JPH0356180B2 - - Google Patents
Info
- Publication number
- JPH0356180B2 JPH0356180B2 JP58094359A JP9435983A JPH0356180B2 JP H0356180 B2 JPH0356180 B2 JP H0356180B2 JP 58094359 A JP58094359 A JP 58094359A JP 9435983 A JP9435983 A JP 9435983A JP H0356180 B2 JPH0356180 B2 JP H0356180B2
- Authority
- JP
- Japan
- Prior art keywords
- thermite
- cylindrical
- agent
- main tube
- gutter
- 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
- 239000003832 thermite Substances 0.000 claims description 66
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000012778 molding material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 11
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Chemically Coating (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
この発明は、遠心力をテルミツト反応を利用し
て、母管の内面に金属―セラミツク層を被覆形成
する、所謂遠心テルミツト法による複合構造管の
製造方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a composite structure pipe using the so-called centrifugal thermite method, in which a metal-ceramic layer is coated on the inner surface of a main pipe by utilizing centrifugal force and a thermite reaction. It is.
周知のように、遠心テルミツト法による複合構
造管の製造方法は、第１図に示す如く、母管１内
に金属還元剤と金属酸化物とが一定の比率の混合
物からなるテルミツト剤２を装填し、これを高速
回転による遠心力場内で着火し、下記式に例示す
る如きテルミツト反応を行なわせ、この反応熱に
より生成される溶融金属と溶融セラミツクとを比
重分離して、第２図に示す如く、母管１の内面に
金属層３を介して所望のセラミツク層４を被覆形
成する方法である。 As is well known, the method for manufacturing composite structural tubes using the centrifugal thermite method involves loading a thermite agent 2 made of a mixture of a metal reducing agent and a metal oxide in a certain ratio into a main tube 1, as shown in FIG. Then, this is ignited in a centrifugal force field due to high speed rotation to cause a thermite reaction as exemplified by the formula below, and the molten metal and molten ceramic produced by this reaction heat are separated by specific gravity, as shown in Figure 2. In this method, the inner surface of the main tube 1 is coated with a desired ceramic layer 4 via a metal layer 3.
Fe2O3＋2Al→Al2O3＋2Fe
＋199Kcal／Al2O31モル
3Fe3O4＋8Al→4Al2O3＋9Fe
＋194Kcal／Al2O31モル
ここで、母管１には、テルミツト反応に耐える
もの、例えば鉄・銅・ニツケル等の金属材（好ま
しくは1000℃以上の融点をもつもの）、又はコン
クリート・石綿セメント等の無機質材が使用でき
る。一方、テルミツト剤２もFe―Al2O3層を形成
する上記反応系以外のものも種々利用することが
できる。Fe 2 O 3 +2Al→Al 2 O 3 +2Fe +199Kcal/ Al 2 O 3 1 mole3Fe 3 O 4 + 8Al→4Al 2 O 3 +9Fe +194Kcal/Al 2 O 3 1 mole Here, in the main tube 1, there is a A durable material such as a metal material such as iron, copper, or nickel (preferably one with a melting point of 1000°C or higher), or an inorganic material such as concrete or asbestos cement can be used. On the other hand, various thermite agents 2 other than the above-mentioned reaction system that forms the Fe--Al 2 O 3 layer can also be used.
このような遠心テルミツト法において、テルミ
ツト剤を母管１に散布する方法として、一般的に
は第３図に示す如く、左右に移動可能で、横断面
形状がＵ字形であり、その凹部に散布用テルミツ
ト剤２ａを収容したテルミツト剤散布用樋６を、
遠心機金枠に嵌装した母管１を固定するため前記
金枠５の両端に設けたバンド７，７の内の一方の
バンド７の中心孔７ａを通して、挿入反転し、樋
６に収容された散布用テルミツト剤２ａを、落下
散布することが行なわれている。 In such a centrifugal thermite method, the thermite agent is generally sprayed into the main tube 1, which is movable from side to side and has a U-shaped cross section, as shown in Figure 3. Thermite dispersion gutter 6 containing thermite agent 2a for use,
In order to fix the main tube 1 fitted in the centrifuge metal frame, it is inserted through the center hole 7a of one of the bands 7, 7 provided at both ends of the metal frame 5, and is inverted and accommodated in the gutter 6. The thermite agent 2a for spraying is sprayed by falling.
