JPH0610114A - Method for treating surface of high temperature sliding part of heat resistant alloy - Google Patents
Method for treating surface of high temperature sliding part of heat resistant alloyInfo
- Publication number
- JPH0610114A JPH0610114A JP19312192A JP19312192A JPH0610114A JP H0610114 A JPH0610114 A JP H0610114A JP 19312192 A JP19312192 A JP 19312192A JP 19312192 A JP19312192 A JP 19312192A JP H0610114 A JPH0610114 A JP H0610114A
- Authority
- JP
- Japan
- Prior art keywords
- high temperature
- resistant alloy
- heat resistant
- oxide film
- chromium
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は耐摩耗性の向上、固着防
止を図ることができる耐熱合金の高温摺動部表面処理法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method for a high temperature sliding portion of a heat resistant alloy capable of improving wear resistance and preventing sticking.
【０００２】[0002]
【従来の技術】従来、ボイラ配管のスライドステーやガ
スタービン翼のねじり角度可変支持機構のような摺動部
材は、高温雰囲気下における機械的性質や耐食性が優れ
ているＮｉ基或いはＣＯ基の耐熱合金、或いはこれらの
耐熱合金に酸化処理を施したものが用いられている。2. Description of the Related Art Conventionally, sliding members such as slide stays for boiler pipes and variable torsion angle support mechanisms for gas turbine blades have a Ni-based or CO-based heat-resistant material that has excellent mechanical properties and corrosion resistance in a high temperature atmosphere. Alloys or those obtained by subjecting these heat-resistant alloys to an oxidation treatment are used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記し
た表面が未処理の耐熱合金、又は表面に酸化処理を施し
た耐熱合金は高温雰囲気下で使用すると摺動面となる表
面は時間的な経過にともなって耐摩耗性が低下し固着す
る等の問題を有していた。However, the above-mentioned heat-resistant alloy whose surface has not been treated or the heat-resistant alloy whose surface has been oxidized is used in a high-temperature atmosphere, and the surface which becomes the sliding surface is subject to lapse of time. Along with this, there is a problem in that the wear resistance is lowered and sticking occurs.
【０００４】本発明の目的は、上記従来の問題点に鑑み
てなしたもので、耐摩耗性の向上、固着防止を図ること
ができる耐熱合金の高温摺動部表面処理法を提供するこ
とを目的とする。An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a surface treatment method for a high temperature sliding portion of a heat resistant alloy capable of improving wear resistance and preventing sticking. To aim.
【０００５】[0005]
【課題を解決するための手段】本手段のうち第１の手段
は、Ｎｉ基或いはＣＯ基の耐熱合金より構成された摺動
表面をクロム粉末で覆ったうえクロマイズ・コーテング
処理をしてクロム富化層を形成し、１０００〜１１００
℃の近傍の大気中で加熱して表面部に高温酸化膜を形成
させるとともに、該高温酸化膜の直下に内部酸化により
生成されたクロム酸化物粒子を微細に分散させ、その後
切削、研磨等により前記高温酸化膜を除去するものであ
り、又第２の手段はＮｉ基或いはＣＯ基の耐熱合金より
構成された摺動表面をアルミニウム粉末で覆ったうえア
ルミナイズ・コーテング処理をしてアルミニウム富化層
を形成し、１０００〜１１００℃の近傍の大気中で加熱
して表面部に高温酸化膜を形成させるとともに、該高温
酸化膜の直下に内部酸化により生成されたアルミニウム
酸化物粒子を微細に分散させ、その後切削、研磨等によ
り前記高温酸化物膜を除去するものである。The first means of this means is to cover the sliding surface made of a heat-resistant alloy of Ni-base or CO-base with chrome powder, and then subject it to chromizing coating and chromium-rich treatment. Forming a oxidization layer, 1000 to 1100
While heating in the atmosphere near ℃ to form a high-temperature oxide film on the surface, the chromium oxide particles generated by internal oxidation are finely dispersed directly under the high-temperature oxide film, and then by cutting, polishing, etc. The second means is to remove the high temperature oxide film, and the second means is to cover the sliding surface made of a Ni-based or CO-based heat-resistant alloy with aluminum powder and subject it to an aluminizing coating to enrich the aluminum. A layer is formed and heated in the atmosphere near 1000 to 1100 ° C. to form a high temperature oxide film on the surface portion, and aluminum oxide particles generated by internal oxidation are finely dispersed directly under the high temperature oxide film. Then, the high temperature oxide film is removed by cutting, polishing or the like.
