JPH0441909A - Valve for engine and manufacture thereof - Google Patents
Valve for engine and manufacture thereofInfo
- Publication number
- JPH0441909A JPH0441909A JP14705090A JP14705090A JPH0441909A JP H0441909 A JPH0441909 A JP H0441909A JP 14705090 A JP14705090 A JP 14705090A JP 14705090 A JP14705090 A JP 14705090A JP H0441909 A JPH0441909 A JP H0441909A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- section
- based alloy
- valve
- stem
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 65
- 239000000956 alloy Substances 0.000 claims abstract description 65
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 150000002739 metals Chemical class 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract 2
- 229910000861 Mg alloy Inorganic materials 0.000 abstract 2
- 229910001069 Ti alloy Inorganic materials 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000009721 upset forging Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011797 cavity material Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は燃焼ガスの吸気あるいは排気等を行うエンジン
用バルブおよびその製造方法に関し、−層詳細には、酸
素または窒素と親和性が強く、材料的劣化を生じ易い等
の欠点を有する軽合金の外側に前記欠点を補う性質を有
する別異の合金を被覆することにより、高温での曲げ疲
労強度を向上させ且つ減耗防止を図ることができるエン
ジン用バルブおよびその製造方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to an engine valve for intake or exhaust of combustion gas, and a method for manufacturing the same. By coating the outside of a light alloy that has drawbacks such as easy material deterioration with a different alloy that has properties that compensate for the drawbacks, it is possible to improve the bending fatigue strength at high temperatures and prevent wear and tear. The present invention relates to an engine valve and a manufacturing method thereof.
［従来の技術］
従来から、エンジン等の内燃機関において吸気、排気を
行うためのエンジン用バルブはその高性能化に伴い、作
動温度の上昇および高温高負荷の傾向等、使用条件は極
めて厳しくなっている。[Prior Art] As the performance of engine valves for air intake and exhaust in internal combustion engines such as engines has improved, their operating conditions have become extremely severe, such as increased operating temperatures and a tendency toward high temperatures and high loads. ing.
従来から、この使用条件に適合したエンジン用バルブを
得るべく種々改良が加えられてきた。Conventionally, various improvements have been made to obtain engine valves that meet these usage conditions.
盛金法、溶射法等による耐熱耐食合金層を接着複合させ
た被覆バルブがその例である。また、例えば、特公昭３
５−６５２８号に開示されるように、中間的バルブ形状
に鍛縮してから異種金属を溶着して鍛造成形する技術的
思想が提示されている。しかしながら、前記の盛金法、
溶射法では被覆後に機械加工を行わなければ所望の被覆
部の外形が得られず、また被覆金属の断面内に気孔ある
いは鋳巣の残存が不可避である。An example of this is a coated valve in which a heat-resistant and corrosion-resistant alloy layer is bonded and composited by a metal deposition method, a thermal spraying method, or the like. Also, for example,
No. 5-6528 discloses a technical idea of forging into an intermediate valve shape and then welding dissimilar metals to forge-form. However, the above-mentioned money transfer method,
In the thermal spraying method, the desired outer shape of the coated portion cannot be obtained unless machining is performed after coating, and pores or cavities inevitably remain in the cross section of the coated metal.
さらに、特公昭３５−６５２８号に開示された技術的思
想では、被覆がシートフェース部付近に限られ且つ仕上
げ時に被覆断面形状が整わず、さらにまた、バルブ基体
と盛り上がった溶着金属との境界部に亀裂が残る場合が
ある。また、バルブ基体の外装全体を被覆するわけでは
ないので、バルブ基体の酸素または窒素による材料劣化
を阻止することはできない。Furthermore, with the technical idea disclosed in Japanese Patent Publication No. 35-6528, the coating is limited to the vicinity of the seat face, the cross-sectional shape of the coating is not uniform during finishing, and furthermore, the boundary between the valve base and the raised weld metal Cracks may remain. Furthermore, since the entire exterior of the valve base is not coated, material deterioration of the valve base due to oxygen or nitrogen cannot be prevented.
