JPH05261535A - Method for controlling consumable electrode ac arc welding machine - Google Patents
Method for controlling consumable electrode ac arc welding machineInfo
- Publication number
- JPH05261535A JPH05261535A JP5985892A JP5985892A JPH05261535A JP H05261535 A JPH05261535 A JP H05261535A JP 5985892 A JP5985892 A JP 5985892A JP 5985892 A JP5985892 A JP 5985892A JP H05261535 A JPH05261535 A JP H05261535A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- ratio
- time
- arc
- polarity
- 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 Control (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、消耗電極である溶接用
ワイヤと被溶接物である母材との間に交流電圧を印加
し、交流電圧の極性を任意に時分割して反転させアーク
溶接を行う消耗電極式交流アーク溶接機の制御方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies an AC voltage between a welding wire, which is a consumable electrode, and a base material, which is an object to be welded. The present invention relates to a control method of a consumable electrode type AC arc welding machine for welding.
【０００２】[0002]
【従来の技術】従来、自動送給される消耗電極である溶
接用ワイヤと被溶接物である母材との間に、アークを発
生させる消耗電極式アーク溶接法においては、通常、母
材側がマイナス、ワイヤ側がプラスになるＥＰ（棒プラ
ス）極性のみで行われているが、最近では、このＥＰ極
性と母材側がプラス、ワイヤ側がマイナスとなるＥＮ
（棒マイナス）極性とを任意に時分割して出力し、母材
への入熱量やワイヤ溶融量を制御して溶接ビード形状を
制御する消耗電極式交流アーク溶接法が実用化されつつ
ある。2. Description of the Related Art Conventionally, in a consumable electrode type arc welding method in which an arc is generated between a welding wire which is a consumable electrode that is automatically fed and a base material which is an object to be welded, usually the base material side is This is done only with the EP (rod plus) polarity that makes the wire negative and the wire side becomes positive, but recently, the EP polarity and the base material side are positive, and the wire side is negative EN.
A consumable electrode type AC arc welding method, in which (bar minus) polarity is arbitrarily time-divided and outputted, and the heat input amount to the base metal and the wire melting amount are controlled to control the welding bead shape, is being put to practical use.
【０００３】この消耗電極式交流アーク溶接では、溶接
アークが極性反転する毎に消弧し、再アーク発生をする
形態をとるため、再アーク発生を安定に行わせる必要が
ある。特に、溶接開始のアークスタート時およびその直
後は溶融状態が安定化していないので再アークが失敗す
る確率が高い。In this consumable electrode type AC arc welding, the arc is extinguished every time the polarity of the welding arc is reversed, and the arc is regenerated. Therefore, it is necessary to stably generate the rearc. In particular, since the molten state is not stabilized at the time of starting the arc and immediately after the start of welding, there is a high probability that the re-arc will fail.
【０００４】一方、溶融開始時は母材温度が上昇してい
ないため定常溶接時のＥＰ／ＥＮの比率のままでアーク
スタートするとアークスタート部のビード幅や溶け込み
が定常溶接部と異なり溶接欠陥となる恐れがある。On the other hand, since the base metal temperature does not rise at the start of melting, if the arc is started with the EP / EN ratio at the time of steady welding, the bead width and the penetration at the arc start portion are different from those of the steady welding portion and a welding defect occurs. There is a risk of becoming.
【０００５】以上２点の問題に対して、特公平3-49665
にてアークスタート時は溶け込みが深いＥＰ特性とし、
この後、定常時のＥＰ／ＥＮ比率に移行するアーク溶接
機によりアークスタート時の溶け込み不足の問題とアー
クスタート時の再アーク失敗の問題の双方に対して解決
策が提示された。Japanese Patent Publication No. 3-49665
At the time of arc start, it has an EP characteristic with deep melting,
After that, a solution was presented for both the problem of insufficient penetration at the time of arc start and the problem of re-arc failure at the time of arc start by the arc welder that shifts to the EP / EN ratio in the steady state.
