JPS62197610A - Engine valve - Google Patents
Engine valveInfo
- Publication number
- JPS62197610A JPS62197610A JP3840186A JP3840186A JPS62197610A JP S62197610 A JPS62197610 A JP S62197610A JP 3840186 A JP3840186 A JP 3840186A JP 3840186 A JP3840186 A JP 3840186A JP S62197610 A JPS62197610 A JP S62197610A
- Authority
- JP
- Japan
- Prior art keywords
- titanium alloy
- engine valve
- valve
- alloy
- heat resistance
- 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.)
- Pending
Links
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 50
- 238000003466 welding Methods 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 abstract description 13
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 229910000883 Ti6Al4V Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 239000010936 titanium Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は内燃機関用のきのこ形のチタン合金製エンジン
バルブに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mushroom-shaped titanium alloy engine valve for internal combustion engines.
従来のチタン合金製エンジンバルブは第４図に示すよう
に傘部１、軸部２とも同一のチタン合金材でしかも一体
であシ、チタン合金同志の溶接はなされていない。In a conventional titanium alloy engine valve, as shown in FIG. 4, both the cap portion 1 and the shaft portion 2 are made of the same titanium alloy material and are integral, and the titanium alloys are not welded together.
チタン合金と鉄系材料といった異種金属間の溶接（ＦＰ
Ｊえば、摩擦溶接）はチタン材自体の著るしく強い酸化
反応性のため困難であることはよく知られておシ、実用
されているものはない。Welding between dissimilar metals such as titanium alloy and iron-based materials (FP
It is well known that friction welding (for example, friction welding) is difficult due to the extremely strong oxidation reactivity of the titanium material itself, and nothing has been put into practical use.
現在、最も広く普及しているチタン合金はムｔ ６％、
７４％のもので、自動車用等の工／ジンの高性能化要求
に対応して、エンジンバルブの軽量化用材料として使用
されている。耐熱鋼に比べ非常に軽く、シかも比強度、
耐食性ともに耐熱鋼以上であるチタン合金はエンジンバ
ルブ用材料として優れた性能を持っている。エンジンバ
ルブにおいて通常吸気バルブ用としては耐熱性はあまり
要求されないので、通常の耐熱性のあまシ高くないＡｔ
６％、７４％のチタン合金（以下、Ｔｉ−６Ｍ−４
７と記す）が使用され、高い耐熱性が必要な排気バルブ
用としてはＴｉ−６Ａｔ−４７に比べ、高温時の引張り
強度に優れている高合金の、チタン合金（飼えば、Ａｔ
６％、Ｓｎ２％、Ｚｒ ４％、Ｍｏ２１等）が用いら
れている。Currently, the most widely used titanium alloy is Mut 6%,
It has a content of 74% and is used as a material for reducing the weight of engine valves in response to the demand for higher performance in automobile and other machinery/engines. It is extremely light compared to heat-resistant steel, and has a high specific strength.
Titanium alloys, which have better corrosion resistance than heat-resistant steel, have excellent performance as materials for engine valves. Engine valves do not require much heat resistance for normal intake valves, so At
6%, 74% titanium alloy (hereinafter referred to as Ti-6M-4
For exhaust valves that require high heat resistance, a high-alloy titanium alloy (noted as At-47) that has superior tensile strength at high temperatures is used.
6%, Sn 2%, Zr 4%, Mo21, etc.) are used.
〔発明が解決しようとする問題点］
従来のチタン合金製エンジンバルブは前述のように傘部
、軸部とも同一材でしかも一体であるが、チタン合金材
料は通常のエンジンバルブ用耐熱鋼材に比べ著るしく高
価であシ、優れた性能特性をもつチタン合金製エンジン
バルブの普及を妨げている要因の１つにもなっている。[Problems to be Solved by the Invention] As mentioned above, in conventional titanium alloy engine valves, both the cap and shaft parts are made of the same material and are integral. This is one of the factors preventing the widespread use of titanium alloy engine valves, which are extremely expensive and have excellent performance characteristics.
エンジンバルブは本来、その材料コストの占める比率が
高いものであυ、材料コストを如何に低減するかは大き
な技術的な課題となっている。Engine valves inherently have a high proportion of material costs, and how to reduce material costs is a major technical issue.
特に、排気用バルブに優れた耐熱性を発揮するＡｔ ６
％、Ｓｎ２％、Ｚｒ４％、Ｍｏ２％の成分をもつチタン
合金（以下、Ｔ１Ｔ１−６ＡＬ−２８ｎ−４Ｚｒ−２と
記す）はその材料コストは通常のＴｉ −６Ａｔ −４
Ｖ に比べ更に高価であり、またその材料の入手性も
難しい。In particular, At 6 exhibits excellent heat resistance for exhaust valves.
%, Sn2%, Zr4%, Mo2% titanium alloy (hereinafter referred to as T1T1-6AL-28n-4Zr-2) has a material cost similar to that of ordinary Ti-6At-4.
