably by both compression and tensile deformation to at least 60% yield strength. The articles have improved serviceability, particularly fatigue life.
IPC 1-7
IPC 8 full level
C21D 7/06 (2006.01); B21L 15/00 (2006.01); C21D 1/20 (2006.01); C21D 1/56 (2006.01); C21D 1/78 (2006.01); C21D 9/00 (2006.01); C21D 7/02 (2006.01)
CPC (source: EP KR US)
B21L 15/00 (2013.01 - EP US); B21L 15/005 (2013.01 - EP US); C21D 1/20 (2013.01 - EP US); C21D 8/00 (2013.01 - KR); C21D 9/0087 (2013.01 - EP US); C21D 7/02 (2013.01 - EP US); C21D 9/0093 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Citation (search report)
- [A] EP 0745696 A1 19961204 - BLOUNT INC [US]
- [A] US 3854363 A 19741217 - MERKELL K, et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 0102, no. 52 (C - 369) 29 August 1986 (1986-08-29)
- See references of WO 03031660A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
US 2003070736 A1 20030417; BR 0206274 A 20040113; CN 1491286 A 20040421; EP 1434889 A1 20040707; EP 1434889 A4 20050126; JP 2005505689 A 20050224; KR 20040036873 A 20040503; MX PA03004326 A 20040504; RU 2003117005 A 20050120; US 2003070737 A1 20030417; WO 03031660 A1 20030417
DOCDB simple family (application)
US 97716701 A 20011012; BR 0206274 A 20021010; CN 02804873 A 20021010; EP 02782137 A 20021010; JP 2003534629 A 20021010; KR 20037007721 A 20030610; MX PA03004326 A 20021010; RU 2003117005 A 20021010; US 0232267 W 20021010; US 26864402 A 20021010