JPS63129102A - Antierosive steam turbine blade - Google Patents
Antierosive steam turbine bladeInfo
- Publication number
- JPS63129102A JPS63129102A JP27178386A JP27178386A JPS63129102A JP S63129102 A JPS63129102 A JP S63129102A JP 27178386 A JP27178386 A JP 27178386A JP 27178386 A JP27178386 A JP 27178386A JP S63129102 A JPS63129102 A JP S63129102A
- Authority
- JP
- Japan
- Prior art keywords
- film
- tin
- turbine blade
- coating
- coated
- 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
- 230000000772 anti-erosive effect Effects 0.000 title 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000007733 ion plating Methods 0.000 claims abstract description 6
- 230000003628 erosive effect Effects 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 abstract description 20
- 238000000576 coating method Methods 0.000 abstract description 20
- 230000000704 physical effect Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000006210 lotion Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は蒸気ドレンによる耐二ローション性を向上した
蒸気タービン用ブレードに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blade for a steam turbine that has improved resistance to lotion due to steam drain.
従来から蒸気タービンのブレードには、蒸気の湿りによ
って形成されるドレンの衝突で、ドＶ７エロージヨンが
発生している。この対策として最近では、イオンプレー
テイング法で耐エロージヨン性があるＴｉＮのような被
膜をブレード表面にをコーテイングして対応している。BACKGROUND ART Conventionally, V7 erosion has occurred on steam turbine blades due to collision of condensate formed by wet steam. Recently, as a countermeasure to this problem, the blade surface is coated with a film such as TiN which has erosion resistance using an ion plating method.
蒸気タービンブレードの材質は一般的にＪＩａ日σ８４
１０Ｊ工のような１５Ｃｒ ステンレス系材料であシ、
これらの表面には周知の通り化学的に不活性な不働態被
膜が形成さｎており、この表面に直接ＴｉＨの被膜をイ
オングレーティフグ法でをコーテイングした場合、被膜
の密着強度が弱く容易に剥離している。The material of steam turbine blades is generally JIa σ84.
Made of 15Cr stainless steel material like 10J,
As is well known, a chemically inert passive film is formed on these surfaces, and when a TiH film is directly coated on this surface using the ion grating method, the adhesion strength of the film is weak and it is easy to coat. It has peeled off.
本出願人は上記剥離現象の回避が可能な前記不働態被膜
の表面に化学的に活性であるＯｒ ををコーテイングし
、続いてこのＯｒの表面にＴｉＮををコーテイングした
積層のをコーテイング被膜を有する耐エロージヨン性被
膜を既に提案（特願昭６０−９６６６９号参照）してい
るが、この積層をコーテイング被膜においても、ブレー
ドの耐二ローション性に対しては若干の問題がある。The present applicant has a laminated coating film in which the surface of the passive film is coated with chemically active Or, which can avoid the above-mentioned peeling phenomenon, and then TiN is coated on the surface of this Or. Although an erosion-resistant coating has already been proposed (see Japanese Patent Application No. 60-96669), even with this laminated coating, there are some problems with respect to the lotion resistance of the blade.
即ち、金属のＯｒとセラミックスのＴｉＮとては物性値
の差が大きいため密着強度が低いと言う問題がある。That is, there is a problem in that the adhesion strength is low because there is a large difference in physical properties between the metal Or and the ceramic TiN.
本発明は上記提案被膜における金属Ｏｒ とセラミック
スであるＴｉＮの密着性不足という問題点を解決し得た
耐二ローション性被膜を有する蒸気タービンブレードを
提供しようとするものである。The present invention aims to provide a steam turbine blade having a two-lotion resistant coating that can solve the problem of insufficient adhesion between the metal Or and the ceramic TiN in the above-mentioned proposed coating.