It is more expensive than V, and its materials are also difficult to obtain.
〔問題点を解決するだめの手段］
本発明は２つの異なるチタン合金材を溶接したチタン合
金製エンジンバルブを提供するもので、特に耐熱性が要
求されるエンジンバルブの傘部に高合金チタン合金材（
例えば、Ｔｉ−６ｋｌ −２８ｎ −４Ｚｒ −２Ｍｏ
）を用い、軸部には通常のチタン合金例えばＴｉ −
６Ａｔ −４Ｖ材を用いこれらを傘部下部と軸部にて各
々溶接することによシ高価なチタン合金材の使用量を少
なくしようとするものである。[Means for Solving the Problems] The present invention provides a titanium alloy engine valve in which two different titanium alloy materials are welded together, and in particular, a high-alloy titanium alloy is used for the head portion of the engine valve, which requires high heat resistance. Material (
For example, Ti-6kl-28n-4Zr-2Mo
), and the shaft is made of ordinary titanium alloy such as Ti-
The purpose is to reduce the amount of expensive titanium alloy material used by using 6At-4V material and welding these materials at the lower part of the umbrella part and the shaft part.
すなわち本発明はチータン合金製のエンジンバルブにお
いて、耐熱性の高いチタン合金部材と耐熱性の低いチタ
ン合金部材とを溶接してなることを特徴とするエンジン
バルブであり、その好ましい実施態様としては、エンジ
ンバルブの傘部には耐熱性の高いチタン合金部材を、軸
部には耐熱性の低いチタン合金部材を用いる態様があげ
られる。That is, the present invention is an engine valve made of a titanium alloy, characterized in that it is formed by welding a titanium alloy member with high heat resistance and a titanium alloy member with low heat resistance, and its preferred embodiment is as follows: One example is an embodiment in which a titanium alloy member with high heat resistance is used for the head portion of the engine valve, and a titanium alloy member with low heat resistance is used for the shaft portion.
耐熱性の高いチタン合金部材としては、Ｔｉ−６ムＬ
−２８ｎ −４Ｚｒ −２Ｍｏ 、 該合金に更１ｃ
Ｅｌｉ を１１憾添加したＴｉ −６Ａｔ−２８ｎ
−４２ｒ −２８さらＫはＴｉ −５ＡＬ −５ａｎ
−２Ｚｒ −２Ｍｏ−α２Ｓ１、工Ｍニー８２９（Ｔｉ
−５，５ムＬ−１５８ｎ −５Ｚｒ−α５ ＭＯ−１ｕ
ｂ）などの準α形に属するチタン合金があげられ、耐熱
性の低いチタン合金部材としてはＴｉ −６Ａｔ−４ｖ
のほかＴｉ−８ＡＴｉ−８Ａｔ−Ｉ、Ｔｉ−６Ａｌ−６
７−２Ｓｎ、 Ｔｉ−８Ｍｎ、 Ｔｉ−６Ａ／ニー
２８ｎ −４Ｚｒ −６Ｍｏ などがあげられる。As a titanium alloy member with high heat resistance, Ti-6μL
-28n -4Zr -2Mo, additional 1c to the alloy
Ti-6At-28n with 11 additions of Eli
-42r -28K is Ti -5AL -5an
-2Zr -2Mo-α2S1, engineering M knee 829 (Ti
-5,5mu L-158n -5Zr-α5 MO-1u
Titanium alloys belonging to the quasi-α type such as b) are mentioned, and titanium alloy members with low heat resistance include Ti-6At-4v.
In addition, Ti-8ATi-8At-I, Ti-6Al-6
Examples include 7-2Sn, Ti-8Mn, Ti-6A/nee 28n-4Zr-6Mo, and the like.
又、２種のチタン合金部材の溶接は、通常はＴ工Ｇ溶接
によるが、摩擦圧接、電子ビーム、レーザ溶接なども可
能である。Further, two types of titanium alloy members are usually welded by T-welding, but friction welding, electron beam welding, laser welding, etc. are also possible.
以下、本発明の一実施態様を第１図によって説明する。Hereinafter, one embodiment of the present invention will be explained with reference to FIG.
第１図において１は例えばＴ１−６Ａｔ −２Ｓｎ −
４Ｚｒ −２Ｍｏのような耐熱性の高いチタン合金部材
、２はＴ１−６ムｔ−４Ｖのような耐熱性の低いチタン
合金部材、３はＴ工Ｇ溶接などによる溶接部である。In FIG. 1, 1 is, for example, T1-6At -2Sn -
2 is a titanium alloy member with high heat resistance such as 4Zr-2Mo, 2 is a titanium alloy member with low heat resistance such as T1-6Mt-4V, and 3 is a welded part by T welding or G welding.
このような構成にすることによって高価な耐熱性の高い
チタン合金の使用量を減じ、安価に性能のすぐれたチタ
ン合金製エンジンバルブを得ることができる。With this configuration, the amount of expensive titanium alloy with high heat resistance used can be reduced, and a titanium alloy engine valve with excellent performance can be obtained at low cost.
