JPS61127673A - Double layer ceramic lining process - Google Patents

Double layer ceramic lining process

Info

Publication number
JPS61127673A
JPS61127673A JP24665584A JP24665584A JPS61127673A JP S61127673 A JPS61127673 A JP S61127673A JP 24665584 A JP24665584 A JP 24665584A JP 24665584 A JP24665584 A JP 24665584A JP S61127673 A JPS61127673 A JP S61127673A
Authority
JP
Japan
Prior art keywords
ceramics
ceramic
ceramic member
metal
tapered
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
JP24665584A
Other languages
Japanese (ja)
Inventor
高尾　武
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.)
KOUSHINRAIDO HAKUYO SUISHIN PL
KOUSHINRAIDO HAKUYO SUISHIN PLANT GIJUTSU KENKYU KUMIAI
Original Assignee
KOUSHINRAIDO HAKUYO SUISHIN PL
KOUSHINRAIDO HAKUYO SUISHIN PLANT GIJUTSU KENKYU KUMIAI
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 KOUSHINRAIDO HAKUYO SUISHIN PL, KOUSHINRAIDO HAKUYO SUISHIN PLANT GIJUTSU KENKYU KUMIAI filed Critical KOUSHINRAIDO HAKUYO SUISHIN PL
Priority to JP24665584A priority Critical patent/JPS61127673A/en
Publication of JPS61127673A publication Critical patent/JPS61127673A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Landscapes

  • Connection Of Plates (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Ceramic Products (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】 産業上の利用分野 本発明は複層セラミックスのライニング方法に関するも
のである◎ 従来の技術 例えば、船舶用大型ディーゼル機関の燃焼室部材を断熱
化する場合、セラミックスを用いることが得策であるが
、セラミックスをそのまま使用することはセラミックス
の特性上不可能に近い。そこで、外力を金属で持たせ、
セラミックスをその上にライニングする方法が考えられ
る。しかし。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a multilayer ceramic lining method. ◎ Conventional technology For example, when insulating combustion chamber members of large diesel engines for ships, ceramics are used. However, using ceramics as is is almost impossible due to the characteristics of ceramics. Therefore, by using metal to hold the external force,
One possible method is to line it with ceramics. but.

現在あるセラミックスは、断熱性に優れたセラミックス
（例えばジルコニア）は裔温では強度が低い一万、高温
強度に優れたセラミックス（例えば窒化けい素）は断熱
性が悪く、二つの条件を満足するものは見当らない。し
たがって、耐熱側に置温強度に優れたセラミックスを用
い、金属側に金属との接合性に優れかつ断熱性に優れた
セラミックスを用いるいわゆる複層セラミックスのライ
ニング方法が考えられる。このライニング方法について
は従来から既に種々提案されており、その主なものは、
線膨張係数の異なる二種のセラミックスを接合するのに
、焼ばめあるいはボルト止めを採用していた。Currently available ceramics satisfy two conditions: ceramics with excellent heat insulation properties (e.g. zirconia) have low strength at low temperatures, and ceramics with excellent high temperature strength (e.g. silicon nitride) have poor heat insulation properties. I can't find it. Therefore, a so-called multi-layer ceramic lining method can be considered, in which the heat-resistant side uses ceramics that have excellent standing strength, and the metal side uses ceramics that have excellent bonding properties with metal and excellent heat insulation properties. Various lining methods have already been proposed, the main ones being:
Shrink fitting or bolting was used to join two types of ceramics with different coefficients of linear expansion.

発明が解決しようとする問題点 しかしながら、上記従来の複層セラミックスのライニン
グ方法によると、折れ曲り構造のセラミ　、ツクスを用
いなければならない場合、形状の変化部に高い応力が発
生するという問題があった。また、高温状態で熱変形が
生じ、これによりクリアランスが発生したり、外力付加
によるクラック発生の虞れがあるという問題があった。Problems to be Solved by the Invention However, according to the above-mentioned conventional multilayer ceramic lining method, there is a problem that high stress is generated in the part where the shape changes when ceramic or tux having a bent structure has to be used. Ta. Further, there is a problem that thermal deformation occurs in a high temperature state, which may cause a clearance or cracks to occur due to the application of external force.

