JPH03194102A - Erosion shield material brazing device for turbine blade - Google Patents

Erosion shield material brazing device for turbine blade

Info

Publication number
JPH03194102A
JPH03194102A JP33150889A JP33150889A JPH03194102A JP H03194102 A JPH03194102 A JP H03194102A JP 33150889 A JP33150889 A JP 33150889A JP 33150889 A JP33150889 A JP 33150889A JP H03194102 A JPH03194102 A JP H03194102A
Authority
JP
Japan
Prior art keywords
erosion shield
turbine blade
shield material
brazing
erosion
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
Application number
JP33150889A
Other languages
Japanese (ja)
Other versions
JP2671531B2 (en
Inventor
Koji Furuya
古屋 弘次
Azuma Shimura
志村 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP1331508A priority Critical patent/JP2671531B2/en
Publication of JPH03194102A publication Critical patent/JPH03194102A/en
Application granted granted Critical
Publication of JP2671531B2 publication Critical patent/JP2671531B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • B23Q3/062Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/063Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding turbine blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To eliminate generation of defective units by putting a solder material on an erosion shield part of a turbine blade fixed by a fixing table, by clamping this shield material through pressurization by a clamping mechanism with a desired clamping force and by brazing it through high-frequency heating. CONSTITUTION:In brazing an erosion shield material 20 to a turbine blade 1, the blade 1 supports a front edge part 1a and a head part 1b of the blade 1 with L-shaped blocks 3a and 3b mounted on a fixing table 2, and a rear edge part of the blade 1 with a C clamp 7, respectively. Next, a high-frequency heating coil 8 is arranged by a supporting tool near an erosion shield part 1c of the blade 1, and a block 11... supported on a retainer 13 by a pin 12 and the shield material 20 arranged at the shield part 1c through a solder material 19 are pressed and supported by a clamping mechanism. Then, electric current is supplied to the high-frequency heating coil 8 so as to high-frequency heat the neighborhood of the shield part 1c and braze the shield material 20.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば地熱発電設備に使用される蒸気タービ
ンのように、地熱蒸気がタービンブレードに当たる部位
(以下前縁部と記する)に、硬質の耐摩耗性、耐食性の
エロージョンシールド材をろう付けするタービンブレー
ドのエロージョンシールド材ろう付け装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides, for example, a steam turbine used in geothermal power generation equipment, in which geothermal steam hits a turbine blade at a portion (hereinafter referred to as a leading edge portion). The present invention relates to a turbine blade erosion shield material brazing device that brazes a hard wear-resistant and corrosion-resistant erosion shield material.

〔従来の技術〕[Conventional technology]

タービンブレードのエロージョンシールドは、従来ター
ビンブレード前縁部に、この前縁部の曲率に合わせた硬
質の耐摩耗性、耐食性の例えばコバルト、クロム、タン
グステンならびにその他の金属元素を所望の割合で含ん
だ合金(ステライト(商標名))からなるエロージョン
シールド材をろう付けして行う。すなわち、タービンブ
レード前縁部に板状の銀ろうを介してエローシコンシー
ルド材を挟み込み、C字形フレームと締付けねじとから
成る市販のしゃこ万力等の締付け機構により、所望の位
置にエロージョンシールド材を締付け、タービンブレー
ドの焼入温度より低い温度でガス加熱して、銀ろうを溶
かし、タービンブレード前縁部にエロージョンシールド
材をろう付けしていた。
Erosion shields for turbine blades are conventionally made by adding hard, wear-resistant and corrosion-resistant materials such as cobalt, chromium, tungsten, and other metal elements in desired proportions to the leading edge of the turbine blade to match the curvature of the leading edge. This is done by brazing an erosion shield material made of an alloy (Stellite (trade name)). That is, the erosion shielding material is sandwiched between the front edge of the turbine blade through a plate-shaped silver solder, and the erosion shielding material is placed in the desired position using a tightening mechanism such as a commercially available shako vise consisting of a C-shaped frame and a tightening screw. was tightened and heated with gas at a temperature lower than the quenching temperature of the turbine blade to melt the silver solder and braze the erosion shield material to the leading edge of the turbine blade.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来は、しゃこ万力等の固定機構により、銀ろうを介し
てエロージョンシールド材を挟み込み締付けしているが
、銀ろうが溶けるに従って銀ろうの厚さが変わるために
締付け力が変化し、この締付け力の管理が困難である。
Conventionally, the erosion shield material is sandwiched and tightened through silver solder using a fixing mechanism such as a mantis vise, but as the silver solder melts, the thickness of the silver solder changes, so the tightening force changes, making this tightening difficult. Difficult to manage power.

