JPH07227673A - High-efficiency tig welding method - Google Patents
High-efficiency tig welding methodInfo
- Publication number
- JPH07227673A JPH07227673A JP4176294A JP4176294A JPH07227673A JP H07227673 A JPH07227673 A JP H07227673A JP 4176294 A JP4176294 A JP 4176294A JP 4176294 A JP4176294 A JP 4176294A JP H07227673 A JPH07227673 A JP H07227673A
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- Prior art keywords
- gas
- welding
- primary
- shield
- nozzle
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種金属材料の構造物
における高能率ＴＩＧ溶接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 high efficiency TIG welding method for structures of various metal materials.
【０００２】[0002]
【従来の技術】これまでのＴＩＧ溶接法において溶接能
率を上げるための方法は、（１）特開昭５１−１２８６
５１号公報に示されるようにシールドガスにＨｅガス、
Ｈｅ、Ａｒ混合ガスを用いる。（２）例えば、中村吉
宗，実務展望，Ｎｏ．８２，１９８１，ｐ．２０に示さ
れるように添加ワイヤに通電してワイヤ溶融量を増加さ
せる。（３）特開昭５９−１１８２７４号公報等に示す
２重シールド法を用いてアークを絞り高温化させるなど
の方法が行われてきた。2. Description of the Related Art A conventional method for increasing the welding efficiency in the TIG welding method is described in (1) JP-A-51-1286.
As disclosed in Japanese Patent Publication No. 51, the shield gas is He gas,
A mixed gas of He and Ar is used. (2) For example, Yoshimune Nakamura, Business Outlook, No. 82, 1981, p. The addition wire is energized to increase the amount of wire melting as shown at 20. (3) A method of narrowing the arc to raise the temperature using the double shield method disclosed in JP-A-59-118274 has been used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記
（１）のＨｅガスを用いる方法では溶接金属に対するシ
ールド性が悪くなる。またＨｅ、Ａｒ混合ガスを用いる
方法は、例えば図２のＡｒ、Ｈｅ混合ガス中のＨｅ量の
アーク電圧に及ぼす影響を示すグラフ（ＨｅａｔＴｒａ
ｎｓｐｏｒｔ ｄｕｒｉｎｇ Ｇａｓ Ｔｕｎｇｓｔｅ
ｎ Ａｒｃ Ｗｅｌｄｉｎｇ，Ｊ．Ｐ．Ｚｉｊｐ，１９
９０，学位論文から引用）からわかるように、純Ｈｅガ
スにＡｒガスが２５％混ざるだけでほとんど純Ａｒガス
のアーク電圧になってしまうため、これ以上のＡｒ混合
率ではＨｅガスの効果が発揮されない。一方逆にこれ以
上のＡｒ混合率ではＨｅ濃度が高すぎるためシールド性
が悪くなる。また前記（２）の添加ワイヤに通電して溶
接能率を上げる方法は、溶接アークが不安定になり制御
が難しくなる。また前記（３）の２重シールド法では飛
躍的な溶接効率の増加が望めない。また、実開先に合わ
せて１次ノズルと母材間の距離を長くすると１次、２次
シールドガスが混合してしまい、アークを高温化できな
いという問題がある。However, in the method (1) using the He gas, the shield property against the weld metal deteriorates. The method using the He / Ar mixed gas is, for example, a graph (HeatTra) showing the influence of the He amount in the Ar / He mixed gas on the arc voltage in FIG.
nspurt burning Gas Tungste
n Arc Welding, J.M. P. Zijp, 19
90, quoted from a dissertation), the arc voltage of almost pure Ar gas is almost reached when only 25% of Ar gas is mixed with pure He gas. Not done. On the other hand, on the contrary, if the Ar mixing ratio is higher than this, the He concentration is too high, and the shielding property is deteriorated. In the method (2) of energizing the additive wire to increase the welding efficiency, the welding arc becomes unstable and control becomes difficult. Further, in the double shield method of (3) above, a dramatic increase in welding efficiency cannot be expected. Further, if the distance between the primary nozzle and the base material is increased according to the actual groove, the primary and secondary shield gases are mixed, and there is a problem that the arc cannot be heated to a high temperature.
【０００４】そこで本発明は、開先形状によらず溶融金
属に対するシールド性を従来のＡｒシールド程度に保っ
たまま、溶接アークの電位傾度を高くして高能率ＴＩＧ
溶接を行うことを目的としてなされたものである。Therefore, in the present invention, the potential gradient of the welding arc is increased and the high efficiency TIG is maintained while maintaining the shielding property against the molten metal to the extent of the conventional Ar shield regardless of the groove shape.
It was made for the purpose of welding.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
本発明の高能率ＴＩＧ溶接法は、溶接アークを１次シー
ルドガスであるＨｅで作り、溶融金属に対するシールド
を２次シールドガスであるＡｒで行うことによって、溶
融金属に対するシールド性を保ったまま、純Ｈｅの高い
電位傾度を利用して、高能率ＴＩＧ溶接を実現すること
を特徴とする。また深い開先に対しては１次シールドノ
ズルを２次シールドノズルよりも長くのばすことによっ
てＨｅガスとＡｒガスの混合を防ぐことを特徴とする。In order to achieve the above object, in the high efficiency TIG welding method of the present invention, a welding arc is made of He which is a primary shield gas, and a shield for molten metal is Ar which is a secondary shield gas. By carrying out the method (1), high efficiency TIG welding is realized by utilizing the high potential gradient of pure He while maintaining the shielding property against molten metal. Further, for deep grooves, the primary shield nozzle is made longer than the secondary shield nozzle to prevent mixing of He gas and Ar gas.
【０００６】すなわち本発明の要旨とするところは、タ
ングステン電極を囲む１次シールドガス、および１次シ
ールドガスを囲む２次シールドガスを用いて溶接する２
重シールドＴＩＧ溶接において、１次シールドガスにＨ
ｅガスを流量６〜１０リットル／ｍｉｎ、２次シールド
ガスにＡｒガスを流量１０〜３０リットル／ｍｉｎで使
用し、溶接すること特徴とする高能率ＴＩＧ溶接法、ま
た１次シールドノズルを２次シールドノズルより２０ｍ
ｍ以下の範囲で伸ばすことを特徴とする上記の高能率Ｔ
ＩＧ溶接法、またさらにタングステン電極を１次シール
ドノズルの先端より３〜１０ｍｍ伸ばすことを特徴とす
る上記の高能率ＴＩＧ溶接法にある。That is, the gist of the present invention is that welding is performed using a primary shield gas that surrounds the tungsten electrode and a secondary shield gas that surrounds the primary shield gas.
In heavy shield TIG welding, H is used as the primary shield gas.
A high-efficiency TIG welding method characterized by welding using e gas at a flow rate of 6 to 10 liters / min and secondary shield gas at a flow rate of 10 to 30 liters / min. 20m from the shield nozzle
The above-mentioned high efficiency T characterized by being stretched in a range of m or less
The high-efficiency TIG welding method is characterized in that the tungsten electrode is extended by 3 to 10 mm from the tip of the primary shield nozzle.
【０００７】[0007]
【作用】本発明者等は様々なＴＩＧ溶接実験を繰り返
し、溶接能率を上げるための要因について検討した結
果、Ｈｅシールドによる溶接アーク電位傾度上昇が最も
支配的であるという知見を得た。そこでシールドガスの
効果について注目することにした。先に図２で示したよ
うに、ＨｅガスにＡｒガスを混合させて溶接を行うと、
少ないＡｒ濃度でもほとんどＡｒアークの電圧になって
しまう。そこで１次シールドガスに純Ｈｅ、２次シール
ドガスにＡｒを用いて、溶接アークの電位傾度（アーク
電圧／アーク長）を上げ高能率溶接を行うための多くの
実験を行った。As a result of repeating the various TIG welding experiments and examining the factors for increasing the welding efficiency, the present inventors have found that the increase in the welding arc potential gradient due to the He shield is the most dominant. Therefore, we decided to pay attention to the effect of the shielding gas. As shown in FIG. 2, when He gas is mixed with Ar gas and welding is performed,
Even if the Ar concentration is low, the voltage of the Ar arc is almost reached. Therefore, many experiments were performed to increase the potential gradient (arc voltage / arc length) of the welding arc and perform high-efficiency welding by using pure He as the primary shield gas and Ar as the secondary shield gas.
【０００８】図１は本発明で使用した２重構造のノズル
を示す縦断面図である。溶接トーチはタングステン電極
１、１次シールドノズル２、２次シールドノズル３で構
成されている。図中４は母材開先部、５は溶融池であ
る。深い開先形状を持つ溶接部に対しては、１次シール
ドノズルの突き出し長さｄ1 を伸ばすことによって電極
突き出し長さｄ2 を伸ばさずに溶接することが可能とな
る。FIG. 1 is a longitudinal sectional view showing a double structure nozzle used in the present invention. The welding torch is composed of a tungsten electrode 1, a primary shield nozzle 2 and a secondary shield nozzle 3. In the figure, 4 is a base material groove, and 5 is a molten pool. For a weld having a deep groove shape, it is possible to perform welding without extending the electrode protrusion length d 2 by extending the protrusion length d 1 of the primary shield nozzle.
【０００９】図３は１次シールドガスにＨｅ、２次シー
ルドガスにＡｒを流した場合の１次シールドガスである
Ｈｅの流域をシュリーレン法によって観察した結果を示
すノズル部の縦断面図である。図３（ａ）は電極突き出
し長さが短い状態（ｄ1 ＝０ｍｍ、ｄ2 ＝５ｍｍ）で１
次シールドガスの純Ｈｅだけを流し２次シールドガスを
流さない場合であるが、Ｈｅガスが浮き上がってしまい
母材付近はシールドされていない。しかし２次シールド
ガスの純Ａｒを流すと、同図（ｂ）に示すように１次シ
ールドガスのＨｅが２次シールドガスのＡｒによって閉
じ込められ、母材付近までＨｅによってシールドされて
いることがわかる。また図３（ｃ）に示すように内ノズ
ルを短くしたまま電極突き出しを長くした状態（ｄ1 ＝
０ｍｍ、ｄ2 ＝２０ｍｍ）では１次、２次シールドガス
が混合してしまうが、１次シールドノズルを細長く伸ば
す（ｄ1 ＝１５ｍｍ、ｄ2 ＝５ｍｍ）ことによって同図
（ｄ）に示すように１次、２次シールドガスがうまく分
離され母材付近までＨｅでシールドされるようになる。FIG. 3 is a vertical cross-sectional view of the nozzle portion showing the result of observing the flow region of He, which is the primary shield gas when He is the primary shield gas and Ar is the secondary shield gas, by the Schlieren method. . FIG. 3 (a) shows a case where the electrode protrusion length is short (d 1 = 0 mm, d 2 = 5 mm).
This is a case where only pure He of the secondary shield gas is flowed and the secondary shield gas is not flowed, but the He gas floats up and the vicinity of the base material is not shielded. However, when pure Ar of the secondary shield gas is flowed, He of the primary shield gas is confined by Ar of the secondary shield gas and shielded by He to the vicinity of the base material as shown in FIG. Recognize. Further, as shown in FIG. 3 (c), the state where the electrode protrusion is lengthened while the inner nozzle is shortened (d 1 =
At 0 mm and d 2 = 20 mm), the primary and secondary shield gases are mixed, but by extending the primary shield nozzle elongated (d 1 = 15 mm, d 2 = 5 mm), as shown in FIG. Then, the primary and secondary shield gases are separated well, and He is shielded to the vicinity of the base material.
【００１０】上記のように１次シールドノズルを伸ばす
ことによって１次、２次シールドガスの混合は防げるよ
うになったが、１次シールドノズルを長くしすぎると２
次シールドガスによるシールド効果が減少する。そのた
め、様々な条件でシールド性を確認した結果、１次シー
ルドノズルの突き出し長さは２０ｍｍ以下の範囲が好ま
しいことが判明した。またタングステン電極の突き出し
長さに対しても様々な条件でシュリーレン法によるガス
流域の観察を行い、上限としては１次、２次シールドガ
スの混合がほとんど起こらないｄ2 ＝１０ｍｍまでが、
下限は実用性を考えるとｄ2 ＝３ｍｍまでが好ましいこ
とが判明した。By extending the primary shield nozzle as described above, it has become possible to prevent mixing of the primary and secondary shield gases, but if the primary shield nozzle is made too long, it becomes 2
The shield effect of the next shield gas is reduced. Therefore, as a result of confirming the shield property under various conditions, it was found that the protrusion length of the primary shield nozzle is preferably in the range of 20 mm or less. Also, the gas flow region by the Schlieren method was observed under various conditions with respect to the protruding length of the tungsten electrode, and as the upper limit, up to d 2 = 10 mm at which mixing of the primary and secondary shield gases hardly occurred,
It has been found that the lower limit is preferably up to d 2 = 3 mm in consideration of practicality.
【００１１】図４は、溶接電流を２２０Ａ、溶接電圧を
１６Ｖに設定したまま、１次シールドガス（純Ｈｅ）お
よび２次シールドガス（純Ａｒ）の流量をそれぞれ変化
させた場合のアーク長を示している。参考のため１次シ
ールドガスおよび２次シールドガスともＡｒまたはＨｅ
を用いた場合のアーク長も示している。１次シールドガ
スの流量を増やしていくとアーク長は急激に短くなり１
次シールドガス流量８〜１０リットル／ｍｉｎで飽和
し、１次シールドガス、２次シールドガスともＨｅの場
合のアーク長に近づくことがわかる。このことは１次シ
ールドガスに純Ｈｅを用いると少ないＨｅ流量で溶接ア
ークの電位傾度を高くすることができることを示してい
る。純Ｈｅ流量の範囲は、上限として電位傾度の変化が
飽和する１０リットル／ｍｉｎ、下限としては電位傾度
が飽和値の８０％以上となる６リットル／ｍｉｎが適当
である。FIG. 4 shows the arc lengths when the flow rates of the primary shield gas (pure He) and the secondary shield gas (pure Ar) were changed while the welding current was set to 220 A and the welding voltage was set to 16 V. Shows. For reference, both primary shield gas and secondary shield gas are Ar or He.
The arc length when is used is also shown. When the flow rate of the primary shield gas is increased, the arc length decreases rapidly.
It is found that the secondary shield gas is saturated at a flow rate of 8 to 10 liters / min, and both the primary shield gas and the secondary shield gas approach the arc length in the case of He. This indicates that if pure He is used as the primary shield gas, the potential gradient of the welding arc can be increased with a small He flow rate. The range of the pure He flow rate is suitably 10 liters / min as the upper limit at which the change in the potential gradient is saturated, and 6 liters / min as the lower limit at which the potential gradient is 80% or more of the saturation value.
【００１２】一方、２次シールドガスの流量を変化させ
た場合は、アーク長はほとんど変化しておらず、１次シ
ールドガスの流域と２次シールドガスの流域がうまく分
離されていることがわかる。またこのことから溶接金属
に対するシールド性を良くするため、２次シールドガス
のＡｒ流量を増加したとしても電位傾度には影響無く高
能率溶接が行える。純Ａｒ流量の範囲は、下限としては
溶融金属に対するシールド性を確保するため１０リット
ル／ｍｉｎ以上が適当である。一方、上限については、
高能率ＴＩＧ溶接を行う観点からは上限無しといえる
が、経済性を考えると３０リットル／ｍｉｎが適当であ
る。On the other hand, when the flow rate of the secondary shield gas is changed, the arc length hardly changes, and it can be seen that the flow area of the primary shield gas and the flow area of the secondary shield gas are well separated. . Further, from this fact, in order to improve the shield property against the weld metal, even if the Ar flow rate of the secondary shield gas is increased, the potential gradient is not affected and high efficiency welding can be performed. As the lower limit of the pure Ar flow rate, 10 liters / min or more is appropriate in order to secure the shielding property against molten metal. On the other hand, regarding the upper limit,
It can be said that there is no upper limit from the viewpoint of performing high-efficiency TIG welding, but 30 L / min is appropriate in view of economy.
【００１３】[0013]
【実施例】実施例として水平すみ肉溶接に本発明を適用
した例を示す。母材には９％Ｎｉ鋼、ワイヤにはＦｉｌ
ｌｅｒ １９６を用いた。図５は水平すみ肉溶接時の溶
接トーチの配置図を示している。溶接トーチは下板６に
対して５０°の角度で傾斜させ、１次ノズル突き出し長
さはｄ1 ＝１２ｍｍ、電極突き出し長さはｄ2 ＝７ｍｍ
で配置させた。また１次ガス流量は６リットル／ｍｉ
ｎ、２次ガス流量は２０リットル／ｍｉｎとしトーチの
揺動無しで溶接をした結果、溶接電流４００Ａで溶接速
度４０ｃｍ／ｍｉｎ、ワイヤ溶着量６０ｇ／ｍｉｎの高
能率溶接が達成できた。EXAMPLE An example in which the present invention is applied to horizontal fillet welding will be shown as an example. Base material is 9% Ni steel, wire is Fil
Ler 196 was used. FIG. 5 shows a layout of the welding torch during horizontal fillet welding. The welding torch is inclined at an angle of 50 ° with respect to the lower plate 6, the primary nozzle protrusion length is d 1 = 12 mm, and the electrode protrusion length is d 2 = 7 mm.
Placed in. The primary gas flow rate is 6 liters / mi
n, the secondary gas flow rate was 20 liters / min, and welding was performed without swinging the torch, and as a result, high efficiency welding with a welding current of 400 A, a welding speed of 40 cm / min, and a wire deposition amount of 60 g / min was achieved.
【００１４】また同溶接法で深さ５０ｍｍの狭開先に対
して横向き溶接を行った。開先奥ではｄ1 ＝２０ｍｍ、
ｄ2 ＝５ｍｍのノズル条件で溶接を行い、溶接電流３５
０Ａで４０ｇ／ｍｉｎのワイヤ溶着量が得られた。開先
中層から上層にかけてはｄ1＝１０ｍｍ、ｄ2 ＝６ｍｍ
で溶接を行い、溶接電流４００Ａでトーチをウィービン
グさせることによって平均溶着量５０ｇ／ｍｉｎを達成
した。縦向き溶接に対しては、横向き溶接と同じ開先条
件、ノズル条件で溶接を行ったが溶融金属の溶け落ちが
問題となり溶着速度は３０〜４０ｇ／ｍｉｎ程度であっ
た。In the same welding method, lateral welding was performed on a narrow groove having a depth of 50 mm. D 1 = 20 mm in the back of the groove,
Welding was performed under the nozzle condition of d 2 = 5 mm, and the welding current was 35
A wire deposition amount of 40 g / min was obtained at 0 A. From the middle layer of the groove to the upper layer, d 1 = 10 mm, d 2 = 6 mm
Welding was carried out with a welding current of 400 A, and an average deposition amount of 50 g / min was achieved by weaving the torch. For vertical welding, welding was performed under the same groove and nozzle conditions as those for horizontal welding, but melt-through of molten metal became a problem and the welding speed was about 30 to 40 g / min.
【００１５】この様な高能率ＴＩＧ溶接を行う一方で、
比較のため従来法によるＴＩＧ溶接で水平すみ肉溶接を
行った。シールドノズルには１重ノズルを、シールドガ
スにはＡｒを用いた。溶接電流は４００Ａ程度の大電流
にするとアークの堀り下げ効果のため欠陥が生じてしま
うため３００Ａで行った。トーチ傾け角は５０°とし電
極突き出し長さ１５ｍｍで溶接を行った結果、溶接速度
４０ｃｍ／ｍｉｎではワイヤ溶着量３０ｇ／ｍｉｎしか
達成できなかった。While performing such high efficiency TIG welding,
For comparison, horizontal fillet welding was performed by conventional TIG welding. A single nozzle was used as the shield nozzle and Ar was used as the shield gas. The welding current was set to 300 A because a large current of about 400 A causes defects due to the arc digging effect. As a result of welding with a torch tilt angle of 50 ° and an electrode protrusion length of 15 mm, only a wire deposition amount of 30 g / min could be achieved at a welding speed of 40 cm / min.
【００１６】以上の溶接結果として表１に最大溶着量と
シールド性の評価を示す。本発明の方法を用いることに
より従来の溶接法の２倍以上の能率が得られることがわ
かる。また母材のシールド性については、すべての溶接
法において従来のＡｒシールドと同程度のシールド性を
保っていた。As a result of the above welding, Table 1 shows the evaluation of the maximum amount of welding and the shielding property. It can be seen that the efficiency of the present invention is more than double that of the conventional welding method. Regarding the shielding property of the base material, the same shielding property as the conventional Ar shield was maintained in all welding methods.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】以上説明したように、本発明の高能率Ｔ
ＩＧ溶接法は２重ノズルにおいて、１次シールドガスに
Ｈｅ、２次シールドガスにＡｒを用いることによって、
Ａｒガスの高いシールド性とＨｅガスの高い溶接アーク
電位傾度を有効に利用することができる。このように本
発明は従来のＡｒを用いたＴＩＧ溶接と同程度のシール
ド性を確保したまま高能率溶接を可能にするものであ
る。As described above, the high efficiency T of the present invention is obtained.
The IG welding method uses He as the primary shield gas and Ar as the secondary shield gas in the double nozzle,
The high shielding property of Ar gas and the high welding arc potential gradient of He gas can be effectively utilized. As described above, the present invention enables high-efficiency welding while securing a shield property comparable to that of the conventional TIG welding using Ar.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明で用いた２重構造のノズルを示す縦断面
図FIG. 1 is a vertical cross-sectional view showing a double structure nozzle used in the present invention.
【図２】Ａｒ、Ｈｅ混合ガス中のＨｅ量のアーク電圧に
及ぼす影響を示すグラフFIG. 2 is a graph showing the influence of the amount of He in a mixed gas of Ar and He on the arc voltage.
【図３】２重ノズルにおけるＨｅの流域を示す図で、
（ａ）〜（ｄ）はＡｒ流量、ｄ1、ｄ2 の条件の組み合
わせの変化を示すFIG. 3 is a diagram showing a basin of He in a double nozzle,
(A) to (d) show changes in the combination of Ar flow rate, d 1 and d 2 conditions.
【図４】１次シールドガスの純Ｈｅ流量および２次シー
ルドガスの純Ａｒ流量をそれぞれ変化させた場合のアー
ク長を示すグラフFIG. 4 is a graph showing the arc length when the pure He flow rate of the primary shield gas and the pure Ar flow rate of the secondary shield gas are changed.
【図５】実施例における水平すみ肉溶接時のトーチの配
置図FIG. 5 is a layout view of a torch during horizontal fillet welding in an example
１ タングステン電極 ２ １次シールドノズル ３ ２次シールドノズル ４ 母材開先部 ５ 溶融池 ６ 縦板 ７ 下板 1 Tungsten Electrode 2 Primary Shield Nozzle 3 Secondary Shield Nozzle 4 Base Metal Bevel 5 Molten Pool 6 Vertical Plate 7 Lower Plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 馬場 則光 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norimitsu Baba 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Corporate Technology Development Division
Claims (3)
ス、および１次シールドガスを囲む２次シールドガスを
用いて溶接する２重シールドＴＩＧ溶接において、１次
シールドガスにＨｅガスを流量６〜１０リットル／ｍｉ
ｎ、２次シールドガスにＡｒガスを流量１０〜３０リッ
トル／ｍｉｎで使用し、溶接することを特徴とする高能
率ＴＩＧ溶接法。1. In double shield TIG welding in which a primary shield gas surrounding a tungsten electrode and a secondary shield gas surrounding the primary shield gas are welded, He gas is supplied to the primary shield gas at a flow rate of 6 to 10 liters. / Mi
n A high-efficiency TIG welding method characterized by using Ar gas as a secondary shield gas at a flow rate of 10 to 30 liters / min and performing welding.
ルより２０ｍｍ以下の範囲で伸ばすことを特徴とする請
求項１記載の高能率ＴＩＧ溶接法。2. The high-efficiency TIG welding method according to claim 1, wherein the primary shield nozzle is extended within a range of 20 mm or less from the secondary shield nozzle.
の先端より３〜１０ｍｍ伸ばすことを特徴とする請求項
１または２記載の高能率ＴＩＧ溶接法。3. The high-efficiency TIG welding method according to claim 1, wherein the tungsten electrode is extended from the tip of the primary shield nozzle by 3 to 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4176294A JPH07227673A (en) | 1994-02-17 | 1994-02-17 | High-efficiency tig welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4176294A JPH07227673A (en) | 1994-02-17 | 1994-02-17 | High-efficiency tig welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07227673A true JPH07227673A (en) | 1995-08-29 |
Family
ID=12617422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4176294A Withdrawn JPH07227673A (en) | 1994-02-17 | 1994-02-17 | High-efficiency tig welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07227673A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2764220A1 (en) * | 1997-06-10 | 1998-12-11 | Toshiba Kk | Welding large structures with any torch orientation |
| JP2003053543A (en) * | 2001-08-21 | 2003-02-26 | Babcock Hitachi Kk | Tig welding equipment |
| FR2877597A1 (en) * | 2004-11-09 | 2006-05-12 | Safmatic Sa | DOUBLE FLOW TYPE ARC WELDING TORCH SUITABLE FOR TUBE WELDING |
| WO2013058321A1 (en) * | 2011-10-19 | 2013-04-25 | 大陽日酸株式会社 | Tig welding method for ferrite-based stainless steel plates |
| WO2013157036A1 (en) * | 2012-04-18 | 2013-10-24 | Murata Akihisa | Constricting nozzle and tig welding torch using same |
| CN105121085A (en) * | 2013-04-15 | 2015-12-02 | 丰田自动车株式会社 | Welding torch with upper and lower shielding gas flow and welding method using welding torch for horizontal welding |
-
1994
- 1994-02-17 JP JP4176294A patent/JPH07227673A/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2764220A1 (en) * | 1997-06-10 | 1998-12-11 | Toshiba Kk | Welding large structures with any torch orientation |
| JP2003053543A (en) * | 2001-08-21 | 2003-02-26 | Babcock Hitachi Kk | Tig welding equipment |
| JP4646464B2 (en) * | 2001-08-21 | 2011-03-09 | バブコック日立株式会社 | TIG welding equipment |
| FR2877597A1 (en) * | 2004-11-09 | 2006-05-12 | Safmatic Sa | DOUBLE FLOW TYPE ARC WELDING TORCH SUITABLE FOR TUBE WELDING |
| US9505075B2 (en) | 2011-10-19 | 2016-11-29 | Taiyo Nippon Sanso Corporation | TIG welding method of ferrite stainless steel sheet |
| WO2013058321A1 (en) * | 2011-10-19 | 2013-04-25 | 大陽日酸株式会社 | Tig welding method for ferrite-based stainless steel plates |
| JP2013086136A (en) * | 2011-10-19 | 2013-05-13 | Taiyo Nippon Sanso Corp | Tig welding method for ferritic stainless steel plate |
| CN103889633A (en) * | 2011-10-19 | 2014-06-25 | 大阳日酸株式会社 | Tig welding method for ferrite-based stainless steel plates |
| CN103889633B (en) * | 2011-10-19 | 2017-01-18 | 大阳日酸株式会社 | Tig welding method for ferrite-based stainless steel plates |
| WO2013157036A1 (en) * | 2012-04-18 | 2013-10-24 | Murata Akihisa | Constricting nozzle and tig welding torch using same |
| JP5602974B2 (en) * | 2012-04-18 | 2014-10-08 | 彰久 村田 | Narrowing nozzle and TIG welding torch using the same |
| US9597745B2 (en) | 2012-04-18 | 2017-03-21 | Akihisa Murata | Constricting nozzle and TIG welding torch using this nozzle |
| CN105121085A (en) * | 2013-04-15 | 2015-12-02 | 丰田自动车株式会社 | Welding torch with upper and lower shielding gas flow and welding method using welding torch for horizontal welding |
| CN105121085B (en) * | 2013-04-15 | 2017-09-08 | 丰田自动车株式会社 | Welding gun with upper and lower part protective gas stream and the welding method using the welding gun for being used for level welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010508 |