JPS5895674A - Joint structure of ceramic member and metal member - Google Patents

Joint structure of ceramic member and metal member

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Publication number
JPS5895674A
JPS5895674A JP19231081A JP19231081A JPS5895674A JP S5895674 A JPS5895674 A JP S5895674A JP 19231081 A JP19231081 A JP 19231081A JP 19231081 A JP19231081 A JP 19231081A JP S5895674 A JPS5895674 A JP S5895674A
Authority
JP
Japan
Prior art keywords
metal
piston
ceramic
joint
head
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
Application number
JP19231081A
Other languages
Japanese (ja)
Inventor
清 内田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP19231081A priority Critical patent/JPS5895674A/en
Publication of JPS5895674A publication Critical patent/JPS5895674A/en
Pending legal-status Critical Current

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  • Ceramic Products (AREA)
  • Powder Metallurgy (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明鉱セラ電ツクス製部材と金属製部材との接合部構
造に係)、特にセラミックス製部材に鋳ぐるみ法によっ
て金属製部材を接合してなる接合部の構造に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a joint structure between an ore-ceramic electrical member and a metal member), and particularly relates to a joint structure formed by joining a metal member to a ceramic member by a casting method. It is something.

近年セラミックスは優れた耐熱性、耐食性等の特性から
大いに注目を集めておシ、各種の機械部品に適用されつ
つある。
In recent years, ceramics have attracted much attention due to their excellent heat resistance, corrosion resistance, and other properties, and are being applied to various mechanical parts.

このようなものの1つに1セ2電ツクス製ピストンヘツ
ドを金属で鋳ぐるんで形成したピストンがある。しかし
ながら、このピストン拡製造時にピストン本体を形成す
べき金属溶湯が凝固するとき、七う建ツクス製ヘッドが
締付力を受けて割れてしまうという問題がある。この問
題に対処する方法として、セラきツクス製ピストンヘッ
ドと金属製ピストン本体の間に金属製リングを介装して
、金属溶湯011WAK停う締付力をこのリングで吸収
緩和する方法がある(it’llえば特願ws54−2
1!10号)。
One such type of piston is a piston formed by enclosing a piston head made of 1/2 electronics with metal. However, when the molten metal that forms the piston body solidifies during the expansion of the piston, there is a problem in that the seven-frame head is subjected to the tightening force and cracks. One way to deal with this problem is to insert a metal ring between the ceramic piston head and the metal piston body, and use this ring to absorb and alleviate the clamping force caused by the molten metal. It'll be special application ws54-2
1! No. 10).

しかしながら、上記の方法ではセラミックスの割れは防
止できるものの、平滑な外周面を有するリングを使用す
るため、リングとピストン本体と01ll!着性あるい
はり/グ′とセラミックス製ピストンヘッドとの緊着性
が不充分である。このため、リングと金属製ピストン本
体の熱**率の差あるいは金属のへた夛によシ、リング
とピストンヘッドあるいはピストン本体との間にすき間
が生じて、長期間使用しているとピストンヘッドがしば
しば脱落するという問題がある。
However, although the above method can prevent ceramic cracking, it uses a ring with a smooth outer circumferential surface, so the difference between the ring and the piston body! The adhesion or tightness between the glue/glue and the ceramic piston head is insufficient. For this reason, due to the difference in heat** rate between the ring and the metal piston body or due to the deterioration of the metal, a gap may occur between the ring and the piston head or piston body, and if the piston is used for a long period of time, the piston There is a problem that the head often falls off.

これを解決するものとして次のものが本出願人よp既に
出願されている(以下「先願」という)。
As a solution to this problem, the following application has already been filed by the present applicant (hereinafter referred to as the "earlier application").

即ち、外周面に沿って涙状凹部を設けたセラミックス製
ピストンヘッドと、該ピストンヘッドの環状凹部に対応
させた凸部を内周面に有し且つ外周面に沿って溝、凹凸
、またはピストン本体側の径を大きくした段もしくはテ
ーパー等の抜叶防止手段を設は丸金属製リングとを嵌会
し、この嵌合物をピストン本体と一体的に鋳ぐるんだこ
とを4I徽トスるピストンヘッド部構造、である。
That is, the piston head has a ceramic piston head with a tear-shaped recess along the outer circumferential surface, a convex portion on the inner circumferential surface corresponding to the annular recess of the piston head, and a groove, unevenness, or piston along the outer circumferential surface. A means to prevent the piston from coming out, such as a step or taper with a larger diameter on the main body side, is fitted with a round metal ring, and this fitting is integrally cast with the piston main body. This is the piston head structure.