【０００６】[0006]
【作用】何れの手段においても、耐熱合金の高温摺動部
表面の耐摩耗性は向上し、固着防止が図られる。By any means, the wear resistance of the surface of the high temperature sliding portion of the heat resistant alloy is improved, and sticking is prevented.
【０００７】[0007]
【実施例】以下、本発明の実施例を添付図面に基づいて
説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【０００８】図１及び図２は本発明の一実施例を示す。1 and 2 show an embodiment of the present invention.
【０００９】図１において、Ｎｉ基或いはＣＯ基の耐熱
合金１で構成される部材の摺動面の表面をクロム粉末で
覆ったうえクロマイズ・コーテング処理をしてクロム富
化層２を形成し、１０００〜１１００℃の近傍の大気中
で加熱して表面部に高温酸化膜を形成するとともに、該
高温酸化膜の直下に内部酸化により生成されたクロム酸
化物（Ｃｒ2Ｏ3）粒子３を微細に分散させ、その後切
削、研磨等により前記高温酸化膜を除去することにより
本発明のものが得られる。In FIG. 1, a chromium-enriched layer 2 is formed by coating the surface of the sliding surface of a member composed of a Ni-based or CO-based heat-resistant alloy 1 with chromium powder and subjecting it to chromizing coating. A high temperature oxide film is formed on the surface by heating in the atmosphere near 1000 to 1100 ° C., and chromium oxide (Cr 2 O 3 ) particles 3 generated by internal oxidation are finely formed immediately below the high temperature oxide film. And then the high temperature oxide film is removed by cutting, polishing or the like to obtain the product of the present invention.
【００１０】図２は、表面未処理シャフト及び表面処理
シャフトの高温摺動部表面における時間の経過に伴なう
摩耗量の比較結果を示す。FIG. 2 shows the results of comparison of the amount of wear of the surface-untreated shaft and the surface-treated shaft on the surfaces of the high-temperature sliding parts over time.
【００１１】すなわち、材質としてＮｉ基の耐熱合金イ
ンコネル７１３Ｃで作られたシャフト４（図３参照）の
表面を（Ａ）未処理のもの、（Ｂ）高温加熱して酸化皮
膜を生成したもの、（Ｃ）クロマイズ・コーテング処理
をしてクロム富化層を形成し、高温加熱して表面直下に
クロム酸化物粒子を微細に分散させた本発明のものを９
００℃で２０Ｋｇｆ負荷にて夫々図３に示すセラミック
（Ｓｉ3Ｎ4）製スリーブ５に対して嵌合させて摺動表面
における時間の経過に伴うシャフトの摩耗量の変化を示
している。That is, the surface of the shaft 4 (see FIG. 3) made of Ni-based heat-resistant alloy Inconel 713C as a material is (A) untreated, (B) heated at a high temperature to form an oxide film, (C) A chrome-enriched layer is formed by chromizing coating, and heated at a high temperature to finely disperse chromium oxide particles immediately below the surface.
3 shows changes in the wear amount of the shaft over time on the sliding surface by fitting the ceramic (Si 3 N 4 ) sleeve 5 shown in FIG. 3 under a load of 20 kgf at 00 ° C.
【００１２】図２で明らかなように本発明の（Ｃ）は他
のものの（Ａ）及び（Ｂ）と比較して優れた耐摩耗性を
有していることが判る。又、摩擦係数が小さいため固着
防止の効果が達成できる。As is apparent from FIG. 2, it can be seen that (C) of the present invention has excellent wear resistance as compared with the other (A) and (B). Further, since the coefficient of friction is small, the effect of preventing sticking can be achieved.