【０００６】以下、特公平3-94665 に沿った制御につい
て説明する。図４は従来の消耗電極式アーク溶接機にお
けるアークスタート時の制御タイミング図である。図４
において、時刻ｔ0 で溶接開始の溶接起動信号ＴＳが溶
接機に入力されたとする。溶接機は特公平3-49665 の制
御方法によりＥＮ比率を０％近くにして無負荷電圧を出
力するとともに、ワイヤを母材に対してスローダウン速
度Ｆｓにて送給を開始する。ワイヤ先端が母材に接触し
て溶接アークが発生した時刻がｔ1 である。溶接機は出
力電流が「有」となったことを検出して、この時刻ｔ1
から時間経過とともに定常溶接時のＥＮ比率であるＥＮ
X に向かって順次ＥＮ比率を増加させ、時刻ｔ2 にて定
常溶接時のＥＮ比率であるＥＮX に到達する。このと
き、ワイヤ送給速度は時刻ｔ0 でスローダウン速度Ｆｓ
にて送給開始し、出力電流が「有」となったことを検出
した時刻ｔ1 で定常のワイヤ送給速度Ｆｘに切り換える
制御であった。The control according to Japanese Patent Publication No. 3-94665 will be described below. FIG. 4 is a control timing diagram at the time of arc start in the conventional consumable electrode type arc welding machine. Figure 4
At time t 0 , a welding start signal TS for starting welding is input to the welding machine. The welding machine outputs the no-load voltage with the EN ratio close to 0% by the control method of Japanese Patent Publication No. 3-49665, and starts feeding the wire to the base metal at the slowdown speed Fs. The time when the tip of the wire comes into contact with the base material and a welding arc occurs is t 1 . The welding machine detects that the output current has become “present”, and at this time t 1
Which is the ratio of EN during steady welding with the passage of time from
The EN ratio is gradually increased toward X, and reaches the EN ratio during steady welding EN X at time t 2 . At this time, the wire feeding speed is the slowdown speed Fs at time t 0.
In the control, the feeding is started and the wire feeding speed Fx is switched to the steady wire feeding speed Fx at time t 1 when the output current is detected to be “present”.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、この高
比率ＥＰアークスタート方法では、上記２点の問題の解
決にはなったもののアークスタート時のアーク長が定常
時に比して短いため、アークスタート時の多大なスパッ
タ発生やアーク不安定、溶け込み不足などの問題があっ
た。すなわち、図５に示すようにＥＮ比率に対する適正
なワイヤ送給速度はＥＮ比率毎に異なり、これを、図４
に示すように時刻ｔ1 から時刻ｔ2 の間に刻々とＥＮ比
率が変化しているのに、定常時のＥＮ比率ＥＮX のみに
対して適正なワイヤ送給速度ＦX に切り換えるだけで
は、適正なアーク長を維持できず、この結果、多大なス
パッタ発生やアーク不安定、溶け込み不足の原因となっ
ていた。この不具合を解決するためにコンデンサ、抵抗
などからなる遅延回路にてワイヤ送給速度を順次定常溶
接時の値に近づける方法も考えられるが、ＥＮ比率との
関連が無いため一般的ではなかった。However, in this high ratio EP arc start method, although the above two problems have been solved, the arc length at the arc start is shorter than that at the steady state. There were problems such as a large amount of spatter generation, arc instability, and insufficient penetration. That is, as shown in FIG. 5, the proper wire feeding speed with respect to the EN ratio differs depending on the EN ratio.
Although the EN ratio is changing every moment between time t 1 and time t 2 as shown in (4), if the wire feeding speed F X is switched to an appropriate wire feeding speed F X only for the EN ratio EN X in the steady state, The proper arc length could not be maintained, resulting in a large amount of spatter generation, arc instability, and insufficient penetration. In order to solve this problem, a method of gradually approaching the wire feeding speed to a value at the time of steady welding with a delay circuit composed of a capacitor, a resistor, etc. can be considered, but it is not general because it is not related to the EN ratio.