本発明は、蒸気タービンブレードの表面にイオンプレー
ティノブによって、Ｃｒ被膜をコーテイングし、続いて
この表面に成分かで１からＴＩＮに徐々に変化する濃度
勾配を設けた被膜ををコーテイングして最外層をＴｉＮ
とした積層被膜ををコーテイングしてなることを特徴と
する耐二ローション性蒸気タービンブレードである。In the present invention, a Cr film is coated on the surface of a steam turbine blade using an ion plating knob, and then a film with a concentration gradient that gradually changes from 1 to TIN depending on the components is coated on the surface. TiN outer layer
This is a two-lotion resistant steam turbine blade characterized by being coated with a laminated film of:
すなわち、本発明は前記提案の積層被膜ををコーテイン
グしたブレードの問題を改善するため、前記Ｃｒ被膜表
面に、初期は全量Ｔ１成分ををコーテイングし、次第に
ＴｉＮ成分濃度が多くなるような濃度勾配があるＴ１と
ＴｉＮからなる被膜ををコーテイングし、最表層は全量
ＴｉＮとする積層被膜ををコーテイングしてなることを
特徴とするタービンブレードである。That is, in order to improve the problem of the blade coated with the proposed laminated film, the present invention coats the surface of the Cr film with the entire amount of T1 component, and then creates a concentration gradient in which the TiN component concentration gradually increases. This turbine blade is characterized in that it is coated with a film made of a certain T1 and TiN, and the outermost layer is coated with a laminated film made entirely of TiN.
本発明の濃度勾配を設けた被膜の作用はＯｒとＴｉ１ｌ
の境界において極端に大きな物性の差がなくな夛、蒸気
ドレンの衝撃的な外圧に対し、破壊さｎにくいため、耐
エロージヨン性が向上する。The action of the film with a concentration gradient according to the present invention is that of Or and Ti1l.
Since there is no extremely large difference in physical properties at the boundary between the two, erosion resistance is improved because it is less likely to be destroyed by the impactful external pressure of the steam drain.
〔実施例コ
第１図はイオンプレーテイング法で製作した本発明の被
膜構成を示す断面図であシ、第１図中１はブレード、２
はＣｒ被膜５はＴ１とＴｉＮが混在してこｎら成分の濃
度勾配が設けらｎている被膜である。即ち、Ｃｒ膜２側
は全量Ｔ１成分であり、表面に向って次第にＴ１成分が
減少し、ＴｉＮ成分が増大する濃度変化がある被膜であ
る。この被！ＩＸ３はＴ１を蒸発させなからＮ２の供給
量を次第に増大することによって可能である。[Example 1] Figure 1 is a sectional view showing the structure of the coating of the present invention manufactured by the ion plating method. In Figure 1, 1 is a blade, 2 is
The Cr film 5 is a film in which T1 and TiN are mixed and a concentration gradient of these components is provided. That is, the Cr film 2 side has a total amount of T1 component, and the film has a concentration change such that the T1 component gradually decreases and the TiN component increases toward the surface. This cover! IX3 is possible by gradually increasing the amount of N2 supplied without evaporating T1.
４は全量ＴｉＮとした表層の被膜である。4 is a surface layer coating made entirely of TiN.
第２図は先に提案した耐エロージヨン性被膜の膜構成で
あり、同種の膜は同一符号で示す。FIG. 2 shows the structure of the erosion-resistant coating previously proposed, and the same type of coating is designated by the same reference numeral.
第３図は本発明の積層被膜と従来のＯｒとＴｉＮとから
なる積層被膜のエロージョン性を時間と重量減少の様子
で比較したものでＴｏシ、本発明の積層被膜の膜構成は
Ｃｒ膜２は１０μｍであり、Ｔ１とＴｉＮの混在被膜３
は２μｍであって、表層のＴｉＮ被膜４は五５μｍであ
る。−万の先に提案した耐二ローション性被膜の積層被
膜の膜構成はＣｒ膜２は１０μｍであシ、表層のＴｉＮ
被膜４は五５μｍである。Figure 3 compares the erosion properties of the laminated coating of the present invention and the conventional laminated coating consisting of Or and TiN in terms of time and weight loss. is 10 μm, and the mixed film 3 of T1 and TiN
is 2 μm, and the surface TiN coating 4 is 55 μm. - The film structure of the laminated film of the two lotion-resistant films proposed earlier is that the Cr film 2 is 10 μm thick, and the surface layer is TiN.
