JPH042094B2 - - Google Patents
Info
- Publication number
- JPH042094B2 JPH042094B2 JP7179484A JP7179484A JPH042094B2 JP H042094 B2 JPH042094 B2 JP H042094B2 JP 7179484 A JP7179484 A JP 7179484A JP 7179484 A JP7179484 A JP 7179484A JP H042094 B2 JPH042094 B2 JP H042094B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- tube
- short
- pipe
- outer periphery
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 99
- 238000000034 method Methods 0.000 claims description 51
- 239000002131 composite material Substances 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000009787 hand lay-up Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000011505 plaster Substances 0.000 description 12
- 239000002002 slurry Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 239000004567 concrete Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000010304 firing Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
［技術分野］
本発明はセラミツク管をFRPで被覆するセラ
ミツク複合管の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of manufacturing a ceramic composite tube in which a ceramic tube is coated with FRP.
［従来技術］
セラミツクは耐摩性、耐蝕性、耐薬品性に優れ
ているので、この特性を生かして粉体輸送、スラ
リー輸送、あるいは腐蝕性流体輸送の配管材料と
して用いられることがあるが、その一方において
材質的に脆いという欠点を持ち合せている。この
ため、配管材料として、セラミツク管そのものを
単体で使用することを避け、上記用途に対し鉄、
コンクリートその他の補強物で補強したセラミツ
ク複合管が用いられることがある。このセラミツ
ク複合管を製造するにあたつて、通常単体のセラ
ミツク管を鉄、コンクリート等で被覆したりある
いは鉄、コンクリート製等の管内にセラミツク板
を貼り付けたり、セラミツク管を鉄、コンクリー
ト製等の管内に挿入固定するということが行われ
ている。[Prior art] Ceramic has excellent wear resistance, corrosion resistance, and chemical resistance, so it is sometimes used as a piping material for powder transportation, slurry transportation, or corrosive fluid transportation, taking advantage of these characteristics. On the other hand, it has the disadvantage of being a brittle material. For this reason, we avoid using ceramic pipes alone as piping materials, and instead use iron,
Ceramic composite pipes reinforced with concrete or other reinforcements may be used. In manufacturing this ceramic composite pipe, usually a single ceramic pipe is covered with iron, concrete, etc., a ceramic plate is pasted inside a pipe made of iron, concrete, etc., or a ceramic pipe is made of iron, concrete, etc. This is done by inserting and fixing the tube into the tube.
［従来技術の欠点］
これら従来の製造方法のうち、セラミツク管を
鉄、コンクリート製等の管内に挿入固定する方法
はセラミツク管と補強物である管との間にクツシ
ヨンとなるモルタル等の可塑物を充填する工程を
必要とし、このため設備が大掛りになり管全体の
厚さ及び管径が大きくなるという問題がある。セ
ラミツク板を管内に貼り付ける方法にあつては管
径の大きいものには適用可能であつてもエルボ
や、管径の小さいものあるいは管長の長いものに
は適さないという欠点がある。[Disadvantages of Prior Art] Among these conventional manufacturing methods, the method of inserting and fixing a ceramic pipe into a pipe made of iron or concrete requires a plastic material such as mortar to act as a cushion between the ceramic pipe and the reinforcing pipe. This requires a step of filling the pipe, which increases the size of the equipment and increases the thickness and diameter of the entire pipe. The method of pasting ceramic plates inside pipes has the disadvantage that although it is applicable to pipes with large diameters, it is not suitable for elbows, pipes with small diameters, or pipes with long lengths.
また、単体のセラミツク管を鉄、コンクリート
等で被覆する方法にあつても管長の長いものや、
曲率半径の大きいエルボを製造することは技術的
に困難かつ精度的に劣るので、現実的には管長の
短いものしか製造できないという欠点がある。更
にこのような方法で製造された複合管にあつては
多数の接手を必要とするので、配管施行が非常に
面倒であるという問題もある。 In addition, even if a single ceramic pipe is coated with iron, concrete, etc., the pipe length may be long,
It is technically difficult and less accurate to manufacture an elbow with a large radius of curvature, so there is a drawback that in reality only short pipe lengths can be manufactured. Furthermore, since composite pipes manufactured by such a method require a large number of joints, there is also the problem that piping installation is extremely troublesome.