【０００８】本発明は上記従来の問題を解決するもの
で、アークスタート時の多大なスパッタ発生やアーク不
安定、溶け込み不足などの溶接欠陥を解消することがで
きる消耗電極式交流アーク溶接機の制御方法を提供する
ことを目的とするものである。The present invention solves the above-mentioned conventional problems, and controls a consumable electrode type AC arc welding machine capable of eliminating welding defects such as a large amount of spatter at the time of arc start, arc instability, and insufficient penetration. It is intended to provide a method.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明の消耗電極式交流アーク溶接機の制御方法は、
消耗電極である溶接用ワイヤと被溶接物である母材との
間に交流電圧を印加し、前記交流電圧の極性を時分割し
て反転させアーク溶接を行う消耗電極式交流アーク溶接
機の制御方法であって、溶接開始のアーク発生時は消耗
電極側がプラスとなる逆極性のみとし、アーク発生後、
順次定常溶接時の極性比率となるよう時間経過とともに
消耗電極側がマイナスとなる正極性の比率を増加させ、
かつ、前記時間経過と共に変化する極性比率に応じて前
記消耗電極の送給速度も定常溶接時の送給速度を目標値
として順次速度増加させるように制御するものである。In order to solve the above-mentioned problems, a control method for a consumable electrode type AC arc welding machine according to the present invention comprises:
Control of a consumable electrode type AC arc welding machine that performs arc welding by applying an AC voltage between a welding wire that is a consumable electrode and a base material that is a workpiece, and reverses the polarity of the AC voltage by time division. In the method, when the arc at the start of welding is generated, the consumable electrode side has only the opposite polarity, and after the arc occurs,
Increase the ratio of positive polarity where the consumable electrode side becomes negative over time so that the polarity ratio becomes steady during steady welding,
In addition, the feed rate of the consumable electrode is controlled so that the feed rate during steady welding is gradually increased with the feed rate during steady welding as a target value in accordance with the polarity ratio that changes with the passage of time.
【００１０】[0010]
【作用】上記構成により、溶接開始のアーク発生時は消
耗電極側がプラスとなる逆極性のみとし、アーク発生後
は、順次、定常溶接時の極性比率となるように時間経過
とともに消耗電極側がマイナスとなる正極性の比率を増
加させ、かつ時間経過とともに変化する極性比率に応じ
て消耗電極の送給速度も定常溶接時の送給速度を目標値
として順次速度増加させる制御とするので、円滑なアー
クスタートと円滑な定常溶接への移行が可能となり、ア
ークスタート時の多大なスパッタ発生や溶け込み不足な
どの溶接欠陥が防止されて安定な溶接開始となる。With the above structure, when the arc at the start of welding occurs, the consumable electrode side has a positive polarity only, and after the arc occurs, the consumable electrode side becomes negative with the passage of time so that the polarity ratio during steady welding is sequentially achieved. The ratio of the positive polarity is increased and the feed rate of the consumable electrode is gradually increased with the feed rate during steady welding as the target value according to the polarity rate that changes with the passage of time. Starting and a smooth transition to steady welding are possible, and welding defects such as a large amount of spatter at the start of arc and insufficient penetration are prevented, and stable welding starts.
