JPH0372802B2 - - Google Patents
Info
- Publication number
- JPH0372802B2 JPH0372802B2 JP61223674A JP22367486A JPH0372802B2 JP H0372802 B2 JPH0372802 B2 JP H0372802B2 JP 61223674 A JP61223674 A JP 61223674A JP 22367486 A JP22367486 A JP 22367486A JP H0372802 B2 JPH0372802 B2 JP H0372802B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- ceramic
- cylindrical part
- cylindrical
- ceramic shaft
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本願発明は、ターボチヤージヤやガスタービン
等各種機器に用いられる軸における、セラミツク
軸と金属軸の接合技術に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a technology for joining ceramic shafts and metal shafts in shafts used in various devices such as turbochargers and gas turbines.
近年、自動車のターボチヤージヤ等には、耐熱
性向上および軽量化等の見地から、SiC，Si3N4
等のセラミツク焼結体が多く用いられている。
In recent years, SiC, Si 3 N 4 has been used for automobile turbochargers etc. from the viewpoint of improving heat resistance and reducing weight.
Ceramic sintered bodies such as these are often used.
従来、このような機器におけるセラミツク軸と
金属軸との接合部は、
両軸の端部のうち一方を筒状に形成し、該筒
状部内に他方の軸を焼嵌めする方法
セラミツク軸の表面にメタライジング処理を
施したうえで、銀鑞等の硬鑞を用いて金属軸を
鑞付けする方法
接着剤で両軸を接着する方法
等によつて接合がなされている。 Conventionally, the joint between the ceramic shaft and the metal shaft in such devices has been achieved by forming one of the ends of both shafts into a cylindrical shape, and shrink-fitting the other shaft into the cylindrical portion.The surface of the ceramic shaft After applying metallizing treatment to the metal shaft, the metal shaft is brazed using a hard solder such as silver solder, or the two shafts are bonded together using an adhesive.
しかし、上記従来の接合方法のうち、第１の焼
嵌めによるものは、接合部である一方の軸の筒状
部と他方の軸の端部の寸法精度を相当厳しく管理
する必要があり、すなわちセラミツクは比較的脆
いことから、寸法精度に少しでも誤差があると部
分的に過大な焼嵌め応力が生じて割れが起こるた
め、小さな嵌合力しか得られず、十分な接合強度
を持たすことができない問題がある。また第２の
鑞付けによるものは、メタライジング処理工程を
必要とするほか、鑞付け部分が酸化すると付きが
悪いことから、真空中或いは中性雰囲気中で鑞付
けを行なう必要があり、生産性に問題がある。さ
らに、第３の接着剤によるものは、接合力等信頼
性に乏しく、耐熱性にも劣り、接着の際の作業性
も悪いといつた問題がある。
However, among the above-mentioned conventional joining methods, the first one using shrink fitting requires very strict control of the dimensional accuracy of the cylindrical part of one shaft and the end of the other shaft, which are the joint parts, i.e. Ceramic is relatively brittle, so if there is even the slightest error in dimensional accuracy, excessive shrink-fitting stress will occur locally and cause cracks, resulting in only a small fitting force being obtained and insufficient bonding strength. There's a problem. In addition, the second method of brazing requires a metallizing process, and since oxidation of the soldered part causes poor adhesion, it is necessary to perform the brazing in a vacuum or in a neutral atmosphere, which reduces productivity. There is a problem. Furthermore, those using the third adhesive have problems such as poor bonding strength and other reliability, poor heat resistance, and poor workability during bonding.
本願は、以上の問題点に鑑み、セラミツク軸に
割れ等が生じることがなく、確実な接合力を得る
ことができる新規接合方法を開示するものであ
る。 In view of the above-mentioned problems, the present application discloses a new bonding method that can obtain reliable bonding force without causing cracks or the like in the ceramic shaft.
