JPH0623551A - Welding current control method for plural electrode high-speed rotating arc - Google Patents
Welding current control method for plural electrode high-speed rotating arcInfo
- Publication number
- JPH0623551A JPH0623551A JP17987092A JP17987092A JPH0623551A JP H0623551 A JPH0623551 A JP H0623551A JP 17987092 A JP17987092 A JP 17987092A JP 17987092 A JP17987092 A JP 17987092A JP H0623551 A JPH0623551 A JP H0623551A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- consumable electrode
- arc
- current
- welding current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、２個の消耗電極ワイヤ
を用い、同時に２つのアークを発生・同期回転させなが
ら溶接する複数電極高速回転アーク溶接方法におけるパ
ルス溶接電流を位相同期制御する複数電極高速回転アー
クの溶接電流制御方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiple electrode high speed rotary arc welding method in which two consumable electrode wires are used to perform welding while simultaneously generating and synchronously rotating two arcs. The present invention relates to a welding current control method for an electrode high speed rotating arc.
【０００２】[0002]
【従来の技術】消耗電極ワイヤ（以下、溶接ワイヤとい
う）と被溶接部材との間に発生するアークにより溶接す
るアーク溶接方法で、高能率溶接のために図８に示すよ
うに一本の溶接ワイヤ１に大電流を流す場合にはアーク
力Ｐが溶融池ＷＰの一箇所に集中するために溶接ビード
ＷＢのビード形状が悪く、溶接品質に問題があった。１
０はアーク、Ｍは被溶接部材である。2. Description of the Related Art An arc welding method for welding by an arc generated between a consumable electrode wire (hereinafter referred to as a welding wire) and a member to be welded. For high efficiency welding, as shown in FIG. When a large current is passed through the wire 1, the arc force P is concentrated at one location of the molten pool WP, and thus the bead shape of the weld bead WB is poor and there is a problem with the welding quality. 1
0 is an arc and M is a member to be welded.
【０００３】そこで、溶接ワイヤと被溶接部材との間に
発生するアークを回転円運動させながら溶接する高速回
転アーク溶接方法が考えられるに至った（特公昭６３−
３９３４６号）。そして、この回転アークを実現するた
めの方式として、例えば特開昭６２−２４８５７１号公
報に示す溶接ワイヤが通る電極ノズルを回転させるもの
がある。この方式による溶接トーチの概要を図９に示
す。Therefore, a high-speed rotary arc welding method has been conceived in which the arc generated between the welding wire and the member to be welded is welded while rotating circularly (Japanese Patent Publication No. Sho 63-63).
39346). As a method for realizing this rotating arc, for example, there is a method of rotating an electrode nozzle through which a welding wire passes, which is disclosed in Japanese Patent Laid-Open No. 62-248571. The outline of the welding torch by this system is shown in FIG.
【０００４】すなわち、この構造は溶接ワイヤが通る電
極ノズル２の中間部を、回転運動するギヤ３の中心より
所定の距離だけ偏心させた位置にて自動調心ベアリング
７により回転自在に支持するとともに、電極ノズル２の
上部を支点４（図示しない自動調心ベアリングにより支
点４を構成する）として支持する構成としたものであ
り、上記ギヤ３を回転モータ８、ギヤ機構９により矢印
６に示す方向に回転させれば、電極ノズル２の先端から
突出している溶接ワイヤ１の先端に発生するアーク１０
を円運動させることができる。That is, this structure rotatably supports the intermediate portion of the electrode nozzle 2 through which the welding wire is passed by the self-aligning bearing 7 at a position eccentric from the center of the rotating gear 3 by a predetermined distance. , The upper portion of the electrode nozzle 2 is supported as a fulcrum 4 (the fulcrum 4 is constituted by a self-aligning bearing (not shown)), and the gear 3 is rotated by a rotary motor 8 and a gear mechanism 9 in a direction indicated by an arrow 6. Arc 10 generated at the tip of the welding wire 1 protruding from the tip of the electrode nozzle 2
Can be moved circularly.
【０００５】このような回転アーク溶接方法によると、 アーク力、アーク熱の分散によりビード形状、溶け込
み形状の偏平化が図れ、ビード形状が良好となる。 回転の遠心力により溶接ワイヤの溶接速度が増加し、
アークを回転させない場合に比べ、高能率になる。 隅肉溶接や開先のある溶接において、溶接電流・アー
ク電圧の波形を利用したアークセンサ式溶接線倣い制御
ができる。などの特長がある。According to such a rotary arc welding method, the bead shape and the melted shape can be flattened by the dispersion of the arc force and the arc heat, and the bead shape becomes good. The centrifugal force of rotation increases the welding speed of the welding wire,
The efficiency is higher than when the arc is not rotated. In fillet welding and welding with a groove, it is possible to perform arc sensor type welding line tracing control using the waveforms of welding current and arc voltage. There are features such as.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
回転アーク溶接方法では溶接ワイヤが１本であるから、
溶接電流を大きくすれば、入熱が多くなって片面突合せ
溶接の場合には梨割れが発生するという問題点があっ
た。However, since the conventional rotary arc welding method uses only one welding wire,
If the welding current is increased, the heat input is increased, and in the case of single-sided butt welding, there is a problem that pear cracks occur.
【０００７】そこで、複数の溶接ワイヤとすることが考
えられるが、この場合にはアークの磁気吹きが発生する
おそれがあり、このためアークが不安定になってスパッ
タ発生量が増加するという新たな問題が生じた。Therefore, it is conceivable to use a plurality of welding wires. In this case, however, there is a risk that magnetic arcing of the arc may occur, which makes the arc unstable and increases the spatter generation amount. There was a problem.
【０００８】本発明は、上記のような課題を解決するた
めになされたもので、高速回転アーク溶接方法の利点を
保ちつつ、磁気吹きの発生を減少させ、スパッタの少な
い高速・高能率の溶接を可能とする複数電極高速回転ア
ークの電流制御方法を提供することを目的とする。The present invention has been made to solve the above-mentioned problems, and while maintaining the advantages of the high-speed rotating arc welding method, it reduces the occurrence of magnetic blow and produces high-speed, high-efficiency welding with less spatter. It is an object of the present invention to provide a current control method for a multi-electrode high-speed rotating arc that enables the above.
【０００９】[0009]
【課題を解決するための手段】本発明に係る複数電極高
速回転アークの溶接電流制御方法は互いに隣接して配置
された複数の消耗電極ワイヤを同一の回転方向及び回転
速度で同期回転させながら溶接する複数電極高速回転ア
ーク溶接方法において、各々の消耗電極ワイヤの１回転
当りに流すパルス状の溶接電流のパルス数をそれぞれ同
数とし、且つこれら消耗電極ワイヤに流す溶接電流の位
相を互いに逆にしたものである。SUMMARY OF THE INVENTION A welding current control method for a multi-electrode high-speed rotating arc according to the present invention welds a plurality of consumable electrode wires arranged adjacent to each other while synchronously rotating them in the same rotation direction and rotation speed. In the multi-electrode high-speed rotary arc welding method, the number of pulses of the pulsed welding current flowing per revolution of each consumable electrode wire is made equal, and the phases of the welding currents flowing to these consumable electrode wires are made opposite to each other. It is a thing.
【００１０】この場合に、溶接進行方向に直列に配置さ
れた先行と後行の二つの消耗電極ワイヤにそれぞれ流す
溶接電流の位相をピーク値が交互にくるように逆にし、
先行の消耗電極ワイヤの溶接電流の平均値を後行の消耗
電極ワイヤの溶接電流の平均値よりも大きく設定するよ
うにしてもよい。In this case, the phases of the welding currents respectively applied to the two consumable electrode wires, which are the leading and trailing consumable electrode wires arranged in series in the welding proceeding direction, are reversed so that the peak values alternate with each other,
The average value of the welding current of the preceding consumable electrode wire may be set to be larger than the average value of the welding current of the subsequent consumable electrode wire.
【００１１】また、溶接進行方向に直列に配置された先
行と後行の二つの消耗電極ワイヤにそれぞれ流す溶接電
流の位相をピーク値が１／２周期毎に交互にくるように
逆にすることもできる。Further, the phases of the welding currents respectively flowing through the two consumable electrode wires, which are the leading and trailing consumable electrode wires, which are arranged in series in the welding advancing direction, are reversed so that the peak values alternate every ½ cycle. You can also
【００１２】[0012]
【作用】本発明においては、互いに隣接して配置された
複数の消耗電極ワイヤを同一の回転方向及び回転速度で
同期回転させながら溶接する場合に、各々の消耗電極ワ
イヤの１回転当りに流すパルス溶接電流のパルス数をそ
れぞれ同数とし、且つこれら消耗電極ワイヤに流す溶接
電流の位相を互いに逆にしたから、磁気吹きを生じさせ
る原因となる電磁吸引力に比例する二つのアークに流れ
る溶接電流の積は位相が同期させられている場合に比べ
て小さく抑えられるために磁気吹きによるスパッタ発生
量は減少する。According to the present invention, when a plurality of consumable electrode wires arranged adjacent to each other are welded while being synchronously rotated in the same rotation direction and rotational speed, a pulse is applied per revolution of each consumable electrode wire. Since the number of pulses of the welding current is the same and the phases of the welding currents flowing through these consumable electrode wires are opposite to each other, the welding currents flowing through the two arcs that are proportional to the electromagnetic attraction force that causes magnetic spraying Since the product is suppressed to be smaller than that in the case where the phases are synchronized, the amount of spatter generated by the magnetic spray is reduced.
【００１３】また、溶接進行方向に直列に配置された先
行と後行の二つの消耗電極ワイヤにそれぞれ流す溶接電
流の位相をピーク値が交互にくるように逆にし、先行の
消耗電極ワイヤの溶接電流の平均値を後行の消耗電極ワ
イヤの溶接電流の平均値よりも大きく設定することによ
り、磁気吹きの発生が減少させられると共にアークが安
定する先行の消耗電極ワイヤ側の溶接電流が大きいため
に良好なビード形状が得られる。Further, the phases of the welding currents respectively supplied to the two consumable electrode wires, the preceding and the following, which are arranged in series in the welding advancing direction, are reversed so that the peak values alternate, and the welding of the preceding consumable electrode wires is performed. By setting the average value of the current to be larger than the average value of the welding current of the consumable electrode wire that follows it, the occurrence of magnetic blow is reduced and the arc is stabilized. A very good bead shape can be obtained.
【００１４】更に、溶接進行方向に直列に配置された先
行と後行の消耗電極ワイヤにそれぞれ流す溶接電流の位
相をピーク値が１／２周期毎に交互にくるように逆にす
ることにより、先行と後行の消耗電極ワイヤに交互に溶
接電流が流れることとなって１本の消耗電極ワイヤだけ
に溶接電流を流すのとほぼ同じ状態となり、磁気吹きの
発生が大幅に減少する。Furthermore, by inverting the phases of the welding currents respectively flowing through the consumable electrode wires of the leading and trailing electrodes arranged in series in the welding advancing direction so that the peak values alternate every ½ cycle, The welding current flows alternately through the leading and trailing consumable electrode wires, which is almost the same as when the welding current is passed through only one consumable electrode wire, and the occurrence of magnetic blow is greatly reduced.
【００１５】[0015]
【実施例】図１は本発明方法に用いられるツインワイヤ
回転アークトーチを示す断面正面図、図２は２本の溶接
ワイヤによる溶接状態を示す説明図、図３は溶融池の上
方に位置する２本の溶接ワイヤの回転軌跡を示す説明
図、図４は溶接進行方向における溶接ワイヤの回転位置
を示す説明図、図５は２本の溶接ワイヤの回転位置とこ
れらに流れる溶接電流の波形との関係を示す波形図であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional front view showing a twin wire rotary arc torch used in the method of the present invention, FIG. 2 is an explanatory view showing a welding state by two welding wires, and FIG. 3 is located above a molten pool. FIG. 4 is an explanatory view showing the rotational locus of the welding wire, FIG. 4 is an explanatory view showing the rotational position of the welding wire in the welding advancing direction, and FIG. 5 is a rotational position of the two welding wires and the waveform of the welding current flowing through them. It is a wave form diagram which shows a relationship.
【００１６】図１におけるツインワイヤ回転アークトー
チは、ギヤ３及び回転体１５を回転モータ８、駆動ギヤ
９ｂにより回転させると、電極ノズル２は上端を支点４
（絶縁製ブシュ１２及び自動調心ベアリング１３で構成
されている）として、中間部が偏心リング１９により回
転中心軸５の周りに所定の偏心量ｅでもって自転するこ
となく円運動する。つまり、電極ノズル２の先端は上端
を支点４として、回転運動をする。このような回転運動
をする電極ノズル２にその中心より偏心した位置で２本
の溶接ワイヤ１をコンジットチューブ２１により案内さ
せて通しているので、通電チップ２２から突き出してい
る溶接ワイヤ１の先端は回転中心軸５の周りに自転する
ことなく図４に示すように円運動する。したがって、各
溶接ワイヤ１の先端から同時に発生しているアークは同
一の回転方向、回転速度で同期回転する。この溶接トー
チを上記のように回転させながら溶接線上を進行させる
と、その回転アークはループ状の軌跡を描く。即ちこの
溶接トーチは図２及び図３に示すように先行電極Ｌと後
行電極Ｔとなる二つの溶接ワイヤ１を同一の回転方向及
び回転速度で同期回転させることができるものである。
なお、電極ノズル２は、２本の溶接ワイヤ１を互いに絶
縁する機構になっている。In the twin wire rotary arc torch shown in FIG. 1, when the gear 3 and the rotary body 15 are rotated by the rotary motor 8 and the drive gear 9b, the electrode nozzle 2 has the upper end as a fulcrum 4.
As the (composed of the insulating bush 12 and the self-aligning bearing 13), the middle part of the eccentric ring 19 makes a circular motion around the rotation center axis 5 with a predetermined eccentric amount e without rotating. That is, the tip of the electrode nozzle 2 makes a rotary motion with the upper end as the fulcrum 4. Since the two welding wires 1 are guided by the conduit tube 21 and passed through the electrode nozzle 2 which makes such a rotational movement at a position eccentric from the center thereof, the tip of the welding wire 1 protruding from the current-carrying tip 22 is As shown in FIG. 4, it makes a circular motion without rotating around the rotation center axis 5. Therefore, the arcs simultaneously generated from the tips of the welding wires 1 rotate synchronously in the same rotation direction and rotation speed. When this welding torch is advanced on the welding line while rotating as described above, the rotating arc draws a loop-shaped locus. That is, this welding torch can synchronously rotate the two welding wires 1 serving as the leading electrode L and the trailing electrode T in the same rotating direction and rotating speed as shown in FIGS.
The electrode nozzle 2 has a mechanism for insulating the two welding wires 1 from each other.
【００１７】次に、上述した図１に示すツインワイヤ回
転アークトーチを用いて本発明方法を実施する場合につ
いて説明する。ツインワイヤ回転アークトーチの各溶接
ワイヤ１を下記に示す回転条件で回転させてアーク溶接
を行う。 回転速度：Ｎ＝３０〜５００Ｈｚ 回転直径：Ｄ＝１〜６ｍｍ 電極間距離：ｄ＝５〜１００ｍｍNext, the case where the method of the present invention is carried out by using the twin wire rotary arc torch shown in FIG. 1 will be described. Arc welding is performed by rotating each welding wire 1 of the twin wire rotary arc torch under the rotation conditions shown below. Rotation speed: N = 30 to 500 Hz Rotation diameter: D = 1 to 6 mm Distance between electrodes: d = 5 to 100 mm
【００１８】このとき、二つの溶接ワイヤ１は上述した
如く同一の回転方向及び回転速度で同期回転している。
また、先行電極Ｌと後行電極Ｔとなる二つの溶接ワイヤ
１，１には図５に示すようなパルス状の溶接電流を流し
て溶接を行う。At this time, the two welding wires 1 are synchronously rotated in the same rotational direction and rotational speed as described above.
In addition, welding is performed by applying a pulsed welding current as shown in FIG. 5 to the two welding wires 1 and 1 serving as the leading electrode L and the trailing electrode T.
【００１９】即ち、先行電極Ｌにはピーク電流ＩP が８
００Ａ、ベース電流ＩB が２００Ａ、平均電流ＩAVが５
００Ａ、ｔP （ピーク時間）：ｔB （ベース時間）＝
１：１で、溶接ワイヤ１の１回転当り１パルスの溶接電
流を、図５に示す回転前方Ｃｆ側の２７０°〜９０°の
１８０°の角度範囲にピーク電流ＩP 、回転後方Ｃｒ側
の９０°〜２７０°の１８０°の角度範囲にベース電流
ＩB が位置するように流す。後行電極Ｔにはピーク電流
ＩP が５００Ａ、ベース電流ＩB が１００Ａ、平均電流
ＩAVが３００Ａ、ｔP （ピーク時間）：ｔB （ベース時
間）＝１：１で、溶接ワイヤ１の１回転当り１パルスの
溶接電流を図５に示す回転前方Ｃｆ側の２７０°〜９０
°の１８０°の角度範囲にベース電流ＩB 、回転後方Ｃ
ｒ側の９０°〜２７０°の１８０°の角度範囲にピーク
電流ＩP が位置するよう流す。That is, the peak current I P is 8 in the leading electrode L.
00A, base current I B is 200A, average current I AV is 5
00A, t P (peak time): t B (base time) =
1: 1, the welding current of one rotation per one pulse of the welding wire 1, 180 ° angle range peak current I P of 270 ° to 90 ° of rotation front Cf side shown in FIG. 5, the rotating rear Cr side The base current I B is flowed so as to be positioned in the 180 ° angle range of 90 ° to 270 °. In the trailing electrode T, the peak current I P is 500 A, the base current I B is 100 A, the average current I AV is 300 A, t P (peak time): t B (base time) = 1: 1, and the welding wire 1 A welding current of 1 pulse per rotation is shown in FIG.
Base current I B , rotation backward C in the 180 ° angle range
The peak current I P is caused to flow in the angle range of 180 ° of 90 ° to 270 ° on the r side.
【００２０】このように、溶接進行方向ＷＤに直列に配
置された先行と後行の二つの電極Ｌ，Ｔにそれぞれ流す
パルス状の溶接電流の位相をピーク電流ＩP が交互にく
るようにずらせることにより、磁気吹きを生じさせる原
因となる電磁吸引力に影響を与える二つのアークに流れ
る溶接電流の積はピーク電流ＩP が互いに同期している
場合に比べて小さく抑えられるため、磁気吹きの発生は
減少させられる。As described above, the phases of the pulse-shaped welding currents respectively applied to the two electrodes L and T of the leading and trailing electrodes arranged in series in the welding advancing direction WD are shifted so that the peak currents I P alternate. By doing so, the product of the welding currents flowing in the two arcs that affects the electromagnetic attraction force that causes the magnetic blow is suppressed to be smaller than that in the case where the peak currents I P are synchronized with each other. The occurrence of is reduced.
【００２１】また、先行電極Ｌの溶接電流の平均値ＩAV
が後行電極Ｔの溶接電流の平均値ＩAVよりも大きく設定
されているため、良好なビード形状が得られる。Further, the average value I AV of the welding current of the leading electrode L
Is set to be larger than the average value I AV of the welding current of the trailing electrode T, so that a good bead shape can be obtained.
【００２２】次に、先行電極Ｌと後行電極Ｔとなる二つ
の溶接ワイヤ１，１に図６に示すようなパルス状の溶接
電流を流して溶接を行う。即ち、先行電極Ｌにはピーク
電流ＩP が１０００Ａ、ベース電流がＩB が３３３Ａ、
平均電流ＩAVが５００Ａ、ｔP ：ｔB ＝１：３で、溶接
ワイヤ１の１回当り１パルスの溶接電流を、回転前方Ｃ
ｆ側の３１５°〜４５°の９０°の角度範囲にピーク電
流ＩP 、ピーク電流ＩP の角度範囲以外の角度範囲にベ
ース電流ＩB が位置するように流す。後行電極Ｔにはピ
ーク電流ＩP が６００Ａ、ベース電流ＩB が２００Ａ、
平均電流３００Ａ、ｔP ：ｔB ＝１：３で、溶接ワイヤ
１の１回当り１パルスの溶接電流を、回転後方Ｃｒ側の
１３５°〜２４５°の角度範囲にピーク電流ＩP 、ピー
ク電流ＩP の角度範囲以外の角度範囲にベース電流ＩB
が位置するように流す。なお、先行電極ＬのＩAVと後行
電極ＴのＩAVの溶接電流比は０．６〜０．７である。Next, welding is performed by applying a pulsed welding current as shown in FIG. 6 to the two welding wires 1 and 1 serving as the leading electrode L and the trailing electrode T. That is, the leading electrode L has a peak current I P of 1000 A and a base current I B of 333 A,
When the average current I AV is 500 A and t P : t B = 1: 3, the welding current of 1 pulse per one time of the welding wire 1 is rotated forward C
peak angle range of 90 ° the f side of 315 ° to 45 ° current I P, the angle range other than the angle range of the peak current I P is the base current I B flows so as to be located. The trailing electrode T has a peak current I P of 600 A and a base current I B of 200 A,
With an average current of 300 A, t P : t B = 1: 3, a welding current of 1 pulse per one time of the welding wire 1 was generated in the angle range of 135 ° to 245 ° on the rear side of the rotation peak current I P , peak current. Base current I B in an angle range other than the angle range of I P
So that it is positioned. The welding current ratio of I AV of the leading electrode L and I AV of the trailing electrode T is 0.6 to 0.7.
【００２３】このように、溶接進行方向ＷＤに直列に配
置された先行と後行の二つの電極Ｌ，Ｔにそれぞれ流す
パルス状の溶接電流の位相をピーク電流ＩP が１／２周
期毎に交互にくるようにずらせることにより、アーク１
回転当たり、先行と後行の電極Ｌ，Ｔに交互に溶接電流
が流れることとなって１本の溶接ワイヤに溶接電流を流
すのと同じ状態となり、磁気吹きの発生が大幅に減少さ
せられることとなる。As described above, the phase of the pulse-shaped welding current flowing through the two electrodes L and T of the leading and trailing electrodes arranged in series in the welding advancing direction WD represents the phase of the peak current I P every ½ cycle. Arc 1 by shifting to alternate
During the rotation, the welding current flows alternately between the leading and trailing electrodes L and T, which is the same state as the welding current is passed through one welding wire, and the occurrence of magnetic blow is greatly reduced. Becomes
【００２４】上記図６に示す実施例では各溶接ワイヤ１
の１回転当り１パルスの溶接電流が流れる例を示した
が、図７の（ａ）に示すように、各溶接ワイヤ１の１回
転当り２パルスの溶接電流を流し、先行電極Ｌと後行電
極Ｔとに流す溶接電流のピーク電流ＩP が交互にくるよ
うずらせたり、図７の（ｂ）に示すように各溶接ワイヤ
１の１回転当り４パルスの溶接電流を流し、先行電極Ｌ
と後行電極Ｔとに流す溶接電流のピーク電流ＩP が交互
にくるようにずらせるようにしたりしても、上記実施例
と同様の作用・効果を有することは勿論である。In the embodiment shown in FIG. 6, each welding wire 1 is used.
