JPH0373457B2 - - Google Patents
Info
- Publication number
- JPH0373457B2 JPH0373457B2 JP58137303A JP13730383A JPH0373457B2 JP H0373457 B2 JPH0373457 B2 JP H0373457B2 JP 58137303 A JP58137303 A JP 58137303A JP 13730383 A JP13730383 A JP 13730383A JP H0373457 B2 JPH0373457 B2 JP H0373457B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- thermite
- short
- ceramic
- 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 51
- 239000003832 thermite Substances 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000005260 corrosion Methods 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】
本発明は、セラミツク層が母管内周面にライニ
ングされた複合構造管に係り、特にその端部が腐
食されにくいセラミツク複合構造管の製造方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite tube whose inner peripheral surface is lined with a ceramic layer, and more particularly to a method for manufacturing a ceramic composite tube whose ends are less likely to be corroded.
近年、管内面にセラミツク層が被覆形成された
セラミツク複合構造管は、セラミツク層が耐熱
性、耐食性、耐摩耗性等の良好な特性を発揮する
ため、各種流体の輸送管や工業用配管部材とし
て、広汎な用途に使用されている。 In recent years, ceramic composite structure pipes with a ceramic layer coated on the inner surface of the pipe have been used as transportation pipes for various fluids and industrial piping members because the ceramic layer exhibits good properties such as heat resistance, corrosion resistance, and abrasion resistance. , used for a wide range of purposes.
この種の複合構造管の製造方法には、金属管や
セメント系非金属管を母管として、該母管内に溶
融セラミツクを置注鋳造あるいは遠心力場内で注
湯し、該母管内周面にセラミツク層を形成する方
法や、遠心力とテルミツト反応を利用し、母管内
周面に金属層を介してセラミツク層を形成する所
謂遠心テルミツト法を挙げることができる。 The manufacturing method for this kind of composite structure pipe involves using a metal pipe or a cement-based non-metallic pipe as the main pipe, and pouring molten ceramic into the main pipe by position casting or in a centrifugal force field, and applying it to the inner circumferential surface of the main pipe. Examples include a method of forming a ceramic layer, and a so-called centrifugal thermite method, which utilizes centrifugal force and thermite reaction to form a ceramic layer on the inner peripheral surface of the main tube via a metal layer.
いずれの場合であつても、複合構造管の母管に
通常の鋼材が使用されている限り、前記複合構造
管を腐食性気液の配管材として使用する場合、そ
の端部に腐食性気液が回り込むことにより、前記
端部の鋼材が腐食及び侵食される。更に、遠心テ
ルミツト法の場合、そのテルミツト剤に、通常の
Al−酸化鉄系のものを使用すると母管の材質に
関係なく、その生成金属は鉄であるので、これま
た容易に端部の生成金属層から侵食が起り、内面
のテルミツト層は、バツクアツプ材（生成金属
層）のない箇所から、強度が低下し剥れ易くな
る。第１図は、遠心テルミツト法により、母管１
内周面に金属層２を介して、セラミツク層３が形
成された複合構造管の端部付近の部分縦断面を示
し、第１図ａは腐食前、第１図ｂは前述した侵食
後の状態を示している。 In any case, as long as ordinary steel is used for the main pipe of the composite structural pipe, if the composite structural pipe is used as a piping material for corrosive gas and liquid, the ends of the composite structural pipe may be exposed to corrosive gas or liquid. The steel material at the end is corroded and eroded by the rotation. Furthermore, in the case of the centrifugal thermite method, the thermite agent is
When Al-iron oxide type materials are used, regardless of the material of the main tube, since the generated metal is iron, corrosion easily occurs from the formed metal layer at the end, and the thermite layer on the inner surface becomes a back-up material. The strength decreases and it becomes easy to peel from the part where there is no (generated metal layer). Figure 1 shows the main tube 1
A partial vertical cross-section of the vicinity of the end of a composite structure pipe in which a ceramic layer 3 is formed on the inner circumferential surface through a metal layer 2 is shown, FIG. 1a is before corrosion, and FIG. 1b is after the aforementioned erosion It shows the condition.
