JP3473195B2 - Magnetic stir welding equipment - Google Patents
Magnetic stir welding equipmentInfo
- Publication number
- JP3473195B2 JP3473195B2 JP18703995A JP18703995A JP3473195B2 JP 3473195 B2 JP3473195 B2 JP 3473195B2 JP 18703995 A JP18703995 A JP 18703995A JP 18703995 A JP18703995 A JP 18703995A JP 3473195 B2 JP3473195 B2 JP 3473195B2
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- Prior art keywords
- welded
- welding
- magnetic
- members
- electrode
- Prior art date
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- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は磁気撹拌溶接装置、
特にニッケル基合金鋼やステンレス鋼を接合する手段と
して用いる磁気撹拌溶接装置に関するものである。TECHNICAL FIELD The present invention relates to a magnetic stir welding apparatus,
In particular, the present invention relates to a magnetic stir welding apparatus used as a means for joining nickel-base alloy steel and stainless steel.
【０００２】[0002]
【従来の技術】従来、インコネル等のニッケル基合金鋼
やステンレス鋼を接合する手段として、図５及び図６に
示すような磁気撹拌溶接装置が使用されている。2. Description of the Related Art Conventionally, a magnetic stir welding apparatus as shown in FIGS. 5 and 6 has been used as a means for joining nickel-base alloy steel such as Inconel or stainless steel.
【０００３】１は溶接トーチ（ＴＩＧ溶接トーチ）であ
り、該溶接トーチ１は、筒状のガスノズル１ａと、先端
部がガスノズル１ａから突出し且つガスノズル１ａの内
周面との間に不活性ガス（アルゴンガス）が流通するガ
ス流路１ｂが形成されるようにガスノズル１ａに挿通さ
れたタングステンよりなる棒状の電極（アーク溶接用電
極）１ｃとから構成されている。Reference numeral 1 is a welding torch (TIG welding torch). The welding torch 1 includes an inert gas (1) between a cylindrical gas nozzle 1a and an inner peripheral surface of the gas nozzle 1a, the tip of which protrudes from the gas nozzle 1a. It is composed of a rod-shaped electrode (arc welding electrode) 1c made of tungsten which is inserted into the gas nozzle 1a so as to form a gas flow path 1b through which argon gas) flows.
【０００４】この溶接トーチ１の電極１ｃには、溶接用
電源（直流電源）２のマイナス端子が配線２ａを介して
接続されている。A negative terminal of a welding power source (DC power source) 2 is connected to the electrode 1c of the welding torch 1 via a wiring 2a.
【０００５】３は複数の磁気コイルであり、該磁気コイ
ル３は、溶接トーチ１のガスノズル１ａの外周面に沿っ
て該ガスノズル１ａを周方向に取り囲み且つ各磁気コイ
ル３のコア３ａが電極１ｃの軸心に対して平行となるよ
うに配置されており、各磁気コイル３は、ブラケット３
ｂによってガスノズル１ａに固定されている。Reference numeral 3 denotes a plurality of magnetic coils. The magnetic coil 3 circumferentially surrounds the gas nozzle 1a of the welding torch 1 along the outer peripheral surface thereof, and the core 3a of each magnetic coil 3 has an electrode 1c. The magnetic coils 3 are arranged so as to be parallel to the axis, and
It is fixed to the gas nozzle 1a by b.
【０００６】これらの各磁気コイル３には、励磁用電源
（交流電源）４の各端子が配線４ａ，４ｂを介して接続
されている。To each of these magnetic coils 3, each terminal of an exciting power source (AC power source) 4 is connected via wirings 4a and 4b.
【０００７】５はワイヤ送給機構であり、該ワイヤ送給
機構５は、溶接用ワイヤ５ａが巻き付けられたワイヤリ
ール５ｂと、該ワイヤリール５ｂから溶接用ワイヤ５ａ
を繰り出すワイヤ送出機５ｃと、該ワイヤ送出機５ｃよ
り送出される溶接用ワイヤ５ａを所定位置へ導くための
ワイヤガイド５ｄとから構成されている。Reference numeral 5 denotes a wire feeding mechanism. The wire feeding mechanism 5 includes a wire reel 5b around which a welding wire 5a is wound and a welding wire 5a from the wire reel 5b.
And a wire guide 5d for guiding the welding wire 5a fed from the wire feeder 5c to a predetermined position.
【０００８】６は移動機構であり、該移動機構６は、一
対のガイドレール６ａ，６ａと、該ガイドレール６ａ，
６ａに沿って転動する走行車輪６ｂ，６ｂと、該走行車
輪６ｂ，６ｂを支持する左右一対の支持脚６ｃ，６ｃを
備えた移動フレーム６ｄとから構成されている。A moving mechanism 6 includes a pair of guide rails 6a, 6a, and the guide rails 6a, 6a.
