JPS5881592A - Electrode for tig welding and welding method - Google Patents
Electrode for tig welding and welding methodInfo
- Publication number
- JPS5881592A JPS5881592A JP17768881A JP17768881A JPS5881592A JP S5881592 A JPS5881592 A JP S5881592A JP 17768881 A JP17768881 A JP 17768881A JP 17768881 A JP17768881 A JP 17768881A JP S5881592 A JPS5881592 A JP S5881592A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- welding
- groove
- arc
- cut
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0205—Non-consumable electrodes; C-electrodes
Abstract
Description
【発明の詳細な説明】 極，及びそれを用いての溶接法に係る。[Detailed description of the invention] Concerning electrodes and welding methods using them.
従来のＴＩＧ溶接で狭開先溶接を行なう場合のタングス
テン電極と開先の配置状況を第１図について説明すると
，０１は狭隘な間隙を持つよう配置された被溶接物の開
先，Ｏｌａは上記被溶接物開先０１の開先壁の一方，０
１ｌ＋は上記開先壁０１ａと相対した開先壁，０２は開
先０１のほぼ中央に配されたタングステン電極で，一端
は溶接トーチに把持され図示されない溶接電踪に接続さ
れており，さらにその周辺は図示されないシールドカス
ノスルによりシールドカスの供給を受けている。０２２
１は円錐状に研削された一Ｆ記タンクステン電極０２の
先端，０３は一１一記タングステン電極の先端０２ａよ
り発生したアーク柱である。The arrangement of the tungsten electrode and the groove when performing narrow gap welding with conventional TIG welding is explained with reference to Figure 1. 01 is the groove of the workpiece arranged to have a narrow gap, and Ola is the above-mentioned groove. One side of the groove wall of the workpiece groove 01, 0
1l+ is a groove wall opposite to the groove wall 01a, and 02 is a tungsten electrode placed approximately in the center of the groove 01, one end of which is held by a welding torch and connected to a welding electrode (not shown). The surrounding area is supplied with shield scum by a shield cassette (not shown). 022
1 is the tip of the 1F tungsten electrode 02 ground into a conical shape, and 03 is an arc column generated from the tip 02a of the 111 tungsten electrode.
第１図／に示すように狭隘な開先０１の中で溶接を行な
う場合，円錐状のタングステン電極０２先端部から発生
したアーク０３は主にタングステン電極０２先端直下を
溶融し、開先壁０１ａ、Ｏｌｂを溶融する二とが少ない
ため溶造不良などの溶接欠陥が発生し易くなる。開先壁
０１ａ、Ｏｌｂの溶込を増すため開先中を狭鳴すると、
タンクステン電ｆｉ０２側面からアークが発生し溶接不
能になる。また溶接電流を増大させることによって開先
壁０１ａ、Ｏｌｂの溶込を大きくさせる方法はタングス
テン電極の過熱やアーク直下の溶込が過大になるため好
ましくない。When welding is performed in a narrow groove 01 as shown in Fig. 1, the arc 03 generated from the tip of the conical tungsten electrode 02 mainly melts the area directly below the tip of the tungsten electrode 02, and the groove wall 01a , Since there is less space to melt the Olb, welding defects such as poor welding are likely to occur. When narrowing the groove wall 01a, in order to increase the penetration of Olb,
An arc is generated from the side of the tank stainless steel fi02, making welding impossible. Further, the method of increasing the penetration of the groove walls 01a and Olb by increasing the welding current is not preferable because it causes overheating of the tungsten electrode and excessive penetration directly under the arc.
したがって従来のタングステン電極による溶接は開先壁
の溶造不良の発生が多かった。Therefore, welding using conventional tungsten electrodes often resulted in poor welding of the groove wall.
本発明は、叙−１−の如き従来の欠点に鑑み、Ｔ■０溶
接において溶造不良のない高精度の溶接ができるタング
ステン電極、及び溶接法を提供することを目的とする。SUMMARY OF THE INVENTION In view of the conventional drawbacks as described in Section 1-1, an object of the present invention is to provide a tungsten electrode and a welding method capable of performing high-precision welding without welding defects in T0 welding.
すなわち本発明は、タングステン電極の先端を電極軸に
対して適宜な角度を持って平面状に截断したことを特徴
とするＴＩＯ溶接用電極。That is, the present invention provides a TIO welding electrode characterized in that the tip of the tungsten electrode is cut into a flat shape at an appropriate angle with respect to the electrode axis.
及び先端を電極軸に刻して適宜な角度を１５って平面状
に截断したタングステン電極を被溶接祠の開先内に挿入
し、上ｉピ電極を７１極軸を中心にして回転または旋動
させながらアークを発生させて溶接を行なうことを１４
徴とするＩ’ 丁Ｇ溶接法、さらに上記電極の複数個を
截ｌ１ｉｌｉ面が相、対するように被溶接祠の開先内に
挿入し、各電極にアークを発生させて溶接を行なうこと
を特徴とするＴｒＧ溶接法を提供する。Insert a tungsten electrode whose tip is cut into a flat shape at an appropriate angle of 15 to the electrode axis into the groove of the welding hole, and rotate or rotate the upper i-pi electrode around the 71-pole axis. 14 Welding is performed by generating an arc while moving the
In addition, a plurality of the above-mentioned electrodes are inserted into the groove of the weld to be welded so that the cut surfaces face each other, and an arc is generated in each electrode to perform welding. A characteristic TrG welding method is provided.
したがって本発明によれば、タングステン電極先端を電
極軸に角度を持って’Ｆ而に截断したため、載断面と反
対側にアークの指向ｔ１が生じ２アークが指向した側の
開先壁の溶込みが深くなり、溶造不良などの溶接欠陥が
な（なる。また截断されたタングステン電極を回転また
は旋動させるか、または複数個の載断面を相対させるの
で、アークの指向方向が両側の開先壁に向かい開先壁全
面を溶込ませることが可能である。Therefore, according to the present invention, since the tip of the tungsten electrode is cut at an angle to the electrode axis, an arc direction t1 occurs on the side opposite to the mounting surface, and penetration of the groove wall on the side where the arc is directed occurs. This increases the depth of the arc, eliminating welding defects such as poor welding.In addition, the cut tungsten electrode is rotated or pivoted, or multiple mounting surfaces are placed opposite each other, so that the direction of the arc is aligned with the grooves on both sides. It is possible to penetrate the entire groove wall toward the wall.
本発明の実施例を第２図〜第８図について説明する。Embodiments of the present invention will be described with reference to FIGS. 2 to 8.
まず第２図及び第３図はタングステン電極の側面図及び
正面図であって、２はタングステン電極で、２ａは同電
極２の先端を電極軸に対して角度θを持って平面に截断
した載断面であり。First, Figures 2 and 3 are a side view and a front view of a tungsten electrode, where 2 is a tungsten electrode, and 2a is a mounting plate with the tip of the electrode 2 cut into a plane at an angle θ to the electrode axis. It is a cross section.
裁断角度θは３０〜６０°程度が良好である。The cutting angle θ is preferably about 30 to 60 degrees.
第４図は−１−記タングステン電極の開先中の配置要領
、第５図及び第６図はタングステン電極を回転させる場
合の要領を示すもので、１は狭隘な間隙を持つよう配置
された被溶接物の開先。Figure 4 shows the procedure for arranging the tungsten electrode in the groove as described in -1-, and Figures 5 and 6 show the procedure for rotating the tungsten electrode. Groove of the workpiece.
Ｉａ、Ｉｂは被溶接物開先１の相対するＵｎ先壁。Ia and Ib are the opposing front walls of the groove 1 of the workpiece to be welded.
２は開先１のほぼ中央に配されたタングステン電極、３
はタングステン電極２の先端から発生したアーク柱、４
はタングステン電極２の載断面２ａの裁断角度０の２等
分線である。2 is a tungsten electrode placed approximately in the center of groove 1;
is an arc column generated from the tip of tungsten electrode 2, 4
is a bisector of the cutting angle 0 of the mounting surface 2a of the tungsten electrode 2.
第７図及び第８図は第２図及び第８図のタングステン電
極を２本配置する場合の要領を示すもので、２．２’は
同一形状の２本のタングステン電極であり、それぞれの
載断面２ ａ 、 ２ ａ’は相対するように配置され
開先ｌ内に小形に挿入されている。Figures 7 and 8 show the procedure for arranging two tungsten electrodes as shown in Figures 2 and 8. 2.2' are two tungsten electrodes of the same shape; The sections 2 a and 2 a' are arranged opposite to each other and inserted into the groove l in a compact manner.
次に溶接態様を説明する。Next, the welding mode will be explained.
第４図〜第６図において、開先１のほぼ中央に配された
タングステン電極２に図示されない溶接電源より通電し
、被溶接物で構成される狭隘な間隙の開先１の中でアー
クを発生させて溶接を行なう。二のときタングステン電
極２の周辺は図示されないシールドガスノズルよりシー
ルドカスの供給を受けている。第４図に示す配置でアー
クが発生したとすれば、アークはタングステン電極２の
中心軸方向に発生せず、第４図に示すように電極２と電
極先端の載断面２ａとのなす角θの約２等分線方向に発
生する。したがって第４図では被溶接物の開先１ｔＨＩ
、の側の溶込みは太き（なる。4 to 6, a tungsten electrode 2 placed approximately in the center of a groove 1 is energized from a welding power source (not shown), and an arc is generated within the groove 1 in a narrow gap made up of the workpiece. Welding is performed by generating At the second time, the area around the tungsten electrode 2 is supplied with shielding dregs from a shielding gas nozzle (not shown). If an arc were to occur in the arrangement shown in FIG. 4, the arc would not occur in the direction of the center axis of the tungsten electrode 2, but as shown in FIG. It occurs in the direction of about the bisector of. Therefore, in Fig. 4, the groove of the workpiece is 1tHI.
The penetration on the side of , becomes thicker.
第５図、第６図はタングステン電極２を電極の中心を軸
として１８０°回転させた場合で、第５図はｔａ側、第
６図はｌ ｂ側にアークは指向している。したがって溶
接を行なう場合タングステン電極２を一方向に連続回転
させるか、あるいは電極２を１８０°回転したら反転さ
せることをくり返し開先壁ｔａ及び１１〕の両側を十分
溶造ませる。また電極２の運動は上記回転のほか、開先
形状によってはそれに応じた適宜の旋動を行なうことも
考えられる。5 and 6 show the case where the tungsten electrode 2 is rotated 180 degrees around the center of the electrode, and the arc is directed to the ta side in FIG. 5 and to the lb side in FIG. 6. Therefore, when welding is performed, the tungsten electrode 2 is continuously rotated in one direction, or the electrode 2 is rotated 180 degrees and then reversed repeatedly to sufficiently weld both sides of the groove walls ta and 11]. In addition to the above-mentioned rotation, the movement of the electrode 2 may include appropriate rotation depending on the shape of the groove.
第７図及び第８図においては、タングステン電極２．２
’同志を互に平行にかつ裁断面２ａ。In FIGS. 7 and 8, the tungsten electrode 2.2
'The comrades are parallel to each other and the cut plane 2a.
２′ａが相対するように開先１内に配置し、それぞれ図
示されない電源に接続されている。この場合タングステ
ン電極２，２′は回転させず、電極２は開先壁１ａ側を
、電極２′は開先壁１ｂ側を溶融する。したがってこの
方法によればタングステン電極を回転させることなく、
開先壁の両側を良好に溶融することが可能である。タン
グステン電極２．２’は電流をパルス状に交互に通電す
ることも可能である。2'a are arranged in the groove 1 so as to face each other, and each is connected to a power source (not shown). In this case, the tungsten electrodes 2 and 2' are not rotated, and the electrode 2 melts the groove wall 1a side, and the electrode 2' melts the groove wall 1b side. Therefore, according to this method, without rotating the tungsten electrode,
Good melting on both sides of the groove walls is possible. It is also possible to alternately apply current to the tungsten electrodes 2.2' in a pulsed manner.
具体的実験例を示す。下表に示す従来の円錐状電極と本
発明電極につきアーク発生状況を実験したところ、参考
図写真（１） （２）に示す通りであった。写真（２）
に示す本発明電極は明らかにアークが片側に指向してい
る。A specific experimental example will be shown. When we conducted an experiment on arc generation using the conventional conical electrode shown in the table below and the electrode of the present invention, the results were as shown in reference drawings and photographs (1) and (2). Photo (2)
In the electrode of the present invention shown in Figure 1, the arc is clearly directed to one side.
上述の通り本発明実施例によれば、タングステン電極２
または２′先端を電極軸に角度を持って平面に裁断した
ため、その裁断面２ ａ 、または２８′と反対側１に
アークの指向性が生しアークが指向した側の開先壁の溶
込みか深くなって溶造不良などの溶接欠陥がなくなり、
さらに裁断′ されたタングステン電極２を一１ｊ向に
連続回転させまたは電極を１８０°回転し反転させるか
。As described above, according to the embodiment of the present invention, the tungsten electrode 2
Or, because the tip of 2' is cut into a flat surface at an angle to the electrode axis, arc directionality occurs on the cut surface 2a or side 1 opposite to 28', resulting in penetration of the groove wall on the side where the arc is directed. Welding defects such as poor welding due to deep welding are eliminated.
Further, the cut tungsten electrode 2 is continuously rotated in one direction or the electrode is rotated 180 degrees and reversed.
あるいは複数個のタングステン゛市極２，２′を裁断面
２ａ、２’ａが相対するように配置ｉ’＋°するので。Alternatively, a plurality of tungsten city poles 2, 2' are arranged at i'+° such that the cut surfaces 2a, 2'a face each other.
アークの指向方向が開先（（！の両側に向かい、そこを
充分に溶込ませることができる。The direction of the arc is toward both sides of the groove (!), allowing for sufficient welding there.
第１図は従来のＴＩＧ溶接の要領図、第２図及Ｏ・第３
図は本発明ＴＩＧ溶接の一実施例におけるタングステン
電極の側面図及び正面図、第４図〜第６図はＩ電極を用
いる本発明ＴＩＧ溶接法の概略図で第４図は電極配置要
領図、第５図及び第６図は電極回転態様の要領図、第７
図及び第８図は２電極を用いる本発明ＴＩＧ溶接法の概
略図で第７図は溶接線に沿う要領図、第８図は溶接線に
直交する面の要領図である。
１・・・開先＋ ＋、、ｌｂ・・・開先壁 ２ 、２
／・・・タングステン電＆ ＋ ２ ａ ＋ ２ ａ
’・・電極裁断面、３・・・アーク柱。
第１図
θ２
第２図 第３図
第５図
第７図
第す図
第Ｓ図
ノｆFigure 1 shows the procedure for conventional TIG welding, Figures 2, O, and 3
The figure is a side view and a front view of a tungsten electrode in one embodiment of TIG welding of the present invention, Figures 4 to 6 are schematic diagrams of the TIG welding method of the present invention using an I electrode, and Figure 4 is a diagram of the electrode arrangement procedure. Figures 5 and 6 are schematic diagrams of the electrode rotation mode, Figure 7
8 and 8 are schematic diagrams of the TIG welding method of the present invention using two electrodes, FIG. 7 is a schematic diagram along the welding line, and FIG. 8 is a schematic diagram of the plane perpendicular to the welding line. 1... Groove + +,, lb... Groove wall 2, 2
/...Tungsten electric & + 2 a + 2 a
'...electrode cutting surface, 3...arc column. Figure 1 θ2 Figure 2 Figure 3 Figure 5 Figure 7 Figure S Figure S
Claims (3)
に対して適宜な角度を持って平面状に截断したことを特
徴とするＴ Ｉ Ｇ溶接用電極。(1) An electrode for TIG welding, characterized in that the tip of a tungsten electrode for TMG welding is cut into a flat shape at an appropriate angle with respect to the electrode axis.
面状に截断したタングステン電極を被溶接材の開先内に
挿入し、上記電極を電極軸を中心にして回転または旋動
させながらアークを発生させて溶接を行なうことを特徴
とするＴＩＧ溶接法。(2) Insert a tungsten electrode whose tip has been cut into a flat shape with the tip at an appropriate angle to the electrode axis into the groove of the material to be welded, and while rotating or pivoting the electrode around the electrode axis. TIG welding method is characterized by welding by generating an arc.