また手作業によるガス加熱により銀ろうを溶かしている
ため、加熱温度と加熱時間の管理などの作業条件がきび
しい。
Furthermore, since the silver solder is melted by manual gas heating, the work conditions such as controlling the heating temperature and heating time are strict.

従来この作業条件の維持を作業者の熟練によっているが
、このような熟練した作業者を多数集めることは困難で
あり、タービンブレード製作上のネックになっていた。
Conventionally, maintaining these working conditions has depended on the skill of the workers, but it has been difficult to gather a large number of such skilled workers, which has been a bottleneck in the production of turbine blades.

しかもタービンブレードは多品種、多数あるため、一つ
のタービンについてエロージョンシールドを短期間で行
うためには多数の作業者でエロージョンシールド材の締
付け、ガス加熱によるろう付けを行わなければならない
。このとき、熟練した作業者に代えて、未熟練作業者が
作業すると、タービンブレードに対するエロージョンシ
ールド材の締付け不良や、加熱の不通などにより、エロ
ージョンシールド材の浮上りなどのろう付け不良品が発
生し、再度ろう付け作業をやり直したり、または折角加
工されたタービンブレードを不良品として廃却しなけれ
ばならないという問題があった。
Moreover, since there are many different types of turbine blades, in order to provide erosion shielding for one turbine in a short period of time, a large number of workers must tighten the erosion shield material and perform brazing by gas heating. At this time, if an unskilled worker performs the work instead of a skilled worker, the erosion shield material may not be properly tightened to the turbine blade, or the heating may not be properly connected, resulting in defective brazing such as floating of the erosion shield material. However, there was a problem in that the brazing work had to be redone or the turbine blades that had been painstakingly machined had to be discarded as defective products.

本発明は、前記従来技術の問題点を解決し、タービンブ
レードのエロージョンシールド材ろう付けの際、銀ろう
が溶けて銀ろうの厚さが変わっても押付け力が殆ど変化
することなく管理が容易であり、また銀ろうを溶かすた
めの加熱温度と加熱時間の管理などの作業条件が容易に
維持できる、タービンブレードのエロージョンシールド
材のろう付け装置を提供することを目的としている。
The present invention solves the problems of the prior art, and when brazing the erosion shield material of turbine blades, the pressing force hardly changes even if the silver solder melts and the thickness of the silver solder changes, making it easy to manage. Another object of the present invention is to provide a brazing device for erosion shielding material for turbine blades, in which work conditions such as heating temperature and heating time for melting silver solder can be easily maintained.

〔課題を解決するための手段〕[Means to solve the problem]

前記の課題を解決するため、本発明は、タービンブレー
ドにエロージョンシールド材をろう付けする装置であっ
て、所望の位置にタービンブレードを位置決めして固定
する固定台と、前記タービンブレードのエロージョンシ
ールド部近傍に配設され、高周波電源により給電される
高周波加熱コイルと、前記タービンブレードのエロージ
ョンシールド部にろう材を挟んで配設されたエロージョ
ンシールド材を所望の締付け力で加圧して締付ける締付
け機構とを備える。
In order to solve the above problems, the present invention provides an apparatus for brazing an erosion shield material to a turbine blade, which comprises: a fixing table for positioning and fixing the turbine blade at a desired position; and an erosion shield portion of the turbine blade. a high-frequency heating coil that is disposed nearby and is powered by a high-frequency power source; and a tightening mechanism that presses and tightens an erosion shield material, which is disposed with a brazing material sandwiched between the erosion shield portion of the turbine blade, with a desired tightening force. Equipped with.

