JPH01225784A - Method for reforming surface of cylindrical structure - Google Patents
Method for reforming surface of cylindrical structureInfo
- Publication number
- JPH01225784A JPH01225784A JP63048560A JP4856088A JPH01225784A JP H01225784 A JPH01225784 A JP H01225784A JP 63048560 A JP63048560 A JP 63048560A JP 4856088 A JP4856088 A JP 4856088A JP H01225784 A JPH01225784 A JP H01225784A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical structure
- layer
- laser beams
- laser
- glazing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002407 reforming Methods 0.000 title abstract description 3
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は腐食環境で用いる円筒構造物の表面改質方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for surface modification of cylindrical structures used in corrosive environments.
（従来の技術）
従来、腐食環境で用いる円筒構造物の材料としては、耐
食性良好な材料を用いるとかあるいはその円筒構造物の
表面を耐食性に改質することで対処してきた。しかし、
従来の円筒構造物の表面改質は、その表面に塗料等を塗
布するとか、あるいはその表面にメツキ等を施して他種
金属を付加す′るのが通常であった。(Prior Art) Conventionally, materials for cylindrical structures used in corrosive environments have been dealt with by using materials with good corrosion resistance or by modifying the surface of the cylindrical structures to make them corrosion resistant. but,
Conventional surface modification of cylindrical structures has typically involved applying paint or the like to the surface, or applying plating or the like to the surface to add other metals.
最近、レーザビームによって表面を加熱、急冷する事で
非晶質層（アモルファス）を形成する方法（レーザグレ
ージング）が開発された。アモルファスは通常の金属材
料と巽なり結晶構造ではないため、耐食性、耐放射線特
性に優れているという利点がおる。Recently, a method (laser glazing) has been developed in which an amorphous layer is formed by heating and rapidly cooling the surface with a laser beam. Since amorphous does not have a crystalline structure like normal metal materials, it has the advantage of excellent corrosion resistance and radiation resistance.
第２図はレーザグレージング装置の構成図である。図に
おいて、試料２は回転円板１１上に固定され、回転モー
タ１０によって高速で移動される。レーザビーム１はガ
スシールド１２された雰囲気内を集束レンズ３を通して
試料２上に照射され、試料表面に短時間かつ大入熱の処
理を施す。レーザ光で加熱、照射された領域は試料自身
の熱伝導で急速に冷却され非晶質化する。このような非
晶質は、パワー密度２Ｘ１０５ ｗ／ｃｍ２程度のレ
ーザ光で５ｍ１秒程度の移動速度において１０６〜１０
８℃／秒の冷却速度の状態のとき形成される。FIG. 2 is a configuration diagram of the laser glazing device. In the figure, a sample 2 is fixed on a rotating disk 11 and is moved at high speed by a rotating motor 10. A laser beam 1 is irradiated onto a sample 2 through a focusing lens 3 in an atmosphere shielded by a gas shield 12, and the sample surface is subjected to a treatment with a large heat input in a short period of time. The region heated and irradiated with laser light is rapidly cooled by thermal conduction of the sample itself and becomes amorphous. Such an amorphous material has a laser beam with a power density of about 2 x 105 w/cm2 and a moving speed of about 5 m1 second.
It is formed when the cooling rate is 8° C./sec.
（発明が解決しようとする課題）
第３図はレーザグレージングによるアモルファス層の生
成プロセスを示したものである。図に示すように、レー
ザグレージングによって形成されたアモルファス層４，
４′は層間の境界層５゜５′で冷却速度の差から不均質
層が生成しており、この不均質層により改質層全体の均
一性に問題が生じ、割れ、ばくり等の欠点が生じた。(Problems to be Solved by the Invention) FIG. 3 shows the process of creating an amorphous layer by laser glazing. As shown in the figure, an amorphous layer 4 formed by laser glazing,
4' is a boundary layer between layers, 5°5', where an inhomogeneous layer is generated due to the difference in cooling rate, and this inhomogeneous layer causes problems in the uniformity of the entire modified layer, resulting in defects such as cracking and flaking. occurred.
このように従来のレーザグレージングは生成プロセスが
非常に短時間の割に、レーザのパワーで決まる改質領域
が出力密度プロフィールでコントロールしにくいため、
改質領域を容易に拡大できず、如何にして広範囲に均質
層を生成する事ができるかが問題となる。In this way, although the production process of conventional laser glazing is very short, the modified area determined by the laser power is difficult to control by the power density profile.