5111図はこの先願に係るピストン1の断面図でTo
p1ディーゼル機関等に1!!用す゛るためのものであ
る。アル電合金製ピストン本体20頭面3には中央に凹
部4が形成されている。この凹部4には外周をアンパ製
金属リング5で覆われた窒化珪素製ピストンヘッド6が
嵌合している。第1図のピストンを製造するには、予め
ピストンヘッド6にリング5を嵌鋏し、これをピストン
本体用の鉤部に入れてアル(合金で一体的に鋳ぐるみ、
ピストン本体2と緊着させる。鋳造で得九未加エピスト
ンの外周等を加工してピストン1を得る。
Figure 5111 is a sectional view of the piston 1 according to this earlier application.
1 for p1 diesel engines, etc. ! It is for your own use. A recess 4 is formed in the center of the head surface 3 of the piston body 20 made of aluminum alloy. A piston head 6 made of silicon nitride whose outer periphery is covered with a metal ring 5 made of Ampa is fitted into the recess 4 . To manufacture the piston shown in Fig. 1, the ring 5 is fitted onto the piston head 6 in advance, and the ring 5 is inserted into the hook for the piston body.
Tightly attach it to the piston body 2. A piston 1 is obtained by processing the outer periphery of the unfinished piston obtained by casting.

このように構成された先願のピストンlによれば、鋳ぐ
るみ時のアル電合金の収縮によるピストンヘッド6への
締付力が金属製す/グ6の剛性力によって緩和されるの
で、セ2ζツクス製ピストンヘッド6に割れが生ずるこ
とがなく、またリング50段部51の保合作用によ)ヘ
ッド6の脱落−防止される。
According to the piston l of the prior application constructed in this way, the clamping force on the piston head 6 due to the contraction of the aluminum alloy during casting is alleviated by the rigid force of the metal ring 6, so that the separator No cracks occur in the piston head 6 made of 2ζTx, and the head 6 is prevented from falling off due to the retaining action of the ring 50 and the stepped portion 51.

しかるにこの先願のものにおいては、セツンツクスとア
ル電エクム合金と0熱膨張率に差があることから、鋳ぐ
るみ工程の冷却過@における収縮によ〕、ピストン本体
20111面3と、ピストンヘッド6との関に間g97
が生ずる慮れがある。この部分に間[I7を生ずれば、
混合気が該関l[7に流入し圧縮比O低下等の可能性も
生ずる。
However, in this prior application, since there is a difference in zero thermal expansion coefficient between Setuntsux and Aruden Ekumu alloy, the piston body 20111 surface 3 and the piston head 6 due to shrinkage during cooling during the casting process. G97
There is a possibility that this will occur. If a pause [I7 is generated in this part,
There is also a possibility that the air-fuel mixture will flow into the connection 1[7 and the compression ratio O will drop.

またこのような鋳ぐるみ工程の冷却過程において、接合
面に間隙が生ずることは、ピストンに限らず、鋳ぐるみ
法によって接合されるセラミックス製部材と金属m1i
i材との接合部に一般的に生じ得る問題点である。
In addition, during the cooling process of such a casting process, the occurrence of gaps at the joint surface is not limited to pistons, but also occurs when ceramic members and metal m1i are joined by the casting process.
This is a problem that can generally occur at joints with i-materials.

本発明の目的は、このような従来技術Q問題点を岬消し
、鋳ぐるみ工程の冷却過程において、接合される部材間
に外部に通じた間隙の生じることが防止される、七?<
ツクス脚部材と金属製部材との接合部構造を提供するに
ある。
The purpose of the present invention is to eliminate such problems of the prior art, and to prevent the formation of gaps leading to the outside between members to be joined during the cooling process of the casting process. <
The present invention provides a joint structure between a Tux leg member and a metal member.

