JP2751744B2 - Welding current control method for multi-electrode high-speed rotating arc - Google Patents
Welding current control method for multi-electrode high-speed rotating arcInfo
- Publication number
- JP2751744B2 JP2751744B2 JP4179870A JP17987092A JP2751744B2 JP 2751744 B2 JP2751744 B2 JP 2751744B2 JP 4179870 A JP4179870 A JP 4179870A JP 17987092 A JP17987092 A JP 17987092A JP 2751744 B2 JP2751744 B2 JP 2751744B2
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- Prior art keywords
- welding
- welding current
- consumable electrode
- average value
- wire
- Prior art date
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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 rotating arc welding method in which two consumable electrode wires are used and two arcs are simultaneously generated and synchronously rotated for welding. The present invention relates to a method for controlling a welding current of 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. As shown in FIG. When a large current is applied to the wire 1, the arc shape P concentrates on one portion of the molten pool WP, so that the bead shape of the weld bead WB is poor and there is a problem in 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。[0003] Therefore, a high-speed rotating arc welding method has been proposed in which welding is performed while rotating an arc generated between a welding wire and a member to be welded in a circular motion (Japanese Patent Publication No. 63-63).
No. 39346). As a method for realizing this rotating arc, for example, there is a method for rotating an electrode nozzle through which a welding wire passes as disclosed in Japanese Patent Application Laid-Open No. 62-248571. FIG. 9 shows an outline of a welding torch according to this method.
【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, in this structure, the intermediate portion of the electrode nozzle 2 through which the welding wire passes is rotatably supported by the self-aligning bearing 7 at a position eccentric by a predetermined distance from the center of the rotating gear 3. , The upper portion of the electrode nozzle 2 is supported as a fulcrum 4 (the fulcrum 4 is formed 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. , The arc 10 generated at the tip of the welding wire 1 projecting from the tip of the electrode nozzle 2
Can make a circular motion.
【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 penetration shape can be flattened by the dispersion of the arc force and the arc heat, and the bead shape is improved. The welding speed of the welding wire increases due to the centrifugal force of rotation,
Higher efficiency than when the arc is not rotated. In fillet welding and welding with a groove, an arc sensor-type welding line tracing control using waveforms of a welding current and an arc voltage can be performed. 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, in the conventional rotary arc welding method, there is only one welding wire.
When the welding current is increased, the heat input increases, and in the case of single-sided butt welding, there is a problem that a pear crack is generated.
【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 possibility that magnetic blowing of the arc may occur, and the arc becomes unstable and the amount of spatter generated increases. A problem arose.
【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。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and reduces the occurrence of magnetic blowing while maintaining the advantages of the high-speed rotary arc welding method, thereby achieving high-speed and high-efficiency welding with little 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 following.
【0009】[0009]
【課題を解決するための手段】本発明の請求項1に係る
複数電極高速回転アークの溶接電流制御方法は、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、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ものである。According to a first aspect of the present invention, there is provided a method for controlling a welding current of a multi-electrode high-speed rotating arc, in which two preceding and following consumable electrode wires arranged in series in a welding progress direction are made identical. In the multi-electrode high-speed rotary arc welding method of performing welding while rotating synchronously in the rotation direction and the rotation speed of the consumable electrode, the number of pulses of the pulse welding current per rotation of each consumable electrode is set to the same number, and welding is performed on these consumable electrode wires. The phases of the currents are reversed, and the average value of the welding current of the preceding consumable electrode wire is set to be larger than the average value of the welding current of the subsequent consumable electrode wire.
【0010】本発明の請求項2に係る複数電極高速回転
アークの溶接電流制御方法は、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、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
定したものである。According to a second aspect of the present invention, there is provided a method for controlling a welding current of a multi-electrode high-speed rotating arc, in which two leading and trailing consumable electrode wires arranged in series in the welding progress direction have the same rotational direction and rotational speed. In the multi-electrode high-speed rotating arc welding method in which welding is performed while rotating synchronously, the phases of the welding current flowing through the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding progress direction are such that the peak values alternate. The average value of the welding current of the preceding consumable electrode wire is set to be larger than the average value of the welding current of the subsequent consumable electrode wire.
【0011】本発明の請求項3に係る複数電極高速回転
アークの溶接電流制御方法は、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、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1/2n (n
=1又は2)周期毎に交互にくるようにし、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ものである。According to a third aspect of the present invention, there is provided a welding current control method for a multi-electrode high-speed rotating arc, wherein two consumable electrode wires, a leading electrode and a trailing electrode, which are arranged in series in a welding progress direction, have the same rotational direction and rotational speed. In the multi-electrode high-speed rotating arc welding method in which welding is performed while rotating synchronously, the peak value of the phase of the welding current flowing through the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding direction is set to 1/2 n (N
= 1 or 2) The average value of the welding current of the preceding consumable electrode wire is set to be larger than the average value of the welding current of the consumable electrode wire of the succeeding electrode so as to alternate every cycle.