すなわち本願発明のセラミツク軸と金属軸の接
合方法は、金属軸の端部にセラミツク軸を挿入可
能な筒状部を形成するとともに、該筒状部の開口
端部内周面および筒状部への挿入状態において該
開口端部内周面と対応するセラミツク軸の挿入部
外周面のうちいずれか一方に、筒状部と挿入部の
対接面間を密封するパツキングを装着し、該パツ
キングの内側におけるセラミツク軸の外周面に凹
凸面を形成し、セラミツク軸端部の挿入部を金属
軸端部の筒状部に挿入して仮接合した後、筒状部
外周面に冷間静水圧を行なうものである。
That is, the method of joining a ceramic shaft and a metal shaft of the present invention forms a cylindrical portion into which the ceramic shaft can be inserted at the end of the metal shaft, and also forms a cylindrical portion into which the ceramic shaft can be inserted. A packing that seals between the contact surfaces of the cylindrical part and the insertion part is attached to one of the outer circumferential surfaces of the insertion part of the ceramic shaft that corresponds to the inner circumferential surface of the opening end in the inserted state, and A method in which an uneven surface is formed on the outer peripheral surface of a ceramic shaft, and after the insertion part of the ceramic shaft end is inserted into the cylindrical part of the metal shaft end and temporarily joined, cold hydrostatic pressure is applied to the outer peripheral surface of the cylindrical part. It is.
上記方法において、セラミツク軸端部の挿入部
を金属軸端部の筒状部に挿入することによつて仮
接合すると、該筒状部と挿入部との対接面の間は
パツキングによつて密封される。したがつて、該
仮接合状態において冷間静水圧加圧を行なうと、
加圧水は前記対接面間に入り込むことがないた
め、筒状部は外側から等方加圧されて縮径方向に
塑性変形し、このとき、前記対接面間に僅かに介
在する残留エアはセラミツク軸外周面に形成した
凹凸面と前記筒状部内周面との間に逃げ込むこと
ができるため、前記凹凸面に食い込むようにして
セラミツク軸端部に強固に圧着する。
In the above method, when the insertion part of the ceramic shaft end is temporarily joined by inserting it into the cylindrical part of the metal shaft end, the contact surface between the cylindrical part and the insertion part is formed by packing. sealed. Therefore, when cold isostatic pressurization is performed in the temporary bonded state,
Since pressurized water does not enter between the contact surfaces, the cylindrical portion is isostatically pressurized from the outside and is plastically deformed in the radial direction, and at this time, the residual air slightly interposed between the contact surfaces is Since it can escape between the uneven surface formed on the outer circumferential surface of the ceramic shaft and the inner circumferential surface of the cylindrical portion, it is firmly crimped to the end of the ceramic shaft by biting into the uneven surface.
以下、本願発明方法をターボチヤージヤの回転
軸について適用した実施例を、図面に基いて説明
する。
Hereinafter, an embodiment in which the method of the present invention is applied to a rotation shaft of a turbocharger will be described with reference to the drawings.
第１図において、１はセラミツク焼結体製ター
ビンロータ７の回転中心から一体的に延設成形さ
れたセラミツク軸、５は金属インペラ８が軸着さ
れた金属軸である。該金属軸５のセラミツク軸１
との対向端部には、あらかじめ、該セラミツク軸
１を挿入可能な筒状部６を形成し、一方セラミツ
ク軸１は、あらかじめ、筒状部６への挿入部１′
の先端部外周面および挿入状態において筒状部６
の開口端部６′と対応する部分の外周面にＯリン
グ溝２ａ，２ｂを形成してそれぞれパツキングと
してのＯリング３ａ，３ｂを装着するとともに、
Ｏリング溝２ａ，２ｂの間の部分の外周面に多数
の溝４を形成してなる。 In FIG. 1, 1 is a ceramic shaft integrally formed to extend from the center of rotation of a turbine rotor 7 made of a ceramic sintered body, and 5 is a metal shaft on which a metal impeller 8 is attached. Ceramic shaft 1 of said metal shaft 5
A cylindrical part 6 into which the ceramic shaft 1 can be inserted is formed in advance at the end opposite to the cylindrical part 6.