本発明は、七2ζツクス製部材と金属製部材とが接合さ
れてなシ、セラミックス製部′#O接合面の中央部は凸
部とされ金属製部材O接合面の中央部紘該凸部に対応し
た形状0rjAllとされたセラミックス製部材と金属
製部材とOS舎部構造において、両部材の接合面緻部紘
七ツ電ツクス製部材儒に傾斜した傾斜面とされているこ
とを特徴とするセラきツクス製部材と金属製部材とOV
a合部構造1によって仁の目的を達成するものである。
In the present invention, the 72ζx member and the metal member are not joined, and the central part of the ceramic part'#O joint surface is a convex part. In the structure of the ceramic member, metal member, and OS part, each of which has a shape corresponding to Cerakics parts, metal parts and OV
This purpose is achieved by the joint structure 1.

以下図面を参照して実施例を説明する。Examples will be described below with reference to the drawings.

第2図は本発明の実施例に係るピストン11の断面図で
ある。
FIG. 2 is a sectional view of the piston 11 according to the embodiment of the present invention.

このビスシン11d3111図の従来例と同様に、ピス
トン本体12、セラミックス属のピストンヘッド16、
咳ヘッド16の凸部伺周函に配設された金属製リングt
Sを有している。
Similar to the conventional example shown in FIG.
A metal ring t arranged around the convex part of the cough head 16
It has S.

しかしてピストン本体12とヘッド1@との接金wO周
縁部は傾斜i[1−とされ、との傾斜面!―轄リすグl
5OR部111Lを指向している。
Therefore, the peripheral edge of the weld wO between the piston body 12 and the head 1@ has an inclination i[1-, which is an inclined surface! -Registered Group
5OR section 111L.

第意図のピストン11は、次のようにして製造され丸も
のである。まず、第鵞1mK示1れるようにピストン本
体12との接金面周縁IIK傾斜面が形成され九セフ々
ツクス製(本実施例において拡窒化珪素製)のピストン
ヘッド16を製作する。
The intended piston 11 is manufactured in the following manner and is round. First, a piston head 16 made of Kusefukus (made of expanded silicon nitride in this embodiment) is manufactured, in which an inclined surface IIK is formed on the peripheral edge of the contact surface with the piston main body 12, as shown in Fig. 1mK.

このヘッド16C)凸部16&の稠周部に、2つ割りに
された金属製りング15を嵌装する。これを600℃に
予熱後、湯温700℃のアル1=ウム合金により鋳ぐる
みし、ピストン本体12と緊着させる。鋳造で得たもの
を研削等仕上加工する。
A metal ring 15, which is divided into two parts, is fitted into the circumference of the convex portion 16& of the head 16C. After preheating this to 600° C., it is cast in an aluminum alloy with a hot water temperature of 700° C., and is tightly attached to the piston body 12. Finishing processing such as grinding is performed on the material obtained by casting.

このようにして得られるピストン11においては、鋳ぐ
るみ工程の冷却過程に際して生ずるアルミニク五合金の
大なる収縮は、傾斜面1Bに沿い、段部15aに向うよ
うになる。そのため冷却によってピストン本体12とヘ
ッド16との間の傾斜面18の部分には間隙が生ずるこ
とがない。1*ζO♂ストン11を加熱しても、ピスト
ン本体12011!IIは傾斜1ii1Bにaうように
なシ、そのためピストン11を繰り返し加熱、冷却して
も傾斜面180部分に間隙が生ずることはない。
In the piston 11 obtained in this manner, the large contraction of the aluminum five-alloy that occurs during the cooling process of the casting process is directed toward the stepped portion 15a along the inclined surface 1B. Therefore, no gap is formed between the piston body 12 and the head 16 at the inclined surface 18 due to cooling. Even if the 1*ζO♂ stone 11 is heated, the piston body is 12011! II is aligned with the slope 1ii1B, so that even if the piston 11 is repeatedly heated and cooled, no gap will be formed in the slope 180 portion.

1kか本実施例においては、傾斜@1Bはリング150
段部15亀を指向している。鋳ぐるみ後の冷却に際して
は、通常この段部15aが収縮の拘束点となることから
、傾斜面18が該段部151を指向していることによっ
て、eストン本体12の収縮社確実に傾斜面181沿う
ようになる。
1k or in this example, the slope @ 1B is ring 150
Step 15 is facing the turtle. During cooling after casting, the stepped portion 15a normally acts as a constraint point for shrinkage, so by having the inclined surface 18 facing the stepped portion 151, the shrinkage of the e-stone body 12 is ensured by the inclined surface. 181.

