JPH1015671A - Welding method for electron beam welding structure of different material - Google Patents
Welding method for electron beam welding structure of different materialInfo
- Publication number
- JPH1015671A JPH1015671A JP14223696A JP14223696A JPH1015671A JP H1015671 A JPH1015671 A JP H1015671A JP 14223696 A JP14223696 A JP 14223696A JP 14223696 A JP14223696 A JP 14223696A JP H1015671 A JPH1015671 A JP H1015671A
- Authority
- JP
- Japan
- Prior art keywords
- electron beam
- welding
- cast steel
- kinds
- dissimilar
- 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.)
- Withdrawn
Links
Landscapes
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、異材電子ビーム溶
接構造物の溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a dissimilar electron beam welded structure.
【0002】[0002]
【従来の技術】従来、タービン車室等異材溶接構造部の
溶接加工においては、一般に異材間ではアーク溶接が困
難なため電子ビーム溶接が採用されており、例えば図2
横断面図に示すように、2Cr鋳鋼01と9Cr鋳鋼0
2は、その開先面を直接突合わせて電子ビーム溶接が施
されて、電子ビーム溶接部03が形成されている。2. Description of the Related Art Conventionally, in welding processing of a dissimilar material welding structure such as a turbine casing, it is generally difficult to perform arc welding between dissimilar materials, so that electron beam welding is employed.
As shown in the cross-sectional view, 2Cr cast steel 01 and 9Cr cast steel 0
In No. 2, electron beam welding is performed by directly abutting the groove surfaces, and an electron beam welded portion 03 is formed.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな2Cr鋳鋼,9Cr鋳鋼等のように、酸素,窒素,
水素等ガス成分を多量に含む鋼材や炭素含有量の多い鋼
材の異材を電子ビーム溶接すると、同図に示すように、
電子ビーム溶接部03やその周辺の母材熱影響部に、空
洞欠陥04,炭素の拡散・硬化による溶接割れ05や、
さらに異材電位差によるビーム偏向に基づく目外れ欠陥
等が発生する惧れがあり、特に大物部材,厚肉部材にお
いては、ガス成分放散が困難なためその傾向が強い。However, such as 2Cr cast steel and 9Cr cast steel, oxygen, nitrogen,
Electron beam welding of different materials such as steel containing a large amount of gas components such as hydrogen and steel having a high carbon content, as shown in the figure,
In the electron beam welded part 03 and the surrounding heat affected zone of the base metal, there are cavity defects 04, weld cracks 05 due to diffusion and hardening of carbon,
Further, there is a fear that an out-of-focus defect or the like may occur due to beam deflection due to a potential difference between different materials. Particularly in a large member or a thick member, it is difficult to dissipate gas components, and this tendency is strong.
【0004】本発明はこのような事情に鑑みて提案され
たもので、ガス成分滞溜による空洞欠陥,炭素の拡散・
硬化による溶接割れ,ビーム偏向による目外れ等がない
健全な電子ビーム溶接部が得られる異材電子ビーム溶接
構造物の溶接方法を提供することを目的とする。[0004] The present invention has been proposed in view of the above-mentioned circumstances, and includes a cavity defect due to accumulation of a gas component and diffusion of carbon.
It is an object of the present invention to provide a method for welding a dissimilar electron beam welded structure capable of obtaining a sound electron beam welded portion without welding cracks due to hardening and unsightlyness due to beam deflection.
【0005】[0005]
【課題を解決するための手段】このような目的を達成す
るために、請求項1の発明は、2種の異材電子ビーム溶
接構造物の溶接を行うに当たって、まず、2種の異材開
先面にそれぞれ真空容器中で電子ビーム溶接によりガス
成分の少ない溶加材を肉盛した肉盛溶接部を形成し、次
に、同肉盛溶接部をそれぞれ改めて開先加工したうえ、
同開先同士を突合わせ真空容器中で電子ビーム溶接する
ことを特徴とする。In order to achieve the above object, according to the first aspect of the present invention, when welding two kinds of dissimilar electron beam welding structures, first, two kinds of dissimilar material beveled surfaces are used. In each case, a weld overlay was formed by overlaying a filler material with a low gas component by electron beam welding in a vacuum vessel, and then the weld overlay was re-grooved,
The grooves are butt-butted and electron beam welded in a vacuum vessel.
【0006】請求項2の発明は、請求項1において、そ
の2種の異材の一方を2Cr鋳鋼,他方を9Cr鋳鋼と
したことを特徴とする。The invention of claim 2 is characterized in that, in claim 1, one of the two kinds of dissimilar materials is 2Cr cast steel and the other is 9Cr cast steel.
