JP2001198677A - Agitation welding method and device - Google Patents
Agitation welding method and deviceInfo
- Publication number
- JP2001198677A JP2001198677A JP2000005349A JP2000005349A JP2001198677A JP 2001198677 A JP2001198677 A JP 2001198677A JP 2000005349 A JP2000005349 A JP 2000005349A JP 2000005349 A JP2000005349 A JP 2000005349A JP 2001198677 A JP2001198677 A JP 2001198677A
- Authority
- JP
- Japan
- Prior art keywords
- molten pool
- welding
- torch
- speaker
- vibration
- 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.)
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- Arc Welding In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＴＩＧ溶接トーチを
用いた攪拌溶接方法及び装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring welding method and apparatus using a TIG welding torch.
【０００２】[0002]
【従来の技術】２つの母材を突き合わせて溶接する際に
用いる従来のＴＩＧ溶接トーチＩは、図３にその一例を
示す如く、中央部に上下方向（軸心方向）に延びる電極
挿通孔２を貫通させて形成してあるトーチ本体１の該電
極挿通孔２の下端部に、下端部にテーパ部３を有するコ
レット保持筒４の上端部をねじ込み方式により取り付
け、該コレット保持筒４内に、下端から軸方向に所要長
さのスリット５を有し且つ下端部外側をコレット保持筒
４のテーパ部３内面と係合するテーパ面としたコレット
６を上方より挿入配置すると共に、上端部を電極挿通孔
２の内径に対応するよう拡径して該電極挿通孔２内に突
出させた状態にし、該コレット６に、タングステン製の
電極７を上下方向に挿通させて保持させ、又、上記トー
チ本体１の電極挿通孔２内に、下端面が上記コレット６
の上端面に当接するような長さとしてあるトーチキャッ
プ８を上方より螺合させて配置して、該トーチキャップ
８をねじ込み方向に回わして締め込むことによりコレッ
ト６を押し下げてその下端部をコレット保持筒４のテー
パ部３内面に押し付けてスリット５部を絞ることにより
電極７を固定させるようにしてあり、更に、上記コレッ
ト保持筒４の下部外周に、外径を大きくした外胴９を一
体に設けて、該外胴９の下端とコレット保持筒４のテー
パ部３の下端との間の開口にガスレンズ１０を取り付
け、且つ上記トーチ本体１の下部に、コレット保持筒４
及び外胴９を取り囲むように、下端部を絞り形状とした
トーチカップ１１を外胴９の外周部へのねじ込みにより
取り付け、トーチ本体１のガス供給路１２に供給したシ
ールドガス１３を、コレット保持筒４内から孔４ａを通
して外胴９内に導き、ガスレンズ１０を通してトーチカ
ップ１１の先端（下端）より放出させつつ、電極７の先
端で発生させたアーク１４の熱により溶接ワイヤ１５を
溶融させて溶融プール１６を形成し、この溶融プール１
６による溶着金属の層を重ねて行くことにより開先の溶
接が行われるようにしてある。2. Description of the Related Art As shown in FIG. 3, a conventional TIG welding torch I used when two base materials are butt-welded is an electrode insertion hole 2 extending vertically (axially) at the center. Is attached to the lower end of the electrode insertion hole 2 of the torch main body 1 formed by penetrating the upper end of a collet holding tube 4 having a tapered portion 3 at the lower end by a screwing method. A collet 6 having a slit 5 of a required length in the axial direction from the lower end and having a tapered surface on the outer side of the lower end engaging with the inner surface of the tapered portion 3 of the collet holding cylinder 4 is inserted from above and disposed at the upper end. The diameter is increased to correspond to the inner diameter of the electrode insertion hole 2 so as to protrude into the electrode insertion hole 2, and a tungsten electrode 7 is inserted and held in the collet 6 in a vertical direction. Electrode insertion of torch body 1 In 2, the lower end surface above the collet 6
A torch cap 8 having a length such that the torch cap 8 is in contact with the upper end surface of the torch is screwed from above, and the torch cap 8 is turned in the screwing direction and tightened to push down the collet 6 to lower the lower end thereof. The electrode 7 is fixed by pressing against the inner surface of the tapered portion 3 of the collet holding tube 4 and narrowing the slit 5 portion. Further, an outer shell 9 having a larger outer diameter is provided on the outer periphery of the lower portion of the collet holding tube 4. The gas lens 10 is attached to the opening between the lower end of the outer body 9 and the lower end of the tapered portion 3 of the collet holding cylinder 4, and the collet holding cylinder 4 is provided below the torch main body 1.