また、ピストン本体12とヘッド16との間には空i1
1?が存在するが、これは外部には通じていないから、
前述のような混合気流人等の不具合は生じない。
Moreover, there is an air space i1 between the piston body 12 and the head 16.
1? exists, but this is not communicated to the outside,
Problems such as mixed air flow as described above do not occur.

第5図は本発明の他の実施例に係るロッカーアーム21
の断面図でらる。
FIG. 5 shows a rocker arm 21 according to another embodiment of the present invention.
A cross-sectional view of

このロッカーアーム21は、セラミックス製のロッカー
/譬ツド22に、ロッカーアーム本体25を鋳ぐるんで
製造されたものである。このパッド22はアーム本体2
Sとの接合面に凸部221が設けられ、この凸部221
の先端部は拡大部22bとされている。
This rocker arm 21 is manufactured by casting a rocker arm body 25 into a rocker/mold 22 made of ceramics. This pad 22 is the arm body 2
A convex portion 221 is provided on the joint surface with S, and this convex portion 221
The tip end is an enlarged part 22b.

しかして/fラッド2とアーム本体23との接合面周縁
部はΔラド22儒に傾斜した傾斜面24とされている。
Thus, the peripheral edge of the joint surface between the /f rad 2 and the arm body 23 is an inclined surface 24 inclined at Δrad 22 degrees.

この傾斜面24はパッド凸部22aの段部22ot指向
している。
This inclined surface 24 is oriented toward the stepped portion 22ot of the pad convex portion 22a.

本実施例においても、鋳ぐるみ□ 工程の冷却過程におけるアー 五本体意3の収縮は傾斜N24に沿うようにな〕、傾斜
面240部分マ゛杜アーム本体23とパッド22との間
tC間蒙祉生じない。
In this embodiment as well, the contraction of the arm body 3 during the cooling process of the casting process is along the slope N24], and the tC distance between the slope 240 portion and the arm body 23 and the pad 22 is reduced. There is no welfare benefit.

上記実施例においては、セ2?ツクスとして窒化珪素が
採用されているが、これ紘炭化珪素、tイアロン、アル
iす等各種のものが採用されうる。
In the above embodiment, Se2? Silicon nitride is used as the material, but various materials such as silicon carbide, iron, aluminum, etc. can also be used.

本発明社、ピストン、ロッカーアーム以外の金属製部材
とセラミックス製部材との接合部にも適用可能である。
The invention is also applicable to joints between metal members and ceramic members other than pistons and rocker arms.

このような4のとして例えばターボロータシャフト、ガ
スタービンシャフト等が挙げられる。
Examples of such shafts include a turbo rotor shaft, a gas turbine shaft, and the like.

以上の通p本発町のセラミックス製部材と金属製部材と
の接合部構造によれば間隙の生じない接金が可能とされ
る。そOため接合部の強度が着しく向上され、41に接
合面と喬直方向の耐圧力が格段に向上される。
According to the above-mentioned structure of the joint between the ceramic member and the metal member produced by Honbatsu-cho, welding can be performed without creating a gap. Therefore, the strength of the joint is significantly improved, and the withstand pressure in the direction perpendicular to the joint surface is significantly improved.

4、l11m0簡単なII!明 IE1図は従来例に係るピストンの断面図、第2閣は本
発明O実施例に係るピストンの断面図、第3図は同じく
実施例に係る騨ツカーアームの断面図である。
4, l11m0 Easy II! Figure IE1 is a sectional view of a piston according to a conventional example, Figure 2 is a sectional view of a piston according to an embodiment of the present invention, and Figure 3 is a sectional view of a locking arm according to an embodiment.

l…ピストン、     ト・・ピストン本体、3・・
・i[Ii%        4・・・凹部、ト・・リ
ング、      6・・・ピストンヘッド、7・・・
隙間、       11・・・ピストン、!2・・・
ピストン本体、  15・・・リング、16・・・ピス
トンヘッド、1@a・・・凸部、18・・・傾斜面、 
    !1・・・ロッカーアーム、2!2・・・o 
ツー)y−パッド、2ト・・ロッカーアーム本体、24
・・・傾斜面。
l...piston, g...piston body, 3...
・i [Ii% 4... Concavity, ring, 6... Piston head, 7...
Gap, 11...Piston! 2...
Piston body, 15...Ring, 16...Piston head, [email protected] portion, 18...Slanted surface,
! 1...Rocker arm, 2!2...o
2) Y-pad, 2 to...rocker arm body, 24
...Slope surface.