面状に截断したタングステン電極の複数個を、上記載断
面が相対するように被溶接材の開先内に挿入し、−１−
記複数個電極にアークを各々発生させて溶接を行なうこ
とを特徴とするＴＩ（］溶接法。(3) Insert a plurality of tungsten electrodes whose tips are cut into planar shapes at an appropriate angle with respect to the electrode axis into the groove of the material to be welded so that the above-mentioned cross sections face each other, and -1-
A TI () welding method characterized in that welding is performed by generating arcs at each of the plurality of electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17768881A JPS5881592A (en) | 1981-11-05 | 1981-11-05 | Electrode for tig welding and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17768881A JPS5881592A (en) | 1981-11-05 | 1981-11-05 | Electrode for tig welding and welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5881592A true JPS5881592A (en) | 1983-05-16 |
Family
ID=16035362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17768881A Pending JPS5881592A (en) | 1981-11-05 | 1981-11-05 | Electrode for tig welding and welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5881592A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159276A (en) * | 1983-03-01 | 1984-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Arc oscillating method in tig welding method |
| JPS6225070U (en) * | 1985-07-29 | 1987-02-16 | ||
| WO1995029487A1 (en) * | 1994-04-22 | 1995-11-02 | General Electric Company | Reactor core shroud repair with welded brackets |
| US5530219A (en) * | 1994-04-22 | 1996-06-25 | General Electric Company | Reactor core shroud repair with welded brackets |
| US5670072A (en) * | 1994-04-22 | 1997-09-23 | General Electric Company | Method and apparatus for joining metal components with mitigation of residual stresses |
| JP2015024425A (en) * | 2013-07-26 | 2015-02-05 | 株式会社Ihi | Groove copying welding apparatus and groove copying welding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834048A (en) * | 1971-09-06 | 1973-05-15 | ||
| JPS52144346A (en) * | 1976-05-28 | 1977-12-01 | Hitachi Ltd | Multiielectrode tig welding |
| JPS5545521A (en) * | 1978-09-26 | 1980-03-31 | Babcock Hitachi Kk | Automatic tig welding method of pipe and pipe plate |
| JPS5668590A (en) * | 1979-11-12 | 1981-06-09 | Toshiba Corp | Tig welding method |
-
1981
- 1981-11-05 JP JP17768881A patent/JPS5881592A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834048A (en) * | 1971-09-06 | 1973-05-15 | ||
| JPS52144346A (en) * | 1976-05-28 | 1977-12-01 | Hitachi Ltd | Multiielectrode tig welding |
| JPS5545521A (en) * | 1978-09-26 | 1980-03-31 | Babcock Hitachi Kk | Automatic tig welding method of pipe and pipe plate |
| JPS5668590A (en) * | 1979-11-12 | 1981-06-09 | Toshiba Corp | Tig welding method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159276A (en) * | 1983-03-01 | 1984-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Arc oscillating method in tig welding method |
| JPS6225070U (en) * | 1985-07-29 | 1987-02-16 | ||
| WO1995029487A1 (en) * | 1994-04-22 | 1995-11-02 | General Electric Company | Reactor core shroud repair with welded brackets |
| US5530219A (en) * | 1994-04-22 | 1996-06-25 | General Electric Company | Reactor core shroud repair with welded brackets |
| US5670072A (en) * | 1994-04-22 | 1997-09-23 | General Electric Company | Method and apparatus for joining metal components with mitigation of residual stresses |
| JP2015024425A (en) * | 2013-07-26 | 2015-02-05 | 株式会社Ihi | Groove copying welding apparatus and groove copying welding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6469277B1 (en) | Method and apparatus for hybrid welding under shielding gas | |
| US4390774A (en) | Method and apparatus for treating electrically non-conductive workpieces | |
| JPH10216972A (en) | Dual welding method of laser beam and consumable electrode arc | |
| JP2007326148A (en) | Double wire welding torch and method pertinent to it | |
| US4292496A (en) | Vertical plate welding using double bevel joint | |
| JPS5881592A (en) | Electrode for tig welding and welding method | |
| JP2004090069A (en) | Laser-and-arc composite welding method, and groove shape of weld joint used therefor | |
| US4267428A (en) | Contoured welding rod | |
| KR20230148826A (en) | Laser welding of metal foil stacks to metal substrates | |
| JPH10272577A (en) | Highly precise welding method for groove | |
| JPH11147175A (en) | Gas shield arc welding method | |
| JPH02187272A (en) | First layer welding method for one-side welding | |
| JPH10244369A (en) | Method and device of combined welding by arc and laser using belt-like electrode | |
| JP2001334377A (en) | Method of butt welding using laser beam and arc | |
| JPH09225663A (en) | Laser welding method | |
| SU889351A1 (en) | Nonconsumable elestrode | |
| JP2000084673A (en) | Tig welding torch for horizontal welding | |
| JP2003053565A (en) | Laser-arc composite welding head, device and nozzle | |
| JPH051108B2 (en) | ||
| JPS60145275A (en) | Root pass method | |
| US3140384A (en) | Starting block for arc welding | |
| JPS60244481A (en) | Arc shield for stud welding | |
| SU707710A1 (en) | Method of electric-arc multipass welding | |
| JPH10193180A (en) | Ceramic end tab for welding | |
| JP2005138151A (en) | Welding method and welding system |