JPS583791A - Welding method of copper or copper alloy - Google Patents
Welding method of copper or copper alloyInfo
- Publication number
- JPS583791A JPS583791A JP9984481A JP9984481A JPS583791A JP S583791 A JPS583791 A JP S583791A JP 9984481 A JP9984481 A JP 9984481A JP 9984481 A JP9984481 A JP 9984481A JP S583791 A JPS583791 A JP S583791A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- welding
- consumable electrode
- consumable
- copper
- 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
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、銅または銅合金の溶接方法に係り、特に、融
合不良、オーバラップビード等の溶接欠陥を生じること
なく、良好な溶接部を得ることができる銅または銅合金
の溶接方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding method for copper or copper alloys, and in particular to a method for welding copper or copper alloys, which can obtain a good welded joint without causing welding defects such as poor fusion or overlap beads. Concerning a method of welding alloys.
従来、銅または銅合金は軟鋼等に比較し、熱伝導度が5
〜8倍以上であるため、熱の逸散速度が早く、被溶接材
が溶融しにくり、また、溶融金属の凝固速度も早いため
、溶融金属のぬれが著しく悪く、ブローホール、オーバ
ラップ、融合不良等の溶接欠陥を生ずる。そのためバー
ナ等で溶接部を500〜800Cに予熱し溶接を行って
いる。Traditionally, copper or copper alloys have a thermal conductivity of 5 compared to mild steel etc.
~8 times or more, the heat dissipates quickly, making it difficult for the material to be welded to melt.Also, the solidification rate of the molten metal is also fast, resulting in extremely poor wetting of the molten metal, resulting in blowholes, overlaps, etc. This causes welding defects such as poor fusion. Therefore, welding is performed by preheating the welded part to 500 to 800C using a burner or the like.
このように高湛に予熱しながら、溶接を行う作業は非常
に多くの労力を必要とし、また、作業環境も悪く、溶接
の自動化のさまたげとなっていた。In this way, welding while preheating at a high level requires a great deal of labor, and the working environment is also poor, which hinders the automation of welding.
本発明の目的は、銅または銅合金に対し、予熱を行なわ
ないで、良好な溶接結果が得られると共に自動溶接が可
能な銅及び銅合金の溶接方法を提供するにある。An object of the present invention is to provide a method for welding copper and copper alloys, which allows good welding results to be obtained without preheating the copper or copper alloys, and which enables automatic welding.
本発明は、非消耗電極と消耗電極を組み合わせれば、溶
着量一定の基で、溶接入力を自由に制御できることを実
験により確認し、非消耗電極を先行電極、消耗電極を後
行電極とし、非消耗電極と消耗電極とめ間隔をドパラッ
プ融合不良ビードが生じない距離に保ちながら溶接する
ことにより、溶接欠陥の発生を阻止し、ビードが良好に
形成できるようにしたものである。The present invention has confirmed through experiments that by combining a non-consumable electrode and a consumable electrode, it is possible to freely control the welding input while keeping the amount of welding constant. By performing welding while maintaining the spacing between the non-consumable electrode and the consumable electrode at a distance that does not cause Doparap unfused beads, welding defects can be prevented and beads can be formed well.
第1図は、非消耗電極と消耗電極を組み合わせた本発明
法と従来MIG溶接法における溶接入力とワイヤ送給速
度の関係を示す。消耗電極の溶接電流は200Aである
。ワイヤはMG990(1,6φ)である。MIG法は
溶接入力の増加に伴ってワイヤ送給速度が増加する。そ
のため、溶接入力がワイヤの溶融に使われ、被溶接材を
溶融するエネルギーを十分与えることができなり0それ
に対し本発明法では、消耗電極の溶接電流を一定にし、
非消耗電極の溶接電流を可変することができるので、図
に示すように、ワイヤ送給速度、すなわち溶着量を一定
の基で溶接入力を大幅に変化することができる。このこ
とは、非消耗電極で局部的に加熱し、熱の逸散を押える
ことができることを示している。そこで、第2図に示す
ように、非消耗電極2を先行電極として局部加熱を行い
、後行の消耗電極4でワイヤ5と被溶接材1の間にアー
ク6を発生させて溶接すれば良いことがわかる。しかし
、非消耗電極2と消耗電極4との距離t1すなわち両電
極の中心線の延長が被溶接材1と接する点間の距f11
が大きいと、後行電極に対する先行の局部加熱効果が少
なくなり、オーバラップ融合不良ピードが生じるので、
電極間距離は電流値によって変るが、7鴫以下にするの
が好ましい。第3図(a)に、電極間距離と溶込み断面
積との関係を示す。消耗電極溶接電流は350Aである
。FIG. 1 shows the relationship between welding input and wire feed speed in the present invention method combining a non-consumable electrode and a consumable electrode and the conventional MIG welding method. The welding current of the consumable electrode is 200A. The wire is MG990 (1.6φ). In the MIG method, the wire feeding speed increases as the welding input increases. Therefore, the welding input is used to melt the wire, and it is not possible to provide enough energy to melt the material to be welded.In contrast, in the method of the present invention, the welding current of the consumable electrode is kept constant;
Since the welding current of the non-consumable electrode can be varied, as shown in the figure, the welding input can be changed significantly with the wire feeding speed, ie, the amount of welding fixed, being constant. This shows that non-consumable electrodes can be used to locally heat and suppress heat dissipation. Therefore, as shown in Fig. 2, local heating may be performed using the non-consumable electrode 2 as the leading electrode, and the following consumable electrode 4 may be used to generate an arc 6 between the wire 5 and the workpiece 1 for welding. I understand that. However, the distance t1 between the non-consumable electrode 2 and the consumable electrode 4, that is, the distance f11 between the point where the extension of the center line of both electrodes touches the workpiece 1
If is large, the leading local heating effect on the trailing electrode will be reduced, resulting in an overlap fusion failure peak.
The distance between the electrodes varies depending on the current value, but is preferably 7 or less. FIG. 3(a) shows the relationship between the interelectrode distance and the penetration cross-sectional area. The consumable electrode welding current is 350A.
第3図(b)は溶込み断面積を示す図である。電極間距
離が大きくなると溶込み断面積は減少し7ym以上にな
ると母材に対して溶は込んでいないオーバラップビード
を生ずるようになシ、溶接条件をさらに検討する必要が
生じるので、電極間距離を7關以下にすることが好まし
い。FIG. 3(b) is a diagram showing the cross-sectional area of penetration. As the distance between the electrodes increases, the cross-sectional area of penetration decreases, and when the distance is 7 mm or more, an overlapping bead that is not penetrated into the base metal will occur.Therefore, it is necessary to further consider the welding conditions. It is preferable that the distance be 7 degrees or less.
第4図は本発明実施例の装置の構成図を示す。FIG. 4 shows a configuration diagram of an apparatus according to an embodiment of the present invention.
溶接トーチは先行電極の非消耗電極2.2′と後行の消
耗電極4から構成されており、溶接電源7からそれぞれ
に電流が供給され、被溶接材1との間にアーク3.6を
発生させ溶接を行う。消耗電極4にはワイヤ送給装置1
3によりワイヤ5が送られる。The welding torch is composed of a leading non-consumable electrode 2.2' and a trailing consumable electrode 4, each of which is supplied with current from a welding power source 7, creating an arc 3.6 between it and the workpiece 1. generated and welded. The consumable electrode 4 has a wire feeding device 1
3 feeds the wire 5.
溶接電流はアークの干渉を防ぐため、スイッチング素子
8.E、’及び9.9′により各電極に交互に供給する
ように構成されている。また、これらの素子は制御装置
12により制御される。さらに、非消耗電極のアーク安
定のために、高周波重畳装置11、消耗電極のアーク安
定抵抗10゜10′が接続されている。本装置を用いて
、板厚10+a+の銅板を溶接したところ、予熱を行わ
なくても、ブロホール、オーバラップ等の溶接欠陥も生
ぜず非常に良好な溶接部が得られ友。溶接条件は、非消
耗電極: 350A、消耗電極:20OA。The welding current is passed through the switching element 8 to prevent arc interference. E,' and 9.9' are configured to alternately supply each electrode. Further, these elements are controlled by a control device 12. Furthermore, in order to stabilize the arc of the non-consumable electrode, a high frequency superimposing device 11 and an arc stabilizing resistor 10° 10' of the consumable electrode are connected. When welded a copper plate with a thickness of 10+a+ using this device, a very good weld was obtained without any welding defects such as blowholes or overlaps, even without preheating. The welding conditions were: non-consumable electrode: 350A, consumable electrode: 20OA.
電極間距離:1.5諺、溶接速度:200簡/min
。Interelectrode distance: 1.5cm, welding speed: 200cm/min
.
切換周波数:200Hz、シールドガスはArである。Switching frequency: 200Hz, shielding gas is Ar.
ワイヤに鋼溶接用のMG990 (1,6φ)を用いた
。第5図は、従来MIG法(a)と本発明法(b)のピ
ード断面の顕微鏡写真を示す。本発明法は、ビード形状
が平滑であり、十分な溶込みが得られている。このよう
に本発明方法を用いれば、バーナ等による予熱が必要な
いので重接能率が向上する。また、容易に自動化を計る
ことができる。同じ溶接電流による従来法では、図に示
す如く溶は込み不良が生じた。MG990 (1.6φ) for steel welding was used as the wire. FIG. 5 shows microscopic photographs of the cross sections of peas obtained by the conventional MIG method (a) and the method of the present invention (b). In the method of the present invention, the bead shape is smooth and sufficient penetration is obtained. As described above, if the method of the present invention is used, there is no need for preheating using a burner or the like, so the efficiency of overlapped welding is improved. Also, it can be easily automated. In the conventional method using the same welding current, poor penetration occurred as shown in the figure.
以上の如く、本発明法によれば、ビード表面が滑らかで
、十分な溶は込みを有するすぐれ7’C溶接が得られた
。また、溶接能率も大幅に向上できた。As described above, according to the method of the present invention, an excellent 7'C weld with a smooth bead surface and sufficient penetration was obtained. Welding efficiency was also significantly improved.
第1図は溶接入力とワイヤ送給速度の関係を表わす線図
、第2図は、本発明法の各電極の配置図、第3図は電極
間距離と溶込み断面積との関係を示す線図、第4図は本
発明法を実施する装置の例のブロック図、第5図は、従
来のMIG法と本発明法で溶接した溶接ピード断面の顕
微鏡写真である。
1・・・被溶接材、2.2′・・・非消耗電極、3・・
・非消耗電極アーク、4・・・消耗電極、5・・・ワイ
ヤ、6・・・消耗電極アーク、7・・・溶接電源、8.
8’ 、9゜9′・・・スイッチング素子、10・・・
アーク安定抵抗、11・・・高周波重畳装置、12・・
・制御装置、13・・・ワイヤ送給装置。Figure 1 is a diagram showing the relationship between welding input and wire feeding speed, Figure 2 is a diagram showing the arrangement of each electrode in the method of the present invention, and Figure 3 is a diagram showing the relationship between the distance between electrodes and the cross-sectional area of penetration. 4 is a block diagram of an example of an apparatus for carrying out the method of the present invention, and FIG. 5 is a microscopic photograph of a cross section of a weld bead welded by the conventional MIG method and the method of the present invention. 1... Material to be welded, 2.2'... Non-consumable electrode, 3...
- Non-consumable electrode arc, 4... Consumable electrode, 5... Wire, 6... Consumable electrode arc, 7... Welding power source, 8.
8', 9°9'... switching element, 10...
Arc stabilizing resistance, 11... High frequency superimposition device, 12...
- Control device, 13... wire feeding device.
Claims (1)
アーク溶接を行う方法において、先行電極を非消耗電極
、後行電極を消耗電極とし、前記非消耗電極と消耗電極
との間隔をオーバラップ融合不良ビードが生じない距離
に保ちながら溶接することを特徴とする銅または銅合金
の溶接方法。 2、特許請求の範囲第1項において、非消耗電極と消耗
電極の電極間距離を、各電極の中心線が被溶接材と接す
る点で7簡以下とすることを特徴とする銅ま之は銅合金
の溶接方法。 3、特許請求の範囲第1項又は第2項において、先行電
極で被溶接材を溶融させる銅または銅合金の溶接方法。[Claims] 1. A method of performing arc welding by alternately supplying a welding current to a non-consumable electrode and a consumable electrode, wherein the leading electrode is a non-consumable electrode, the trailing electrode is a consumable electrode, and the non-consumable electrode A method for welding copper or copper alloys, characterized in that welding is performed while maintaining a distance between a consumable electrode and a consumable electrode at a distance that does not cause overlapping and poorly fused beads. 2. A copper wire according to claim 1, characterized in that the distance between the non-consumable electrode and the consumable electrode is 7 or less at the point where the center line of each electrode touches the material to be welded. How to weld copper alloys. 3. A method for welding copper or copper alloy according to claim 1 or 2, in which the material to be welded is melted by a leading electrode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9984481A JPS583791A (en) | 1981-06-26 | 1981-06-26 | Welding method of copper or copper alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9984481A JPS583791A (en) | 1981-06-26 | 1981-06-26 | Welding method of copper or copper alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS583791A true JPS583791A (en) | 1983-01-10 |
Family
ID=14258106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9984481A Pending JPS583791A (en) | 1981-06-26 | 1981-06-26 | Welding method of copper or copper alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS583791A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012017913A1 (en) * | 2010-08-05 | 2012-02-09 | 大陽日酸株式会社 | Complex weld method and welding torch for complex welds |
WO2013118865A1 (en) * | 2012-02-08 | 2013-08-15 | 大陽日酸株式会社 | Composite welding method and welding torch for composite welding |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55106679A (en) * | 1979-02-13 | 1980-08-15 | Hitachi Ltd | Arc welding method |
JPS55128366A (en) * | 1979-03-28 | 1980-10-04 | Hitachi Ltd | High-speed arc welding method |
-
1981
- 1981-06-26 JP JP9984481A patent/JPS583791A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55106679A (en) * | 1979-02-13 | 1980-08-15 | Hitachi Ltd | Arc welding method |
JPS55128366A (en) * | 1979-03-28 | 1980-10-04 | Hitachi Ltd | High-speed arc welding method |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012017913A1 (en) * | 2010-08-05 | 2012-02-09 | 大陽日酸株式会社 | Complex weld method and welding torch for complex welds |
CN103118827A (en) * | 2010-08-05 | 2013-05-22 | 大阳日酸株式会社 | Complex weld method and welding torch for complex welds |
JP5589079B2 (en) * | 2010-08-05 | 2014-09-10 | 大陽日酸株式会社 | Composite welding method |
CN103118827B (en) * | 2010-08-05 | 2015-11-25 | 大阳日酸株式会社 | Complex welding method and composite welding welding torch |
WO2013118865A1 (en) * | 2012-02-08 | 2013-08-15 | 大陽日酸株式会社 | Composite welding method and welding torch for composite welding |
JP2013158826A (en) * | 2012-02-08 | 2013-08-19 | Taiyo Nippon Sanso Corp | Method of composite welding and welding torch for composite welding |
US9925622B2 (en) | 2012-02-08 | 2018-03-27 | Taiyo Nippon Sanso Corporation | Hybrid welding method and welding torch for hybrid welding |
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