The outer circumferential surface of the distal end and the cylindrical part 6 in the inserted state.
O-ring grooves 2a, 2b are formed on the outer circumferential surface of the portion corresponding to the opening end 6', and O-rings 3a, 3b are attached as packing, respectively.
A large number of grooves 4 are formed on the outer peripheral surface of the portion between the O-ring grooves 2a and 2b.
次に、金属軸５の筒状部６内へセラミツク軸１
の挿入部１′を挿入することによつて、第２図に
示すように両軸１，５の仮接合を行ない、しかる
後、この仮接合状態の両軸１，５を図示しない冷
間静水圧加圧装置の加圧室内に収納して1500Kg／
cm2程度の圧力で静水圧加圧を行なう。このとき、
筒状部６と挿入部１′の対接面間はＯリング３ａ，
３ｂによつて密封状態にあり、加圧水Ｗが該対接
面間に浸入することがないため、筒状部６はその
外周側の加圧水Ｗにより全面が均等に加圧されて
冷間圧延され、該筒状部６内周面は、多数の溝４
によつて凹凸面をなすセラミツク軸１の挿入部
１′外周面に圧着する。しかもこのとき、前記対
接面間に僅かに介在する残留エアは前記凹凸面と
前記筒状部６内周面との間に逃げ込んで圧縮さ
れ、筒状部６が前記凹凸面に食い込むようにして
圧着するので、両軸１，５は強固に接合される。 Next, the ceramic shaft 1 is inserted into the cylindrical portion 6 of the metal shaft 5.
By inserting the insertion part 1', the shafts 1 and 5 are temporarily joined as shown in FIG. 1500Kg/ when stored in the pressure chamber of the water pressure device
Perform hydrostatic pressurization at a pressure of about cm 2 . At this time,
Between the facing surfaces of the cylindrical part 6 and the insertion part 1' is an O-ring 3a,
3b, and the pressurized water W does not enter between the contact surfaces, the entire surface of the cylindrical portion 6 is uniformly pressurized by the pressurized water W on the outer circumferential side and cold-rolled. The inner peripheral surface of the cylindrical portion 6 has a large number of grooves 4.
The insertion portion 1' of the ceramic shaft 1 is crimped onto the outer circumferential surface of the insertion portion 1', which has an uneven surface. Moreover, at this time, residual air slightly interposed between the contact surfaces escapes between the uneven surface and the inner peripheral surface of the cylindrical portion 6 and is compressed, so that the cylindrical portion 6 bites into the uneven surface. Since the shafts 1 and 5 are crimped together, the shafts 1 and 5 are firmly joined.
なお、セラミツク軸１の挿入部１′と金属軸５
の筒状部６の対接面間を密封するＯリング３ａ，
３ｂを装着するためのＯリング溝２ａ，２ｂは、
第３図に他の実施例として示すように、筒状部６
側に設けてもよく、その他本願発明方法の要旨を
変えない範囲での種々の変更は何ら差仕えない。 Note that the insertion portion 1' of the ceramic shaft 1 and the metal shaft 5
an O-ring 3a for sealing between the opposing surfaces of the cylindrical portion 6;
O-ring grooves 2a and 2b for attaching O-ring 3b are
As shown in FIG. 3 as another embodiment, the cylindrical portion 6
It may be provided on the side, and various other changes may be made without changing the gist of the method of the present invention.