本発明はこ゛のような問題を解決する複層セラミックス
のライニング方法を提供することを目的とする。The object of the present invention is to provide a method for lining multilayer ceramics that solves these problems.

問題を解決するための手段 上記問題を解決するため２本発明の複層セラミックスの
ライニング方法は、折ｎ曲り構造で線膨張係数の異なる
二種のセラミックスを接合する複層セラミックスのライ
ニング方法であって、一方のセラミックスを分割し、そ
の互いに接合する端面同志に互いに逆向きのテーパを付
与して押し込み接合するようにした。Means for Solving the Problems In order to solve the above-mentioned problems, the method for lining multilayer ceramics of the present invention is a method for lining multilayer ceramics in which two types of ceramics having an n-folded structure and different linear expansion coefficients are bonded together. Then, one of the ceramics was divided, and the end faces to be joined to each other were tapered in opposite directions, and then joined by pressing.

作用 すなわち、耐熱側セラミックスを複数に分割し。action In other words, the heat-resistant ceramic is divided into multiple parts.

互いのテーパ端面を突き合わせるようにして接合すると
、テーパ端面の働きによって分割セラミックス片の抜は
出しが防止され、かつ接合部分で応力集中の緩和が行わ
れることになる。When joined so that their tapered end faces butt each other, the action of the tapered end faces prevents the divided ceramic pieces from being pulled out and relieves stress concentration at the joined portion.

実施例 以下１本発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described below with reference to the drawings.

第１図および＠２図は１本発明方法をディーゼル機関の
ピストンクラウンに適用した例を示す。Figures 1 and 2 show an example in which the method of the present invention is applied to a piston crown of a diesel engine.

図において、（１）は金属母材で、上面中央部に皿状の
凹部（２）が形成されるとともに、この凹部（２）外周
に切欠き段部（３）が形成されている。（４）は金属母
材（１）の皿状凹部（２）に載置された折れ曲り構造の
第１セラミックス部材で、金属母材（１）と線膨張係数
が等しいか近似の部材すなわち金属との接合性、断熱性
に優れた部材で構成され、金属母材（１）とは適当な接
着剤によって接着せしめられている。（５）は第１セラ
ミックス部材（４）および金属母材（１）の切欠き段部
（３〕上にわたって載置（非接着）された折れ曲り構造
の第２セラミックス部材で、小円板状の内側分割片（６
）と、筒状の外側分割片（７）と１両者の間に位置する
リング板状の中間分割片（８）の三つに分割されている
。この場合、内側分割片（６）は外周面（９）に上端は
ど径が小さくなるテーパが付与され。In the figure, (1) is a metal base material, and a dish-shaped recess (2) is formed in the center of the upper surface, and a cutout step (3) is formed on the outer periphery of this recess (2). (4) is a first ceramic member with a bent structure placed in the dish-shaped recess (2) of the metal base material (1), and is a member with a coefficient of linear expansion equal to or similar to that of the metal base material (1), that is, a metal It is made of a member with excellent bondability and heat insulation properties, and is bonded to the metal base material (1) with a suitable adhesive. (5) is a second ceramic member with a bent structure that is placed (non-adhered) over the first ceramic member (4) and the notch step (3) of the metal base material (1), and has a small disk shape. inner divided piece (6
), a cylindrical outer dividing piece (7), and a ring plate-shaped intermediate dividing piece (8) located between the two. In this case, the outer peripheral surface (9) of the inner divided piece (6) is tapered so that the diameter becomes smaller at the upper end.

