EP 1529852 B1 20081231 - MATERIAL FOR SLIDING PARTS HAVING SELF-LUBRICITY AND WIRE MATERIAL FOR PISTON RING
Title (en)
MATERIAL FOR SLIDING PARTS HAVING SELF-LUBRICITY AND WIRE MATERIAL FOR PISTON RING
Title (de)
MATERIAL FÜR GLEITBAUTEILE MIT SELBSTSCHMIERUNG UND DRAHTMATERIAL FÜR KOLBENRING
Title (fr)
MATERIAU POUR PIECES COULISSANTES AUTO-LUBRIFIANTES ET MATERIAU EN FIL POUR SEGMENT DE PISTON
Publication
Application
Priority
- JP 0308309 W 20030630
- JP 2002191722 A 20020701
Abstract (en)
[origin: EP1529852A1] A material for use as self-lubricating sliding parts, which consists of a steel containing, by mass, from not less than 0.4 % to less than 1.5 % of C (carbon), 0.1 to 3.0 % of Si, 0.1 to 3.0 % of Mn, from inclusive zero to 0.5 % of Cr, 0.05 to 3.0 % of Ni, 0.3 to 2.0 % of Al, 0.3 to 20 % in total (Mo + W + V) of at least one element selected from the group consisting of Mo, W (tungsten) and V (vanadium), and 0.05 to 3.0 % of Cu, wherein there can be observed graphite particles having an average particle size of not more than 3 mu m in a section of the metal structure of the steel. The steel is also used as piston rings. In the steel, the graphite particles observed in the structural section occupy an area rate of not less than 1 % in the overall area of the structural section, and have an average particle size of not more than 3 mu m. The steel may further contain not more than 0.3 % of S and/or not more than 0.01 % of Ca. The steel is subjected to nitriding treatment for use. <IMAGE>
IPC 8 full level
C21D 1/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/34 (2006.01); C22C 38/44 (2006.01); C22C 38/58 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C22C 1/00 (2013.01 - KR); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/08 (2013.01 - EP KR US); C22C 38/12 (2013.01 - EP KR US); C22C 38/34 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP KR US); C22C 38/60 (2013.01 - EP KR US)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 1529852 A1 20050511; EP 1529852 A4 20060913; EP 1529852 B1 20081231; AU 2003244199 A1 20040119; CN 1327025 C 20070718; CN 1665950 A 20050907; DE 60325602 D1 20090212; JP 4273462 B2 20090603; JP WO2004003246 A1 20051027; KR 100701812 B1 20070402; KR 20050014896 A 20050207; US 2006048865 A1 20060309; WO 2004003246 A1 20040108
DOCDB simple family (application)
EP 03761840 A 20030630; AU 2003244199 A 20030630; CN 03815631 A 20030630; DE 60325602 T 20030630; JP 0308309 W 20030630; JP 2004517335 A 20030630; KR 20047021503 A 20030630; US 51998105 A 20050103