以上説明したように、本願発明は、金属軸に形
成した筒状部に、セラミツク軸を挿入して仮接合
し、この筒状部とセラミツク軸挿入部との対接面
間を密封したうえで、前記筒状部を冷間静水圧加
圧して前記挿入部外周面に圧着させることによ
り、両軸を接合するもので、セラミツク軸に形成
した凹凸面によつて前記対接面間の残留エアの逃
げ部を設けたことから、接合強度を確保するため
に加圧時に熱処理を施して対接面間に介在する残
留エアを拡散除去するといつた工程を必要とせ
ず、接合時に割れ等が発生するのを確実に防止す
ることができ、また、あらかじめ締め代を設けて
嵌合するものではないため、両軸接合部の寸法精
度を厳しく管理する必要もなく、作業性が大幅に
向上するといつた優れた効果を奏する。
As explained above, in the present invention, a ceramic shaft is inserted into a cylindrical portion formed on a metal shaft and temporarily joined, and the contact surfaces between the cylindrical portion and the ceramic shaft insertion portion are sealed. , the two shafts are joined by pressurizing the cylindrical portion with cold isostatic pressure to the outer peripheral surface of the insertion portion, and the uneven surface formed on the ceramic shaft prevents residual air between the contact surfaces. Since the relief part is provided, there is no need for heat treatment during pressurization to ensure bonding strength to diffuse and remove residual air between the opposing surfaces, which can cause cracks during bonding. In addition, since the fitting is not performed with a tightening margin in advance, there is no need to strictly control the dimensional accuracy of the joint of both shafts, and work efficiency is greatly improved. It has excellent effects.
第１図は本願発明方法の一実施例における接合
前の工程を示す断面図、第２図は同じく接合工程
を示す断面図、第３図は他の実施例を示す断面図
である。
１……セラミツク軸、２ａ，２ｂ……Ｏリング
溝、３ａ，３ｂ……パツキングとしてのＯリン
グ、４……溝、５……金属軸、６……筒状部、
６′……開口端部、Ｗ……加圧水。
FIG. 1 is a cross-sectional view showing a step before bonding in one embodiment of the method of the present invention, FIG. 2 is a cross-sectional view also showing the bonding step, and FIG. 3 is a cross-sectional view showing another embodiment. 1... Ceramic shaft, 2a, 2b... O-ring groove, 3a, 3b... O-ring as packing, 4... Groove, 5... Metal shaft, 6... Cylindrical part,
6'...open end, W...pressurized water.
Claims (1)
状部を形成するとともに、該筒状部の開口端部内
周面および筒状部への挿入状態において該開口端
部内周面と対応するセラミツク軸の挿入部外周面
のうちいずれか一方に、筒状部と挿入部の対接面
間を密封するパツキングを装着し、該パツキング
の内側におけるセラミツク軸の外周面に凹凸面を
形成し、セラミツク軸端部の挿入部を金属軸端部
の筒状部に挿入して仮接合した後、筒状部外周面
に冷間静水圧加圧を行なうことを特徴とするセラ
ミツク軸と金属軸の接合方法。1. A cylindrical part into which a ceramic shaft can be inserted is formed at the end of the metal shaft, and a ceramic part corresponding to the inner circumferential surface of the open end of the cylindrical part and the inner circumferential surface of the open end when inserted into the cylindrical part. A packing for sealing the contact surface between the cylindrical part and the insertion part is attached to one of the outer circumferential surfaces of the insertion part of the shaft, and an uneven surface is formed on the outer circumference of the ceramic shaft inside the packing. Joining of a ceramic shaft and a metal shaft characterized by inserting the insertion part of the shaft end into the cylindrical part of the metal shaft end and temporarily joining, and then applying cold isostatic pressure to the outer peripheral surface of the cylindrical part. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22367486A JPS6380002A (en) | 1986-09-24 | 1986-09-24 | Method of jointing ceramic shaft to metal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22367486A JPS6380002A (en) | 1986-09-24 | 1986-09-24 | Method of jointing ceramic shaft to metal shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6380002A JPS6380002A (en) | 1988-04-11 |
| JPH0372802B2 true JPH0372802B2 (en) | 1991-11-19 |
Family