It is composed of traveling wheels 6b and 6b rolling along 6a and a moving frame 6d having a pair of left and right supporting legs 6c and 6c for supporting the traveling wheels 6b and 6b.
【０００９】先に述べた溶接トーチ１は、電極１ｃの先
端部が下方を向くように移動フレーム６ｄに取り付けら
れ、また、ワイヤ送給機構５は、溶接用ワイヤ５ａを電
極１ｃの先端部近傍へ送給し得るように移動フレーム６
ｄに取り付けられている。The above-described welding torch 1 is attached to the moving frame 6d so that the tip of the electrode 1c faces downward, and the wire feeding mechanism 5 attaches the welding wire 5a to the vicinity of the tip of the electrode 1c. Mobile frame 6 for delivery to
It is attached to d.
【００１０】以下、図５及び図６に示す磁気撹拌溶接装
置の作動を説明する。The operation of the magnetic stir welding apparatus shown in FIGS. 5 and 6 will be described below.
【００１１】２つの被溶接部材７，７を突き合せ溶接に
よって接合する際には、被溶接部材７，７の互いに接合
すべき部分に開先き加工を施し、この開先き加工部分が
対峙するように被溶接部材７，７を略水平に位置させ
る。When two members to be welded 7, 7 are to be joined by butt welding, the portions of the members to be welded 7, 7 to be joined to each other are grooved, and the grooved portions face each other. The members to be welded 7, 7 are positioned substantially horizontally as described above.
【００１２】また、開先き加工部分に対して平行となる
ように、被溶接部材７，７の上面にガイドレール６ａ，
６ａをそれぞれ敷設し、該ガイドレール６ａ，６ａに沿
って走行車輪６ｂ，６ｂが転動し得るように移動フレー
ム６ｄを配置して、溶接トーチ１の電極１ｃの先端部を
被溶接部材７，７の開先き加工部分の直上に位置させ
る。Further, the guide rails 6a, 6a are provided on the upper surfaces of the members 7, 7 to be welded so as to be parallel to the grooved portion.
6a are laid respectively, and a moving frame 6d is arranged so that the traveling wheels 6b, 6b can roll along the guide rails 6a, 6a, and the tip of the electrode 1c of the welding torch 1 is welded to the member to be welded 7, It is located immediately above the grooved portion of 7.
【００１３】更に、被溶接部材７，７の端部に溶接用電
源２のプラス端子を配線２ｂを介して接続する。Further, the positive terminal of the welding power source 2 is connected to the ends of the members to be welded 7, 7 via the wiring 2b.
【００１４】次いで、溶接トーチ１のガス流路１ｂから
被溶接部材７，７の開先き継手部分に向ってアルゴンガ
ス等の不活性ガスを噴射しながら、溶接用電源２を作動
させると、被溶接部材７，７の端部から開先き加工部分
へ向う溶接電流（直流電流）Ｉが流れるとともに、被溶
接部材７，７の開先き加工部分と電極１ｃの先端部との
間にアークが生じる。Next, when the welding power source 2 is operated while injecting an inert gas such as argon gas from the gas flow path 1b of the welding torch 1 toward the groove joints of the members 7, 7 to be welded, A welding current (DC current) I flows from the ends of the members to be welded 7, 7 to the grooved portion, and between the grooved portion of the members to be welded 7 and the tip of the electrode 1c. An arc occurs.
【００１５】また、ワイヤ送出機５ｃを作動させて電極
１ｃの近傍へ溶接用ワイヤ５ａを送給すると、前記のア
ークによって溶接用ワイヤ５ａが溶融し、電極１ｃの略
直下における被溶接部材７，７の開先き加工部分の間に
溶融金属層１１が形成される。When the wire feeder 5c is operated to feed the welding wire 5a to the vicinity of the electrode 1c, the welding wire 5a is melted by the above-mentioned arc, and the member to be welded 7 directly below the electrode 1c is welded. A molten metal layer 11 is formed between the groove-processed portions of 7.
【００１６】一方、励磁用電源４を作動させることによ
り励磁電流（交流電流）を各磁気コイル３に通電する
と、該各磁気コイル３から被溶接部材７，７の板厚方向
に該被溶接部材７，７及び溶融金属層１１を突き抜ける
磁場Ｍが、溶接トーチ側から反溶接トーチ側へ、あるい
は反溶接トーチ側から溶接トーチ側へ、励磁電流の周波
数に応じて交互に発生する。On the other hand, when an exciting current (alternating current) is supplied to each magnetic coil 3 by operating the exciting power source 4, the magnetic coil 3 is welded in the plate thickness direction of the welded members 7, 7. A magnetic field M penetrating 7, 7 and the molten metal layer 11 is alternately generated from the welding torch side to the anti-welding torch side or from the anti-welding torch side to the welding torch side according to the frequency of the exciting current.
【００１７】磁場Ｍが発生すると、溶接電流Ｉにローレ
ンツ力が作用し、磁場Ｍ及び溶接電流Ｉの双方の進行方
向に対して略直交する方向へ溶接電流Ｉを曲げられるこ
とにより、溶融金属層１１が撹拌される。When the magnetic field M is generated, the Lorentz force acts on the welding current I, and the welding current I is bent in a direction substantially orthogonal to the traveling directions of both the magnetic field M and the welding current I, whereby the molten metal layer 11 is stirred.
【００１８】更に、移動フレーム６ｄを移動させると、
被溶接部材７，７の開先き加工部分に沿って溶融金属層
１１が伸張するとともに該溶融金属層１１が逐次凝固
し、被溶接部材７，７が互いに接合される。Further, when the moving frame 6d is moved,
The molten metal layer 11 extends along the grooved portions of the members to be welded 7, 7 and the molten metal layer 11 is sequentially solidified so that the members to be welded 7, 7 are joined to each other.
【００１９】このように、図５及び図６に示す磁気撹拌
溶接装置においては、ローレンツ力によって溶融金属層
１１を撹拌するので、該溶融金属層１１が凝固する際に
超音波探傷検査の妨げとなる柱状結晶が形成されず、被
溶接部材７，７の溶接継手に対する超音波探傷性を良好
な状態で実施することができる。As described above, in the magnetic stir welding apparatus shown in FIGS. 5 and 6 , since the molten metal layer 11 is stirred by the Lorentz force, the ultrasonic flaw inspection is hindered when the molten metal layer 11 is solidified. The columnar crystals are not formed, and the ultrasonic flaw detection of the welded joints of the members 7 and 7 to be welded can be performed in a good state.
【００２０】[0020]
【発明が解決しようとする課題】上述したように、溶融
金属層１１が効果的に撹拌されるようにするためには、
磁場Ｍが溶融金属層１１を突き抜けたときに、５００ガ
ウス程度の磁場強度を有している必要がある。As mentioned above, in order to effectively stir the molten metal layer 11,
When the magnetic field M penetrates the molten metal layer 11, it must have a magnetic field strength of about 500 Gauss.
【００２１】ところが、図５及び図６に示す磁気撹拌溶
接装置では、磁気コイル３に通電される励磁電流の電流
値が一定であるため、互いに接合すべき被溶接部材７，
７の板厚が厚くなると、被溶接部材７，７及び溶融金属
層１１に対する磁場Ｍの磁場強度が不足する傾向を呈す
る。However, in the magnetic stir welding apparatus shown in FIGS. 5 and 6 , since the current value of the exciting current applied to the magnetic coil 3 is constant, the members to be welded 7 to be joined to each other,
As the plate thickness of 7 increases, the magnetic field strength of the magnetic field M with respect to the members to be welded 7, 7 and the molten metal layer 11 tends to be insufficient.
【００２２】また、各磁気コイル３が溶接トーチ１に隣
接して設けられているので、連続的に溶接作業を実施す
る際に、溶接トーチ１とともに磁気コイル３の温度が上
昇すると、磁場Ｍの磁場強度が低下する傾向を呈する。Further, since each magnetic coil 3 is provided adjacent to the welding torch 1, when the temperature of the magnetic coil 3 rises together with the welding torch 1 during continuous welding work, the magnetic field M The magnetic field strength tends to decrease.
【００２３】このように、被溶接部材７，７及び溶融金
属層１１に対する磁場Ｍの磁場強度が不足、もしくは低
下すると、磁場Ｍが被溶接部材７，７及び溶融金属層１
１を突き抜けられなくなったり、あるいは磁場Ｍが曲げ
られ、ローレンツ力による溶融金属層１１の撹拌を効果
的に行うことができなくなって、溶融金属層１１が凝固
する際に超音波探傷検査の妨げとなる柱状結晶が形成さ
れやすくなる。As described above, when the magnetic field strength of the magnetic field M with respect to the members to be welded 7, 7 and the molten metal layer 11 is insufficient or lowered, the magnetic field M is changed to the members to be welded 7, 7 and the molten metal layer 1.
1 cannot be penetrated, or the magnetic field M is bent, so that the molten metal layer 11 cannot be effectively stirred by Lorentz force, which hinders ultrasonic flaw detection when the molten metal layer 11 solidifies. Columnar crystals are easily formed.
【００２４】本発明は上述した実情に鑑みてなしたもの
で、被溶接部材の板厚や溶接トーチの温度上昇に影響さ
れることなく、ローレンツ力による溶融金属層の撹拌を
行うことが可能な磁気撹拌溶接装置を提供することを目
的としている。The present invention has been made in view of the above situation, and it is possible to stir the molten metal layer by Lorentz force without being affected by the plate thickness of the member to be welded or the temperature rise of the welding torch. An object is to provide a magnetic stir welding apparatus.
