JPS60260482A - Structure for bonding ceramic axis and metal axis - Google Patents
Structure for bonding ceramic axis and metal axisInfo
- Publication number
- JPS60260482A JPS60260482A JP11729084A JP11729084A JPS60260482A JP S60260482 A JPS60260482 A JP S60260482A JP 11729084 A JP11729084 A JP 11729084A JP 11729084 A JP11729084 A JP 11729084A JP S60260482 A JPS60260482 A JP S60260482A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- axis
- metal
- ceramic
- notch
- 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
Landscapes
- Supercharger (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】
（技術分野）
この発明は、セラミック軸と金属軸とをロー付により接
合する構造に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a structure for joining a ceramic shaft and a metal shaft by brazing.
（従来技術）
自動車用ターボチャージャのタービンロータ等に耐熱性
に優れるセラミックスが使用されてきているが、成形後
の加工性が悪く、また部分的な変形力に弱いので、コン
プレッサ側のインペラを取付けるロータ軸までもセラミ
ックスで形成することは難しい。(Prior art) Ceramics with excellent heat resistance have been used for turbine rotors of automobile turbochargers, etc., but they have poor workability after molding and are weak against local deformation forces, so it is difficult to attach the impeller on the compressor side. It is difficult to form even the rotor shaft with ceramics.
そこで従来、第３図に示寸にうに、セラミックスでター
ビン（図示しない）と一体成形した軸（セラミツル軸）
１に金属からなる軸（金属軸）２を突合わせ、ロー（＝
ｌにより接合するにうにしたものが提案されている（特
願昭５７−２２０２９５号参照）。Conventionally, a shaft (ceramic shaft) was made of ceramic and integrally molded with the turbine (not shown) as shown in Fig. 3.
1 and metal shaft (metal shaft) 2 are butted together, and the row (=
A structure in which the bonding is made by joining by means of 1 has been proposed (see Japanese Patent Application No. 57-220295).
この場合、金属−２の突合ぜ部４は、セラミック軸１の
（支）合せ部３の軸径と同径に形成され、゛これらの突
合わせ部３．４がロー付により全周接合される。なお、
しラミック軸１側の接合力を良好に保つようにセラミッ
ク軸１側に所定の開先が設けられる。In this case, the abutting portion 4 of the metal 2 is formed to have the same diameter as the (support) abutting portion 3 of the ceramic shaft 1, and these abutting portions 3.4 are joined all around by brazing. Ru. In addition,
A predetermined groove is provided on the ceramic shaft 1 side so as to maintain good bonding force on the ceramic shaft 1 side.
これによれば、インペラを取付けるネジ加工等が嚇易に
なると共に、ネジ部が破損することを防止できる。According to this, it becomes easier to perform screw machining for attaching the impeller, and it is possible to prevent the screw portion from being damaged.
しかしながら、このような接合構造にあっては、セラミ
ックと金属とで熱膨張率がかなり違うため（例えばセラ
ミツ゛りの線膨張係数は２．８Ｘ１０６、鋼の線膨張係
数は１１Ｘ１’Ｏ’ ぐ−らい）、ロー付した後の冷却
過程において比較的強い収縮応力がセラミック軸１に加
わることは避（）られず、このためセラミックｌ１４１
１の外周部にクラック（割れ）が入りやＪいという問題
かぁ−〕だ。したがって、不良宰が高く、集溜りが悪化
していた。However, in such a joint structure, the coefficient of thermal expansion is quite different between ceramic and metal (for example, the coefficient of linear expansion of ceramic is 2.8X106, and the coefficient of linear expansion of steel is about 11X1'O'). ), it is unavoidable that a relatively strong shrinkage stress is applied to the ceramic shaft 1 during the cooling process after brazing.
The problem is that there are cracks on the outer periphery of 1. As a result, the number of delinquents was high and the number of residents was worsening.
（発明の目的）
この発明ＩＪｌ、このようなりラックの光住を防井（る
ことを目的としている。(Object of the Invention) The object of this invention is to prevent such a rack from being exposed to light.
〈発明の開示〉
この発明は、セラミック軸と金属軸とをロー付により突
合せ接合でる構造において、ロー付部近傍の金属軸にロ
ー付部に治って切欠部を設け、この切欠部によりロー付
時に生じる収縮応力を吸収させる。<Disclosure of the Invention> The present invention provides a structure in which a ceramic shaft and a metal shaft are butt-joined by brazing, in which a notch is provided in the metal shaft near the brazed part, and the notch allows the brazing to be performed. Absorb the shrinkage stress that sometimes occurs.
（実施例）
第１図は本発明の実施例を承り凹ΔＩＳ断面図で、５は
Ｕ″＞ミック軸、６は金属軸を示覆。(Embodiment) Fig. 1 is a concave ΔIS sectional view of an embodiment of the present invention, where 5 indicates a U''>mick axis, and 6 indicates a metal axis.
この金属軸６は、第３図と同球突合Ｖ部８がセラミック
軸５の突合せ部７の軸ｔＭと同径どなるように形成され
、これらの突合ぜ部７，８がロー付により全周接合され
るようになっている。This metal shaft 6 is formed so that the spherical abutting V portion 8 has the same diameter as the axis tM of the abutting portion 7 of the ceramic shaft 5 as shown in FIG. It is designed to be joined.
イして、本実施例では、この金属軸６の突合わせ部８の
外周部に予め切欠部９が形成される３この切欠部９はス
リッｌ〜状の渦からなり、セラミック軸５とのロー付部
１０の近傍に、ロー６１部１０に治って設番ノられる。Therefore, in this embodiment, a notch 9 is formed in advance on the outer periphery of the abutting portion 8 of the metal shaft 6.3 This notch 9 consists of a slit-shaped vortex, and is connected to the ceramic shaft 5. In the vicinity of the brazed part 10, a number is installed on the brazed part 10 of the brazed part 61.
