JPS62263868A - Narrow gap tig welding method - Google Patents
Narrow gap tig welding methodInfo
- Publication number
- JPS62263868A JPS62263868A JP10785086A JP10785086A JPS62263868A JP S62263868 A JPS62263868 A JP S62263868A JP 10785086 A JP10785086 A JP 10785086A JP 10785086 A JP10785086 A JP 10785086A JP S62263868 A JPS62263868 A JP S62263868A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- current
- electrode
- narrow gap
- consumable 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
- 238000003466 welding Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 abstract description 6
- 230000035515 penetration Effects 0.000 abstract description 5
- 230000002250 progressing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野」
本発明は高合金鋼を使用する各種プラントや原子力発電
プラント、深海潜水船等の厚肉鋼板又は鋼管等の溶接に
適用される狭開先Ｔ Ｉ （）溶接方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applied to narrow gap welding of thick steel plates or steel pipes in various plants using high alloy steel, nuclear power plants, deep sea submarines, etc. T I () Regarding welding method.
〔従来の技術Ｊ
従来の狭開先Ｔ Ｉ Ｏ溶接方法では第４図に示すよう
に被溶接材ａ１裏当材すによって囲まれた開先Ｃの内部
に非消耗式ＴＩＧ溶接のノズルｄを配置し、非消耗電極
θよりアークｆを発生させる。ここで、ｇは主直流電源
であり、ｈ。[Prior art J] In the conventional narrow gap TIO welding method, as shown in Fig. 4, a non-consumable TIG welding nozzle d is placed inside the groove C surrounded by the backing material of the workpiece a1. arc f is generated from the non-consumable electrode θ. Here, g is the main DC power supply and h.
土は電流を流すケーブルである。又、開先Ｃを埋めるた
めに使用される溶接ワイヤｊは送給ローラｋによってワ
イヤガイドＬを介して非消耗電極ｅのアークｒによって
形成された溶融池ｍへ送り込まれて溶融する。ここで、
ｎは該ワイヤｊに電流を供給する直流電源であり、ｏ、
ｐは電源ｎから溶接ワイヤｊに電流を送るケーブルであ
る。Earth is a cable that carries current. Further, a welding wire j used to fill the groove C is fed by a feeding roller k via a wire guide L into a molten pool m formed by an arc r of a non-consumable electrode e, and is melted. here,
n is a DC power supply that supplies current to the wire j, o,
p is a cable that sends current from power source n to welding wire j.
従来の狭開先’１：’ Ｉ Ｃ，溶接方法における非消
耗電極ｅと溶接ワイヤｊとの電流極性は同じであるか、
又は反対の極性で使用される。この場合非消耗電極ｅと
溶接ワイヤｊとの極性が同極性の場合、非消耗電極θか
ら発生するアークｆは溶接ワイヤＪの方に引かれ、逆極
性のときには反発する方向に引かれる５、
〔発明が解決しようとする問題点〕
第４図に示す従来の狭開先溶接では開先の両側壁を同じ
ように溶融させ、この部分に溶込み不足による溶接欠陥
の発生を来しやすいことから前項で説明したように非消
耗電極で発生するアークが、溶接ワイヤに流されている
電流によって形成される磁界の影響を受けて開先の側壁
に対して開先のどちらか一方に引かれることとなり、開
先の両側壁を均等に溶融させる点から考えると不具合な
現象である。Is the current polarity of the non-consumable electrode e and the welding wire j the same in the conventional narrow gap '1:' I C, welding method?
or used with opposite polarity. In this case, when the non-consumable electrode e and the welding wire j have the same polarity, the arc f generated from the non-consumable electrode θ is drawn toward the welding wire J, and when the polarity is opposite, it is drawn in the repulsive direction5. [Problems to be solved by the invention] In the conventional narrow gap welding shown in Fig. 4, both sides of the groove are melted in the same way, and welding defects are likely to occur due to insufficient penetration in this area. As explained in the previous section, the arc generated by the non-consumable electrode is drawn to either side of the groove against the side walls of the groove under the influence of the magnetic field formed by the current flowing through the welding wire. This is an inconvenient phenomenon from the point of view of uniformly melting both side walls of the groove.