A torch cup 11 having a narrowed lower end is attached to the outer periphery of the outer case 9 by screwing so as to surround the outer case 9, and the shielding gas 13 supplied to the gas supply path 12 of the torch body 1 is held in a collet. The welding wire 15 is melted by the heat of the arc 14 generated at the tip of the electrode 7 while being guided from the inside of the cylinder 4 into the outer barrel 9 through the hole 4a and discharged from the tip (lower end) of the torch cup 11 through the gas lens 10. To form a molten pool 16, and the molten pool 1
The welding of the groove is performed by superimposing the layers of the deposited metal according to No. 6.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記従来の
ＴＩＧ溶接トーチＩを用いた開先溶接の場合、溶融量増
大のために電流量を増大させると、溶接ワイヤ１５の溶
融により形成される溶融プール１６が該溶接ワイヤ１５
の溶融量の増大に伴い広がりにくくなって開先壁部との
馴染みが悪くなる傾向があるので、溶接品質を安定確保
しずらくなる問題がある。However, in the case of the groove welding using the conventional TIG welding torch I, if the amount of current is increased to increase the amount of melting, the melting formed by the melting of the welding wire 15 is prevented. The pool 16 is the welding wire 15
However, there is a problem that it becomes difficult to stably secure welding quality, because it tends to be difficult to spread with the groove wall portion with an increase in the amount of melting of the alloy.
【０００４】因に、従来では、ＴＩＧ溶接トーチＩのト
ーチカップ１１の先端部外周に磁気コイルを取り付け、
磁気コイルにより溶接部付近に磁界をかけて、溶融プー
ルにローレンツカによる攪拌力を与えることで溶融プー
ルに広がりをもたせつつ溶接するようにした磁気攪拌溶
接が知られているが、シールドガス１３を流すために取
り付けた大径のトーチカップ１１の外周に更に大径の磁
気コイルを取り付けることになるため、トーチ周りのコ
ンパクト化に難があると共に、溶接部を目視により確認
しにくくなってしまうという問題がある。Conventionally, a magnetic coil is attached to the outer periphery of the tip of the torch cup 11 of the TIG welding torch I,
Magnetic stir welding is known in which a magnetic field is applied to the vicinity of a welded portion by a magnetic coil to apply a stirring force by Lorentzka to the molten pool so that the molten pool is welded while being spread. Since a larger-diameter magnetic coil is attached to the outer periphery of the larger-diameter torch cup 11 attached for flowing, it is difficult to reduce the size of the periphery of the torch, and it is difficult to visually confirm the welded portion. There's a problem.
【０００５】そこで、本発明は、大電流溶接を行っても
溶接品質を確保することができるようにすると共に、ト
ーチ周りのコンパクト化を図ることができるようにし、
且つ溶接状況を確認しながら溶接作業を進めることがで
きるようにするものである。[0005] Therefore, the present invention is intended to ensure the welding quality even when performing high current welding, and to reduce the size around the torch.
In addition, the welding operation can be performed while checking the welding status.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を解
決するために、突き合わせ溶接を行わせる母材の開先部
に溶接トーチの電極を位置させて、該電極の先端から発
するアークで溶接ワイヤを溶融させることにより開先底
部に形成される溶融プールに対して、該溶融プールの固
有振動数に相当する周波数の音波を送り、溶融プールに
振動を与えて攪拌しながら溶接する攪拌溶接方法及び装
置とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to position an electrode of a welding torch at a groove of a base material for performing butt welding, and to use an arc emitted from the tip of the electrode. Stir welding that sends a sound wave having a frequency corresponding to the natural frequency of the molten pool to the molten pool formed at the groove bottom by melting the welding wire and applies vibration to the molten pool to perform welding while stirring. Method and apparatus.
【０００７】溶融プールの固有振動数に相当する周波数
の音波で溶融プールに振動を与えることにより、溶融プ
ールに広がりをもたせることができるようになって、開
先壁部との馴染みをよくすることができるようになる。[0007] By applying vibration to the molten pool with a sound wave having a frequency corresponding to the natural frequency of the molten pool, the molten pool can be spread, thereby improving familiarity with the groove wall. Will be able to
【０００８】又、溶融プールに対して音波を送ることに
より溶融プールに振動を与えるようにすることに代え
て、母材に直接振動を与えて溶融プールに振動を与える
ようにしても、溶融プールを攪拌して広げることができ
る。Further, instead of vibrating the molten pool by sending a sound wave to the molten pool, vibration may be applied to the molten pool by directly vibrating the base material. Can be spread by stirring.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の実施の一形態を示すもの
で、図３に示したと同様な構成としてあるＴＩＧ溶接ト
ーチＩのトーチ本体１の上端部所要個所に、斜め下方へ
向けて張り出すように支持アーム１８の上端部を取り付
け、且つ該支持アーム１８の下端部に、スピーカ１９と
該スピーカ１９の音波発生源２０を支持させて、該スピ
ーカ１９を、溶接ワイヤ１５の供給方向とは反対側の方
向から電極７の先端部付近へ向くように位置設定し、２
つの母材２１の突き合わせ部の開先２２内に電極７の先
端から発したアーク１４で溶接ワイヤ１５を溶融させる
ことにより形成された溶融プール１６へ向けて、該溶融
プール１６の固有振動数に相当する一定周波数の音波を
送るようにした構成とする。１７は溶接ワイヤ１５を挿
通保持するワイヤホルダ、２３はワイヤホルダ１７の支
持部材を示す。FIG. 1 shows an embodiment of the present invention, in which a TIG welding torch I having a configuration similar to that shown in FIG. The upper end of the support arm 18 is attached as described above, and the lower end of the support arm 18 supports the speaker 19 and the sound source 20 of the speaker 19. The position is set so that it faces the vicinity of the tip of the electrode 7 from the opposite direction.
To the melting pool 16 formed by melting the welding wire 15 with the arc 14 emitted from the tip of the electrode 7 in the groove 22 of the butted portion of the two base materials 21, the natural frequency of the melting pool 16 is increased. It is configured to transmit a sound wave of a corresponding constant frequency. Reference numeral 17 denotes a wire holder for inserting and holding the welding wire 15, and 23 denotes a support member for the wire holder 17.
【００１１】２つの母材２１の突き合わせ部を溶接する
場合は、開先２２部に電極７の先端を位置させて、先端
から発生させるアーク１４で溶接ワイヤ１５を溶融させ
ることにより溶融プール１６を形成させ、この溶融プー
ル１６による溶着金属層を重ねていくようにするが、こ
の際、上記溶融プール１６に対して、該溶融プール１６
の固有振動数に相当する一定周波数の音波をスピーカ１
９から送るようにする。When welding the butted portion of the two base materials 21, the tip of the electrode 7 is located at the groove 22 and the welding wire 15 is melted by the arc 14 generated from the tip to form the molten pool 16. The molten metal layer formed by the molten pool 16 is superposed on the molten pool 16.
A sound wave of a constant frequency corresponding to the natural frequency of the speaker 1
Send from 9
【００１２】上記において、電極７から発しているアー
ク１４下部の溶融プール１６は液状であり且つ一定の体
積を有しているため、ほぼ一定の固有振動数ｆ１をもつ
ことになる。したがって、この溶融プール１６の固有振
動数ｆ１に相当する一定周波数の音波を条件出しで特定
して音波発生源２０に設定しておいて、その音波をスピ
ーカ１９から溶融プール１６に対して送ると、溶融プー
ル１６に振動を与えることができて、溶融プール１６を
攪拌することができるようになる。これにより、溶融量
を増大させるために電流量を増大させた際も溶融プール
１６を安定して広げることができて開先２２の壁部との
馴染みをよくすることができ、その結果、安定した溶接
を行うことができて溶接品質を確保することができる。In the above, the arc 14 the lower portion of the molten pool 16 emanating from the electrode 7 because it has and constant volume is liquid, so that substantially has a constant natural frequency f 1. Therefore, a sound wave having a constant frequency corresponding to the natural frequency f 1 of the molten pool 16 is specified under conditions and set in the sound source 20, and the sound wave is sent from the speaker 19 to the molten pool 16. Then, vibration can be applied to the molten pool 16 and the molten pool 16 can be stirred. Thereby, even when the amount of current is increased in order to increase the amount of melting, the melting pool 16 can be stably expanded, and the familiarity with the wall of the groove 22 can be improved. Welding can be performed and welding quality can be ensured.
【００１３】このように、本発明では、スピーカ１９か
ら溶融プール１６へ向けて音波を送ることによって、溶
融プール１６を攪拌させながら溶接を行わせるようにす
るので、トーチカップ１１の先端部に大径の磁気コイル
を取り付ける場合に比してＴＩＧ溶接トーチＩ周りをコ
ンパクト化でき、且つ母材２１の厚みが厚くても、又、
狭開先であっても適用でき、又、磁気コイルを取り付け
た場合に比して溶接状況を目視により監視しながら溶接
作業を行うことができることから、溶接品質の管理の上
でも有利となる。As described above, in the present invention, the sound wave is sent from the speaker 19 to the molten pool 16 so that the welding is performed while stirring the molten pool 16. In comparison with the case of attaching a magnetic coil having a diameter, the area around the TIG welding torch I can be made compact, and even if the base material 21 is thick,
The present invention can be applied to a narrow groove, and the welding operation can be performed while visually monitoring the welding condition as compared with the case where a magnetic coil is attached. This is advantageous in controlling the welding quality.
【００１４】次に、図２は本発明の実施の他の形態を示
すもので、図１に示した実施の形態において、トーチ本
体１に取り付けた支持アーム１８にスピーカ１９を支持
させて、該スピーカ１９から溶融プール１６に対して音
波を送って溶融プール１６に振動を与えるようにするこ
とに代えて、開先２２を形成する一方の母材２１上に振
動発生装置２４を搭載させ、開先溶接時に、溶融プール
１６の固有振動数に相当する一定周波数の振動を振動発
生装置２４により母材２１に直接与えることによって、
溶融プール１６に振動を与えるようにしたものである。FIG. 2 shows another embodiment of the present invention. In the embodiment shown in FIG. 1, a speaker 19 is supported by a support arm 18 attached to the torch body 1, and Instead of sending a sound wave from the speaker 19 to the molten pool 16 to apply vibration to the molten pool 16, a vibration generating device 24 is mounted on one base material 21 forming a groove 22 and opened. At the time of pre-welding, by applying a vibration of a constant frequency corresponding to the natural frequency of the molten pool 16 directly to the base material 21 by the vibration generator 24,
Vibration is applied to the molten pool 16.
【００１５】図２に示すように、振動発生装置２４によ
り母材２１に直接振動を与えても、溶融プール１６に振
動を与えることができて溶融プール１６に広がりをもた
せることができるので、開先２２の壁部での欠陥を起す
ことがなく、安定状態で攪拌溶接を行うことができる。As shown in FIG. 2, even if the base material 21 is directly vibrated by the vibration generating device 24, the molten pool 16 can be vibrated and the molten pool 16 can be expanded. Stir welding can be performed in a stable state without causing a defect in the wall of the tip 22.
【００１６】なお、図１の実施の形態では、スピーカ１
９を支持する支持アーム１８をトーチ本体１の上端部に
取り付けるようにした場合を示したが、これに限られる
ものではないこと、又、実施の形態では後進溶接を行っ
ている場合を示しているが、前進溶接であってもよいこ
と、その他本発明の要旨を逸脱しない範囲内において種
々変更を加え得ることは勿論である。In the embodiment shown in FIG. 1, the speaker 1
Although the case where the support arm 18 supporting the support 9 is attached to the upper end portion of the torch main body 1 is shown, the present invention is not limited to this, and the embodiment shows the case where backward welding is performed. However, it is a matter of course that various changes can be made without departing from the gist of the present invention, which may be forward welding.
【００１７】[0017]
【発明の効果】以上述べた如く、本発明の攪拌溶接方法
及び装置によれば、突き合わせ溶接を行わせる母材の開
先部に溶接トーチの電極を位置させて、該電極の先端か
ら発するアークで溶接ワイヤを溶融させることにより開
先底部に形成される溶融プールに対して、該溶融プール
の固有振動数に相当する周波数の音波を送り、溶融プー
ルに振動を与えて攪拌しながら溶接するようにしたり、
あるいは、溶融プールに対して音波を送ることにより溶
融プールに振動を与えるようにすることに代えて、母材
に直接振動を与えて溶融プールに振動を与えるようにす
る攪拌溶接方法及び装置としてあるので、溶着量増大の
ために電流量を増大させても、溶融プールを攪拌して広
げることができるために、開先壁部との馴染みをよくす
ることができて溶接品質を確保することができると共に
溶接品質の安定化を図ることができ、母材の厚みが厚く
ても狭開先であっても適用でき、又、従来の磁気攪拌溶
接の如くＴＩＧ溶接トーチのトーチカップ外周に磁気コ
イルを取り付けることがないことから、トーチ周りのコ
ンパクト化を図ることができるとともに、溶接部を監視
しながら溶接作業を進めることができる、等の優れた効
果を発揮する。As described above, according to the stirring welding method and apparatus of the present invention, the electrode of the welding torch is positioned at the groove of the base material for performing butt welding, and the arc generated from the tip of the electrode is formed. A sound wave having a frequency corresponding to the natural frequency of the molten pool is sent to a molten pool formed at the bottom of the groove by melting the welding wire with, so that the molten pool is vibrated and welded while stirring. Or
Alternatively, there is provided a stir welding method and apparatus in which vibration is applied to a molten metal by directly applying vibration to a base material instead of applying vibration to the molten pool by sending a sound wave to the molten pool. Therefore, even if the amount of current is increased to increase the amount of welding, the molten pool can be agitated and spread, so that it can be well-fitted to the groove wall and the welding quality can be secured. It is possible to stabilize the welding quality as well as to apply it even if the thickness of the base material is thick or narrow. Also, as with the conventional magnetic stir welding, a magnetic coil is provided around the torch cup of the TIG welding torch. Since there is no need to attach a torch, it is possible to reduce the size of the periphery of the torch, and to exhibit excellent effects such as being able to proceed with welding work while monitoring a welded portion.