１
この場合、切欠部９は全周に股ＩＪられ、まＩ−イの深
さはセラミック軸５に形成した開先よりいくらか深くな
るように形成される。1. In this case, the notch 9 is formed around the entire circumference, and the depth of the groove is somewhat deeper than the groove formed in the ceramic shaft 5.
したがって、セラミック軸５と金属軸６の突合ぜ部７．
８をｎ−（：１により接合したどき（ご［１−ｆ−１部
１０（”Ｊ近に熱応力がケじ、これが冷７ＪＩ過程（・
収縮応力となって軸５．６に作用するが、「ｌ−何部１
０近傍に切欠部９を設り／、： ７Ｊめ、イの熱応力、
１３よび収縮応力が切欠部９に」、り吸収されるの（あ
る。Therefore, the abutting portion 7 of the ceramic shaft 5 and the metal shaft 6.
When 8 is joined by n-
It becomes a shrinkage stress and acts on the axis 5.6, but "l-how many parts 1
A notch 9 is provided near 0/: Thermal stress of 7J and A,
13 and shrinkage stress are absorbed by the notch 9.
このため、ｎ−ｆ＝Ｊによる強い収縮応力かｔ・ノミツ
ク軸５に加わるようなこと（まなく、セラミック軸５の
クラックの腎（１−を確実に防１１Ｃ′さ、このＶ。Therefore, strong shrinkage stress caused by n-f=J is applied to the ceramic shaft 5 (11C'), and this V reliably prevents cracking of the ceramic shaft 5 (1-).
果良好な接合強度Ｊ３よび良好な外観が得られ、集溜り
の向上が図れる。As a result, a good joint strength J3 and a good appearance can be obtained, and the accumulation can be improved.
第２図は本発明の他の実施例で、切欠部１１の形状を断
面略（１字形にしたものである。FIG. 2 shows another embodiment of the present invention, in which the shape of the notch 11 is approximately 1-shaped in cross section.
この場合、切欠部１１の幅は前記実施例Ｊ：す６人さく
Ｑるが、これによれば軸使用ａ４に応力梁中が緩和され
、軸強度が高められる。In this case, the width of the cutout portion 11 is set to 6 mm in the above-mentioned embodiment J, and according to this, the stress in the beam is alleviated when the shaft is used a4, and the shaft strength is increased.
（発明の効果）
（−１−付番）によるクラックの発生を防止でひ、軸強
度の向上ど、接合集溜りの向上が図れるという効果があ
る。(Effects of the Invention) It is possible to prevent the occurrence of cracks due to (-1-numbering), improve the shaft strength, and improve joint retention.
第１図は本発明の実施例を示す要部断面図、第２図は本
発明の他の実施例を示１１廿部断面図、第３図は従来例
の断面図である。
５・・・しラミック軸、６・・・金属軸、９・・・切欠
部、１０・・・ロー付部、１１・・・切欠部。
第１図
第２図
第３図FIG. 1 is a cross-sectional view of a main part showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of another embodiment of the present invention, and FIG. 3 is a cross-sectional view of a conventional example. 5... Lamic shaft, 6... Metal shaft, 9... Notch part, 10... Brazed part, 11... Notch part. Figure 1 Figure 2 Figure 3
Claims (1)
により突合せ接合する構造において、ロー付部近傍の金
属軸にロー付部に沿って切欠部を設Ｃ−ノたことを特徴
とするセラミック軸と金属軸の接合ＷＩ造。A ceramic having a structure in which a shaft made of ceramic and a shaft made of metal are butt-joined by brazing, characterized in that the metal shaft near the brazed part is provided with a notch along the brazed part. WI structure with jointed shaft and metal shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11729084A JPS60260482A (en) | 1984-06-07 | 1984-06-07 | Structure for bonding ceramic axis and metal axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11729084A JPS60260482A (en) | 1984-06-07 | 1984-06-07 | Structure for bonding ceramic axis and metal axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60260482A true JPS60260482A (en) | 1985-12-23 |
Family
ID=14708086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11729084A Pending JPS60260482A (en) | 1984-06-07 | 1984-06-07 | Structure for bonding ceramic axis and metal axis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60260482A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63139077A (en) * | 1986-12-02 | 1988-06-10 | 工業技術院長 | Method of joining different kind materials of different thermal expansion coefficient |
| US4798320A (en) * | 1985-09-20 | 1989-01-17 | Allied-Signal Inc. | Ceramic-metal brazed joint for turbochargers |
| US4988034A (en) * | 1987-12-25 | 1991-01-29 | Ngk Spark Plug Co., Ltd. | Mechanical part having ceramic and metal sections soldered together and method of producing same |
| US5351874A (en) * | 1990-07-06 | 1994-10-04 | Hoechst Ceramtec Ag | Method of joining a ceramic component to a metal component |
-
1984
- 1984-06-07 JP JP11729084A patent/JPS60260482A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798320A (en) * | 1985-09-20 | 1989-01-17 | Allied-Signal Inc. | Ceramic-metal brazed joint for turbochargers |
| JPS63139077A (en) * | 1986-12-02 | 1988-06-10 | 工業技術院長 | Method of joining different kind materials of different thermal expansion coefficient |
| US4988034A (en) * | 1987-12-25 | 1991-01-29 | Ngk Spark Plug Co., Ltd. | Mechanical part having ceramic and metal sections soldered together and method of producing same |
| US5351874A (en) * | 1990-07-06 | 1994-10-04 | Hoechst Ceramtec Ag | Method of joining a ceramic component to a metal component |
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