JPS58154460A - Method for tig welding - Google Patents
Method for tig weldingInfo
- Publication number
- JPS58154460A JPS58154460A JP3608682A JP3608682A JPS58154460A JP S58154460 A JPS58154460 A JP S58154460A JP 3608682 A JP3608682 A JP 3608682A JP 3608682 A JP3608682 A JP 3608682A JP S58154460 A JPS58154460 A JP S58154460A
- Authority
- JP
- Japan
- Prior art keywords
- torch
- tig
- welding
- arc
- oxide film
- 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
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はＴＩＧ溶接方法に係り，特にアルミニウム等の
如き母材表面の酸化皮膜の融点が母材のそれよりも高い
金属の浴接に好適な方法ＶＣ関するものである。[Detailed Description of the Invention] The present invention relates to a TIG welding method, and in particular to a method VC suitable for bath welding metals such as aluminum whose oxide film on the surface of the base metal has a higher melting point than that of the base metal. .
ＴＩＧ溶接は、イナートガスアーク溶接の１棹であって
、雰囲気中でタングステン棒を１つの電極として母材と
の曲にアーク’に％生させ、このアークの中に溶加材を
突込んで浴接するものである。TIG welding is a type of inert gas arc welding, in which a tungsten rod is used as an electrode to generate an arc in a curve with the base metal in an atmosphere, and filler metal is inserted into this arc to perform bath welding. It is something.
このＴＩＧ溶接には、電源に直流を用いる直流ＴＩＧ溶
接と．交流を用いる交流ＴＩＧ溶接とがある。直流ＴＩ
Ｇ溶接には，トーチを負とし母相を正とする正極性溶接
と、トーチを正とし母材を負とする逆極性溶接とがある
。この逆極性溶接には、シールドガスとして噴射したア
ルゴン等のガスがイオン化し，母材表面にあたり酸化皮
膜を除去する作用（いわゆるクリーニング作用）がある
。しかし、溶は込みは浅い。一方正極性溶接によれば、
′成子が母材に衝突して溶は込みは集中的に深くなるが
、クリーニング作用はない。There are two types of TIG welding: DC TIG welding, which uses direct current as a power source. There is AC TIG welding that uses alternating current. DC TI
G welding includes positive polarity welding, in which the torch is negative and the matrix is positive, and reverse polarity welding, in which the torch is positive and the base metal is negative. In this reverse polarity welding, a gas such as argon injected as a shielding gas is ionized and hits the surface of the base material to remove an oxide film (so-called cleaning effect). However, the melting depth is shallow. On the other hand, according to positive polarity welding,
The melt penetrates intensively and deepens as the particles collide with the base metal, but there is no cleaning effect.
一般に、母材の開先面に酸化皮膜が残っていると、酸化
物巻き込みの溶接欠陥が発生しゃすい。Generally, if an oxide film remains on the groove surface of the base metal, welding defects due to oxide entrainment are likely to occur.
特に、アルミニウム表面の酸化皮膜は耐火性が強いので
溶接に際しては、入念な前処理が必要となり、溶接作業
が煩雑となる。In particular, since the oxide film on the aluminum surface has strong fire resistance, careful pretreatment is required during welding, making the welding work complicated.
本発明の目的は、係る従来の難点を解決し、溶接作業が
容易とされると共に溶は込みが深（溶接強畠も高（なる
ＴＩＧ浴接方法を提供するにある。It is an object of the present invention to provide a TIG bath welding method that solves the conventional difficulties and allows for easy welding work and deep penetration (and high weld strength).
この目的を達成するために本発明は、直流正極性ＴＩＧ
トーチよりも交流ＴＩＧトーチ又は直流逆極性ＴＩＧ）
−テを先行させ、該交流ＴＩＧ）−チ又は直流逆極性Ｔ
ＩＧ）−チでアークを発生させて母材表面の酸化皮膜を
除去、しながら、前記１１１：
直流正極性ＴＩＧ）−チによって溶接するようにしたも
のである。To achieve this objective, the present invention provides a direct current positive polarity TIG
(AC TIG torch or DC reverse polarity TIG)
- Te is preceded by the AC TIG) - Chi or DC reverse polarity T
The oxide film on the surface of the base material is removed by generating an arc with IG)-chi, while welding is carried out with the above-mentioned 111: DC positive polarity TIG)-chi.
以下図面を参照して本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.
第１図は本発明の実施例の方法を説明する図であって、
開先中心を通る断面図である。又第２図ｒ！：ｉ編１図
ＩＩ −１１線に沿う断面図である。第１図および第２
図において、ｌＯｉ母材、１２は直流正極性ＴＩＧトー
チ、１４は交流ＴＩＧトーチ又は直流逆極性ＴＩＧトー
チである。１６．１８は各トーチに直流を供給する溶接
機、２２．２４は各トーチの電極、２６はシールドカバ
ーである。FIG. 1 is a diagram illustrating a method according to an embodiment of the present invention,
It is a sectional view passing through the groove center. Also, Figure 2 r! : Part i, Figure 1, is a sectional view taken along line II-11. Figures 1 and 2
In the figure, the lOi base material, 12 is a DC positive polarity TIG torch, and 14 is an AC TIG torch or a DC reverse polarity TIG torch. 16 and 18 are welding machines that supply direct current to each torch, 22 and 24 are electrodes of each torch, and 26 is a shield cover.