Although an example in which a welding current of 1 pulse per 1 rotation flows was shown, as shown in FIG. 7 (a), a welding current of 2 pulses per 1 rotation of each welding wire 1 was flowed to lead electrode L and trailing electrode. or shifted to the peak current I P of the welding current flowing through the electrode T comes alternately flowing a welding current of one rotation per four pulses of the welding wire 1 as shown in FIG. 7 (b), the leading electrode L
Of course, even if the peak currents I P of the welding currents supplied to the and the trailing electrodes T are alternately shifted, the same actions and effects as those of the above-mentioned embodiment can be obtained.
【００２５】また、上述した実施例ではいずれも先行電
極Ｌと後行電極Ｔとを同一の回転方向及び回転速度で同
期回転させるため、図１に示すツインワイヤ回転アーク
トーチを用いて行っているが、これに限るものでなく、
互いに隣接して配置された二つの電極を同一の回転方向
及び回転速度で同期回転させるものであれば、本発明方
法を実施しうることはいうまでもない。In each of the above-described embodiments, the twin electrode rotary arc torch shown in FIG. 1 is used to rotate the leading electrode L and the trailing electrode T synchronously in the same rotation direction and rotation speed. However, it is not limited to this,
It goes without saying that the method of the present invention can be carried out as long as two electrodes arranged adjacent to each other are synchronously rotated in the same rotation direction and rotation speed.
【００２６】更に、上述した実施例では回転する電極が
二つの場合を比べたが二つ以上の電極を用いても、これ
ら電極に流す溶接電流の位相が互いにずらされていれ
ば、本発明方法が適用されることも勿論である。Further, in the above-mentioned embodiment, the case where the number of rotating electrodes is two is compared, but even if two or more electrodes are used, if the phases of the welding currents applied to these electrodes are shifted from each other, the method of the present invention will be described. Of course, is also applied.
【００２７】[0027]
【発明の効果】本発明は以上説明したとおり、互いに隣
接して配置された複数の消耗電極ワイヤを同一の回転方
向及び回転速度で同期回転させながら溶接する場合に、
各々の消耗電極ワイヤの１回転当りに流すパルス状の溶
接電流のパルス数をそれぞれ同数とし、且つこれら消耗
電極ワイヤに流す溶接電流の位相を互いにずらせるよう
にしたから、磁気吹きを生じさせる原因となる電磁吸引
力に影響を与える二つのアークに流れる溶接電流の積は
位相が同期させられている場合に比べて小さく抑えられ
るために磁気吹きの発生は減少し、大電流で高能率に安
定した溶接が行えるという効果を有する。As described above, according to the present invention, when a plurality of consumable electrode wires arranged adjacent to each other are welded while being synchronously rotated in the same rotation direction and rotation speed,
The number of pulses of the pulse-shaped welding current flowing per revolution of each consumable electrode wire is set to the same number, and the phases of the welding currents flowing to these consumable electrode wires are made to shift from each other, which causes magnetic spraying. The product of the welding currents flowing in the two arcs, which affects the electromagnetic attraction force, is suppressed to a smaller value than when the phases are synchronized, so the occurrence of magnetic blowing is reduced, and stable with high current and high efficiency. It has an effect that the welding can be performed.
【００２８】また、溶接進行方向に直列に配置された先
行と後行の二つの消耗電極ワイヤにそれぞれ流す溶接電
流の位相をピーク値が交互にくるようにずらせ、先行の
消耗電極ワイヤの溶接電流の平均値を後行の消耗電極ワ
イヤの溶接電流の平均値よりも大きく設定するようにし
たので、磁気吹きの発生が減少させられると共にアーク
が安定する先行の消耗電極ワイヤ側で溶接電流が大きい
ために良好なビード形状が得られる。Further, the phases of the welding currents respectively supplied to the two consumable electrode wires, the preceding and the following, which are arranged in series in the welding advancing direction, are shifted so that their peak values alternate, and the welding currents of the preceding consumable electrode wires are shifted. Since the average value of is set to be larger than the average value of the welding current of the consumable electrode wire in the following, the occurrence of magnetic blow is reduced and the arc is stable, and the welding current is large on the side of the preceding consumable electrode wire. Therefore, a good bead shape can be obtained.
【００２９】更に、溶接進行方向に直列に配置された先
行と後行の消耗電極ワイヤにそれぞれ流す溶接電流の位
相をピーク値が１／２周期毎に交互にくるようにずらせ
るようにしたので、先行と後行の消耗電極ワイヤに交互
に溶接電流が流れることとなって１本の消耗電極ワイヤ
だけに溶接電流を流すのと同じ状態となり、磁気吹きに
よるスパッタの発生が大幅に減少するという効果を有す
る。Further, the phases of the welding currents respectively flowing to the preceding and following consumable electrode wires arranged in series in the welding advancing direction are shifted so that their peak values alternate every ½ cycle. , The welding current flows alternately to the preceding and following consumable electrode wires, which is the same state as when the welding current is passed to only one consumable electrode wire, and the occurrence of spatter due to magnetic blowing is significantly reduced. Have an effect.
【図１】本発明方法に用いられるツインワイヤ回転アー
クトーチを示す断面正面図である。FIG. 1 is a sectional front view showing a twin wire rotary arc torch used in the method of the present invention.
【図２】２本の溶接ワイヤによる溶接状態を示す説明図
である。FIG. 2 is an explanatory view showing a welding state with two welding wires.
【図３】溶融池の上方に位置する２本の溶接ワイヤの回
転軌跡を示す説明図である。FIG. 3 is an explanatory diagram showing a rotation locus of two welding wires located above a molten pool.
【図４】溶接進行方向における溶接ワイヤの回転位置を
示す説明図である。FIG. 4 is an explanatory view showing a rotating position of a welding wire in a welding advancing direction.
【図５】２本の溶接ワイヤの回転位置とこれらに流れる
溶接電流の波形との関係を示す波形図である。FIG. 5 is a waveform diagram showing the relationship between the rotational positions of the two welding wires and the waveform of the welding current flowing through them.
【図６】２本の溶接ワイヤに流れる別の溶接電流の波形
を示す波形図である。FIG. 6 is a waveform diagram showing another waveform of a welding current flowing through two welding wires.
【図７】２本の溶接ワイヤに１回転複数パルスの溶接電
流が流れる状態を示す説明図である。FIG. 7 is an explanatory diagram showing a state in which a welding current of multiple pulses per rotation flows through two welding wires.
【図８】従来の１本の溶接ワイヤによる溶接状態を示す
説明図である。FIG. 8 is an explanatory view showing a welding state with a conventional single welding wire.
【図９】従来の溶接トーチの概要を示す斜視図である。FIG. 9 is a perspective view showing an outline of a conventional welding torch.
１ 溶接ワイヤ ２ 電極ノズル ３ ギヤ ４ 支点 ５ 回転中心軸 ８ 回転モータ ９ｂ 駆動ギヤ 1 welding wire 2 electrode nozzle 3 gear 4 fulcrum 5 rotation center shaft 8 rotation motor 9b drive gear
Claims (3)
極ワイヤを同一の回転方向及び回転速度で同期回転させ
ながら溶接する複数電極高速回転アーク溶接方法におい
て、 各々の消耗電極の１回転当りのパルス溶接電流のパルス
数をそれぞれ同数とし、且つこれら消耗電極ワイヤに流
す溶接電流の位相を互いに逆にしたことを特徴とする複
数電極高速回転アークの溶接電流制御方法。1. A multi-electrode high-speed rotary arc welding method for welding a plurality of consumable electrode wires arranged adjacent to each other while synchronously rotating them in the same rotation direction and rotation speed, wherein each consumable electrode is rotated once per revolution. A welding current control method for a multi-electrode high-speed rotating arc, wherein the number of pulses of the pulse welding current is the same, and the phases of the welding currents flowing through these consumable electrode wires are opposite to each other.
後行の二つの消耗電極ワイヤにそれぞれ流す溶接電流の
位相をピーク値が交互にくるように逆にし、先行の消耗
電極ワイヤの溶接電流の平均値を後行の消耗電極ワイヤ
の溶接電流の平均値よりも大きく設定したことを特徴と
する請求項１記載の複数電極高速回転アークの溶接電流
制御方法。2. The welding of the preceding consumable electrode wire is performed by reversing the phases of the welding currents respectively supplied to the two consumable electrode wires of the preceding and the following, which are arranged in series in the welding advancing direction so that the peak values alternate. The welding current control method for a multi-electrode high-speed rotating arc according to claim 1, wherein the average value of the current is set to be larger than the average value of the welding current of the consumable electrode wire that follows.