これらの欠点を克服すべく、特公昭４７−２２４４号は
「被覆エンジンバルブの製造方法」に係る技術的思想を
開示している。すなわち、この公報によれば、熱腐食に
よる肉薄化からの破損の危険を生じ易いバルブ傘部、首
部、およびバルブヘッド頂面となる部分の棒状素材に対
して可鍛性のある被覆耐熱金属を複合接着させた後、ア
プセット鍛造、または押し出し成形により傘部および首
部を成形すると同時に所望の形状に被覆成形することが
できる。In order to overcome these drawbacks, Japanese Patent Publication No. Sho 47-2244 discloses a technical idea related to a "method for manufacturing coated engine valves." In other words, according to this publication, a malleable coated heat-resistant metal is used for the rod-shaped material of the valve head, neck, and top surface of the valve head, which are susceptible to damage due to thinning due to heat corrosion. After composite bonding, the umbrella portion and neck portion can be formed by upset forging or extrusion molding, and at the same time, cover molding can be performed into a desired shape.
［発明が解決しようとする課題］
しかしながら、前記特公昭４７〜２２４４号に係る技術
的思想では、アプセット鍛造、押し出し成形等により傘
部および首部を成形し、同時に所望の形状に被覆成形し
たのちに、バルブ軸部を溶接してバルブ成形を完成して
いるため、成形工程が長く、溶接部分の材料的強度を均
一に保持することは難しい。また、バルブ軸部に用いる
ことが可能な材料も限定されるために、バルブ全体とし
ての耐摩耗性、耐疲労性等の向上は期待できない。さら
には、バルブ全体としての軽量化が図れないという不都
合も露呈している。[Problems to be Solved by the Invention] However, in the technical idea related to the above-mentioned Japanese Patent Publication No. 47-2244, the umbrella portion and the neck portion are formed by upset forging, extrusion molding, etc., and at the same time, after being covered and molded into a desired shape, Since the valve shaft is welded to complete the valve molding, the molding process is long and it is difficult to maintain uniform material strength at the welded part. Furthermore, since the materials that can be used for the valve shaft are limited, it is difficult to expect improvements in the wear resistance, fatigue resistance, etc. of the valve as a whole. Furthermore, the disadvantage is that it is impossible to reduce the weight of the valve as a whole.
従って、本発明の目的は、バルブ全体としての耐摩耗性
、耐疲労性等の機械的性質の向上を図ることが可能であ
るとともにバルブ全体としての軽量化を達成することが
できるエンジン用バルブおよびその製造方法を提供する
ことにある。Therefore, an object of the present invention is to provide an engine valve that can improve the mechanical properties such as wear resistance and fatigue resistance of the valve as a whole, and that can reduce the weight of the valve as a whole. The object of the present invention is to provide a manufacturing method thereof.
［課題を解決するための手段］
前記の課題を解決するために、本発明に係るエンジン用
バルブは、
ステム部と傘部を有するエンジン用バルブにおいて、
前記ステム部と傘部とを一体的にＴｉ系合金、Ｍｇ系合
金、Ａｌ系合金、またはＴｉ、Ｍｇ。[Means for Solving the Problems] In order to solve the above-mentioned problems, an engine valve according to the present invention includes an engine valve having a stem portion and a cap portion, in which the stem portion and the cap portion are integrally formed. Ti-based alloy, Mg-based alloy, Al-based alloy, or Ti, Mg.
Ａｌからなる金属のうち２種類以上の金属の組み合わせ
を主体とする合金のうちいずれかの合金を用いて形成し
、
前記ステム部と傘部とをＦｅ基合金、Ｃｏ基合金、Ｎｉ
基合金のうちいずれかの合金を用いて被覆し、且つ前記
ステム部の外側に形成される被覆部は、傘部の外側に形
成される被覆部よりも薄いことを特徴とする。The stem portion and the umbrella portion are formed using an alloy mainly composed of a combination of two or more metals made of Al, and the stem portion and the umbrella portion are made of an Fe-based alloy, a Co-based alloy, or a Ni-based alloy.
The covering part coated with any one of the base alloys and formed on the outside of the stem part is characterized in that it is thinner than the covering part formed on the outside of the umbrella part.
また、本発明に係るエンジン用バルブの製造方法は、
Ｔｉ系合金、Ｍｇ系合金、Ａｌ系合金、あるいは、Ｔｉ
５Ｍｇ、Ａｌからなる金属のうち少なくとも２種類以上
の金属の組み合わせを主体とする合金のうちいずれかの
合金を用いた基体部用材料に、Ｆｅ基合金、Ｃｏ基合金
、Ｎ１基合金のうちいずれかの合金からなる被覆材料を
密封被覆したビレット部材を形成する第１の工程と、
前記第１工程で形成したビレット部材を冷間状態あるい
は熱間状態で傘部とステム部とに成形する第２の工程と
、
からなることを特徴とする。Further, the method for manufacturing an engine valve according to the present invention includes a Ti-based alloy, a Mg-based alloy, an Al-based alloy, or a Ti-based alloy.
