Sintered iron-based alloy valve seat
AssigneeRiken
InventorsKimiaki Hashimoto, Hiroji Henmi
Life of this patent
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Abstract
An iron-based sintered alloy valve seat having excellent wear resistance and machinability, which can be used for high-power diesel engines, an intermetallic compound having Vickers hardness Hv of 800-1200 is used, and C and P in the composition of the iron-based sintered valve seat are by mass 1.2-1.6% and 0.80-1.35%, respectively.
Claims6
An iron-based sintered valve seat comprising 5-14% by volume of hard intermetallic compound particles having an average particle size of 5-200 μm and Vickers hardness Hv of 800-1200 dispersed in a matrix having a composition comprising C, Si, Cr, Mo, V and P, the balance being Fe and inevitable impurities;
- C and P being by mass 1.2-1.6% and 0.80-1.35%, respectively, based on said iron-based sintered valve seat.
Dependencies are inferred from the claim text.