消耗電極ワイヤと後行の消耗電極ワイヤにそれぞれ流す
溶接電流の位相をピーク値が１／２周期毎に交互にくる
ように逆にしたことを特徴とする請求項１記載の複数電
極高速回転アークの溶接電流制御方法。3. The phases of the welding currents respectively supplied to the leading consumable electrode wire and the trailing consumable electrode wire arranged in series in the welding advancing direction are reversed so that peak values alternate every ½ cycle. The welding current control method for a multi-electrode high-speed rotating arc according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4179870A JP2751744B2 (en) | 1992-07-07 | 1992-07-07 | Welding current control method for multi-electrode high-speed rotating arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4179870A JP2751744B2 (en) | 1992-07-07 | 1992-07-07 | Welding current control method for multi-electrode high-speed rotating arc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0623551A true JPH0623551A (en) | 1994-02-01 |
| JP2751744B2 JP2751744B2 (en) | 1998-05-18 |
Family
ID=16073351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4179870A Expired - Fee Related JP2751744B2 (en) | 1992-07-07 | 1992-07-07 | Welding current control method for multi-electrode high-speed rotating arc |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2751744B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180098496A (en) * | 2015-07-31 | 2018-09-04 | 가부시키가이샤 고베 세이코쇼 | Electro gas arc welding method and electro gas arc welding apparatus |
| CN108687430A (en) * | 2017-04-06 | 2018-10-23 | 林肯环球股份有限公司 | System and method for arc welding and welding wire manipulation and control |
| US10173279B2 (en) | 2014-11-21 | 2019-01-08 | Lincoln Global, Inc. | Welding system |
| CN115722765A (en) * | 2022-11-17 | 2023-03-03 | 威海职业学院(威海市技术学院) | Arc welding control method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157575A (en) * | 1982-03-15 | 1983-09-19 | Hitachi Ltd | Switching welding |
| JPS6224866A (en) * | 1985-07-24 | 1987-02-02 | Nippon Kokan Kk <Nkk> | Rotary arc fillet welding method using double electrodes |
| JPS6224865A (en) * | 1985-07-24 | 1987-02-02 | Nippon Kokan Kk <Nkk> | Rotary arc fillet welding method using double electrodes |
| JPS6245473A (en) * | 1985-08-23 | 1987-02-27 | Ishikawajima Harima Heavy Ind Co Ltd | Multielectrode pulse current welding method |
-
1992
- 1992-07-07 JP JP4179870A patent/JP2751744B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157575A (en) * | 1982-03-15 | 1983-09-19 | Hitachi Ltd | Switching welding |
| JPS6224866A (en) * | 1985-07-24 | 1987-02-02 | Nippon Kokan Kk <Nkk> | Rotary arc fillet welding method using double electrodes |
| JPS6224865A (en) * | 1985-07-24 | 1987-02-02 | Nippon Kokan Kk <Nkk> | Rotary arc fillet welding method using double electrodes |
| JPS6245473A (en) * | 1985-08-23 | 1987-02-27 | Ishikawajima Harima Heavy Ind Co Ltd | Multielectrode pulse current welding method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10173279B2 (en) | 2014-11-21 | 2019-01-08 | Lincoln Global, Inc. | Welding system |
| KR20180098496A (en) * | 2015-07-31 | 2018-09-04 | 가부시키가이샤 고베 세이코쇼 | Electro gas arc welding method and electro gas arc welding apparatus |
| CN108687430A (en) * | 2017-04-06 | 2018-10-23 | 林肯环球股份有限公司 | System and method for arc welding and welding wire manipulation and control |
| CN115722765A (en) * | 2022-11-17 | 2023-03-03 | 威海职业学院(威海市技术学院) | Arc welding control method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2751744B2 (en) | 1998-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3274371A (en) | Method of depositing metal | |
| CA2505731C (en) | Mig-plasma welding | |
| JP3196140U (en) | Tandem buried arc welding | |
| JP2001058265A (en) | Welding method for pipe | |
| US3832522A (en) | Welding process and apparatus | |
| JP2008246495A (en) | Control device for welding wire | |
| JPH0623551A (en) | Welding current control method for plural electrode high-speed rotating arc | |
| JP4749555B2 (en) | Three-electrode arc welding control method | |
| US20230182225A1 (en) | Arc welding, cladding, and additive manufacturing method and apparatus | |
| JP2010155251A (en) | Plasma gma welding method | |
| JPH08187579A (en) | Method of electrogas arc welding and its device | |
| JPS62207583A (en) | Hot wire tig welding method | |
| JPH0320310B2 (en) | ||
| JPH0453617B2 (en) | ||
| JPH10328827A (en) | Arc welding device and welding equipment | |
| JP7000790B2 (en) | MIG welding method and MIG welding equipment | |
| Moinuddin et al. | Multiple-Wire Welding GMAW and SAW | |
| JP2001225168A (en) | Consumable electrode gas shielded arc welding method | |
| JP2000301336A (en) | Alternating current phase control system multiple electrode arc welding method and its device | |
| WO2023095562A1 (en) | Arc welding method and arc welding device | |
| WO2020202508A1 (en) | Mig welding method and mig welding device | |
| JP2720704B2 (en) | Multi-wire rotating arc welding torch | |
| JPS62114772A (en) | Mig welding method | |
| JPS6117369A (en) | Pulse arc welding | |
| JP3185071B2 (en) | Consumable electrode type arc welding method and its welding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |