JP2003001402A - Wear-resistant member repairing method, repairing device used for repairing wear-resistant member, and steam valve - Google Patents
Wear-resistant member repairing method, repairing device used for repairing wear-resistant member, and steam valveInfo
- Publication number
- JP2003001402A JP2003001402A JP2001188376A JP2001188376A JP2003001402A JP 2003001402 A JP2003001402 A JP 2003001402A JP 2001188376 A JP2001188376 A JP 2001188376A JP 2001188376 A JP2001188376 A JP 2001188376A JP 2003001402 A JP2003001402 A JP 2003001402A
- Authority
- JP
- Japan
- Prior art keywords
- repairing
- repair
- wear
- valve
- wear resistant
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、弁の摩耗や弁の欠
陥部分に効果的な補修を施工し、高品質に維持させる耐
摩耗部材の補修方法、耐摩耗部材の補修に用いる補修装
置および蒸気弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing a wear resistant member for effectively repairing wear of a valve or a defective portion of a valve to maintain high quality, a repair device used for repairing the wear resistant member, and Regarding steam valves.
【０００２】[0002]
【従来の技術】例えば、火力発電プラントや原子力発電
プラントに使用される電動弁は、図８に示すように、弁
ケーシング１１０に収容させた弁体１１１に、弁棒１１
２を介装して、ハンドル１１３およびモータ１１４を接
続させ、ハンドル１１３またはモータ１１４の駆動力で
弁棒１１２を弁摺動部１１６に沿って進退させ、弁座１
１５に対し、弁体１１１を接離自在に操作できる構成に
なっている。2. Description of the Related Art For example, as shown in FIG. 8, an electrically operated valve used in a thermal power plant or a nuclear power plant has a valve body 111 housed in a valve casing 110 and a valve rod 11.
2, the handle 113 and the motor 114 are connected to each other, and the valve rod 112 is advanced and retracted along the valve sliding portion 116 by the driving force of the handle 113 or the motor 114.
The valve element 111 can be operated so that it can be moved toward and away from the valve element 15.
【０００３】また、電動弁は、弁座１１５に耐摩耗部材
を用いて溶接による肉盛り施工を行っており、弁座１１
５に耐摩耗部材の肉盛り施工を行うことにより、閉弁
時、弁体１１１を弁座１１５に水密的に当接させ、シー
ル効果を高めている。In addition, the motor-operated valve has a valve seat 115 which is made of a wear-resistant member and welded to build up the valve seat 11.
By overlaying the wear-resistant member on No. 5, when the valve is closed, the valve element 111 is brought into watertight contact with the valve seat 115 to enhance the sealing effect.
【０００４】このように、シール効果を高めるために弁
座１１５に耐摩耗部材を用いて肉盛り施工していても、
電動弁は、長年の使用の結果、肉盛り施工部分に摩耗が
発生したり、あるいは、何らかの事情で割れが発生する
ことがあった。In this way, even if the valve seat 115 is built up by using a wear resistant member to enhance the sealing effect,
As a result of many years of use, the motor-operated valve may have been worn in the build-up portion or cracked for some reason.
【０００５】肉盛り施工部分に摩耗や割れが発生した場
合、その不具合部分に当初の耐摩耗部材と同質材を用い
て補修施工し、弁体１１１と弁座１１５との水密性を再
び維持させていた。When wear or cracks occur in the build-up portion, repairing is performed on the defective portion by using the same material as the original wear resistant member, and the watertightness between the valve body 111 and the valve seat 115 is maintained again. Was there.
【０００６】[0006]
【発明が解決しようとする課題】肉盛り施工部分に摩耗
や割れ等が発生した場合、その不具合部分に補修を行っ
ても長く維持することができず、再び割れ等が発生する
ことがあった。この割れは、当初の肉盛り施工時、元の
基材に部分的な溶融部分が生じるため、非溶融部分との
境界面に残留応力が残ることが要因になっていると考え
られる。When abrasion or cracks occur in the build-up construction portion, even if the defective portion cannot be maintained for a long time, the cracks may occur again. . It is considered that this crack is caused by residual stress remaining on the boundary surface with the non-melted portion because a partially melted portion is generated in the original base material at the time of initial overlaying.
【０００７】また、肉盛り施工部分の補修に際し、全面
補修した場合、残留応力が局部的に残らないものの、一
旦肉盛り施工部分を機械加工により除去した後、再び肉
盛り施工をしなければならず、限られた作業空間内で、
きわめて多くの労力を費やすなどの不具合があった。Further, when repairing the build-up portion, if the entire surface is repaired, residual stress does not remain locally, but the build-up portion must be removed by machining and then the build-up construction must be performed again. No, in a limited work space,
There were problems such as spending a great deal of effort.
【０００８】さらに、補修に際し、基材をほとんど溶融
させない拡散ろう付け施工も考えられるが、大型部品は
取外し困難なため補修が困難であった。Further, at the time of repair, diffusion brazing may be considered in which the base material is hardly melted, but it is difficult to repair large parts because it is difficult to remove.
【０００９】大型部品の耐摩耗部品を部分的に補修する
方法が特開平１１−１２３６１７号公報に開示されてい
る。しかし、この補修方法では、大気中で加熱するため
のフラックスを用いても酸化が防止しきれず、フラック
スの残渣が多量に残る問題があった。A method for partially repairing wear resistant parts of large parts is disclosed in Japanese Patent Laid-Open No. 11-123617. However, this repair method has a problem that even if a flux for heating in the atmosphere is used, the oxidation cannot be prevented and a large amount of flux residue remains.
【００１０】本発明は、このような事情を考慮してなさ
れたもので、摩耗や割れ等の欠陥に対して補修を施工す
る場合、補修を効果的に施工し、監視し、高い品質を維
持させる耐摩耗部材の補修方法、耐摩耗部材の補修に用
いる補修装置および蒸気弁を提供することを目的とす
る。The present invention has been made in consideration of such circumstances, and when repairing defects such as wear and cracks, the repair is effectively performed, monitored, and high quality is maintained. An object of the present invention is to provide a method of repairing a wear resistant member, a repair device used for repairing the wear resistant member, and a steam valve.
【００１１】[0011]
【課題を解決するための手段】本発明に係る耐摩耗部材
の補修方法は、請求項１に記載したように、基材に被着
させる耐摩耗部に欠陥が発生した際、前記耐摩耗部に補
修材を被着させて補修部分を局部的に不活性なガス雰囲
気および真空中のうちいずれか一方に維持させながら前
記補修材を前記欠陥に溶け込ませることを特徴とする耐
摩耗部材の補修方法である。According to the method of repairing a wear resistant member according to the present invention, as described in claim 1, when a defect occurs in a wear resistant portion to be adhered to a base material, the wear resistant portion is Repairing a wear-resistant member, characterized in that the repairing material is melted into the defects while the repairing part is locally maintained in either one of an inert gas atmosphere and a vacuum in the repairing part. Is the way.
【００１２】また、本発明に係る耐摩耗部材の補修方法
は、請求項２に記載したように、基材に被着させる耐摩
耗部に欠陥が発生した際、前記耐摩耗部に基材より融点
の低い金属材料と金属材料より融点が高い少なくとも１
種類の金属材料粉末および少なくとも１種類のセラミッ
クス粉末からなる補修材を被着させて、金属材料より高
い温度で金属材料あるいはセラミックスあるいは基材の
いずれかより低い温度に加熱して補修部分を局部的に不
活性なガス雰囲気および真空中のうち、いずれか一方に
維持させながら、前記補修材を前記欠陥に溶け込ませる
方法である。Further, according to a second aspect of the present invention, there is provided a method for repairing a wear resistant member, wherein when a defect occurs in the wear resistant portion to be adhered to the base material, the wear resistant portion is removed from the base material by the base material. Metal material having a low melting point and at least 1 having a higher melting point than the metal material
A repair material composed of one kind of metal material powder and at least one kind of ceramic powder is applied, and the repaired portion is locally heated by heating it to a temperature lower than that of the metal material, ceramics or base material at a temperature higher than that of the metal material. It is a method of causing the repair material to melt into the defects while maintaining either one of an inert gas atmosphere and a vacuum.
【００１３】また、本発明に係る耐摩耗部材の補修方法
は、請求項３に記載したように、基材に被着させる耐摩
耗部に欠陥が発生した際、前記耐摩耗部の欠陥部に凹部
を形成し、凹部に補修材を被着させて加熱し、補修部分
を局部的に不活性ガス雰囲気および真空中のうちいずれ
か一方に維持させながら前記補修材を前記欠陥に溶け込
ませる方法である。Further, according to the method of repairing a wear resistant member according to the present invention, as described in claim 3, when a defect occurs in the wear resistant portion to be adhered to the base material, the defect resistant portion of the wear resistant portion is removed. By forming a concave portion, applying a repair material to the concave portion and heating it, and by melting the repair material into the defect while locally maintaining either one of the inert gas atmosphere and the vacuum in the repair portion. is there.