上述の場合、母管１自体を耐食性金属とし、更
に遠心テルミツト法による場合は、特殊なテルミ
ツト剤を使用し、生成金属層２も耐食性を有する
ものとすることで、この問題は解決されるが、内
面にセラミツク層を形成した意味がなくなり、ま
た極めてコスト高となる。 In the above case, this problem can be solved by making the main tube 1 itself a corrosion-resistant metal, and if using the centrifugal thermite method, by using a special thermite agent and making the generated metal layer 2 also corrosion-resistant. , there is no point in forming a ceramic layer on the inner surface, and the cost becomes extremely high.
本発明は、以上の問題を解決すべくなされたも
ので、セラミツク複合構造管の母管が、通常の鋼
材であつても、また、ライニング層が生成鉄層及
びセラミツク層からなつたものであつても、その
端部が腐食及び侵食されることがなく、セラミツ
ク層のライニングが有する本来の優れた特性が十
分発揮されるセラミツク複合構造管の製造方法を
提供することを目的とし、その特徴とするところ
は、母管の内周面にテルミツト剤を装填し、遠心
力場内で該テルミツト剤に着火し、テルミツト反
応を行わせて、前記母管内周面にテルミツト反応
により生じた金属層を介してセラミツク層を被覆
形成するセラミツク複合構造管の製造方法におい
て、セラミツク層の内径とほぼ同径もしくは小径
で、かつ材質が耐食性金属である短管の短面を母
管の端面に溶接により同心状に一体固着し、前記
短管の少なくとも内端部内周面に耐熱リングを嵌
着固定し、次いで耐熱リングの肉厚間にテルミツ
ト剤の内表面が位置するように前記母管の内周面
にテルミツト剤を装填し、遠心力場内で母管内周
面にテルミツト反応により生じた金属層を介して
セラミツク層を被覆形成した後、前記耐熱リング
を短管から取り外す点にある。 The present invention has been made to solve the above problems, and even if the main pipe of a ceramic composite structure pipe is made of ordinary steel, the lining layer is made of a produced iron layer and a ceramic layer. The purpose of the present invention is to provide a method for manufacturing a ceramic composite structure pipe in which the end portions are not corroded or eroded even when the ceramic layer is lining the ceramic layer, and the original excellent characteristics of the ceramic layer lining are fully exhibited. The process involves loading a thermite agent onto the inner circumferential surface of the main tube, igniting the thermite agent in a centrifugal force field, causing a thermite reaction, and discharging the metal layer on the inner circumferential surface of the main tube through the metal layer produced by the thermite reaction. In the manufacturing method of a ceramic composite structure pipe in which a ceramic layer is formed by coating the ceramic layer, the short surface of the short pipe, which has approximately the same diameter or a smaller diameter as the inner diameter of the ceramic layer and is made of a corrosion-resistant metal, is welded to the end face of the main pipe to form a concentric shape. A heat-resistant ring is fitted and fixed on the inner circumferential surface of at least the inner end of the short tube, and then the thermite agent is attached to the inner circumferential surface of the main tube so that the inner surface of the thermite agent is located between the thickness of the heat-resistant ring. After loading the thermite agent and forming a ceramic layer on the inner peripheral surface of the main tube through a metal layer produced by thermite reaction in a centrifugal force field, the heat-resistant ring is removed from the short tube.
次に、第２図に示す実施態様を参照して、本発
明の構成について説明する。 Next, the configuration of the present invention will be explained with reference to the embodiment shown in FIG.
第２図は、本発明により製造されたセラミツク
複合構造管の端部付近の部分縦断面を示し、この
場合、セラミツク層３のライニングは、遠心テル
ミツト法によつたものであり、前記セラミツク層
３は金属層２を介して、鋼製母管１の内周面に被
覆形成されている。そして、例えばステンレス鋼
のような耐食性金属で作成された短管４の外周縁
部が前記母管１の端面に、端面同士を同心状に合
せて溶接されている。また、該短管４の内径は、
前記母管１のセラミツク層ライニング部の内径よ
り小径であるので、前記短管４の母管１側端面に
前記金属層２の側端が溶着すると共にセラミツク
層３の側端が強固に密着している。もつとも、管
内面に不要な段差があるのは、流体の流れを妨げ
るので、前記短管４の内径は、ライニング部の内
径と同径又は流体の流れを妨げない程度にそれよ
りやや大径もしくはやや小径であることが好まし
い。 FIG. 2 shows a partial longitudinal section near the end of a ceramic composite structure tube manufactured according to the present invention, in which case the lining of the ceramic layer 3 is produced by the centrifugal thermite method, and the lining of the ceramic layer 3 is is coated on the inner circumferential surface of the steel main tube 1 via a metal layer 2. The outer peripheral edge of the short tube 4 made of a corrosion-resistant metal such as stainless steel is welded to the end surface of the main tube 1 with the end surfaces aligned concentrically. Moreover, the inner diameter of the short tube 4 is
Since the diameter is smaller than the inner diameter of the ceramic layer lining portion of the main pipe 1, the side end of the metal layer 2 is welded to the end surface of the short pipe 4 on the main pipe 1 side, and the side end of the ceramic layer 3 is firmly attached. ing. However, an unnecessary step on the inner surface of the tube will hinder the flow of fluid, so the inner diameter of the short tube 4 should be the same as the inner diameter of the lining, or a slightly larger diameter to the extent that it does not impede the flow of fluid. Preferably, the diameter is slightly smaller.
