基本信息:
- 专利标题： TITANIUM ENGINE VALVE
- 专利标题（中）：钛机VALVE
- 申请号：EP95928355.0 申请日：1995-08-09
- 公开(公告)号：EP0775253A1 公开(公告)日：1997-05-28
- 发明人： JETTE, Paul, M. , SOMMER, Alfred, W.
- 申请人： DEL WEST ENGINEERING, INC.
- 申请人地址： 24711 Avenue Rockefeller Valencia, CA 91355 US
- 专利权人： DEL WEST ENGINEERING, INC.
- 当前专利权人： DEL WEST ENGINEERING, INC.
- 当前专利权人地址： 24711 Avenue Rockefeller Valencia, CA 91355 US
- 代理机构： Thomson, Paul Anthony, et al
- 优先权： US19940289096 19940811
- 国际公布： WO1996005414 19960222
- 主分类号： B23K20
- IPC分类号： B23K20 ; B23P15 ; C22F1 ; F01L3
摘要：
A titanium engine valve (10) is fabricated with discrete head (10) and stem portions (15), preferably joined by inertia welding and/or diffusion bonding. The joint (32) between the head and stem portions is located well up on the valve stem so that it is not exposed below the valve guide (30). The head portion including a fillet region and lower stem region is composed of a first material comprising titanium, such as a conventional high strength titanium alloy. Alternatively, the head portion may consist of a cast or forged heat treated TIC. The stem portion which is not directly exposed to the hostile environment of the combustion chamber is composed of a second material comprising titanium, such as mill annealed titanium alloy rod stock. The resulting valve is, therefore, much less expensive to manufacture than a conventional titanium valve without sacrificing any mechanical characteristics in the portions of the valve subjected to high stress and temperature.