Coating 4 has a thickness of 55 μm.
この第３図に示した二ローション性の評価は第４図に示
したように、第１図および第２図の被膜０構成のサンプ
ルＢを超音波を伝達するホーンムに取付は被膜Ｃ表面を
水面下２ｍの位置に設置し、ホーンＡに超音波（出力Ｉ
ＮＦ、周波数１ ａ ５ ＫＨ２，振幅２５ ｐｍ）
を印加する。この時、被膜Ｃ近傍の水中では気泡とジェ
ット水流が発生し、これらが激しく、被膜０表面に衝突
し、キャビテーションエロージョンが被膜Ｃ表面に生じ
、被膜の重量減少が生じる。この試験はタービンのドレ
ンエロージョンを加速的に再現したものであり、短時間
で耐エロー１ジヨン性の評価が可能である。The evaluation of the lotion properties shown in Fig. 3 was carried out as shown in Fig. 4. Sample B, which had no coating in Figs. It is installed at a position 2 m below the water surface, and the horn A is equipped with ultrasonic waves (output I
NF, frequency 1 a 5 KH2, amplitude 25 pm)
Apply. At this time, bubbles and water jets are generated in the water near the coating C, and these violently collide with the surface of the coating 0, causing cavitation erosion on the surface of the coating C, resulting in a decrease in the weight of the coating. This test reproduces the drain erosion of a turbine in an accelerated manner, making it possible to evaluate erosion resistance in a short period of time.
第５図の結果によれば、本発明の積層被膜の重量減少が
小さく、耐エロージョン性が向上している。According to the results shown in FIG. 5, the weight loss of the laminated film of the present invention is small and the erosion resistance is improved.
実施例の結果の通り、本発明はタービンブレードの耐エ
ロージヨン性が向上し、タービンの運転寿命が延長し、
長期にわたって安全操業が可能になる。As the results of the examples show, the present invention improves the erosion resistance of turbine blades, extends the operating life of the turbine,
Safe operation becomes possible over a long period of time.
第１図は、本発明の積層被膜構成の断面図、第２図は先
に提案した積層被膜構成の断面図、第３図は耐エロージ
ヨン性の評価結果を示す図表、第４図は耐二ローション
性の評価方法の説明図である。Fig. 1 is a cross-sectional view of the laminated film structure of the present invention, Fig. 2 is a cross-sectional view of the laminated film structure proposed earlier, Fig. 3 is a chart showing the evaluation results of erosion resistance, and Fig. 4 is a cross-sectional view of the laminated film structure of the present invention. FIG. 2 is an explanatory diagram of a method for evaluating lotion properties.