5Mg, Al, any of Fe-based alloys, Co-based alloys, and N1-based alloys may be used as the material for the base body using any alloy mainly composed of a combination of at least two or more metals. a first step of forming a billet member hermetically coated with a coating material made of said alloy; and a second step of forming the billet member formed in the first step into an umbrella portion and a stem portion in a cold or hot state. It is characterized by consisting of the following steps:
［作用］
前記のように、本発明に係るエンジン用バルブおよびそ
の製造方法では、ステム部と傘部とをＴｉ系合金、Ｍｇ
系合金、Ａｌ系合金、あるいは、Ｔｉ、Ｍｇ５Ａｌから
なる金属のうち少なくとも２種類以上の金属の組み合わ
せを主体とする合金のうちいずれかの合金を用いること
により成形し、これによってバルブ全体としての軽量化
を図ることを可能とし、さらに、この一体化されたステ
ム部と傘部の外側にＦｅ基合金、Ｃｏ基合金、Ｎ１基合
金のうち１種類の合金を用いて密封被覆することにより
、前記ステム部と傘部の材料特性上の劣性を補い、さら
には酸素または窒素によって汚染されることにより生ず
る強度の劣化を回避することができる。[Function] As described above, in the engine valve and the manufacturing method thereof according to the present invention, the stem portion and the cap portion are made of Ti-based alloy, Mg
The valve is molded using any of the following alloys: Al-based alloys, Al-based alloys, or alloys mainly composed of a combination of at least two of the metals consisting of Ti and Mg5Al, thereby reducing the overall weight of the valve. Furthermore, by sealingly coating the outside of the integrated stem portion and umbrella portion with one type of alloy among Fe-based alloy, Co-based alloy, and N1-based alloy, It is possible to compensate for the inferiority of the material properties of the stem portion and the umbrella portion, and furthermore to avoid deterioration in strength caused by contamination with oxygen or nitrogen.
従って、耐摩耗性、耐疲労性等の向上を図ることが可能
である。Therefore, it is possible to improve wear resistance, fatigue resistance, etc.
［実施例］
次に、本発明に係るエンジン用バルブについてその製造
方法との関連で好適な実施例を挙げ、添付の図面を参照
しながら以下詳細に説明する。[Embodiments] Next, preferred embodiments of the engine valve according to the present invention will be described in detail in connection with the manufacturing method thereof, with reference to the accompanying drawings.
第１図において、参照符号１０は本発明に係るエンジン
用バルブを示し、当該エンジン用バルブ１０は、基本的
には、傘部１２と、ステム部１４と、前記傘部１２およ
びステム部１４の外側を密封被覆する被覆部１６とによ
って構成されている。In FIG. 1, reference numeral 10 indicates an engine valve according to the present invention, and the engine valve 10 basically includes an umbrella part 12, a stem part 14, and a combination of the umbrella part 12 and the stem part 14. It is constituted by a covering part 16 that seals and covers the outside.
また、前記被覆部１６によって密封被覆され、傘部１２
およびステム部１４を成形するだめの材料となる、所謂
、基体部１８はＡ１：６重量％、Ｖ：４重量％、および
残部がＴｉからなるチタン系軽合金が用いられ、被覆部
１６はＦｅ基合金、すなわち、ステンレス鋼が用いられ
ている。The umbrella portion 12 is also hermetically covered by the covering portion 16.
The so-called base portion 18, which is the material for forming the stem portion 14, is made of a titanium-based light alloy consisting of 6% by weight of A1, 4% by weight of V, and the balance is Ti, and the coating portion 16 is made of Fe. The base alloy, ie stainless steel, is used.
以上のような構成におけるエンジン用バルブの製造方法
は以下の通りである。A method for manufacturing an engine valve having the above configuration is as follows.
先ず、焼結温度１２６０℃、雰囲気圧力１０−４〜１Ｏ
−５）−ルの焼結条件で４時間真空焼結して、Ａ１：６
重量％、Ｖ；４重量％、および残部がＴｉからなる直径
１９＋ｎｍ、長さ２４ｍｍの形状の素粉末冶金法を用い
て焼結合金を得、基体部１８としたく第２図ａ参照）。First, the sintering temperature was 1260°C and the atmospheric pressure was 10-4 to 1O.
