EP 2791379 A1 20141022 - ROLLER BEARING COMPONENT
Title (en)
ROLLER BEARING COMPONENT
Title (de)
WÄLZLAGERKOMPONENTE
Title (fr)
COMPOSANT DE ROULEMENT
Publication
Application
Priority
- DE 102011088234 A 20111212
- EP 2012073179 W 20121121
Abstract (en)
[origin: WO2013087379A1] An embodiment of a component (100) comprises at least one section (110) which comprises a steel where the section (110) extends from a surface (120) of the component (100) into an interior of the component (100), and an outer zone (130) in the section (110) which directly adjoins the surface (120) of the component (100) and in which a proportion of a chemical element changes in a measurable way in the steel. The steel in the outer zone (130) has, at least in sections, a microstructure having grains having an index of 5 or above in accordance with ASTM-E 112 (2010 edition), where the steel has a proportion of chromium which is not more than 7% by weight and the steel additionally comprises tantalum in a proportion by weight of more than 0.4% by weight, niobium in a proportion by weight of more than 0.1% by weight, titanium in a proportion by weight of more than 0.12% by weight or vanadium in a proportion by weight of more than 0.05% by weight. Such a component (100) can thus have a smaller grain size after a heat treatment in the course of its production.
IPC 8 full level
C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (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); C23C 8/20 (2006.01); C23C 8/24 (2006.01); C23C 8/28 (2006.01); F16C 33/00 (2006.01); F16C 33/62 (2006.01)
CPC (source: EP)
C21D 1/06 (2013.01); C21D 9/36 (2013.01); C21D 9/38 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C23C 8/22 (2013.01); C23C 8/32 (2013.01); F16C 33/62 (2013.01); C21D 2221/02 (2013.01); C21D 2221/10 (2013.01); F16C 19/364 (2013.01); F16C 2204/62 (2013.01); F16C 2300/14 (2013.01)
Citation (search report)
See references of WO 2013087379A1
Citation (examination)
- DE 102005053047 B3 20070823 - SKF AB [SE]
- DE 112008001331 T5 20100422 - NTN TOYO BEARING CO LTD [JP]
- J. GEGNER: "SimCarb - Eine leistungsfähige Windows-Expertensoftware für das rechnergestützte Einsatzhärten ?", HTM JOURNAL OF HEAT TREATMENT AND MATERIALS - ZEITSCHRIFT FUER WERKSTOFFE WAERMEBEHANDLUNG FERTIGUNG., vol. 64, no. 1, 1 February 2009 (2009-02-01), DE, pages 53 - 62, XP055321535, ISSN: 1867-2493, DOI: 10.3139/105.110002
- SPIEKERMANN P: "Alloys - a special problem of patent law", NONPUBLISHED ENGLISH TRANSLATION OF DOCUMENT, 31 December 2000 (2000-12-31), pages 1 - 20, XP002184689
- ASHLEY G: "Patentability of alloys at the European Patent Office", INTELLECTUAL PROPERTY, BIRMINGHAM, GB, vol. 2, no. 3, 1 May 1997 (1997-05-01), pages 3 - 6, XP007922941, ISSN: 1361-5793
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)
DE 102011088234 A1 20130613; EP 2791379 A1 20141022; WO 2013087379 A1 20130620
DOCDB simple family (application)
DE 102011088234 A 20111212; EP 12794909 A 20121121; EP 2012073179 W 20121121