前記短管４の外径は、必ずしも母管１の外径と
同径である必要はないが、母管１の外径と同径で
ある方が、管の取り扱い上便利である。また、前
記短管４の幅Ｌは、配管時にネジ込み継手又は差
し込み継手を使用する場合、ある程度長い方がよ
く、経験的には100mm以上が望ましい。一方、短
管４の外周にフランジが溶接接合されるフランジ
継手の場合は、フランジ間に設けられたガスケツ
トがボルト・ナツトによりフランジを介して強力
に締め付けられるので、管外周への腐食液の回り
込みはなく、前記短管４の幅Ｌは、前記耐食性金
属の寿命と、製造上、セラミツク層のライニング
過程で溶融減損しない程度の必要な長さとのいず
れかの内、長い方を選定するが、一般的には６mm
以上であれば問題はない。 Although the outer diameter of the short pipe 4 does not necessarily have to be the same as the outer diameter of the main pipe 1, it is more convenient to handle the pipe if it is the same as the outer diameter of the main pipe 1. Furthermore, when a threaded joint or a plug-in joint is used for piping, the width L of the short pipe 4 is preferably long to some extent, and empirically, it is preferably 100 mm or more. On the other hand, in the case of a flange joint in which the flange is welded to the outer periphery of the short pipe 4, the gasket provided between the flanges is strongly tightened with bolts and nuts through the flange, so corrosive liquid does not get around to the outer periphery of the pipe. Rather, the width L of the short tube 4 is selected from the longer of the lifespan of the corrosion-resistant metal and the required length to avoid melting and loss during the manufacturing process of lining the ceramic layer. Generally 6mm
If it is above, there is no problem.
以上は、母管１に鋼製のものが使用されている
場合の説明であるが、本発明は、母管１が鋼製の
ものに限らずセメントなど無機材質のものでもよ
い。この場合は、第３図に示すように、セメント
系母管１の端部外周に、脱落防止用の突起を有す
る鋼製外装管５が埋め込み固着され、該外装管５
の端面と、前述した短管４の端面とが同心状に溶
着されたものとなる。尚、この場合、前記外装管
５は、母管１の端部の補強も兼ねている。 The above description is based on the case where the main pipe 1 is made of steel, but in the present invention, the main pipe 1 is not limited to steel, but may be made of an inorganic material such as cement. In this case, as shown in FIG. 3, a steel sheathing tube 5 having a protrusion to prevent falling off is embedded and fixed to the outer periphery of the end of the cement-based main tube 1.
The end face of the short tube 4 and the end face of the short tube 4 described above are welded concentrically. In this case, the sheathing tube 5 also serves to reinforce the end of the main tube 1.
次に、本発明に係わるセラミツク複合構造管の
製造方法について述べる。 Next, a method for manufacturing a ceramic composite structure tube according to the present invention will be described.
先ず、母管１として安価な鋼管又は、前記鋼製
外装管５付のセメント系の円筒管を用い、該母管
１の端面に、前述した耐食性金属で作成された短
管４の外周縁部を、溶接により同心状に一体固着
し、短管４付母管１を得る。 First, an inexpensive steel pipe or a cement-based cylindrical tube with the above-mentioned steel exterior pipe 5 is used as the main pipe 1, and the outer peripheral edge of the short pipe 4 made of the above-mentioned corrosion-resistant metal is attached to the end face of the main pipe 1. are concentrically fixed together by welding to obtain a main pipe 1 with short pipes 4.
