JP3095257B2 - Method and apparatus for forming a coating on the outer surface of an elongated rod - Google Patents
Method and apparatus for forming a coating on the outer surface of an elongated rodInfo
- Publication number
- JP3095257B2 JP3095257B2 JP03153722A JP15372291A JP3095257B2 JP 3095257 B2 JP3095257 B2 JP 3095257B2 JP 03153722 A JP03153722 A JP 03153722A JP 15372291 A JP15372291 A JP 15372291A JP 3095257 B2 JP3095257 B2 JP 3095257B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- heat treatment
- spraying
- film
- elongated rod
- 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
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、細長い棒状体、例え
ば、特に水平且つ両端のみを支持した場合、その重量に
起因した撓みにより、中間で支持しなければ正常な回転
を付与出来ない流動床ボイラーチューブのようなものに
対して、溶射または吹付けを行なうことにより、均一な
皮膜を形成する方法及びその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elongate rod-shaped body, for example, a fluidized bed which cannot be provided with a normal rotation unless it is supported in the middle due to its bending due to its weight, especially when it is supported horizontally and only at both ends. The present invention relates to a method and an apparatus for forming a uniform film by spraying or spraying a material such as a boiler tube.
【０００２】[0002]
【従来の技術】細長い棒状体の一つである流動床ボイラ
ーチューブ(以下、ボイラーチューブという）は、使用
中に種々の高温流動媒体と直接接触し、この接触が原因
となって腐食したり摩耗するため、比較的短期間での点
検，取替えを余儀無くされていた。そこで、何らかの表
面処理を施すことが検討された結果、従来、耐食性や耐
摩耗性が良好で熱伝導率も良好な皮膜を形成しやすい溶
射処理が有効な方法と考えられ、実施されてきた。2. Description of the Related Art A fluidized-bed boiler tube (hereinafter, referred to as a boiler tube), which is one of elongated rods, comes into direct contact with various high-temperature fluidized media during use, and the contact causes corrosion or wear. Therefore, inspection and replacement in a relatively short time had to be performed. Therefore, as a result of studying to apply some surface treatment, conventionally, a thermal spraying treatment which is easy to form a film having good corrosion resistance and abrasion resistance and good thermal conductivity has been considered and implemented as an effective method.
【０００３】然し乍ら、この溶射処理を良好な状態で行
なうためには、被溶射体である前記ボイラーチューブに
何らかの形で安定且つ均一な回転を付与する必要がある
が、実際面で直径Ｄ＝30mm、長さＬ＝15,000mmで、Ｄ／
Ｌ＝500となるようなボイラーチューブに中間支持を設
けずに上記のような回転を付与することは容易ではな
い。このため、中間支持を設けるか、またはボイラーチ
ューブを垂直にした状態で回転を付与する方法が考えら
れるが、前者の方法は、溶射のためのブラスト処理面或
いは多層盛りのものにあっては、前溶射面を支持部材に
より損傷させて良好な皮膜を得られず、また、後者の方
法においては、建屋高さが数十ｍの工場を必要とするた
め、そのような工場を有するもの以外は施工出来ない。
従って、細長い棒状体を中間支持部材を用いることな
く、水平状態を維持して回転を付与しながらその外面に
溶射処理や吹付処理を施す方法及び装置が開発されれ
ば、極めて有用されるものと考えられる。[0003] However, in order to perform this thermal spraying process in a good condition, it is necessary to impart a stable and uniform rotation to the boiler tube, which is the thermal spraying target, in some form. , Length L = 15,000mm, D /
It is not easy to apply the above rotation without providing an intermediate support in a boiler tube where L = 500. For this reason, it is conceivable to provide an intermediate support or to apply rotation in a state where the boiler tube is vertical, but the former method is a blasting surface for thermal spraying or a multi-layered one, A good coating cannot be obtained by damaging the front sprayed surface with the support member, and the latter method requires a factory with a building height of several tens of meters, except for those having such a factory. Cannot be constructed.
Therefore, if a method and apparatus for applying a thermal spraying process or a spraying process to the outer surface thereof while applying rotation while maintaining a horizontal state without using an intermediate support member on an elongated rod-like body are developed, it is extremely useful. Conceivable.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、ボイラーチ
ューブのような直径が比較的小さく、長さが極めて長い
棒状体を、水平状態を維持したまま、それに回転を付与
しながら、溶射処理や吹付処理を施工できる方法及び装
置を提供することを、課題とするものである。SUMMARY OF THE INVENTION According to the present invention, a rod-like body having a relatively small diameter and an extremely long length, such as a boiler tube, is subjected to a thermal spraying process while rotating it while maintaining a horizontal state. An object of the present invention is to provide a method and an apparatus capable of performing a spraying process.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
することを目的としてなされたもので、その方法の構成
は、細長い棒状体の外面に、種々の金属やセラミックス
またはプラスチックを溶射或いは吹付けにより皮膜を形
成するに際し、前記棒状体を水平に保持すると共にその
両端に該棒状体の塑性変形応力以下の張力を加え乍ら回
転を付与し、この状態を維持したまま、溶射装置または
吹付装置を移動させて、前記成形体の外面に皮膜を形成
することを特徴とするものであり、また、装置の構成
は、細長い棒状体を水平にしてその両端部を把持した状
態で、該棒状体に撓みが殆ど無くなるまで引張して該棒
状体に常に一定の張力を付与する装置と、張力を付与さ
れた細長い棒状体を回転させる装置と、前記棒状体の長
手方向に移動しながら該棒状体に皮膜形成材を溶射また
は吹付ける装置とから成ることを特徴とするものであ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the method is configured by spraying or spraying various metals, ceramics or plastics on the outer surface of an elongated rod. In forming a film by applying the rod, the rod is held horizontally, and rotation is applied to both ends thereof while applying a tension equal to or less than the plastic deformation stress of the rod. The apparatus is moved to form a film on the outer surface of the molded body, and the apparatus is configured such that an elongated rod-shaped body is horizontal and both ends are gripped. A device that constantly applies a constant tension to the bar by pulling until the body is almost free of bending, a device that rotates the elongated bar with the tension applied, and a device that moves in the longitudinal direction of the bar. It is characterized in that comprising a rod-shaped body attached spray or spray device a film forming material.
【０００６】即ち、本発明は、細長い棒状体の外面に各
種溶射処理や吹付処理を施すに際し、該棒状体を水平に
すると共にその両端に該棒状体の塑性変形応力以下の張
力を加えて、その重量による撓みを著しく小さく抑え、
この状態で回転を付与することにより、均一な回転を得
られるので、均一，良質な皮膜を形成することが出来
る。また、溶射処理後、溶射処理された部分に再溶融加
熱処理を施す場合、前記張力を加えた状態を維持したま
ま、再溶融加熱処理装置を溶射装置と同様に移動させな
がら施工することにより、良質の製品を得られるし、ま
た、前記再溶融加熱処理を施すべき部分の両端側をクラ
ンプして支持すると共に電極となるクランプ電極装置
を、細長い棒状体の長手方向に摺動自在に配設して、通
電加熱により再溶融加熱処理を施工するようにすれば、
溶射処理に続いて簡易な操作により再溶融加熱処理を施
すことが可能となる。更に、前記再溶融加熱処理に際し
て、前記張力を加えると共に回転を付与すれば、均一な
再溶融加熱処理を施すことが出来る。That is, according to the present invention, when performing various thermal spraying treatments or spraying treatments on the outer surface of an elongated rod-like body, the rod-like body is made horizontal and a tension less than the plastic deformation stress of the rod-like body is applied to both ends thereof. The deflection due to its weight is extremely small,
By applying rotation in this state, uniform rotation can be obtained, so that a uniform and high quality film can be formed. Further, after the thermal spraying process, when performing the re-melting heat treatment on the spray-treated portion, while maintaining the state where the tension is applied, by moving the re-melting heat treatment device in the same manner as the spraying device, while performing the construction, A high-quality product can be obtained, and a clamp electrode device which clamps and supports both ends of the portion to be subjected to the re-melting heat treatment and serves as an electrode is slidably disposed in the longitudinal direction of the elongated rod. Then, if the re-melting heat treatment is performed by energizing heating,
After the thermal spraying treatment, the re-melting heat treatment can be performed by a simple operation. Furthermore, if the tension is applied and the rotation is applied during the remelting heat treatment, a uniform remelting heat treatment can be performed.
【０００７】[0007]
【実施例】次に本発明の実施の一例を図により説明す
る。図１は本発明を実施する装置により、ボイラーチュ
ーブに溶射施工を行なっている状態を示す正面図、図２
は溶射処理後に再溶融加熱処理を行なうためのクランプ
電極装置を細長い棒状体の長手方向に摺動自在に配設し
た状態を示す正面図である。図１において、１は回転装
置、２，2aはチャック、３は細長い棒状体であるボイラ
ーチューブ、４は溶射ガン（付帯設備は図示せず）、５
は回転支持部、６はスラストベアリング、７は回転固定
部、８はロードセル（支持計器は図示せず）、９は油圧
ジャッキ、10は油圧ポンプ、11は溶射ガン４を移動させ
る移動台、12は支持台、13は油圧ホースであって、前記
チャック２，油圧ジャッキ９及びロードセル８により、
ボイラーチューブ３を水平にしてその皮膜を形成すべき
部の把持した状態でボイラーチューブ３に撓みが殆ど無
くなるまで引張して該ボイラーチューブ３に常に一定の
張力を付与する構成とし、回転装置１により、張力を付
与されたボイラーチューブ３を回転させる装置を構成す
る。また、図２において、14，14aはボイラーチューブ
３の皮膜3aを形成された部分の両側に摺動自在に装着し
たクランプ電極装置である。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a state in which thermal spraying is being performed on a boiler tube by an apparatus embodying the present invention.
FIG. 4 is a front view showing a state in which a clamp electrode device for performing a re-melting heat treatment after a thermal spraying treatment is slidably disposed in a longitudinal direction of an elongated rod-shaped body. In FIG. 1, 1 is a rotating device, 2 and 2a are chucks, 3 is a boiler tube as an elongated rod, 4 is a thermal spray gun (ancillary equipment is not shown), 5
Reference numeral 6 denotes a rotary support portion, 6 denotes a thrust bearing, 7 denotes a rotation fixed portion, 8 denotes a load cell (supporting instruments are not shown), 9 denotes a hydraulic jack, 10 denotes a hydraulic pump, 11 denotes a moving table for moving the spray gun 4, 12 Is a support base, and 13 is a hydraulic hose, which is provided by the chuck 2, the hydraulic jack 9 and the load cell 8.
The boiler tube 3 is leveled, and the boiler tube 3 is stretched until there is almost no bending while holding the portion where the film is to be formed. And a device for rotating the boiler tube 3 to which tension has been applied. In FIG. 2, reference numerals 14 and 14a denote clamp electrode devices slidably mounted on both sides of a portion of the boiler tube 3 where the coating 3a is formed.
【０００８】而して、本発明は次のようにして実施され
る。まず、ボイラーチューブ３を水平にしてチャック
２，２によりつかみ、油圧ポンプ10及び油圧ジャッキ９
によりロードセル８の読取値がボイラーチューブ３の塑
性変形応力以下の適宜の値で、該ボイラーチューブ３の
撓みがなくなるまで張力を付与するのであるが、この張
力は、油圧ポンプ10に具えられている圧力調節バルブ
（図示せず）により保持され、溶射中の熱或いは他の要
因によりボイラーチューブ３が伸びた場合にも自動的に
調節，保持されるようになっている。このようにしてボ
イラーチューブ３に所定の張力を付与した状態で、回転
装置１によりボイラーチューブ３に所定の回転を付与す
る。この回転はスラストベアリング６により遮断され、
且つ、回転固定部７によりロードセル８や油圧ジャッキ
９には一切伝達されないようになっている。このよう
に、ボイラーチューブ３に張力と回転を付与しながら、
溶射ガン４の移動台11を適当な速さで送り、皮膜が所定
厚さになるまで溶射を繰り返すことによって、所定の皮
膜が形成されるのである。Accordingly, the present invention is implemented as follows. First, the boiler tube 3 is held horizontally and gripped by the chucks 2 and 2, and the hydraulic pump 10 and the hydraulic jack 9 are held.
Thus, a tension is applied until the bending value of the boiler tube 3 is eliminated with an appropriate value equal to or less than the plastic deformation stress of the boiler tube 3 when the read value of the load cell 8 is applied. The boiler tube 3 is held by a pressure control valve (not shown), and is automatically adjusted and held even when the boiler tube 3 is extended due to heat during spraying or other factors. With the predetermined tension applied to the boiler tube 3 in this manner, the rotation device 1 applies a predetermined rotation to the boiler tube 3. This rotation is interrupted by the thrust bearing 6,
Further, the rotation is not transmitted at all to the load cell 8 or the hydraulic jack 9 by the rotation fixing portion 7. Thus, while applying tension and rotation to the boiler tube 3,
By moving the movable base 11 of the spray gun 4 at an appropriate speed and repeating the spraying until the film has a predetermined thickness, a predetermined film is formed.
