JPS6043830B2 - Non-consumable electrode multi-electrode arc welding method and device - Google Patents
Non-consumable electrode multi-electrode arc welding method and deviceInfo
- Publication number
- JPS6043830B2 JPS6043830B2 JP8815378A JP8815378A JPS6043830B2 JP S6043830 B2 JPS6043830 B2 JP S6043830B2 JP 8815378 A JP8815378 A JP 8815378A JP 8815378 A JP8815378 A JP 8815378A JP S6043830 B2 JPS6043830 B2 JP S6043830B2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- welding
- current
- electrode
- arc welding
- 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.)
- Expired
Links
Description
【発明の詳細な説明】
この発明は複数個所の被溶接部を複数の非消耗電極式ア
ーク溶接機、例えば、プラズマキーホール溶接を行なう
プラズマ溶接機やＴＩＧ溶接機など・で、多電極同時溶
接を行なう場合の溶接方法、およびその溶接に使用する
溶接装置に関するものである。Detailed Description of the Invention The present invention provides simultaneous multi-electrode welding of multiple parts to be welded using multiple non-consumable electrode type arc welders, such as a plasma welder that performs plasma keyhole welding or a TIG welder. The present invention relates to a welding method for welding, and a welding device used for the welding.
例えば、従来第１図に示すような円筒形の被溶接物４の
外周を円周方向に３個所溶接する場合、３台の非消耗電
極式アーク溶接のトーチ部分１、２および３を固定し、
被加工物４をチャック６を介して回転装置５で回転させ
ながら、多電極同時溶接を行なう溶接装置が一般に使用
されていた。For example, when conventionally welding the outer circumference of a cylindrical workpiece 4 as shown in Fig. 1 at three locations in the circumferential direction, the torch parts 1, 2, and 3 of three non-consumable electrode arc welding machines are fixed. ,
A welding device that performs simultaneous multi-electrode welding while rotating the workpiece 4 through a chuck 6 with a rotating device 5 has been generally used.
この装置を使用して多電極同時溶接を行なう場合におい
て、溶接開始時に、被溶接物４の表面状態、電極の状態
などの影響で、そのアークスタートは同時に行なわれる
ことは少なく、通常は各ト−チ１，２，３のアークスタ
ートは第２図に示すように差異が生じるのが普通である
。いま仮に、中央のトーチ２がアークスタートしてから
回転開始遅れ時間Δｔ後に回転装置５の回転が開始する
ように構成されていたとすると、左側のトーチ１の溶接
部では被加工物４の回転開始前に相当被加工物４の溶融
が進行しており、右側のトーチ３の溶接部ではアークス
タート前に被加工物４は回転を開始してしまい、いずれ
も溶接欠陥になつてしまう欠点があり、これが多電極同
時溶接の問題点であつた。この発明は上記のような欠点
を除去し、溶接開始点に欠陥が発生するのを防止するこ
とを目的とするものである。When performing multi-electrode simultaneous welding using this device, the arc start is rarely performed at the same time due to the surface condition of the workpiece 4, the condition of the electrodes, etc. at the start of welding, and usually each welding point is started at the same time. - It is normal for arc starts of H1, 2, and 3 to differ as shown in FIG. Assuming that the rotating device 5 is configured to start rotating after a rotation start delay time Δt after arc start of the center torch 2, the rotation of the workpiece 4 will start at the welding part of the left torch 1. The melting of the corresponding workpiece 4 has progressed before, and the workpiece 4 starts rotating before the arc starts at the welding part of the right torch 3, which has the disadvantage of causing welding defects in both cases. This was the problem with simultaneous multi-electrode welding. The object of the present invention is to eliminate the above-mentioned drawbacks and to prevent defects from occurring at the welding starting point.
以下、この発明の一実施例について第３図によつて説明
する。An embodiment of the present invention will be described below with reference to FIG.
この実施例では、平常の溶接を行なう時の電流１ｗと、
この電流１ｗより充分小さい起動電流１ｓとを設定出来
る溶接電源を使用して、その出力電流を起動電流１ｓに
設定して溶接電源の溶接開始スイッチを投入する。この
場合も、トーチ１，２，３によつて第３図に示すように
、差異を持つてアークスタートが行なわれる。さらにこ
の実施例では、上記各トーチ１，２，３がアークスター
トしたかどうかを検知するために、例えば電流リレーな
どを使つたアークスタート検出器がそれぞれ取付けられ
ており、これらアークスタート検出器のすべてが、各ト
ーチ１，２，３共アークスタートしたことを検出すると
、上記各溶接電源の出力電流の設定を起動電流１ｓから
溶接時の電流１ｗに切換るように構成されている。In this example, a current of 1 W when performing normal welding,
Using a welding power source that can set a starting current of 1 s that is sufficiently smaller than this current 1 W, the output current is set to 1 s of starting current, and the welding start switch of the welding power source is turned on. In this case as well, the arc starts are performed differently by torches 1, 2, and 3, as shown in FIG. Further, in this embodiment, in order to detect whether or not each of the torches 1, 2, and 3 has arc started, an arc start detector using, for example, a current relay is installed. When it is detected that each of the torches 1, 2, and 3 has started the arc, the setting of the output current of each welding power source is switched from the starting current 1 s to the welding current 1 w.
また、被溶接物４をトーチ１，２，３に対して相対的に
移動させるための回転装置５の起動は、上記のように各
トーチ１，２，３共アークスタートしたことをアークス
タート検出器で検出してからΔｔ時間後に行なうように
、この実施例では構成してある。このように構成された
装置においては、各トーチのアークスタートに多少の差
異があつても、全部のトーチがアークスタートするまで
は溶接時の電流１ｗに比べて充分小さい起動電流１ｓで
溶接を行つているので、この期間の被溶接部の溶融はほ
とんどなく、溶接欠陥が発生することを防止することが
出来る。In addition, the activation of the rotating device 5 for moving the workpiece 4 relative to the torches 1, 2, and 3 is performed by detecting the arc start that each torch 1, 2, and 3 have started the arc as described above. This embodiment is configured such that the detection is performed after a time Δt after detection by the device. In a device configured in this way, even if there is a slight difference in the arc start of each torch, welding is performed with a starting current of 1 s, which is sufficiently smaller than the current of 1 w during welding, until all torches start their arc. Therefore, there is almost no melting of the part to be welded during this period, and it is possible to prevent welding defects from occurring.
以上、３台の溶接機を使つて円筒形の被溶接物の外周を
同時溶接する場合について説明したが、この発明はこの
実施例に限定されるものではないことは言うまでもない
。The case where three welding machines are used to simultaneously weld the outer periphery of a cylindrical object to be welded has been described above, but it goes without saying that the present invention is not limited to this embodiment.
この発明による非消耗電極式多電極アーク溶接方法およ
び装置は、多電極同時溶接を行なう場合に溶接時の電流
より充分小さい起動電流でアークスタートをさせた上、
すべての電極のアークスタートが完了した後に溶接時の
電流に上昇させるようにしたしたものであるので、アー
クスタートのタイミングに多少の差異があつても、この
間に被加工物に与えられている入熱はきわめて小さく、
この結果アークスタートのばらつきによる溶接欠陥の発
生を防止することが出来る。The non-consumable electrode type multi-electrode arc welding method and device according to the present invention, when performing multi-electrode simultaneous welding, starts the arc with a starting current sufficiently smaller than the current during welding, and
The current is increased to the welding current after the arc starts of all electrodes are completed, so even if there is a slight difference in the arc start timing, the input applied to the workpiece during this time will be reduced. The heat is extremely small;
As a result, it is possible to prevent welding defects from occurring due to variations in arc start.
特に、プラズマキーホール溶接のようにキーホールが母
材を貫通した後、トーチと被溶接物との相対的移動を開
始するタイミングが、０．１秒単位の精度が要求される
場合においては、その効果はきわめて大きいものである
。Particularly, in cases such as plasma keyhole welding, where the timing for starting the relative movement between the torch and the workpiece after the keyhole has penetrated the base metal requires precision to the nearest 0.1 second. The effect is extremely large.
第１図は多電極同時溶接の一例の正面図、第２図は従来
のシーケンス図、第３図はこの発明によるシーケンス図
である。
図において、１，２および３はトーチ、４は被加工物、
５は回転装置、６はチャックを示す。FIG. 1 is a front view of an example of simultaneous multi-electrode welding, FIG. 2 is a conventional sequence diagram, and FIG. 3 is a sequence diagram according to the present invention. In the figure, 1, 2 and 3 are torches, 4 is a workpiece,
5 is a rotating device, and 6 is a chuck.