【００１４】また、本発明に係る耐摩耗部材の補修に用
いる補修装置は、請求項４に記載したように、前記耐摩
耗部の補修部に熱を加える加熱装置と前記補修部を真空
雰囲気に保つ真空容器および真空排気装置を備えたもの
である。Further, the repairing device used for repairing the wear resistant member according to the present invention is, as described in claim 4, a heating device for applying heat to the repair part of the wear resistant part and the repair part in a vacuum atmosphere. It is provided with a vacuum container for keeping and a vacuum exhaust device.
【００１５】また、本発明に係る耐摩耗部材の補修に用
いる補修装置は、請求項５に記載したように、前記耐摩
耗部の補修部に熱を加える加熱装置と前記補修部を不活
性なガス雰囲気に保つ隔離容器および不活性ガス供給ノ
ズルを備えたものである。Further, the repair device used for repairing the wear resistant member according to the present invention is, as described in claim 5, a heating device for applying heat to the repair part of the wear resistant part and the repair part are inactive. It is provided with an isolation container for keeping a gas atmosphere and an inert gas supply nozzle.
【００１６】また、本発明に係る耐摩耗部材の補修方法
は、請求項６に記載したように、弁の耐摩耗部の欠陥を
補修する際、前記弁の欠陥に熱を加える加熱装置と、前
記弁の欠陥部を不活性なガス雰囲気あるいは真空雰囲気
に維持させる装置と、前記加熱温度を制御する装置を必
要に応じて弁内筒壁に設けた支えジグで支持させた方法
である。Further, in the method for repairing the wear resistant member according to the present invention, as described in claim 6, when repairing a defect in the wear resistant portion of the valve, a heating device for applying heat to the defect in the valve, This is a method in which a device for maintaining the defective portion of the valve in an inert gas atmosphere or a vacuum atmosphere and a device for controlling the heating temperature are supported by a supporting jig provided on the inner wall of the valve as needed.
【００１７】また、本発明に係る耐摩耗部材の補修方法
は、請求項７に記載したように、弁の耐摩耗部の欠陥を
補修する際、前記弁の欠陥に熱を加える加熱装置と、前
記弁の欠陥部を不活性なガス雰囲気あるいは真空雰囲気
に維持させる装置と、前記加熱温度を制御する装置を必
要に応じて進退移動させる移動機構部と、前記弁の欠陥
を補修するときの補修部分の温度や補修状況を監視する
装置を用いて補修する方法である。Further, the wear-resistant member repairing method according to the present invention comprises, as described in claim 7, a heating device for applying heat to the defect of the valve when repairing the defect of the wear-resistant portion of the valve, A device for maintaining the defective part of the valve in an inert gas atmosphere or a vacuum atmosphere, a moving mechanism part for moving the device for controlling the heating temperature forward and backward as necessary, and a repair for repairing the defect of the valve This is a method of repairing using a device that monitors the temperature and repair status of the part.
【００１８】また、本発明に係る蒸気弁は、請求項８に
記載したように、弁の耐摩耗部の欠陥を補修する際、請
求項１〜７記載の補修方法および補修装置を用いて補修
するものである。Further, in the steam valve according to the present invention, when repairing a defect of the wear resistant portion of the valve as described in claim 8, repair is performed by using the repair method and the repair device according to claims 1 to 7. To do.
【００１９】[0019]
【発明の実施の形態】以下、本発明に係わる耐摩耗部材
の補修方法、耐摩耗部材の補修に用いる補修装置および
その補修装置を用い補修された蒸気弁の実施形態を図面
および図面に付した符号を引用して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a method for repairing a wear resistant member, a repair device used for repairing a wear resistant member, and a steam valve repaired using the repair device according to the present invention will be described below with reference to the drawings and the drawings. Description will be given by citing the reference numerals.
【００２０】図１は、本発明に係る耐摩耗部材の補修方
法の第１実施形態を説明するために用いた手順概念図で
ある。これらの手順は、不活性ガス雰囲気中あるいは真
空中で施工される。FIG. 1 is a conceptual diagram of a procedure used for explaining a first embodiment of a method for repairing a wear resistant member according to the present invention. These procedures are performed in an inert gas atmosphere or vacuum.
【００２１】なお、図１中、（ａ）は、基材１に耐摩耗
部２を被着し、耐摩耗部２に模擬的欠陥部３を形成した
テスト材を示す概念図、（ｂ）は、欠陥部３を備えた耐
摩耗部２に補修材４を被着した概念図、（ｃ）は、補修
材４を被着した耐摩耗部２を加熱し、欠陥部３に補修材
４を溶け込ませたことを示す概念図である。In FIG. 1, (a) is a conceptual diagram showing a test material in which a wear resistant portion 2 is adhered to a base material 1 and a simulated defect portion 3 is formed in the wear resistant portion 2, (b). Is a conceptual diagram in which the repair material 4 is adhered to the wear resistant portion 2 having the defect portion 3, and (c) shows the wear resistant portion 2 in which the repair material 4 is applied to heat the repair material 4 to the defect portion 3. It is a conceptual diagram which shows having melted.
【００２２】本実施形態に係る耐摩耗部材の補修方法
は、図１の（ａ）〜（ｃ）に示すように、基材１に被着
させた耐摩耗部２に欠陥部３が発生した場合、耐摩耗部
２に補修材４を被着させ、補修材４を被着させた耐摩耗
部２を加熱して補修材４を欠陥部３に溶け込ませる構成
になっている。In the method for repairing the wear resistant member according to the present embodiment, as shown in FIGS. 1 (a) to 1 (c), a defect portion 3 is generated in the wear resistant portion 2 adhered to the base material 1. In this case, the repair material 4 is applied to the wear resistant portion 2, and the wear resistant portion 2 to which the repair material 4 is applied is heated to melt the repair material 4 into the defective portion 3.
【００２３】本実施形態に係る耐摩耗部材の補修方法
を、今少し具体的に説明する。The method of repairing the wear resistant member according to this embodiment will now be described in more detail.
【００２４】本実施形態に用いられる基材１は、Ｃｒ−
Ｍｏ鋼である。このＣｒ−Ｍｏ鋼製の基材１には、プラ
ズマアーク溶接により肉盛り施工した１．５ｗｔ％Ｃ、
１ｗｔ％Ｍｎ、２８ｗｔ％Ｃｒ、０．５ｗｔ％Ｍｏ、４
ｗｔ％Ｗ、残部Ｃｏで組成した耐摩耗部２が被着され
る。The base material 1 used in this embodiment is Cr-
It is Mo steel. This Cr-Mo steel base material 1 is coated with 1.5 wt% C by plasma arc welding,
1 wt% Mn, 28 wt% Cr, 0.5 wt% Mo, 4
The wear resistant portion 2 composed of wt% W and the balance Co is deposited.
【００２５】また、耐摩耗部２には、模擬的に幅０．１
ｍｍおよび０．２ｍｍ、深さ１ｍｍおよび２ｍｍの欠陥
部３が設けられる。The wear resistant portion 2 has a width of 0.1 as a simulation.
Defects 3 with a depth of 1 mm and 2 mm and a depth of 1 mm and 2 mm are provided.
【００２６】このような構成を備えたテスト材に、本実
施形態に係る耐摩耗部材の補修方法を行った。The test material having such a structure was subjected to the method for repairing the wear resistant member according to the present embodiment.
【００２７】まず、補修材４が選定される。この補修材
４は、表１に示すろう材リストから選択される。First, the repair material 4 is selected. The repair material 4 is selected from the brazing material list shown in Table 1.
【００２８】[0028]
【表１】 [Table 1]
【００２９】補修材４は、ろう材のみの場合、ろう材お
よび耐摩耗部材との混合のいずれかが選択される。When only the brazing material is used as the repair material 4, one of a mixture of the brazing material and the wear resistant member is selected.
【００３０】また、ろう材と耐摩耗部材との混合比率
は、ろう材の流れを重視する場合、例えば、ろう材：耐
摩耗部材＝１：（０．１〜１）程度にし、また、耐摩耗
性を高めたい場合、例えばろう材：耐摩耗部材＝１：
（１〜１０）にすることが望ましい。When the flow of the brazing material is important, the mixing ratio of the brazing material and the wear resistant member is, for example, about brazing material: wear resistant member = 1: (0.1 to 1), and When it is desired to improve wear resistance, for example, brazing material: wear resistant member = 1:
It is desirable to set (1-10).
【００３１】また、ろう材および耐摩耗部材は、粒状、
箔状、板状あるいはワイヤー状、複合化、クラッド化に
より一体化したものがあるが、これらの形状の中からい
ずれかが選択される。The brazing material and the wear resistant member are granular,
There are foil-shaped, plate-shaped or wire-shaped, and composites made by compounding and cladding, and any one of these shapes is selected.