本発明は上記問題点を解決するために、直流電流を流す
非消耗電極と該電極に対して２本の溶接ワイヤを溶接線
とほぼ直角方向の近傍に非消耗電極を挟んで配設し、該
溶接ワイヤに非消耗電極と同電流極性の電流を流し、し
かもこれを交互に流すようにした溶接方法である。In order to solve the above-mentioned problems, the present invention includes a non-consumable electrode through which a direct current flows, and two welding wires for the electrode, which are arranged near the welding line in a direction substantially perpendicular to the welding line, sandwiching the non-consumable electrode. In this welding method, a current having the same current polarity as that of the non-consumable electrode is passed through the welding wire, and the current is passed alternately.
すなわち、直流電流を使用する非消耗電極と該電極に対
して２本の溶接ワイヤを溶接線とほぼ直角方向の近傍に
非消耗電極を挟んで配設し、該溶接ワイヤに非消耗電極
と同電流極性の電流を流し、かつ同電流を前記溶接ワイ
ヤへ交互に流すことを特徴とする狭開先ＴＩＧ溶接方法
を提供するものである。That is, a non-consumable electrode that uses direct current, and two welding wires for the electrode are placed with the non-consumable electrode in the vicinity of the welding line in a direction approximately perpendicular to the welding line, and the welding wire is connected to the non-consumable electrode. The present invention provides a narrow gap TIG welding method characterized in that a current having a polarity is passed and the same current is passed alternately to the welding wire.
〔作用」
本発明の狭開先Ｔ１Ｇ溶接方法は上記のような溶接方法
となるので、非消耗電極と溶接ワイヤを配設し、上記ど
おり直流電流が流れるとこれにより磁界が発生し、同極
性の電流であるためアークは溶接ワイヤの方向に引かれ
ることになる。ここでは２本の溶接ワイヤに交互に電流
を流すだめ非消耗電極のアークは開先内で溶接進行方向
と直角方向に振れて開先の溶込みが改善できる。[Function] Since the narrow gap T1G welding method of the present invention is a welding method as described above, when a non-consumable electrode and a welding wire are provided and a DC current flows as described above, a magnetic field is generated by this, and the same polarity is generated. Since the current is , the arc is drawn in the direction of the welding wire. In this case, current is applied alternately to the two welding wires, and the arc of the non-consumable electrode swings within the groove in a direction perpendicular to the direction of welding progress, thereby improving the penetration of the groove.
以下、本発明を図面に示す実施例に基づいて具体的に説
明する。第１図は本発明の一実施例に係る狭開先ＴＩＧ
溶接方法に適用される装置構成図。第２，３図は本実施
例に係る狭開先ＴＩＧ溶接方法を適用した溶接状況の説
明図である。Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings. FIG. 1 shows a narrow gap TIG according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of an apparatus applied to the welding method. 2 and 3 are explanatory diagrams of welding conditions to which the narrow gap TIG welding method according to the present embodiment is applied.
以下にその説明をする。The explanation is below.
被溶接材１，１′、裏当材２によって形成された開先３
の内部に非消耗電極４を有するＴ Ｉ Ｇ溶接ノズル５
を配設し、非消耗型４ｉｋ４と溶接線方向に対して直角
方向の近傍に非消耗電極４を挟んで溶接ワイヤ６．６′
を配設する。７，７′は溶接ワイヤの送給ローラであり
、８，８′は溶接ワイヤのガイドノズルである。９は非
゛消耗電極４に溶接電流を送る電源であり、１０ 、１
１は電流送給用のケーブルである。Groove 3 formed by welded materials 1, 1' and backing material 2
T I G welding nozzle 5 with a non-consumable electrode 4 inside
The welding wire 6.6' is placed in the vicinity of the non-consumable type 4ik4 and the non-consumable electrode 4 in the direction perpendicular to the welding line direction.
Place. 7 and 7' are welding wire feeding rollers, and 8 and 8' are welding wire guide nozzles. 9 is a power source that sends welding current to the non-consumable electrode 4;
1 is a cable for supplying current.
溶接ワイヤ６．６′は電流送給用ケーブル１２゜１３に
よって溶接電源１４に接続されている。１５゜１５′は
トランジスタ、又はサイリスタによって構成されたスイ
ッチング装置であり、非消耗電極４の電流極性と同じ極
性の電流を溶接ワイヤ６゜６′に交互に通電するように
なっている。ここで、非消耗電極４に通電するとアーク
１６が発生し、溶融池１７を形成する。この状態で溶接
ワイヤ６゜６′に交互に通電し、通電に同期して該溶接
ワイヤ６．６′を溶融池１７の中に送り込んで溶融させ
る。The welding wire 6.6' is connected to the welding power source 14 by a current supply cable 12.13. Reference numerals 15 and 15' designate a switching device constituted by a transistor or a thyristor, which alternately supplies current of the same polarity as the current polarity of the non-consumable electrode 4 to the welding wires 6 and 6'. Here, when the non-consumable electrode 4 is energized, an arc 16 is generated and a molten pool 17 is formed. In this state, the welding wires 6.6' are alternately energized, and in synchronization with the energization, the welding wires 6.6' are fed into the molten pool 17 and melted.
本発明に係る一実施例の第２，３図においては非消耗電
極４に流れている電流と溶接ワイヤ６．６′に流れてい
る電流の極性が同じであるため、非消耗電極４から発生
しているアーク１６は第２図で溶接ワイヤの電流が第１
図における信号１８の指令により溶接ワイヤ６側に通電
している場合では、通電されているワイヤ６側に引かれ
、第３図に示すように溶接ワイヤの電流が第１図におけ
る信号１８′ の指令により溶接ワイヤ６′側に流れて
いる場合は同じように通電されて電極側にす１かれる。In FIGS. 2 and 3 of one embodiment of the present invention, the current flowing through the non-consumable electrode 4 and the current flowing through the welding wire 6.6' have the same polarity, so the current flowing from the non-consumable electrode 4 is generated. The arc 16 shown in Fig. 2 shows that the welding wire current is the first
When the welding wire 6 side is energized by the command of the signal 18 in the figure, the current is drawn to the energized wire 6 side, and the current in the welding wire is changed to the signal 18' in FIG. If the flow is directed to the welding wire 6' side, it is energized in the same way and flows to the electrode side.
ここで１．１′は仮溶接材、３は開先であってここには
非消耗電極４と、これから発生したアーク１６と溶融池
１７があり、１９は溶接金属である。Here, 1.1' is a temporary welding material, 3 is a groove in which a non-consumable electrode 4, an arc 16 and a molten pool 17 generated from this are located, and 19 is a weld metal.
以上、具体的に説明したように本発明においては、非消
耗電極と同電流極性の電流であるため非消耗電極のアー
クは溶接ワイヤの方向に引かれ、アークは溶接の進行方
向と直角方向に交互に振れて開先の溶込みが改善される
ことにより優れた品質の得られる溶接が可能になる。As specifically explained above, in the present invention, since the current has the same current polarity as that of the non-consumable electrode, the arc of the non-consumable electrode is drawn in the direction of the welding wire, and the arc is perpendicular to the welding direction. By alternating the welds and improving the penetration of the groove, it is possible to achieve welding with excellent quality.
第１図は本発明の一実施例に係る狭開先ＴＩＧ溶接方法
に適用される装置の構成図、第２図及び第３図は本実施
例に係る狭開先Ｔ工ｔ）溶接方法を適用した溶接状況の
説明図、第４図は従来の狭開先Ｔ Ｉ Ｏ溶接方法に適
用される装置構成図である。
■、１・・・・被溶接材、３・・・開先、４・・・非消
耗電極、５・・・Ｔ Ｉ Ｇ溶接ノズル、６．６’・・
・溶接ワイヤ、９・・・電源、１４・・・溶接電源、１
５．１５’・・・スイッチング装置、１６・・・アーク
、１７・・・溶融池、１８．１８’・・・信号、１９・
・・溶接金楓。Fig. 1 is a block diagram of a device applied to a narrow gap TIG welding method according to an embodiment of the present invention, and Figs. 2 and 3 show a narrow gap TIG welding method according to this embodiment. FIG. 4, which is an explanatory diagram of the applied welding situation, is a configuration diagram of an apparatus applied to the conventional narrow gap TIO welding method. ■, 1... Material to be welded, 3... Groove, 4... Non-consumable electrode, 5... T I G welding nozzle, 6.6'...
・Welding wire, 9...Power source, 14...Welding power source, 1
5.15'... Switching device, 16... Arc, 17... Molten pool, 18.18'... Signal, 19.
...Welded gold maple.
Claims (1)
溶接ワイヤを溶接線とほぼ直角方向の近傍に非消耗電極
を挟んで配設し、該溶接ワイヤに非消耗電極と同電流極
性の電流を流し、かつ同電流を前記溶接ワイヤへ交互に
流すことを特徴とする狭開先ＴＩＧ溶接方法。A non-consumable electrode that uses direct current and two welding wires for the electrode are arranged with the non-consumable electrode in the vicinity of the welding line in a direction approximately perpendicular to the welding line, and the welding wire is connected to the same current polarity as the non-consumable electrode. A narrow gap TIG welding method characterized in that a current of 1 is applied to the welding wire, and the same current is applied to the welding wire alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785086A JPS62263868A (en) | 1986-05-12 | 1986-05-12 | Narrow gap tig welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785086A JPS62263868A (en) | 1986-05-12 | 1986-05-12 | Narrow gap tig welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62263868A true JPS62263868A (en) | 1987-11-16 |
Family
ID=14469642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10785086A Pending JPS62263868A (en) | 1986-05-12 | 1986-05-12 | Narrow gap tig welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62263868A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816001A2 (en) * | 1996-06-20 | 1998-01-07 | General Electric Company | Method and apparatus for joining components with multiple filler materials |
| US6040545A (en) * | 1997-06-10 | 2000-03-21 | Kabushiki Kaisha Toshiba | TIG welding method and welding apparatus |
| CN104227181A (en) * | 2013-06-24 | 2014-12-24 | 北京工业大学 | Double-wire-feeding welding method implemented by main electric arcs driven by auxiliary electric arcs to swing |
| CN111515541A (en) * | 2020-04-26 | 2020-08-11 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60255275A (en) * | 1984-06-01 | 1985-12-16 | Babcock Hitachi Kk | Narrow groove tig welding device |
-
1986
- 1986-05-12 JP JP10785086A patent/JPS62263868A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60255275A (en) * | 1984-06-01 | 1985-12-16 | Babcock Hitachi Kk | Narrow groove tig welding device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816001A2 (en) * | 1996-06-20 | 1998-01-07 | General Electric Company | Method and apparatus for joining components with multiple filler materials |
| US5714735A (en) * | 1996-06-20 | 1998-02-03 | General Electric Company | Method and apparatus for joining components with multiple filler materials |
| US5994659A (en) * | 1996-06-20 | 1999-11-30 | General Electric Company | Method and apparatus for welding with preheated filler material |
| EP0816001A3 (en) * | 1996-06-20 | 2001-03-28 | General Electric Company | Method and apparatus for joining components with multiple filler materials |
| US6040545A (en) * | 1997-06-10 | 2000-03-21 | Kabushiki Kaisha Toshiba | TIG welding method and welding apparatus |
| CN104227181A (en) * | 2013-06-24 | 2014-12-24 | 北京工业大学 | Double-wire-feeding welding method implemented by main electric arcs driven by auxiliary electric arcs to swing |
| CN104227181B (en) * | 2013-06-24 | 2017-08-25 | 北京工业大学 | The welding method that double wire feed assistant electric arc driving main arcs are swung |
| CN111515541A (en) * | 2020-04-26 | 2020-08-11 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
| CN111515541B (en) * | 2020-04-26 | 2022-06-10 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
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