〔作用〕[Effect]

本発明は、タービンブレードを所望の位置に位置決めし
て固定台に固定すると共に、タービンブレードのエロー
ジョンシールド部にろう材を挟んで、エロージョンシー
ルド材を締付け機構により所望の締付け力で加圧して締
付け、高周波加熱によりろう付けするため、ろうが溶け
てろうの厚さが変わっても締付け力の変化が少なく、エ
ロージョンシールド材の浮上りなどのろう付け不良品が
発生せず、高周波加熱により加熱温度と加熱時間の管理
が容易に行える。
The present invention positions a turbine blade at a desired position and fixes it to a fixing base, and then clamps a brazing material between the erosion shield portion of the turbine blade and pressurizes the erosion shield material with a desired tightening force using a tightening mechanism. Since brazing is performed using high-frequency heating, there is little change in the tightening force even if the solder melts and the thickness of the solder changes, and there are no brazing defects such as floating of the erosion shield material. and heating time can be easily managed.

〔実施例〕〔Example〕

本発明のタービンブレードのエロージョンシールド材ろ
う付け装置の実施例を第1図と第2図に基づいて説明す
る。第1図は本発明のエロージョンシールド材ろう付け
装置の実施例を示す斜視図、第2図は第1図に示すター
ビンブレードのエロージョンシールド部にエロージョン
シールド材を締付けた状態を示す要部斜視図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the turbine blade erosion shield material brazing apparatus of the present invention will be described with reference to FIGS. 1 and 2. Fig. 1 is a perspective view showing an embodiment of the erosion shield material brazing device of the present invention, and Fig. 2 is a perspective view of the main part showing a state in which the erosion shield material is tightened to the erosion shield portion of the turbine blade shown in Fig. 1. It is.

これらの図において、タービンブレード1は、平板上の
固定台2に位置決めして固定されている。
In these figures, a turbine blade 1 is positioned and fixed to a fixed base 2 on a flat plate.

すなわち、固定台2上には、図上でタービンブレード1
は、このタービンブレード1の下方の所望の位置に取付
けられた図示されない支持ブロックに支持され、この固
定台2上に取付けられたL字形ブロック3a、 3bか
らなる位置決め機構4により、タービンブレード1の前
縁部1aと頭部1bとがそれぞれ当接されるようにして
位置決めされ、C形フレーム5と締付けねじ6とからな
る市販のしゃこ万力を固定台2に取付けた固定機構7に
より、前記の位置決めされたタービンブレード1を固定
台2に固定する。
That is, the turbine blade 1 is placed on the fixed base 2 in the figure.
is supported by a support block (not shown) attached to a desired position below the turbine blade 1, and is controlled by a positioning mechanism 4 consisting of L-shaped blocks 3a and 3b attached to the fixed base 2. The front edge 1a and the head 1b are positioned so that they are in contact with each other, and a fixing mechanism 7 in which a commercially available shako vise consisting of a C-shaped frame 5 and a tightening screw 6 is attached to a fixing base 2 is used to The positioned turbine blade 1 is fixed to a fixed base 2.

一方・高周波加熱コイル8は、タービンブレード1のエ
ロージョンシールド部1c近傍に・高周波加熱できる位
置に図示を省略した支持具により配設し、かつこの高周
波加熱コイル8は高周波電源装置9に接続され給電され
為ようにしておく。
On the other hand, the high-frequency heating coil 8 is disposed near the erosion shield portion 1c of the turbine blade 1 at a position where high-frequency heating can be performed using a support (not shown), and this high-frequency heating coil 8 is connected to a high-frequency power supply device 9 to supply power. Let it happen.

エロージョンシールド材20をろう材19を挟んでエロ
ージョンシールド部1cに押し付ける押付け具14は、
V形凹部10を設けた複数個のブロック11よりなり、
このブロックはピン12を介して保持具13に回転自在
に支承されている。この押付け具14は板ばね機構15
を介して、■形鋼の取付台16により取付けられたトグ
ル機構のハンドル17に連結され、これらにより締付け
機構18が構成されている。
The pressing tool 14 that presses the erosion shield material 20 against the erosion shield portion 1c with the brazing material 19 in between is
Consisting of a plurality of blocks 11 provided with a V-shaped recess 10,
This block is rotatably supported by a holder 13 via a pin 12. This pressing tool 14 is a leaf spring mechanism 15
It is connected to a handle 17 of a toggle mechanism mounted by a mount 16 made of section steel, and these constitute a tightening mechanism 18.