しかし、上述のようなテルミツト剤散布方法で
は、特に長尺小径管を製造する場合、種々の点で
問題がある。先ず、樋６の横断面の大きさが、バ
ンド７の中心孔７ａの大きさにより制限を受け、
樋６に十分な強度を持たせることができない場合
がある。樋６に十分な強度を与えないで、片持状
態に支持された樋６は、その自重と収容した散布
用テルミツト剤２ａの重量とで、下方に容易に撓
むことになる。この撓みが大きいと、バンド７の
中心孔７ａへの挿入が不可能になる場合も生じ
る。このような場合、従来においては第４図に示
す如く、母管１の両端より樋６を挿入しなければ
ならず、倍の設備を必要とし作業性も悪かつた。
また、樋６の散布用テルミツト剤２ａ収容量が少
ない場合、必要量のテルミツト剤を母管１内に供
給するには、散布作業を数回に分けて行なわなけ
ればならないこともあり、散布作業の効率が悪
く、延いては、複合構造管の生産性が低くなると
いう欠点もあつた。 However, the thermite spraying method described above has various problems, particularly when manufacturing long and small diameter pipes. First, the size of the cross section of the gutter 6 is limited by the size of the center hole 7a of the band 7,
There are cases where the gutter 6 cannot have sufficient strength. If the gutter 6 is supported in a cantilevered manner without providing sufficient strength to the gutter 6, it will easily bend downward due to its own weight and the weight of the thermite agent for dispersion 2a contained therein. If this deflection is large, it may become impossible to insert the band 7 into the center hole 7a. In such a case, conventionally, as shown in FIG. 4, the gutter 6 had to be inserted from both ends of the main pipe 1, requiring twice the amount of equipment and resulting in poor workability.
Furthermore, if the capacity of the thermite agent 2a for spraying in the gutter 6 is small, the spraying operation may have to be carried out in several parts in order to supply the required amount of thermite agent into the main pipe 1. This method also had the drawback of poor efficiency, which in turn led to low productivity of composite structure pipes.
この発明は、遠心テルミツト法において、母管
１が長尺小径管の場合であつても、前述の問題点
を解決し、生産性の向上を図る効率の良い複合構
造管の製造方法を提供するものである。そして、
この発明の要旨とするところは、母管内にテルミ
ツト剤を装填し、遠心力場内で該テルミツト剤を
着火反応せしめ、母管内面にテルミツト反応によ
り生成された金属―セラミツク層を被覆形成する
方法において、円筒状テルミツト成型材を、母管
内に装填して後、遠心力場内で、該円筒状テルミ
ツト成型材に着火して、テルミツト反応を起こさ
せる点にある。 The present invention solves the above-mentioned problems in the centrifugal thermite method even when the main tube 1 is a long and small diameter tube, and provides an efficient method for manufacturing a composite structure tube that improves productivity. It is something. and,
The gist of this invention is to provide a method for loading a thermite agent into a main tube, igniting the thermite agent in a centrifugal force field, and coating the inner surface of the main tube with a metal-ceramic layer produced by the thermite reaction. After loading the cylindrical thermite molding material into the main tube, the cylindrical thermite molding material is ignited in a centrifugal force field to cause a thermite reaction.
以下、この発明の一実施例について詳述する。 An embodiment of the present invention will be described in detail below.
