JPS60118386A - Submerged arc welding method - Google Patents
Submerged arc welding methodInfo
- Publication number
- JPS60118386A JPS60118386A JP22714783A JP22714783A JPS60118386A JP S60118386 A JPS60118386 A JP S60118386A JP 22714783 A JP22714783 A JP 22714783A JP 22714783 A JP22714783 A JP 22714783A JP S60118386 A JPS60118386 A JP S60118386A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- wire
- welding
- generated
- electrode
- 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.)
- Pending
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
- B23K9/18—Submerged-arc welding
- B23K9/186—Submerged-arc welding making use of a consumable electrodes
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】
この発明は、高能率化を図ったサブマージアーク溶接法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a submerged arc welding method that is highly efficient.
サブマージアーク浴接は、他のアーク溶接に比較して電
極ワイヤに大電流を通し得るので、高能率ナプロセスと
して一般に広く使用されている。Submerged arc bath welding is generally widely used as a high-efficiency process because it allows a large current to pass through the electrode wire compared to other arc welding methods.
最近はより一層の高能率化を目的として多電極化が進め
られておシ、既に４電極法が笑用化されている。Recently, the use of multiple electrodes has been promoted for the purpose of further increasing efficiency, and the four-electrode method has already been put into practice.
単電極で大電流、高速溶接を行うと、強いアーク力のた
めにアーク後方の溶融金属が吹き飛ばされてアンダーカ
ット、ハンピング等の溶接欠陥が多発する。多電極化は
、この強いアーク力を各電極に分担させて一単極当りの
アーク力を弱めることになるのでアーク後方の溶融金属
の吹き飛ばしが緩和されて溶接欠陥の回避に効果がある
。When high-current, high-speed welding is performed with a single electrode, the molten metal behind the arc is blown away due to the strong arc force, resulting in frequent welding defects such as undercuts and humping. Multi-electrode distribution allows each electrode to share this strong arc force and weakens the arc force per single pole, which reduces the blowing of molten metal behind the arc and is effective in avoiding welding defects.
しかし電極数の増大に伴ない多電極化による高速化の効
果の向上は次第に少なくなシ、それどころか逆に多電極
化による入熱量の増大という問題が生じてくる。例えば
溶接継手性能の面から低入熱化が必要な厚板の多層盛溶
接では、入熱量が増大する多電極法は適用できず、能率
の劣る単電極法によらざるを得ないというのが実状であ
る。However, as the number of electrodes increases, the improvement in the speed-up effect due to the multi-electrode process gradually decreases, and on the contrary, a problem arises in that the amount of heat input increases due to the multi-electrode process. For example, in multi-layer welding of thick plates, which requires low heat input from the viewpoint of weld joint performance, the multi-electrode method, which increases the heat input, cannot be applied, and the single-electrode method, which is less efficient, has to be used. This is the actual situation.
また溶接ロボット等の自動化を考えた場合、電極数の増
大は制御因子の増加を招き、極めて複雑な制御機構を必
要とするようになる等の不利をもたらす。Furthermore, when considering automation of welding robots and the like, an increase in the number of electrodes leads to an increase in control factors, resulting in disadvantages such as the need for an extremely complicated control mechanism.
上記に鑑み本発明者らは、電極数増加の手段によらず一
電極に大電流を使用し々から溶接欠陥のないサブマージ
アーク溶接を行うためには、強い７−”力の方向を前方
に偏向させてアーク力による後方の溶融金属の吹き飛ば
しを解消し溶接欠陥の防止を図れば良いと考え、この考
え方に基いて種々実験研究を重ねた。その結果、被密接
材と略々同電位に印加したフィラーワイヤをアーク発生
域の前方に臨ましめて、フィラーワイヤと電極ワイヤと
の開に別のアークを継続発生せしめながら溶接を行うと
、アーク力が全体として前方に偏向したことになシ、後
方の溶融金属の吹き飛ばしが回避されるという事実が判
明した。In view of the above, the present inventors have determined that in order to perform submerged arc welding without welding defects by constantly using a large current for one electrode, regardless of the means of increasing the number of electrodes, the direction of the strong 7-" force must be directed forward. We thought that it would be a good idea to deflect the molten metal from behind due to the arc force and prevent welding defects, and based on this idea, we conducted various experimental studies.As a result, we found that the molten metal was deflected at approximately the same potential as the material being contacted. If the applied filler wire is placed in front of the arc generation area and welding is performed while another arc is continuously generated between the filler wire and the electrode wire, the arc force as a whole is deflected forward. It has been found that the blowing of molten metal at the rear is avoided.
すなわち本発明は、サブマージアーク溶接において、ア
ーク発生域前方直近に被溶接材と略々同電位となるよう
に結線されたフィラーワイヤを臨ましめ、フィラーワイ
ヤと電極ワイヤ間にアークを断続的に発生させながら溶
接を行うことを特徴とするサブマージアーク溶接法を要
旨とする。That is, in submerged arc welding, the present invention places a filler wire connected immediately in front of the arc generating area so as to have approximately the same potential as the welded material, and intermittently generates an arc between the filler wire and the electrode wire. This article focuses on the submerged arc welding method, which is characterized by performing welding while generating electricity.
本発明方法においてフィラーワイヤを用いる目的は、フ
ィラーワイヤと電極ワイヤとの間に、電極ワイヤと被溶
接材との間のアーク（以下主アークという）とは別のア
ーク（以下側アークという）を断続的に発生させること
によって全体のアークの方向を前方に偏向させることに
あるが、このことから主アーク発生域の前方でフィラー
ワイヤの溶融が行われ断続的に副アークが発生するよう
にフィラーワイヤの位置および送給速度を制御する必要
がある。この制御はオッシログラフによる副アークのＦ
！ｆｒ続的な発生状況の検出によって容易に行うことが
可能である□
以下図面に基いて本発明の方法を詳細に説明する。The purpose of using a filler wire in the method of the present invention is to create an arc (hereinafter referred to as a side arc) between the filler wire and the electrode wire that is different from the arc between the electrode wire and the workpiece (hereinafter referred to as the main arc). The aim is to deflect the direction of the entire arc forward by causing it to occur intermittently.For this reason, the filler wire is melted in front of the main arc generation area and a sub-arc is generated intermittently. Wire position and feeding speed need to be controlled. This control is based on the F of the secondary arc using an oscilloscope.
! This can be easily carried out by continuously detecting occurrence conditions. The method of the present invention will be explained in detail below with reference to the drawings.
第１図は本発明方法を実施する装置の一例を示した説明
図である。図において、（１）は電極ワイヤ、（２１は
被溶接材、（３）はフラックスであシ、サブマージアー
ク溶接は、図示の如＜、Ｓ溶接材（２）の表面に散布し
たフラックス（３）の中に電極ワイヤ（１）を突込んで
被溶接材（２Ｊとの間にアーク（４）を発生せしめて行
われ、アーク（４）の後方に溶融金属（５）および溶接
ビード（６）、溶融スラグ（７）が形成される。FIG. 1 is an explanatory diagram showing an example of an apparatus for carrying out the method of the present invention. In the figure, (1) is an electrode wire, (21 is a material to be welded), and (3) is a flux. ) into the welding material (2J) to generate an arc (4) between the electrode wire (1) and the material to be welded (2J), and the molten metal (5) and weld bead (6) behind the arc (4). , a molten slag (7) is formed.
（８）はフィラーワイヤで、これは給電チップ（９）に
より電源に接続されており、溶接に当っては被浴接材（
２）と略々同電位となるように給電される。α０はこの
フィラーワイヤ（８）の送給装置である。(8) is a filler wire, which is connected to the power supply by the power supply tip (9), and during welding, the filler wire (
2) is supplied so that it has approximately the same potential as that of 2). α0 is a feeding device for this filler wire (8).
溶接時、上記フィラーワイヤ（８）は、溶接方向前方か
らアーク（４）発生域に向けて被溶接材表面と平行に近
い角度で散布フラックス（３〕中に突込んでアーク（４
）発生域の前方直近に臨ましめ、フィラーワイヤ（８）
と電極ワイヤ（１）との間で副アーク（イ）の断続的な
発生がおこるようにしてやる。溶接中、この副アーク断
続発生の位置関係をつねに維持するように、フィラーワ
イヤ（８）は副アークによる溶融に従って送給装置ＱＯ
によシ順次送り込んでやる。このようなフィラーワイヤ
（８）の位置決め、送給の操作は、オッシログラフを用
いてフラックス中の副アーク発生状況を確認しながら送
給装置α１の送シを制御してやれば、容易に実現し得る
ものである。During welding, the filler wire (8) plunges into the sprinkled flux (3) from the front in the welding direction toward the arc (4) generation area at an angle close to parallel to the surface of the welded material and generates the arc (4).
) Close the filler wire (8) directly in front of the outbreak area.
A sub-arc (a) is caused to occur intermittently between the electrode wire (1) and the electrode wire (1). During welding, the filler wire (8) is melted by the secondary arc so that the positional relationship of the secondary arc intermittent generation is always maintained.
I'll send them in one by one. Such positioning and feeding operations of the filler wire (8) can be easily realized by controlling the feeding of the feeding device α1 while checking the occurrence of sub-arc in the flux using an oscilloscope. It is something.
なおフィラーワイヤ（８）としては、通常の中実ワイヤ
またはフラックス内包のコアードワイヤのいずれでもよ
く、また中空、帯状等適当な形状のワイヤを用いて差支
えない。The filler wire (8) may be either a normal solid wire or a cored wire containing flux, and may be a hollow wire, a wire in a band shape, or any other suitable shape.
次に笑施例を掲げて本発明方法の効果を説明する。Next, the effects of the method of the present invention will be explained with reference to Examples.
突施例１
１２履厚Ｘ２００７Ｉｍ巾Ｘ１５００７１ａ長ノＳＭ
４１Ａの鋼板に、単電極サブマージアーク溶接法によシ
、第１表に示す成分の溶接ワイヤを使用し、第２表に示
す溶接条件によって従来例としてのビードオンプレート
の溶接試験を行うとともに、第１図に示すフィラーワイ
ヤ（８）として外径６ｍ！！、内径５聰ｆの中空ワイヤ
を使用して、本発明法によるビードオンプレートの溶接
試験を行い、従来例と本発明例において正常なビードが
得られる最大の溶接速度（溶接可能速度と云う）の比較
を行った。Projection Example 1 12 Thickness x 2007Im Width x 150071a Length SM
A conventional bead-on-plate welding test was conducted on a 41A steel plate using the single-electrode submerged arc welding method, using a welding wire with the components shown in Table 1, and under the welding conditions shown in Table 2. The filler wire (8) shown in Figure 1 has an outer diameter of 6 m! ! A bead-on-plate welding test using the method of the present invention was conducted using a hollow wire with an inner diameter of 5 mm. A comparison was made.
第 １ 表
第 ２ 表
上記試験では、正常なビードが得られる溶接可能速度は
、従来例で約８０ ”／ｍｊ−１１であったものが、本
発明例では１．５ ｍ／ｍｉｎとなり、本発明法の適用
により約８７％も向上した。Table 1 Table 2 In the above test, the possible welding speed to obtain a normal bead was approximately 80"/mj-11 in the conventional example, but it was 1.5 m/min in the example of the present invention, which was faster than the present invention. Application of the invented method resulted in an improvement of approximately 87%.
更にまた、上記フィラーワイヤ（８）を第３図に示すよ
うに被溶接物（２）に対しより大きな角度をなすように
して同様の溶接試験を行ってみたが、この場合も溶接可
能速度は先の試験と同様１．５ Ｉｎ／ｍ１ｎであった
。Furthermore, a similar welding test was conducted with the filler wire (8) at a larger angle to the workpiece (2) as shown in Figure 3, but in this case as well, the possible welding speed was It was 1.5 In/ml as in the previous test.
実施例２
実施例１と同寸法の５Ｍ４１Ａの鋼板に、２電極サブマ
ージアーク溶接法により、第１表に示す成分の溶接ワイ
ヤを使用し、第３表に示す溶接条件によって従来例のビ
ードオンブレートの溶接試験を行うとともに、第２図に
示すように先行電極（１）のアーク発生域の前方直近に
外径４．８ ａ ＄の中火フイヲーワイヤ（８）を臨ま
しめて、本発明法によるビードオンブレートの溶接試験
を行い、従来例と本発明例において前記同様溶接可能速
度の比較を行った。Example 2 A 5M41A steel plate with the same dimensions as Example 1 was welded using a two-electrode submerged arc welding method using a welding wire with the components shown in Table 1, and under the welding conditions shown in Table 3. A welding test was carried out using the method of the present invention, and a medium flame wire (8) with an outer diameter of 4.8 mm was placed immediately in front of the arc generating area of the leading electrode (1) as shown in Fig. 2. An on-brate welding test was conducted, and the welding speeds of the conventional example and the example of the present invention were compared in the same manner as described above.
第 ３ 表
その結果、正常など一ドが得られる溶接可能速度は、従
来例で約１．５ ｍ／ｍｉｎであったものが、本発明例
では２ ｍ／ｍｉｎとなり、本発明方法の適用によシ約
３３％の向上を認めた。Table 3 As a result, the possible welding speed for obtaining a normal welding speed was about 1.5 m/min in the conventional example, but it was 2 m/min in the example of the present invention, which is suitable for application of the method of the present invention. An improvement of approximately 33% was observed.
以上の説明から明らかなように本発明の方法は、大電流
による高速サブマージアーク溶接における溶接欠陥の発
生をきわめて有効に防止し得るものであり、したがって
本発明はとくに溶接継手性能等の面から電極数の増加が
不可能なサブ“マージアーク溶接における能率の向上に
大いに寄与するものである。As is clear from the above description, the method of the present invention can extremely effectively prevent the occurrence of welding defects in high-speed submerged arc welding using large currents. This greatly contributes to improving efficiency in sub-merged arc welding, where it is impossible to increase the number of welds.
第１図、第２図および第３図は本発明方法を実施する装
置の一例をそれぞれ示した説明図である。FIGS. 1, 2, and 3 are explanatory diagrams each showing an example of an apparatus for carrying out the method of the present invention.
Claims (1)
前方直近に、被溶接材と略々同電位となるように結線さ
れたフィラーワイヤを臨ましめ、このフィラーワイヤと
電極ワイヤ間にアークを断続的に発生させながら溶接を
行うことを特徴とするサブマージアーク溶接法。(1) In submerged arc welding, a filler wire connected so as to have approximately the same potential as the material to be welded is placed immediately in front of the arc generation area, and an arc is intermittently applied between the filler wire and the electrode wire. A submerged arc welding method that is characterized by welding while generating arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22714783A JPS60118386A (en) | 1983-11-30 | 1983-11-30 | Submerged arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22714783A JPS60118386A (en) | 1983-11-30 | 1983-11-30 | Submerged arc welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60118386A true JPS60118386A (en) | 1985-06-25 |
Family
ID=16856223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22714783A Pending JPS60118386A (en) | 1983-11-30 | 1983-11-30 | Submerged arc welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60118386A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0253881U (en) * | 1988-10-04 | 1990-04-18 | ||
| JP2007182821A (en) * | 2006-01-10 | 2007-07-19 | Anest Iwata Corp | Booster type gas compressor |
| CN103464876A (en) * | 2013-07-24 | 2013-12-25 | 武汉一冶钢结构有限责任公司 | Submerged-arc welding method for P690QL1 and Q370R dissimilar steel |
-
1983
- 1983-11-30 JP JP22714783A patent/JPS60118386A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0253881U (en) * | 1988-10-04 | 1990-04-18 | ||
| JP2007182821A (en) * | 2006-01-10 | 2007-07-19 | Anest Iwata Corp | Booster type gas compressor |
| CN103464876A (en) * | 2013-07-24 | 2013-12-25 | 武汉一冶钢结构有限责任公司 | Submerged-arc welding method for P690QL1 and Q370R dissimilar steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6469277B1 (en) | Method and apparatus for hybrid welding under shielding gas | |
| JP2015526295A (en) | Hybrid welding system and welding method using a wire feeder arranged between a laser and an electric arc welder | |
| JPWO2010021094A1 (en) | Composite welding method and composite welding apparatus | |
| JP2012254469A (en) | Two-electrode welding method | |
| JP2007237225A (en) | High-speed hot wire multi-electrode tig welding method of thin steel plate | |
| JP4749555B2 (en) | Three-electrode arc welding control method | |
| JP2001246465A (en) | Gas shielded-system arc welding method | |
| JPS60118386A (en) | Submerged arc welding method | |
| JP2002144064A (en) | Method and equipment for welding metallic member | |
| JP3423467B2 (en) | High speed gas shielded arc welding apparatus and method | |
| JPS6072678A (en) | High-speed arc welding method | |
| JP2003053545A (en) | Tandem arc welding method | |
| US4035605A (en) | Narrow groove welding method, and welding apparatus for practicing the method | |
| JPH0453617B2 (en) | ||
| JPH07204854A (en) | High speed gas shield arc welding equipment and method therefor | |
| JP2001198689A (en) | Method of laser welding for aluminum material | |
| JP4483362B2 (en) | Laser hybrid arc welding system | |
| JP2007237224A (en) | Tig welding method of thin steel plate | |
| JP3367791B2 (en) | High-speed horizontal fillet welding method | |
| JPS5573479A (en) | Tandem system high speed arc welding method | |
| JPH11147175A (en) | Gas shield arc welding method | |
| US4100389A (en) | Method of high speed gas shielded arc welding | |
| JPS6048271B2 (en) | Arc welding method | |
| JPS6331305B2 (en) | ||
| JPH09314334A (en) | High speed gas shield arc welding equipment and method therefor |