JPS5584808A - Valve seat and valve - Google Patents
Valve seat and valveInfo
- Publication number
- JPS5584808A JPS5584808A JP16063578A JP16063578A JPS5584808A JP S5584808 A JPS5584808 A JP S5584808A JP 16063578 A JP16063578 A JP 16063578A JP 16063578 A JP16063578 A JP 16063578A JP S5584808 A JPS5584808 A JP S5584808A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hard
- hard phase
- phase
- hardness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To improve wear-resisting property and strength of valve, by making the contact area of the valve and valve seat with an iron type sintered alloy including one or more hard-phase forming elements, and selecting hardness, size and quantity of the hard phase and the overall hardness respectively within a specific range.
CONSTITUTION: Contact area of valve seat and/or valve is made of iron type sintered alloy which includes one or more hard-phase forming elements. Here, it is required that hardness of the hard phase is within the range of HV800W1800 and its quantity is 5W70% by area ratio. As the size of the hard phase, more than 70% of the entire particles constituting the hard phase have sizes of 1W150μ. It is required further that the hard phase has a void ratio of 0.5W30% and its overall hardness is HRC25W50. With such an arrangement, sufficient wear-resisting and heat-resisting property is given to the valve if it is used in a diesel engine which is operated under severe operational conditions. Further, since padding of stellite alloy or the like is not required, such a valve can be manufactured economically and with high productivity.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16063578A JPS5584808A (en) | 1978-12-21 | 1978-12-21 | Valve seat and valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16063578A JPS5584808A (en) | 1978-12-21 | 1978-12-21 | Valve seat and valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5584808A true JPS5584808A (en) | 1980-06-26 |
JPS6246602B2 JPS6246602B2 (en) | 1987-10-02 |
Family
ID=15719182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16063578A Granted JPS5584808A (en) | 1978-12-21 | 1978-12-21 | Valve seat and valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5584808A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57203753A (en) * | 1981-06-09 | 1982-12-14 | Nippon Piston Ring Co Ltd | Abrasion resistant member for internal combustion engine |
-
1978
- 1978-12-21 JP JP16063578A patent/JPS5584808A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57203753A (en) * | 1981-06-09 | 1982-12-14 | Nippon Piston Ring Co Ltd | Abrasion resistant member for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPS6246602B2 (en) | 1987-10-02 |
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