【００３２】補修材４は、パレットを用いて、図１
（ｂ）に示すように、耐摩耗部材９に約１ｍｍの厚さで
コーティングした後、溶剤を大気中で乾燥させ固化し
た。あるいは、ワイヤー状、板状、箔状の補修材を補修
部に固着した。The repair material 4 is a pallet as shown in FIG.
As shown in (b), the wear-resistant member 9 was coated to a thickness of about 1 mm, and then the solvent was dried in the atmosphere and solidified. Alternatively, a wire-shaped, plate-shaped, or foil-shaped repair material is fixed to the repair portion.
【００３３】補修部を不活性雰囲気にしたのち、ろう材
の融点よりも約５０℃〜１００℃を上廻る温度まで赤外
線集光ヒータまたは高周波加熱ヒータを用いて補修材４
を加熱した。After the repaired part is made an inert atmosphere, the repairing material 4 is heated to a temperature of about 50 ° C. to 100 ° C. higher than the melting point of the brazing material using an infrared focusing heater or a high frequency heating heater.
Was heated.
【００３４】補修テスト材の欠陥部３の断面を切断し、
研磨して光学顕微鏡で観察したところ、いずれも欠陥部
３にろう材が十分に溶け込んでいることが認められた。
不活性雰囲気中で加熱したため、補修部での酸化物の生
成や変色も認められなかった。The cross section of the defective portion 3 of the repair test material is cut,
As a result of polishing and observing with an optical microscope, it was confirmed that the brazing material was sufficiently melted in the defect portion 3 in all cases.
Since heating was performed in an inert atmosphere, neither oxide formation nor discoloration was observed in the repaired part.
【００３５】このように、本実施形態は、基材１に被着
させた耐摩耗部２に欠陥部３が発生した場合、耐摩耗部
２に補修材４を被着させ、補修材４を被着させた耐摩耗
部材を加熱して欠陥部３に補修材４を十分に溶け込ませ
て高い品質を維持させることができる。As described above, in this embodiment, when the defective portion 3 is generated in the abrasion resistant portion 2 adhered to the base material 1, the repair material 4 is adhered to the abrasion resistant portion 2 and the repair material 4 is attached. It is possible to heat the adhered wear resistant member to sufficiently melt the repair material 4 into the defective portion 3 and maintain high quality.
【００３６】また、本実施形態では、耐摩耗部２の欠陥
部３を補修する際、欠陥部３に不活性ガス雰囲気中で補
修材４を加熱して補修材４や基材１を酸化することなく
溶け込ませる簡素な工程を採っているので、また従来に
較べて施工作業時間をより一層短くさせることができ
る。Further, in the present embodiment, when repairing the defective portion 3 of the wear resistant portion 2, the repair material 4 is heated in the inert gas atmosphere to oxidize the repair material 4 and the base material 1. Since it adopts a simple process of melting without the need, it is possible to further shorten the construction work time compared to the conventional method.
【００３７】その他の補修方法として、基材１にステン
レス鋼や炭素鋼を用いた場合も同様の効果が得られた。
また、ろう材として表１に示したものを用いた補修材４
でも同様の効果が得られた。As another repairing method, the same effect was obtained when stainless steel or carbon steel was used as the base material 1.
Repair material 4 using the brazing material shown in Table 1
However, the same effect was obtained.
【００３８】図２は、本発明に係る耐摩耗部材の補修方
法の第２実施形態を説明するために用いた手順概念図で
ある。FIG. 2 is a conceptual diagram of the procedure used for explaining the second embodiment of the method for repairing a wear resistant member according to the present invention.
【００３９】なお、図２中、（ａ）は基材１に耐摩耗部
２を被着し、耐摩耗部２に模擬的に欠陥部３を形成した
テスト材を示す概念図、（ｂ）は、欠陥部３を備えた耐
摩耗部２に補修材として表１に示した材料と耐摩耗材料
粉末の混合物を被着させた概念図、（ｃ）は、補修材４
を被着させた耐摩耗部２を加熱し、欠陥部３に補修材４
を溶け込ませたことを示す概念図である。In FIG. 2, (a) is a conceptual diagram showing a test material in which the abrasion resistant portion 2 is adhered to the base material 1 and the defective portion 3 is simulatedly formed on the abrasion resistant portion 2, (b). Is a conceptual diagram in which the mixture of the material shown in Table 1 and the wear resistant material powder is applied as a repair material to the wear resistant portion 2 having the defective portion 3, and (c) is the repair material 4
The wear-resistant portion 2 to which is adhered is heated, and the defective portion 3 is repaired with the repair material 4
It is a conceptual diagram which shows having melted.
【００４０】本実施形態に用いる補修材４は、図２
（ｃ）で示すろう材７および耐摩耗部材８である。ろう
材７と耐摩耗部材８の形状は、粉末、板、箔の混合ある
いは積層・クラッドの中から選択した。The repair material 4 used in this embodiment is shown in FIG.
The brazing material 7 and the wear resistant member 8 shown in (c). The shapes of the brazing material 7 and the wear-resistant member 8 were selected from powder, a mixture of plates and foils, or lamination / cladding.
【００４１】以下に、本実施形態に係る耐摩耗部材の補
修方法を説明する。The method of repairing the wear resistant member according to this embodiment will be described below.
【００４２】本実施形態に用いられる基材１は、ステン
レス鋼である。このステンレス鋼製の基材１には、ＴＩ
Ｇ溶接により肉盛り施工した０．２５ｗｔ％Ｃ、２．５
ｗｔ％Ｎｉ、２７ｗｔ％Ｃｒ、２ｗｔ％Ｆｅ、５ｗｔ％
Ｍｏ、残部Ｃｏで組成した耐摩耗部２が被着される。The substrate 1 used in this embodiment is stainless steel. This stainless steel substrate 1 has TI
0.25wt% C, 2.5 built up by G welding
wt% Ni, 27 wt% Cr, 2 wt% Fe, 5 wt%
The wear resistant portion 2 composed of Mo and the balance Co is deposited.
【００４３】また、耐摩耗部２には、模擬的に幅０．２
ｍｍおよび０．５ｍｍ、深さ２ｍｍおよび３ｍｍの欠陥
部３が設けられる。The wear resistant portion 2 has a width of 0.2 as a simulation.
Defects 3 of mm and 0.5 mm and depths of 2 mm and 3 mm are provided.
【００４４】このような構成を備えたテスト材に、本実
施形態に係る耐摩耗部材の補修方法を行った。The test material having such a structure was subjected to the method of repairing the wear resistant member according to the present embodiment.
【００４５】まず、補修材４が選択される。この補修材
４は、表１に示すろう材リストから選択した。耐摩耗部
材８としては、耐摩耗部と同材でもよく、あるいは、他
のＣｏ基あるいはＮｉ基合金から適宜選択してもよい。
その後、補修部を不活性雰囲気にしたのち、ろう材７の
融点よりも約５０℃〜１００℃を上廻る温度まで赤外線
集光ヒータまたは高周波加熱ヒータ等を用いて補修材４
を加熱する。First, the repair material 4 is selected. The repair material 4 was selected from the brazing material list shown in Table 1. The wear resistant member 8 may be made of the same material as the wear resistant portion, or may be appropriately selected from other Co-based or Ni-based alloys.
After that, after making the repairing part into an inert atmosphere, the repairing material 4 is heated to a temperature of about 50 ° C. to 100 ° C. higher than the melting point of the brazing material 7 by using an infrared condenser heater or a high frequency heating heater.
To heat.
【００４６】その際、ろう材７は、酸化することなく溶
融し、耐摩耗部２に濡れ広がることが認められた。At that time, it was confirmed that the brazing material 7 was melted without being oxidized and spreads wet on the wear resistant portion 2.
【００４７】その後、補修材４の表面を研磨紙、やすり
等を用いて粗面化処理を行い、その表面を粗さ（Ｒａ：
２〜３０μｍ、Ｒｍａｘ：１０〜２００μｍ）程度にし
た後、大気中プラズマ溶射法または、高速ガス炎溶射法
などのいずれかで、図２の（ｄ）に示すように、厚さ約
０．５ｍｍにして新たな第１耐摩耗部５を補修材４に被
着させた。新たな第１耐摩耗部５は、０．２５ｗｔ％
Ｃ、２．５ｗｔ％Ｎｉ、２７ｗｔ％Ｃｒ、２ｗｔ％Ｆ
ｅ、５ｗｔ％Ｍｏ、残部Ｃｏとした。さらに、溶射条件
は、電圧：６５Ｖ、電流：６００Ａ、アルゴン−水素ガ
ス：９５ｌ／分とした。その後、新たな第２耐摩耗部６
をＴＩＧ溶接により被着した。ＴＩＧ溶接により被着し
た新たな第２耐摩耗部６は、０．２５ｗｔ％Ｃ、２．５
ｗｔ％Ｎｉ、２７ｗｔ％Ｃｒ、２ｗｔ％Ｆｅ、５ｗｔ％
Ｍｏ、残部Ｃｏとした。溶接条件は、平均電流１１０
Ａ、電圧１０〜１５Ｖ、送り速度は、８０〜１５０ｍｍ
／分である。After that, the surface of the repair material 4 is subjected to a surface roughening treatment using abrasive paper, a file or the like, and the surface is roughened (Ra:
2 to 30 μm, Rmax: 10 to 200 μm), and then a thickness of about 0.5 mm as shown in (d) of FIG. 2 by either an atmospheric plasma spraying method or a high-speed gas flame spraying method. Then, a new first wear resistant portion 5 was applied to the repair material 4. The new first wear resistant portion 5 is 0.25 wt%
C, 2.5 wt% Ni, 27 wt% Cr, 2 wt% F
e, 5 wt% Mo, and the balance Co. Further, the spraying conditions were as follows: voltage: 65 V, current: 600 A, argon-hydrogen gas: 95 l / min. After that, a new second wear resistant portion 6
Was applied by TIG welding. The new second wear resistant portion 6 deposited by TIG welding is 0.25 wt% C, 2.5
wt% Ni, 27 wt% Cr, 2 wt% Fe, 5 wt%
Mo and balance Co were used. Welding conditions are average current 110
A, voltage 10 to 15 V, feed speed 80 to 150 mm
/ Min.
【００４８】補修材４に新たな第１耐摩耗部５および第
２耐摩耗部６を被着させた後、再び、テスト材の欠陥部
３の断面を切断し、研磨して光学顕微鏡で観察したとこ
ろ、上述と同様に、いずれも欠陥部３もろう材７が十分
に溶け込んでいることが認められた。また、新たな第１
耐摩耗部材５も補修材４に良好に被着していることが認
められた。After the new first wear-resistant portion 5 and the second wear-resistant portion 6 were attached to the repair material 4, the cross section of the defective portion 3 of the test material was cut again, polished and observed with an optical microscope. As a result, similarly to the above, it was confirmed that the brazing filler metal 7 was sufficiently melted in each of the defective portions 3. Also, the new first
It was confirmed that the wear resistant member 5 also adhered well to the repair material 4.
【００４９】このように、本実施形態は、基材１に被着
させた耐摩耗部２に欠陥部３が発生した場合、耐摩耗部
２に補修材４を被着させ、補修材４を被着させた耐摩耗
部２を加熱して補修材４を欠陥部３に溶け込ませた後、
耐摩耗部２の表面に再び新たな第１耐摩耗部材５および
第２耐摩耗部材６のうち、少なくとも一方を被着させる
ので、欠陥部３に補修材４を十分に溶け込ませて高い品
質を維持させることができる。特に、欠陥の幅が大きい
場合、ろう材７のみでは充填し難い場合も、耐摩耗部材
８の粉末がろう材７と同時に溶融することなく補修材４
に固体状態で残留するため、それらがろう材７の液相を
保持する役目を果たし、広い欠陥部３にも補修材４が凝
固引けすることなく留まるものと考えられる。As described above, in this embodiment, when the defective portion 3 is generated in the abrasion resistant portion 2 adhered to the base material 1, the repair material 4 is adhered to the abrasion resistant portion 2 and the repair material 4 is attached. After heating the adhered wear resistant portion 2 to melt the repair material 4 into the defective portion 3,
Since at least one of the new first wear-resistant member 5 and the second wear-resistant member 6 is again adhered to the surface of the wear-resistant portion 2, the repair material 4 is sufficiently melted in the defective portion 3 to obtain high quality. Can be maintained. In particular, when the width of the defect is large, even if it is difficult to fill the brazing filler metal 7 alone, the powder of the wear resistant member 8 does not melt at the same time as the brazing filler metal 7 and the repair material 4
Since they remain in the solid state, they serve to hold the liquid phase of the brazing filler metal 7, and it is considered that the repairing material 4 remains in the wide defect portion 3 without solidifying and shrinking.
【００５０】図３は、本発明に係る耐摩耗部材の補修方
法の第３実施形態を説明するために用いた手順概念図で
ある。FIG. 3 is a conceptual diagram of a procedure used for explaining a third embodiment of the method for repairing a wear resistant member according to the present invention.
【００５１】なお、図３中、（ａ）は基材１に耐摩耗部
２を被着し、耐摩耗部２に模擬的に欠陥部３を形成した
テスト材を示す概念図、（ｂ）は耐摩耗部２に模擬的に
形成した欠陥部３に凹部９を形成した概念図、（ｃ）は
凹部９に補修材４を充填したことを示す概念図、（ｄ）
は凹部９に補修材４を充填した耐摩耗部２を加熱し、欠
陥部３および凹部９に補修材４を溶け込ませたことを示
す概念図である。In FIG. 3, (a) is a conceptual diagram showing a test material in which the abrasion resistant portion 2 is adhered to the base material 1 and the defect portion 3 is simulatedly formed on the abrasion resistant portion 2, (b). Is a conceptual diagram in which a concave portion 9 is formed in a defective portion 3 formed in a simulated manner in the wear-resistant portion 2, (c) is a conceptual diagram showing that the concave portion 9 is filled with a repair material 4, (d)
FIG. 3 is a conceptual diagram showing that the wear resistant portion 2 in which the repair material 4 is filled in the recess 9 is heated so that the repair material 4 is melted into the defective portion 3 and the recess 9.
【００５２】以下に、本実施形態に係る耐摩耗部材の補
修方法を説明する。The method of repairing the wear resistant member according to this embodiment will be described below.
【００５３】本実施形態に用いられる基材１は、ステン
レス鋼である。このステンレス鋼製の基材１には、ＴＩ
Ｇ溶接により肉盛り施工した０．２５ｗｔ％Ｃ、２．５
ｗｔ％Ｎｉ、２７ｗｔ％Ｃｒ、２ｗｔ％Ｆｅ、５ｗｔ％
Ｍｏ、残部Ｃｏで組成した耐摩耗部２が被着される。The substrate 1 used in this embodiment is stainless steel. This stainless steel substrate 1 has TI
0.25wt% C, 2.5 built up by G welding
wt% Ni, 27 wt% Cr, 2 wt% Fe, 5 wt%
The wear resistant portion 2 composed of Mo and the balance Co is deposited.
【００５４】また、耐摩耗部２には、模擬的に幅０．２
ｍｍおよび０．５ｍｍ、深さ２ｍｍおよび３ｍｍの欠陥
部３が設けられる。さらに、欠陥部３が中心部の位置に
なるように、欠陥部３の端部から１ｍｍ〜５ｍｍの外周
部に、かつ深さ０．１ｍｍから２ｍｍ程度の機械加工し
た凹部９を設ける。The wear-resistant portion 2 has a width of 0.2 as a simulation.
Defects 3 of mm and 0.5 mm and depths of 2 mm and 3 mm are provided. Further, a machined concave portion 9 having a depth of 0.1 mm to 2 mm is provided on the outer peripheral portion 1 mm to 5 mm from the end of the defective portion 3 so that the defective portion 3 is located at the center position.
【００５５】このような構成を備えたテスト材に、本実
施形態に係わる耐摩耗部材の補修方法を行った。The test material having such a structure was subjected to the method of repairing the wear resistant member according to the present embodiment.
【００５６】まず、補修材４が選定される。この補修材
４は、表１に示すろう材リストから選択した。First, the repair material 4 is selected. The repair material 4 was selected from the brazing material list shown in Table 1.
【００５７】表１から選択したろう材を補修部に水系の
溶剤とバインダーとを加えたペーストで固着した。さら
に、ろう材の融点よりも約５０℃〜１００℃を上廻る温
度まで赤外線集光ヒータまたは高周波加熱ヒータ等を用
いて補修材４を加熱した。加熱の際、補修部を不活性雰
囲気に保持した。ろう材は、その際、酸化することなく
溶融し、耐摩耗部材に濡れが広がったことが認められ
た。The brazing material selected from Table 1 was fixed to the repaired portion with a paste containing an aqueous solvent and a binder. Furthermore, the repair material 4 was heated to a temperature of about 50 ° C. to 100 ° C. higher than the melting point of the brazing material by using an infrared condenser heater or a high frequency heating heater. During heating, the repaired part was kept in an inert atmosphere. At that time, it was confirmed that the brazing material was melted without being oxidized and the wetting spreads to the wear resistant member.
【００５８】上述の実施形態で示した補修材４以外に、
表１に示すリストから選択したろう材、あるいは、ろう
材と耐摩耗部材の５〜１０μｍ粒径の粉末を水系の溶剤
とバインダーとを加えペースト状に混練したものを耐摩
耗部材に約１ｍｍコーティング後加熱した場合も、耐摩
耗部材に補修材４が濡れ広がって、ろう材が補修部に浸
透すると共に耐摩耗部材がろう材により固定されたこと
が認められた。In addition to the repair material 4 shown in the above embodiment,
A brazing material selected from the list shown in Table 1, or a brazing material and a wear-resistant member powder having a particle size of 5 to 10 μm, mixed with an aqueous solvent and a binder and kneaded into a paste, is coated on the wear-resistant member by about 1 mm. Even after the post-heating, it was confirmed that the repair material 4 spread wet to the wear resistant member, the brazing material penetrated into the repaired part, and the wear resistant member was fixed by the brazing material.