Since the modified area cannot be easily expanded, the problem is how to generate a homogeneous layer over a wide range.
本発明は上記事情に鑑みてなされたもので、その目的は
、レーザグレージングにより円筒構造物の表面を容易か
つ良好に改質できる円筒構造物の表面改質方法を提供す
ることにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide a method for modifying the surface of a cylindrical structure by which the surface of the cylindrical structure can be easily and favorably modified by laser glazing.
［発明の構成］
（課題を解決するための手段）
本発明は上記目的を達成するために、円筒＠漬物の耐食
性、耐放射線特性向上等のためにレーザグレージングを
用いてその表面にアモルファス層を生成する円筒構造物
の表面改質方法において、複数本のレーザ光をらせん状
に走査させて前記円筒構造物の表面を均質な改質層に生
成させることを特徴とするものでおる。[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention uses laser glazing to form an amorphous layer on the surface of the cylinder @ pickle in order to improve its corrosion resistance and radiation resistance. A method for modifying the surface of a cylindrical structure to be produced is characterized in that a plurality of laser beams are scanned in a spiral manner to produce a homogeneous modified layer on the surface of the cylindrical structure.
（作 用）
本発明の改質方法によると、生成されるアモルファス層
は冷却過程においてわずかの時間遅れをもって次のビー
ムによる加熱過程が含まれるため各ビームによる溶融・
冷却過程か混在することになる。従って複数ビームによ
る生成領域は均一生成層とみなせる領域となり、境目の
少ない表面改質が行なわれる。(Function) According to the reforming method of the present invention, the amorphous layer produced is melted and heated by each beam because the cooling process includes a heating process by the next beam with a slight time delay.
There will be a cooling process involved. Therefore, the region generated by the plurality of beams becomes a region that can be regarded as a uniformly generated layer, and surface modification is performed with few boundaries.
（実施例） 本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described with reference to FIG.
図に示すように、レーザ光１はビームガイド６中に複数
のレーザ光１を通し先端部でそれぞれオフセットされた
集束レンズ３の組で方向を変えられる。試料２の表面上
においてはそれぞれのビーム加熱領域がある程度重ねら
れるようセットされる。このビームガイド６を回転させ
ながら、１回転で１周期進むように軸方向に移動させる
ことで、比較的連続なアモルファス＠４が生成される。As shown in the figure, a plurality of laser beams 1 are passed through a beam guide 6 and the direction of the laser beam 1 is changed by a set of focusing lenses 3 offset from each other at the tip. On the surface of the sample 2, the respective beam heating regions are set so as to overlap to some extent. By rotating the beam guide 6 and moving it in the axial direction so that it advances one cycle per rotation, a relatively continuous amorphous @4 is generated.
したがって、本発明によると配管の内面に均一なアモル
ファス膜を生成することができる。また、レーザ光の方
向を変えて配管の外面に同様の処理を施す事もできる。Therefore, according to the present invention, a uniform amorphous film can be produced on the inner surface of the pipe. It is also possible to perform similar treatment on the outer surface of the pipe by changing the direction of the laser beam.
上記実施例はビーム側を回転する機構でビーム本数は５
本であるが、これは−例であり、試料（材料）側を回転
・移動させる機構としてもよく、また、ビーム本数も適
宜増減しても上記実施例と同様な効果を有する。The above embodiment has a mechanism that rotates the beam side, and the number of beams is 5.
However, this is just an example, and a mechanism for rotating and moving the sample (material) side may be used, and the number of beams may be increased or decreased as appropriate to obtain the same effect as the above embodiment.
［発明の効果］
以上説明したように、本発明によると、複数本のレーザ
光をらせん状に走査させる事によって一度に広く、均質
な改質層を得ることができ、また耐食性、耐放射線特性
に優れた表面層をもつ製品を製作することができる。[Effects of the Invention] As explained above, according to the present invention, by scanning a plurality of laser beams in a spiral shape, a wide and homogeneous modified layer can be obtained at once, and corrosion resistance and radiation resistance properties are improved. It is possible to produce products with an excellent surface layer.