-5) Vacuum sintered for 4 hours under the sintering conditions of -A1:6
% by weight, V: 4% by weight, and the balance being Ti, a sintered alloy having a shape of 19+ nm in diameter and 24 mm in length was obtained using the elementary powder metallurgy method, and was used as the base portion 18 (see FIG. 2a).
次に、前記基体部１８を外径２２ｍｍ、肉厚１．５１１
＋＋＋＋のステンレス製鋼管１７ａに挿入しく第２図す
参照）、両端の開口部分を、第２図Ｃに示すように、肉
厚１．５ｍｍのステンレス製円盤１７ｃ、１７ｄを用い
て電子ビーム溶接で封印し、ビレット部２０を得た。な
お、必要に応じて前記封印前に焼結合金の脱気をするこ
とも可能である。Next, the base portion 18 is made to have an outer diameter of 22 mm and a wall thickness of 1.511 mm.
Insert into the stainless steel pipe 17a (see Figure 2), and the openings at both ends are welded by electron beam welding using stainless steel disks 17c and 17d with a wall thickness of 1.5 mm, as shown in Figure 2C. It was sealed and a billet part 20 was obtained. In addition, it is also possible to degas the sintered alloy before the sealing, if necessary.
次いで、前記ビレット部２０を９５０℃に加熱し、ロー
タリスェージ等を用いて、所謂、据込加工法により、第
２図ｄに示すように、バルブヘッド部３２の直径１が２
２ｍｍ、軸部の直径ｍが７ｍｍの細軸ビレット３０を成
形した。なお、軸部の加工に際しては、直径２２ｍｍの
ビレット部材を、先ず、直径１４＋＋＋ｎ＋（加工比２
．５）にし、次に直径９ｍｍ（加圧比２．５）、次いで
直径７ｍｍ（加工比１．７）を順次加圧した。また、こ
の工程において後述する傘部１２の前記ステンレス製鋼
管１７ａを材料とした被覆部１６ｂがステム部１４の前
記ステンレス製鋼管１７ａを材料とした被覆部１６ａよ
りも薄くなるように成形した。Next, the billet portion 20 is heated to 950° C., and the diameter 1 of the valve head portion 32 is reduced to 2 by a so-called upsetting method using a rotary cage or the like.
A thin shaft billet 30 having a diameter of 2 mm and a diameter m of the shaft portion of 7 mm was molded. In addition, when processing the shaft part, first, a billet member with a diameter of 22 mm is
．． 5), then pressurized to a diameter of 9 mm (pressing ratio 2.5), and then to a diameter of 7 mm (processing ratio 1.7). In addition, in this step, a covering portion 16b made of the stainless steel pipe 17a of the umbrella portion 12, which will be described later, was formed to be thinner than a covering portion 16a of the stem portion 14 made of the stainless steel pipe 17a.
そして、バルブヘッド部３２のみを再び９５０℃に加熱
し、傘打鍛造により第２図ｅに示す直径ｎが３０岨の傘
部を有し長さ０が１３０＋ｎｍの形状のエンジン用バル
ブ１０を得た。Then, only the valve head portion 32 is heated again to 950° C., and the engine valve 10 having a shape of a head portion with a diameter n of 30 mm and a length 0 of 130+ nm as shown in FIG. 2 e is obtained by umbrella punch forging. Ta.
なお、第３図は据込加工後の被覆部、すなわち、ステン
レス鋼部４０と基体部、すなわち、焼結Ｔｉ−６Ａｌ−
４Ｖ合金部５０との界面６０を示す電子顕微鏡写真であ
る。この写真より理解されるように、焼結Ｔｉ−６Ａｌ
−４Ｖ合金部５０には焼結特有の空隙が認められず、ま
た、界面６０にはＴｉの金属間化合物が形成されていな
い。従って、基体部材として、焼結Ｔｉ−６Ａｌ−４Ｖ
合金部５０は適切な組織調整がなされ、また、界面６０
においては必要且つ十分な界面強化がなされたと判定で
きる。In addition, FIG. 3 shows the covering part, that is, the stainless steel part 40, and the base part, that is, the sintered Ti-6Al-
It is an electron micrograph showing an interface 60 with a 4V alloy part 50. As can be understood from this photo, sintered Ti-6Al
In the -4V alloy part 50, no voids peculiar to sintering are observed, and no Ti intermetallic compound is formed at the interface 60. Therefore, as a base member, sintered Ti-6Al-4V
The alloy part 50 has an appropriate structure adjusted, and the interface 60
In this case, it can be determined that the necessary and sufficient interface reinforcement has been achieved.
