JPS5969480A - Ceramic doubletube and manufacture - Google Patents
Ceramic doubletube and manufactureInfo
- Publication number
- JPS5969480A JPS5969480A JP17855882A JP17855882A JPS5969480A JP S5969480 A JPS5969480 A JP S5969480A JP 17855882 A JP17855882 A JP 17855882A JP 17855882 A JP17855882 A JP 17855882A JP S5969480 A JPS5969480 A JP S5969480A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- ceramic
- titanium
- inner tube
- outer tube
- 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
- Ceramic Products (AREA)
- Laminated Bodies (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】
開示技術は耐蝕性二重管の構造と製造技術の分野に属す
る。DETAILED DESCRIPTION OF THE INVENTION The disclosed technology is in the field of corrosion-resistant double-pipe construction and manufacturing technology.
而して、この出I唄の発明は耐蝕耐圧二重管が外Wを炭
素鋼専の金属管で内管がセラミックであり、両管が強固
に結合されているものとその製造方法に関する発明であ
り、特に、セラミック内管外側に活性の大きいチタン箔
を添設し、更に該チタンと金属外管との間にはろう材を
介設して高温高圧の拡散溶接によりチタンはセラミック
に拡散し、チタンはろう付を介して金属外管に結合され
るようにしたセラミック二重管とその製造方法に係る発
明である。Therefore, the invention of this first song is an invention relating to a corrosion-resistant and pressure-resistant double pipe in which the outer W is a metal pipe made of carbon steel and the inner pipe is made of ceramic, and both pipes are firmly connected, and a method for manufacturing the same. In particular, highly active titanium foil is added to the outside of the ceramic inner tube, and a brazing material is interposed between the titanium and the metal outer tube, and titanium is diffused into the ceramic by high-temperature, high-pressure diffusion welding. However, the present invention relates to a ceramic double tube in which titanium is bonded to a metal outer tube through brazing, and a method for manufacturing the same.
周知の如く、石油産業、原子力産業等多くの産業に於て
は腐蝕性流体の処理、輸送には配管が用いられ、その過
程での耐圧、耐熱に加えて耐蝕、耐摩耗性を具備させる
ようにされ、これに合う耐圧耐蝕管が用いられているが
、1つの材料でこれを満たすことが技術的に出来なかっ
たり、コスト伯に引き合わない場合があり、したがって
、耐圧、耐熱性は外管に具備させ、耐蝕、耐摩拝性は内
管に持たせるようにした二重管が採用されている。As is well known, piping is used to process and transport corrosive fluids in many industries such as the petroleum industry and the nuclear industry, and piping is designed to have not only pressure and heat resistance but also corrosion and wear resistance during this process. However, there are cases where it is not technically possible to meet this requirement with one material, or the cost does not match, so the pressure and heat resistance is lower than that of the outer tube. A double pipe is used, with the inner pipe providing corrosion and wear resistance.
而して、これまで一般に外管は炭素鋼等で内省はステン
レス等で、即ち、内外両管とも金属管て作られたものを
用いるようにして来たが、材料科学の進展に伴い、より
耐蝕性に優れ、軽量であり、熱膨張係数が小さく、熱挙
動が少いものが開発実用化されるようになり、そのうち
、セラミックがクローズアップさ41.て来ている。Up until now, the outer tube has generally been made of carbon steel, etc., and the inner tube has been made of stainless steel, etc., in other words, both the inner and outer tubes have been made of metal, but with advances in material science, Products with better corrosion resistance, lighter weight, lower coefficient of thermal expansion, and less thermal behavior are being developed and put into practical use, and among them, ceramics are attracting attention. It's coming.
この1易合、例えば、第1図に示す様に炭素鋼外管1に
セラミック内管2を嵌装し、二重管3を作るのに焼はめ
等の手段て結合させていたために機械的結合で結合力が
充分でなく、軸づれを生じたり、不均一な圧力分布のた
め割れを起したりする欠点があった。In this case, for example, as shown in Fig. 1, a ceramic inner tube 2 is fitted onto a carbon steel outer tube 1, and the double tube 3 is bonded by means such as shrink fitting. There were disadvantages in that the bonding strength was not sufficient, causing axis misalignment, and cracking due to uneven pressure distribution.
これに代えて溶射等の手段もあるが、機械的強度が光分
てない不具合があり、又、ろう付けによる冶金的結合を
行うとするとセラミックに対するろうイ」けが確実に行
われ難い難点があった。Alternatively, there are methods such as thermal spraying, but there is a problem that the mechanical strength is not determined by light, and if metallurgical bonding is performed by brazing, it is difficult to ensure that the solder does not damage the ceramic. Ta.
この出願の発明の目的は上述在来技術に基つくセラミッ
ク内管結合二東管の問題点を解決すべき技術的課題とし
、セラミック内管を金属外管に冶金的に結合出来るよう
にし、二重管本来の機能は勿論、セラミックの利点をそ
のま5生かすことが出来るようにし、信頼性の高い二重
管を形成することが出来、各種産業における配管利用分
野に益rることか出来るようにした1憂れたセラミック
二重管及びその製造方法を提供ぜんとするものである。The purpose of the invention of this application is to solve the problems of the above-mentioned conventional ceramic inner tube-coupled two-east tube, to make it possible to metallurgically bond the ceramic inner tube to the metal outer tube, and to solve the two problems. In addition to the original function of the double pipe, it is possible to take advantage of the advantages of ceramics, and it is possible to form a highly reliable double pipe, which can be beneficial in the field of piping application in various industries. The present invention aims to provide a ceramic double tube and a method for manufacturing the same.
上述目的に沿い前記特許請求の範囲を要旨とするこの出
願の発明の構成は上述問題点を解決するためにセラミッ
ク内管を内側に外側に炭素鋼等の外管との間に該セラミ
ック側に箔状、或いは、粉末状のチタンを、又、外管側
に銀等のろう材を介設して素材管とし、該素材管を拡散
浴接装置に七ツ1−シ、高温、高圧を介してチタンはセ
ラミックとろう材に拡散し、ろう材は該チタン箔と金属
外管を接合し、これによりセラミック内管と金属外管は
冶金的に結合され強度も保証され、又、該ろう材が金属
外管とセラミック管との間・2高縣溶融充填するため冷
却後セラミック内管・に圧縮残留応力を印加し、稼動中
割れを防止するように機能し、セラミックの軽量さ、熱
膨張係数の小さSによる熱挙動の少なさの性能を充分発
揮させることが出来るようにした技術的手段を講じたも
のである。In order to solve the above-mentioned problems, the invention of this application, which is based on the above-mentioned claims in accordance with the above-mentioned object, is designed to solve the above-mentioned problems by connecting the ceramic inner tube to the ceramic side between the inner tube and the outer tube made of carbon steel or the like. Foil or powdered titanium is used as a material tube by interposing a brazing material such as silver on the outer tube side, and the material tube is placed in a diffusion bath welding device seven times and subjected to high temperature and high pressure. The titanium diffuses into the ceramic and the brazing material, and the brazing material joins the titanium foil and the metal outer tube, thereby metallurgically bonding the ceramic inner tube and the metal outer tube to ensure strength. The material applies compressive residual stress to the ceramic inner tube after cooling because it melts and fills the space between the metal outer tube and the ceramic tube, and functions to prevent cracking during operation. Technical measures have been taken to fully utilize the performance of low thermal behavior due to the small coefficient of expansion S.
次にこの出願の発明の実施例を第2図以下の図面に従っ
て説明すれは以下の通りである。尚、第1図に示す部分
と同一態様部分については同一符号を利して説明するも
のとする。Next, embodiments of the invention of this application will be described below with reference to the drawings from FIG. 2 onwards. Note that the same reference numerals will be used to describe the same parts as those shown in FIG.
まず、第2図に示す様に予め設定径の管状の銀ろう4を
加温拡径して同じく管状の設定径のチタン箔5に相対重
層嵌合し常温状態にしておく。First, as shown in FIG. 2, a tubular silver solder 4 having a predetermined diameter is expanded by heating and then fitted into a titanium foil 5, which is also tubular and has a predetermined diameter, in a relatively overlapping manner and kept at room temperature.
これに対しておいたものに高温拡径した炭素鋼外管1と
冷却縮径したセラミック内管2を相対重層させて素材管
3′を形成する。On the other hand, a carbon steel outer tube 1 whose diameter has been enlarged at high temperature and a ceramic inner tube 2 whose diameter has been reduced by cooling are layered relative to each other to form a material tube 3'.
該素材管3′はその後常温状態にすれば機械的に低層す
る。The material tube 3' is then mechanically lowered when it is brought to room temperature.
そこで、第6図に示す様に周知の拡散溶接装置6に該素
材管3′を所定にセツトシ、第4図に示す様に素材管3
′の全表面にパック材7を被覆し、所謂141P接合を
行う。Therefore, as shown in FIG. 6, the material tube 3' is set in a well-known diffusion welding device 6 at a predetermined position, and as shown in FIG.
The entire surface of 141P is covered with a pack material 7, and so-called 141P bonding is performed.
而して、該拡散溶接において、チタン箔5はその活性機
能により容易にセラミック内管2に拡散浴接していき、
父、ろう材4の方へも拡散していく。During the diffusion welding, the titanium foil 5 easily comes into contact with the ceramic inner tube 2 in a diffusion bath due to its active function.
It also spreads towards my father, waxing material 4.
一方、銀ろう材4は高温により溶融して炭素鋼外管1に
溶着すると共にチタン箔5にも溶融していき、結果的に
セラミック内管2へのチタン拡散を介して炭素鋼外管1
とセラミック内管2は溶融金属8を介して冶金的に結合
さ6れる。On the other hand, the silver brazing filler metal 4 melts due to the high temperature and adheres to the carbon steel outer tube 1, and also melts to the titanium foil 5, and as a result, titanium diffuses into the ceramic inner tube 2, and the carbon steel outer tube 1.
and ceramic inner tube 2 are metallurgically coupled 6 via molten metal 8.
そして、拡散溶接が終了し、瀧度が低下していくと外管
1と浴融金属8は縮径してセラミック内管に所定の圧縮
応ノコを印加する。Then, when the diffusion welding is completed and the degree of tackiness decreases, the diameters of the outer tube 1 and the bath metal 8 are reduced, and a predetermined compression saw is applied to the ceramic inner tube.
蓋し、セラミック内管2の熱膨張係数は小さいから縮径
の程度は小さいからである。This is because the degree of diameter reduction is small because the thermal expansion coefficient of the ceramic inner tube 2 is small.
そして、拡散溶接が終了すれは両端を適宜に切断して第
5図に示す様にセラミック二重管3〃を得る0
上述の如く製造したセラミック二重管3〃を、例えは、
油井管等に利用すれは、耐蝕性はセラミック内管2によ
り充分溝たされ、耐圧性は炭素鋼外管1により充分機能
され、又、上述圧縮残留応力により縁UCPのみりれは
防止され、セラミックによる熱膨張係数の小なることに
より熱挙動は少ない。After the diffusion welding is completed, both ends are appropriately cut to obtain the ceramic double tube 3 as shown in FIG.
When used in oil country tubular goods etc., the corrosion resistance is sufficiently grooved by the ceramic inner tube 2, the pressure resistance is sufficiently functioned by the carbon steel outer tube 1, and the edge UCP is prevented from chamfering due to the compressive residual stress mentioned above. Thermal behavior is small due to the small thermal expansion coefficient of ceramic.
尚、この出願の発明の実施態様は上述実施例に限るもの
でないことは勿論であり、例えは、金属外管、ろう材に
他の材質を用いることが出来る等種々の態様が採用可能
である。It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments; for example, various embodiments can be adopted, such as the possibility of using other materials for the metal outer tube and the brazing material. .
又、第6,7図に示す実施例の様に内外管1,2の熱膨
張差を考慮して十分なろう材を用い、ろう付する方法も
可能である。It is also possible to use a brazing method using a sufficient amount of brazing material in consideration of the difference in thermal expansion between the inner and outer tubes 1 and 2, as in the embodiment shown in FIGS. 6 and 7.
以上先述のこの出願の発明によれは、セラミック内管が
金属外管に対しチタンの活性を介して冶金的に結合され
ているために全盲的に強固に結合されていることにlJ
、す、輔づれ等が起こらず、クラック等が発生しない信
頼性の高い稼動が行える1憂れた効果が奏される。According to the above-mentioned invention of this application, the ceramic inner tube is metallurgically bonded to the metal outer tube through the activity of titanium, so that they are completely and firmly bonded.
This brings about the remarkable effect that highly reliable operation is possible without any slipping or cracking.
又、ろう材はチタンと金属外管を冶金的に結合するのみ
ならす、チタンの拡散溶接後金属外管とセラミック内管
との間を充填し、冷却後セラミック内管に圧縮応力を印
ao するため稼動中の割れを生ずることがない優れた
効果が奏される。In addition, the brazing material not only metallurgically connects the titanium and the metal outer tube, but also fills the space between the metal outer tube and the ceramic inner tube after titanium diffusion welding, and applies compressive stress to the ceramic inner tube after cooling. Therefore, an excellent effect is achieved in that no cracking occurs during operation.
したがって、セラミックの軽量、小熱膨張係数の利点が
生かされ、上述効果に相乗して熱挙動が少く、そのため
、管の信頼性が高く、施工、運搬がし易い利点がある。Therefore, the advantages of ceramic's light weight and small coefficient of thermal expansion are taken advantage of, and in combination with the above-mentioned effects, the thermal behavior is small, and therefore the pipe has the advantage of being highly reliable and easy to construct and transport.
而して、このセラミック管の製造において、セラミック
内置外側に予めチタン・2凸を添接し、その外側に金属
外管に対してろう材を介装するようにして拡散溶接を行
うようにしたことにより、本来ろう材がセラミック内管
に浴着し雌いのが、チタンの活性を介してチタンがセラ
ミックに拡散し、又、ろう材にも拡散し、結果的にろう
材がセラミック内管と金属外管を冶金的に結合さぜるこ
とか出来る優れた効果が奏される。Therefore, in the production of this ceramic tube, two convex pieces of titanium are attached in advance to the outside of the ceramic inner tube, and diffusion welding is performed by interposing a brazing material on the outer side of the metal tube. As a result, the brazing filler metal would normally adhere to the ceramic inner tube, but through the activity of titanium, titanium diffuses into the ceramic and also into the brazing filler metal, and as a result, the brazing filler metal adheres to the ceramic inner tube. Excellent effects can be achieved by metallurgically bonding the metal outer tube.
しかも、これらの結合が拡散溶接により一挙に行える効
果もある。Moreover, there is an advantage that these connections can be made all at once by diffusion welding.
渠1図は従来態様によるセラミック二重管の部分断面図
、第2図以下はこの出願の発明の詳細な説明図であり、
第2図は素材管の6説明部分析而図、第6図は拡散1容
接説明部分断面図、第4図は第5図部分拡大断面図、第
5図はセラミック二重看断面図であり、第6,7図は他
の実施例の1析面図である。
1・・外管、 2・・・セラミック内管、
3″・・・セラミック二重管、 8・・・冶金結合(
溶融金属)、5・・・チタン(??3)、 4・
・・ろう材第6図
第7図Figure 1 is a partial sectional view of a conventional double ceramic pipe, and Figures 2 and below are detailed explanatory views of the invention of this application.
Figure 2 is an analysis diagram of the 6 parts of the material tube, Figure 6 is a partial cross-sectional view explaining diffusion 1, Figure 4 is an enlarged partial cross-sectional view of Figure 5, and Figure 5 is a double-view cross-sectional view of the ceramic. 6 and 7 are 1-dimensional views of other embodiments. 1...Outer tube, 2...Ceramic inner tube,
3″... Ceramic double tube, 8... Metallurgical bond (
Molten metal), 5...Titanium (??3), 4.
...Brazing filler metal Fig. 6 Fig. 7
Claims (2)
ミック二重管において、該金属外管とセラミック内管と
の間に冶金結合が形成され、而して該セラミック内管に
対してチタンが結合材として用いられていることを特徴
とするセラミック二重管。(1) In a ceramic double tube in which a ceramic inner tube is bonded to a metal outer tube, a metallurgical bond is formed between the metal outer tube and the ceramic inner tube, and the titanium A ceramic double tube characterized in that is used as a binding material.
重管を得るようにした製造方法において、該金、嘴外管
内にろう材を介してチタン層を添接させ、該チタン層内
にセラミック内管を重層させ、これらの重合状、態で加
熱処理を行い該チタンを結合材としてセラミック内管と
金属外管を冶金的に結合させるようにしたことを特徴と
するセラミック二車管製造方法。(2) In a manufacturing method in which a double tube is obtained by metallurgically bonding a ceramic inner tube to a metal outer tube, a titanium layer is attached to the gold and outer tube through a brazing material, and the titanium A ceramic double layer characterized in that a ceramic inner tube is layered within the layer, and the ceramic inner tube and the metal outer tube are metallurgically bonded by heat treatment in a polymerized state and using the titanium as a bonding material. Car tube manufacturing method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17855882A JPS5969480A (en) | 1982-10-13 | 1982-10-13 | Ceramic doubletube and manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17855882A JPS5969480A (en) | 1982-10-13 | 1982-10-13 | Ceramic doubletube and manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5969480A true JPS5969480A (en) | 1984-04-19 |
Family
ID=16050582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17855882A Pending JPS5969480A (en) | 1982-10-13 | 1982-10-13 | Ceramic doubletube and manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5969480A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS503410A (en) * | 1973-05-16 | 1975-01-14 | ||
JPS5317265A (en) * | 1976-08-02 | 1978-02-17 | Hitachi Ltd | Tight adhesion method between metallic part and insulating material |
JPS56155077A (en) * | 1980-04-16 | 1981-12-01 | Mtu Muenchen Gmbh | Metal-ceramic member and its manufacture |
-
1982
- 1982-10-13 JP JP17855882A patent/JPS5969480A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS503410A (en) * | 1973-05-16 | 1975-01-14 | ||
JPS5317265A (en) * | 1976-08-02 | 1978-02-17 | Hitachi Ltd | Tight adhesion method between metallic part and insulating material |
JPS56155077A (en) * | 1980-04-16 | 1981-12-01 | Mtu Muenchen Gmbh | Metal-ceramic member and its manufacture |
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