トーチ１２にはヘリウムガスＨｅがシールドガスとして
流されており、電極２２に狛、母材ｌＯに正の′電位が
印加されている。Helium gas He is passed through the torch 12 as a shielding gas, and a positive potential is applied to the electrode 22 and the base material lO.
）−ｆ１４ではアルゴンガスＡｒがシールトガ
−スとして流されており、交流又ｉｊ電極２４に正、母
材ｌＯに狛の電位が印加されている。このトーチ１４の
アーク２８によって、母材１０表面の酸化皮膜２９を除
去させつつ、トーチ１２及び１４を一体に矢印Ｙ方向に
移動し、トーチ１２のアー１
り３０へ溶接ワイヤ３】を供給して浴接を行う。)-f14, argon gas Ar is used as a seal gas
A positive potential is applied to the alternating current or ij electrode 24, and a negative potential is applied to the base material lO. The arc 28 of the torch 14 removes the oxide film 29 on the surface of the base material 10, while moving the torches 12 and 14 together in the direction of the arrow Y to supply the welding wire 3 to the arc 30 of the torch 12. and perform a bathing ceremony.
なおアーク２８によって清浄化された部分３２は、内部
に不活性カスが流通されたシールド力・（−２６で被わ
れているため再酸化が防止されている。Note that the portion 32 that has been cleaned by the arc 28 is covered with a shielding force (-26) in which inert scum is circulated, so that reoxidation is prevented.
３４はこのような溶接作業によって生じた浴接ビードで
ある。34 is a bath weld bead produced by such welding work.
この浴接方法によれば、交流又は逆極性のトーチ１４に
よって酸化皮膜２９が除去されトーチ１２によって正極
性＠流浴接されるので、治接深さが深くなると共に、前
処理も、交流ＴＩＧ溶接やＭＩＧ溶接の場合と回程肚の
前処理で足り、溶接作業が容易とされる。さらに、先行
するトーチ１４のアーク２８によって母材ｌＯが予熱さ
れる効果もあり、より深い溶は込みが可能とされる。According to this bath welding method, the oxide film 29 is removed by the alternating current or reverse polarity torch 14, and the torch 12 performs positive polarity @flow bath welding. In the case of welding or MIG welding, pretreatment during the process is sufficient, making the welding work easier. Furthermore, there is also the effect that the base metal 1O is preheated by the arc 28 of the preceding torch 14, making deeper melt penetration possible.
上記のトーチ１４１’、ｌ：、王としてクリーニング作
用を行うためのものであるから、通電する電流値はこの
クリーニング作用が十分に行われる程紅のものであれば
よい。但し予熱効果を積極的に活用する場合には、トー
チ１２による溶接に悲影響を与え７：Ｃい範囲で適当な
大きさの電流値とすることができる。Since the torches 141', 141' and 141' are used to perform a cleaning action, the current value to be applied may be red enough to perform this cleaning action sufficiently. However, if the preheating effect is actively used, it will have a negative effect on welding by the torch 12, and the current value can be set to an appropriate value within a range of 7:C.
なお本発明の方法に開先形状が限定されるものでｎ ７
；Ｃいが、第３図（ａ）〜（Ｃ）のように開先にルート
面５０がある用台には−、ルート面５０のクリーニング
もイ〕えるように、紀４図（ａ）〜（ｃ）に示さｔする
ようにルート面５０に開先に同って開くＶ溝５２．５４
．５６を設け、クリーニング作用がルート面５０の中ま
で届くようにするとより効果的である。Note that the method of the present invention is limited to the groove shape.
; However, in the case where the groove has a root surface 50 as shown in FIGS. 3(a) to (C), the groove shown in FIG. ~ As shown in (c), there are V grooves 52 and 54 that open along the groove on the root surface 50.
．． 56 so that the cleaning action reaches into the root surface 50 is more effective.
なおこのＶ溝の可調〇１５〜１．０東根度であれば溶接
に与えわ影＃は殆Ａ７どない。Furthermore, if this V-groove has an adjustable degree of 015 to 1.0, there will be almost no shadow #A7 on the welding.
以上の工すＶＬ本発明の溶接方法によれは、浴接作業か
容易とされると共に浴は込みも深いものとなる。しかし
て特にアルミニウム、マグネシウム等の表（社）酸化皮
膜の融点か母材のそれよりも高い輩属の浴接に好適であ
る。The VL welding method of the present invention as described above facilitates bath welding work and also allows for deep bath welding. Therefore, it is particularly suitable for bath welding of materials such as aluminum and magnesium whose melting point of the oxide film is higher than that of the base material.