この外周テーパ面（９）に接合する中間分割片（８）の
内周面σＱに該外周テーパ面（９）と逆向きのテーパが
付与されている。また、切欠き段部（３）の立上り面回
と、第１セラ疋ツクス部材（４）の外周面（６）と、中
間分割片（８）の外周面口は面一に構成され、かつ内側
分割片（６）の外周テーパ面（９）より急な傾斜で上端
はど径が小さくなるテーパがそれぞれ付与されている。The inner circumferential surface σQ of the intermediate divided piece (8) joined to the outer circumferential tapered surface (9) is tapered in the opposite direction to the outer circumferential tapered surface (9). Further, the rising surface of the notch step (3), the outer circumferential surface (6) of the first ceramic member (4), and the outer circumferential surface of the intermediate divided piece (8) are configured to be flush with each other, and Each of the inner divided pieces (6) is tapered with a steeper slope than the outer circumferential tapered surface (9) and has a smaller diameter at the upper end.

そして、このテーパ面σ■Ｉに接合する外側分割片（７
）の内周面σ尋に該テーパ面ＣＬＩ　ａ　ａ４１と逆向
きのテーパが付与されている。第２セラミックス部材（
５）は第１セラミックス部材（４）と線膨張係数が異な
る高温強度に優れた部材で構成される。　。Then, the outer divided piece (7
) is tapered in the opposite direction to the tapered surface CLI a a41. Second ceramic member (
5) is composed of a member having a different coefficient of linear expansion from the first ceramic member (4) and having excellent high-temperature strength. .

なお、第１セラミックス部材（４）も第２セラミックス
部材（５）と同様に分割してもよい。（ト）は第１セラ
ミックス部材（４Ｊと第２セラミックス部材（５）の間
に介装された断熱緩衝材で、この断熱緩衝材αＱは必要
に応じて設けられる。Ｑｌは外側分割片（７）の外周面
適所に貫通して設けられたピン挿入孔、ａηはこのピン
挿入孔ａＱを通して金属母材（１）に螺入せしめられた
金属製回転可能ピンである。Note that the first ceramic member (4) may also be divided in the same manner as the second ceramic member (5). (G) is a heat insulating buffer material interposed between the first ceramic member (4J) and the second ceramic member (5), and this heat insulating buffer material αQ is provided as necessary. Ql is the outer divided piece (7 ) is a rotatable metal pin screwed into the metal base material (1) through the pin insertion hole aQ.

第８図は金属製回転可能ピンＣＩηの詳細を示す。FIG. 8 shows details of the metal rotatable pin CIη.

図からも明らかなように１金属製回転可能ピンαηは、
先端に球状部に）を備えた本体部分αりと１球状部（ト
）に回転自在に取付けられたねじ部分−とから構成され
、軸心部に本体部分ａ呻からねじ部分−の中間部に至る
角孔（ロ）が形成されている。As is clear from the figure, 1 metal rotatable pin αη is
It consists of a main body part (a) with a spherical part at its tip (a) and a threaded part rotatably attached to the one spherical part (g), and an intermediate part between the main body part (a) and the threaded part at the axial center. A square hole (b) is formed leading to .

以下、上記構成における組立て手順について説明する。Below, the assembly procedure for the above configuration will be explained.

先ず、金属母材（１）の皿状凹部（２）に第１セラミッ
クス部材（４］を載置、接着する。次に、＠１セラミッ
クス部材（４）の上に断熱緩衝材（ト）を載せる。次に
。First, the first ceramic member (4) is placed and adhered to the dish-shaped recess (2) of the metal base material (1).Next, a heat insulating cushioning material (T) is placed on top of the @1 ceramic member (4). I'll post it.Next.

断熱緩衝材（ト）の中心部に第２セラミックス部材（５
）の内側分割片（６）を載置し、さらにその外周に中間
分割片（８）をテーパ面（９）　（１１３同志を突き合
わせるようにして載置する。そして、切欠き段部（３月
と外側分割片（７）を載置し、ピン挿入孔ＱＱに金属製
回転可能ピンα力を挿入して、そのねじ部分（ホ）を金
属母材（υに螺入する。金属製回転可能ピンσηの挿入
、ねじ込みは角孔（イ）に角棒を挿入して容易に行うこ
とができる・ これにより、第１および第２セラミックス部材（４１（
５）は金属母材（１）に固定され、かつ第２セラミック
ス部材（５）の分割片（６）　（８）はそｎぞれテーパ
面の突き合わせにより抜は出しが防止される。そして。A second ceramic member (5) is placed in the center of the heat insulating cushioning material (G).
) is placed on the inner divided piece (6), and furthermore, the intermediate divided piece (8) is placed on the outer periphery of the inner divided piece (6) so that the tapered surface (9) (113) butts against each other. Place the moon and outer divided piece (7), insert the metal rotatable pin α force into the pin insertion hole QQ, and screw the threaded part (E) into the metal base material (υ.Metal rotation Insertion and screwing of the pin ση can be easily done by inserting a square rod into the square hole (A). As a result, the first and second ceramic members (41 (
5) is fixed to the metal base material (1), and the divided pieces (6) and (8) of the second ceramic member (5) are prevented from being pulled out by abutting their tapered surfaces. and.