【００１３】図４は本発明の他の実施例を示す。FIG. 4 shows another embodiment of the present invention.
【００１４】耐熱合金１で構成される部材の摺動面の表
面をアルミニウム粉末で覆ったうえアルミナイズ・コー
テング処理してアルミニウム富化層６を形成し、１００
０〜１１００℃の近傍の大気中で加熱して表面部に高温
酸化膜を形成するとともに、該高温酸化膜の直下に内部
酸化により、生成されたアルミニウム酸化物（Ａｌ
2Ｏ3）粒子７を微細に分散させ、その後切削、研磨等に
よって前記高温酸化物を除去して本発明のものが得ら
れ、その結果、上記の実施例と同様に優れた耐摩耗性を
有し、固着防止の効果が達成できる。The surface of the sliding surface of the member made of the heat-resistant alloy 1 is covered with aluminum powder and aluminized and coated to form the aluminum-enriched layer 6, and 100
The aluminum oxide (Al oxide generated by internal oxidation immediately under the high temperature oxide film is formed by heating in the atmosphere near 0 to 1100 ° C. to form a high temperature oxide film on the surface.
2 O 3 ) particles 7 are finely dispersed, and then the high temperature oxide is removed by cutting, polishing or the like to obtain the one of the present invention. As a result, excellent wear resistance is obtained as in the above-mentioned Examples. The effect of preventing sticking can be achieved.
【００１５】[0015]
【発明の効果】上記した本発明の耐熱合金の高温摺動部
表面処理法によれば高温域における耐摩耗性が向上し固
着を防止することができる優れた効果を奏し得る。EFFECTS OF THE INVENTION According to the surface treatment method for the high temperature sliding portion of the heat resistant alloy of the present invention described above, the abrasion resistance in the high temperature region is improved and the excellent effect of preventing sticking can be obtained.
【図１】本発明の耐熱合金の高温摺動部表面処理法の一
実施例を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing an example of a surface treatment method for a high temperature sliding portion of a heat resistant alloy of the present invention.
【図２】表面未処理シャフト及び表面処理シャフトの高
温摺動部表面における時間経過に伴なう摩耗量の比較を
示すものである。FIG. 2 shows a comparison of the amount of wear of the surface-untreated shaft and the surface-treated shaft on the surfaces of high-temperature sliding parts with the passage of time.
【図３】スリーブに対しシャフトを摺動させた状態を示
すものである。FIG. 3 shows a state in which a shaft is slid on a sleeve.
【図４】本発明の耐熱合金の高温摺動部表面処理法の他
の実施例を示す縦断面図である。FIG. 4 is a vertical sectional view showing another embodiment of the surface treatment method for the high temperature sliding portion of the heat resistant alloy of the present invention.
１ 耐熱合金 ２ クロム富化層 ３ クロム酸化物粒子 ４ シャフト ５ スリーブ ６ アルミニウム富化層 ７ アルミニウム酸化物粒子 1 Heat Resistant Alloy 2 Chromium Enrichment Layer 3 Chromium Oxide Particles 4 Shaft 5 Sleeve 6 Aluminum Enrichment Layer 7 Aluminum Oxide Particles
Claims (2)
された摺動表面をクロム粉末で覆ったうえクロマイズ・
コーテング処理をしてクロム富化層を形成し、１０００
〜１１００℃の近傍の大気中で加熱して表面部に高温酸
化膜を形成させるとともに、該高温酸化膜の直下に内部
酸化により生成されたクロム酸化物粒子を微細に分散さ
せ、その後切削、研磨等により前記高温酸化膜を除去す
ることを特徴とする耐熱合金の高温摺動部表面処理法。1. A sliding surface made of a Ni-based or CO-based heat-resistant alloy is covered with chrome powder and then chromized.
