JPH0452176B2 - - Google Patents
Info
- Publication number
- JPH0452176B2 JPH0452176B2 JP24181684A JP24181684A JPH0452176B2 JP H0452176 B2 JPH0452176 B2 JP H0452176B2 JP 24181684 A JP24181684 A JP 24181684A JP 24181684 A JP24181684 A JP 24181684A JP H0452176 B2 JPH0452176 B2 JP H0452176B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- arc
- welding wire
- shielding gas
- wire
- 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
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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1093—Consumable electrode or filler wire preheat circuits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、イナートガスタングステンアーク
（TIG）溶接法の改良に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improved inert gas tungsten arc (TIG) welding process.
従来、TIG溶接法としては、第４図に示す如く
棒状で先端が先細の非消耗のタングステン電極１
を用いて、母材２と前記電極１の間に溶接アーク
３を発生させ母材２を溶融させる方法が知られて
いる。なお、図中の４はノズルを、５はこのノズ
ル４から流されるアルゴンやヘリウム等のシール
ドガスを、６はトランスを夫々示す。前記シール
ドガス５は、溶接アーク３と溶融池を大気から保
護するためのものである。
Conventionally, TIG welding uses a rod-shaped non-consumable tungsten electrode 1 with a tapered tip as shown in Figure 4.
A method is known in which a welding arc 3 is generated between the base material 2 and the electrode 1 to melt the base material 2. In the figure, 4 indicates a nozzle, 5 indicates a shielding gas such as argon or helium flowing from the nozzle 4, and 6 indicates a transformer. The shielding gas 5 is for protecting the welding arc 3 and the molten pool from the atmosphere.
また、従来の他のTIG溶接法としては、第５図
に示す如くタングステン電極７の先端に円状の溝
８を設けて第４図と同様に溶接する方法が知られ
ている。 Further, as another conventional TIG welding method, a method is known in which, as shown in FIG. 5, a circular groove 8 is provided at the tip of a tungsten electrode 7 and welding is performed in the same manner as shown in FIG.
しかしながら、従来のTIG溶接法によれば次に
示す問題点を有する。
However, the conventional TIG welding method has the following problems.
溶接アークはタングステン電極１（又は７）
の先端形状によつて一定に広がるが、その広が
りを制御できず、溶接品質が低下する。 Welding arc is tungsten electrode 1 (or 7)
Although the weld spreads uniformly depending on the shape of the tip, the spread cannot be controlled and the welding quality deteriorates.
従来のTIG溶接法においては、溶接ワイヤの
添加が別方向から溶接アーク３や溶融池へ供給
されるので、溶接方向を変える場合等は溶接ワ
イヤ送給ガイド等の向きを変える必要があり、
溶接作業性、溶接能率の低下を伴う。 In the conventional TIG welding method, welding wire is added to the welding arc 3 and molten pool from different directions, so when changing the welding direction, it is necessary to change the direction of the welding wire feeding guide, etc.
Accompanied by a decline in welding workability and welding efficiency.
本発明は上記事情に鑑みてなされたもので、溶
接作業性、溶接品質及び溶接能率の向上を図つた
イナートガスタングステンアーク溶接法を提供す
ることを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inert gas tungsten arc welding method that improves welding workability, welding quality, and welding efficiency.
本発明は、中空電極の内側から溶接ワイヤとシ
ールドガスを溶接アーク中央へパルス状でかつ交
互に送給するとともに、前記溶接ワイヤを送給途
中で加熱することによつて、前記目的の達成を図
つたことを骨子とする。
The present invention achieves the above object by alternately feeding the welding wire and shielding gas from the inside of the hollow electrode to the center of the welding arc in a pulsed manner and heating the welding wire during feeding. The main points are what was planned.
〔作用〕
本発明によれば、以下の効果を有するものであ
る。[Function] According to the present invention, the following effects are achieved.
溶接ワイヤをシールドガス雰囲気中で送給す
るため、溶接ワイヤの酸化を防止できる。 Since the welding wire is fed in a shielding gas atmosphere, oxidation of the welding wire can be prevented.
溶接ワイヤを溶接アーク中心から供給するた
め、従来の如く送給方向と溶接進行との関係を
気にする必要がなく、自動溶接化における往復
溶接が可能となる。 Since the welding wire is fed from the center of the welding arc, there is no need to worry about the relationship between the feeding direction and the welding progress as in the past, and reciprocating welding in automatic welding becomes possible.
溶接アークと溶接ワイヤが同心であるため、
溶接ワイヤの狙い位置が変わらず、良好な溶接
ができる。 Because the welding arc and welding wire are concentric,
Good welding is possible without changing the target position of the welding wire.
以下、本発明の一実施例を第１図〜第３図を参
照して説明する。
Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3.
図中の１１は、シールドノズル１２に設けられ
たタングステン製の中空電極である。ここで、こ
の中空電極１１の代わりに同パイプの先端にタン
グステン製の中空電極を取付けたものを用いても
よい。この中空電極１１の内側には、溶接ワイヤ
１３がセラミツクやFRP等の耐熱材１４を介し
て設けられている。前記溶接ワイヤ１３には、給
電部１５が設けられている。この給電部１５は、
溶接ワイヤ１３を溶接トーチへ送給するまでの経
路で通電しI2Rのジユール熱で溶接ワイヤ１３を
加熱するためのものである。前記給電部１５に
は、電源１６が接続されている。前記耐熱材１４
には、間欠ポンプ１７を介在した配管１８が接続
されている。ここで、配管１８は前記中空電極１
１の内側に第１のシールドガスを供給するための
ものであり、間欠ポンプ１７によつて中空電極１
１の内側から溶接アーク１９方向に吹付けるシー
ルドガスはパルス状に送給される。なお、大気の
吸込みを防ぐため溶接ワイヤ１３の加熱部並びに
図示しないが溶接ワイヤのコイルやその送給モー
タ等全体をシールしている。また、図中の２０は
ボンベから送給された溶接アークと溶融池制御用
の第１のシールドガスを、２１はシールドガス供
給口を、２２を溶接アーク１９、母材２３表面の
溶融金属２４並びに溶接金属の酸化を防ぐための
第２のシールドガスを、２５は溶接電源を夫々示
す。 11 in the figure is a tungsten hollow electrode provided in the shield nozzle 12. Here, instead of the hollow electrode 11, a hollow electrode made of tungsten attached to the tip of the same pipe may be used. A welding wire 13 is provided inside the hollow electrode 11 via a heat-resistant material 14 such as ceramic or FRP. The welding wire 13 is provided with a power feeding section 15 . This power supply section 15 is
This is to energize the welding wire 13 in the path until it is fed to the welding torch and heat the welding wire 13 with I 2 R Joule heat. A power supply 16 is connected to the power supply section 15 . The heat resistant material 14
A pipe 18 with an intermittent pump 17 interposed therebetween is connected to the pipe 18 . Here, the pipe 18 is the hollow electrode 1
The purpose is to supply the first shielding gas to the inside of the hollow electrode 1 by an intermittent pump 17.
The shielding gas blown from inside the welding arc 19 in the direction of the welding arc 19 is fed in a pulsed manner. In order to prevent atmospheric air from being sucked in, the heating portion of the welding wire 13 and the entire welding wire coil, its feeding motor, etc. (not shown) are sealed. In addition, 20 in the figure indicates the welding arc sent from the cylinder and the first shielding gas for controlling the molten pool, 21 indicates the shielding gas supply port, 22 indicates the welding arc 19, and the molten metal 24 on the surface of the base material 23. Further, 25 indicates a second shielding gas for preventing oxidation of the weld metal, and 25 indicates a welding power source.
次に本溶接法の作用を説明する。 Next, the effect of this welding method will be explained.
(ア) 第１のシールドガス２０の供給有り、溶接ワ
イヤ１３の供給無しの場合；
即ち、第２図に示す如く、中空電極１１の内
側から溶接アーク１９と溶融池制御用の第１の
シールドガス２０を送給するとともに、溶接ワ
イヤ１３の送給を止めると、溶接アーク１８は
第１のシールドガス２０によつて広がる。ま
た、溶融池は中央部がシールドガス圧によつて
凹み、その分、溶融池は広がる。(a) When the first shield gas 20 is supplied but the welding wire 13 is not supplied; that is, as shown in FIG. 2, the welding arc 19 and the first shield for controlling the molten pool are When the gas 20 is supplied and the supply of the welding wire 13 is stopped, the welding arc 18 is expanded by the first shielding gas 20. Further, the center of the molten pool is depressed by the shielding gas pressure, and the molten pool expands by that amount.
(イ) 第１のシールドガス２０の供給無し、溶接ワ
イヤ１３の供給有りの場合；
この場合、溶接アーク１９は中空電極１１の
直下に集中し、そのアーク中央に溶接ワイヤ１
３が供給され溶滴１３′となつて溶融池へ落下
する（第３図図示）。(a) When the first shielding gas 20 is not supplied and the welding wire 13 is supplied; In this case, the welding arc 19 is concentrated directly under the hollow electrode 11, and the welding wire 1
3 is supplied and falls into the molten pool as a droplet 13' (as shown in FIG. 3).
即ち、本溶接法は前述した第２図、第３図の状
態をパルス状でかつ交互に繰返すもので、第２図
の状態で母材２３の開先側壁を溶融させ、第３図
の状態で溶接アーク１９中心から溶接ワイヤ１３
を供給して開先部を埋める。そして、溶接ワイヤ
１３は送給途中で電気的に加熱したものを溶接ア
ーク１９中に供給すれば、完全に溶融状態となつ
て溶融池に落下するので溶着速度を非常に高める
ことができる。 That is, this welding method alternately repeats the states shown in FIGS. 2 and 3 described above in a pulsed manner, and melts the groove sidewall of the base material 23 in the state shown in FIG. From the welding arc 19 center to the welding wire 13
Fill the groove by supplying. If the welding wire 13 is electrically heated during feeding and is fed into the welding arc 19, it becomes completely molten and falls into the molten pool, so that the welding speed can be greatly increased.
しかして、本発明によれば、タングステン製の
中空電極１１の内側から溶接ワイヤ１３と第１の
シールドガス２０を溶接アーク１９をパルス状で
かつ交互に供給するともに、溶溶ワイヤ１３を送
給途中で電気的に加熱するため、次に示す効果を
有する。 According to the present invention, the welding wire 13 and the first shielding gas 20 are alternately supplied with the welding arc 19 in a pulsed manner from the inside of the tungsten hollow electrode 11, and the molten wire 13 is supplied while being fed. Because it is heated electrically, it has the following effects.
溶接ワイヤ１３を第１のシールドガス１９雰
囲気中で供給するため、溶接ワイヤ１３が酸化
されることを回避でき、溶接品質を向上でき
る。 Since welding wire 13 is supplied in the atmosphere of first shielding gas 19, oxidation of welding wire 13 can be avoided and welding quality can be improved.
溶接ワイヤ１３を溶接アーク中心から供給で
きるため、従来のTIG溶接法のように溶接ワイ
ヤの送給方向と溶接進行方向との関係を気にす
る必要がなく、自動溶接化における往復溶接が
可能となり、溶接作業性、溶接能率を向上でき
る。同様な理由より、本溶接法を熱交換器の管
と管板のシール溶接等に適用すれば、溶接トー
チの支持機構等を簡単にできる。 Since the welding wire 13 can be fed from the center of the welding arc, there is no need to worry about the relationship between the welding wire feeding direction and the welding progress direction as in conventional TIG welding, and reciprocating welding in automatic welding is possible. , welding workability and welding efficiency can be improved. For the same reason, if this welding method is applied to seal welding between tubes and tube sheets of a heat exchanger, etc., the support mechanism of the welding torch can be simplified.
溶接アーク１８と溶接ワイヤ１３が同心であ
るため、溶接ワイヤ１３の狙い位置が変わら
ず、良好な溶接が期待できる。 Since the welding arc 18 and the welding wire 13 are concentric, the target position of the welding wire 13 does not change, and good welding can be expected.
なお、上記実施例では、第１のシールドガスを
パルス状に送給する手段として間欠ポンプを用い
たが、これに限らず、例えばタイマーと電磁バル
ブなどを利用してもよい。 In the above embodiment, an intermittent pump is used as a means for feeding the first shielding gas in a pulsed manner, but the present invention is not limited to this, and a timer and a solenoid valve may be used, for example.
以上詳述した如く本発明によれば、溶接作業
性、溶接品質及び溶接能率を向上しえ、原子力、
原動機、ボイラ等で適用可能な信頼性の高いイナ
ートガスタングステンアーク溶接法を提供でき
る。
As detailed above, according to the present invention, welding workability, welding quality, and welding efficiency can be improved, and nuclear power,
It is possible to provide a highly reliable inert gas tungsten arc welding method that can be applied to prime movers, boilers, etc.
第１図は本発明の一実施例に係るTIG溶接法の
説明図、第２図は同溶接法において第１のシール
ドガスを送給し溶接ワイヤを送給しない場合の説
明図、第３図は同溶接法において第１のシールド
ガスを送給せず溶接ワイヤを送給する場合の説明
図、第４図及び第５図は夫々従来のTIG溶接法の
説明図である。
１１……タングステン製の中空電極、１２……
シールドノズル、１３……溶接ワイヤ、１４……
耐熱材、１５……給電部、１６……電源、１７…
…間欠ポンプ、１８……配管、１９，２１……シ
ールドガス、２２……母材、２３……溶接金属。
FIG. 1 is an explanatory diagram of the TIG welding method according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the same welding method when the first shielding gas is supplied but no welding wire is supplied, and FIG. 3 1 is an explanatory diagram of the welding method in which a welding wire is supplied without supplying the first shielding gas, and FIGS. 4 and 5 are explanatory diagrams of the conventional TIG welding method, respectively. 11... Hollow electrode made of tungsten, 12...
Shield nozzle, 13... Welding wire, 14...
Heat-resistant material, 15... Power supply section, 16... Power supply, 17...
...intermittent pump, 18...piping, 19, 21...shielding gas, 22...base metal, 23...welding metal.
Claims (1)
イヤとシールドガスを溶接アーク中央へパルス状
でかつ交互に送給するとともに、前記溶接ワイヤ
を送給途中で加熱することを特徴とするイナート
ガスタングステンアーク溶接法。1. An inert gas tungsten arc welding method characterized by alternately feeding a welding wire and shielding gas from the inside of a tungsten hollow electrode to the center of the welding arc in a pulsed manner, and heating the welding wire during feeding. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24181684A JPS61119383A (en) | 1984-11-16 | 1984-11-16 | Inert gas tungsten arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24181684A JPS61119383A (en) | 1984-11-16 | 1984-11-16 | Inert gas tungsten arc welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61119383A JPS61119383A (en) | 1986-06-06 |
| JPH0452176B2 true JPH0452176B2 (en) | 1992-08-21 |
Family
ID=17079919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24181684A Granted JPS61119383A (en) | 1984-11-16 | 1984-11-16 | Inert gas tungsten arc welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61119383A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528238B (en) * | 2012-01-18 | 2013-09-04 | 江苏中核利柏特股份有限公司 | Manual tungsten argon arc welding process |
| CN102528237B (en) * | 2012-01-18 | 2013-09-04 | 江苏中核利柏特股份有限公司 | Welding process for carbon steel process pipeline |
| EP2829349B1 (en) * | 2013-07-26 | 2017-12-20 | Linde Aktiengesellschaft | Welding torch and welding device with hollow electrode and potential-free fed welding material, welding method and use of a process gas |
| DE102014003634A1 (en) * | 2014-03-14 | 2015-09-17 | Linde Aktiengesellschaft | Process for tungsten inert gas welding |
