Invention Grant
- Patent Title: Exhaust valve spindle for an exhaust valve in an internal combustion engine
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Application No.: US14819655Application Date: 2015-08-06
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Publication No.: US09714724B2Publication Date: 2017-07-25
- Inventor: Uffe Bihlet
- Applicant: MAN DIESEL & TURBO, FILIAL AF MAN DIESEL & TURBO SE, TYSKLAND
- Applicant Address: DK Copenhagen
- Assignee: MAN DIESEL & TURBO. FILIAL AF MAN DIESEL & TURBO SE. TYSKLAND
- Current Assignee: MAN DIESEL & TURBO. FILIAL AF MAN DIESEL & TURBO SE. TYSKLAND
- Current Assignee Address: DK Copenhagen
- Agency: Sughrue Mion, PLLC
- Priority: DK201270414 20120706
- Main IPC: B22F5/00
- IPC: B22F5/00 ; F16K41/00 ; F01L3/04 ; C22C19/05 ; C22F1/08 ; B22F3/15 ; C22C1/04

Abstract:
An exhaust valve spindle for an exhaust valve in an internal combustion engine has a shaft and a valve disc at the lower end of the shaft, which valve disc at its upper surface has a seat area. The seat area is of a seat material comprising at least from 34.0 to 44.0% Cr, an aggregate amount of Nb and Ta in the range from at least 2.8 to 6.1%, from 0.3 to 2.0% Ti, at the most 0.2% Al, at the most 0.04% B, at the most 0.8% Fe, at the most 0.04% C, at the most 0.4% Si, and a balance of Ni, where the amount of Ti+Nb+0.5×Ta is in the range from 3.4 to 6.6%, and where the amount of Nb+0.5×Ta is less than 3.0% if the amount of Ti is larger than 1.5%.
Public/Granted literature
- US20150337694A1 EXHAUST VALVE SPINDLE FOR AN EXHAUST VALVE IN AN INTERNAL COMBUSTION ENGINE Public/Granted day:2015-11-26
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