第４図は、母管１の両端に短管４，４が一体溶
着された短管４，４付母管１を用いて、遠心テル
ミツト法によりセラミツク層をライニングする場
合を示し、金枠６内に、前記短管４，４付母管１
を挿入し、更に、該短管４，４の少なくとも内端
部内周に、適度な厚さを有し、後述するテルミツ
ト剤を散布するための樋が楽挿入できる程度の内
径を有し、且つ黒鉛や通常の耐火材等で作成され
た耐熱リング７，７を嵌着固定する。この場合、
前記耐熱リング７，７を、予め前記短管４，４の
内端部内周に嵌着固定しておいてもよい。また、
前記短管４内周面と、前記耐熱リング７外周面と
の加工精度が悪く、反応生成物の湯漏れが懸念さ
れる場合は、第５図に示すように、耐熱リング７
の外周の一部に可撓性耐熱パツキン８を装着する
とよい。 FIG. 4 shows a case where a ceramic layer is lined by the centrifugal thermite method using a main pipe 1 with short pipes 4, 4 integrally welded to both ends of the main pipe 1, and a metal frame 6. Inside, the short pipes 4, the main pipe 1 with 4
Furthermore, at least the inner circumference of the inner end of the short tubes 4, 4 has an appropriate thickness and an inner diameter that allows easy insertion of a gutter for dispersing the thermite agent described below, and Heat-resistant rings 7, 7 made of graphite or ordinary fire-resistant material are fitted and fixed. in this case,
The heat-resistant rings 7, 7 may be fitted and fixed to the inner circumferences of the inner end portions of the short tubes 4, 4 in advance. Also,
If the machining accuracy between the inner circumferential surface of the short pipe 4 and the outer circumferential surface of the heat-resistant ring 7 is poor and there is a concern that the reaction product may leak, the heat-resistant ring 7 may be removed as shown in FIG.
It is preferable to attach a flexible heat-resistant packing 8 to a part of the outer periphery.
ここで、前記耐熱リング７を使用する理由を説
明する。前述したように、管内面に不要な段差が
あるのは好ましくないので、前記短管４の内径
D2は、本製造方法の最終目的である複合構造管
のセラミツク層のライニング部の内径とほぼ同径
にする必要がある。しかし、セラミツク層のもと
になるテルミツト剤９の見かけの密度は、ライニ
ング層の平均の密度より相当大きく、母管１の内
径D1と、短管４の内径D2による段差D1−D2内に
は、必要なテルミツト剤９を装填しきれず、前記
短管４の内周面にあふれるテルミツト剤も生ず
る。この状態で、テルミツト反応を行うと、前記
短管４内周面にもセラミツクが付着し、この付着
したセラミツクを削り取り加工する必要が生じ、
好ましくない。故に、耐熱リング７を設けて、短
管４内周面にセラミツクが付着するのを防止する
のである。もし該耐熱リング７を設けない場合
は、必要なテルミツト剤９が母管１内にのみ装填
されるように、母管１と短管４の段差D1−D2を
大きくしなければならず、そして、セラミツク層
のライニング後は不要な段差を除去するため、短
管４内周を切削しなければならず、非常に手間が
かかることになる。 Here, the reason for using the heat-resistant ring 7 will be explained. As mentioned above, it is undesirable to have unnecessary steps on the inner surface of the tube, so the inner diameter of the short tube 4
D 2 needs to be approximately the same diameter as the inner diameter of the lining portion of the ceramic layer of the composite structure tube, which is the final objective of this manufacturing method. However, the apparent density of the thermite agent 9 that forms the basis of the ceramic layer is considerably higher than the average density of the lining layer, and the difference in level between the inner diameter D 1 of the main tube 1 and the inner diameter D 2 of the short tube 4 is D 1 −D. 2 , the necessary thermite agent 9 cannot be fully loaded, and some thermite agent overflows onto the inner peripheral surface of the short tube 4. If the thermite reaction is carried out in this state, ceramic will also adhere to the inner peripheral surface of the short tube 4, and it will be necessary to scrape off this adhered ceramic.
Undesirable. Therefore, the heat-resistant ring 7 is provided to prevent the ceramic from adhering to the inner peripheral surface of the short tube 4. If the heat-resistant ring 7 is not provided, the step difference D 1 - D 2 between the main pipe 1 and the short pipe 4 must be increased so that the necessary thermite agent 9 is loaded only into the main pipe 1. After lining with the ceramic layer, the inner periphery of the short tube 4 must be cut to remove unnecessary steps, which is very time-consuming.