［発明の目的］
本発明は上記欠点を解消するためになされたも
のであり、その目的は管径の小さいもの、管長の
長いもの、曲率半径の大きいベンドまたはエルボ
にも適用できしかも実用上容易に製造可能なセラ
ミツク複合管の製造方法を提供することにある。
本発明はさらにコスト、設備費の低廉化をも目的
とする。[Object of the Invention] The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to be applicable to pipes with small diameters, long pipe lengths, and bends or elbows with large curvature radii, and which is easy to use in practice. The object of the present invention is to provide a method for manufacturing ceramic composite tubes that can be manufactured in a number of ways.
A further object of the present invention is to reduce costs and equipment costs.
［発明の概要］
上記目的を達成するため、本発明方法は焼成後
のセラミツク短管の両端を切断して接合可能な短
管を形成し、これら短管を接合し、その接合部外
周を適当な幅で繊維強化樹脂（以下「FRP」と
称する）補強することにより所望のセラミツク管
を製造し、次にセラミツク管の両端外周を所定の
幅でFRP被覆し、更にその上からフランジを形
成し、その後にFRPの補強帯およびフランジを
含むセラミツク管の外周をFRP被覆することを
特徴とする。[Summary of the Invention] In order to achieve the above object, the method of the present invention involves cutting off both ends of a short ceramic tube after firing to form a short tube that can be joined, joining these short tubes, and cutting the outer periphery of the joint part appropriately. The desired ceramic tube is manufactured by reinforcing it with fiber-reinforced resin (hereinafter referred to as "FRP") to a specified width, then the outer periphery of both ends of the ceramic tube is coated with FRP to a specified width, and then a flange is formed on top of that. Then, the outer periphery of the ceramic tube including the FRP reinforcing band and flange is coated with FRP.
セラミツク短管を鋳込成形法で製造すれば、押
出成形法と比べて製造設備が廉化であり、管自体
歪のないものが得られる。しかもこの方法だと、
直管ばかりでなく、曲管の製造もでき、管の肉
厚、管の曲率も自由に変えることができる。この
方法で所望の厚みを有するセラミツク短管が形成
され、乾燥後所定の温度で焼成される。この方法
を用いて短いセラミツク管を製造することにした
のは歩留の向上や精度的保証を確保するためであ
る。 If ceramic short pipes are manufactured using the casting method, the manufacturing equipment is less expensive than when using the extrusion molding method, and the pipe itself can be produced without distortion. Moreover, with this method,
In addition to straight pipes, we can also manufacture curved pipes, and we can freely change the wall thickness and curvature of the pipe. By this method, a ceramic short tube having a desired thickness is formed, and after drying, it is fired at a predetermined temperature. The reason why we decided to use this method to manufacture short ceramic tubes was to improve yield and ensure accuracy.
なお、セラミツク短管を形成する材料にはアル
ミナ、炭化珪素、窒化硅素、ムライト、ジルコニ
ア、サイアロン、アルミナ配合磁器等の種々の材
料が適宜選択されて用いられる。 Note that various materials such as alumina, silicon carbide, silicon nitride, mullite, zirconia, sialon, and alumina-containing porcelain are appropriately selected and used as the material for forming the ceramic short tube.
セラミツク製管の製造法には一般にプレス法、
射出法の他に押出し成形法があり安価で製作する
には押出成形法が考えられるがこの方法は高価な
押出機が必要であり大径のものは特に装置が大型
化する欠点がある。また口金から押し出された成
形品に歪あるいは密度の差が残つていると焼成時
に変形する恐れがあり成形時の管理が大変であ
る。押出成形はセラミツク粉末と可塑性物質との
混合物を脱気加圧することにより成形体を得る方
法であり、曲管を成形する場合は押出しと同時に
曲がりを与える必要がある。そのため特に曲管の
場合一定曲率のものを押出法で得ることは複雑な
装置を必要とし、非常に困難である。 Ceramic pipes are generally produced using the press method,
In addition to the injection method, there is an extrusion molding method, and the extrusion molding method may be considered for inexpensive production, but this method requires an expensive extruder and has the drawback that the equipment becomes large, especially for large diameter ones. Furthermore, if distortion or density differences remain in the molded product extruded from the die, it may deform during firing, making control during molding difficult. Extrusion molding is a method of obtaining a molded body by deaerating and pressurizing a mixture of ceramic powder and a plastic material, and when molding a curved pipe, it is necessary to impart a bend at the same time as extrusion. Therefore, especially in the case of curved pipes, obtaining a pipe with a constant curvature by extrusion requires complicated equipment and is extremely difficult.