The coating is treated to form a chromium-rich layer,
˜1100 ° C. is heated in the atmosphere to form a high temperature oxide film on the surface, and the chromium oxide particles generated by internal oxidation are finely dispersed immediately below the high temperature oxide film, and then cut and polished. A method for surface treatment of a high temperature sliding portion of a heat resistant alloy, characterized in that the high temperature oxide film is removed by, for example,
された摺動表面をアルミニウム粉末で覆ったうえアルミ
ナイズ・コーテング処理をしてアルミニウム富化層を形
成し、１０００〜１１００℃の近傍の大気中で加熱して
表面部に高温酸化膜を形成させるとともに、該高温酸化
膜の直下に内部酸化により生成されたアルミニウム酸化
物粒子を微細に分散させ、その後切削、研磨等により前
記高温酸化物膜を除去することを特徴とする耐熱合金の
高温摺動部表面処理法。2. An aluminum-enriched layer is formed by covering an aluminum powder on a sliding surface made of a Ni-based or CO-based heat-resistant alloy and subjecting it to an aluminizing coating process. While heating in the atmosphere to form a high temperature oxide film on the surface, aluminum oxide particles generated by internal oxidation are finely dispersed immediately below the high temperature oxide film, and then the high temperature oxide is formed by cutting, polishing or the like. A high-temperature sliding surface treatment method for heat-resistant alloys, characterized by removing the film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04193121A JP3116578B2 (en) | 1992-06-26 | 1992-06-26 | High temperature sliding surface treatment method for heat resistant alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04193121A JP3116578B2 (en) | 1992-06-26 | 1992-06-26 | High temperature sliding surface treatment method for heat resistant alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0610114A true JPH0610114A (en) | 1994-01-18 |
| JP3116578B2 JP3116578B2 (en) | 2000-12-11 |
Family
ID=16302613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04193121A Expired - Fee Related JP3116578B2 (en) | 1992-06-26 | 1992-06-26 | High temperature sliding surface treatment method for heat resistant alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116578B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093260A (en) * | 1996-04-30 | 2000-07-25 | Surface Engineered Products Corp. | Surface alloyed high temperature alloys |
| US6503347B1 (en) | 1996-04-30 | 2003-01-07 | Surface Engineered Products Corporation | Surface alloyed high temperature alloys |
| WO2008133320A1 (en) | 2007-04-19 | 2008-11-06 | Nisshin Steel Co., Ltd. | Exhaust guide part of turbocharger with nozzle vane |
| JP2009179884A (en) * | 2009-05-18 | 2009-08-13 | National Institute For Materials Science | Heat-resistant ferritic steel |
| CN103725858A (en) * | 2013-12-24 | 2014-04-16 | 江苏大学 | Photochemical in-situ preparation method of patterned uniform chromium oxide film |
| JP2014238143A (en) * | 2013-06-07 | 2014-12-18 | 株式会社東芝 | Valve device and valve device manufacturing method |
-
1992
- 1992-06-26 JP JP04193121A patent/JP3116578B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093260A (en) * | 1996-04-30 | 2000-07-25 | Surface Engineered Products Corp. | Surface alloyed high temperature alloys |
| US6503347B1 (en) | 1996-04-30 | 2003-01-07 | Surface Engineered Products Corporation | Surface alloyed high temperature alloys |
| WO2008133320A1 (en) | 2007-04-19 | 2008-11-06 | Nisshin Steel Co., Ltd. | Exhaust guide part of turbocharger with nozzle vane |
| US8206091B2 (en) | 2007-04-19 | 2012-06-26 | Nisshin Steel Co., Ltd. | Exhaust guide member of nozzle vane-type turbocharger |
| JP2009179884A (en) * | 2009-05-18 | 2009-08-13 | National Institute For Materials Science | Heat-resistant ferritic steel |
| JP2014238143A (en) * | 2013-06-07 | 2014-12-18 | 株式会社東芝 | Valve device and valve device manufacturing method |
| CN103725858A (en) * | 2013-12-24 | 2014-04-16 | 江苏大学 | Photochemical in-situ preparation method of patterned uniform chromium oxide film |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3116578B2 (en) | 2000-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |