JPS6163363A - High speed tack welding method - Google Patents
High speed tack welding methodInfo
- Publication number
- JPS6163363A JPS6163363A JP18378184A JP18378184A JPS6163363A JP S6163363 A JPS6163363 A JP S6163363A JP 18378184 A JP18378184 A JP 18378184A JP 18378184 A JP18378184 A JP 18378184A JP S6163363 A JPS6163363 A JP S6163363A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- wire
- electrode
- high speed
- arc
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0008—Welding without shielding means against the influence of the surrounding atmosphere
- B23K9/0017—Welding without shielding means against the influence of the surrounding atmosphere using more than one electrode
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は本溶接に先立って行なう仮付溶接を高速度で
連続的に行なう高速仮付溶接方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-speed tack welding method in which tack welding is performed continuously at high speed prior to main welding.
従来、仮付溶接を高速で行なう場合は第３図に示すよう
に、先行雷葎１と後行電荷２にょる２電極ミグ溶接法に
ょジ溶接を行なっている。すなわち、溶接ワイヤとして
各々ソリッドワイヤを使用した先行前極１と後行電極２
の電析間距離を短がぐし、先行￥Ｍ極１のアーク６によ
り生じた溶融金属４が後行電極２の後方へ流出すること
を後行電極２のアーク５で塞き止めながら連続した溶接
ビードを形成して溶接を行なっている。Conventionally, when performing tack welding at high speed, a two-electrode MIG welding method using a leading bolt 1 and a trailing charge 2 is used, as shown in FIG. That is, a leading front electrode 1 and a trailing electrode 2 each using a solid wire as a welding wire.
The distance between the electrodes was shortened, and the molten metal 4 generated by the arc 6 of the leading M pole 1 continued to flow while blocking the flow of the molten metal 4 to the rear of the trailing electrode 2 with the arc 5 of the trailing electrode 2. Welding is performed by forming a weld bead.
この２正極溶接法においては先行前極１は母材の溶込み
深さを確保し、後行電極２は溶融金属４を塞き止め、出
来上りの溶接ビード形状を良好にする作用を行なってお
り、両ｔ、極の使用目的が相違する。In this two-positive electrode welding method, the leading front electrode 1 ensures the penetration depth of the base metal, and the trailing electrode 2 functions to block the molten metal 4 and improve the shape of the finished weld bead. , both t and the purpose of use of the poles are different.
しかしながら、従来は先行？Ｆ！極１と後行型＠２共に
溶接ワイヤとしてソリッドワイヤを使用しており、この
ソリッドワイヤ６は第４図に示すように溶滴７の移行が
流れで行なわれ、ワイヤ先端が長く伸びアーク８がしほ
られる。このため先行雪５卿１の母材混込み深さを確保
するのには適するが、非常に高速で仮付溶接する場合に
は後行′Ｉ／Ｌ極２の溶融金に４を塞き止めるという目
的を一足させることができず、溶融金属の流れが不安定
となり、溶接ビード形状が凹凸の著しい不整ビード（ハ
ンピングビード）を生じる。However, has it always been the first step? F! A solid wire is used as the welding wire for both pole 1 and trailing type @2, and as shown in Fig. 4, this solid wire 6 allows the transfer of droplets 7 to occur in a flow, and the tip of the wire is elongated to form an arc 8. I'm kidnapped. For this reason, it is suitable for ensuring the base metal mixing depth of the preceding snow 5 and 1, but when performing tack welding at very high speeds, it is necessary to block 4 with the molten metal of the trailing I/L pole 2. The purpose of stopping the weld metal cannot be achieved, and the flow of the molten metal becomes unstable, resulting in an irregular weld bead (humping bead) with a significantly uneven weld bead shape.
仮付溶接で不整ビードが生じると本溶接においてスラグ
巻込みや融合不良などの溶接欠陥が発生し易く、また本
溶接の際、溶接線倣いが困難となる問題点があった０こ
のため仮付溶接の溶接速度を６ｍ１０程度に抑える必要
があった。If an irregular bead occurs during tack welding, welding defects such as slag entrainment or poor fusion are likely to occur during actual welding, and there is also the problem that it is difficult to follow the weld line during actual welding. It was necessary to keep the welding speed to about 6m10.