ID=16801868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22367486A Granted JPS6380002A (en) | 1986-09-24 | 1986-09-24 | Method of jointing ceramic shaft to metal shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6380002A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043176U (en) * | 1990-04-24 | 1992-01-13 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652502A (en) * | 1979-09-18 | 1981-05-11 | Gen Motors Corp | Production of combined radial turbine impeller |
| JPS5793606A (en) * | 1980-12-02 | 1982-06-10 | Mitsubishi Heavy Ind Ltd | Impeller and manufacturing method thereof |
| JPS5730301B2 (en) * | 1974-05-24 | 1982-06-28 | ||
| JPS59113203A (en) * | 1982-11-12 | 1984-06-29 | エムテイ−ユ−・モトレン−ウント・タ−ビネン−ユニオン・ミユンヘン・ジ−エムビ−エツチ | Connection part of ceramic rotary member and metal rotary part for jet engine and fabrication thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730301U (en) * | 1980-07-28 | 1982-02-17 | ||
| JPS59131501U (en) * | 1983-02-23 | 1984-09-04 | 株式会社小松製作所 | Centrifugal turbocharger rotor shaft connection device |
-
1986
- 1986-09-24 JP JP22367486A patent/JPS6380002A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730301B2 (en) * | 1974-05-24 | 1982-06-28 | ||
| JPS5652502A (en) * | 1979-09-18 | 1981-05-11 | Gen Motors Corp | Production of combined radial turbine impeller |
| JPS5793606A (en) * | 1980-12-02 | 1982-06-10 | Mitsubishi Heavy Ind Ltd | Impeller and manufacturing method thereof |
| JPS59113203A (en) * | 1982-11-12 | 1984-06-29 | エムテイ−ユ−・モトレン−ウント・タ−ビネン−ユニオン・ミユンヘン・ジ−エムビ−エツチ | Connection part of ceramic rotary member and metal rotary part for jet engine and fabrication thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6380002A (en) | 1988-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6278172A (en) | Bonded structure of ceramic to metal | |
| FR2536119A1 (en) | ASSEMBLY OF A ROTARY CERAMIC ELEMENT WITH A METALLIC ROTATING ELEMENT FOR TURBO-MACHINES, IN PARTICULAR FOR A GAS TURBINE PROPELLER AND DEVICE FOR IMPLEMENTING THE SAME | |
| GB2289429A (en) | Hollow component manufacture | |
| JP2531708Y2 (en) | Ceramic / metal composite | |
| JP2752768B2 (en) | Joint structure of turbine rotor | |
| JPH0372802B2 (en) | ||
| JPS63139075A (en) | Ceramic-metal joined body, manufacture and joining apparatus | |
| US6264091B1 (en) | Method of manufacturing an article by diffusion bonding | |
| US4758112A (en) | Rotary shaft assembly | |
| JPS6311242A (en) | Method of bonding ceramic and metal | |
| JPS6191073A (en) | Structure for bonding ceramic axis and metal axis | |
| JPH0526575B2 (en) | ||
| JPS5983984A (en) | Silicon nitride sintered body and metal bonding method | |
| JPH0431772B2 (en) | ||
| JPS62118119A (en) | Joint structure of ceramic shaft and metal shaft | |
| JPS61219766A (en) | Joint structure of ceramic shaft and metal shaft | |
| JP2677009B2 (en) | Connection structure between thin-walled tube and metal tube | |
| JPH04289764A (en) | Fabrication of damper for superconducting generator | |
| JP3431392B2 (en) | Tappet | |
| JPH01141882A (en) | Method for bonding ceramic to metallic member | |
| JPH0338401Y2 (en) | ||
| JPS6136181A (en) | Method of bonding ceramic member ot metal member | |
| JPH0351321Y2 (en) | ||
| JP2526885B2 (en) | Composite ring made of ceramic ring and metal ring | |
| JP2974936B2 (en) | Method of joining metal and ceramic, joining structure and gas turbine provided with this joining structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |