JPH02207971A - Gas shielded arc welding method - Google Patents
Gas shielded arc welding methodInfo
- Publication number
- JPH02207971A JPH02207971A JP2673889A JP2673889A JPH02207971A JP H02207971 A JPH02207971 A JP H02207971A JP 2673889 A JP2673889 A JP 2673889A JP 2673889 A JP2673889 A JP 2673889A JP H02207971 A JPH02207971 A JP H02207971A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- welding
- wire
- large current
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 10
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 13
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 32
- 239000007787 solid Substances 0.000 claims description 8
- 239000011324 bead Substances 0.000 abstract description 20
- 239000002184 metal Substances 0.000 abstract description 13
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000010953 base metal Substances 0.000 abstract description 4
- 238000007712 rapid solidification Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はソリッドワイヤを使用する上向片面溶接方法に
関し、特に開先変動が大きくても安定した凸形の裏波ビ
ードを形成することができ、同時に平滑な表と一ドが得
られろガスシールドアーク溶接方法に関するものである
。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an upward single-sided welding method using a solid wire, and in particular, it is capable of forming a stable convex uranami bead even with large groove fluctuations. The present invention relates to a gas-shielded arc welding method that can produce a smooth surface and a flat surface at the same time.
（従来の技術）
造船における船底外板や橋梁における大ブロックの建造
等に当たっては、上向姿勢で行なわなければならない溶
接箇所がある。ところが上向姿勢の溶接では溶接金属の
溶は落ちが発生しやすく、溶接の中断を余儀なくされる
事が多い。(Prior Art) When constructing a bottom shell plate in shipbuilding or a large block for a bridge, there are some welding points that must be performed in an upward position. However, when welding in an upward position, the weld metal tends to drop, and welding is often forced to be interrupted.
従って、溶接欠陥が生じた場合、溶接箇所の裏面側から
下向姿勢で溶接（補修溶接を含む）を実施しなければな
らなくなり、余分な工程や工数が増えてしまう。Therefore, when a welding defect occurs, welding (including repair welding) must be performed from the back side of the welded part in a downward position, which increases extra steps and man-hours.
そこで上向片面溶接においても良好な溶接継手を得るこ
とのできる方法について色々の工夫及び提案がなされて
いるが、実用面において完壁、と言えるものは未だ知ら
れていない。Therefore, various ideas and proposals have been made regarding methods for obtaining a good welded joint even in upward single-sided welding, but there is still no known method that can be said to be perfect in practical terms.
その原因の１つとしては、母材の開先形状が一定でない
ことを挙げることができる。One of the reasons for this is that the groove shape of the base material is not constant.
即ち、母材間のルートギャップが小さすぎると裏波ビー
ドが形成されず、反対にルートギャップが大きすぎると
裏波ビードにへこみが生じたり、或いは表ビードに凸部
が生じ、次ノーでの溶込み不そこで例えば特開昭４８−
５６５４３号公報では、開先中の変動を打消し得るよう
な巾にｇａされた薄鋼板をルートギャップ内に挿入する
という試みがなされているが、この様な条件を満足する
薄鋼板を形成することは実用上殆んど不可能である。That is, if the root gap between the base materials is too small, the uranami bead will not be formed, and on the other hand, if the root gap is too large, a dent will occur in the uranami bead, or a convex part will be formed on the front bead, which will cause problems in the next no. For example, JP-A-48-
In Japanese Patent No. 56543, an attempt is made to insert a thin steel plate with a width that is large enough to cancel out fluctuations during beveling into the root gap, but it is difficult to form a thin steel plate that meets these conditions. This is practically impossible.
又、真当材として一般に使用されているガラステープ状
の物を上向溶接に使用した場合、融点が低く粘性が乏し
いため溶融金属が表側に下がる。Furthermore, when a glass tape-like material, which is commonly used as a bracing material, is used for upward welding, the melting point is low and the viscosity is poor, so the molten metal falls to the front side.
したがって、裏波ビードはへこみを生じ、凸形状の裏波
ビードは得られない・
（発明が解決しようとする課題）
立向姿勢や上向姿勢の溶接では、ソリッドワイヤを用い
た一定電流による短絡移行（ショートアーク）溶接が採
用されることがある。短絡移行ではアーク電圧を低くシ
、アーク長を短かくして安定移行させるのであるが、溶
融金属の垂れ落ちを防止するには、小１流で溶接しなけ
ればならない。Therefore, the uranami bead is concave, and a convex-shaped uranami bead cannot be obtained. (Problem to be solved by the invention) When welding in a vertical or upward position, short circuits caused by a constant current using a solid wire can be avoided. Transition (short arc) welding may be employed. In short-circuit transition, the arc voltage is lowered and the arc length is shortened to achieve stable transition, but in order to prevent molten metal from dripping, it is necessary to weld with a small flow.
従って、実質的な電流は１４０〜１６０Ａで、アーク電
圧は１４〜１６Ｖ程度の比較的狭い範囲となり、この範
囲を外れるとアークが不安定となって、安定溶接の連続
溶接が困難となる。Therefore, the actual current is 140 to 160 A, and the arc voltage is in a relatively narrow range of about 14 to 16 V. Outside this range, the arc becomes unstable and stable continuous welding becomes difficult.
さらに、一定電流により上向姿勢の片面溶接を実施した
場合、母材の許容ルートギャップ範囲が狭い（実質上４
±Ｉ Ｉｌｌ ）という問題があり、母材間のルートギ
ャップが一定しない上向溶接には不向きであり、実用性
に乏しい。Furthermore, when performing single-sided welding in an upward position with a constant current, the permissible root gap range of the base metal is narrow (virtually 4
±I Ill ), which makes it unsuitable for upward welding where the root gap between the base metals is not constant, and is therefore impractical.
また、一般に市販されている裏当材は下向姿勢用として
ガラステープを使用した物が多く、上記の様な真当材を
使って上向片面溶接を実施した場合、裏波ビードが凹状
となり、へこみの部分を下向溶接で補修しなければなら
ない。In addition, many commercially available backing materials use glass tape for downward positioning, and when upward single-sided welding is performed using the above-mentioned true backing material, the backing material becomes concave. , the dented area must be repaired by downward welding.
そこで本発明者等はルートギャップの変動を伴う開先で
あっても、上向姿勢で安定した凸状の裏波ビードが連続
して得られる片面溶接方法を提供すべく、種々研究を積
み重ねた結果、本発明を完成させるに至った。Therefore, the present inventors have conducted various studies in order to provide a single-sided welding method that can continuously obtain a stable convex uranami bead in an upward position even in a groove with fluctuations in the root gap. As a result, the present invention was completed.
（！！１題を解決するための手段）
上記目的を達成し得た本発明の要旨は、ソリッドワイヤ
を用いる上向片面溶接において、開先裏面に長手方向に
連続的な溝を有したコーディエライト質のセラミックス
タイプの裏当材を設置し、ワイヤを溶接線と直角方向に
周期的に揺動し、開先壁面部で揺動を停止すると共に大
電流を発生させ、その他の部分を小電流にして溶接する
ことを特徴とするガスシールドアーク溶接方法である。(!!Means for Solving Problem 1) The gist of the present invention that has achieved the above object is that in upward single-sided welding using a solid wire, a cord having continuous grooves in the longitudinal direction on the back surface of the groove is used. A backing material made of elite ceramic type is installed, and the wire is oscillated periodically in a direction perpendicular to the weld line, and the oscillation is stopped at the groove wall and a large current is generated to move the other parts. This is a gas shielded arc welding method characterized by welding using a small current.
（作 用）
本発明は溶接−電流を大電流、小電流に周期的に変化さ
せると共に、溶接進行方向に対してワイヤを°周期的に
横に交互に動かしてワイヤを揺動運動させて、その揺動
運動の各周期ではワイヤの開先壁面部で一時的に停止さ
せ、その−時停止時期と大電流又は小電流時点とを同期
させて、コーディエライト質のセラミックスタイプの裏
当材を溶かして溶接を行なうものである。(Function) The present invention periodically changes the welding current into a large current and a small current, and at the same time, periodically moves the wire horizontally and alternately with respect to the welding progress direction to cause the wire to swing, At each period of the oscillating movement, the wire is temporarily stopped at the groove wall, and the stopping time and the high current or low current time are synchronized, and the backing material is made of cordierite ceramic type. Welding is performed by melting.
本発明で使用するワイヤをソリッドワイヤに限定したの
は、ブラックス入りワイヤを使用して一定電流で上向溶
接した場合、スプレー移行させてスパッタ発生量をでき
るだけ少なくするためには、大電流で溶接しなければな
らない。大電流で上向溶接を行なった場合、溶融金属の
垂れ落ちが発生し、良好なビード形成が非常に難かしい
。The reason why the wire used in the present invention is limited to solid wire is that when upward welding is performed using a black-cored wire at a constant current, it is necessary to use a large current to reduce the amount of spatter generated by spray transfer. Must be welded. When upward welding is performed with a large current, molten metal drips and it is very difficult to form a good bead.
又、電流を大、小に変化させて溶接した場合、溶滴移行
がグロビュラー移行とスプレー移行が繰り返されるため
、グロビュラー移行時および溶滴移行変化時に、上向溶
接で障害となる大粒のスパッタが発生し、ワイヤ送給不
良やシールド不足が起る。In addition, when welding by changing the current from large to small, droplet transfer repeats globular transfer and spray transfer, so during globular transfer and change in droplet transfer, large spatter that becomes an obstacle in upward welding is generated. This can lead to poor wire feeding and insufficient shielding.
ソリッドワイヤの場合は、電流を大、小に変化させても
その影響が少なく、特に問題がない。In the case of solid wires, even if the current is changed from large to small, the effect is small and there is no particular problem.
以下、図によって詳細に説明する。This will be explained in detail below with reference to the drawings.
第１図は、水平母材５ａ・５ｂを上向片面溶接する場合
の説明図である。FIG. 1 is an explanatory diagram when horizontal base materials 5a and 5b are welded upward on one side.
水平母材５ａ・５ｂの開先裏面に長手方向に連続的な溝
を有したコーディエライト質のセラミックスタイプの裏
当材６を設置し、上向溶接を行う。A cordierite ceramic type backing material 6 having continuous grooves in the longitudinal direction is installed on the back surface of the grooves of the horizontal base materials 5a and 5b, and upward welding is performed.
ワイヤの揺動運動の各周期における停止および移動につ
いては、大電流アーク時間Ｔに開先壁面でワイヤの揺動
を停止させて大ａｎアーク１ａ・ｌｂを発生し、小電流
アーク時間ｔに小電流アーク２ａａ２ｂを発生させなが
ら開先内を移動して、反対側の開先面まで達し、次の大
電流アーク時間Ｔに該壁面で大電流アーク３ａ・３ｂを
発生させる。Regarding the stopping and movement of the wire in each cycle of the oscillating motion, the oscillation of the wire is stopped at the groove wall surface during the large current arc time T to generate a large an arc 1a/lb, and the small arc is caused to occur during the small current arc time t. It moves within the groove while generating current arcs 2aa2b, reaches the groove surface on the opposite side, and generates large current arcs 3a and 3b on the wall surface during the next large current arc time T.
通常、ワイヤの揺動運動は停止させないで連続的に移動
させて行うのが普通であるが、本発明にＫいては特に溶
着金属量の制御、溶込みの制御、溶融−凝固状況の制御
により耐割れ性を向上させるため、溶接電流の変化と同
期させてワイヤの揺動運動を上記の如く停止および移動
させる。Normally, the oscillating motion of the wire is carried out by continuously moving it without stopping, but in the present invention, in particular, it is possible to control the amount of welded metal, control the penetration, and control the melting-solidification situation. To improve cracking resistance, the oscillating movement of the wire is stopped and moved as described above in synchronization with the change in welding current.
本発明における揺動運動は両端停止型であれば、その軌
跡はどのような型であっても良い。何故なら電極の主た
る溶融は大電流アーク時に行っており、小電流アーク時
には大電流溶融池の凝固促進が目的でいかなる経路をと
っても、この時の電極溶融量は少ないので全体としてビ
ード形成に与える影響は無視できるからである。The swing motion in the present invention may have any type of locus as long as it is stopped at both ends. This is because the main melting of the electrode occurs during high-current arcing, and no matter what route is taken during low-current arcing to promote solidification of the high-current molten pool, the amount of electrode melting at this time is small, so it has no effect on bead formation as a whole. This is because it can be ignored.
このように大電流溶融池の急速凝固によって従来法に比
し、格段に溶接金属を開先に平滑に溶着させることが可
能となる。As described above, the rapid solidification of the large current molten pool makes it possible to weld the weld metal to the groove much more smoothly than in the conventional method.
本発明で使用する裏当材はコーディエライト質のセラミ
ックスタイプであるが、第２図に示すようにコーディエ
ライトはＭｇＯＡＡｔＯｓ ５ｌｏｔの三成分系の中
央にあり、五つの共融点をむすんだ線で凹まれている範
囲である。The backing material used in the present invention is a cordierite ceramic type, and as shown in Figure 2, cordierite is located in the center of the ternary system of 5 lots of MgOAAtOs, and the line connecting the five eutectic points. This is the range concave.
コーディエライト質の裏当材は、従来使用されているガ
ラステープ又はガラステープ併用（融点約９００−１０
００℃）の真当材に比べ、融点が高い（融点約１４００
−１５００℃）ため粘性が大きい。Cordierite backing material can be used with conventional glass tape or glass tape (melting point approximately 900-10
It has a higher melting point (approximately 1400℃) than the true material at
-1500°C), so the viscosity is high.
したがって溶接中、溶融金属と溶融スラグが分離しにく
くなり、適度なスラグの流動性および溶接電流の大小変
化の効果により、溶融金属が垂れ下がる前に凝固でき、
凸型の光沢のある良好な裏波ビードが得られる。Therefore, during welding, the molten metal and molten slag are difficult to separate, and due to the appropriate fluidity of the slag and the effect of changes in the welding current, the molten metal can solidify before it sag.
A convex, glossy and good Uranami bead can be obtained.
本発明に使用する開先形状は溶込み形状からＶ型開光が
好ましく、開先角度θは３０〜５０度、ルートギャップ
ｂは３〜１０Ｍ１Ｌ程度が適当である。The groove shape used in the present invention is preferably a V-shaped opening due to the penetration shape, the groove angle θ is suitably 30 to 50 degrees, and the root gap b is suitably about 3 to 10 M1L.
一般に大電流アーク時間Ｔ、小電流アーク時間ｔは０．
１〜２．０秒が好ましい。Generally, the large current arc time T and the small current arc time t are 0.
1 to 2.0 seconds is preferable.
本発明に使用する溶接電流値は例えば１．２朋のソリッ
ドワイヤを使用して片面溶接する場合、大電流は１４０
〜２６０Ａ、小電流値は１００−１３０Ａ程度が適正で
あり、大成流アーク時に溶込みを確保し、小成流アーク
時に凝固を促進することにより溶融金属の溶は落ちを防
止し、良好な上向片面溶接ができる。The welding current value used in the present invention is, for example, when welding one side using a 1.2 mm solid wire, the large current is 140 mm.
~260A, and a small current value of about 100-130A is appropriate, ensuring penetration during large flow arcs and promoting solidification during small flow arcs, preventing the molten metal from dripping, and providing a good upper current. Single-sided welding is possible.
（実施例） 実施例により本発明の効果を具体的に示す。(Example) Examples will specifically demonstrate the effects of the present invention.
本発明法と従来法とを以下に示す諸条件および第２表に
示す溶接条件で夾施し、結果の対比を行った。The method of the present invention and the conventional method were applied under the conditions shown below and the welding conditions shown in Table 2, and the results were compared.
く供試材料〉 試 ・挾 板：５Ｍ−４１Ｂ 形状は第３図の通り。Test material> Trial/Holder plate: 5M-41B The shape is as shown in Figure 3.
（ａ：９ｍ、ｊ）：第２表の通り、θ：５０°）浴接ワ
イヤ： ＪＩＳ Ｚ３３１２ ＹＧＷ１６ １．２
朋シールドガス：８０夕ｇ Ａ ｒ ２０ Ｘ ＣＯ
ｘ （混合ガス）流ｉｉ ２５７／ｍｉｎ
Ｍｋ 尚 材ニガラステープタイプ
：コーディエライト質のセラミックスタイプ 形状は第
４図の通り台形である。(a: 9m, j): As shown in Table 2, θ: 50°) Bath welding wire: JIS Z3312 YGW16 1.2
Tomo Shield Gas: 80 evening g A r 20 X CO
x (mixed gas) flow ii 257/min Mk Material Nigarasu tape type: cordierite ceramic type The shape is trapezoidal as shown in Figure 4.
（ｃ：２７ｍｍ ｄ 二８ｍ ｅ：１２ｍｍ
ｆ：１．ｏ Ｍｇ）成分を第１表に示す。(c: 27mm d 28m e: 12mm
f:1. o Mg) components are shown in Table 1.
表１ 裏当材の化学成分
くアーク条件〉
Ａ条件のｍ合： １４０Ａ−１５Ｖ
Ｂ条件の場合：大心流粂件・・・（１８０Ａ−１８Ｖ
Ｔｏ、３抄）小′Ｉｔ流条件−（１２０Ａ−１４Ｖ ｔ
ｌ、０秒）第２表
第２表においてＡ１〜８は比較例を示したもので、Ａｌ
〜４は裏当材としてガラステープタイプを使用、Ａ５〜
Ｂは裏当材としてコーディエライト質のセラミックスタ
イプを使用したものであり、４１とム５〜８はアーク条
件としてへ条件で、屋２〜４はアーク条件としてＢ条件
で上向片面溶接を実施したものである。Table 1 Chemical composition of backing material and arc conditions〉 For condition A: 140A-15V For condition B: Daishin flow condition... (180A-18V
To, 3 extracts) Small 'It flow conditions - (120A-14V t
1, 0 seconds) Table 2 In Table 2, A1 to A8 indicate comparative examples, and Al
～4 uses glass tape type as backing material, A5～
B uses a cordierite ceramic type as the backing material, 41 and 5 to 8 are arc conditioned to , and ya 2 to 4 are arc conditions to one side upward welding to B condition. This was carried out.
また、４９〜１２は本発明例を示したもので、いずれも
裏当材としてコーディエライト質のセラミックスタイプ
を使用し、アーク条件としてＢ条件で上向片面溶接を実
施したものである。Further, Nos. 49 to 12 show examples of the present invention, in which a cordierite ceramic type was used as the backing material, and upward single-sided welding was performed under B condition as the arc condition.
Ａｌ〜４は裏当材がガラステープタイプの場合で、アー
ク条件がＡ条件、Ｂ条件を使用しても、裏ピードが凹状
となり、いずれも良好な裏波ビードが得られない・
＆５〜８は裏当材がコーディエライト質のセラミックス
タイプ、アーク条件がＡ条件の場合であるが、ルートギ
ャップが狭すぎる場合（ム５）には裏に溶融金属が抜け
ず裏ビードが凹状となる。ルートギャップが広すぎる場
合（４７〜８）には、溶融金属が垂れ下がり、裏ビード
が凹状となり、ルートギャップが４ｙｘｘ程度でなけれ
ば良好なビード形状は得られない。Al~4 is when the backing material is a glass tape type, and even if arc conditions A and B are used, the back bead becomes concave and a good back bead cannot be obtained in either case. &5~8 This is the case where the backing material is a cordierite ceramic type and the arc condition is A condition, but if the root gap is too narrow (Mo 5), the molten metal does not pass through to the back side and the back bead becomes concave. If the root gap is too wide (47-8), the molten metal will sag and the back bead will become concave, and a good bead shape cannot be obtained unless the root gap is about 4yxx.
Ａ９〜１２は本発明実施例であり、表、農兵、良好なビ
ード形状及び溶接作業性を示した。A9 to A12 are examples of the present invention, and exhibited good bead shape and welding workability.
（発明の効果）
本発明により、従来ソリッドワイヤによる上向溶接にお
いて凸状の裏波ビードを得ることが非盾に難しいとされ
ていたルートギャップ変動の大きい部材であっても、安
定した連続的な上向溶接ができるようになり、表裏共、
良好なビード形状を得ることができ、上向片面溶接の自
動化が推進され船底ブロックの継手や橋梁等の大ブロッ
クの継手においても良好なビード形状および溶接作業性
を得ることが可能になった。(Effects of the Invention) The present invention enables stable and continuous welding even for members with large root gap fluctuations, for which it was considered extremely difficult to obtain a convex uranami bead in upward welding using conventional solid wires. It is now possible to perform upward welding on both the front and back sides.
A good bead shape can be obtained, and automation of upward single-sided welding has been promoted, making it possible to obtain a good bead shape and welding workability even in joints of bottom blocks of ships and joints of large blocks such as bridges.
第１図は本発明法により裏当材を設置し、時間経過とと
もに周期的に大電流アークと小電流アークを継続的に発
生し、それに同期して成極がウィービングしている様相
を示す模式図、第２図はＭｇ０−Ａｉ＊ｏ。
−５ｉｏ、の三成分系のコーディエライト範囲を示す状
態図、第３図は実施例に用いた試験板の形状を示す開面
図、第４図は実施例に用いたコーディエライト質のセラ
ミックスタイプの裏当材の形状を示す側面図である。
ｌ ａ、 １ ｂ、 ３ａ、 ３ｂ−−−大電流アーク
、２ ａ 、 ２ ｂ ・＝小。
電流アーク、４ａ、４ｂ１４Ｃ・・・電極、５ ａ 、
５ ｂ −・・母材、６・・・裏当材、７・・・溶接
金属、８・・・アルミ箔テープ、Ｔ・・・大電流アーク
時間、ｔ・・・小電流アーク時間、Ｈ・・・ウィービン
グ巾、Ｗ・・・溶接進行方向、ａ・・・板厚、ｂ・・・
ルートギャップ、θ・・・開先角度、Ｃ・・・裏当材の
巾、ｄ・・・裏当材の厚み、ｅ・・・裏当材の溝巾、ｆ
・・・裏当材の溝深さ。
特許出願人 新日本製鉄株式会社
ヤ／図
ヤ）因
ヤ３凹Figure 1 is a schematic diagram showing how a backing material is installed using the method of the present invention, and a large current arc and a small current arc are continuously generated periodically over time, and the polarization is weaved in synchronization with this. Figure 2 shows Mg0-Ai*o. -5io, a phase diagram showing the cordierite range of the three-component system, Fig. 3 is an open view showing the shape of the test plate used in the example, and Fig. 4 is a phase diagram showing the cordierite range used in the example. FIG. 3 is a side view showing the shape of a ceramic type backing material. l a, 1 b, 3 a, 3 b --- large current arc, 2 a, 2 b ・= small. Current arc, 4a, 4b14C... electrode, 5 a,
5 b - Base material, 6 Backing material, 7 Weld metal, 8 Aluminum foil tape, T High current arc time, t Low current arc time, H ...Weaving width, W...Welding direction, a...Plate thickness, b...
Root gap, θ...Bevel angle, C...Width of backing material, d...Thickness of backing material, e...Groove width of backing material, f
...Groove depth of backing material. Patent applicant: Nippon Steel Corporation
Claims (1)
面に長手方向に連続的な溝を有したコーデイエライト質
のセラミックスタイプの裏当材を設置し、ワイヤを溶接
線と直角方向に周期的に揺動し、開先壁面部で揺動を停
止すると共に大電流を発生させ、その他の部分を小電流
にして溶接することを特徴とするガスシールドアーク溶
接方法。In upward single-sided welding using a solid wire, a cordierite ceramic type backing material with continuous grooves in the longitudinal direction is installed on the back side of the groove, and the wire is periodically inserted in a direction perpendicular to the weld line. A gas-shielded arc welding method characterized by oscillating, stopping the oscillation at the groove wall surface, generating a large current, and welding with a small current at the other parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2673889A JP2646388B2 (en) | 1989-02-07 | 1989-02-07 | Gas shielded arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2673889A JP2646388B2 (en) | 1989-02-07 | 1989-02-07 | Gas shielded arc welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02207971A true JPH02207971A (en) | 1990-08-17 |
| JP2646388B2 JP2646388B2 (en) | 1997-08-27 |
Family
ID=12201645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2673889A Expired - Lifetime JP2646388B2 (en) | 1989-02-07 | 1989-02-07 | Gas shielded arc welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2646388B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195717A (en) * | 1991-08-23 | 1993-08-03 | Westinghouse Electric Corp <We> | Method of welding clearance in structure |
| CN113894392A (en) * | 2021-09-30 | 2022-01-07 | 北京博清科技有限公司 | Welding process method for overhead welding and bottoming |
-
1989
- 1989-02-07 JP JP2673889A patent/JP2646388B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195717A (en) * | 1991-08-23 | 1993-08-03 | Westinghouse Electric Corp <We> | Method of welding clearance in structure |
| CN113894392A (en) * | 2021-09-30 | 2022-01-07 | 北京博清科技有限公司 | Welding process method for overhead welding and bottoming |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2646388B2 (en) | 1997-08-27 |
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