各接合部分で応力集中の緩和が行われることになる。ま
た１本実施例によればセラミックスに特にねじを切る必
要がなく（単なる貫通孔でよい）。Stress concentration will be alleviated at each joint. Furthermore, according to this embodiment, there is no need to particularly cut a thread in the ceramic (a simple through hole is sufficient).

焼ばめを行う必要もないので、容易に施できるほか、第
２セラミックス部材（５）の外側分割片（７）を金属母
材（１）に固定するのに、特殊構造の金属製回転可能ビ
ンαηを用いるので、金属母材（υと第２セラミックス
部材（５〕の熱膨張差を良好に吸収することができる。There is no need to perform shrink fitting, so it can be easily applied, and a specially structured metal rotatable member is used to fix the outer divided piece (7) of the second ceramic member (5) to the metal base material (1). Since the bin αη is used, the difference in thermal expansion between the metal base material (υ) and the second ceramic member (5) can be well absorbed.

発明の効果 以上１本発明の方法によれば、分割セラミックス片の接
合部分で応力集中を緩和することができ。Effects of the Invention According to the method of the present invention, stress concentration can be alleviated at the joint portion of the divided ceramic pieces.

クリアランスやクラックの発生を防ぐことができる。ま
た、セラミックスの大型化に伴う強度低下を防ぐことが
できる。Clearance and cracks can be prevented from occurring. Further, it is possible to prevent a decrease in strength due to an increase in the size of ceramics.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示し、第１図は本発明方法を
適用したピストンクラウンの断面図、第２図は開平面図
、＠８図は金属性回転可能ビンの断面図である。 （１戸−・金属母材、（４）−・・第１セラミツクス部
材、（５）・・・第２セラミツクス部材、（９）σ（）
（Ｉη＠賂σ◆・・・テーパ面The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view of a piston crown to which the method of the present invention is applied, FIG. 2 is an open plan view, and FIG. 8 is a sectional view of a metal rotatable bottle. (1 house - Metal base material, (4) - First ceramic member, (5) - Second ceramic member, (9) σ ()
(Iη＠Gyakuσ◆・・・Tapered surface

Claims (1)

【特許請求の範囲】[Claims] １、折れ曲り構造で線膨張係数の異なる二種のセラミッ
クスを接合する複層セラミックスのライニング方法であ
つて、一方のセラミックスを分割し、その互いに接合す
る端面同志に互いに逆向きのテーパを付与して押し込み
接合することを特徴とする複層セラミックスのライニン
グ方法。1. A multilayer ceramic lining method in which two types of ceramics with different coefficients of linear expansion are bonded in a bent structure, in which one ceramic is divided and the end surfaces to be bonded are tapered in opposite directions. A lining method for multilayer ceramics characterized by press-joining.
JP24665584A 1984-11-20 1984-11-20 Double layer ceramic lining process Pending JPS61127673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24665584A JPS61127673A (en) 1984-11-20 1984-11-20 Double layer ceramic lining process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24665584A JPS61127673A (en) 1984-11-20 1984-11-20 Double layer ceramic lining process

Publications (1)

Publication Number Publication Date
JPS61127673A true JPS61127673A (en) 1986-06-14

Family

ID=17151644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24665584A Pending JPS61127673A (en) 1984-11-20 1984-11-20 Double layer ceramic lining process

Country Status (1)

Country Link
JP (1) JPS61127673A (en)

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