【0007】本発明異材電子ビーム溶接構造物の溶接方
法においては、鋳鋼の電子ビーム溶接に問題となる空洞
欠陥を防止できるとともに、2Cr鋳鋼と9Cr鋳鋼の
ような異材電子ビーム溶接に問題となる溶接割れが防止
でき、さらに異材の電位差によるビーム偏向に基づく目
外れ欠陥を防止できる。In the method of welding a dissimilar electron beam welded structure according to the present invention, it is possible to prevent a cavity defect which is a problem in the electron beam welding of cast steel, and to weld a dissimilar electron beam such as 2Cr cast steel and 9Cr cast steel. Cracks can be prevented, and unsightly defects based on beam deflection due to the potential difference between different materials can be prevented.
【0008】[0008]
【発明の実施の形態】本発明の異材電子ビーム溶接方法
を2Cr鋳鋼と9Cr鋳鋼の厚板継手に適用した一実施
形態を図面について説明すると、図1は本発明方法を加
工工程順(I),(II),(〓)に示した工程図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the dissimilar electron beam welding method of the present invention is applied to a thick plate joint of 2Cr cast steel and 9Cr cast steel will be described with reference to the drawings. FIG. 1 shows the method of the present invention in the order of processing steps (I). , (II), (〓).
【0009】まず、図1(I)において、真空容器中
で、厚板の2Cr鋳鋼1及び厚板の9Cr鋳鋼2の開先
面に、それぞれ数mm厚のインコネル材置板プレート3
を当てるか、又はインコネル材フィラーワイヤを連続的
に供給しながら、電子銃4から電子ビーム5を照射して
肉盛施工し、肉盛溶接部6を形成する。First, in FIG. 1 (I), an inconel material placing plate plate 3 having a thickness of several mm is placed on a groove surface of a thick 2Cr cast steel 1 and a thick 9Cr cast steel 2 in a vacuum vessel.
Or by continuously supplying an Inconel material filler wire while irradiating an electron beam 5 from an electron gun 4 to perform overlaying, thereby forming an overlay welding portion 6.
【0010】その後、同図(II)に示すように、2Cr
鋳鋼1,9Cr鋳鋼2の肉盛溶接部6に、それぞれ改め
て開先仕上げ加工を行ったうえ、開先面7同士を突合わ
せ、両者を真空容器中に入れ電子ビーム溶接を施す。Thereafter, as shown in FIG.
A groove finishing process is performed on the overlay welding portions 6 of the cast steels 1 and 9Cr cast steel 2 respectively, and the groove surfaces 7 are abutted with each other, and both are put in a vacuum vessel and subjected to electron beam welding.
【0011】さらに、同図(〓)に示すように、電子ビ
ーム溶接部8を形成する。Further, as shown in FIG. 1 (A), an electron beam weld 8 is formed.
【0012】[0012]
【発明の効果】このような溶接方法においては、2Cr
鋳鋼1,9Cr鋳鋼2の開先面に、それぞれインコネル
材置板プレート3等ガス成分の少ない溶加材による肉盛
溶接部6を施したうえ、再加工の開先面を突き合わせて
電子ビーム溶接部8を形成したので、電子ビーム溶接部
8には、ガス滞溜による空洞欠陥の発生がないのみなら
ず、炭素の拡散,硬化による溶接割れの発生もなく、電
位差によるビーム偏向に基づく目外れ欠陥もない。In such a welding method, 2Cr
A bead welded part 6 made of a filler material having a small gas component such as an Inconel material placing plate 3 is applied to the groove face of the cast steel 1 or 9Cr cast steel 2 and then the reworked groove face is butted with electron beam welding. Since the portion 8 is formed, the electron beam welded portion 8 has not only the occurrence of cavity defects due to gas stagnation but also the occurrence of welding cracks due to diffusion and hardening of carbon, and an out-of-focus condition based on beam deflection due to a potential difference. No defects.
【0013】要するに請求項1の発明によれば、2種の
異材電子ビーム溶接構造物の溶接を行うに当たって、ま
ず、2種の異材開先面にそれぞれ真空容器中で電子ビー
ム溶接によりガス成分の少ない溶加材を肉盛した肉盛溶
接部を形成し、次に、同肉盛溶接部をそれぞれ改めて開
先加工したうえ、同開先同士を突合わせ真空容器中で電
子ビーム溶接することにより、ガス成分滞溜による空洞
欠陥,炭素の拡散・硬化による溶接割れ,ビーム偏向に
よる目外れ等がない健全な電子ビーム溶接部が得られる
異材電子ビーム溶接構造物の溶接方法を得るから、本発
明は産業上極めて有益なものである。In short, according to the first aspect of the present invention, when welding two kinds of dissimilar electron beam welding structures, first, gas components of the two kinds of dissimilar materials are formed by electron beam welding in a vacuum vessel on the two different kinds of beveled surfaces. By forming a weld overlay where a small amount of filler metal is overlaid, and then re-grooving each of the overlay welds, the edges are butt-butted and electron beam welded in a vacuum vessel. The present invention provides a method for welding a dissimilar material electron beam welded structure, which can provide a sound electron beam welded part without a cavity defect due to accumulation of gas components, welding cracks due to diffusion and hardening of carbon, and misalignment due to beam deflection. Is extremely useful in industry.