この発明の高速仮付溶接方法は、先行電極の溶接ワイヤ
にソリッドワイヤを使用し、後行電極の溶接ワイヤに７
ラツクスコアードワイヤを使用して連続した溶接ビード
を高速で形成する方法である０
〔作用〕
複数の電極を使用する高速仮付溶接で溶接ビードを連続
させるためには、先行電極と後行電極間に生じる溶融金
属の湯だまりを安定させる必要がある。この浴融金属の
湯だまりを安定に作るには、先行電極の溶接ワイヤにソ
リッドワイヤを使用して、母材溶込深さを確保すると同
時に、後行電極のアーク力で先行電極により溶かされた
溶融金属を塞き止める必要がある。後行ｔ＠Ｌの溶接ワ
イヤをフラックスコアードワイヤにすると、ソリッドワ
イヤを使用した場合１・て比べてアーク柱の幅が広いの
で、アーク力により溶融金属を効果的に塞き止めること
ができる。The high-speed tack welding method of this invention uses a solid wire for the welding wire of the leading electrode, and uses a solid wire for the welding wire of the trailing electrode.
This is a method of forming a continuous weld bead at high speed using a lux-cored wire. It is necessary to stabilize the pool of molten metal that forms between them. In order to stably create a puddle of this bath molten metal, use a solid wire as the welding wire of the leading electrode to ensure the base metal penetration depth, and at the same time ensure that the arc force of the trailing electrode melts the metal by the leading electrode. It is necessary to stop the molten metal. If a flux cored wire is used as the welding wire for trailing t@L, the width of the arc column is wider than in case 1 when a solid wire is used, so the molten metal can be effectively blocked by the arc force. .
第１図は２電榛を使用したこの発明の一実施例により仮
付溶接したときのアーク形態図を示し、図において１は
ソリッドワイヤを使用した先行電極、２はフラツクスコ
アードワイヤを使用した後行′Ｒ極、３は先行電極１の
アーク、５は後行電極２のアーク、４は溶融金属である
。Fig. 1 shows an arc configuration diagram when tack welding is performed by an embodiment of the present invention using two electrodes, and in the figure, 1 is a leading electrode using a solid wire, and 2 is a lead electrode using a flux-cored wire. In the trailing 'R' pole, 3 is the arc of the leading electrode 1, 5 is the arc of the trailing electrode 2, and 4 is the molten metal.
ビードの連続性は熱勾配を少ぐすることと、先行電極１
の後方へのプラズマ気流を押えることとで、母材と溶融
金属の温度差が少くなり連続ビードとなる。後行電極２
の溶接ワイヤとしてフランクスコアードワイヤを使用す
ると、第２図に示すように７ラツクスコアードワイヤ９
の溶滴１ａはワイヤ内部に充填されているフラックスの
影響によりかたまりとなって移行シフ、アーク５の幅が
広くなる。すなわちプラズマ気流がしぼられずエネルギ
が分散される。この後行電極２の幅が広がったアーク５
により先行電極１の後方へのプラズマ気流を押え、熱勾
配を少くすることができ安定した溶融金属４の湯だまシ
を作ることができる。The continuity of the bead reduces thermal gradients and
By suppressing the plasma airflow to the rear of the molten metal, the temperature difference between the base metal and the molten metal is reduced, resulting in a continuous bead. Trailing electrode 2
When a flank cored wire is used as a welding wire, a 7 lux cored wire 9 is used as a welding wire as shown in Fig. 2.
The droplets 1a form a lump due to the influence of the flux filled inside the wire, resulting in a transition shift and the width of the arc 5 becoming wider. In other words, the plasma airflow is not constricted and the energy is dispersed. The arc 5 in which the width of the trailing electrode 2 has expanded
This suppresses the plasma airflow behind the leading electrode 1 and reduces the thermal gradient, making it possible to create a stable pool of molten metal 4.
したがって、仮付溶接速度を増しても、ビードの形成が
安定しており、高速度においても連続してなめらかな溶
接ビードを得ることができる〇上記実施例により板厚１
２−の鋼板を用いて、開先角度９０度、深さ４市のＹ開
先に対して身体的に仮付溶接を行ない、不整ビードな生
じないＭ接速変の限界を求めた結果、溶接速度限界は約
１０ｍ／分とな９、従来例の２電唖で仮付溶接を行なっ
た場合の６ｍ／分と比し格段の向上を図ることができる
。なお上記仮付溶接は先行電極１の溶接電流は１５００
Ａ、後行電極２の溶接電流は４００Ａの場合で・ある。Therefore, even if the tack welding speed is increased, the bead formation is stable, and a smooth weld bead can be obtained continuously even at high speeds.
