JPS62103357A - Surface treatment of thermally sprayed film - Google Patents
Surface treatment of thermally sprayed filmInfo
- Publication number
- JPS62103357A JPS62103357A JP24514185A JP24514185A JPS62103357A JP S62103357 A JPS62103357 A JP S62103357A JP 24514185 A JP24514185 A JP 24514185A JP 24514185 A JP24514185 A JP 24514185A JP S62103357 A JPS62103357 A JP S62103357A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- film
- thermally sprayed
- surface treatment
- sprayed film
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はタービンやコンプレッサー等の動翼や静翼に適
用される耐熱耐食、耐摩耗溶射被膜の表面処理方法に関
するもので、その他、ち密な表面被覆層の形成が必要と
されるエンジン部品、工具等に適用が可能である。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a surface treatment method for heat-resistant, corrosion-resistant and wear-resistant sprayed coatings applied to moving blades and stationary blades of turbines, compressors, etc. It can be applied to engine parts, tools, etc. that require the formation of a surface coating layer.
タービン翼を例に挙げて説明する。タービン翼表面の耐
高温腐食性を向上させる従来技術の方法としては、プラ
ズマ、高温ガス等を用いた溶射法または物理蒸着法によ
ってＣｒ２Ｏ３、Ｍ’−０ｒ−Ａ、ｔ−Ｙ等のセラミッ
クス、金属の被覆層を形成する方法が採用されている。This will be explained using a turbine blade as an example. Conventional methods for improving the high-temperature corrosion resistance of turbine blade surfaces include coating ceramics and metals such as Cr2O3, M'-0r-A, and t-Y by thermal spraying or physical vapor deposition using plasma, high-temperature gas, etc. A method of forming a coating layer has been adopted.
（ＭシまＮＪＯｏなどを意味する。）
〔発明が解決しようとする問題点〕
従来技術のうち、溶射による方法では、溶射被膜中に多
数の空孔が発生し耐食性が不充分である。従って、母材
表面にそれらの被膜を溶射形成後、非酸化性雰囲気の加
熱炉に被膜部材を投入する等の方法により溶射被膜層を
母材と共に高温に加熱することにより溶射被膜層のち密
性は向上し、密着性も増すが、母材には加熱によるひず
み等の熱影響が生じる欠点がある。一方。(Means M-stain NJOo, etc.) [Problems to be Solved by the Invention] Among the conventional techniques, in the thermal spraying method, a large number of pores are generated in the thermally sprayed coating, resulting in insufficient corrosion resistance. Therefore, after thermally spraying these coatings on the surface of the base material, the thermal sprayed coating layer is heated to a high temperature together with the base material by a method such as putting the coating member into a heating furnace with a non-oxidizing atmosphere, thereby improving the density of the thermally sprayed coating layer. However, the base material has the disadvantage of being affected by heat, such as distortion due to heating. on the other hand.
物理蒸着法（イオンブレーティング）による方法では、
溶射被膜厚さは、１００μｍ程度が限度であるため、長
時間の耐久性に乏しい不具合がある。そこで本発明では
、これら従来技術の欠点を克服し、ち密で充分な厚さを
有する溶射被膜を母材に変形を起こすことなく形成する
ことを目的としている。In the physical vapor deposition method (ion brating),
Since the maximum thickness of the sprayed coating is about 100 μm, there is a problem in that it lacks long-term durability. SUMMARY OF THE INVENTION The present invention aims to overcome these drawbacks of the prior art and to form a thermally sprayed coating that is dense and has a sufficient thickness without causing deformation of the base material.
本発明は、溶射によって母材の表面に形成された被膜の
みをレーザ・ビームで加熱し、母材にはほとんど熱を加
えずにち密で充分な厚さを有する溶射被膜を母材表面に
形成するようにしたものである。The present invention uses a laser beam to heat only the coating formed on the surface of the base material by thermal spraying, and forms a dense and sufficiently thick thermal sprayed coating on the surface of the base material without applying much heat to the base material. It was designed to do so.
母材表面に形成された溶射被膜のち密化を図る手段とし
てレーザ・ビームを用いることにより、非常に短時間に
溶射被膜の表面のみを加熱することができ２表面に溶射
被膜が形成された母材への熱影響を極力抑えることが可
能となる。By using a laser beam as a means to densify the sprayed coating formed on the surface of the base material, it is possible to heat only the surface of the sprayed coating in a very short time. This makes it possible to minimize the effects of heat on the material.
従って、変形を生じ易く複雑な形状の部品であっても、
レーザ・ビームの加熱によっても変形を生じない。Therefore, even if the parts are easily deformed and have complex shapes,
No deformation occurs even when heated by a laser beam.