【図１】本発明の攪拌溶接装置の実施の一形態を示す概
略図である。FIG. 1 is a schematic view showing an embodiment of a stir welding apparatus according to the present invention.
【図２】本発明の実施の他の形態を示す概略図である。FIG. 2 is a schematic view showing another embodiment of the present invention.
【図３】ＴＩＧ溶接トーチの一例を示す切断側面図であ
る。FIG. 3 is a cut-away side view showing an example of a TIG welding torch.
Ｉ ＴＩＧ溶接トーチ ７ 電極 １４ アーク １５ 溶接ワイヤ １６ 溶融プール １８ 支持アーム １９ スピーカ ２０ 音波発生源 ２１ 母材 ２２ 開先 ２４ 振動発生装置 I TIG welding torch 7 Electrode 14 Arc 15 Welding wire 16 Melt pool 18 Support arm 19 Speaker 20 Sound source 21 Base material 22 Groove 24 Vibration generator
Claims (4)
に溶接トーチの電極を位置させて、該電極の先端から発
するアークで溶接ワイヤを溶融させることにより開先底
部に形成される溶融プールに対して、該溶融プールの固
有振動数に相当する周波数の音波を送り、溶融プールに
振動を与えて攪拌しながら溶接することを特徴とする攪
拌溶接方法。1. A molten pool formed at the bottom of a groove by positioning an electrode of a welding torch at a groove of a base material for performing butt welding and melting a welding wire with an arc emitted from the tip of the electrode. In addition, a stir welding method characterized in that a sound wave having a frequency corresponding to the natural frequency of the molten pool is sent, and the molten pool is vibrated and welded while stirring.
り溶融プールに振動を与えるようにすることに代えて、
母材に直接振動を与えて溶融プールに振動を与えるよう
にする請求項１記載の攪拌溶接方法。2. Instead of causing the molten pool to vibrate by sending sound waves to the molten pool,
The stirring welding method according to claim 1, wherein vibration is directly applied to the base material so as to apply vibration to the molten pool.
音波発生源に接続したスピーカを支持させて、該スピー
カを突き合わせ溶接する母材の開先底部に形成される溶
融プールへ向けるようにし、該溶融プールの固有振動数
に相当する周波数の音波を上記スピーカから溶融プール
に対し送るようにした構成を有することを特徴とする攪
拌溶接装置。3. A required portion of a torch body of a welding torch,
The speaker connected to the sound source is supported, and the speaker is directed to the molten pool formed at the groove bottom of the base material to be butt-welded, and a sound wave having a frequency corresponding to the natural frequency of the molten pool is generated as described above. An agitation welding apparatus having a configuration for sending from a speaker to a molten pool.
持させて、スピーカからの音波で溶融プールに振動を与
えるようにすることに代えて、母材上に振動発生装置を
備え、該振動発生装置で直接母材に振動を与えて溶融プ
ールに振動を与えるようにした請求項３記載の攪拌溶接
装置。4. A vibration generator is provided on a base material instead of having a speaker supported by a torch body of a welding torch and applying vibration to a molten pool by sound waves from the speaker. The stirring welding apparatus according to claim 3, wherein the vibration is directly applied to the base material to apply vibration to the molten pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000005349A JP2001198677A (en) | 2000-01-14 | 2000-01-14 | Agitation welding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000005349A JP2001198677A (en) | 2000-01-14 | 2000-01-14 | Agitation welding method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001198677A true JP2001198677A (en) | 2001-07-24 |
Family
ID=18534027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000005349A Pending JP2001198677A (en) | 2000-01-14 | 2000-01-14 | Agitation welding method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001198677A (en) |
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