次に、前記金枠６内に挿入された短管４，４付
母管１の両端を、中心部に孔１１があるバンド１
０，１０で固定し、所定の回転に達したところ
で、一方或いは両方から前記バンド１０の孔１１
及び、前記耐熱リング７の孔を通して、テルミツ
ト剤を収容した樋（図示省略）を挿入、反転し、
テルミツト剤を前記母管１内周面のみに散布す
る。そして、前記散布されたテルミツト剤９を有
する短管４，４付母管を更に高速で回転させ、所
定の回転（通常、GNOで70〜200）に達したとこ
ろで、母管１内のテルミツト剤９に着火し、テル
ミツト反応を起こさせ、溶融金属と溶融セラミツ
クを生成させ、更に、回転を加えながら、これら
を比重分離し、母管１の内周面にのみ、金属層２
を介してセラミツク層３を形成させ、放冷後、該
短管４，４付母管１を金枠６より取り出し、前記
耐熱リング７を取り除いて、セラミツク複合構造
管を得る。 Next, both ends of the short tubes 4 and the main tube 1 with 4 inserted into the metal frame 6 are connected to a band 1 having a hole 11 in the center.
0,10, and when the predetermined rotation is reached, the hole 11 of the band 10 is opened from one or both sides.
Then, insert a gutter (not shown) containing a thermite agent through the hole of the heat-resistant ring 7, and turn it over.
Thermite agent is sprayed only on the inner peripheral surface of the main pipe 1. Then, the main pipe with the short pipes 4 and 4 containing the sprayed thermite agent 9 is rotated at a higher speed, and when it reaches a predetermined rotation (usually 70 to 200 in GNO ), the thermite in the main pipe 1 is rotated at a higher speed. The agent 9 is ignited to cause a thermite reaction, producing molten metal and molten ceramic, which are then separated by specific gravity while being rotated, so that a metal layer 2 is formed only on the inner peripheral surface of the main tube 1.
After cooling, the short tubes 4 and the mother tube 1 with 4 are taken out from the metal frame 6, and the heat-resistant ring 7 is removed to obtain a ceramic composite structure tube.
該セラミツク複合構造管は、短管の外周縁部に
母管が溶接され、その端面に金属層の側端が溶着
すると共にセラミツク層の側端が強固に密着し、
複合構造管の端部の保護・強化並びに腐食・侵食
の防止が図られている。 In the ceramic composite structure pipe, the main pipe is welded to the outer peripheral edge of the short pipe, and the side ends of the metal layer are welded to the end face of the main pipe, and the side ends of the ceramic layer are firmly attached.
The aim is to protect and strengthen the ends of composite structural pipes and to prevent corrosion and erosion.
以上述べたように、本発明の製造方法によれ
ば、耐食性金属短管内周面にセラミツクスが付着
せず、又セラミツク複合構造管製造後耐食性短管
内周を切削する必要がないなど、耐食性金属短管
を端面に固着したセラミツク複合構造管を容易安
価に製造することができるものである。 As described above, according to the manufacturing method of the present invention, ceramics do not adhere to the inner circumferential surface of the corrosion-resistant metal short tube, and there is no need to cut the inner circumference of the corrosion-resistant short tube after manufacturing the ceramic composite structure tube. A ceramic composite structure tube with a tube fixed to the end surface can be manufactured easily and inexpensively.
また、母管に安価な鋼材を使用しても差し支え
がなく、端部の腐食や侵食が防止された長寿命の
セラミツク複合構造管を安価に提供することがで
きる。 Further, there is no problem in using inexpensive steel materials for the main pipe, and a long-life ceramic composite structure pipe whose end portions are prevented from corrosion and erosion can be provided at a low cost.