【0012】[0012]
【作用】本発明においては、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、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よるスパッ
タ発生量を減少させ、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溶接ビード形
状が得られる。According to the present invention, when the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding progress direction are welded while being synchronously rotated in the same rotation direction and rotational speed, each of the consumable electrode wires is used. The number of pulses of the pulse welding current per one rotation is the same, the phases of the welding currents flowing through these consumable electrode wires are reversed, and the average value of the welding currents of the preceding consumable electrode wires is used for the following consumable electrode wires. Since the welding current is set to be larger than the average value, the product of the welding current flowing through the two arcs, which is proportional to the electromagnetic attraction force that causes the magnetic blowing, is suppressed to be smaller than when the phases are synchronized. Therefore, the amount of spatters generated by magnetic blowing is reduced, and a good welding bead shape can be obtained because the welding current on the preceding consumable electrode wire side where the arc is stabilized is large.
【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、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
大きく設定したから、磁気吹きよるスパッタ発生量を減
少させ、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溶接ビード形状が得られ
る。Further, when welding is performed while rotating the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding traveling direction while synchronously rotating in the same rotation direction and rotational speed, they are arranged in series in the welding traveling direction. The phases of the welding current flowing through the two preceding consumable electrode wires are alternately set to peak values, and the average value of the welding current of the preceding consumable electrode wire is calculated as the welding current of the following consumable electrode wire. Since the value is set to be larger than the average value, the amount of spatter generated by magnetic blowing is reduced, and a good welding bead shape can be obtained because the welding current on the preceding consumable electrode wire side where the arc is stabilized is large.
【0014】さらに、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、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
/2n (n=1又は2)周期毎に交互にくるようにし、
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か
ら、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
に減少し、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溶接ビード形状が得られ
る。Further, when welding is performed while the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding progress direction are synchronously rotated in the same rotation direction and rotational speed, they are arranged in series in the welding progress direction. The phase of the welding current flowing through each of the two consumable electrode wires of the preceding and following lines has a peak value of 1
/ 2 n (n = 1 or 2) alternately every cycle,
Since the average value of the welding current of the preceding consumable electrode wire was set to be larger than the average value of the welding current of the following consumable electrode wire, the welding current alternately flows through the preceding and following consumable electrode wires. The welding current is almost the same as when only one consumable electrode wire is applied, and the occurrence of magnetic blowing is greatly reduced. The shape is obtained.
【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。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 using two welding wires, and FIG. FIG. 4 is an explanatory diagram showing the rotational locus of two welding wires, FIG. 4 is an explanatory diagram showing the rotational position of the welding wire in the welding traveling direction, and FIG. 5 is a diagram showing the rotational positions of the two welding wires and the waveform of the welding current flowing through them. FIG. 6 is a waveform diagram showing 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 rotating body 15 are rotated by the rotating motor 8 and the driving gear 9b, the upper end of the electrode nozzle 2 becomes a fulcrum 4
As an insulated bush 12 and a self-aligning bearing 13, the intermediate portion circularly moves around the rotation center axis 5 by the eccentric ring 19 with a predetermined eccentricity e without rotating. In other words, the tip of the electrode nozzle 2 rotates with the upper end as the fulcrum 4. Since the two welding wires 1 are guided by the conduit tube 21 at positions eccentric from the center of the electrode nozzle 2 that makes such a rotational movement, the tip of the welding wire 1 protruding from the energizing tip 22 is As shown in FIG. 4, a circular motion is made without rotating around the rotation center axis 5. Therefore, the arcs simultaneously generated from the tips of the respective welding wires 1 rotate synchronously in the same rotational direction and rotational speed. When the welding torch is advanced on the welding line while being rotated as described above, the rotating arc draws a loop-like locus. That is, as shown in FIGS. 2 and 3, this welding torch can synchronously rotate two welding wires 1 serving as a leading electrode L and a trailing electrode T in the same rotation direction and rotation speed.
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, a case where the method of the present invention is carried out using the twin-wire rotary arc torch shown in FIG. 1 will be described. Each welding wire 1 of the twin-wire rotary arc torch is rotated under the following rotation conditions to perform arc welding. 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 rotating in the same rotation direction and rotation speed as described above.
Also, welding is performed by passing 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
00A, the base current I B is 200A, the average current I AV 5
00A, t P (peak time): t B (base time) =
At 1: 1, the welding current of one pulse per rotation of the welding wire 1 is adjusted so that the peak current I P and the rotation rear Cr side are within the 180 ° angle range of 270 ° to 90 ° on the rotation front Cf side shown in FIG. a base current I B in the angular range of 180 ° of 90 ° to 270 ° shed so as to be located. Peak current I P to the trailing electrode T is 500A, the base current I B is 100A, the average current I AV is 300A, t P (peak time): t B (base time) = 1: 1, the welding wire 1 The welding current of one pulse per rotation was changed from 270 ° to 90 ° on the rotation front Cf side shown in FIG.
Base current I B , rotation back C
peak current I P to the angular range of 180 ° of the r side of 90 ° to 270 ° shed to be located.
【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。[0020] Thus, shifted as two electrodes L of the preceding and the following, which are arranged in series, the peak current I P the phase of the pulsed welding current to flow respectively to T comes alternately in welding direction WD the Rukoto, because it is suppressed as compared with the case the product is the peak current I P of the welding current flowing through the two arcs that affect electromagnetic attraction force that could cause such a blow magnetism are synchronized with each other, the magnetic blow 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。The average value I AV of the welding current of the leading electrode L
There because they are larger than the average value I AV of the welding current of the trailing electrode T, good bead shape is 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 pulse-like 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 peak current I P to the 1000A, base current is I B 333A,
When the average current I AV is 500 A, t P : t B = 1: 3, and the welding current of one pulse per one time of the welding wire 1 is changed to the rotation 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. Peak current I P to the trailing electrode T is 600A, the base current I B is 200A,
At an average current of 300 A, t P : t B = 1: 3, the welding current of one pulse per one time of the welding wire 1 is applied to the peak current I P and the peak current in an angle range of 135 ° to 245 ° on the Cr side after rotation. I P angular range than the angular range to the base current I B
Pour so that is located. Incidentally, the welding current ratio of I AV of I AV and trailing electrode T of the leading electrode L 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-like welding current flowing to the two preceding and succeeding electrodes L and T arranged in series in the welding advancing direction WD is determined by changing the phase of the peak current I P every half cycle. Arc 1 by shifting alternately
At the time of rotation, the welding current flows alternately to the leading and trailing electrodes L and T, which is the same state as flowing the welding current to one welding wire, and the occurrence of magnetic blowing 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.
In the example shown in FIG. 7A, one pulse of the welding current flows per one rotation of the welding wire, and as shown in FIG. The peak current I P of the welding current flowing to the electrode T is shifted alternately, or the welding current of 4 pulses per rotation of each welding wire 1 is applied as shown in FIG.
The peak current I P of the welding current to be supplied to the trailing electrode T is or as shifting to come alternately and, of course having the same operations and effects as described above.
【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-wire rotary arc torch shown in FIG. 1 is used to synchronously rotate the leading electrode L and the trailing electrode T in the same rotation direction and rotation speed. 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 rotational direction and rotational 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-described embodiment, the case where the number of rotating electrodes is two is compared. However, even if two or more electrodes are used, if the phases of the welding currents flowing through these electrodes are shifted from each other, the method of the present invention is used. Of course is applied.
【0027】[0027]
【発明の効果】本発明は以上説明したとおり、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、
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
吹きよるスパッタ発生量を減少させ、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
な溶接ビード形状が得られることにより、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, the present invention is applicable to the case where welding is performed while synchronously rotating two preceding and following consumable electrode wires arranged in series in the welding traveling direction in the same rotational direction and rotational speed. The number of pulses of the pulse welding current per rotation of each consumable electrode is set to the same number, and the phases of the welding currents flowing through these consumable electrode wires are reversed.
Since the average value of the welding current of the preceding consumable electrode wire is set to be larger than the average value of the welding current of the subsequent consumable electrode wire, the current flows through two arcs proportional to the electromagnetic attraction force that causes magnetic blowing. The product of the welding current is reduced compared to the case where the phases are synchronized, so that the amount of spatter generated by magnetic blowing is reduced. By obtaining a weld bead shape, there is an effect that highly efficient and stable welding can be performed with a large current.
【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、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
大きく設定したから、磁気吹きよるスパッタ発生量を減
少させ、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溶接ビード形状が得られる
という効果を有する。Further, when welding is performed while two consumable electrode wires, preceding and succeeding, arranged in series in the welding progress direction are synchronously rotated in the same rotation direction and rotational speed, they are arranged in series in the welding progress direction. The phases of the welding current flowing through the two preceding consumable electrode wires are alternately set to peak values, and the average value of the welding current of the preceding consumable electrode wire is calculated as the welding current of the following consumable electrode wire. Since the value is set to be larger than the average value, the amount of spatter generated by magnetic blowing is reduced, and an excellent welding bead shape can be obtained because the welding current on the preceding consumable electrode wire side where the arc is stabilized is large.
