JP3218341B2 - Consumable electrode type arc welding method and its welding machine - Google Patents
Consumable electrode type arc welding method and its welding machineInfo
- Publication number
- JP3218341B2 JP3218341B2 JP05360792A JP5360792A JP3218341B2 JP 3218341 B2 JP3218341 B2 JP 3218341B2 JP 05360792 A JP05360792 A JP 05360792A JP 5360792 A JP5360792 A JP 5360792A JP 3218341 B2 JP3218341 B2 JP 3218341B2
- Authority
- JP
- Japan
- Prior art keywords
- consumable electrode
- wire
- filler wire
- filler
- arc welding
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims description 64
- 238000000034 method Methods 0.000 title claims description 22
- 239000000945 filler Substances 0.000 claims description 65
- 238000002844 melting Methods 0.000 description 18
- 230000008018 melting Effects 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉄やステンレス鋼等の
比較的融点の高い金属の溶接に適する消耗電極式アーク
溶接方法と、その方法に使用される溶接機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a consumable electrode type arc welding method suitable for welding a metal having a relatively high melting point such as iron or stainless steel, and a welding machine used for the method.
【０００２】[0002]
【従来の技術】従来、この種消耗電極式アーク溶接方法
の一例として、特開平３−２７５２８０号に記載のもの
が開発され、提案されている。この従来のアーク溶接方
法は、図３に示すように、二本並設した消耗電極ワイヤ
１ａとフィラーワイヤ１ｂのうち、先行ワイヤとしての
消耗電極ワイヤ１ａによって母材７や溶着金属９との間
にアーク８を発生させるとともに、後行ワイヤとしての
フィラーワイヤ１ｂの先端部を溶融池１０に挿入させる
ものである。また、消耗電極ワイヤ１ａとフィラーワイ
ヤ１ｂとは、それらに流れる電流方向が互いに逆方向
（矢印ａ、ｂ）となるように溶接電源２Ｅへ接続してい
る。2. Description of the Related Art Conventionally, as an example of this kind of consumable electrode type arc welding method, a method described in Japanese Patent Application Laid-Open No. 3-275280 has been developed and proposed. As shown in FIG. 3, in this conventional arc welding method, the consumable electrode wire 1a as a leading wire among the two consumable electrode wires 1a and filler wires 1b is used to connect the base metal 7 and the deposited metal 9 with each other. The arc 8 is generated at the same time, and the tip of the filler wire 1b as the following wire is inserted into the molten pool 10. Further, the consumable electrode wire 1a and the filler wire 1b are connected to the welding power source 2E so that the directions of the currents flowing through them are opposite to each other (arrows a and b).
【０００３】かかるアーク溶接方法によれば、フィラー
ワイヤ１ｂを溶融池１０の熱で溶融させることができる
から、消耗電極ワイヤ１ａへ供給する電力量、即ち、溶
接時の入熱をさほど増大させることなく、ワイヤ全体の
溶融速度を高めることができる。従って、溶接電流を大
きくするとパッカリングや溶接歪みを生じ易いアルミニ
ウム合金等であっても、それらの不具合を生じさせるこ
となく、作業能率の高い溶接を行うことができる利点が
ある。また、前記両ワイヤ１ａ、１ｂに流れる電流の向
き（矢印ａとｂ）が反対であると、前記ワイヤ１ａ、１
ｂの各周辺で発生する磁界は互いに反発力を生じ、アー
ク８は前方（矢印Ｂ方向）へ適度に押しやられるから、
両ワイヤ１ａ、１ｂを近接させてもフィラーワイヤ１ｂ
がアーク８によって溶融、飛散されるようなこともな
い。従って、フィラーワイヤ１ｂを消耗電極ワイヤ１ａ
に接近させて設けることができ、またこれにより溶融池
１０への挿入も適切に行い得る。According to such an arc welding method, the filler wire 1b can be melted by the heat of the molten pool 10, so that the amount of power supplied to the consumable electrode wire 1a, that is, the heat input during welding, is increased significantly. In addition, the melting rate of the entire wire can be increased. Therefore, there is an advantage that even if the welding current is increased, even if it is an aluminum alloy or the like which is liable to cause puckering or welding distortion, welding with high work efficiency can be performed without causing such problems. If the directions of the currents (arrows a and b) flowing through the wires 1a and 1b are opposite, the wires 1a and 1b
The magnetic fields generated around each of b generate repulsive forces, and the arc 8 is appropriately pushed forward (in the direction of arrow B).
Even if both wires 1a and 1b are brought close to each other, filler wire 1b
Is not melted or scattered by the arc 8. Therefore, the filler wire 1b is replaced with the consumable electrode wire 1a.
, And the insertion into the molten pool 10 can be appropriately performed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
アーク溶接方法を、例えば鉄やステンレス鋼等の溶接に
適用した場合には、次のような難点を生じていた。すな
わち、鉄やステンレス等はアルミニウム合金等と比較す
ると、その融点はかなり高いため、その溶接に使用する
鉄合金等のフィラーワイヤ１ｂを溶融池１０に挿入して
も、溶融池１０の温度とフィラーワイヤ１ｂの融点との
温度差が小さいことに原因してフィラーワイヤ１ｂは溶
融し難く、その溶融速度はかなり遅くなる。従って、そ
の溶接作業能率はアルミニウム合金等の場合に比較する
とかなり低下するものとなっていた。尚、かかる難点を
解消する策としては、例えば消耗電極ワイヤ１ａから母
材７を伝ってフィラーワイヤ１ｂに導かれる電流を大き
くすることにより、フィラーワイヤ１ｂに抵抗熱を発生
させて、フィラーワイヤ１ｂを加熱させることによりそ
の溶融速度を速めることが考えられる。ところが、かか
る手段を適用すると、消耗電極ワイヤ１ａとフィラーワ
イヤ１ｂに流れる電流がともに大きくなって、これら両
ワイヤ１ａ、１ｂの各周辺に発生する磁界の反発力も大
きくなるため、アーク８が必要以上に前方へ大きく押し
やられて、適正なアーク溶接が行えなくなるという難点
が発生する。However, when the above-described arc welding method is applied to, for example, welding of iron, stainless steel, or the like, there have been the following difficulties. That is, since the melting point of iron or stainless steel is considerably higher than that of aluminum alloy or the like, even if the filler wire 1b of iron alloy or the like used for welding is inserted into the molten pool 10, the temperature of the molten pool 10 and the filler Due to the small temperature difference between the melting point of the wire 1b and the filler wire 1b, it is difficult to melt the wire 1b, and the melting speed is considerably reduced. Therefore, the efficiency of the welding operation has been considerably reduced as compared with the case of an aluminum alloy or the like. Incidentally, as a measure for solving such a problem, for example, by increasing the current guided from the consumable electrode wire 1a to the filler wire 1b through the base material 7, the resistive wire 1b is caused to generate resistive heat so that the filler wire 1b It is conceivable to increase the melting rate by heating. However, when such a means is applied, the current flowing through the consumable electrode wire 1a and the filler wire 1b increases, and the repulsive force of the magnetic field generated around each of the wires 1a, 1b also increases. A large arc is pushed forward, and it becomes impossible to perform appropriate arc welding.
【０００５】本発明は上記の点に鑑みて提案されたもの
で、融点の高い材質のものを溶接する場合であっても、
消耗電極ワイヤとフィラーワイヤとの両者間で発生する
磁界の反発力によってアークが必要以上に前方へ押しや
られるような不具合を生じさせることなく、フィラーワ
イヤの溶融速度を高め、能率のよいアーク溶接を行わせ
ることを、その目的としている。[0005] The present invention has been proposed in view of the above points, and even when welding a material having a high melting point,
The welding speed of the filler wire is increased and efficient arc welding is performed without causing a problem that the arc is pushed forward more than necessary by the repulsive force of the magnetic field generated between both the consumable electrode wire and the filler wire. Its purpose is to make it happen.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に提案された請求項１に記載の本発明に係る消耗電極式
アーク溶接方法は、消耗電極ワイヤにパルス電流を供給
してアークを発生させるとともに、該消耗電極ワイヤの
後方に配置し且つ該消耗電極ワイヤに流れる電流とは逆
方向の電流が流れるように設けたフィラーワイヤを溶融
池に挿入させる消耗電極式アーク溶接方法であって、前
記フィラーワイヤには、このフィラーワイヤに抵抗熱を
発生させるためのパルス電流を、消耗電極ワイヤに流れ
るパルス電流の位相とは逆の位相状態で供給させる方法
である。According to the first aspect of the present invention, there is provided a consumable electrode type arc welding method according to the present invention, wherein a pulse current is supplied to a consumable electrode wire to generate an arc. A consumable electrode type arc welding method for inserting a filler wire disposed behind the consumable electrode wire and provided in such a way that a current in a direction opposite to a current flowing through the consumable electrode wire flows into a molten pool, In this method, a pulse current for generating resistance heat in the filler wire is supplied to the filler wire in a state opposite to the phase of the pulse current flowing through the consumable electrode wire.
【０００７】また、上記方法を実施するために提案され
た請求項２に記載の本発明に係る消耗電極式アーク溶接
機は、アークを発生させるための消耗電極ワイヤと、該
消耗電極ワイヤに並設されたフィラーワイヤとを備えた
消耗電極式アーク溶接機であって、前記消耗電極ワイヤ
とフィラーワイヤとの両者には、互いに電流方向が逆方
向となるパルス電流を供給するための溶接電源が各々個
別に設けられ、消耗電極ワイヤに供給されるパルス電流
とフィラーワイヤに供給されるパルス電流との位相が逆
位相となるように構成されている。According to a second aspect of the present invention, there is provided a consumable electrode type arc welding machine according to the present invention for implementing the above method. A consumable electrode type arc welding machine having a filler wire provided, wherein both the consumable electrode wire and the filler wire are provided with a welding power source for supplying a pulse current in which current directions are opposite to each other. The pulse current supplied to the consumable electrode wire and the pulse current supplied to the filler wire are separately provided, and are configured to have opposite phases.
【０００８】[0008]
【作用】上記構成を特徴とする請求項１に記載の本発明
に係る消耗電極式アーク溶接方法においては、消耗電極
ワイヤに流れるパルス電流と、フィラーワイヤに流れる
パルス電流とは、その位相が逆の関係にあるため、消耗
電極ワイヤとフィラーワイヤの両者のうち、何れか一方
に大電流が流れて磁力の大きな磁界が発生しているとき
は、他方では大電流は流れておらず、弱い磁力の磁界が
発生しているに過ぎない。従って、フィラーワイヤに大
電流を流しているときに両磁界の反発力が増大するよう
なことは解消され、消耗電極ワイヤとフィラーワイヤと
の両者周辺に発生する磁界どうしの反発力は安定したも
のとなるから、消耗電極ワイヤで発生されるアークが、
それら磁界の影響によって前方側へ過当に押しやられる
ようなことを解消することができる。そして、上記の通
り、消耗電極ワイヤへ供給するパルス電流量を少なくし
たときには、フィラーワイヤへの電力量を増大させるこ
とができるから、これによってフィラーワイヤの抵抗熱
量を増加させて、高温に加熱することができる。従っ
て、溶融池に挿入されたフィラーワイヤの溶融が促進さ
れ、高融点の金属の溶接であっても、ワイヤの溶融速度
を高めることができる。In the consumable electrode type arc welding method according to the first aspect of the present invention, the pulse current flowing through the consumable electrode wire and the pulse current flowing through the filler wire have opposite phases. Therefore, when a large current flows through one of the consumable electrode wire and the filler wire to generate a magnetic field having a large magnetic force, a large current does not flow on the other, and a weak magnetic force is generated. Is merely generated. Therefore, when a large current is applied to the filler wire, the repulsive force of the two magnetic fields is prevented from increasing, and the repulsive force of the magnetic fields generated around both the consumable electrode wire and the filler wire is stable. Therefore, the arc generated by the consumable electrode wire is
It is possible to eliminate the situation where the magnetic field is excessively pushed forward by the influence of the magnetic field. As described above, when the amount of pulse current supplied to the consumable electrode wire is reduced, the amount of electric power to the filler wire can be increased, so that the resistance heat of the filler wire is increased, thereby heating the filler wire to a high temperature. be able to. Therefore, the melting of the filler wire inserted into the molten pool is promoted, and even when welding a metal having a high melting point, the melting speed of the wire can be increased.
【０００９】また、上記請求項２に記載の本発明に係る
消耗電極式アーク溶接機においては、消耗電極ワイヤと
フィラーワイヤとの両者用に各々個別に設けた溶接電源
から、消耗電極ワイヤとフィラーワイヤに各々逆位相の
パルス電流を供給することができるから、上記請求項１
記載の消耗電極式アーク溶接方法を適切に実施すること
ができる。Further, in the consumable electrode type arc welding machine according to the present invention, the consumable electrode wire and the filler wire are supplied from welding power sources respectively provided for both the consumable electrode wire and the filler wire. 2. The method according to claim 1, wherein pulse currents having opposite phases can be supplied to the wires.
The described consumable electrode type arc welding method can be appropriately performed.
【００１０】[0010]
〔装置の実施例（請求項２に対応）〕先ず、本発明に係
る消耗電極式アーク溶接機の実施例から説明する。図１
はその概略構成を示す説明図である。同図に示すアーク
溶接機は、アークを発生させるための消耗電極ワイヤ１
ａ、溶融池に先端部を挿入させるためのフィラーワイヤ
１ｂ、これら両ワイヤ１ａ、１ｂの各々に所定のパルス
電流を個別に供給するための溶接電源２ａ、２ｂ、及び
後述する各種機器から構成されている。[Embodiment of Apparatus (Corresponding to Claim 2)] First, an embodiment of a consumable electrode type arc welding machine according to the present invention will be described. FIG.
FIG. 3 is an explanatory diagram showing a schematic configuration thereof. The arc welding machine shown in FIG. 1 has a consumable electrode wire 1 for generating an arc.
a, a filler wire 1b for inserting the tip into the molten pool, welding power supplies 2a and 2b for individually supplying a predetermined pulse current to each of these wires 1a and 1b, and various devices described below. ing.
【００１１】ここで、消耗電極ワイヤ１ａとフィラーワ
イヤ１ｂは、ワイヤリール３ａ、３ｂから給送ローラ４
ａ、４ｂの駆動により順次母材側へ繰り出し可能に設け
られたもので、その各先端部は、ガスノズル５の先端開
口部から下向き状に突出されている。尚、ガスノズル５
はアルゴンガスや二酸化炭素等の所望のシールドガスを
吐出するためのものである。前記両ワイヤ１ａ、１ｂの
先端部どうしは相互に狭い間隔で略平行に配列されてい
るが、一方の消耗電極ワイヤ１ａは溶接進行方向（矢印
Ａ方向）に対して前側に、又他方のフィラーワイヤ１ｂ
はその後方側に位置するように設定されている。フィラ
ーワイヤ１ｂは、消耗電極ワイヤ１ａに対して平行な状
態に設ける以外として、例えば消耗電極ワイヤ１ａに対
して２０°程度の角度範囲内で傾斜させてもよい。Here, the consumable electrode wire 1a and the filler wire 1b are fed from the wire reels 3a, 3b to the feeding roller 4a.
The gas nozzle 5 is provided so as to be able to be sequentially fed toward the base material by driving a and b, and each of its distal ends projects downward from the distal end opening of the gas nozzle 5. The gas nozzle 5
Is for discharging a desired shielding gas such as argon gas or carbon dioxide. The tips of the two wires 1a and 1b are arranged substantially parallel to each other at a small interval, and one of the consumable electrode wires 1a is located forward with respect to the welding progress direction (the direction of arrow A) and the other is filled with filler. Wire 1b
Is set to be located on the rear side. In addition to providing the filler wire 1b in a state parallel to the consumable electrode wire 1a, the filler wire 1b may be inclined, for example, within an angle range of about 20 ° with respect to the consumable electrode wire 1a.
【００１２】二つの溶接電源２ａ、２ｂのうち、一方の
溶接電源２ａは、その陽極側が配線Ｌ１を介して消耗電
極ワイヤ１ａ用のチップ６ａに接続され、又その陰極側
が配線Ｌ２を介して母材７に接続され、消耗電極ワイヤ
１ａと母材７及び溶着金属９との相互間でアーク８を発
生可能としている。これに対し、他方の溶接電源２ｂ
は、その陰極側が配線Ｌ３を介してフィラーワイヤ１ｂ
用のチップ６ｂに接続されるとともに、その陽極側が配
線Ｌ４を介して配線Ｌ２に接続されている。但し、この
配線Ｌ２は接地され、溶接電源２ｂからは、フィラーワ
イヤ１ｂに対して、消耗電極ワイヤ１ａに流れる電流Ｉ
ａとは逆向きの電流Ｉｂが供給可能に構成されている。
そして、これら二つの溶接電源２ａ、２ｂは、図２に示
すように、消耗電極ワイヤ１ａに流れるパルス電流Ｉａ
と、フィラーワイヤ１ｂに流れるパルス電流Ｉｂとを、
互いにその位相が逆の関係となるように同期させてその
パルス電流の供給を行うように構成されている。但し、
図２の説明図は、電位の正負を無視した電流の絶対値を
図示したものである。Of the two welding power sources 2a and 2b, one of the welding power sources 2a has its anode connected to the chip 6a for the consumable electrode wire 1a via the wiring L1 and its cathode connected to the motherboard via the wiring L2. The arc 8 is generated between the consumable electrode wire 1a, the base material 7, and the weld metal 9 by being connected to the material 7. On the other hand, the other welding power source 2b
Means that the cathode side is connected to the filler wire 1b via the wiring L3.
And the anode side thereof is connected to the wiring L2 via the wiring L4. However, the wiring L2 is grounded, and a current I flowing through the consumable electrode wire 1a is supplied from the welding power source 2b to the filler wire 1b.
It is configured to be able to supply a current Ib opposite to the direction a.
As shown in FIG. 2, these two welding power sources 2a and 2b generate a pulse current Ia flowing through the consumable electrode wire 1a.
And the pulse current Ib flowing through the filler wire 1b,
The configuration is such that the pulse currents are supplied in synchronization with each other so that the phases thereof are opposite to each other. However,
The explanatory diagram of FIG. 2 illustrates the absolute value of the current ignoring the positive and negative of the potential.
【００１３】〔方法の実施例（請求項１に対応）〕次
に、上記図１で示した消耗電極式アーク溶接機を用いた
消耗電極式アーク溶接方法の一実施例について説明す
る。先ず、消耗電極ワイヤ１ａを先行ワイヤとし、フィ
ラーワイヤ１ｂを後行ワイヤとして、これら各ワイヤ１
ａ、１ｂに溶接電源２ａ、２ｂから所定のパルス電流を
供給し、一方の消耗電極ワイヤ１ａと母材７及び溶着金
属９との相互間でアーク８を発生させる。また、このア
ーク８で生じた溶融池１０には後行のフィラーワイヤ１
ｂの先端部を挿入させる。その際、消耗電極ワイヤ１ａ
を流れる電流Ｉａと、フィラーワイヤ１ｂを流れる電流
Ｉｂとは、その方向が逆方向であり、これら両電流Ｉ
ａ、Ｉｂの作用によって両ワイヤ１ａ、１ｂの廻りに発
生する磁界は互いに反発し合うものとなるから、アーク
８がその後方のフィラーワイヤ１ｂ側に偏ってフィラー
ワイヤ１ｂを溶融、飛散させることはない。Next, an embodiment of a consumable electrode type arc welding method using the consumable electrode type arc welding machine shown in FIG. 1 will be described. First, the consumable electrode wire 1a is used as a leading wire, and the filler wire 1b is used as a following wire.
A predetermined pulse current is supplied from a welding power source 2a, 2b to the a, 1b, and an arc 8 is generated between one of the consumable electrode wires 1a, the base material 7, and the weld metal 9. The molten pool 10 generated by the arc 8 has a filler wire 1
Insert the tip of b. At this time, the consumable electrode wire 1a
And the current Ib flowing through the filler wire 1b are in opposite directions.
Since the magnetic fields generated around the wires 1a and 1b due to the action of a and Ib repel each other, the arc 8 may be biased toward the filler wire 1b behind and melt and scatter the filler wire 1b. Absent.
【００１４】而して、上記各ワイヤ１ａ、１ｂに各々流
れるパルス電流Ｉａ、Ｉｂは、図２で説明した通り、そ
の位相が逆の関係にあるために、一方の消耗電極ワイヤ
１ａに大電流のパルス電流Ｉａ(max）が流れて、その周
辺に磁力の大きな磁界が発生しているときにあっては、
他方のフィラーワイヤ１ｂにはそれとは逆に小電流のパ
ルス電流Ｉｂ(min）が流れているに過ぎず、フィラーワ
イヤ１ｂ側で発生する磁界の磁力は弱いものとなる。ま
たこれとは反対に、一方の消耗電極ワイヤ１ａに小電流
Ｉａ(min）が流れているに過ぎないときには、他方のフ
ィラーワイヤ１ｂには大電流Ｉｂ(max）が流れるため、
両ワイヤ１ａ、１ｂに発生する磁界どうしの反発力に大
きな変動が生じることを防止できる。従って、両ワイヤ
１ａ、１ｂ間における磁界の反発力を安定した状態にで
きるから、アーク８が磁界の悪影響を受けて前方へ過当
に押しやられるようなこともなくなり、溶接に適したア
ーク８が得られる。Since the phases of the pulse currents Ia and Ib flowing through the wires 1a and 1b are opposite to each other as described with reference to FIG. 2, a large current flows through one of the consumable electrode wires 1a. When the pulse current Ia (max) flows through and a large magnetic field is generated around it,
Conversely, only a small pulse current Ib (min) flows through the other filler wire 1b, and the magnetic force of the magnetic field generated on the filler wire 1b side is weak. On the contrary, when only a small current Ia (min) flows through one consumable electrode wire 1a, a large current Ib (max) flows through the other filler wire 1b.
It is possible to prevent a large fluctuation in the repulsion between the magnetic fields generated in the wires 1a and 1b. Therefore, the repulsive force of the magnetic field between the two wires 1a and 1b can be stabilized, so that the arc 8 is not adversely pushed forward due to the adverse effect of the magnetic field, and the arc 8 suitable for welding is obtained. Can be
【００１５】そして、上記した通り、フィラーワイヤ１
ｂに対しては、大電流Ｉｂ(max）を断続的に供給できる
から、フィラーワイヤ１ｂはこれにより高温の抵抗熱を
生じ、高温に加熱される。従って、溶融池１０に挿入さ
せただけではフィラーワイヤ１ｂの溶融速度が遅かった
高融点の鉄やステンレス鋼等を溶接する場合であって
も、フィラーワイヤ１ｂの抵抗熱がその溶融を促進し、
その溶融速度を非常に速くすることが可能となる。As described above, the filler wire 1
For b, a large current Ib (max) can be intermittently supplied, so that the filler wire 1b generates high-temperature resistance heat and is heated to a high temperature. Therefore, even in the case of welding high melting point iron, stainless steel, or the like in which the melting rate of the filler wire 1b is low only by being inserted into the molten pool 10, the resistance heat of the filler wire 1b promotes the melting,
The melting rate can be made very high.
【００１６】尚、本発明では、溶接対象が鉄やステンス
レ鋼等に限定されないことは言うまでもなく、これらよ
りも融点が高いもの、或いは低いものの何れに対しても
適用可能である。また、請求項１記載の本発明に係るア
ーク溶接方法は、請求項２記載のアーク溶接機の使用に
限定されないことも勿論である。In the present invention, it is needless to say that the object to be welded is not limited to iron, stainless steel or the like, and the present invention can be applied to any of those having a higher or lower melting point than these. Further, the arc welding method according to the present invention described in claim 1 is of course not limited to the use of the arc welding machine described in claim 2.
【００１７】[0017]
【発明の効果】以上の説明から理解されるように、請求
項１記載の本発明に係る消耗電極式アーク溶接方法によ
れば、位相が逆のパルス電流を用いることで、消耗電極
ワイヤとフィラーワイヤとの両者間に発生する磁界の反
発力を安定化させて、アークが磁界の悪影響を受けて過
当に前方に押しやられるようなことを解消できると同時
に、フィラーワイヤへの供給電力量を増大させて、その
抵抗熱によりフィラーワイヤの溶融を促進できるから、
フィラーワイヤの溶融が困難であった融点の高い材質の
溶接を行う場合にあっても、フィラーワイヤの溶融速度
を高めて、高速度の能率のよいアーク溶接を行えるとい
う格別な効果が得られる。しかも、本発明では、消耗電
極ワイヤとフィラーワイヤとを用いた従来の消耗電極式
アーク溶接方法の利点を損なうことなく上記効果を得る
に至ったもので、溶接歪み等の少ない好ましい溶接が実
現できる利点がある。また、請求項２記載の本発明に係
る消耗電極式アーク溶接機によれば、消耗電極ワイヤと
フィラーワイヤとの両者に対して、個別に設けた二つの
溶接電源から逆位相のパルス電流を各々供給することが
できるから、上記消耗電極式アーク溶接方法の適正な実
施に寄与する。As can be understood from the above description, according to the consumable electrode type arc welding method according to the present invention, the consumable electrode wire and the filler are used by using a pulse current having an opposite phase. By stabilizing the repulsive force of the magnetic field generated between the wire and the wire, it is possible to prevent the arc from being excessively pushed forward due to the adverse effect of the magnetic field and increase the amount of power supplied to the filler wire Since the melting of the filler wire can be promoted by the resistance heat,
Even in the case of welding a material having a high melting point, which has been difficult to melt the filler wire, an exceptional effect is obtained in which the melting speed of the filler wire is increased and high-speed and efficient arc welding can be performed. Moreover, in the present invention, the above-mentioned effect is obtained without impairing the advantages of the conventional consumable electrode type arc welding method using the consumable electrode wire and the filler wire, and preferable welding with little welding distortion or the like can be realized. There are advantages. Further, according to the consumable electrode type arc welding machine according to the present invention as set forth in claim 2, for both the consumable electrode wire and the filler wire, pulse currents of opposite phases are respectively supplied from two welding power sources provided separately. Since it can be supplied, it contributes to proper implementation of the above consumable electrode type arc welding method.
【図１】本発明に係る消耗電極式アーク溶接機の一実施
例を示す説明図。FIG. 1 is an explanatory view showing one embodiment of a consumable electrode type arc welding machine according to the present invention.
【図２】消耗電極ワイヤとフィラーワイヤとの両者に供
給するパルス電流を示す説明図。FIG. 2 is an explanatory diagram showing a pulse current supplied to both a consumable electrode wire and a filler wire.
【図３】従来の消耗電極式アーク溶接機の一例を示す説
明図。FIG. 3 is an explanatory view showing an example of a conventional consumable electrode type arc welding machine.
１ａ 消耗電極ワイヤ １ｂ フィラーワイヤ ２ａ，２ｂ 溶接電源 ５ ガスノズル ７ 母材 ８ アーク ９ 溶着金属 １０ 溶融池 Ｉａ，Ｉｂ パルス電流 1a Consumable electrode wire 1b Filler wire 2a, 2b Welding power supply 5 Gas nozzle 7 Base metal 8 Arc 9 Weld metal 10 Weld pool Ia, Ib Pulse current
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−182071（ＪＰ，Ａ) 特開 昭59−16680（ＪＰ，Ａ) 特開 昭57−72772（ＪＰ，Ａ) 特開 昭55−122681（ＪＰ，Ａ) 特開 昭59−16679（ＪＰ，Ａ) 特公 昭45−39931（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 9/173 B23K 9/09 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-1822071 (JP, A) JP-A-59-16680 (JP, A) JP-A-57-72772 (JP, A) JP-A-55-1982 122681 (JP, A) JP-A-59-16679 (JP, A) JP-B-45-39931 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) B23K 9/173 B23K 9 / 09
Claims (2)
ークを発生させるとともに、該消耗電極ワイヤの後方に
配置し且つ該消耗電極ワイヤに流れる電流とは逆方向の
電流が流れるように設けたフィラーワイヤを溶融池に挿
入させる消耗電極式アーク溶接方法であって、 前記フィラーワイヤには、このフィラーワイヤに抵抗熱
を発生させるためのパルス電流を、消耗電極ワイヤに流
れるパルス電流の位相とは逆の位相状態で供給させるこ
とを特徴とする消耗電極式アーク溶接方法。An arc is generated by supplying a pulse current to a consumable electrode wire, and is disposed behind the consumable electrode wire and provided so that a current in a direction opposite to a current flowing in the consumable electrode wire flows. A consumable electrode type arc welding method for inserting a filler wire into a molten pool, wherein the filler wire has a pulse current for generating resistive heat in the filler wire, and a phase of the pulse current flowing through the consumable electrode wire. A consumable electrode type arc welding method characterized by supplying in an opposite phase state.