【００５９】このように、本実施形態は、基材１に被着
させた耐摩耗部２に欠陥部３が発生した場合、耐摩耗部
２に形成した凹部９に補修材４を充填し、補修材４を取
り付けた耐摩耗部２を加熱して補修材４を欠陥部３およ
び凹部９に溶け込ませた後、耐摩耗部２の表面に再び新
たな第１耐摩耗部５および第２耐摩耗部６を被着させる
ので、欠陥部３および凹部９に補修材４を十分に溶け込
ませて高い品質を維持させることができる。特に、欠陥
部３の幅が大きい場合、ろう材のみでは充填し難い場合
も、耐摩耗部材の粉末がろう材と同時に溶融することな
く補修材４中に固体状態で残留するため、それらがろう
材の液相を保持する役目を果たし、広い欠陥部３にも補
修材４が凝固引けすることなく留めることができる。さ
らに、これらの耐摩耗部材粉末の効果により、補修材４
の耐摩耗性も向上する。As described above, in this embodiment, when the defective portion 3 is generated in the wear resistant portion 2 adhered to the base material 1, the repair material 4 is filled in the recess 9 formed in the wear resistant portion 2. After heating the wear resistant portion 2 to which the repair material 4 is attached to melt the repair material 4 into the defective portion 3 and the recessed portion 9, a new first wear resistant portion 5 and second wear resistant portion 2 are again formed on the surface of the wear resistant portion 2. Since the wear part 6 is adhered, the repair material 4 can be sufficiently melted in the defective part 3 and the recessed part 9 to maintain high quality. In particular, when the width of the defect portion 3 is large, even if it is difficult to fill the brazing material alone, the powder of the wear-resistant member does not melt at the same time as the brazing material, but remains in the solid state in the repair material 4, so that they are brazed. It serves to retain the liquid phase of the material, and the repair material 4 can be retained in the wide defect portion 3 without solidification and shrinkage. Furthermore, due to the effect of these wear resistant member powders, the repair material 4
Wear resistance is also improved.
【００６０】図４〜図７までは、本発明に係る耐摩耗部
材の補修に用いる補修装置の第１から第４実施形態を説
明するために用いた概念図である。FIGS. 4 to 7 are conceptual diagrams used to describe the first to fourth embodiments of the repair device used for repairing the wear resistant member according to the present invention.
【００６１】図４は、耐摩耗部２の欠陥部３に被着した
補修材４で、欠陥部３の近傍を局部的に不活性雰囲気に
保つため、不活性ガス気流噴出用の少なくとも１つ以上
のノズル１０および加熱装置１１を備えた耐摩耗部材の
補修装置の概念図である。FIG. 4 shows a repair material 4 adhered to the defective portion 3 of the wear resistant portion 2. At least one of the repair material 4 for injecting an inert gas flow is provided to locally maintain an inert atmosphere in the vicinity of the defective portion 3. FIG. 3 is a conceptual diagram of a wear-resistant member repair device including the nozzle 10 and the heating device 11 described above.
【００６２】図５は、耐摩耗部２の欠陥部３に被着した
補修材４で、欠陥部３の近傍を局部的に不活性雰囲気に
保つため、不活性ガス気流噴出用の複数のノズル１０
が、加熱装置１１の外周を取り囲むように配置させた耐
摩耗部材の補修装置の概念図である。FIG. 5 shows a repair material 4 adhered to the defective portion 3 of the wear-resistant portion 2. In order to locally maintain an inert atmosphere in the vicinity of the defective portion 3, a plurality of nozzles for jetting an inert gas stream are provided. 10
FIG. 3 is a conceptual diagram of a wear-resistant member repair device arranged so as to surround the outer periphery of the heating device 11.
【００６３】図６は、耐摩耗部２の欠陥部３を局部的に
不活性ガス雰囲気として確保するためら設けた隔壁１２
を備えた耐摩耗部材の補修装置の概念図である。矢印Ａ
Ｒから、不活性ガスが導入される。導入された不活性ガ
スは、隔壁１２の裾部すきま、あるいは、他に設けられ
た出口を通して排出される。その他の番号は、上述と同
じである。FIG. 6 shows a partition wall 12 provided to locally secure the defective portion 3 of the wear resistant portion 2 as an inert gas atmosphere.
FIG. 3 is a conceptual diagram of a wear-resistant member repairing device including the above. Arrow A
From R, an inert gas is introduced. The introduced inert gas is discharged through the bottom clearance of the partition wall 12 or another outlet provided. Other numbers are the same as above.
【００６４】図７は、耐摩耗部２の欠陥部３を局部的に
不活性雰囲気、特に減圧状態を確保するために設けた隔
壁１２を備えた耐摩耗部材の補修装置の概念図である。
矢印ＡＲから、隔壁１２の内部の大気が排出される。FIG. 7 is a conceptual diagram of a wear resistant member repairing apparatus provided with a partition wall 12 provided to locally secure an inactive atmosphere, particularly a reduced pressure state, of the defective portion 3 of the wear resistant portion 2.
From the arrow AR, the atmosphere inside the partition wall 12 is discharged.
【００６５】図６と図７に示した機能の両方を備えた場
合、不活性ガスを導入したのち、過剰な不活性ガスを排
出して、減圧状態の不活性ガスを隔壁１２内に満たして
もよい。When both the functions shown in FIG. 6 and FIG. 7 are provided, after introducing the inert gas, the excess inert gas is discharged to fill the inside of the partition wall 12 with the reduced pressure inert gas. Good.
【００６６】図４から図７までに示した本実施形態に係
る耐摩耗部材の補修装置は、耐摩耗部２の欠陥部３に被
着する補修材４を、加熱装置１１、例えば高周波誘導加
熱の場合、具体的には加熱コイル等を用いて、欠陥部３
と補修材４をろう材の融点より５０℃から１００℃高い
温度に加熱する。ろう材が、Ａｕの場合、融点が約１０
６０℃であるため、１１００〜１２００℃程度で加熱す
る。加熱と共に、ノズル１０からアルゴンガス等の不活
性ガスを数十ミリリットルから数十リットル／分程度流
して、加熱領域の酸化を防止する。吹き付け位置は、欠
陥部３を目標とするが、ろう材が吹き飛ばないように吹
き付けガス量、角度、面積を調整する。The repair device for wear-resistant members according to the present embodiment shown in FIGS. 4 to 7 includes a heating device 11, for example, high-frequency induction heating, for the repair material 4 adhered to the defective portion 3 of the wear-resistant portion 2. In the case of, specifically, by using a heating coil or the like, the defective portion 3
Then, the repair material 4 is heated to a temperature 50 to 100 ° C. higher than the melting point of the brazing material. When the brazing material is Au, the melting point is about 10
Since the temperature is 60 ° C., heating is performed at about 1100 to 1200 ° C. With heating, an inert gas such as argon gas is flowed from the nozzle 10 at a rate of several tens of milliliters to several tens of liters / minute to prevent oxidation of the heating region. The target of the spraying position is the defective portion 3, but the spraying gas amount, angle, and area are adjusted so that the brazing material is not blown off.
【００６７】また、本実施形態に係る耐摩耗部材の補修
装置は、不活性ガスの供給量を少なくして効率よく欠陥
部３や補修材４の近傍を不活性雰囲気にあるいは、真空
中に保つため、例えば隔壁１２を設ける。隔壁１２は、
ドーム型や箱型など欠陥部３の形状に適した形でよく、
隔壁１２の上部や下部の一部が、耐摩耗部２や欠陥部３
の形状に合わせて変形できるベローのようになっていて
もよい。Further, in the wear resistant member repairing apparatus according to this embodiment, the amount of the inert gas supplied is reduced to efficiently keep the vicinity of the defective portion 3 and the repair material 4 in an inert atmosphere or in a vacuum. Therefore, for example, the partition wall 12 is provided. The partition 12 is
A shape suitable for the shape of the defect portion 3, such as a dome shape or a box shape,
Part of the upper or lower part of the partition wall 12 is the wear resistant portion 2 or the defective portion 3.
It may be a bellows that can be deformed according to the shape of.
【００６８】また、隔壁１２には、不活性ガス導入／排
出用の入口、出口が設けられる。減圧をする場合には、
ガス排出口に、真空引き用の真空ポンプ類や真空測定用
のゲージ類を接続される。Further, the partition wall 12 is provided with an inlet and an outlet for introducing / exhausting an inert gas. When decompressing,
Vacuum pumps for vacuuming and gauges for vacuum measurement are connected to the gas outlet.