| CN104493338A (en) * | 2014-11-27 | 2015-04-08 | 芜湖中集瑞江汽车有限公司 | TIG ((tungsten inert gas) welding process of less than 3mm thick aluminum and aluminum alloys |
| CN106141387A (en) * | 2016-08-24 | 2016-11-23 | 江苏阿斯美特精工科技有限公司 | Coaxial hollow tungsten electrode heating wire TIG welding gun, welder and welding method |
| CN106312270A (en) * | 2016-11-14 | 2017-01-11 | 江苏阿斯美特精工科技有限公司 | Coaxial hollow tungsten electrode TIG device and welding gun thereof, using method and application |
| EP3338935A1 (en) * | 2016-12-22 | 2018-06-27 | MAN Truck & Bus AG | 3d printing apparatus |
| CN107160012A (en) * | 2017-05-11 | 2017-09-15 | 江苏阿斯美特精工科技有限公司 | A kind of TIG welding guns and welding method |
| CN107186322B (en) * | 2017-06-29 | 2022-12-06 | 沈阳工业大学 | Half-split hollow tungsten electrode coaxial wire feeding inert gas shielded welding gun |
| CN107414304A (en) * | 2017-09-11 | 2017-12-01 | 江苏阿斯美特精工科技有限公司 | A kind of compound TIG weldering devices of coaxial laser paraxonic heated filament and its implementation |
| CN115815759B (en) * | 2023-02-06 | 2023-05-16 | 苏州友得利金属制品有限公司 | Hollow tungsten electrode coaxial wire feeding argon arc welding device, welding gun and welding method thereof |
| FR3157246A1 (en) * | 2023-12-22 | 2025-06-27 | Commissariat A L’Energie Atomique Et Aux Energies Alternatives | Shielding gas supply nozzle for welding torch. |
| FR3157247A1 (en) * | 2023-12-22 | 2025-06-27 | Commissariat A L’Energie Atomique Et Aux Energies Alternatives | Arc welding torch with double shielding gas flow. |
-
1984
- 1984-11-16 JP JP24181684A patent/JPS61119383A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61119383A (en) | 1986-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4788409A (en) | Method of and apparatus for automatically conducting all position plasma welding of pipes | |
| JPS61119383A (en) | Inert gas tungsten arc welding method | |
| US3825712A (en) | Welding process | |
| KR20000029905A (en) | Method of welding | |
| JPH1158017A (en) | TIG welding method and apparatus | |
| JP2005515895A (en) | Method and apparatus for increasing welding speed for high aspect ratio welds | |
| US20130105450A1 (en) | Method and apparatus for the production of a welding seam or a three-dimensional structure on a surface of a metallic work piece | |
| EP1136167A1 (en) | Method for guiding arc by laser, and arc guiding welding and device by the method | |
| US1553543A (en) | Arc welding | |
| US4143260A (en) | Multi electrode torch | |
| US3975615A (en) | Vertical position welding method and apparatus for practicing the method | |
| JP2001150137A (en) | Method and apparatus for MIG welding of aluminum and its alloys | |
| JPS60106688A (en) | Laser working device | |
| US2826671A (en) | Method of welding | |
| US4356372A (en) | Sheiled-arc tube welder with intermediate gas supply | |
| JP2000141037A (en) | Welding method for cladding by welding | |
| JP2897063B2 (en) | TIG arc welding torch and welding equipment | |
| JPS6072684A (en) | Tig arc welding torch | |
| JP2677848B2 (en) | Hot wire addition consumable electrode type semi-automatic welding equipment | |
| JPS5927779A (en) | Gas metal arc welding method | |
| JP4113359B2 (en) | Method for treating recesses formed in aluminum welds | |
| JPS58184085A (en) | Laser welding method | |
| JP2000107859A (en) | Horizontal position enclosed welding method of reinforcing bar and gas shielded welding torch used in its welding method | |
| KR840001978Y1 (en) | Gas tungsten arc welding torch | |
| JPS564378A (en) | Inert gas shielded arc welding method |