第１図は本発明の一実施例の構成図、第２図は従来のレ
ーザグレージング装置の構成図、第３図は第２図のグレ
ージングによるアモルファス層の生成プロセスを示す概
略図である。
１・・・レーザ光
２・・・試料
３・・・集束レンズ
４．４′・・・アモルファス層
５．５′・・・境界層
６・・・ビームガイド
１０・・・モータ
１１・・・回転円板
１２・・・ガスシールド
（８７３３）代理人 弁理士 猪 股 祥 晃（ほか
１名）
第１図
第３図FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a conventional laser glazing apparatus, and FIG. 3 is a schematic diagram showing the process of producing an amorphous layer by glazing shown in FIG. 1... Laser beam 2... Sample 3... Focusing lens 4.4'... Amorphous layer 5.5'... Boundary layer 6... Beam guide 10... Motor 11... Rotating disk 12...Gas shield (8733) agent Patent attorney Yoshiaki Inomata (and others)
1 person) Figure 1 Figure 3
Claims (1)
ザグレージングを用いてその表面にアモルファス層を生
成する円筒構造物の表面改質方法において、複数本のレ
ーザ光をらせん状に走査させて前記円筒構造物の表面を
均質な改質層に生成させることを特徴とする円筒構造物
の表面改質方法。In a method for surface modification of a cylindrical structure in which an amorphous layer is generated on the surface of the cylindrical structure using laser glazing in order to improve the corrosion resistance, radiation resistance, etc. of the cylindrical structure, a plurality of laser beams are scanned in a spiral manner to improve the A method for modifying the surface of a cylindrical structure, characterized by forming a homogeneous modified layer on the surface of the cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048560A JPH01225784A (en) | 1988-03-03 | 1988-03-03 | Method for reforming surface of cylindrical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048560A JPH01225784A (en) | 1988-03-03 | 1988-03-03 | Method for reforming surface of cylindrical structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01225784A true JPH01225784A (en) | 1989-09-08 |
Family
ID=12806772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63048560A Pending JPH01225784A (en) | 1988-03-03 | 1988-03-03 | Method for reforming surface of cylindrical structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01225784A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018103707A (en) * | 2016-12-26 | 2018-07-05 | 本田技研工業株式会社 | Bonding structure and manufacturing method of the same |
| JP2018103424A (en) * | 2016-12-26 | 2018-07-05 | 本田技研工業株式会社 | Joint structure and method of producing the same |
| JP2018127722A (en) * | 2017-02-06 | 2018-08-16 | 株式会社ニデック | Dyeing apparatus and dyeing method |
| CN108772939A (en) * | 2018-05-29 | 2018-11-09 | 中国科学院上海硅酸盐研究所 | It is a kind of to be used to try green body of glaze and preparation method thereof |
| CN111375897A (en) * | 2018-12-29 | 2020-07-07 | 中国科学院长春光学精密机械与物理研究所 | Optical device for polishing metal surface |
-
1988
- 1988-03-03 JP JP63048560A patent/JPH01225784A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018103707A (en) * | 2016-12-26 | 2018-07-05 | 本田技研工業株式会社 | Bonding structure and manufacturing method of the same |
| JP2018103424A (en) * | 2016-12-26 | 2018-07-05 | 本田技研工業株式会社 | Joint structure and method of producing the same |
| US10486391B2 (en) | 2016-12-26 | 2019-11-26 | Honda Motor Co., Ltd. | Bonded structure and method for manufacturing the same |
| JP2018127722A (en) * | 2017-02-06 | 2018-08-16 | 株式会社ニデック | Dyeing apparatus and dyeing method |
| CN108772939A (en) * | 2018-05-29 | 2018-11-09 | 中国科学院上海硅酸盐研究所 | It is a kind of to be used to try green body of glaze and preparation method thereof |
| CN108772939B (en) * | 2018-05-29 | 2019-12-17 | 中国科学院上海硅酸盐研究所 | blank for glaze test and preparation method thereof |
| CN111375897A (en) * | 2018-12-29 | 2020-07-07 | 中国科学院长春光学精密机械与物理研究所 | Optical device for polishing metal surface |
| CN111375897B (en) * | 2018-12-29 | 2021-06-15 | 中国科学院长春光学精密机械与物理研究所 | Optical device for polishing metal surface |
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