以上のような製造方法によって得られるエンジン用バル
ブは焼結Ｔｉ−６Ａｌ−４Ｖ合金を基体部材として用い
ることにより従来の方法で得られる同じ形状のエンジン
用バルブに比べて約３０％の軽量化が図れた。The engine valve obtained by the above manufacturing method uses sintered Ti-6Al-4V alloy as the base member, and is approximately 30% lighter than an engine valve of the same shape obtained by the conventional method. I was able to figure it out.
また、ステンレス鋼で酸素等の親和性の大きい基体部材
を密封被覆することにより、酸素等の汚染によりＴ１等
の基体部材が劣化することを回避するとともに、耐摩耗
性に劣るというＴｉの材料的劣性を補うことができる。In addition, by sealing and covering base members with high affinity for oxygen etc. with stainless steel, it is possible to avoid deterioration of base members such as T1 due to contamination with oxygen etc. Can compensate for recessiveness.
［発明の効果］
以上のように、本発明に係るエンジン用バルブおよびそ
の製造方法によれば、Ｔｌ系合金、Ｍｇ系合金、Ａｌ系
合金、あるいは、Ｔ＋、 Ｍｇ、Ａｌからなる金属であ
って、２種類以上の金属の組み合わせを主体とする合金
のうち、いずれかの合金を基体部に用い、前記基体部を
Ｆｅ基合金、Ｃｏ基合金、Ｎｉ基合金のうちいずれかの
合金を用いて被覆密封することによりバルブを成形して
いる。従って、バルブ全体としての耐摩耗性、耐疲労性
において優れ、しかも、−層軽量化を達成できるという
効果が得られる。[Effects of the Invention] As described above, according to the engine valve and the method for manufacturing the same according to the present invention, a Tl-based alloy, a Mg-based alloy, an Al-based alloy, or a metal consisting of T+, Mg, or Al can be used. , among alloys mainly consisting of a combination of two or more types of metals, any alloy is used for the base part, and the base part is made of any one of Fe-based alloys, Co-based alloys, and Ni-based alloys. The valve is formed by coating and sealing. Therefore, the valve as a whole has excellent wear resistance and fatigue resistance, and also has the effect of achieving a -layer weight reduction.
第１図は、本発明に係るエンジン用バルブの縦断面図、
第２図は、本発明に係るエンジン用バルブの製造工程を
示す概略図、
第３図は、本発明に係るエンジン用バルブの金属組織を
示す顕微鏡写真である。
１０・・・エンジン用バルブ
１２・・・傘部
１４・・・ステム部
１６ａ、１６ ｂ −・・被覆部
１７ａ・・・ステンレス製鋼管
１８・・・基体部
２０・・・ビレット部
３０・・・細軸ビレット
４０・・・ステンレス鋼部
５０・・・焼結Ｔｉ−６ＡＪ−４Ｖ合金部６０・・・界
面FIG. 1 is a longitudinal sectional view of an engine valve according to the present invention, FIG. 2 is a schematic diagram showing the manufacturing process of an engine valve according to the present invention, and FIG. 3 is a schematic diagram showing the manufacturing process of an engine valve according to the present invention. It is a micrograph showing a metal structure. DESCRIPTION OF SYMBOLS 10... Engine valve 12... Umbrella part 14... Stem part 16a, 16b -... Coating part 17a... Stainless steel pipe 18... Base part 20... Billet part 30...・Thin shaft billet 40...Stainless steel part 50...Sintered Ti-6AJ-4V alloy part 60...Interface
Claims (2)
て、 前記ステム部と傘部とを一体的にＴｉ系合金、Ｍｇ系合
金、Ａｌ系合金、またはＴｉ、Ｍｇ、Ａｌからなる金属
のうち２種類以上の金属の組み合わせを主体とする合金
のうちいずれかの合金を用いて形成し、 前記ステム部と傘部とをＦｅ基合金、Ｃｏ基合金、Ｎｉ
基合金のうちいずれかの合金を用いて被覆し、且つ前記
ステム部の外側に形成される被覆部は、傘部の外側に形
成される被覆部よりも薄いことを特徴とするエンジン用
バルブ。(1) In an engine valve having a stem portion and a cap portion, the stem portion and the cap portion are integrally made of a Ti-based alloy, a Mg-based alloy, an Al-based alloy, or two of the metals consisting of Ti, Mg, and Al. The stem portion and the umbrella portion are formed using any one of alloys mainly consisting of a combination of more than one type of metal, and the stem portion and the umbrella portion are made of an Fe-based alloy, a Co-based alloy, a Ni-based alloy, or a Ni-based alloy.