第１図ａは、従来のセラミツク複合構造管の端
部の侵食前の状態を示す部分縦断面図、第１図ｂ
は、従来のセラミツク複合構造管の端部の侵食後
の状態を示す部分縦断面図を示し、第２図より第
５図は本発明に関し、第２図は、本発明のセラミ
ツク複合構造管の端部の構造を示す部分縦断面
図、第３図は、本発明のセラミツク複合構造管の
うち、母管がセメント系非金属の場合の端部構造
を示す部分縦断面図、第４図は、本発明による製
造方法の一工程を示す説明図、第５図は、母管の
端部に溶着された短管に耐熱バツキン付耐熱リン
グを嵌着固定した状態を示す端部の縦断面図を示
す。
１…母管、２…金属層、３…セラミツク層、４
…短管、５…外装管、６…金枠、７…耐熱リン
グ、８…耐熱パツキン、９…テルミツト剤、１０
…バンド。
Fig. 1a is a partial vertical sectional view showing the state of the end of a conventional ceramic composite structure pipe before erosion, and Fig. 1b
2 shows a partial vertical cross-sectional view showing the state of the end of a conventional ceramic composite structure pipe after erosion, FIGS. 2 to 5 relate to the present invention, and FIG. FIG. 3 is a partial longitudinal cross-sectional view showing the structure of the end part, and FIG. , an explanatory view showing one step of the manufacturing method according to the present invention, and FIG. 5 is a longitudinal cross-sectional view of the end showing a state in which a heat-resistant ring with a heat-resistant bag is fitted and fixed to a short pipe welded to the end of the main pipe. shows. 1... Mother pipe, 2... Metal layer, 3... Ceramic layer, 4
...Short pipe, 5...Exterior tube, 6...Metal frame, 7...Heat-resistant ring, 8...Heat-resistant packing, 9...Thermite agent, 10
…band.
Claims (1)
力場内で該テルミツト剤に着火し、テルミツト反
応を行わせて、前記母管内周面にテルミツト反応
により生じた金属層を介してセラミツク層を被覆
形成するセラミツク複合構造管の製造方法におい
て、 セラミツク層の内径とほぼ同径もしくは小径
で、かつ材質が耐食性金属である短管の短面を母
管の端面に溶接により同心状に一体固着し、前記
短管の少なくとも内端部内周面に耐熱リングを嵌
着固定し、次いで耐熱リングの肉厚間にテルミツ
ト剤の内表面が位置するように前記母管の内周面
にテルミツト剤を装填し、遠心力場内で母管内周
面にテルミツト反応により生じた金属層を介して
セラミツク層を被覆形成した後、前記耐熱リング
を短管から取り外すことを特徴とするセラミツク
複合構造管の製造方法。[Scope of Claims] 1. A thermite agent is loaded onto the inner peripheral surface of the main tube, the thermite agent is ignited in a centrifugal force field, a thermite reaction is caused, and the metal generated by the thermite reaction is deposited on the inner peripheral surface of the main tube. In the manufacturing method of a ceramic composite structure pipe in which a ceramic layer is formed as a coating through layers, the short side of a short pipe, which has a diameter that is approximately the same as or smaller than the inner diameter of the ceramic layer, and is made of a corrosion-resistant metal, is welded to the end face of the main pipe. A heat-resistant ring is fitted and fixed on the inner peripheral surface of at least the inner end of the short tube, and then the inside of the main tube is fixed so that the inner surface of the thermite agent is located between the thicknesses of the heat-resistant ring. A ceramic device characterized in that the heat-resistant ring is removed from the short tube after a thermite agent is loaded on the circumferential surface and a ceramic layer is formed on the inner circumferential surface of the main tube in a centrifugal force field via a metal layer generated by a thermite reaction. Method for manufacturing composite structure pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13730383A JPS6027537A (en) | 1983-07-26 | 1983-07-26 | Ceramic composite structure pipe and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13730383A JPS6027537A (en) | 1983-07-26 | 1983-07-26 | Ceramic composite structure pipe and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027537A JPS6027537A (en) | 1985-02-12 |
| JPH0373457B2 true JPH0373457B2 (en) | 1991-11-21 |
Family
ID=15195530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13730383A Granted JPS6027537A (en) | 1983-07-26 | 1983-07-26 | Ceramic composite structure pipe and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027537A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4966533A (en) * | 1972-11-01 | 1974-06-27 | ||
| JPS50126010A (en) * | 1974-03-23 | 1975-10-03 | ||
| JPS52114608A (en) * | 1976-03-23 | 1977-09-26 | Tokyo Shibaura Electric Co | Soldered structure of ceramics with al |
-
1983
- 1983-07-26 JP JP13730383A patent/JPS6027537A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4966533A (en) * | 1972-11-01 | 1974-06-27 | ||
| JPS50126010A (en) * | 1974-03-23 | 1975-10-03 | ||
| JPS52114608A (en) * | 1976-03-23 | 1977-09-26 | Tokyo Shibaura Electric Co | Soldered structure of ceramics with al |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027537A (en) | 1985-02-12 |
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