【００１１】[0011]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図１は本発明の一実施例における消
耗電極式交流アーク溶接機の構成を示すブロック図であ
る。図１において、溶接電源入力端子１は１次インバー
タ部２に接続され、１次インバータ部２は溶接用トラン
ス３を介して、出力極性を制御する２次インバータ部４
に接続されている。この２次インバータ部４はリアクト
ル５を介して溶接用電源の一方の出力端子６ａに接続さ
れ、他方の出力端子６ｂは溶接電流検出器７を介して溶
接用トランス３に接続されている。この溶接用電源の一
方の出力端子６ａは通電用コンタクトチップ８、溶接用
ワイヤ９、溶接アーク10、さらに母材11を介して他方の
出力端子６ｂに接続され、消耗電極であるワイヤ９と被
溶接物である母材11との間に交流電圧を印加し、この交
流電圧の極性を時分割して反転させアーク溶接を行う。
このワイヤ９は母材11に対してワイヤ送給用モータ12に
より送給される構成である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a consumable electrode type AC arc welding machine in one embodiment of the present invention. In FIG. 1, a welding power source input terminal 1 is connected to a primary inverter unit 2, and the primary inverter unit 2 is a secondary inverter unit 4 that controls an output polarity via a welding transformer 3.
It is connected to the. The secondary inverter unit 4 is connected via a reactor 5 to one output terminal 6a of a welding power source, and the other output terminal 6b is connected to a welding transformer 3 via a welding current detector 7. One output terminal 6a of this welding power source is connected to the other output terminal 6b through a contact tip 8 for energization, a welding wire 9, a welding arc 10 and a base material 11, and is connected to the wire 9 which is a consumable electrode and a cover electrode. An AC voltage is applied to the base material 11 which is a welded product, and the polarity of this AC voltage is time-divided and inverted to perform arc welding.
The wire 9 is fed to the base material 11 by a wire feeding motor 12.
【００１２】一方、溶接開始の溶接起動信号ＴＳが入力
される演算制御部13はモータ駆動回路14を介してワイヤ
送給用モータ12に接続され、モータ駆動回路14を介して
ワイヤ送給用モータ12のワイヤ送給速度を制御する。ま
た、演算制御部13は２次インバータ制御部15を介して２
次インバータ部４に接続され、２次インバータ制御部15
を介して２次インバータ部４を制御する。さらに、演算
制御部13は１次インバータ制御部16を介して１次インバ
ータ部２に接続され、１次インバータ制御部16を介して
１次インバータ部２を制御する。さらに、溶接電流検出
器７は溶接電流検出部17を介して演算制御部13に接続さ
れ、溶接電流検出部17から演算制御部13に溶接電流検出
出力が出力される。さらには、演算制御部13は溶接電流
設定器18、溶接電圧設定器19およびＥＮ比率設定器20に
それぞれ接続されている。On the other hand, the operation control section 13 to which the welding start signal TS for starting welding is inputted is connected to the wire feeding motor 12 via the motor driving circuit 14, and the wire feeding motor via the motor driving circuit 14. Controls 12 wire feed rates. In addition, the arithmetic control unit 13 is operated via the secondary inverter control unit 15
Connected to the secondary inverter unit 4 and connected to the secondary inverter control unit 15
The secondary inverter unit 4 is controlled via. Further, the arithmetic control unit 13 is connected to the primary inverter unit 2 via the primary inverter control unit 16 and controls the primary inverter unit 2 via the primary inverter control unit 16. Further, the welding current detector 7 is connected to the arithmetic control unit 13 via the welding current detection unit 17, and the welding current detection output is output from the welding current detection unit 17 to the arithmetic control unit 13. Further, the arithmetic control unit 13 is connected to the welding current setting device 18, the welding voltage setting device 19 and the EN ratio setting device 20, respectively.
【００１３】上記構成により、以下、その動作を説明す
る。まず、溶接開始の溶接起動信号ＴＳが演算制御部13
に入力されると、演算制御部13は溶接電流検出部17から
出力電流が無いことを確認して、２次インバータ制御部
15にＥＮ比率設定器20の設定とは無関係にＥＮ比率０％
であることを指令するとともに、１次インバータ制御部
16に無負荷電圧を出力するように指令する。これと同時
に、溶接電流設定器18の設定とは無関係に円滑なアーク
スタートのためのスローダウンワイヤ送給速度ＦＳをモ
ータ駆動回路14に指令する。これにより、ワイヤ送給モ
ータ12がＦＳなるスローダウンワイヤ送給速度で回転す
る結果、ワイヤ９が母材11に向かって送給されてワイヤ
９が母材11に接触し、これにより溶接電流が流れて溶接
アーク10を発生させる。The operation of the above arrangement will be described below. First, the welding start signal TS for starting welding is calculated by the calculation control unit 13
Input to the secondary inverter control unit, the arithmetic control unit 13 confirms that there is no output current from the welding current detection unit 17.
