EP 3099834 B1 20171220 - A SPHEROIDAL GRAPHITE IRON FOR CYLINDER HEADS AND METHOD FOR MANUFACTURING IT
Title (en)
A SPHEROIDAL GRAPHITE IRON FOR CYLINDER HEADS AND METHOD FOR MANUFACTURING IT
Title (de)
KUGELFÖRMIGES GUSSEISEN FÜR ZYLINDERKÖPFE UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
FONTE A GRAPHITE SPHÉROÏDAL POUR CULASSES ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- FI 20145094 A 20140128
- FI 2015050044 W 20150126
Abstract (en)
[origin: WO2015114210A1] A spheroidal graphite iron for cylinder head of an internal combustion engine, the spheroidal graphite iron having a tensile strength in the range 350 – 480 Mpa and a thermal conductivity in the range 38 – 45 W/(K*m), and the composition in percentage by weight: 3,0 to 4,5% of carbon (C ), 0,9 to 1.75% silicon (Si), less than 0,8% manganese (Mn), less than 0,3% copper (Cu), 0,03 to 0,25% Vanadium (V), and 0,01 to 0,1% niobium (Nb), the rest being iron (Fe) and unavoidable impurities. The spheroidal graphite iron comprises a microstructure of at least 75 vol-% ferritic, which is precipitation hardened.
IPC 8 full level
C21D 5/00 (2006.01); C21D 6/02 (2006.01); C22C 33/08 (2006.01); C22C 37/04 (2006.01); C22C 37/10 (2006.01)
CPC (source: CN EP)
C21D 5/00 (2013.01 - CN EP); C21D 6/02 (2013.01 - EP); C22C 33/08 (2013.01 - EP); C22C 37/04 (2013.01 - CN EP); C22C 37/10 (2013.01 - CN EP); C21D 2211/005 (2013.01 - CN)
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)
WO 2015114210 A1 20150806; CN 105899694 A 20160824; CN 105899694 B 20190215; DK 3099834 T3 20180319; EP 3099834 A1 20161207; EP 3099834 B1 20171220
DOCDB simple family (application)
FI 2015050044 W 20150126; CN 201580003811 A 20150126; DK 15702298 T 20150126; EP 15702298 A 20150126