CN204299642U - A kind of engine and exhaust valve thereof - Google Patents
A kind of engine and exhaust valve thereof Download PDFInfo
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- CN204299642U CN204299642U CN201420476950.7U CN201420476950U CN204299642U CN 204299642 U CN204299642 U CN 204299642U CN 201420476950 U CN201420476950 U CN 201420476950U CN 204299642 U CN204299642 U CN 204299642U
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- exhaust valve
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Abstract
This application discloses a kind of exhaust valve of engine, comprise valve stem and head portion that, the material of described head portion that is high temperature corrosion-resisting nickel alloy steel.In the exhaust valve of the engine that the utility model provides, the nickel alloy steel of the material selection high temperature corrosion-resisting of head portion that, has good wearability under the condition of high temperature, good intensity corrosion resistance and thermohardening; And there is higher elevated temperature strength, good anti-oxidant and corrosion resistance, the combination properties such as good fatigue behaviour, fracture toughness.Compared with existing material, substantially increase operating temperature and the fatigue resistance of exhaust valve, meet the requirement of heavy-duty engine.The invention also discloses a kind of engine applying above-mentioned exhaust valve.
Description
Technical field
The utility model relates to technical field of engines, particularly a kind of exhaust valve of engine.Also relate to a kind of engine of this exhaust valve of application.
Background technology
Exhaust valve is the vitals in engine, for being discharged by the waste gas in combustion chamber and dispelling the heat.The material of existing exhaust valve adopts 40Cr, 4Cr9Si2,4Cr10Si2Mo, 21-4N and 23-8N etc. usually.But these materials can only meet the requirement of low-powered engine, and the requirement of heavy-duty engine to operating temperature and fatigue resistance can not be met, the operating temperature of the exhaust valve of heavy-duty engine, more than 750 DEG C, adopts existing exhaust valve often to occur the Problem of Failure that head portion that drops or part drops.
Therefore, how to solve the performance requirement that existing exhaust valve cannot meet heavy-duty engine, become those skilled in the art's problem demanding prompt solution.
Utility model content
In view of this, the purpose of this utility model is the exhaust valve providing a kind of engine, to meet the performance requirement of heavy-duty engine.
Another object of the present utility model is the engine providing a kind of this exhaust valve of application.
For achieving the above object, the utility model provides following technical scheme:
An exhaust valve for engine, comprises engine valve stem and head portion that, and the material of described head portion that is high temperature corrosion-resisting nickel alloy steel.
Preferably, in above-mentioned exhaust valve, the material of described head portion that is Inconel751.
The utility model additionally provides a kind of engine, comprises exhaust valve, and described exhaust valve is the exhaust valve as described in above any one.
Compared with prior art, the beneficial effects of the utility model are:
In the exhaust valve of the engine that the utility model provides, the nickel alloy steel of the material selection high temperature corrosion-resisting of head portion that, has good wearability under the condition of high temperature, good intensity corrosion resistance and thermohardening; And there is higher elevated temperature strength, good anti-oxidant and corrosion resistance, the combination properties such as good fatigue behaviour, fracture toughness.Compared with existing material, substantially increase operating temperature and the fatigue resistance of exhaust valve, meet the requirement of heavy-duty engine.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of a kind of exhaust valve that Fig. 1 provides for the utility model embodiment.
Detailed description of the invention
Core of the present utility model there is provided a kind of exhaust valve of engine, can meet the performance requirement of heavy-duty engine.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the structural representation of a kind of exhaust valve that Fig. 1 provides for the utility model embodiment.
The utility model embodiment provides a kind of exhaust valve of engine, and exhaust valve comprises engine valve stem 1 and head portion that 2, and head portion that 2 adopts the nickel alloy steel of high temperature corrosion-resisting.
Because the nickel alloy steel of high temperature corrosion-resisting has good wearability at high operating temperatures, good intensity corrosion resistance and thermohardening; And there is higher elevated temperature strength, good anti-oxidant and corrosion resistance, the combination properties such as good fatigue behaviour, fracture toughness.Compared with existing material, substantially increase operating temperature and the fatigue resistance of exhaust valve, meet the performance requirement of heavy-duty engine to exhaust valve.
Further, in the present embodiment, the material of head portion that 2 is that Inconel751, Inconel751 refer to nickel to be base, can a metalloid material of long-term work under high temperature more than 750 degree and certain effect of stress; And there is higher elevated temperature strength, good anti-oxidant and corrosion resistance, the combination properties such as good fatigue behaviour, fracture toughness.Inconel751 is single austenite structure, there is good structure stability and dependability at various temperatures, based on above-mentioned performance characteristics, and the alloying level of high temperature alloy is higher, be otherwise known as " superalloy ", is a kind of important materials being widely used in Aeronautics and Astronautics, oil, chemical industry, naval vessel.Be applied on exhaust valve, the requirement of heavy-duty engine to operating temperature and fatigue resistance can be met.
The utility model additionally provides a kind of engine, comprises exhaust valve, and exhaust valve adopts above exhaust valve all described by embodiment, and this engine as heavy-duty engine, can avoid the inefficacy of exhaust valve, ensure that the normal work of engine.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. an exhaust valve for engine, comprises engine valve stem (1) and head portion that (2), it is characterized in that, the material of described head portion that (2) is the nickel alloy steel of high temperature corrosion-resisting, Inconel751.
2. an engine, comprises exhaust valve, it is characterized in that, described exhaust valve is exhaust valve as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476950.7U CN204299642U (en) | 2014-08-22 | 2014-08-22 | A kind of engine and exhaust valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476950.7U CN204299642U (en) | 2014-08-22 | 2014-08-22 | A kind of engine and exhaust valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299642U true CN204299642U (en) | 2015-04-29 |
Family
ID=53105188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420476950.7U Active CN204299642U (en) | 2014-08-22 | 2014-08-22 | A kind of engine and exhaust valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299642U (en) |
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2014
- 2014-08-22 CN CN201420476950.7U patent/CN204299642U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |