- 专利标题: Exhaust valve spindle for an exhaust valve in an internal combustion engine
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申请号: US14819655申请日: 2015-08-06
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公开(公告)号: US09714724B2公开(公告)日: 2017-07-25
- 发明人: Uffe Bihlet
- 申请人: MAN DIESEL & TURBO, FILIAL AF MAN DIESEL & TURBO SE, TYSKLAND
- 申请人地址: DK Copenhagen
- 专利权人: MAN DIESEL & TURBO. FILIAL AF MAN DIESEL & TURBO SE. TYSKLAND
- 当前专利权人: MAN DIESEL & TURBO. FILIAL AF MAN DIESEL & TURBO SE. TYSKLAND
- 当前专利权人地址: DK Copenhagen
- 代理机构: Sughrue Mion, PLLC
- 优先权: DK201270414 20120706
- 主分类号: B22F5/00
- IPC分类号: B22F5/00 ; F16K41/00 ; F01L3/04 ; C22C19/05 ; C22F1/08 ; B22F3/15 ; C22C1/04
摘要:
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%.
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