Claims (1)
よつて、Ｃｒ被膜をコーテイングし、続いてこの表面に
成分がＴｉからＴｉＮに徐々に変化する濃度勾配を設け
た被膜をコーテイングして最外層をＴｉＮとした積層被
膜をコーテイングしてなることを特徴とする耐エロージ
ヨン性蒸気タービンブレード。A Cr film was coated on the surface of the steam turbine blade by ion plating, and then a film with a concentration gradient in which the components gradually changed from Ti to TiN was coated on the surface to form the outermost layer of TiN. An erosion-resistant steam turbine blade characterized by being coated with a laminated film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27178386A JPS63129102A (en) | 1986-11-17 | 1986-11-17 | Antierosive steam turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27178386A JPS63129102A (en) | 1986-11-17 | 1986-11-17 | Antierosive steam turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63129102A true JPS63129102A (en) | 1988-06-01 |
Family
ID=17504789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27178386A Pending JPS63129102A (en) | 1986-11-17 | 1986-11-17 | Antierosive steam turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63129102A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7026057B2 (en) * | 2002-01-23 | 2006-04-11 | Moen Incorporated | Corrosion and abrasion resistant decorative coating |
| JP2008536050A (en) * | 2005-04-14 | 2008-09-04 | シーメンス アクチエンゲゼルシヤフト | Steam turbine equipment components, steam turbine equipment, and utilization and manufacturing methods of steam turbine equipment components |
| EP2154265A1 (en) * | 2008-08-07 | 2010-02-17 | Mitsubishi Heavy Industries, Ltd. | Part for rotary machine and its method of manufacture |
| CN107326360A (en) * | 2017-07-13 | 2017-11-07 | 西安交通大学 | A kind of erosion resistant coating structure of nanometer multilayer graded composite and preparation method thereof |
| CN107326361A (en) * | 2017-07-13 | 2017-11-07 | 西安交通大学 | Gradient multi-layer composite coatings structure with high-impact corrosion energy and preparation method thereof |
| CN106222600B (en) * | 2016-08-31 | 2018-05-22 | 中国人民解放军装甲兵工程学院 | A kind of method that atmospheric environment moderate supersonic speed plasma spraying prepares Ti-TiN gradient coatings |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319325A (en) * | 1976-08-09 | 1978-02-22 | Shigeji Sugaya | Structural tough gypsum board reinforced with canvas laths etc |
| JPS61257466A (en) * | 1985-05-09 | 1986-11-14 | Mitsubishi Heavy Ind Ltd | Erosion-resisting film |
-
1986
- 1986-11-17 JP JP27178386A patent/JPS63129102A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319325A (en) * | 1976-08-09 | 1978-02-22 | Shigeji Sugaya | Structural tough gypsum board reinforced with canvas laths etc |
| JPS61257466A (en) * | 1985-05-09 | 1986-11-14 | Mitsubishi Heavy Ind Ltd | Erosion-resisting film |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7026057B2 (en) * | 2002-01-23 | 2006-04-11 | Moen Incorporated | Corrosion and abrasion resistant decorative coating |
| JP2008536050A (en) * | 2005-04-14 | 2008-09-04 | シーメンス アクチエンゲゼルシヤフト | Steam turbine equipment components, steam turbine equipment, and utilization and manufacturing methods of steam turbine equipment components |
| EP2154265A1 (en) * | 2008-08-07 | 2010-02-17 | Mitsubishi Heavy Industries, Ltd. | Part for rotary machine and its method of manufacture |
| JP2010059534A (en) * | 2008-08-07 | 2010-03-18 | Mitsubishi Heavy Ind Ltd | Component for rotary machine, method for production thereof, steam turbine and compressor |
| US8043730B2 (en) | 2008-08-07 | 2011-10-25 | Mitsubishi Heavy Industries, Ltd. | Part for rotary machine, and manufacturing method therefor |
| CN106222600B (en) * | 2016-08-31 | 2018-05-22 | 中国人民解放军装甲兵工程学院 | A kind of method that atmospheric environment moderate supersonic speed plasma spraying prepares Ti-TiN gradient coatings |
| CN107326360A (en) * | 2017-07-13 | 2017-11-07 | 西安交通大学 | A kind of erosion resistant coating structure of nanometer multilayer graded composite and preparation method thereof |
| CN107326361A (en) * | 2017-07-13 | 2017-11-07 | 西安交通大学 | Gradient multi-layer composite coatings structure with high-impact corrosion energy and preparation method thereof |
| CN107326361B (en) * | 2017-07-13 | 2020-08-28 | 西安交通大学 | Gradient multilayer composite coating structure with high erosion resistance and preparation method thereof |
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