【０００９】上記のようにして、ボイラーチューブ３に
皮膜が形成されたら、それに引き続き、前述のクランプ
電極装置14，14aにより通電加熱して再溶融加熱処理を
行なうのであるが、この熱処理に際しても、ボイラーチ
ューブ３に回転を付与した状態で行なうことにより、均
一な熱処理を行なうことが出来る。After the film is formed on the boiler tube 3 as described above, the re-melting heat treatment is carried out by applying current through the clamp electrode devices 14 and 14a. By performing the rotation in a state where the boiler tube 3 is rotated, a uniform heat treatment can be performed.
【００１０】尚、上記実施例においては、溶射による皮
膜の形成について述べたが、本発明はこれに限定される
ものではなく、皮膜形成を吹き付けにより行なう場合に
も適用される。また、本発明の対象となる棒状体とは、
上記のボイラーチューブのような無視できない撓みの生
じるようなもので、中空であるか中実であるかは問わな
い。In the above embodiment, the formation of a coating by thermal spraying has been described. However, the present invention is not limited to this, and is also applicable to a case where the coating is formed by spraying. In addition, the rod-shaped object of the present invention,
It is such a thing that non-negligible bending occurs like the boiler tube described above, and it does not matter whether it is hollow or solid.
【００１１】[0011]
【発明の効果】本発明は上述の通りであるから、ボイラ
ーチューブのような細長い棒状体の外面に皮膜を形成す
る場合、中間に支持部材を設けることなく、また、特に
高い建屋を必要としないで、容易且つ安全に溶射や吹き
付けにより皮膜を形成することが出来る。Since the present invention is as described above, when a film is formed on the outer surface of an elongated rod-like body such as a boiler tube, no support member is provided in the middle and no particularly high building is required. Thus, a coating can be easily and safely formed by spraying or spraying.
【図１】本発明を実施する装置により、ボイラーチュー
ブに溶射施工を行なっている状態を示す正面図。FIG. 1 is a front view showing a state in which thermal spraying is being performed on a boiler tube by an apparatus embodying the present invention.
【図２】溶射処理後に再溶融加熱処理を行なうためのク
ランプ電極装置を細長い棒状体の長手方向に摺動自在に
配設した状態を示す正面図。FIG. 2 is a front view showing a state in which a clamp electrode device for performing a re-melting heating process after a thermal spraying process is slidably disposed in a longitudinal direction of an elongated rod.
１ 回転装置 ２ チャック 2a チャック ３ ボイラーチューブ 3a 被膜を形成された部分 ４ 溶射ガン ５ 回転支持部 ６ スラストベアリング ７ 回転固定部 ８ ロードセル ９ 油圧ジャッキ 10 油圧ポンプ 11 溶射ガン移動台 12 支持台 13 油圧ホース 14 クランプ電極装置 14a クランプ電極装置 DESCRIPTION OF SYMBOLS 1 Rotating device 2 Chuck 2a Chuck 3 Boiler tube 3a Coated part 4 Spray gun 5 Rotation support part 6 Thrust bearing 7 Rotation fixed part 8 Load cell 9 Hydraulic jack 10 Hydraulic pump 11 Spray gun moving base 12 Support base 13 Hydraulic hose 14 Clamp electrode device 14a Clamp electrode device
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B05C 5/00 101 B05C 11/00 - 11/08 B05D 1/26 F22B 37/10 602 Continuation of the front page (58) Field surveyed (Int. Cl. 7 , DB name) B05C 5/00 101 B05C 11/00-11/08 B05D 1/26 F22B 37/10 602
Claims (6)
ラミックスまたはプラスチックを溶射或いは吹付けによ
り皮膜を形成するに際し、前記棒状体を水平に保持する
と共にその両端に該棒状体の塑性変形応力以下の張力を
加え乍ら回転を付与し、この状態を維持したまま、溶射
装置または吹付装置を移動させて、前記成形体の外面に
皮膜を形成することを特徴とする細長い棒状体の外面に
皮膜を形成する方法。When forming a coating on the outer surface of an elongated rod by spraying or spraying various metals, ceramics or plastics, the rod is held horizontally and plastic deformation stress of the rod is applied to both ends thereof. Rotation is applied while applying the following tension, and while maintaining this state, the thermal spraying device or the spraying device is moved to form a film on the outer surface of the molded body. A method of forming a film.
面に皮膜を形成した後、該棒状体を水平に保持すると共
にその両端に該棒状体の塑性変形応力以下の張力を加
え、又は張力を加え乍ら回転を付与し、この状態を維持
したまま、再溶融加熱処理装置を移動させて、再溶融加
熱処理を行なうことを特徴とする細長い棒状体の外面に
皮膜を形成する方法。2. A film is formed on the outer surface of an elongated rod according to the method of claim 1, and the rod is held horizontally and a tension less than the plastic deformation stress of the rod is applied to both ends thereof. A method for forming a film on the outer surface of an elongated rod-shaped body, wherein a re-melting heat treatment is performed by moving a re-melting heat treatment apparatus while maintaining this state while applying rotation.
を施すべき部分の両端側をクランプして支持すると共に
電極となるクランプ電極装置から成り、これを細長い棒
状体の長手方向に摺動自在になるように配設して、通電
加熱により再溶融加熱処理を施すことを特徴とする請求
項２に記載の方法。3. A re-melting heat treatment device comprises a clamp electrode device which clamps and supports both ends of a portion to be subjected to re-melting heat treatment and serves as an electrode, and slides the same in the longitudinal direction of an elongated rod. The method according to claim 2, wherein the heat treatment is performed by performing re-melting heat treatment by electric heating.
把持した状態で、該棒状体に撓みが殆ど無くなるまで引
張して該棒状体に常に一定の張力を付与する装置と、張
力を付与された細長い棒状体を回転させる装置と、前記
棒状体の長手方向に移動しながら該棒状体に皮膜形成材
を溶射または吹付ける装置とから成ることを特徴とする
細長い棒状体の外面に皮膜を形成する装置。4. An apparatus for applying a constant tension to the rod by pulling the rod in a state where the rod is almost bent without substantially bending the elongated rod while holding both ends thereof, and applying tension to the rod. And a device for spraying or spraying a film-forming material on the rod while moving in the longitudinal direction of the rod, wherein the coating is applied to the outer surface of the elongated rod. Forming equipment.
動自在に配設した請求項４に記載の装置。5. The apparatus according to claim 4, wherein a re-melting heat treatment device is slidably disposed on the elongated rod.
を施すべき部分の両端側をクランプして支持すると共に
電極となるクランプ電極装置から成る請求項５に記載の
装置。6. The apparatus according to claim 5, wherein the remelting heat treatment device comprises a clamp electrode device which clamps and supports both ends of a portion to be subjected to the remelting heat treatment and serves as an electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03153722A JP3095257B2 (en) | 1991-05-30 | 1991-05-30 | Method and apparatus for forming a coating on the outer surface of an elongated rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03153722A JP3095257B2 (en) | 1991-05-30 | 1991-05-30 | Method and apparatus for forming a coating on the outer surface of an elongated rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH081059A JPH081059A (en) | 1996-01-09 |
| JP3095257B2 true JP3095257B2 (en) | 2000-10-03 |
Family
ID=15568670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03153722A Expired - Lifetime JP3095257B2 (en) | 1991-05-30 | 1991-05-30 | Method and apparatus for forming a coating on the outer surface of an elongated rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3095257B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207288A (en) * | 2011-03-30 | 2012-10-25 | Dai Ichi High Frequency Co Ltd | Pipe externally coated with self-fluxing alloy and method for manufacturing the same |
| JP5875063B2 (en) * | 2011-11-25 | 2016-03-02 | 第一高周波工業株式会社 | Method for manufacturing protector for metal tube material |
| JP6012089B2 (en) * | 2015-08-04 | 2016-10-25 | 第一高周波工業株式会社 | Method for manufacturing protector for metal member |
| JP6909560B2 (en) * | 2016-04-19 | 2021-07-28 | 第一高周波工業株式会社 | Base material support device |
-
1991
- 1991-05-30 JP JP03153722A patent/JP3095257B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH081059A (en) | 1996-01-09 |
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