【0014】請求項2の発明によれば、請求項1におい
て、その2種の異材の一方を2Cr鋳鋼,他方を9Cr
鋳鋼としたことにより、ガス成分滞溜による空洞欠陥,
炭素の拡散・硬化による溶接割れ,ビーム偏向による目
外れ等がない健全な電子ビーム溶接部が得られる異材電
子ビーム溶接構造物の溶接方法を得るから、本発明は産
業上極めて有益なものである。According to a second aspect of the present invention, in the first aspect, one of the two kinds of dissimilar materials is 2Cr cast steel and the other is 9Cr cast steel.
By using cast steel, cavity defects due to gas component accumulation,
The present invention is extremely useful in industry because it provides a method of welding a dissimilar electron beam welded structure that can provide a sound electron beam welded part without welding cracks due to diffusion and hardening of carbon and unsightlyness due to beam deflection. .
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明を2Cr鋳鋼と9Cr鋳鋼の厚板継手に
適用した一実施例を加工工程順に示した断面図である。FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to a thick plate joint of 2Cr cast steel and 9Cr cast steel in the order of processing steps.
【図2】従来の2Cr鋳鋼と9Cr鋳鋼の溶接構造物の
断面図である。FIG. 2 is a cross-sectional view of a conventional welded structure of 2Cr cast steel and 9Cr cast steel.
1 2Cr鋳鋼 2 9Cr鋳鋼 3 インコネル材置板プレート 4 電子銃 5 電子ビーム 6 肉盛溶接部 7 開先面 8 電子ビーム溶接部 DESCRIPTION OF SYMBOLS 1 2Cr cast steel 2 9Cr cast steel 3 Inconel material placing plate 4 Electron gun 5 Electron beam 6 Overlay weld 7 Groove face 8 Electron beam weld
Claims (2)
を行うに当たって、まず、2種の異材開先面にそれぞれ
真空容器中で電子ビーム溶接によりガス成分の少ない溶
加材を肉盛した肉盛溶接部を形成し、次に、同肉盛溶接
部をそれぞれ改めて開先加工したうえ、同開先同士を突
合わせ真空容器中で電子ビーム溶接することを特徴とす
る異材電子ビーム溶接構造物の溶接方法。When welding two kinds of dissimilar material electron beam welded structures, first, a filler material having a small gas component is laid on each of the two kinds of dissimilar material bevel surfaces by electron beam welding in a vacuum vessel. A dissimilar material electron beam welding structure in which a weld overlay is formed, and then the weld overlay is newly re-grooved, and the gaps are butt-butted and electron beam welded in a vacuum vessel. How to weld things.
方を2Cr鋳鋼,他方を9Cr鋳鋼としたことを特徴と
する異材電子ビーム溶接構造物の溶接方法。2. The method for welding a dissimilar electron beam welded structure according to claim 1, wherein one of the two kinds of dissimilar materials is 2Cr cast steel and the other is 9Cr cast steel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14223696A JPH1015671A (en) | 1996-05-13 | 1996-05-13 | Welding method for electron beam welding structure of different material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14223696A JPH1015671A (en) | 1996-05-13 | 1996-05-13 | Welding method for electron beam welding structure of different material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1015671A true JPH1015671A (en) | 1998-01-20 |
Family
ID=15310602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14223696A Withdrawn JPH1015671A (en) | 1996-05-13 | 1996-05-13 | Welding method for electron beam welding structure of different material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1015671A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106735827A (en) * | 2016-12-16 | 2017-05-31 | 中航动力股份有限公司 | A kind of martensitic stain less steel electron beam welding control method |
RU2701262C1 (en) * | 2019-03-29 | 2019-09-25 | Паршуков Леонид Иванович | Method for electron-beam butt welding |
-
1996
- 1996-05-13 JP JP14223696A patent/JPH1015671A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106735827A (en) * | 2016-12-16 | 2017-05-31 | 中航动力股份有限公司 | A kind of martensitic stain less steel electron beam welding control method |
CN106735827B (en) * | 2016-12-16 | 2019-11-05 | 中航动力股份有限公司 | A kind of martensitic stain less steel electron beam welding control method |
RU2701262C1 (en) * | 2019-03-29 | 2019-09-25 | Паршуков Леонид Иванович | Method for electron-beam butt welding |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19971113 |