と、該消耗電極ワイヤに並設されたフィラーワイヤとを
備えた消耗電極式アーク溶接機であって、 前記消耗電極ワイヤとフィラーワイヤとの両者には、互
いに電流方向が逆方向となるパルス電流を供給するため
の溶接電源が各々個別に設けられ、消耗電極ワイヤに供
給されるパルス電流とフィラーワイヤに供給されるパル
ス電流との位相が逆位相となるように構成されているこ
とを特徴とする消耗電極式アーク溶接機。2. A consumable electrode type arc welding machine comprising: a consumable electrode wire for generating an arc; and a filler wire juxtaposed to the consumable electrode wire, wherein the consumable electrode wire and the filler wire are connected to each other. In both, welding power supplies for supplying pulse currents whose current directions are opposite to each other are separately provided, and the phases of the pulse current supplied to the consumable electrode wire and the pulse current supplied to the filler wire are changed. A consumable electrode type arc welding machine characterized in that it is configured to be in the opposite phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05360792A JP3218341B2 (en) | 1992-03-12 | 1992-03-12 | Consumable electrode type arc welding method and its welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05360792A JP3218341B2 (en) | 1992-03-12 | 1992-03-12 | Consumable electrode type arc welding method and its welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05253671A JPH05253671A (en) | 1993-10-05 |
| JP3218341B2 true JP3218341B2 (en) | 2001-10-15 |
Family
ID=12947582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05360792A Expired - Fee Related JP3218341B2 (en) | 1992-03-12 | 1992-03-12 | Consumable electrode type arc welding method and its welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3218341B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002018086A1 (en) * | 2000-08-31 | 2002-03-07 | Air Water Inc. | Consumable electrode arc welding method and welder |
| US20150158105A1 (en) * | 2009-01-13 | 2015-06-11 | Lincoln Global, Inc. | Method and system to use combination filler wire feed and high intensity energy source for welding with controlled arcing frequency |
| US20150183045A1 (en) * | 2009-01-13 | 2015-07-02 | Lincoln Global, Inc. | Method and system to use combination filler wire feed and high intensity energy source for welding with controlled arcing frequency |
| US20150158106A1 (en) * | 2009-01-13 | 2015-06-11 | Lincoln Global, Inc. | Method and system to use combination filler wire feed and high intensity energy source for welding with controlled arcing frequency |
| US20150183044A1 (en) * | 2009-01-13 | 2015-07-02 | Lincoln Global, Inc. | Method and system to use combination filler wire feed and high intensity energy source for welding with controlled arcing frequency |
| US9193004B2 (en) * | 2012-11-13 | 2015-11-24 | Lincoln Global, Inc. | Voltage sensing for hot wire guns |
| US10035211B2 (en) * | 2013-03-15 | 2018-07-31 | Lincoln Global, Inc. | Tandem hot-wire systems |
| JP3208810U (en) * | 2014-02-24 | 2017-02-23 | リンカーン グローバル，インコーポレイテッド | System using a combination of filler wire feed and high strength energy source for welding with controlled arc frequency |
| CN113560755B (en) * | 2020-12-22 | 2022-07-29 | 哈尔滨工业大学（威海） | Magnetic field phase control type plasma MAG welding device and method |
-
1992
- 1992-03-12 JP JP05360792A patent/JP3218341B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05253671A (en) | 1993-10-05 |
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