1. A valve for an engine, which is coated with any one of the base alloys, and wherein a coating portion formed on the outside of the stem portion is thinner than a coating portion formed on the outside of the umbrella portion.
、Ｔｉ、Ｍｇ、Ａｌからなる金属のうち少なくとも２種
類以上の金属の組み合わせを主体とする合金のうちいず
れかの合金を用いた基体部用材料に、Ｆｅ基合金、Ｃｏ
基合金、Ｎｉ基合金のうちいずれかの合金からなる被覆
材料を密封被覆したビレット部材を形成する第１の工程
と、 前記第１工程で形成したビレット部材を冷間状態あるい
は熱間状態で傘部とステム部とに成形する第２の工程と
、 からなることを特徴とするエンジン用バルブの製造方法
。(2) Substrate using any one of Ti-based alloys, Mg-based alloys, Al-based alloys, or alloys mainly composed of a combination of at least two metals of Ti, Mg, and Al. Part materials include Fe-based alloy, Co
A first step of forming a billet member hermetically coated with a coating material made of either a base alloy or a Ni-based alloy, and heating the billet member formed in the first step in a cold or hot state. A method for manufacturing an engine valve, comprising: a second step of molding into a stem portion and a stem portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14705090A JPH0441909A (en) | 1990-06-05 | 1990-06-05 | Valve for engine and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14705090A JPH0441909A (en) | 1990-06-05 | 1990-06-05 | Valve for engine and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0441909A true JPH0441909A (en) | 1992-02-12 |
Family
ID=15421368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14705090A Pending JPH0441909A (en) | 1990-06-05 | 1990-06-05 | Valve for engine and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0864730A1 (en) * | 1997-03-11 | 1998-09-16 | Fuji Oozx Inc. | Inlet valve in an internal combustion engine and a method of manufacturing the same |
| JP2007040123A (en) * | 2005-08-01 | 2007-02-15 | Aisan Ind Co Ltd | Engine valve and its manufacturing method |
-
1990
- 1990-06-05 JP JP14705090A patent/JPH0441909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0864730A1 (en) * | 1997-03-11 | 1998-09-16 | Fuji Oozx Inc. | Inlet valve in an internal combustion engine and a method of manufacturing the same |
| JP2007040123A (en) * | 2005-08-01 | 2007-02-15 | Aisan Ind Co Ltd | Engine valve and its manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3157822B2 (en) | Titanium poppet valve | |
| EP1462621B1 (en) | Composite lightweight engine poppet valve | |
| JP3287916B2 (en) | Joint structure of valve seat | |
| JP3372568B2 (en) | Exhaust valve of diesel engine and method of manufacturing the same | |
| US5692726A (en) | Bonded valve seat | |
| JPH08246821A (en) | Valve seat | |
| JP2017210658A (en) | HEAT-RESISTANT Ti ALLOY AND HEAT-RESISTANT Ti ALLOY MATERIAL | |
| JP3546261B2 (en) | Dissimilar metal materials joining method | |
| US2403926A (en) | Sheathed valve | |
| JP5015393B2 (en) | Engine valve with seat overlay and manufacturing method thereof | |
| EP0543353A1 (en) | Method for producing an inlet or exhaust valve for internal combustion engine | |
| US5144885A (en) | Ceramic-metal friction welding member and ceramic cast-in bonded piston made thereof | |
| JPH0441909A (en) | Valve for engine and manufacture thereof | |
| EP3578282A1 (en) | Sliding member, and sliding member of internal combustion engine | |
| JP4449981B2 (en) | Multi-piece composite valve for internal combustion engines | |
| JPS6176742A (en) | Valve-seatless light alloy cylinder head | |
| JP3143111B2 (en) | Method for manufacturing valve of internal combustion engine | |
| JP3187876B2 (en) | Method of joining composite material at least partially composed of intermetallic compound | |
| JPH09317413A (en) | Joining type valve seat | |
| JP2843661B2 (en) | Ti-Al based composite material | |
| JP2005066656A (en) | Manufacturing method of member made of metal containing titanium | |
| JP3191162B2 (en) | Method of manufacturing intake / exhaust valve for internal combustion engine | |
| JPH0874657A (en) | Cylinder head and its manufacture | |
| JPH0494889A (en) | Ti-al series alloy-made engine valve | |
| JPS6216184B2 (en) |