【００２５】[0025]
【課題を解決するための手段】上記目的を達成するため
に本発明では、アーク溶接用電極を有する溶接トーチ
と、アーク溶接用電極と被溶接部材との間にアークを発
生させる溶接用電源と、前記のアーク溶接用電極と略平
行なコアをそれぞれ有する複数の磁気コイルと、各磁気
コイルに励磁用電流を通電する励磁用電源とを備えた磁
気撹拌溶接装置において、前記の励磁用電源と磁気コイ
ルの間に電流調整手段を設けている。In order to achieve the above object, in the present invention, a welding torch having an arc welding electrode, and a welding power source for generating an arc between the arc welding electrode and a member to be welded are provided. In the magnetic stir welding apparatus, the magnetic welding machine includes a plurality of magnetic coils each having a core substantially parallel to the arc welding electrode, and an exciting power supply for supplying an exciting current to each magnetic coil. Current adjusting means is provided between the magnetic coils.
【００２６】また、磁気コイルを、アーク溶接用電極に
対して所定の距離を隔てて該アーク溶接用電極を周方向
に取り囲み且つ被溶接部材に近接するように配置した構
成とする。Further , the magnetic coil is arranged so as to surround the arc welding electrode in the circumferential direction with a predetermined distance from the arc welding electrode and to be close to the member to be welded.
【００２７】本発明の磁気撹拌溶接装置では、励磁用電
源から各磁気コイルに通電される励磁電流の電流値を電
流調整手段によって変化させ、各磁気コイルにより発生
する磁場の磁場強度を被溶接部材の板厚に応じて調整す
る。In the magnetic stir welding apparatus of the present invention, the current value of the exciting current supplied from the exciting power supply to each magnetic coil is changed by the current adjusting means, and the magnetic field strength of the magnetic field generated by each magnetic coil is changed to the member to be welded. Adjust according to the plate thickness of.
【００２８】また、アーク溶接用電極に対して所定の距
離を隔てて該アーク溶接用電極を周方向に取り囲み且つ
被溶接部材に近接するように、複数の磁気コイルを配置
し、各磁気コイルの温度上昇を抑制する。 Further, as at a predetermined distance for the arc welding electrode in proximity to and be welded member surrounds the arc welding electrode in the circumferential direction, arranging a plurality of magnetic coils, each magnetic coil Controls temperature rise.
【００２９】[0029]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しつつ説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００３０】図１は本発明の磁気撹拌溶接装置の実施の
形態の第１の例を示すものであり、図中、図５及び図６
と同一の符号を付した部分は同一物を表している。FIG. 1 shows a first example of the embodiment of the magnetic stir welding apparatus of the present invention .
The parts denoted by the same reference numerals as in FIG.
【００３１】図１に示す磁気撹拌溶接装置では、先に述
べた図５における励磁用電源４に替えて、該励磁用電源
４よりも電流値が大きい励磁電流を出力可能な励磁用電
源（交流電源）８を用い、各磁気コイル３と励磁用電源
８の各端子とを配線９ａ，９ｂを介して接続し、一方の
配線９ａに、励磁用電源８から磁気コイル３に通電され
る励磁電流の値を調整する可変抵抗器（電流調整手段）
１０を設けている。In the magnetic stir welding apparatus shown in FIG. 1, in place of the exciting power source 4 shown in FIG. 5 described above, an exciting power source (AC having a larger current value than the exciting power source 4) (AC Power source) 8 is used to connect each magnetic coil 3 to each terminal of the excitation power source 8 through wirings 9a and 9b, and one of the wirings 9a is supplied with an excitation current from the excitation power source 8 to the magnetic coil 3. Variable resistor to adjust the value of (current adjustment means)
10 is provided.
【００３２】以下、図１に示す磁気撹拌溶接装置の作動
を説明する。The operation of the magnetic stir welding apparatus shown in FIG. 1 will be described below.
【００３３】２つの被溶接部材７，７を突き合せ溶接に
よって接合する際には、先に述べた図５及び図６に示す
ものと同様に被溶接部材７，７及び移動機構６を配置し
て、溶接トーチ１の電極１ｃの先端部を被溶接部材７，
７の開先き加工部分の直上に位置させ、被溶接部材７，
７の端部に溶接用電源２のプラス端子を配線２ｂを介し
て接続する。When joining two members to be welded 7 by butt welding, the members to be welded 7, 7 and the moving mechanism 6 are arranged in the same manner as shown in FIGS. 5 and 6 described above . The tip of the electrode 1c of the welding torch 1 to be welded member 7,
7 is located directly above the grooved portion to be welded,
The positive terminal of the welding power source 2 is connected to the end of 7 through the wiring 2b.