前記説明のように、位置決め固定され、高周波加熱コイ
ル8が配設されたタービンブレード1は、エロージョン
シールド部1cにろう材19を挟んでエロージョンシー
ルド材20を配設し、押付け具14の複数個のブロック
11のV形凹部lOを当接させ、ハンドル17を操作し
、板ばね機構15を介して押付け具14を加圧し、これ
らにより構成された締付け機構18により、タービンブ
レード1に対してエロージョンシールド材20を締付け
る。
As described above, the turbine blade 1, which is fixed in position and has the high-frequency heating coil 8 disposed thereon, has the erosion shield material 20 disposed in the erosion shield portion 1c with the brazing filler metal 19 in between, and the plurality of pressing tools 14. The V-shaped recess lO of the block 11 is brought into contact with the block 11, the handle 17 is operated, the pressing tool 14 is pressurized via the leaf spring mechanism 15, and the tightening mechanism 18 constituted by these is used to prevent erosion against the turbine blade 1. Tighten the shield material 20.

高周波加熱コイル8は、高周波電源袋W9から給電され
て、このエロージョンシールド部1c近傍を高周波加熱
し、これによりろう19が溶かされ、エロージョンシー
ルド材20は板ばね機構15を介しているため移動する
ことなく締付け機構18により締付けが継続され、高周
波加熱コイル8は給電が停止され、冷却されたろう19
が固化し、エロージョンシールド材20の接着が終わる
The high-frequency heating coil 8 is supplied with power from the high-frequency power supply bag W9 and performs high-frequency heating near the erosion shield portion 1c, thereby melting the wax 19 and moving the erosion shield material 20 via the leaf spring mechanism 15. The tightening mechanism 18 continues to tighten without any problem, the power supply to the high frequency heating coil 8 is stopped, and the cooled wax 19
is solidified, and the adhesion of the erosion shield material 20 is completed.

なお、前記押付け具14のブロック11は、ビン12を
回転中心として自在に回転でき、V形凹部10があらゆ
る曲率面に当接でき、さらに板ばね機構15を介して加
圧されるため、曲率面の異なる多数品種のエロージョン
シールド材20の外周面を、均一の締付け力で締付ける
ことができる。
The block 11 of the pressing tool 14 can freely rotate around the bottle 12, and the V-shaped recess 10 can come into contact with any surface of curvature. The outer peripheral surfaces of many types of erosion shield materials 20 having different surfaces can be tightened with uniform tightening force.

本発明のタービンブレードのエロージョンシールド材ろ
う付け装置によれば、タービンブレードのエロージョン
シールド部にエロージョンシールド材を正確に容易にろ
う付けすることができる。
According to the turbine blade erosion shield material brazing apparatus of the present invention, it is possible to accurately and easily braze the erosion shield material to the erosion shield portion of the turbine blade.

〔発明の効果〕〔Effect of the invention〕

本発明は、固定台上にタービンブレードを位置決めして
固定すると共に、エロージョンシールド部近傍に高周波
加熱コイルを配設し、このエロージョンシールド部にろ
う材を挟んでエロージョンシールド材を締付け機構によ
り締付け、高周波加熱コイルに通電してろうを溶かした
後通電を停止し、冷却して高周波加熱によりろう付けを
行うため、従来技術のように多数の熟練作業者を必要と
せず、熟練した作業者でなくても、容易に同一品質のろ
う付け作業が迅速に行え、しかも寸法形状ノ異なる多数
品種のタービンブレードのエローシコンシールド材ろう
付けに対応できる。
The present invention positions and fixes a turbine blade on a fixing table, and also arranges a high-frequency heating coil near an erosion shield part, sandwiches a brazing material between the erosion shield part, and tightens the erosion shield material by a tightening mechanism. Since the high-frequency heating coil is energized to melt the wax, the energization is stopped, and the brazing is performed by cooling and high-frequency heating, there is no need for a large number of skilled workers as in the conventional technology. This method enables brazing work to be performed easily and quickly with the same quality even when the machine is in use, and can also be used to braze Erosicon shield materials for many types of turbine blades with different sizes and shapes.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明のエロージョンシールド材ろう付け装置
の実施例を示す斜視図、第2図は第1図に示すタービン
ブレードのエロージョンシールド部にエロージョンシー
ルド材を締付けた状態を示す要部斜視図である。 1:タービンブレード、1a:前縁部、1b:頭部、1
c:エロージョンシールド部、2:固定台、4:位置決
め機構、7:固定機構、8:高周波加熱コイル、14;
押付け具、15:板ばね機構、18:締付け機構、19
:ろう、20:エロージョンシールド材。
Fig. 1 is a perspective view showing an embodiment of the erosion shield material brazing device of the present invention, and Fig. 2 is a perspective view of the main part showing a state in which the erosion shield material is tightened to the erosion shield portion of the turbine blade shown in Fig. 1. It is. 1: Turbine blade, 1a: Front edge, 1b: Head, 1
c: erosion shield part, 2: fixing base, 4: positioning mechanism, 7: fixing mechanism, 8: high frequency heating coil, 14;
Pressing tool, 15: Leaf spring mechanism, 18: Tightening mechanism, 19
: Wax, 20: Erosion shield material.