【００６９】このように、本実施形態に係る耐摩耗部材
の補修装置は、耐摩耗部２の欠陥部３に補修材４を被着
させる際、補修材４にノズル１０から不活性ガスを噴出
させ、加熱装置１１からの補修材４への加熱のときの酸
化を防止するとともに、隔壁１２を設けて不活性ガスの
拡散・放出を防止したので、耐摩耗部２の欠陥部３の補
修を高品質に維持することができ、あるいは真空中に保
つことで耐摩耗部２の欠陥部３の補修を高品質に維持す
ることができる。As described above, the wear resistant member repairing apparatus according to this embodiment ejects the inert gas from the nozzle 10 to the repair material 4 when the repair material 4 is applied to the defective portion 3 of the wear resistant portion 2. In addition to preventing oxidation during heating of the repairing material 4 from the heating device 11, the partition wall 12 is provided to prevent diffusion and release of the inert gas, so that the defective portion 3 of the wear resistant portion 2 can be repaired. It is possible to maintain high quality, or by maintaining in vacuum, it is possible to maintain high quality repair of the defective portion 3 of the wear resistant portion 2.
【００７０】図８は、本発明に係る補修装置を用いて補
修された蒸気弁の第１実施形態を説明するために用いた
概念図である。FIG. 8 is a conceptual diagram used for explaining the first embodiment of the steam valve repaired by using the repair device according to the present invention.
【００７１】本実施形態に係る補修装置を用いて補修さ
れた蒸気弁は、例えば原子力発電プラントに適用する隔
離弁１３の弁座１４に肉盛り施工していた耐摩耗部材８
に摩耗や割れ等の欠陥１５が発生し、弁座１４を補修す
る場合、その補修部分を、例えば高周波誘導加熱コイル
等の加熱装置１１を用いてろう材の融点以上に加熱し、
その時、ノズル１０から不活性ガスを補修部分に吹き付
けて酸化を防止するか、あるいは真空中に保つことで酸
化を防止するものである。なお、加熱装置１１の電源１
６や制御装置１７は、隔離弁１３の上部の弁内筒壁に支
えジグ１８を設け、それに固定する。また、符号１９は
リード線である。The steam valve repaired by using the repair apparatus according to the present embodiment has a wear resistant member 8 which is built up on the valve seat 14 of the isolation valve 13 applied to a nuclear power plant, for example.
When a defect 15 such as abrasion or crack occurs in the valve seat 14 and the valve seat 14 is repaired, the repaired portion is heated to a temperature equal to or higher than the melting point of the brazing material by using a heating device 11 such as a high frequency induction heating coil,
At that time, the inert gas is sprayed from the nozzle 10 to the repaired portion to prevent the oxidation, or the vacuum is kept to prevent the oxidation. The power supply 1 of the heating device 11
The control device 6 and the control device 17 are provided with a supporting jig 18 on the valve inner cylinder wall above the isolation valve 13 and are fixed thereto. Further, reference numeral 19 is a lead wire.
【００７２】このように、本実施形態は、隔離弁１３の
欠陥１５が発生した弁座１４を加熱装置１１で補修する
際、ノズル１０から不活性ガスを吹き付け、あるいは補
修部を真空中に保ちながら制御装置１７からの制御の
下、加熱装置１１を駆動するので、弁座１４の欠陥１５
を高品質に維持させる蒸気弁を提供することができる。As described above, in this embodiment, when the valve seat 14 having the defect 15 of the isolation valve 13 is repaired by the heating device 11, an inert gas is blown from the nozzle 10 or the repair part is kept in vacuum. While the heating device 11 is driven under the control of the control device 17, the defect 15 of the valve seat 14
It is possible to provide a steam valve that maintains high quality.
【００７３】図９は、本発明に係る補修装置を用いて補
修された蒸気弁の第２実施形態を説明するために用いた
概念図である。FIG. 9 is a conceptual diagram used for explaining the second embodiment of the steam valve repaired by using the repair device according to the present invention.
【００７４】本実施形態に係る補修装置を用いて補修さ
れた蒸気弁は、例えば原子力発電プラントに適用する隔
離弁１３の弁座１４に肉盛り施工していた耐摩耗部材８
に摩耗や割れ等の欠陥１５が発生し、弁座１４を補修す
る場合、その補修部分を、例えば高周波誘導加熱コイル
等の加熱装置１１を用いてろう材の融点以上に加熱し、
その時、補修部分を効率よく不活性雰囲気に保つための
隔壁１２を設け、補修部分の酸化を防止するものであ
る。隔壁１２は、必要に応じて、不活性ガスの導入／排
出口を設ける。不活性ガスは、外部に設置した高圧ボン
ベなどのガス源から導入する。加熱装置１１の電源１６
や制御装置１７、あるいは真空ポンプ類等は、隔離弁１
３の上部の弁内筒壁に支えジグ１８を設けるか、あるい
は必要に応じ補修部を真空中に保つための隔壁と真空引
きのための真空ポンプ等を設け、それらを必要に応じ支
えジグに固定する。The steam valve repaired by using the repair apparatus according to the present embodiment has a wear resistant member 8 which is built up on the valve seat 14 of the isolation valve 13 applied to a nuclear power plant, for example.
When a defect 15 such as abrasion or crack occurs in the valve seat 14 and the valve seat 14 is repaired, the repaired portion is heated to a temperature equal to or higher than the melting point of the brazing material by using a heating device 11 such as a high frequency induction heating coil,
At that time, a partition wall 12 is provided for efficiently maintaining the repaired portion in an inert atmosphere to prevent oxidation of the repaired portion. The partition wall 12 is provided with an inert gas inlet / outlet port as needed. The inert gas is introduced from a gas source such as a high pressure cylinder installed outside. Power supply 16 for heating device 11
And the control device 17, or vacuum pumps, etc.
3 is provided with a supporting jig 18 on the inner wall of the valve inside the valve, or a partition for keeping the repaired part in vacuum and a vacuum pump for vacuuming are provided as needed, and these are provided as supporting jigs. Fix it.
【００７５】図１０は、本発明に係る補修装置を用いて
補修された蒸気弁の第３実施形態を説明するために用い
た概念図である。FIG. 10 is a conceptual diagram used for explaining the third embodiment of the steam valve repaired by using the repair device according to the present invention.
【００７６】本実施形態に係る補修装置を用いて補修さ
れた蒸気弁は、例えば上述のように原子力発電プラント
の隔離弁１３の弁座１４に肉盛り施工していた耐摩耗部
材８に摩耗や割れ等の欠陥１５が発生し、弁座１４を補
修する場合、その補修部分を例えば高周波誘導加熱コイ
ル等の加熱装置１１を用いてろう材の融点以上に加熱
し、その時ノズルから不活性ガスを補修部分に吹き付け
て酸化を防止するものである。そして、不活性雰囲気確
保のための隔壁１２を設けるか、あるいは補修部を真空
中に保つための隔壁と真空引きのための真空ポンプ等を
設けてもよい。The steam valve repaired by using the repairing apparatus according to the present embodiment wears or wears the wear resistant member 8 which is built up on the valve seat 14 of the isolation valve 13 of the nuclear power plant as described above. When a defect 15 such as a crack is generated and the valve seat 14 is repaired, the repaired portion is heated to a temperature higher than the melting point of the brazing material by using a heating device 11 such as a high frequency induction heating coil, and then an inert gas is discharged from the nozzle. It is sprayed on the repaired part to prevent oxidation. Then, a partition wall 12 for securing an inert atmosphere may be provided, or a partition wall for keeping the repaired part in vacuum and a vacuum pump for vacuuming may be provided.
【００７７】また、補修部分の加熱に必要な補修装置類
を必要に応じて、補修部分に添って移動可能な移動機構
部２０が設けられる。この移動機構部２０は、隔離弁１
３の上部の弁内筒壁に設けた支えジグ１８に固定する。
移動機構部２０のフレキシブルアーム２１を、補修装置
類に接続し、フレキシブルアーム２１の移動により補修
装置類を補修部分に順次移動させる。移動動力は、人力
あるいは小型モータが用いられる。補修装置類の移動の
際、フレキシブルアーム２１の操作は、遠隔操作で行わ
れるが、その場合、付属して設けたモニタ２２により監
視しながら実施される。Further, a moving mechanism portion 20 is provided which is capable of moving the repairing device necessary for heating the repairing part along with the repairing part, if necessary. The moving mechanism section 20 includes the isolation valve 1
3 is fixed to a support jig 18 provided on the inner wall of the valve inner cylinder.
The flexible arm 21 of the moving mechanism unit 20 is connected to the repair device, and the repair device is sequentially moved to the repair portion by the movement of the flexible arm 21. A human power or a small motor is used as the moving power. When moving the repair devices, the flexible arm 21 is operated by remote control. In that case, the flexible arm 21 is monitored by a monitor 22 attached thereto.