【００３４】次いで、溶接トーチ１のガス流路１ｂから
アルゴンガス等の不活性ガスを噴射しながら、溶接用電
源２及びワイヤ送出機５ｃを作動させると、被溶接部材
７，７に溶接電流Ｉが流れて被溶接部材７，７の開先き
加工部分と電極１ｃの先端部との間にアークが生じると
ともに、このアークによって溶接用ワイヤ５ａが溶融
し、電極１ｃの略直下における被溶接部材７，７の開先
き加工部分の間に溶融金属層１１が形成される。Next, when the welding power source 2 and the wire feeder 5c are operated while injecting an inert gas such as argon gas from the gas flow path 1b of the welding torch 1, the welding current I is applied to the members to be welded 7, 7. Flows and an arc is generated between the grooved portions of the members to be welded 7, 7 and the tip of the electrode 1c, and the welding wire 5a is melted by this arc, and the member to be welded immediately below the electrode 1c. A molten metal layer 11 is formed between the beveled portions 7 and 7.
【００３５】一方、励磁用電源８から励磁電流を各磁気
コイル３に通電すると、該各磁気コイル３から被溶接部
材７，７の板厚方向に該被溶接部材７，７及び溶融金属
層１１を突き抜ける磁場Ｍが、溶接トーチ側から反溶接
トーチ側へ、あるいは反溶接トーチ側から溶接トーチ側
へ、励磁電流の周波数に応じて交互に発生し、溶接電流
Ｉにローレンツ力が作用することにより溶融金属層１１
が撹拌される。On the other hand, when an exciting current is supplied from the exciting power source 8 to the magnetic coils 3, the members 7 and 7 and the molten metal layer 11 to be welded from the magnetic coils 3 in the plate thickness direction of the members 7 and 7 to be welded. The magnetic field M penetrating through the welding torch side is generated alternately from the welding torch side to the anti-welding torch side or from the anti-welding torch side to the welding torch side according to the frequency of the exciting current, and the Lorentz force acts on the welding current I. Molten metal layer 11
Is stirred.
【００３６】更に、移動フレーム６ｄを移動させると、
被溶接部材７，７の開先き加工部分に沿って溶融金属層
１１が伸張するとともに該溶融金属層１１が逐次凝固
し、被溶接部材７，７が互いに接合される。Further, when the moving frame 6d is moved,
The molten metal layer 11 extends along the grooved portions of the members to be welded 7, 7 and the molten metal layer 11 is sequentially solidified so that the members to be welded 7, 7 are joined to each other.
【００３７】上述した溶接作業を実施するにあたって
は、被溶接部材７，７の板厚に対して各磁気コイル３に
通電される励磁電流が、図２に示すような関係となるよ
うに、可変抵抗器１０を調整しておく。In carrying out the above-mentioned welding work, the exciting currents applied to the magnetic coils 3 with respect to the plate thicknesses of the members to be welded 7, 7 are varied so as to have the relationship shown in FIG. Adjust the resistor 10.
【００３８】すなわち、被溶接部材７，７の板厚が厚い
場合には、抵抗値が低くなるように可変抵抗器１０を設
定しておく。That is, when the plate thickness of the members to be welded 7, 7 is large, the variable resistor 10 is set so that the resistance value becomes low.
【００３９】可変抵抗器１０の抵抗値が低くなると、励
磁用電源８から各磁気コイル３に通電される励磁電流の
電流値が高くなり、各磁気コイル３により発生する磁場
Ｍの磁場強度が被溶接部材７，７の板厚に応じて強くな
る。When the resistance value of the variable resistor 10 becomes low, the current value of the exciting current supplied from the exciting power supply 8 to each magnetic coil 3 becomes high, and the magnetic field strength of the magnetic field M generated by each magnetic coil 3 is increased. It becomes stronger according to the plate thickness of the welding members 7, 7.
【００４０】このように、図１に示す磁気撹拌溶接装置
においては、各磁気コイル３により発生する磁場Ｍの磁
場強度を調整できるので、被溶接部材７，７の板厚が厚
くなっても、溶融金属層１１をローレンツ力によって効
果的に撹拌することが可能になる。As described above, in the magnetic stir welding apparatus shown in FIG. 1, since the magnetic field strength of the magnetic field M generated by each magnetic coil 3 can be adjusted, even if the plate thickness of the members 7 and 7 to be welded becomes large, The molten metal layer 11 can be effectively stirred by the Lorentz force.
【００４１】よって、溶融金属層１１が凝固する際に超
音波探傷検査の妨げとなる柱状結晶が形成されず、被溶
接部材７，７の溶接継手に対する超音波探傷性を良好な
状態で行うことができる。Therefore, when the molten metal layer 11 is solidified, columnar crystals that hinder the ultrasonic flaw detection inspection are not formed, and the ultrasonic flaw detection of the welded joints of the members 7 and 7 to be welded should be performed in a good state. You can
【００４２】図３及び図４は本発明の磁気撹拌溶接装置
の実施の形態の第２の例を示すものであり、図中、図５
及び図６と同一の符号を付した部分は同一物を表してい
る。FIGS. 3 and 4 show a second example of the embodiment of the magnetic stir welding apparatus of the present invention, and FIG .