Claims (1)

【特許請求の範囲】[Claims] 1)タービンブレードにエロージョンシールド材をろう
付けする装置であって、所望の位置にタービンブレード
を位置決めして固定する固定台と、前記タービンブレー
ドのエロージョンシールド部近傍に配設され、高周波電
源により給電される高周波加熱コイルと、前記タービン
ブレードのエロージョンシールド部にろう材を挟んで配
設されたエロージョンシールド材を所望の締付け力で加
圧して締付ける締付け機構とを備えることを特徴とする
タービンブレードのエロージョンシールド材ろう付け装
置。
1) A device for brazing an erosion shield material to a turbine blade, which includes a fixing table for positioning and fixing the turbine blade at a desired position, and a fixing table disposed near the erosion shield portion of the turbine blade and powered by a high-frequency power source. and a tightening mechanism that pressurizes and tightens an erosion shield material disposed in the erosion shield portion of the turbine blade with a brazing material sandwiched therebetween, with a desired tightening force. Erosion shield material brazing equipment.
JP1331508A 1989-12-21 1989-12-21 Turbine blade erosion shield brazing equipment Expired - Lifetime JP2671531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1331508A JP2671531B2 (en) 1989-12-21 1989-12-21 Turbine blade erosion shield brazing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1331508A JP2671531B2 (en) 1989-12-21 1989-12-21 Turbine blade erosion shield brazing equipment

Publications (2)

Publication Number Publication Date
JPH03194102A true JPH03194102A (en) 1991-08-23
JP2671531B2 JP2671531B2 (en) 1997-10-29

Family

ID=18244428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1331508A Expired - Lifetime JP2671531B2 (en) 1989-12-21 1989-12-21 Turbine blade erosion shield brazing equipment

Country Status (1)

Country Link
JP (1) JP2671531B2 (en)

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EP1884312A1 (en) * 2006-08-04 2008-02-06 Ansaldo Energia S.P.A. A device for blocking a blade of a turbine and a method for blade machining using said blocking device
ITTO20080552A1 (en) * 2008-07-17 2010-01-18 Ansaldo Energia Spa BLOCK LOCKING OF A VINE, IN PARTICULAR TO HOLD A TURBINE PALLET
WO2013026984A1 (en) * 2011-08-24 2013-02-28 Snecma Tool for holding a turbine-engine part, including a means for attaching and immobilising the part and an element to be attached to said part by brazing or welding
CN110640507A (en) * 2019-11-07 2020-01-03 河海大学常州校区 Blade positioning device

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US8128078B2 (en) 2005-03-09 2012-03-06 Ihi Corporation Jig
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EP1884312A1 (en) * 2006-08-04 2008-02-06 Ansaldo Energia S.P.A. A device for blocking a blade of a turbine and a method for blade machining using said blocking device
ITTO20080552A1 (en) * 2008-07-17 2010-01-18 Ansaldo Energia Spa BLOCK LOCKING OF A VINE, IN PARTICULAR TO HOLD A TURBINE PALLET
EP2145734A1 (en) * 2008-07-17 2010-01-20 Ansaldo Energia S.P.A. Vice for withholding a turbine blade
WO2013026984A1 (en) * 2011-08-24 2013-02-28 Snecma Tool for holding a turbine-engine part, including a means for attaching and immobilising the part and an element to be attached to said part by brazing or welding
FR2979272A1 (en) * 2011-08-24 2013-03-01 Snecma TOOLING TURBOMACHINE PIECE
CN103747915A (en) * 2011-08-24 2014-04-23 斯奈克玛 Tool for holding a turbine-engine part, including a means for attaching and immobilising the part and an element to be attached to said part by brazing or welding
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CN110640507A (en) * 2019-11-07 2020-01-03 河海大学常州校区 Blade positioning device

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