第２図、第３図に各種チタン合金の特性を示す図表を掲
げる。第２図はチタン合金の高温引張強度とクリープ強
度との関係を示す図表、第３図はチタン合金の高温にお
けるラルソ／ミラー常数の比較を示す図表である。第２
図、第３図における符号は下記のものを表わす。Figures 2 and 3 are charts showing the characteristics of various titanium alloys. FIG. 2 is a chart showing the relationship between high temperature tensile strength and creep strength of titanium alloys, and FIG. 3 is a chart showing a comparison of Larso/Miller constants at high temperatures of titanium alloys. Second
The symbols in the figures and FIG. 3 represent the following.
チタ：ｉ合金Ｈエンジンバルブにおいて、例えば傘部に
高温強度に優れた高価なチタン合金材を使用し、軸部に
は通常の安価なチタン合金材を用いることにより高価な
高合金チタン合金のエンジンバルブ１本当りの使用量を
大巾に少なくすることが可能となり、より安価な耐熱性
に優れたチタン合金製バルブを提供することができる。Titanium: In the i-alloy H engine valve, for example, an expensive titanium alloy material with excellent high-temperature strength is used for the cap part, and a regular inexpensive titanium alloy material is used for the shaft part, thereby making it possible to reduce the cost of an expensive high-alloy titanium alloy engine. It becomes possible to significantly reduce the amount used per valve, and it is possible to provide a titanium alloy valve that is less expensive and has excellent heat resistance.
本発明のチタン溶接エンジンバルブは特に傘部の耐熱性
が要求される排気用バルブとしてより効果が得られる。The titanium welded engine valve of the present invention is particularly effective as an exhaust valve where heat resistance of the head portion is required.
第１図は本発明の一実施態様を示す切断面図、第２図は
各種チタン合金の高温引張強度とクリープ強度との関係
を示す図表、第３図は各種チタン合金の高温におけるラ
ルソンミラー常数の比較を示す図表、第４図は従来のチ
タン合金環エンジンバルブの切断断面図である。Fig. 1 is a cross-sectional view showing one embodiment of the present invention, Fig. 2 is a chart showing the relationship between high temperature tensile strength and creep strength of various titanium alloys, and Fig. 3 is the Larson Miller constant at high temperature of various titanium alloys. Figure 4 is a cross-sectional view of a conventional titanium alloy ring engine valve.
Claims (1)
チタン合金部材と耐熱性の低いチタン合金部材とを溶接
してなることを特徴とするエンジンバルブ。An engine valve made of titanium alloy, characterized in that it is made by welding a titanium alloy member with high heat resistance and a titanium alloy member with low heat resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3840186A JPS62197610A (en) | 1986-02-25 | 1986-02-25 | Engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3840186A JPS62197610A (en) | 1986-02-25 | 1986-02-25 | Engine valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62197610A true JPS62197610A (en) | 1987-09-01 |
Family
ID=12524269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3840186A Pending JPS62197610A (en) | 1986-02-25 | 1986-02-25 | Engine valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62197610A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63158506U (en) * | 1987-04-03 | 1988-10-18 | ||
| JPS63191210U (en) * | 1987-05-29 | 1988-12-09 | ||
| US6354001B1 (en) | 2000-02-23 | 2002-03-12 | Fuji Oozx Inc. | Method of manufacturing a Ti alloy poppet value |
| EP1213087A2 (en) * | 2000-12-08 | 2002-06-12 | Fuji Oozx Inc. | Method of joining different metal materials by friction welding |
| US6691910B2 (en) | 2000-12-08 | 2004-02-17 | Fuji Oozx, Inc. | Method of joining different metal materials by friction welding |
| US8784065B2 (en) | 2011-05-24 | 2014-07-22 | Caterpillar Inc. | Friction welding of titanium aluminide turbine to titanium alloy shaft |
-
1986
- 1986-02-25 JP JP3840186A patent/JPS62197610A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63158506U (en) * | 1987-04-03 | 1988-10-18 | ||
| JPS63191210U (en) * | 1987-05-29 | 1988-12-09 | ||
| US6354001B1 (en) | 2000-02-23 | 2002-03-12 | Fuji Oozx Inc. | Method of manufacturing a Ti alloy poppet value |
| EP1213087A2 (en) * | 2000-12-08 | 2002-06-12 | Fuji Oozx Inc. | Method of joining different metal materials by friction welding |
| EP1213087A3 (en) * | 2000-12-08 | 2002-10-23 | Fuji Oozx Inc. | Method of joining different metal materials by friction welding |
| US6691910B2 (en) | 2000-12-08 | 2004-02-17 | Fuji Oozx, Inc. | Method of joining different metal materials by friction welding |
| US8784065B2 (en) | 2011-05-24 | 2014-07-22 | Caterpillar Inc. | Friction welding of titanium aluminide turbine to titanium alloy shaft |
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