第１図は本発明の詳細な説明図、第２図は第１図ＩＩ
−ＩＩ 線に沿５１１．ＩＴ面図、第３図（ａ） 〜（
ｃ）ｆｆおよび第４図（ａ）〜（ｃ）は開先およびルー
ト面の形状を示す断面図である。
ｌＯ・・・母材、１２・・・直流正極性ＴＩＧトーチ、
１４・・・交流又はｉＭ＆逆極性ＴＩＧ）−チ、２２．
２４・・・電極、２Ｅｌ ３０・・・アーク、３４−
・・溶接ヒート、５０・・・ルート面。
代」」１人 鵜 沼 辰 之
（ほか２名）
（７）Figure 1 is a detailed explanatory diagram of the present invention, Figure 2 is Figure 1 II
-II along line 511. IT surface diagram, Figure 3 (a) - (
c) ff and FIGS. 4(a) to 4(c) are cross-sectional views showing the shapes of the groove and root surface. lO...Base material, 12...DC positive polarity TIG torch,
14...AC or iM&reverse polarity TIG)-chi, 22.
24... Electrode, 2El 30... Arc, 34-
...Welding heat, 50...Root surface. 1 person Tatsuyuki Unuma (and 2 others) (7)
Claims (5)
又は直流逆極性ＴＩＧトーチを先行させ、該交流ＴＩＧ
トーチ又は直流逆極性ＴＩＧトーチでアークを発生させ
て母材表面の酸化皮膜を除去しなから、前記直流正極性
ＴＩＧトーチによって溶接することを特徴とするＴＩＧ
浴接方法。(1) An AC TIG torch or a DC reverse polarity TIG torch is placed in front of the DC positive polarity TIG torch, and the AC TIG
TIG, characterized in that the oxide film on the surface of the base material is removed by generating an arc with a torch or a DC reverse polarity TIG torch, and then welding is performed with the DC positive polarity TIG torch.
How to bathe.
トーチは、シールドガスとしてアルゴンガスを採用して
いることを特徴とする特許請求の範囲第１項記載のＴＩ
Ｇ溶接方法。(2) Said AC TIG) - H or DC reverse polarity TIG
TI according to claim 1, characterized in that the torch employs argon gas as a shielding gas.
G welding method.
被うことを特徴とする特許請求の範囲第１項又は第２項
記載のＴＩ’Ｇ溶接方法。(3) The TI'G welding method according to claim 1 or 2, characterized in that the surface of the base material from which the oxide film has been removed is covered with an inert gas.
を形成することを特徴とする特許請求の範囲第１項ない
し第３項のいずれか１項に記載のＴＩＧ溶接方法。(4) TIG welding according to any one of claims 1 to 3, characterized in that a V groove that opens around the groove is formed on the root surface of the base material groove. Method.
る特許請求の範囲第１項ないし第４項のいずれか１項に
記載のＴＩＧ溶接方法。(5) The TIG welding method according to any one of claims 1 to 4, wherein the base material is an aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3608682A JPS58154460A (en) | 1982-03-08 | 1982-03-08 | Method for tig welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3608682A JPS58154460A (en) | 1982-03-08 | 1982-03-08 | Method for tig welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58154460A true JPS58154460A (en) | 1983-09-13 |
Family
ID=12459930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3608682A Pending JPS58154460A (en) | 1982-03-08 | 1982-03-08 | Method for tig welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58154460A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5859402A (en) * | 1994-12-24 | 1999-01-12 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Process for the welding of work pieces with laser beams |
| US6191379B1 (en) * | 1999-04-05 | 2001-02-20 | General Electric Company | Heat treatment for weld beads |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN107378195A (en) * | 2017-09-01 | 2017-11-24 | 中国核工业华兴建设有限公司 | A kind of large-scale double-layer barrel one side welding with back formation welding method of nuclear power station |
| WO2018091147A1 (en) * | 2016-11-18 | 2018-05-24 | Linde Aktiengesellschaft | Method of cleaning a workpiece after a thermal joining process with cathodic cleaning; cleaning device and processing gas |
-
1982
- 1982-03-08 JP JP3608682A patent/JPS58154460A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5859402A (en) * | 1994-12-24 | 1999-01-12 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Process for the welding of work pieces with laser beams |
| US6191379B1 (en) * | 1999-04-05 | 2001-02-20 | General Electric Company | Heat treatment for weld beads |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| WO2018091147A1 (en) * | 2016-11-18 | 2018-05-24 | Linde Aktiengesellschaft | Method of cleaning a workpiece after a thermal joining process with cathodic cleaning; cleaning device and processing gas |
| CN110087811A (en) * | 2016-11-18 | 2019-08-02 | 林德股份公司 | Method, cleaning device and the processing gas using the clean cleaning workpiece of cathode after thermal bonding processing |
| CN107378195A (en) * | 2017-09-01 | 2017-11-24 | 中国核工业华兴建设有限公司 | A kind of large-scale double-layer barrel one side welding with back formation welding method of nuclear power station |
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