【００７８】モニタ２２は、移動機構部２０の移動の
際、補修すべき部分の見極めにも用いるが、補修時の補
修部分の補修状況、補修状態、補修温度を監視し、その
情報に基づいて指令を作成し、その指令を補修部にフィ
ードバックさせている。モニタ２２は、移動機構部２０
に固定するなどして連動させて移動させている。The monitor 22 is used to identify the portion to be repaired when the moving mechanism 20 is moved, but monitors the repair status, repair state, and repair temperature of the repaired portion at the time of repair, and based on this information. A command is created and the command is fed back to the repair department. The monitor 22 is the moving mechanism unit 20.
It is moved by interlocking it by fixing it to.
【００７９】また、モニタ２２はＴＶカメラで行う。温
度計測は、放射温度計で行う。監視データは、監視装置
に送信し、監視装置から移動制御部や温度制御部にフィ
ードバックし、作業者や補修作業の遠隔指令ができるよ
うになっている。また、これら遠隔指令は、必要に応じ
て自動化されている。The monitor 22 is a TV camera. The temperature is measured with a radiation thermometer. The monitoring data is transmitted to the monitoring device, fed back from the monitoring device to the movement control unit and the temperature control unit, and a remote command for an operator or repair work can be issued. Also, these remote commands are automated as needed.
【００８０】このように、本実施形態は、弁座１４の耐
摩耗部材８の補修にあたり、モニタ２２を介して作業員
に適正な遠隔作業指令を与えるので、作業環境が厳しい
箇所であっても安全にして効率よく高品質のに維持させ
る蒸気弁を提供させることができる。As described above, according to the present embodiment, when the wear resistant member 8 of the valve seat 14 is repaired, an appropriate remote work command is given to the worker through the monitor 22, so that the work environment is severe. It is possible to provide a steam valve that is safe, efficient, and maintains high quality.
【００８１】[0081]
【発明の効果】以上の説明のとおり、本発明に係る耐摩
耗部材の補修方法は、耐摩耗部の欠陥部に補修材を不活
性雰囲気中で加熱させて欠陥部に補修材を十分溶け込ま
せて高い品質を維持させることができる。As described above, according to the method for repairing wear-resistant members of the present invention, the defective material of the wear-resistant portion is heated in an inert atmosphere so that the defective material is sufficiently melted. And maintain high quality.
【００８２】また、耐摩耗部に被着する新たな耐摩耗部
は、より信頼性の高い少なくとも一つ以上の層から成り
立っているので、さらに高い品質を維持させることがで
きる。Further, since the new wear-resistant portion adhered to the wear-resistant portion is composed of at least one layer having higher reliability, it is possible to maintain higher quality.
【００８３】その際、欠陥部に補修材を溶け込ませる工
程と新たな耐摩耗部の被着させる工程を簡素化している
ので、施工時間を短くすることができる。At this time, since the step of melting the repair material into the defective portion and the step of depositing the new wear resistant portion are simplified, the construction time can be shortened.
【００８４】また、本発明に係る耐摩耗部材の補修装置
は、補修部近傍を、加熱時、簡易に不活性雰囲気を確保
できるようにしたので、補修部分の酸化を防止して良好
で信頼性の高い耐摩耗部材の補修を実現することができ
る。Further, in the wear resistant member repairing apparatus according to the present invention, it is possible to easily secure an inert atmosphere in the vicinity of the repaired portion during heating, so that oxidation of the repaired portion is prevented and good reliability is ensured. It is possible to repair a wear-resistant member having a high level.
【００８５】また、本発明に係る補修装置を用いて補修
された蒸気弁は、例えば弁座に発生した欠陥を補修する
際の加熱時、不活性雰囲気を確保できるようにするとと
もに、補修情況をモニタし、その情報を基に的確な指令
を作業員に遠隔的に与えてフィードバックさせるので、
作業の自動化の下、安全かつ効率よく高品質のに維持さ
せる蒸気弁を提供することができる。Further, the steam valve repaired by using the repair apparatus according to the present invention can secure an inert atmosphere at the time of heating when repairing a defect generated in the valve seat, and at the same time, repair conditions can be improved. By monitoring and giving an accurate command remotely to the worker based on that information to feed back,
It is possible to provide a steam valve that safely and efficiently maintains high quality under the automation of work.
【図１】本発明に係る耐摩耗部材の補修方法の第１実施
形態を説明するために用いた手順概念図。FIG. 1 is a conceptual diagram of a procedure used to describe a first embodiment of a method for repairing a wear resistant member according to the present invention.
【図２】本発明に係る耐摩耗部材の補修方法の第２実施
形態を説明するために用いた手順概念図。FIG. 2 is a conceptual diagram of a procedure used to describe a second embodiment of a method for repairing a wear resistant member according to the present invention.
【図３】本発明に係る耐摩耗部材の補修方法の第３実施
形態を説明するために用いた手順概念図。FIG. 3 is a conceptual diagram of a procedure used to describe a third embodiment of a method of repairing a wear resistant member according to the present invention.
【図４】本発明に係る耐摩耗部材の補修に用いる補修装
置の第１実施形態を説明するために用いた概念図。FIG. 4 is a conceptual diagram used for explaining a first embodiment of a repair device used for repairing a wear resistant member according to the present invention.
【図５】本発明に係る耐摩耗部材の補修に用いる補修装
置の第２実施形態を説明するために用いた概念図。FIG. 5 is a conceptual diagram used for explaining a second embodiment of a repair device used for repairing a wear resistant member according to the present invention.
【図６】本発明に係る耐摩耗部材の補修に用いる補修装
置の第３実施形態を説明するために用いた概念図。FIG. 6 is a conceptual diagram used for explaining a third embodiment of a repair device used for repairing a wear resistant member according to the present invention.
【図７】本発明に係る耐摩耗部材の補修に用いる補修装
置の第４実施形態を説明するために用いた概念図。FIG. 7 is a conceptual diagram used for explaining a fourth embodiment of a repair device used for repairing a wear resistant member according to the present invention.
【図８】本発明に係る補修装置を用いて補修された蒸気
弁の第１実施形態を説明するために用いた概念図。FIG. 8 is a conceptual diagram used for explaining the first embodiment of the steam valve repaired by using the repair device according to the present invention.
【図９】本発明に係る補修装置を用いて補修された蒸気
弁の第２実施形態を説明するために用いた概念図。FIG. 9 is a conceptual diagram used to describe a second embodiment of a steam valve repaired by using the repair device according to the present invention.
【図１０】本発明に係る補修装置を用いて補修された蒸
気弁の第３実施形態を説明するために用いた概念図。FIG. 10 is a conceptual diagram used for explaining a third embodiment of a steam valve repaired by using the repair device according to the present invention.
【図１１】電動弁を一例に採った従来の耐摩耗部材の補
修方法を説明するために用いた概念図。FIG. 11 is a conceptual diagram used to explain a conventional method of repairing a wear-resistant member using an electric valve as an example.
１…基材，２…耐摩耗部，３…欠陥部，４…補修材，５
…第１耐摩耗部，６…第２耐摩耗部，７…ろう材，８…
耐摩耗部材，９…凹部，１０…ノズル，１１…加熱装
置，１２…隔壁，１３…隔離弁，１４…弁座，１５…欠
陥，１６…電源，１７…制御装置，１８…支えジグ，１
９…リード線，２０…移動機構部，２１…フレキシブル
アーム，２２…モニタ，１１０…弁ケーシング，１１１
…弁体，１１２…弁棒，１１３…ハンドル，１１４…モ
ータ，１１５…弁座DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Abrasion resistant part, 3 ... Defect part, 4 ... Repair material, 5
... 1st abrasion resistant portion, 6 ... 2nd abrasion resistant portion, 7 ... Brazing material, 8 ...
Abrasion resistant member, 9 ... Recess, 10 ... Nozzle, 11 ... Heating device, 12 ... Partition, 13 ... Isolation valve, 14 ... Valve seat, 15 ... Defect, 16 ... Power supply, 17 ... Control device, 18 ... Support jig, 1
9 ... Lead wire, 20 ... Moving mechanism part, 21 ... Flexible arm, 22 ... Monitor, 110 ... Valve casing, 111
... valve element, 112 ... valve rod, 113 ... handle, 114 ... motor, 115 ... valve seat
───────────────────────────────────────────────────── フロントページの続き (72)発明者 徳永 隆志 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝横浜事業所内 Ｆターム(参考） 3H066 AA01 BA12 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Takashi Tokunaga 8th Shinsugita Town, Isogo Ward, Yokohama City, Kanagawa Prefecture Ceremony company Toshiba Yokohama office F-term (reference) 3H066 AA01 BA12
Claims (8)
した際、前記耐摩耗部に補修材を被着させて補修部分を
局部的に不活性なガス雰囲気および真空中のうちいずれ
か一方に維持させながら前記補修材を前記欠陥に溶け込
ませることを特徴とする耐摩耗部材の補修方法。1. When a defect occurs in a wear resistant portion to be adhered to a substrate, a repair material is adhered to the wear resistant portion so that the repaired portion is in a locally inert gas atmosphere or in a vacuum. A method for repairing a wear-resistant member, characterized in that the repair material is melted into the defect while maintaining one side thereof.