15 EN ratio 0% regardless of the setting of EN ratio setting device 20
That the primary inverter control unit
Command 16 to output unloaded voltage. At the same time, regardless of the setting of the welding current setting device 18, the motor drive circuit 14 is instructed of the slow down wire feeding speed FS for smooth arc start. As a result, the wire feeding motor 12 rotates at the slow down wire feeding speed of FS, and as a result, the wire 9 is fed toward the base material 11 and the wire 9 comes into contact with the base material 11, which causes the welding current to flow. It flows to generate a welding arc 10.
【００１４】さらに、溶接アーク10が発生すると、溶接
電流検出器７を経由して溶接電流検出部17から溶接電流
「有」の情報が入力される。これにより、演算制御部13
は時計数を開始して順次ＥＮ比率をＥＮ比率設定器20の
設定値となるように２次インバータ制御部15に指令を出
力する。これと同時に、演算制御部13は時々刻々のＥＮ
比率を指示する情報により、図５に示すような、時々刻
々のＥＮ比率に最適なワイヤ送給速度をモータ駆動回路
14に指令する。Further, when the welding arc 10 is generated, the welding current "present" information is input from the welding current detector 17 via the welding current detector 7. As a result, the arithmetic control unit 13
Outputs a command to the secondary inverter control unit 15 so that the number of clocks is started and the EN ratio is sequentially set to the set value of the EN ratio setting unit 20. At the same time, the arithmetic and control unit 13 changes the EN
Based on the information indicating the ratio, as shown in FIG. 5, the wire feeding speed optimum for the momentary EN ratio is set to the motor drive circuit.
Command 14
【００１５】図２は図１の演算制御部13の構成を示すブ
ロック図である。図２において、演算制御部13には、演
算素子部13ａと、予めデータを書き込んだ読み出し専用
の記憶部13ｂと、タイマ部13ｃとが設けられている。こ
の記憶部13ｂには、各ＥＮ比率の場合、溶接電流に対し
て適正なワイヤ送給速度がデータとして予め記憶格納さ
れている。また、タイマ部13ｃは溶接起動信号ＴＳがオ
ンの時のみ計数可能状態となり、オフの時は計数値が０
にリセット溶接電流検出信号Ａ0 が、溶接出力電流
「有」の時のみ時計数値を増加して行くもの（タイマ部
13ｃの時計数増加のためクロック回路部などは省略して
いる）である。FIG. 2 is a block diagram showing the configuration of the arithmetic control unit 13 of FIG. In FIG. 2, the arithmetic control unit 13 is provided with an arithmetic element unit 13a, a read-only storage unit 13b in which data is written in advance, and a timer unit 13c. In this storage unit 13b, in the case of each EN ratio, an appropriate wire feeding speed for the welding current is stored in advance as data. In addition, the timer unit 13c is in a countable state only when the welding start signal TS is on, and the count value is 0 when it is off.
Reset welding current detection signal A 0 increases the clock value only when the welding output current is “present” (timer section
The clock circuit section and the like are omitted due to the increase in the number of clocks in 13c).
【００１６】アーク発生後、タイマ部13ｃは０から時計
数値を増加させて演算素子部13ａに時計数データＴｎを
供給する。演算素子部13ａはＴｎデータとＥＮ比率設定
器20からの入力ＥＮ％を次式のごとく計算してＥＮ比率
信号Ｃｓを２次インバータ制御部15に出力する。After the arc is generated, the timer section 13c increments the clock value from 0 and supplies the clock number data Tn to the arithmetic element section 13a. The arithmetic element unit 13a calculates Tn data and the input EN% from the EN ratio setting unit 20 according to the following equation, and outputs the EN ratio signal Cs to the secondary inverter control unit 15.
【００１７】 Ｃｓ＝Ｔｎ （Ｔｎ＜ＥＮ％の場合） Ｃｓ＝ＥＮ％ （Ｔｎ≧ＥＮ％の場合） 同時に、この計算結果Ｃｓと溶接電流設定器18からの値
により、演算素子部13ａは記憶部13ｃから適正なワイヤ
送給速度データを取り出し、信号Ｍとしてモータ駆動回
路部14に出力する。たとえば上式の結果、今、ＥＮ比率
が10％で溶接電流設定器18が100 Ａを指示している場
合、演算素子部13ａは記憶部13ｂ内の４．２ｍ／分のワ
イヤ送給速度データを取り出してＭ信号として出力す
る。Cs = Tn (in the case of Tn <EN%) Cs = EN% (in the case of Tn ≧ EN%) At the same time, the calculation element unit 13 a stores the storage unit in accordance with the calculation result Cs and the value from the welding current setter 18. Appropriate wire feeding speed data is taken out from 13c and outputted to the motor drive circuit section 14 as a signal M. For example, as a result of the above equation, when the EN ratio is 10% and the welding current setting device 18 is instructing 100 A, the computing element unit 13a displays the wire feed speed data of 4.2 m / min in the storage unit 13b. Is output and output as an M signal.
【００１８】さらに、消耗電極式交流アーク溶接機の制
御方法を図３の制御タイミング図を用いて説明すると、
時刻ｔ0 において溶接機に溶接開始の溶接起動信号が入
力されると、溶接機はＥＮ比率０％にて無負荷電圧を出
力する。同時にＦｓなるワイヤ送給速度にてワイヤ９を
母材11に向けて送給を開始する。ワイヤ９が母材11に接
触して溶接出力電流が流れると、溶接機はこれを検出し
て図５のａ点で示されるＥＮ比率０％の時に適正なＦ0
なるワイヤ送給速度に切り換える。この後、溶接出力の
ＥＮ比率を増加させて時刻ｔ2 にＥＮｘなるＥＮ比率に
到達する訳であるが、この際、溶接出力のＥＮ比率のみ
を変化させるのではなく、同時にワイヤ送給速度もその
時刻のＥＮ比率に適正なワイヤ送給速度に制御しながら
時刻ｔ2にＦｘに到達するように制御を行う。具体的に
は、図５において、アーク発生直後Ｆ0 なるワイヤ送給
速度のａ点から時刻経過とともにｂ点→ｃ点とワイヤ送
給速度を増加させて行き、時刻ｔ2 でｘ点に到達するよ
うに制御を行う。Further, the control method of the consumable electrode type AC arc welding machine will be described with reference to the control timing chart of FIG.
When a welding start signal for starting welding is input to the welder at time t 0 , the welder outputs a no-load voltage with an EN ratio of 0%. At the same time, the wire 9 is fed toward the base material 11 at the wire feeding speed of Fs. The wire 9 is in contact with the base material 11 flows welding output current, welder detects this proper F 0 when the EN ratio 0% represented by the point a of FIG. 5
Switch to the wire feeding speed. After that, the EN ratio of the welding output is increased to reach the EN ratio of ENx at time t 2 , but at this time, not only the EN ratio of the welding output is changed, but also the wire feeding speed is changed. Control is performed so that Fx is reached at time t 2 while controlling the wire feeding speed to be appropriate for the EN ratio at that time. Specifically, in FIG. 5, the wire feeding speed is increased from the point a of the wire feeding speed F 0 immediately after the arc occurrence to the point b → c with the lapse of time, and reaches the point x at the time t 2. Control to do so.
【００１９】[0019]
【発明の効果】以上のように本発明によれば、アーク発
生時はＥＰ極性のみとし、順次定常溶接時のＥＮ比率に
移行して行くとともに、ワイヤ送給速度も時々刻々のＥ
Ｎ比率に適正な値となるため、円滑なアークスタートと
円滑な定常溶接への移行が可能となり、アークスタート
時の多大なスパッタ発生や溶け込み不足などの溶接欠陥
を防止でき、安定な溶接開始を実現することができるも
のである。As described above, according to the present invention, when the arc is generated, only the EP polarity is set, and the EN ratio at the time of steady welding is sequentially shifted, and the wire feeding speed is changed every moment.
Since the N ratio becomes an appropriate value, it is possible to smoothly start the arc and transition to smooth steady welding, and it is possible to prevent welding defects such as large spatter generation and insufficient penetration at the arc start, and stable welding start. It is something that can be realized.
【図１】本発明の一実施例における消耗電極式交流アー
ク溶接機の構成を示すブロック図である。FIG. 1 is a block diagram showing a configuration of a consumable electrode type AC arc welding machine according to an embodiment of the present invention.
【図２】図１の演算制御部13の構成を示すブロック図で
ある。FIG. 2 is a block diagram showing a configuration of a calculation control unit 13 in FIG.
【図３】図１の消耗電極式交流アーク溶接機によるアー
クスタート時の制御タイミング図である。FIG. 3 is a control timing diagram at the time of arc start by the consumable electrode type AC arc welding machine of FIG. 1.
【図４】従来の消耗電極式アーク溶接機におけるアーク
スタート時の制御タイミング図である。FIG. 4 is a control timing chart at the time of arc start in the conventional consumable electrode type arc welding machine.
【図５】ＥＮ比率を変化させた場合の適正なワイヤ送給
速度と出力電流の関係を示す図である。FIG. 5 is a diagram showing a relationship between an appropriate wire feeding speed and an output current when the EN ratio is changed.
２ １次インバータ部 ４ ２次インバータ部 ７ 溶接電流検出器 ９ ワイヤ 11 母材 12 ワイヤ送給用モータ 13 演算制御部 13ａ 演算素子部 13ｂ 記憶部 13ｃ タイマ部 14 モータ駆動回路 15 ２次インバータ制御部 16 １次インバータ制御部 17 溶接電流検出部 18 溶接電流設定器 19 溶接電圧設定器 20 ＥＮ比率設定器 2 Primary inverter section 4 Secondary inverter section 7 Welding current detector 9 Wire 11 Base metal 12 Wire feeding motor 13 Calculation control section 13a Calculation element section 13b Storage section 13c Timer section 14 Motor drive circuit 15 Secondary inverter control section 16 Primary inverter controller 17 Welding current detector 18 Welding current setting device 19 Welding voltage setting device 20 EN Ratio setting device
Claims (1)
ある母材との間に交流電圧を印加し、前記交流電圧の極
性を時分割して反転させアーク溶接を行う消耗電極式交
流アーク溶接機の制御方法であって、溶接開始のアーク
発生時は消耗電極側がプラスとなる逆極性のみとし、ア
ーク発生後、順次定常溶接時の極性比率となるように時
間経過とともに消耗電極側がマイナスとなる正極性の比
率を増加させ、かつ、前記時間経過とともに変化する極
性比率に応じて前記消耗電極の送給速度も定常溶接時の
送給速度を目標値として順次速度増加させるように制御
する消耗電極式交流アーク溶接機の制御方法。1. A consumable electrode type AC for performing arc welding by applying an AC voltage between a welding wire that is a consumable electrode and a base material that is a workpiece, and inverting the polarity of the AC voltage by time division. This is a control method for an arc welder, in which the consumable electrode side has a positive polarity when an arc occurs at the start of welding, and the consumable electrode side becomes negative with the passage of time so that the polarity ratio becomes constant during steady welding after the arc occurs. The ratio of the positive polarity is increased, and the feed rate of the consumable electrode is controlled to be sequentially increased with the feed rate during steady welding as a target value according to the polarity rate that changes with the passage of time. Control method for consumable electrode type AC arc welding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04059858A JP3110135B2 (en) | 1992-03-17 | 1992-03-17 | Control method of consumable electrode type AC arc welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04059858A JP3110135B2 (en) | 1992-03-17 | 1992-03-17 | Control method of consumable electrode type AC arc welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05261535A true JPH05261535A (en) | 1993-10-12 |
| JP3110135B2 JP3110135B2 (en) | 2000-11-20 |
Family
ID=13125304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04059858A Expired - Fee Related JP3110135B2 (en) | 1992-03-17 | 1992-03-17 | Control method of consumable electrode type AC arc welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3110135B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062668A (en) * | 2001-08-23 | 2003-03-05 | Daihen Corp | Control method for feeding in a/c gas shielded arc welding |
| EP1681123A2 (en) | 2005-01-13 | 2006-07-19 | Daihen Corporation | Arc start control method for AC arc welding |
| JP2010264487A (en) * | 2009-05-15 | 2010-11-25 | Yaskawa Electric Corp | Arc welding method |
| EP2269758A1 (en) | 2009-07-03 | 2011-01-05 | EWM Hightec Welding GmbH | DC Arc welding method and welding device |
| CN102448652A (en) * | 2010-03-01 | 2012-05-09 | 松下电器产业株式会社 | Alternating-current arc welding device |
| JP2015533347A (en) * | 2012-11-07 | 2015-11-24 | リンカーン グローバル，インコーポレイテッド | Control method of arc welding system using arc welding power source and control of heat input during welding operation |
| CN114929420A (en) * | 2020-01-23 | 2022-08-19 | 松下知识产权经营株式会社 | Welding device |
-
1992
- 1992-03-17 JP JP04059858A patent/JP3110135B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062668A (en) * | 2001-08-23 | 2003-03-05 | Daihen Corp | Control method for feeding in a/c gas shielded arc welding |
| JP4673519B2 (en) * | 2001-08-23 | 2011-04-20 | 株式会社ダイヘン | Feed control method for AC gas shielded arc welding |
| JP4652825B2 (en) * | 2005-01-13 | 2011-03-16 | 株式会社ダイヘン | Arc start control method for AC arc welding |
| EP1681123A2 (en) | 2005-01-13 | 2006-07-19 | Daihen Corporation | Arc start control method for AC arc welding |
| JP2006192463A (en) * | 2005-01-13 | 2006-07-27 | Daihen Corp | Arc start-control method of ac arc welding |
| JP2010264487A (en) * | 2009-05-15 | 2010-11-25 | Yaskawa Electric Corp | Arc welding method |
| US8536487B2 (en) | 2009-05-15 | 2013-09-17 | Kabushiki Kaisha Yaskawa Denki | Arc welding method |
| EP2269758A1 (en) | 2009-07-03 | 2011-01-05 | EWM Hightec Welding GmbH | DC Arc welding method and welding device |
| CN102448652A (en) * | 2010-03-01 | 2012-05-09 | 松下电器产业株式会社 | Alternating-current arc welding device |
| JP2015533347A (en) * | 2012-11-07 | 2015-11-24 | リンカーン グローバル，インコーポレイテッド | Control method of arc welding system using arc welding power source and control of heat input during welding operation |
| US10315268B2 (en) | 2012-11-07 | 2019-06-11 | Lincoln Global, Inc. | Method and system to control heat input in a welding operation |
| CN114929420A (en) * | 2020-01-23 | 2022-08-19 | 松下知识产权经营株式会社 | Welding device |
| CN114929420B (en) * | 2020-01-23 | 2024-04-05 | 松下知识产权经营株式会社 | Welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3110135B2 (en) | 2000-11-20 |
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