【0029】さらに、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、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
/2n (n=1又は2)周期毎に交互にくるようにし、
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か
ら、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
に減少し、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溶接ビード形状が得られ
るという効果を有する。Further, when welding is performed while rotating the two consumable electrode wires of the preceding and succeeding electrodes arranged in series in the welding progress direction in the same rotation direction and the same rotation speed, they are arranged in series in the welding progress direction. The phase of the welding current flowing through each of the two consumable electrode wires of the preceding and following lines has a peak value of 1
/ 2 n (n = 1 or 2) alternately every cycle,
Since the average value of the welding current of the preceding consumable electrode wire was set to be larger than the average value of the welding current of the following consumable electrode wire, the welding current would flow alternately through the preceding and following consumable electrode wires. Good welding bead because the welding current flows through only one consumable electrode wire, and the occurrence of magnetic blowing is greatly reduced, and the welding current on the preceding consumable electrode wire side where the arc is stable is large. This has the effect that a shape can be obtained.
【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 diagram showing a welding state using 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 rotation trajectories 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 diagram showing a rotation position of a welding wire in a welding traveling 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 a relationship between rotational positions of two welding wires and waveforms of a 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 welding current waveform 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 view showing a state in which a welding current of a plurality of 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 using 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 REFERENCE SIGNS LIST 1 welding wire 2 electrode nozzle 3 gear 4 fulcrum 5 rotation center axis 8 rotation motor 9b drive gear
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−157575(JP,A) 特開 昭62−45473(JP,A) 特開 昭62−24865(JP,A) 特開 昭62−24866(JP,A) 特開 平1−178373(JP,A) 特開 昭63−313674(JP,A) (58)調査した分野(Int.Cl.6,DB名) B23K 9 - 9/127──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-58-157575 (JP, A) JP-A-62-45473 (JP, A) JP-A-62-24865 (JP, A) JP-A 62-45865 24866 (JP, A) JP-A-1-178373 (JP, A) JP-A-63-313674 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) B23K 9-9 / 127
Claims (3)
後行の二つ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、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複数
電極高速回転アークの溶接電流制御方法。1. A precedent arranged in series in a welding traveling direction.
In the multi-electrode high-speed rotating arc welding method in which the two subsequent consumable electrode wires are welded while rotating synchronously in the same rotational direction and rotational speed, the number of pulses of the pulse welding current per rotation of each consumable electrode is the same. and then, and then the mutually opposite phase of the welding current flowing in these consumable electrode wire, leading consumable electrode wire
The average value of the welding current of the
A welding current control method for a multi-electrode high-speed rotating arc, wherein the welding current is set to be larger than an average value of a flow .
後行の二つ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、 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. A precedent arranged in series in a welding traveling direction.
Rotate the two consumable electrode wires in the same direction and direction.
Multi-electrode high-speed rotating
In over click welding process, the peak value of the phase of the welding current flowing respectively in two consumable electrode wires leading and trailing arranged in series welding direction is to come alternately previous consumable electrode wire of the welding current 2. The welding current control method for a multi-electrode high-speed rotating arc according to claim 1, wherein the average value of the welding current of the following consumable electrode wires is set to be larger than the average value of the following.
後行の二つ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、 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 n (n=1又は2)周期毎に交互にくるように
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。3. A method according to claim 1, further comprising the steps of:
Rotate the two consumable electrode wires in the same direction and direction.
Multi-electrode high-speed rotating
In the arc welding method, the phase of the welding current flowing through the two consumable electrode wires of the leading and trailing electrodes arranged in series in the welding progress direction is changed by a peak value every 1/2 n (n = 1 or 2) cycle. So that they come alternately
And the average value of the welding current of the preceding consumable electrode wire
Set the welding current of the consumable electrode wire larger than the average value.
2. The method for controlling a welding current of a multi-electrode high-speed rotating arc according to claim 1.
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 JPH0623551A (en) | 1994-02-01 |
JP2751744B2 true 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) |
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US10173279B2 (en) | 2014-11-21 | 2019-01-08 | Lincoln Global, Inc. | Welding system |
JP6609493B2 (en) * | 2015-07-31 | 2019-11-20 | 株式会社神戸製鋼所 | Electrogas arc welding method and electrogas arc welding apparatus |
US10500671B2 (en) * | 2017-04-06 | 2019-12-10 | Lincoln Global, Inc. | System and method for arc welding and wire manipulation control |
CN115722765B (en) * | 2022-11-17 | 2023-07-25 | 威海职业学院(威海市技术学院) | Arc welding control method and system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58157575A (en) * | 1982-03-15 | 1983-09-19 | Hitachi Ltd | Switching welding |
JPS6224865A (en) * | 1985-07-24 | 1987-02-02 | Nippon Kokan Kk <Nkk> | Rotary arc fillet welding method using double electrodes |
JPS6224866A (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
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Publication number | Publication date |
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JPH0623551A (en) | 1994-02-01 |
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