した際、前記耐摩耗部に基材より融点の低い金属材料と
金属材料より融点が高い少なくとも１種類の金属材料粉
末および少なくとも１種類のセラミックス粉末からなる
補修材を被着させて、金属材料より高い温度で金属材料
あるいはセラミックスあるいは基材のいずれかより低い
温度に加熱して補修部分を局部的に不活性なガス雰囲気
および真空中のうち、いずれか一方に維持させながら、
前記補修材を前記欠陥に溶け込ませることを特徴とする
耐摩耗部材の補修方法。2. A metal material having a lower melting point than the base material and at least one kind of metal material powder having a higher melting point than the base material in the wear resistant portion when a defect occurs in the wear resistant portion adhered to the base material, and at least A repair material consisting of one type of ceramic powder is applied and heated at a temperature higher than that of the metal material to a temperature lower than that of the metal material, the ceramics, or the base material, and the repaired portion is locally inert gas atmosphere or While maintaining in one of the vacuum,
A method of repairing a wear resistant member, characterized in that the repair material is dissolved in the defect.
した際、前記耐摩耗部の欠陥部に凹部を形成し、凹部に
補修材を被着させて加熱し、補修部分を局部的に不活性
ガス雰囲気および真空中のうちいずれか一方に維持させ
ながら前記補修材を前記欠陥に溶け込ませることを特徴
とする請求項１〜２記載の耐摩耗部材の補修方法。3. When a defect occurs in a wear resistant portion to be adhered to a base material, a concave portion is formed in the defective portion of the abrasion resistant portion, and a repair material is applied to the concave portion and heated to locally repair the repaired portion. 3. The method for repairing a wear-resistant member according to claim 1, wherein the repair material is dissolved in the defects while being maintained in either an inert gas atmosphere or a vacuum.
装置と前記補修部を真空雰囲気に保つ真空容器および真
空排気装置を備えたことを特徴とする耐摩耗部材の補修
に用いる補修装置。4. A repair device used for repairing a wear-resistant member, comprising: a heating device for applying heat to the repair part of the wear-resistant part; a vacuum container for keeping the repair part in a vacuum atmosphere; and a vacuum exhaust device. .
装置と前記補修部を不活性なガス雰囲気に保つ隔離容器
および不活性ガス供給ノズルを備えたことを特徴とする
耐摩耗部材の補修に用いる補修装置。5. A wear-resistant member, comprising: a heating device for applying heat to the repaired part of the wear-resistant part; an isolation container for keeping the repaired part in an inert gas atmosphere; and an inert gas supply nozzle. Repair device used for repair.
弁の欠陥に熱を加える加熱装置と、前記弁の欠陥部を不
活性なガス雰囲気あるいは真空雰囲気に維持させる装置
と、前記加熱温度を制御する装置を必要に応じて弁内筒
壁に設けた支えジグで支持させたことを特徴とする耐摩
耗部材の補修方法。6. A heating device for applying heat to the defect of the valve when repairing the defect of the wear resistant part of the valve, a device for maintaining the defective part of the valve in an inert gas atmosphere or a vacuum atmosphere, A method for repairing a wear-resistant member, characterized in that a device for controlling a heating temperature is supported by a supporting jig provided on a valve inner cylinder wall as needed.
弁の欠陥に熱を加える加熱装置と、前記弁の欠陥部を不
活性なガス雰囲気あるいは真空雰囲気に維持させる装置
と、前記加熱温度を制御する装置を必要に応じて進退移
動させる移動機構部と、前記弁の欠陥を補修するときの
補修部分の温度や補修状況を監視する装置を用いて補修
することを特徴とする耐摩耗部材の補修方法。7. A heating device for applying heat to the defect of the valve when repairing the defect of the wear resistant part of the valve, a device for maintaining the defective part of the valve in an inert gas atmosphere or a vacuum atmosphere, A moving mechanism that moves the device for controlling the heating temperature back and forth as necessary, and a device that monitors the temperature and repair status of the repaired part when repairing a defect in the valve are used for repairing. How to repair worn parts.
項１〜７記載の補修方法および補修装置を用いて補修す
ることを特徴とする蒸気弁。8. A steam valve, which is repaired by using the repairing method and the repairing device according to any one of claims 1 to 7 when repairing a defect in a wear resistant portion of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188376A JP2003001402A (en) | 2001-06-21 | 2001-06-21 | Wear-resistant member repairing method, repairing device used for repairing wear-resistant member, and steam valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188376A JP2003001402A (en) | 2001-06-21 | 2001-06-21 | Wear-resistant member repairing method, repairing device used for repairing wear-resistant member, and steam valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010086291A Division JP2010167499A (en) | 2010-04-02 | 2010-04-02 | Method for repairing wear resistant member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003001402A true JP2003001402A (en) | 2003-01-08 |
Family
ID=19027490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188376A Pending JP2003001402A (en) | 2001-06-21 | 2001-06-21 | Wear-resistant member repairing method, repairing device used for repairing wear-resistant member, and steam valve |
Country Status (1)
| Country | Link |
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| JP (1) | JP2003001402A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246570A (en) * | 2004-03-05 | 2005-09-15 | Toshiba Corp | Method for repairing wear resistive portion |
| JP2005254409A (en) * | 2004-03-12 | 2005-09-22 | Toshiba Corp | Repaire method for abrasion resistant member |
| JP2012236234A (en) * | 2012-08-27 | 2012-12-06 | Ihi Corp | Repaired structure |
| CN112222756A (en) * | 2020-10-21 | 2021-01-15 | 北京建工土木工程有限公司 | Method for repairing cutter head of shield tunneling machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577855B2 (en) * | 1977-03-17 | 1982-02-13 | ||
| JPS5916905A (en) * | 1982-05-28 | 1984-01-28 | ゼネラル・エレクトリツク・カンパニイ | Repairing of hard alloy article and alloy powder mixture |
| JPH06269936A (en) * | 1993-03-18 | 1994-09-27 | Techno Kooto Kk | Repairing method by build up welding of metallic member, repaired metallic member by the method and repairing equipment |
| JPH07140275A (en) * | 1993-11-19 | 1995-06-02 | Toshiba Corp | Nuclear fusion devce repairing method and devce therefor |
| JPH09168927A (en) * | 1995-12-19 | 1997-06-30 | Hitachi Ltd | Method of repairing moving blade and stator blade for gas turbine |
| JPH10110204A (en) * | 1996-10-03 | 1998-04-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method for repairing metallic material |
| JPH10109179A (en) * | 1996-10-04 | 1998-04-28 | Atsushi Niinuma | Build-up welding device for conductive metallic member of aluminum, or the like |
| JPH1133832A (en) * | 1997-07-23 | 1999-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Method for repairing aluminum alloy part item |
| JP2000084670A (en) * | 1998-09-08 | 2000-03-28 | Natl Res Inst For Metals | Welding method |
-
2001
- 2001-06-21 JP JP2001188376A patent/JP2003001402A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577855B2 (en) * | 1977-03-17 | 1982-02-13 | ||
| JPS5916905A (en) * | 1982-05-28 | 1984-01-28 | ゼネラル・エレクトリツク・カンパニイ | Repairing of hard alloy article and alloy powder mixture |
| JPH06269936A (en) * | 1993-03-18 | 1994-09-27 | Techno Kooto Kk | Repairing method by build up welding of metallic member, repaired metallic member by the method and repairing equipment |
| JPH07140275A (en) * | 1993-11-19 | 1995-06-02 | Toshiba Corp | Nuclear fusion devce repairing method and devce therefor |
| JPH09168927A (en) * | 1995-12-19 | 1997-06-30 | Hitachi Ltd | Method of repairing moving blade and stator blade for gas turbine |
| JPH10110204A (en) * | 1996-10-03 | 1998-04-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method for repairing metallic material |
| JPH10109179A (en) * | 1996-10-04 | 1998-04-28 | Atsushi Niinuma | Build-up welding device for conductive metallic member of aluminum, or the like |
| JPH1133832A (en) * | 1997-07-23 | 1999-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Method for repairing aluminum alloy part item |
| JP2000084670A (en) * | 1998-09-08 | 2000-03-28 | Natl Res Inst For Metals | Welding method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246570A (en) * | 2004-03-05 | 2005-09-15 | Toshiba Corp | Method for repairing wear resistive portion |
| JP2005254409A (en) * | 2004-03-12 | 2005-09-22 | Toshiba Corp | Repaire method for abrasion resistant member |
| JP2012236234A (en) * | 2012-08-27 | 2012-12-06 | Ihi Corp | Repaired structure |
| CN112222756A (en) * | 2020-10-21 | 2021-01-15 | 北京建工土木工程有限公司 | Method for repairing cutter head of shield tunneling machine |
| CN112222756B (en) * | 2020-10-21 | 2022-03-25 | 北京建工土木工程有限公司 | Method for repairing cutter head of shield tunneling machine |
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