先ず、この発明で使用する円筒状テルミツト成
型材８について説明する。円筒状テルミツト成型
材８は、テルミツト剤と粘結剤、例えば5wt％水
ガラス水溶液とを混合泥状にした後、型込めし、
乾燥固化し、脱型したものであり、第５図に示す
如く、適度な肉厚を有した円筒状の成型材であ
る。円筒状テルミツト成型材８の肉厚及び長さ
は、装填テルミツト剤の必要量及び成型体の強度
を考慮し、最適な値に決定される。 First, the cylindrical thermite molding material 8 used in this invention will be explained. The cylindrical thermite molding material 8 is made by mixing the thermite agent and a binder, such as a 5 wt % water glass aqueous solution, into a slurry, and then pouring it into a mold.
It is dried and solidified and demolded, and as shown in FIG. 5, it is a cylindrical molded material with an appropriate wall thickness. The wall thickness and length of the cylindrical thermite molded material 8 are determined to be optimal values, taking into consideration the required amount of charged thermite agent and the strength of the molded body.
こうして得られた円筒状テルミツト成型材８は
第６図に示す如く、母管１の一端若しくは両端よ
り複数個を押し込み挿入し、母管１全長に亘り装
填される。この場合、該円筒状テルミツト成型材
８同士は、なるべく密着した状態にすることが望
ましい。次に、この母管１をバンド７，７で固定
し、高速回転させ、該円筒状テルミツト成型材８
の内面に着火してテルミツト反応を起こさせ、母
管１内面に均一な厚みを有する金属―セラミツク
層を形成させる。 As shown in FIG. 6, a plurality of the thus obtained cylindrical thermite moldings 8 are pushed into the main pipe 1 from one end or both ends thereof, and are loaded over the entire length of the main pipe 1. In this case, it is desirable that the cylindrical thermite molded materials 8 are brought into close contact with each other as much as possible. Next, this main tube 1 is fixed with bands 7, 7 and rotated at high speed, and the cylindrical thermite molded material 8 is
The inner surface of the main tube 1 is ignited to cause a thermite reaction, and a metal-ceramic layer having a uniform thickness is formed on the inner surface of the main tube 1.
ところで、母管１内に装填された円筒状テルミ
ツト成型材８は、粉末状のテルミツト剤２に比
べ、着火し難い性質がある。その理由は、円筒状
テルミツト成型材８においては、粉末状のテルミ
ツト剤２と比べて、例えば、点火された花火のよ
うな着火材とではその接触部が少なく、且つ、接
触部の熱容量が大きいので容易に発火温度に達し
ないためである。そこで、第７図に示す如く、従
来使用している花火９の一部に、約10ｇの粉末テ
ルミツト剤１０を、包装材１１、例えば、紙、セ
ロフアン紙等で巻き付けた粉末テルミツト剤付花
火を使用すれば、前述の場合、着火が容易にな
る。この花火９の先端に点火すると、約５秒後に
粉末テルミツト剤１０に着火し、テルミツト反応
が開始される。従つて、花火９に取り付けた粉末
テルミツト剤１０に着火する直前に、粉末テルミ
ツト剤付花火を円筒状テルミツト成型材８の内面
へ投入すれば、前述の問題は解消される。 By the way, the cylindrical thermite molded material 8 loaded into the main tube 1 has a property that it is difficult to ignite compared to the powdered thermite agent 2. The reason for this is that the cylindrical thermite molded material 8 has fewer contact areas with an ignition material such as a lit firework than the powdered thermite agent 2, and the heat capacity of the contact area is large. This is because it does not easily reach the ignition temperature. Therefore, as shown in FIG. 7, fireworks with a powder thermite agent are made by wrapping about 10 g of a powder thermite agent 10 in a wrapping material 11, such as paper or cellophane paper, on a part of the conventionally used fireworks 9. If used, ignition will be facilitated in the aforementioned cases. When the tip of the firework 9 is ignited, the powdered thermite agent 10 is ignited about 5 seconds later, and a thermite reaction is started. Therefore, the above-mentioned problem can be solved by throwing the powdered thermite-attached fireworks into the inner surface of the cylindrical thermite molded material 8 immediately before the powdered thermite agent 10 attached to the fireworks 9 is ignited.
尚、母管１としては、予め製作されたものだけ
でなく、通常の遠心鋳造により金枠５に形成した
ものであつてもよいことは勿論である。 It goes without saying that the main tube 1 may not only be made in advance, but may also be formed in the metal frame 5 by ordinary centrifugal casting.
以上述べたように、この発明では予め成型した
円筒状テルミツト成型材８を用いるので、母管１
の長短及び管径の大小を問わず、母管１内に一様
な厚みを有する金属―セラミツク層を得ることが
できる。このように、円筒状テルミツト成型材８
を用いれば、従来の樋６による散布方法の欠点は
解消される。その上、金枠５の回転の軸線方向
は、水平に限定されないという利点もある。 As described above, in this invention, since the pre-molded cylindrical thermite molding material 8 is used, the main tube 1
A metal-ceramic layer having a uniform thickness can be obtained in the main tube 1 regardless of its length or the diameter of the tube. In this way, the cylindrical thermite molding material 8
By using this, the drawbacks of the conventional spraying method using the gutter 6 are eliminated. Furthermore, there is an advantage that the axial direction of rotation of the metal frame 5 is not limited to the horizontal direction.
次に、本発明の実施例を挙げる。 Next, examples of the present invention will be given.
実施例 １
母管として、外径165.2mm、内径151.0mm、全長
1500mmの鋼管を用い、この鋼管の一端より、外径
147mm、内径109mm、長さ300mmの円筒状テルミツ
ト成型材（5wt％水ガラス水溶液を粘結剤とし
て、粉末テルミツト剤５Kgを成型固化したもの）
５箇を、順次押し込み装填し、両端をバンドで固
定し高速回転を行ないながら、これらの円筒状テ
ルミツト成型材の内面に着火し、テルミツト反応
を起こさせ、金属―セラミツク層を鋼管内面に形
成させた。この方法で製作したセラミツク複合鋼
管は、従来の粉末テルミツト剤を樋で散布して製
作したものと比べて、品質は同等であり、その製
作効率は著しく向上したことが確認された。Example 1 As a main pipe, outer diameter 165.2 mm, inner diameter 151.0 mm, total length
Using a 1500mm steel pipe, from one end of this steel pipe, the outer diameter
Cylindrical thermite molding material of 147 mm, inner diameter 109 mm, and length 300 mm (5 kg of powdered thermite agent is molded and solidified using 5 wt% water glass aqueous solution as a binder)
Five tubes were pushed in and loaded one after another, and both ends were fixed with bands and while rotating at high speed, the inner surface of these cylindrical thermite molded materials was ignited, a thermite reaction occurred, and a metal-ceramic layer was formed on the inner surface of the steel tube. Ta. It was confirmed that the quality of ceramic composite steel pipes manufactured using this method was equivalent to that of conventional pipes manufactured by spraying powdered thermite with a gutter, and that the manufacturing efficiency was significantly improved.
実施例 ２
母管として、外径165.2mm、内径151.0mm、全長
3000mmの鋼管を使用する場合、母管の一端より樋
を挿入する方法では、樋の撓みのため実施不可能
であるので、従来は母管の両端より樋を挿入し散
布しなければならなかつた。これに対し、本発明
によれば、実施例１で使用した円筒状テルミツト
成型材10個を、鋼管の一端より順次押し込み挿入
することにより、テルミツト剤を管内に均一且つ
効率良く装填でき、最終製品として、均一な厚み
の金属―セラミツク層を有するセラミツク複合鋼
管を得ることができた。Example 2 As a main pipe, outer diameter 165.2 mm, inner diameter 151.0 mm, total length
When using a 3000mm steel pipe, it is impossible to insert a gutter from one end of the main pipe due to the flexure of the gutter, so conventionally it was necessary to insert a gutter from both ends of the main pipe for spraying. . In contrast, according to the present invention, by sequentially pushing and inserting the 10 cylindrical thermite molding materials used in Example 1 from one end of the steel pipe, the thermite agent can be uniformly and efficiently loaded into the pipe, and the final product As a result, a ceramic composite steel pipe with a metal-ceramic layer of uniform thickness could be obtained.
第１図及び第２図は、従来の遠心テルミツト法
による複合構造管の製造方法を示す横断面説明図
であり、第１図は、テルミツト反応前の装填状態
を、第２図は、金属―セラミツク層の被覆状態を
示している。第３図及び第４図は、従来のテルミ
ツト剤の散布方法の説明図で、散布用樋を挿入し
ている状態での縦断面図であり、第３図は、母管
の一端から、第４図は、母管の両端から樋を挿入
している状態を示している。第５図は、円筒状テ
ルミツト成型材の縦断面図、第６図は、複数の円
筒状テルミツト成型材を母管内に装填した状態を
示す縦断面説明図、第７図は、粉末テルミツト剤
付花火の縦断面図を示している。
１…母管、２…テルミツト剤、２ａ…散布用テ
ルミツト剤、３…金属層、４…セラミツク層、５
…金枠、６…樋、７…バンド、７ａ…中心孔、８
…円筒状テルミツト成型材。
1 and 2 are cross-sectional explanatory diagrams showing a method of manufacturing a composite structure pipe using the conventional centrifugal thermite method. FIG. 1 shows the loaded state before the thermite reaction, and FIG. The state of the ceramic layer coating is shown. Figures 3 and 4 are explanatory diagrams of the conventional method of dispersing thermite agent, and are longitudinal cross-sectional views with the dispersion gutter inserted. Figure 4 shows the gutter being inserted from both ends of the main pipe. Fig. 5 is a longitudinal cross-sectional view of a cylindrical thermite molding material, Fig. 6 is an explanatory longitudinal cross-sectional view showing a state in which a plurality of cylindrical thermite molding materials are loaded into the main pipe, and Fig. 7 is a longitudinal cross-sectional view of a cylindrical thermite molding material. A vertical cross-sectional view of fireworks is shown. DESCRIPTION OF SYMBOLS 1... Main tube, 2... Thermite agent, 2a... Thermite agent for dispersion, 3... Metal layer, 4... Ceramic layer, 5
...Gold frame, 6...Gutter, 7...Band, 7a...Center hole, 8
...Cylindrical thermite molding material.
Claims (1)
で該テルミツト剤を着火反応せしめ、母管内面に
テルミツト反応により生成された金属―セラミツ
ク層を被覆形成する方法において、円筒状テルミ
ツト成型材を、母管内に装填して後、遠心力場内
で、該円筒状テルミツト成型材に着火して、テル
ミツト反応を起こさせることを特徴とする複合構
造管の製造方法。1. A method in which a thermite agent is loaded into a main tube, the thermite agent is ignited in a centrifugal force field, and a metal-ceramic layer generated by the thermite reaction is coated on the inner surface of the main tube, in which a cylindrical thermite molding material is 1. A method for manufacturing a composite structure tube, which comprises loading the cylindrical thermite molding material into a main tube and then igniting the cylindrical thermite molding material in a centrifugal force field to cause a thermite reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58094359A JPS59218841A (en) | 1983-05-27 | 1983-05-27 | Manufacturing method of composite structure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58094359A JPS59218841A (en) | 1983-05-27 | 1983-05-27 | Manufacturing method of composite structure pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59218841A JPS59218841A (en) | 1984-12-10 |
| JPH0356180B2 true JPH0356180B2 (en) | 1991-08-27 |
Family
ID=14108098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58094359A Granted JPS59218841A (en) | 1983-05-27 | 1983-05-27 | Manufacturing method of composite structure pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59218841A (en) |
-
1983
- 1983-05-27 JP JP58094359A patent/JPS59218841A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59218841A (en) | 1984-12-10 |
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