Using the steel plate No. 2-2, we physically tack welded a Y groove with a groove angle of 90 degrees and a depth of 4 degrees, and found the limit of M contact speed variation that would not cause irregular beads. The welding speed limit is about 10 m/min,9 which is a significant improvement over the 6 m/min when tack welding is performed with two electrodes in the conventional example. In addition, in the above tack welding, the welding current of the preceding electrode 1 was 1500
A: The welding current of the trailing electrode 2 is 400A.
この発明は以上説明したように、複数の′市、極を使用
する仮付溶接方法だおいて、先行電極の浴接ワイヤにソ
リッドワイヤを使用し、後行電極の溶接ワイヤに７ラツ
クスコアードワイヤを使用して、各電極の作用？有効に
発揮させることにより、電極間に溶融金属の湯だまりを
安定に形成せしめることができ、連続したなめらかな溶
接ビードを高速度で形成することができる。また連続し
た溶接ビード形成によシ本溶接時の溶接線倣いが容易に
なると共に本溶接時の溶接欠陥発生を防止することもで
きる。As explained above, this invention is a tack welding method using a plurality of electrodes, in which a solid wire is used for the bath welding wire of the leading electrode, and a 7 lux cored welding wire is used for the welding wire of the trailing electrode. The action of each electrode using a wire? When used effectively, a pool of molten metal can be stably formed between the electrodes, and a continuous and smooth weld bead can be formed at high speed. Further, by forming a continuous weld bead, it becomes easy to trace the weld line during main welding, and it is also possible to prevent weld defects from occurring during main welding.
第１図はこの発明の実殉例のアークの形態図、第２図は
フランクスコアードワイヤのアーク形Ｗ図、第５図は従
来例のアーク形態図、第４図はソリッドワイヤのアーク
形態図である。
１・・・先行電極、２・・・後行電極、３，５，８・・
・アーク、４・・・溶融金属、６・・・ソリッドワイヤ
、７．１０・・・溶滴、 ？・・・フランクスコアード
ワイヤ。
代理人 弁理士 木 村 三 明
第１図
第２図
第４図
第３図Figure 1 is a diagram of the arc shape of an actual example of this invention, Figure 2 is a W diagram of the arc shape of a flank scored wire, Figure 5 is a diagram of the arc shape of a conventional example, and Figure 4 is the shape of the arc of a solid wire. It is a diagram. 1... Leading electrode, 2... Trailing electrode, 3, 5, 8...
・Arc, 4... Molten metal, 6... Solid wire, 7.10... Droplet, ? ... Frank Scored Wire. Agent Patent Attorney Miaki KimuraFigure 1Figure 2Figure 4Figure 3
Claims (1)
溶接方法において、先行電極の溶接ワイヤにソリッドワ
イヤを使用し、後行電極の溶接ワイヤにフラックスコア
ードワイヤを使用して仮付溶接を行なうことを特徴とす
る高速仮付溶接方法。In a welding method that uses multiple electrodes to perform tack welding of base metals at high speed, tack welding is performed by using a solid wire for the welding wire of the leading electrode and a flux-cored wire for the welding wire of the trailing electrode. A high-speed tack welding method characterized by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18378184A JPS6163363A (en) | 1984-09-04 | 1984-09-04 | High speed tack welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18378184A JPS6163363A (en) | 1984-09-04 | 1984-09-04 | High speed tack welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6163363A true JPS6163363A (en) | 1986-04-01 |
| JPH0215313B2 JPH0215313B2 (en) | 1990-04-11 |
Family
ID=16141826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18378184A Granted JPS6163363A (en) | 1984-09-04 | 1984-09-04 | High speed tack welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6163363A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63154267A (en) * | 1986-12-17 | 1988-06-27 | Nkk Corp | High-speed gas shielded arc welding method |
-
1984
- 1984-09-04 JP JP18378184A patent/JPS6163363A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63154267A (en) * | 1986-12-17 | 1988-06-27 | Nkk Corp | High-speed gas shielded arc welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0215313B2 (en) | 1990-04-11 |
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