本発明の効果を検証するため、低合金鋼からお
なる母材上にプラズマ溶射法によって、 Ｃｒ ２０３
を厚さ０．５ Ｍで溶射後、 Ｃｏ□レーザを用いて２
ビーム径を８咽、送り速度を毎分１ｍに調整し。In order to verify the effects of the present invention, Cr 203 was applied onto a base material made of low alloy steel by plasma spraying.
After thermal spraying with a thickness of 0.5 M, 2
Adjust the beam diameter to 8 mm and feed speed to 1 m/min.
↓ ↓
した。レーザ・ビーム加熱による母材への影響は、ミク
ロ組織においても２寸法、形状の変化においても、全（
認められながった。↓ ↓ I did. The effect of laser beam heating on the base material is total (
It wasn't recognized.
更に５０℃の亜硫酸ガス中で、上記溶射波ｉ試験結果を
まとめて示している。Furthermore, the results of the above-mentioned thermal spray wave i test in sulfur dioxide gas at 50° C. are shown together.
第 １ 表
＊Ｓ０２ガス中、２００Ｈｒ保持（５０℃）レーザＮビ
ーム施行条件
出 力 ３ｋｗ
ビーム径 ８鵡
送り速度 １ｙｒｔ／馴
〔発明の効果〕
溶射によって母材表面に形成した溶射被膜をレーザ・ビ
ーム照射によって加熱し、溶射被膜をち密化することに
より、溶射被膜の厚さが厚くても、ち密な溶射被膜が母
材表面上に形成可能となり、しかも母材への熱影響を与
えないで済むため、熱変形による母材の強度低下等を防
止できる等１本発明は産業の発達に寄与するところが太
きい。Table 1 * Laser N beam execution conditions in S02 gas for 200 hours (50°C) Output 3kw Beam diameter 8mm Feed rate 1yrt/tread [Effects of the invention] Thermal spray coating formed on the surface of the base material by thermal spraying is applied to the laser beam. By heating through irradiation and making the sprayed coating denser, even if the sprayed coating is thick, a dense sprayed coating can be formed on the surface of the base material without causing any thermal effects on the base material. Therefore, the present invention greatly contributes to the development of industry, such as being able to prevent a decrease in the strength of the base material due to thermal deformation.
示す斜視図である。
１・・・母材、２・・・溶射被膜、３・・・レーザ・ビ
ーム、４・・・ビーム照射後の溶射被膜。
、パ゛
代；里人 辰 間 暁FIG. DESCRIPTION OF SYMBOLS 1... Base material, 2... Thermal spray coating, 3... Laser beam, 4... Thermal spray coating after beam irradiation. , Paiyo; Satoto Tatsuma Akira
Claims (1)
ビームによって加熱して、ち密ではく離し難い表面層を
形成することを特徴とする溶射被膜の表面処理法。A surface treatment method for thermal spray coatings, which is characterized by heating the coating formed by thermal spraying on the outer surface of a base material using a laser beam to form a dense and difficult-to-peel surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514185A JPS62103357A (en) | 1985-10-31 | 1985-10-31 | Surface treatment of thermally sprayed film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514185A JPS62103357A (en) | 1985-10-31 | 1985-10-31 | Surface treatment of thermally sprayed film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62103357A true JPS62103357A (en) | 1987-05-13 |
Family
ID=17129230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24514185A Pending JPS62103357A (en) | 1985-10-31 | 1985-10-31 | Surface treatment of thermally sprayed film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62103357A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02274863A (en) * | 1989-04-18 | 1990-11-09 | Matsushita Electric Ind Co Ltd | Treatment of thermally-sprayed film |
| JPH05255832A (en) * | 1992-03-13 | 1993-10-05 | Hitachi Ltd | Surface modifying method for structure and metal-explosion spraying apparatus |
| US5484980A (en) * | 1993-02-26 | 1996-01-16 | General Electric Company | Apparatus and method for smoothing and densifying a coating on a workpiece |
| JP2021042453A (en) * | 2019-09-13 | 2021-03-18 | 株式会社東芝 | Coating method and coating structure |
-
1985
- 1985-10-31 JP JP24514185A patent/JPS62103357A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02274863A (en) * | 1989-04-18 | 1990-11-09 | Matsushita Electric Ind Co Ltd | Treatment of thermally-sprayed film |
| JPH05255832A (en) * | 1992-03-13 | 1993-10-05 | Hitachi Ltd | Surface modifying method for structure and metal-explosion spraying apparatus |
| US5484980A (en) * | 1993-02-26 | 1996-01-16 | General Electric Company | Apparatus and method for smoothing and densifying a coating on a workpiece |
| JP2021042453A (en) * | 2019-09-13 | 2021-03-18 | 株式会社東芝 | Coating method and coating structure |
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