これに対し、鋳込方法によれば、原型と石膏型
により成形できるため簡便であると共に正確な曲
率半径をもつてかつ歪の少ない曲管も容易に成形
できる。鋳込法の基本的考え方は第３図に示すよ
うな型を用いるものであり全工程の手順としては
(1)鋳込型の製作、(2)鋳込泥漿の調製、(3)泥漿の鋳
込型への注入→型への吸水→余剰スラリーの排出
→離型、(4)乾燥(5)焼成(6)仕上加工が標準的であ
る。原型から石膏型を作りスラリー（例えば
Al2O370〜97重量％SiO2重量30〜５％水分20〜40
重量％）を注入して成形する。この場合石膏型は
２つ割れにするのが普通である。 On the other hand, according to the casting method, molding can be performed using a master mold and a plaster mold, which is simple, and it is also possible to easily mold a curved pipe with an accurate radius of curvature and little distortion. The basic idea of the casting method is to use a mold as shown in Figure 3, and the steps for the entire process are as follows:
(1) Production of casting mold, (2) Preparation of casting slurry, (3) Injection of slurry into casting mold → Water absorption into mold → Discharge of excess slurry → Mold release, (4) Drying (5) Firing (6) finishing is standard. Make a plaster mold from the prototype and make a slurry (e.g.
Al 2 O 3 70-97% by weight SiO 2 30-5% by weight Moisture 20-40
% by weight) and molded. In this case, the plaster mold is usually broken into two parts.
離型後は底部のあるものが得られ、この底部を
切断することにより正確な寸法のグリーン短管を
得る。この底部は、離型時の載置部として有用で
ある。パイプの肉厚はスラリーの注入後の時間を
調節することによりコントロールする。鋳込法に
よれば、肉厚のうすいものもかなり厚いものも歪
なく成形できる。 After demolding, a product with a bottom is obtained, and by cutting this bottom, a short green tube with accurate dimensions is obtained. This bottom part is useful as a placement part during demolding. The wall thickness of the pipe is controlled by adjusting the time after slurry injection. According to the casting method, both thin and fairly thick items can be molded without distortion.
成形品は徐々に乾燥後約1300℃以上で焼成して
焼成品を得る。焼成品は必要に応じて（特に端面
を）仕上加工する。但し、焼成前に加工できるも
のは上記の如く生加工する方が効果的である。 The molded product is gradually dried and then fired at a temperature of approximately 1300°C or higher to obtain a fired product. Finish the fired product (especially the edges) as necessary. However, if the material can be processed before firing, it is more effective to process it raw as described above.
焼成後のセラミツク短管はその両端が切断さ
れ、接合可能な短管に形成される。切断は研削に
よつて行うことができる。成形したままのセラミ
ツク短管の両端は歪が生じていることが多いの
で、両端を適当な位置で切断することは短管の精
度を保つ上で、また短管の接合を滑らかにする上
で重要である。 Both ends of the fired ceramic short tube are cut to form a weldable short tube. Cutting can be done by grinding. Both ends of as-molded ceramic short tubes are often distorted, so cutting both ends at appropriate positions will help maintain the accuracy of the short tubes and ensure a smooth joint between the short tubes. is important.
セラミツク複合管が曲率でセラミツク短管も同
一曲率半径を有する場合はこの短管の軸方向に直
角に切断する。また、直管に形成されたセラミツ
ク短管を用いて、所望の近似した曲率を有するセ
ラミツク複合管を製造するときは、接合後のセラ
ミツク管が全体として所望の曲率を有するように
セラミツク短管の端面は管軸に対して直角方向に
切断する。 If the ceramic composite tube has a curvature and the ceramic short tube also has the same radius of curvature, the short tube is cut at right angles to the axial direction. In addition, when manufacturing a ceramic composite pipe having a desired approximate curvature using straight ceramic short pipes, the ceramic short pipes are adjusted so that the ceramic pipe after joining has the desired curvature as a whole. The end face is cut perpendicular to the tube axis.