Also, the parts denoted by the same reference numerals as those in FIG. 6 represent the same things.
【００４３】図３及び図４に示す磁気撹拌溶接装置で
は、複数の磁気コイル３を、溶接トーチ１の電極１ｃの
外周面に対して所定の距離を隔てて該電極１ｃを周方向
に取り囲むとともに被溶接部材７，７に近接し且つ各磁
気コイル３のコア３ａが電極１ｃの軸線に平行となるよ
うに配置し、隣接する磁気コイル３，３をブラケット３
ｃによって互いに連結し、また、移動機構６の支持脚６
ｃに最も近い磁気コイル３をブラケット３ｄによって支
持脚６ｃに固定している。In the magnetic stir welding apparatus shown in FIGS. 3 and 4, a plurality of magnetic coils 3 are circumferentially surrounded by the electrode 1c of the welding torch 1 at a predetermined distance from the outer peripheral surface of the electrode 1c. The magnetic coils 3 are arranged so as to be close to the members to be welded 7, 7 and the core 3a of each magnetic coil 3 is parallel to the axis of the electrode 1c.
and the supporting legs 6 of the moving mechanism 6
The magnetic coil 3 closest to c is fixed to the support leg 6c by the bracket 3d.
【００４４】また、各磁気コイル３と励磁用電源８の各
端子とを配線９ａ，９ｂを介して接続し、一方の配線９
ａに、励磁用電源８から磁気コイル３に通電される励磁
電流の値を調整する可変抵抗器（電流調整手段）１０を
設けている。 Further , each magnetic coil 3 and each excitation power source 8
The terminal is connected via wiring 9a and 9b, and one wiring 9
a) Excitation that energizes the magnetic coil 3 from the excitation power supply 8
A variable resistor (current adjusting means) 10 for adjusting the value of the current
It is provided.
【００４５】以下、図３及び図４に示す磁気撹拌溶接装
置の作動を説明する。The operation of the magnetic stir welding apparatus shown in FIGS. 3 and 4 will be described below.
【００４６】２つの被溶接部材７，７を突き合せ溶接に
よって接合する際には、先に述べた図６及び図７に示す
ものと同様に被溶接部材７，７及び移動機構６を配置し
て、溶接トーチ１の電極１ｃの先端部を被溶接部材７，
７の開先き加工部分の直上に位置させ、被溶接部材７，
７の端部に溶接用電源２のプラス端子を配線２ｂを介し
て接続する。When the two members to be welded 7, 7 are joined by butt welding, the members to be welded 7, 7 and the moving mechanism 6 are arranged similarly to those shown in FIGS. 6 and 7 described above. The tip of the electrode 1c of the welding torch 1 to be welded member 7,
7 is located directly above the grooved portion to be welded,
The positive terminal of the welding power source 2 is connected to the end of 7 through the wiring 2b.
【００４７】次いで、溶接トーチ１のガス流路１ｂから
アルゴンガス等の不活性ガスを噴射しながら、溶接用電
源２及びワイヤ送出機５ｃを作動させると、被溶接部材
７，７の開先き加工部分と電極１ｃの先端部との間にア
ークが生じるとともに、このアークによって溶接用ワイ
ヤ５ａが溶融し、電極１ｃの略直下における被溶接部材
７，７の開先き加工部分の間に溶融金属層１１が形成さ
れる。Next, when the welding power source 2 and the wire feeder 5c are operated while injecting an inert gas such as argon gas from the gas flow path 1b of the welding torch 1, the welded members 7, 7 are beveled. An arc is generated between the processed part and the tip part of the electrode 1c, and the welding wire 5a is melted by this arc, and melted between the groove-processed parts of the members to be welded 7, 7 substantially directly below the electrode 1c. The metal layer 11 is formed.
【００４８】一方、励磁用電源４から励磁電流を各磁気
コイル３に通電すると、該各磁気コイル３から被溶接部
材７，７の板厚方向に該被溶接部材７，７及び溶融金属
層１１を突き抜ける磁場Ｍが、溶接トーチ側から反溶接
トーチ側へ、あるいは反溶接トーチ側から溶接トーチ側
へ、励磁電流の周波数に応じて交互に発生し、溶接電流
Ｉにローレンツ力が作用することにより溶融金属層１１
が撹拌される。On the other hand, when an exciting current is applied to each magnetic coil 3 from the exciting power source 4, the welded members 7, 7 and the molten metal layer 11 are passed from the magnetic coils 3 in the plate thickness direction of the welded members 7, 7. The magnetic field M penetrating through the welding torch side is generated alternately from the welding torch side to the anti-welding torch side or from the anti-welding torch side to the welding torch side according to the frequency of the exciting current, and the Lorentz force acts on the welding current I. Molten metal layer 11
Is stirred.
【００４９】更に、移動フレーム６ｄを移動させると、
被溶接部材７，７の開先き加工部分に沿って溶融金属層
１１が伸張するとともに該溶融金属層１１が逐次凝固
し、被溶接部材７，７が互いに接合される。Further, when the moving frame 6d is moved,
The molten metal layer 11 extends along the grooved portions of the members to be welded 7, 7 and the molten metal layer 11 is sequentially solidified so that the members to be welded 7, 7 are joined to each other.
【００５０】このとき、溶接トーチ１から離れた位置に
被溶接部材７，７に近接するように各磁気コイル３が配
置されているので、アークによる各磁気コイル３の温度
上昇が抑制され、該各磁気コイル３により発生する磁場
Ｍの磁場強度の低下が防止される。At this time, since the magnetic coils 3 are arranged at positions away from the welding torch 1 so as to be close to the members to be welded 7, 7, the temperature rise of the magnetic coils 3 due to the arc is suppressed, The magnetic field strength of the magnetic field M generated by each magnetic coil 3 is prevented from decreasing.
【００５１】このように、図３及び図４に示す磁気撹拌
溶接装置においては、各磁気コイル３により発生する磁
場Ｍの磁場強度が低下せず、また、可変抵抗器１０によ
り磁場Ｍの磁場強度を調整できるので、板厚が厚い被溶
接部材７，７の溶接作業を連続的に行っても、溶融金属
層１１をローレンツ力によって効果的に撹拌することが
可能になる。As described above, in the magnetic stir welding apparatus shown in FIGS. 3 and 4, the magnetic field strength of the magnetic field M generated by each magnetic coil 3 does not decrease , and the variable resistor 10 is used.
As the magnetic field strength of the magnetic field M can be adjusted,
Even if the welding work of the contact members 7, 7 is continuously performed, the molten metal layer 11 can be effectively stirred by the Lorentz force.
【００５２】よって、溶融金属層１１が凝固する際に超
音波探傷検査の妨げとなる柱状結晶が形成されず、被溶
接部材７，７の溶接継手に対する超音波探傷性を良好な
状態で実施することができる。Therefore, when the molten metal layer 11 is solidified, columnar crystals that hinder the ultrasonic flaw detection inspection are not formed, and the ultrasonic flaw detection of the welded joints of the members 7 and 7 to be welded is performed in a good state. be able to.
【００５３】[0053]
【００５４】[0054]
【００５５】[0055]
【００５６】[0056]
【００５７】なお、本発明の磁気撹拌溶接装置は上述し
た実施の形態のみに限定されるものではなく、本発明の
要旨を逸脱しない範囲において種々変更を加え得ること
は勿論である。The magnetic stir welding apparatus of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention.
【００５８】[0058]
【発明の効果】以上述べたように、本発明の磁気撹拌溶
接装置においては、下記のような種々の優れた効果を奏
し得る。As described above, the magnetic stir welding apparatus of the present invention can exhibit various excellent effects as described below.
【００５９】本発明の請求項１あるいは請求項２に記載
した磁気撹拌溶接装置のいずれにおいても、励磁用電源
から各磁気コイルに通電される励磁電流の電流値を電流
調整手段によって変化させ、各磁気コイルにより発生す
る磁場の磁場強度を被溶接部材の板厚に応じて調整する
ので、被溶接部材の板厚が厚くなっても、被溶接部材に
形成される溶融金属層をローレンツ力によって効果的に
撹拌することが可能になり、よって、前記溶融金属層が
凝固する際に超音波探傷検査の妨げとなる柱状結晶が形
成されず、被溶接部材の溶接継手に対する超音波探傷性
を良好な状態で行うことができる。 According to claim 1 or claim 2 of the present invention
In any of the magnetic stirring welding devices described above, the current value of the exciting current supplied from the exciting power source to each magnetic coil is changed by the current adjusting means, and the magnetic field strength of the magnetic field generated by each magnetic coil is changed to the plate of the member to be welded. Since it is adjusted according to the thickness, even if the plate thickness of the member to be welded becomes thick, it becomes possible to effectively stir the molten metal layer formed on the member to be welded by the Lorentz force. When the layer is solidified, columnar crystals that hinder the ultrasonic flaw detection inspection are not formed, and the ultrasonic flaw detection property for the welded joint of the member to be welded can be performed in a good state.
【００６０】[0060]
【図１】本発明の磁気撹拌溶接装置の実施の形態の第１
の例を示す部分切断正面図である。FIG. 1 is a first embodiment of the magnetic stir welding apparatus of the present invention.
It is a partial cut front view showing an example of.
【図２】本発明の磁気撹拌溶接装置の実施の形態の第１
の例を使用する際における被溶接部材の板厚と磁気コイ
ルに通電する励磁電流との関係を示すグラフである。FIG. 2 is a first embodiment of the magnetic stir welding apparatus of the present invention.
6 is a graph showing the relationship between the plate thickness of the member to be welded and the exciting current supplied to the magnetic coil when the example of FIG.
【図３】本発明の磁気撹拌溶接装置の実施の形態の第２
の例を示す部分切断正面図である。FIG. 3 is a second embodiment of the magnetic stir welding apparatus of the present invention.
It is a partial cut front view showing an example of.
【図４】本発明の磁気撹拌溶接装置の実施の形態の第２
の例を示す部分切断平面図である。FIG. 4 is a second embodiment of the magnetic stir welding apparatus of the present invention.
FIG. 6 is a partially cut plan view showing an example of FIG.
【図５】従来の磁気撹拌溶接装置の一例を示す部分切断
正面図である。 FIG. 5: Partial cutting showing an example of a conventional magnetic stirring welding device
It is a front view.
【図６】従来の磁気撹拌溶接装置の一例を示す部分切断
平面図である。 FIG. 6 Partial cutting showing an example of a conventional magnetic stir welding apparatus
It is a top view.
１溶接トーチ １ｃ電極（アーク溶接用電極） ２溶接用電源 ３磁気コイル ３ａコア ４励磁用電源 ７被溶接部材 １０可変抵抗器（電流調整手段） 1 welding torch 1c electrode (electrode for arc welding) 2 welding power source 3 magnetic coils 3a core 4 Excitation power supply 7 Welded member 10 variable resistor (current adjusting means)
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 9/08 B23K 9/167 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) B23K 9/08 B23K 9/167
Claims (2)
と、アーク溶接用電極と被溶接部材との間にアークを発
生させる溶接用電源と、前記のアーク溶接用電極と略平
行なコアをそれぞれ有する複数の磁気コイルと、各磁気
コイルに励磁用電流を通電する励磁用電源とを備えた磁
気撹拌溶接装置において、前記の励磁用電源と磁気コイ
ルの間に電流調整手段を設けたことを特徴とする磁気撹
拌溶接装置。1. A welding torch having an arc welding electrode, a welding power source for generating an arc between the arc welding electrode and a member to be welded, and a core substantially parallel to the arc welding electrode. In a magnetic stir welding apparatus including a plurality of magnetic coils and an excitation power supply that supplies an excitation current to each magnetic coil, a current adjusting unit is provided between the excitation power supply and the magnetic coils. Magnetic stir welding equipment to do.
と、アーク溶接用電極と被溶接部材との間にアークを発
生させる溶接用電源と、前記のアーク溶接用電極と略平
行なコアをそれぞれ有する複数の磁気コイルと、各磁気
コイルに励磁用電流を通電する励磁用電源とを備えた磁
気撹拌溶接装置において、前記の磁気コイルを、アーク
溶接用電極に対して所定の距離を隔てて該アーク溶接用
電極を周方向に取り囲み且つ被溶接部材に近接するよう
に配置し、前記の励磁用電源と磁気コイルの間に電流調
整手段を設けたことを特徴とする磁気撹拌溶接装置。2. A welding torch having an arc welding electrode, a welding power source for generating an arc between the arc welding electrode and a member to be welded, and a core substantially parallel to the arc welding electrode. In a magnetic stir welding apparatus comprising a plurality of magnetic coils and an excitation power supply for supplying an excitation current to each magnetic coil, the magnetic coils are separated from the arc welding electrode by a predetermined distance. The welding electrode is arranged so as to surround it in the circumferential direction and to be close to the member to be welded, and to adjust the current between the excitation power source and the magnetic coil.
A magnetic stir welding apparatus, characterized in that it is provided with an adjusting means .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18703995A JP3473195B2 (en) | 1995-07-24 | 1995-07-24 | Magnetic stir welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18703995A JP3473195B2 (en) | 1995-07-24 | 1995-07-24 | Magnetic stir welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0929432A JPH0929432A (en) | 1997-02-04 |
| JP3473195B2 true JP3473195B2 (en) | 2003-12-02 |
Family
ID=16199111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18703995A Expired - Fee Related JP3473195B2 (en) | 1995-07-24 | 1995-07-24 | Magnetic stir welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3473195B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100340639B1 (en) * | 1997-12-20 | 2002-07-18 | 이구택 | Control method of welding Arc using induction coil |
| KR100308542B1 (en) * | 1999-07-09 | 2001-11-01 | 정기형 | High power helical arc switch |
| DE10104608A1 (en) * | 2001-02-02 | 2002-08-08 | Bosch Gmbh Robert | Ultrasonic sensor for process control in resistance spot welding |
| CN107745175A (en) * | 2017-10-12 | 2018-03-02 | 昆山华恒焊接股份有限公司 | Electric arc welding method and electric arc welding equipment |
| CN109909593B (en) * | 2019-03-19 | 2024-01-30 | 昆山华恒焊接股份有限公司 | External magnetic control arc swinging device |
-
1995
- 1995-07-24 JP JP18703995A patent/JP3473195B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0929432A (en) | 1997-02-04 |
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