代理人  鵜  沼  辰  之 (ほか!4) 第1図 6 第2図 第3図 印Agent: Cormorant, Tatsu, Numa (And more! 4) Figure 1 6 Figure 2 Figure 3 mark

Claims (1)

【特許請求の範囲】 (1)  セラミックス製部材と金属製部材とが接合さ
れてなシ、セラ建ツクス製部材の接合面の中央部は凸部
とされ金属製部材の接合面の中央部Fi該凸部に対応し
た形状の凹部とされたセラきツクス製部材と金属製部材
との接合部構造において、両部材の接合IIi縁部縁部
クセフォックス製部材側斜した傾斜面とされていること
を特徴とするセラミックス製部材と金属製部材との接合
部構造。 偉) 前記七フィックス製部材の凸部先端部は拡大部と
され、前記傾斜面は該拡大部又はその近傍を指向してい
ることを特徴とする特許請求の範囲第1項記載のセラミ
ックス製部材と金属製部材との接合部構造。 (3)  前記セラミックス製部材の凸部側周面と、金
属製部材の凹部側局面と、の関には該凸部先端方向が拡
大部とされた金属製の介在部材が配設され、前記傾斜1
iliは腋介在部材の、拡大部又はその近傍を指向して
いることを特徴とする特許請求の範囲第1項記載のセラ
ミックス製部材と金属製部材との接合部構造。
[Claims] (1) The ceramic member and the metal member are not joined, and the central part of the joint surface of the ceramic member is a convex part, and the central part Fi of the joint surface of the metal member is a convex part. In the structure of the joint between the Serakix member and the metal member, which has a concave portion having a shape corresponding to the convex portion, the joint IIi edge of both members has an inclined surface that is inclined toward the Xefox member side. A joint structure between a ceramic member and a metal member, characterized by: (b) The ceramic member according to claim 1, wherein the tip of the convex portion of the seven-fix member is an enlarged portion, and the inclined surface is oriented at or near the enlarged portion. Joint structure between and metal parts. (3) A metal intervening member is disposed between the circumferential surface of the convex side of the ceramic member and the concave side circumferential surface of the metal member, and the intervening member made of metal has an enlarged portion in the direction of the distal end of the convex portion; slope 1
2. The joint structure of a ceramic member and a metal member according to claim 1, wherein ili is oriented at or near the enlarged part of the armpit intervening member.
JP19231081A 1981-11-30 1981-11-30 Joint structure of ceramic member and metal member Pending JPS5895674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19231081A JPS5895674A (en) 1981-11-30 1981-11-30 Joint structure of ceramic member and metal member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19231081A JPS5895674A (en) 1981-11-30 1981-11-30 Joint structure of ceramic member and metal member

Publications (1)

Publication Number Publication Date
JPS5895674A true JPS5895674A (en) 1983-06-07

Family

ID=16289140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19231081A Pending JPS5895674A (en) 1981-11-30 1981-11-30 Joint structure of ceramic member and metal member

Country Status (1)

Country Link
JP (1) JPS5895674A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506069A1 (en) * 1984-02-28 1985-09-12 NGK Insulators Ltd., Nagoya, Aichi MACHINE PART FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
WO1996009266A1 (en) * 1994-09-22 1996-03-28 Sumitomo Electric Industries, Ltd. Bonded body of aluminum and silicon nitride and production method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506069A1 (en) * 1984-02-28 1985-09-12 NGK Insulators Ltd., Nagoya, Aichi MACHINE PART FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
JPS60180969A (en) * 1984-02-28 1985-09-14 日本碍子株式会社 Engine part and manufacture
JPH0518779B2 (en) * 1984-02-28 1993-03-12 Ngk Insulators Ltd
WO1996009266A1 (en) * 1994-09-22 1996-03-28 Sumitomo Electric Industries, Ltd. Bonded body of aluminum and silicon nitride and production method thereof
US5904993A (en) * 1994-09-22 1999-05-18 Sumitomo Electric Industries, Ltd. Joint body of aluminum and silicon nitride and method of preparing the same

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