上記工程によりセラミツク複合管は所望の曲り
角度θを有する例えば30゜，45゜，60゜，90゜ベンド
として製造される。 Through the above steps, ceramic composite tubes are manufactured with desired bending angles .theta., such as 30.degree., 45.degree., 60.degree., and 90.degree. bends.
セラミツク複合管が直管であるときは直管に形
成されたセラミツク短管の両端を軸方向に直角に
切断する。 When the ceramic composite tube is a straight tube, both ends of the straight ceramic short tube are cut at right angles to the axial direction.
これら切断加工された短管は所望の長さまたは
所望の角度のベンドになるまで接合され、その接
合部外周には所定幅のFRPが被覆される。FRP
の補強材としてはガラス繊維製のマツト、クロス
等が使用される。この場合、FRPの接着性を利
用し、接合と被覆を同時に行うこともできる。 These cut short tubes are joined until they are bent to a desired length or angle, and the outer periphery of the joint is covered with FRP of a predetermined width. FRP
Glass fiber mats, cloth, etc. are used as reinforcing materials. In this case, bonding and coating can be performed simultaneously by utilizing the adhesive properties of FRP.
このようにして形成されたセラミツク管の両端
外周は所定幅のFRPで被覆され、更にその上か
らフランジが形成される。フランジはFRP製ま
たは金属製その他FRM等複合材料製のものであ
つても良い。FRPの被覆幅はフランジの厚みよ
り広くすることが望ましい。このような方法をと
ることにより、セラミツク管とフランジとの固着
を強固にすることができる。 The outer periphery of both ends of the ceramic tube thus formed is covered with FRP of a predetermined width, and flanges are further formed thereon. The flange may be made of FRP, metal, or other composite materials such as FRM. It is desirable that the FRP covering width be wider than the flange thickness. By adopting such a method, it is possible to strengthen the adhesion between the ceramic tube and the flange.
その後にFRPの補強帯およびフランジを含む
セラミツク管外周をハンドレイアツプ法またはス
プレイアツプ法等を用いてFRP層が所定厚みに
なるまで被覆する。被覆方法としてハンドレイア
ツプ法あるいはスプレイアツプ法等を採用したの
は大掛りな設備を必要とせず、管径、管長、曲率
の異なる複合管の製造に素早く対応できるからで
ある。FRP樹脂には不飽和ポリエステル樹脂、
エポキシ樹脂、メラミン樹脂、フエノール樹脂、
シリコン樹脂等が用いられる。FRP補強材には
上述のガラス繊維のほかカーボン繊維、ポリアミ
ド繊維、金属繊維等が使用態様に応じて選択され
る。 Thereafter, the outer periphery of the ceramic tube, including the FRP reinforcing band and flange, is coated with an FRP layer to a predetermined thickness using a hand lay-up method, a spray-up method, or the like. The hand lay-up method or spray-up method was adopted as the coating method because it does not require large-scale equipment and can quickly respond to the production of composite pipes with different pipe diameters, pipe lengths, and curvatures. FRP resin includes unsaturated polyester resin,
Epoxy resin, melamine resin, phenolic resin,
Silicone resin or the like is used. In addition to the above-mentioned glass fibers, carbon fibers, polyamide fibers, metal fibers, etc. are selected as the FRP reinforcing material depending on the usage mode.
［実施例］
以下、図面を参照して本発明の一実施例を説明
する。第１図は本発明方法で製造された90゜エル
ボのセラミツク複合管の断面図を示したものであ
る。このセラミツク複合管の構成は次の通りであ
る。すなわち、セラミツク管１はセラミツク製の
短い曲管２がFRPの補強帯３で接合されて90゜ベ
ンドに形成されている。各曲管２は鋳込成形法に
より形成されたセラミツク曲管を所定の温度で焼
成し、その両端を接合が滑らかになるように切断
したものである。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a cross-sectional view of a 90° elbow ceramic composite tube manufactured by the method of the present invention. The structure of this ceramic composite tube is as follows. That is, the ceramic tube 1 is formed by joining short curved ceramic tubes 2 with FRP reinforcing bands 3 to form a 90° bend. Each curved tube 2 is a ceramic curved tube formed by a cast molding method, fired at a predetermined temperature, and then cut at both ends to ensure a smooth joint.