Claims (1)
接機で多電極同時溶接を行なう溶接方法において、上記
アーク溶接機の出力電流を溶接時の電流より充分小さい
起動電流に設定してアークスタートさせ、すべての上記
アーク溶接機のアークスタートが完了したことを確認し
た後に、各上記アーク溶接機の出力電流を上記溶接時の
電流に上昇させるように制御を行なうことを特徴とする
非消耗電極式多電極アーク溶接方法。 ２ 複数個所の被溶接部に非消耗電極式多電極同時アー
ク溶接を行なう装置において、少くとも出力電流を溶接
時の電流と、この溶接時の電流より充分小さい起動電流
との二段階に設定出来る複数の非消耗電極式アーク溶接
機と、この複数のアーク溶接機がそれぞれアークスター
トしたことを検出する複数のアークスタート検出器と、
この複数のアークスタート検出器が上記複数のアーク溶
接機のアークスタートがすべて完了したことを検出する
と、上記アーク溶接機の出力電流の設定を、起動電流か
ら溶接時の電流に切換を行なう装置とを備えたことを特
徴とする非消耗電極式多電極アーク溶接装置。 ３ 複数の非消耗電極式アーク溶接機がプラズマキーホ
ール溶接を行なうプラズマアーク溶接機であることを特
徴とする特許請求の範囲第２項記載の非消耗電極式多電
極アーク溶接装置。[Scope of Claims] 1. In a welding method in which multi-electrode simultaneous welding is performed on a plurality of parts to be welded using a plurality of non-consumable electrode type arc welders, the output current of the arc welder is started to be sufficiently lower than the current during welding. After setting the current to arc start and confirming that the arc start of all the above-mentioned arc welding machines has been completed, control is performed so that the output current of each of the above-mentioned arc welding machines is increased to the above-mentioned welding current. A non-consumable electrode multi-electrode arc welding method characterized by: 2. In a device that performs non-consumable multi-electrode simultaneous arc welding on multiple parts to be welded, the output current can be set at least in two stages: a welding current and a starting current that is sufficiently smaller than this welding current. a plurality of non-consumable electrode type arc welding machines; a plurality of arc start detectors for detecting that each of the plurality of arc welding machines has started an arc;
When the plurality of arc start detectors detect that the arc starts of the plurality of arc welders are all completed, the device switches the output current setting of the arc welder from the starting current to the welding current. A non-consumable electrode type multi-electrode arc welding device characterized by being equipped with. 3. The non-consumable electrode type multi-electrode arc welding apparatus according to claim 2, wherein the plurality of non-consumable electrode type arc welding machines are plasma arc welding machines that perform plasma keyhole welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8815378A JPS6043830B2 (en) | 1978-07-19 | 1978-07-19 | Non-consumable electrode multi-electrode arc welding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8815378A JPS6043830B2 (en) | 1978-07-19 | 1978-07-19 | Non-consumable electrode multi-electrode arc welding method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5516721A JPS5516721A (en) | 1980-02-05 |
| JPS6043830B2 true JPS6043830B2 (en) | 1985-09-30 |
Family
ID=13934975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8815378A Expired JPS6043830B2 (en) | 1978-07-19 | 1978-07-19 | Non-consumable electrode multi-electrode arc welding method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043830B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10961344B2 (en) | 2009-04-09 | 2021-03-30 | The Sherwin-Williams Company | Polymer having unsaturated cycloaliphatic functionality and coating compositions therefrom |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59148175U (en) * | 1983-03-23 | 1984-10-03 | 橋本フオ−ミング工業株式会社 | Welding current switching device |
| JP2542870Y2 (en) * | 1990-06-13 | 1997-07-30 | 象印マホービン株式会社 | Container door |
| JP4847291B2 (en) * | 2006-11-16 | 2011-12-28 | 株式会社ダイヘン | Start synchronous arc welding method |
| JP4916848B2 (en) * | 2006-11-22 | 2012-04-18 | 株式会社ダイヘン | Start synchronous arc welding method |
-
1978
- 1978-07-19 JP JP8815378A patent/JPS6043830B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10961344B2 (en) | 2009-04-09 | 2021-03-30 | The Sherwin-Williams Company | Polymer having unsaturated cycloaliphatic functionality and coating compositions therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5516721A (en) | 1980-02-05 |
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