セラミツク管１の両端外周には所定幅のFRP
被覆層４が形成されその上からフランジ５が形成
されている。これらFRPの補強帯３およびフラ
ンジ５を含むセラミツク管１の外周にはFRPで
被覆された一定厚みの外被６が形成されている。
この外被６上に生じた凸環部７は外力に対するク
ツシヨン的な役割を果しセラミツク管１を保護す
る。 A predetermined width of FRP is placed on the outer periphery of both ends of the ceramic tube 1.
A covering layer 4 is formed, and a flange 5 is formed thereon. The outer periphery of the ceramic tube 1, including the FRP reinforcing band 3 and the flange 5, is covered with an FRP jacket 6 having a constant thickness.
The convex ring portion 7 formed on the outer cover 6 serves as a cushion against external forces and protects the ceramic tube 1.
次にその製造方法について述べる。 Next, the manufacturing method will be described.
鋳込成形法は原型から吸水性のある鋳型例えば
石膏型を形成しこの石膏型に泥漿を流し込み所定
時間経過後に排泥して一定厚みの成形体を得る方
法である。本発明方法では一工程としてこの鋳込
成形法を選んだもので、第２図に示す短いセラミ
ツク曲管２ａがこの方法により形成される。所望
の曲管２を得るためにはセラミツク曲管２ａの原
型を乾燥収縮および焼成収縮更に加工しろを見込
んで予め大きく形成する。原型としては木、プラ
スチツク、金属などが用いられるが設備費の軽減
から言えば木型が最適である。この木型を基にし
て第３図に示すような石膏型８が形成される。本
実施例のように曲管２を形成するときは、石膏型
８は割型９とすることが望ましい。割型９は脱型
を考慮してセラミツク曲管２ａの曲率面上で割目
を得るようにする。これら割型９は正確に組み合
せられ鋳込み中に動かないようにする。この石膏
型８内に泥漿が注ぎ込まれて一定厚みのセラミツ
ク曲管２ａが形成される。泥漿としては、例えば
Al2O370〜97重量％、SiO25〜30重量％、水分20
〜24重量％のものが用いられる。その他種々の泥
漿が使用目的に応じて用いられる。セラミツク曲
管２ａを形成するにあたつて、石膏型８内の底面
１０にパラフインを塗布して底無の曲管を形成し
ても良いし、あるいは底付の曲管を形成しても良
い。セラミツク曲管２ａの肉厚は泥漿注入後、排
泥までの時間を調節することにより自由に変える
ことができる。例えば外径12cm、長さ20cm、曲率
半径100cmのものであれば、肉厚は５〜15mmの範
囲で選ぶのが妥当である。肉厚が15mm以上になる
と焼成が難しくまた全体の重量が重くなつて取扱
いが面倒であるし、また肉厚が５mm以下であると
強度的な問題が生じてくる。 The cast molding method is a method in which a water-absorbing mold, such as a plaster mold, is formed from a master mold, slurry is poured into the plaster mold, and the mud is drained after a predetermined period of time to obtain a molded product of a constant thickness. In the method of the present invention, this casting method is selected as one step, and the short ceramic curved pipe 2a shown in FIG. 2 is formed by this method. In order to obtain the desired curved tube 2, the prototype of the ceramic curved tube 2a is previously formed to be large enough to allow for drying shrinkage, firing shrinkage, and further machining. Wood, plastic, metal, etc. can be used as the prototype, but wooden molds are most suitable from the standpoint of reducing equipment costs. A plaster mold 8 as shown in FIG. 3 is formed based on this wooden mold. When forming the curved pipe 2 as in this embodiment, it is desirable that the plaster mold 8 be a split mold 9. The split mold 9 is designed to form a split on the curvature surface of the ceramic curved pipe 2a in consideration of demolding. These mold halves 9 are precisely assembled so that they do not move during casting. Sludge is poured into this plaster mold 8 to form a ceramic curved pipe 2a of a constant thickness. For example, as a slurry,
Al2O3 70-97 % by weight, SiO2 5-30% by weight, moisture 20
~24% by weight is used. Various other slurries may be used depending on the purpose of use. When forming the ceramic curved pipe 2a, paraffin may be applied to the bottom surface 10 of the plaster mold 8 to form a bottomless curved pipe, or a bottomed curved pipe may be formed. . The wall thickness of the ceramic curved pipe 2a can be freely changed by adjusting the time from the injection of the slurry to the removal of the slurry. For example, if the outer diameter is 12 cm, the length is 20 cm, and the radius of curvature is 100 cm, it is appropriate to select a wall thickness in the range of 5 to 15 mm. If the wall thickness is 15 mm or more, it will be difficult to fire and the overall weight will be heavy, making handling difficult. If the wall thickness is 5 mm or less, strength problems will arise.
所定の厚みになつたら、排泥し、石膏型８内で
乾燥収縮させてセラミツク曲管２ａを脱型させ
る。このセラミツク曲管２ａを徐々に乾燥させ、
1300〜1800℃で適当時間焼成する。第１図に示す
曲管２の接合が滑らかになるように焼成後のセラ
ミツク曲管２ａの両端を軸方向に直角に機械加工
し更に端面を研摩して接合端面の接着性を良好に
する。 When a predetermined thickness is reached, the slurry is removed, and the ceramic curved pipe 2a is removed from the mold by drying and shrinking in a plaster mold 8. Gradually dry this ceramic curved pipe 2a,
Bake at 1300-1800℃ for an appropriate time. Both ends of the fired ceramic curved tube 2a are machined perpendicular to the axial direction so that the curved tube 2 shown in FIG. 1 can be joined smoothly, and the end surfaces are polished to improve the adhesion of the joint end surfaces.
次に接着剤を用いて、曲管２を接合し、90゜ベ
ンドのセラミツク管１を形成する。その後、曲管
２の接合部外周を適当な幅でFRP被覆し、補強
帯３を形成して接合部の強化を図る。被覆方法は
ハンドレイアツプ法あるいはスプレイアツプ法等
が良好である。 Next, the bent pipes 2 are joined using adhesive to form the ceramic pipe 1 with a 90° bend. Thereafter, the outer periphery of the joint of the bent pipe 2 is coated with FRP to an appropriate width to form a reinforcing band 3 to strengthen the joint. A suitable coating method is a hand lay-up method or a spray-up method.
90゜ベンドのセラミツク管１が形成されたら、
その両端外周に所定幅のFRPを上記方法を用い
て被覆し、その上にフランジ５を形成する。この
FRP被覆層４と補強帯３の形成は同時に行つて
も良い。曲管２とフランジ５との間は予め接着剤
等を用いて固定しても良い。 Once the 90° bend ceramic tube 1 is formed,
The outer periphery of both ends is coated with FRP of a predetermined width using the above method, and the flange 5 is formed thereon. this
The FRP coating layer 4 and the reinforcing band 3 may be formed at the same time. The curved pipe 2 and the flange 5 may be fixed in advance using an adhesive or the like.
その後、FRPの補強帯３およびフランジ５を
含むセラミツク管１の外周をハンドレイアツプ法
あるいはスプレイアツプ法等を用いてFRP被覆
する。ハンドレイアツプ法を用いるときはセラミ
ツク管１外周にサーフエシングマツトあるいはチ
ヨツプストランドマツトを所定厚みに積層し、そ
の上から樹脂を含浸させ、その後所定形状の内面
を有する割型で押えて形を整えながら乾燥させ、
乾燥後に離型するという工程がとられる。割型の
内面には当然離型剤が塗布されて型の脱離が容易
にされる。乾燥時間は40〜60℃のとき２時間以
上、常温のとき４時間以上とるのが望ましいが樹
脂の種類により適宜変更する。 Thereafter, the outer periphery of the ceramic tube 1, including the FRP reinforcing band 3 and the flange 5, is coated with FRP using a hand lay-up method, a spray-up method, or the like. When using the hand lay up method, surfaging mat or chop strand mat is laminated to a predetermined thickness around the outer periphery of the ceramic tube 1, resin is impregnated on top of it, and then pressed with a split mold having an inner surface of a predetermined shape. Dry while adjusting the shape.
A step is taken to release the mold after drying. Naturally, a mold release agent is applied to the inner surface of the split mold to facilitate release of the mold. The drying time is desirably 2 hours or more when the temperature is 40 to 60°C, and 4 hours or more when the temperature is room temperature, but it may be changed as appropriate depending on the type of resin.
また、スプレイアツプ法を用いるときはセラミ
ツク管１を回転させながら移動させ、ガラスロー
ビングを吹付ガン部の前で１〜２インチの長さに
切断し、樹脂と同時にセラミツク管１外周に所定
厚みだけ吹付けることにより行われる。場合によ
つては外被６を割型で押えて形を整える。 When using the spray-up method, the ceramic tube 1 is moved while rotating, the glass roving is cut into a length of 1 to 2 inches in front of the spray gun section, and a predetermined thickness is applied to the outer periphery of the ceramic tube 1 at the same time as the resin. It is done by spraying. In some cases, the outer cover 6 is pressed with a split mold to shape it.
セラミツク複合管相互の接続は第４図に示す如
く行われる。セラミツク複合管のフランジ５，５
を突き合わせてボルト１１を通しナツト１１ａで
固定する。 The ceramic composite tubes are interconnected as shown in FIG. Ceramic composite pipe flange 5,5
butt them together, pass the bolt 11 through, and secure with the nut 11a.
第５図は本願発明の他の実施例を示したもの
で、直管に形成されたセラミツク短管１２，１２
ａを所望の近似した曲率を有する曲管１ｂに接合
させ、所望の曲り角度すなわち90゜ベンドとして
製造したセラミツク複合管の断面図である。 FIG. 5 shows another embodiment of the present invention, in which ceramic short pipes 12, 12 are formed into straight pipes.
Fig. 3 is a cross-sectional view of a ceramic composite pipe manufactured by joining a to a curved pipe 1b having a curvature similar to the desired one and bending the pipe at a desired bending angle, that is, 90°.
第６図に示すセラミツク複合管は45゜ベンドで
ある。 The ceramic composite tube shown in Figure 6 has a 45° bend.
直管に形成されたセラミツク短管１２，１２ａ
の両端は接合して得られたセラミツク管１ａ，１
ｂが所望の近似した曲率を有するように管軸方向
に対しある角度をもたせて切断されている。その
後の工程は前実施例と同様である。 Ceramic short pipes 12, 12a formed into straight pipes
Both ends of the ceramic tube 1a, 1 obtained by joining
It is cut at a certain angle with respect to the tube axis direction so that b has a desired approximate curvature. The subsequent steps are similar to those in the previous example.
この方法によれば、セラミツク直管であらゆる
ベンドを形成できるので設備費が軽減され、また
精度・品質の良いものが製造される。 According to this method, all kinds of bends can be formed using ceramic straight pipes, reducing equipment costs and producing products with good precision and quality.
第１図は本発明方法により製造されたセラミツ
ク複合管の縦断面図、第２図は鋳込成形されたセ
ラミツク短管の斜視図、第３図は鋳込成形用の石
膏型の組立分解斜視図、第４図はセラミツク複合
管の接続状態を示した断面図、第５図および第６
図は他の実施例を示した断面図である。
１ａ，１ｂ……接合されたセラミツク管、２…
…短いセラミツク曲管、２ａ……加工前のセラミ
ツク短管、３……補強帯、４……フランジ部被覆
層、５……フランジ、６……FRP外被、８……
石膏型、９……割型、１０……底面、１１……ボ
ルト、１１ａ……ナツト、１２，１２ａ……短い
セラミツク直管。
Fig. 1 is a longitudinal sectional view of a ceramic composite pipe manufactured by the method of the present invention, Fig. 2 is a perspective view of a cast-molded ceramic short pipe, and Fig. 3 is an assembled and disassembled perspective view of a plaster mold for casting. Figures 4 and 4 are cross-sectional views showing the connection state of ceramic composite pipes, Figures 5 and 6.
The figure is a sectional view showing another embodiment. 1a, 1b...joined ceramic tubes, 2...
... Short ceramic curved pipe, 2a ... Ceramic short pipe before processing, 3 ... Reinforcement band, 4 ... Flange portion coating layer, 5 ... Flange, 6 ... FRP jacket, 8 ...
Plaster mold, 9... split mold, 10... bottom, 11... bolt, 11a... nut, 12, 12a... short ceramic straight pipe.
Claims (1)
合可能な短管を形成し、これら短管を接合し、そ
の接合部外周を適当な幅で繊維強化樹脂補強する
ことにより所望のセラミツク管を製造し、次にセ
ラミツク管の両端外周を所定の幅で繊維強化樹脂
被覆し、更にその上からフランジを形成し、その
後に繊維強化樹脂の補強帯およびフランジを含む
セラミツク管の外周を繊維強化樹脂被覆すること
から成るセラミツク複合管の製造方法。 ２ 特許請求の範囲第１項において、前記セラミ
ツク短管を鋳込成形法により形成することを特徴
とするセラミツク複合管の製造方法。 ３ 特許請求の範囲第１項又は第２項において、
前記セラミツク短管を曲管に形成し、接合して所
望の曲率および所望の曲り角度を有するセラミツ
ク管を製造することを特徴とするセラミツク複合
管の製造方法。 ４ 特許請求の範囲第１項又は第２項において、
前記セラミツク短管を直管に形成することを特徴
とするセラミツク複合管の製造方法。 ５ 特許請求の範囲第４項において、前記セラミ
ツク短管の両端を適当な角度で切断し、これら短
管を接合して所望の近似した曲率および所望の曲
り角度を有するセラミツク管を製造することを特
徴とするセラミツク複合管の製造方法。 ６ 特許請求の範囲第４項において、前記セラミ
ツク短管の両端を直角に切断し、これら短管を接
合して所望の長さのセラミツク管を製造すること
を特徴とするセラミツク複合管の製造方法。 ７ 特許請求の範囲第１項ないし第６項のいずれ
か１において、前記セラミツク管の外周をハンド
レイアツプ法またはスプレイアツプ法を用いて繊
維強化樹脂被覆することを特徴とするセラミツク
複合管の製造方法。[Claims] 1. Cutting both ends of a fired ceramic short tube to form a short tube that can be joined, joining these short tubes, and reinforcing the outer periphery of the joint with fiber-reinforced resin to an appropriate width. A desired ceramic tube is manufactured using the above method, and then the outer periphery of both ends of the ceramic tube is coated with fiber-reinforced resin to a predetermined width, and a flange is further formed on the outer periphery of the ceramic tube, and then a ceramic tube including a reinforcing band of fiber-reinforced resin and the flange is formed. A method for manufacturing a ceramic composite pipe, which comprises coating the outer periphery of a ceramic composite pipe with a fiber-reinforced resin. 2. The method of manufacturing a ceramic composite tube according to claim 1, characterized in that the short ceramic tube is formed by a casting method. 3 In claim 1 or 2,
A method for manufacturing a ceramic composite pipe, comprising forming the short ceramic pipe into a curved pipe and joining the short ceramic pipe to produce a ceramic pipe having a desired curvature and a desired bending angle. 4 In claim 1 or 2,
A method for manufacturing a ceramic composite tube, comprising forming the short ceramic tube into a straight tube. 5. Claim 4 provides that both ends of the short ceramic tube are cut at an appropriate angle, and the short tubes are joined to produce a ceramic tube having a desired approximate curvature and a desired bending angle. A manufacturing method for ceramic composite pipes. 6. A method for manufacturing a ceramic composite tube according to claim 4, characterized in that both ends of the short ceramic tube are cut at right angles, and the short tubes are joined to manufacture a ceramic tube of a desired length. . 7. The production of a ceramic composite tube according to any one of claims 1 to 6, characterized in that the outer periphery of the ceramic tube is coated with fiber-reinforced resin using a hand lay-up method or a spray-up method. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179484A JPS60217139A (en) | 1984-04-12 | 1984-04-12 | Manufacture of ceramic composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179484A JPS60217139A (en) | 1984-04-12 | 1984-04-12 | Manufacture of ceramic composite pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60217139A JPS60217139A (en) | 1985-10-30 |
| JPH042094B2 true JPH042094B2 (en) | 1992-01-16 |
Family
ID=13470826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7179484A Granted JPS60217139A (en) | 1984-04-12 | 1984-04-12 | Manufacture of ceramic composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60217139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011214599A (en) * | 2010-03-31 | 2011-10-27 | Kyocera Corp | Tubular composite and method for manufacturing the same |
-
1984
- 1984-04-12 JP JP7179484A patent/JPS60217139A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011214599A (en) * | 2010-03-31 | 2011-10-27 | Kyocera Corp | Tubular composite and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60217139A (en) | 1985-10-30 |
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