WO2016125540A1 - Procédé de commande de soudage à l'arc - Google Patents

Procédé de commande de soudage à l'arc Download PDF

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Publication number
WO2016125540A1
WO2016125540A1 PCT/JP2016/050683 JP2016050683W WO2016125540A1 WO 2016125540 A1 WO2016125540 A1 WO 2016125540A1 JP 2016050683 W JP2016050683 W JP 2016050683W WO 2016125540 A1 WO2016125540 A1 WO 2016125540A1
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Prior art keywords
period
feed
circuit
welding
reverse
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PCT/JP2016/050683
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English (en)
Japanese (ja)
Inventor
章博 井手
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株式会社ダイヘン
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Application filed by 株式会社ダイヘン filed Critical 株式会社ダイヘン
Priority to CN201680003498.4A priority Critical patent/CN107107241B/zh
Priority to JP2016573250A priority patent/JPWO2016125540A1/ja
Publication of WO2016125540A1 publication Critical patent/WO2016125540A1/fr

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    • 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
    • B23K9/073—Stabilising the arc
    • 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
    • B23K9/095—Monitoring or automatic control of welding parameters
    • 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting

Definitions

  • the present invention relates to an arc welding control method for performing welding by generating a short circuit period and an arc period by performing forward / reverse feed control for alternately switching a feeding speed of a welding wire between a forward feed period and a reverse feed period. It is.
  • a welding wire as a consumable electrode is fed at a constant speed, and an arc is generated between the welding wire and the base material to perform welding.
  • the welding wire and the base material are often in a welding state in which a short circuit period and an arc period are alternately repeated.
  • the average value of the feeding speed according to the welding current set value is used, and the frequency and amplitude of the forward and reverse feeding of the welding wire are values according to the welding current set value.
  • welding is performed by performing forward / reverse feed control in which the feed speed of the welding wire is switched alternately between a forward feed period and a reverse feed period at a predetermined frequency.
  • forward / reverse feed control when the droplet transfer mode is the short-circuit transfer mode, a short circuit occurs in synchronization with the normal feed period, and an arc is generated in synchronization with the reverse feed period. It becomes a state.
  • the droplet transfer form becomes a globule transfer form
  • a large lifting force acts on the droplet from the arc, so that the occurrence of a short circuit is inhibited and a short circuit occurs irregularly.
  • the number of short circuits per second is less than 40 times.
  • the frequency of the forward / reverse feed control is also set to less than 40 Hz.
  • an asynchronous state in which a short-circuit does not occur in synchronization with the normal feeding period is occasionally caused.
  • the conventional technique has a problem that an unstable welding state in which a large amount of spatter is generated may occur.
  • an object of the present invention is to provide an arc welding control method in which a good welding state is obtained in a globule transition mode in arc welding by forward / reverse feed control.
  • the arc welding control method of the present invention includes: In the arc welding control method of performing welding by generating a short circuit period and an arc period by performing forward / reverse feed control for alternately switching the feeding speed of the welding wire between the forward feed period and the reverse feed period,
  • the waveform parameter of the feed rate is set so that the frequency for switching the feed rate between the forward feed period and the reverse feed period is in the range of 70 to 120 Hz. To It is characterized by that.
  • the shielding gas is carbon dioxide
  • the welding wire is made of iron
  • the welding wire has a diameter of 1.2 mm
  • the globule transition form has an average welding current.
  • the arc welding control method of the present invention calculates a synchronous short-circuit ratio during the forward / reverse feed control, automatically adjusts the waveform parameter so that the synchronous short-circuit ratio becomes a maximum value, and the synchronous short-circuit ratio is It is a ratio of the number of short circuits that occurred during the normal feeding period to the number of times of the normal feeding period in a unit time. It is characterized by that.
  • the arc welding control method of the present invention starts transition to the reverse feed period when the short-circuit period occurs during the forward feed period, and starts the transition to the forward feed period when the arc period occurs during the reverse feed period. Start the migration, It is characterized by that.
  • a substantially complete synchronization state in which the short circuit period and the arc period are generated in synchronization with the frequency of the feeding speed is obtained. For this reason, it is possible to perform high-quality welding with a small bead appearance and a small amount of spatter generation.
  • the feed speed is set so that the frequency at which the feed speed is switched between the forward feed period and the reverse feed period is in the range of 70 to 120 Hz.
  • the waveform parameter is a frequency. Therefore, in the invention of Embodiment 1, the frequency setting signal Sfr is set to the above frequency range.
  • FIG. 1 is a block diagram of a welding power source for carrying out the arc welding control method according to Embodiment 1 of the present invention. Hereinafter, each block will be described with reference to FIG.
  • the power supply main circuit PM receives a commercial power supply (not shown) such as a three-phase 200V, performs output control by inverter control or the like according to a drive signal Dv described later, and outputs an output voltage E.
  • a commercial power supply such as a three-phase 200V
  • the power supply main circuit PM is driven by a primary rectifier that rectifies commercial power, a smoothing capacitor that smoothes the rectified direct current, and the drive signal Dv that converts the smoothed direct current to high-frequency alternating current.
  • An inverter circuit a high-frequency transformer that steps down the high-frequency alternating current to a voltage value suitable for welding, and a secondary rectifier that rectifies the stepped-down high-frequency alternating current into direct current.
  • the reactor WL smoothes the output voltage E described above.
  • the inductance value of the reactor WL is, for example, 200 ⁇ H.
  • the feed motor WM receives a feed control signal Fc, which will be described later, and feeds the welding wire 1 at a feed speed Fw by periodically repeating forward feed and reverse feed.
  • a motor with fast transient response is used as the feed motor WM.
  • the feeding motor WM may be installed near the tip of the welding torch 4. In some cases, two feed motors WM are used to form a push-pull feed system.
  • the welding wire 1 is fed through the welding torch 4 by the rotation of the feeding roll 5 coupled to the feeding motor WM, and an arc 3 is generated between the base metal 2 and the welding wire 1.
  • a welding voltage Vw is applied between the power feed tip (not shown) in the welding torch 4 and the base material 2, and a welding current Iw is conducted.
  • the average feed speed setting circuit FAR outputs a predetermined average feed speed setting signal Far.
  • the frequency setting circuit SFR outputs a predetermined frequency setting signal Sfr.
  • the amplitude setting circuit WFR outputs a predetermined amplitude setting signal Wfr.
  • the feed speed setting circuit FR receives the average feed speed setting signal Far, the frequency setting signal Sfr, and the amplitude setting signal Wfr, and receives the amplitude Wf determined by the amplitude setting signal Wfr and the inverse of the frequency setting signal Sfr.
  • a feed speed setting signal Fr having a waveform obtained by shifting a predetermined trapezoidal wave changing to a positive / negative symmetrical shape with a period Tf determined by the period set value to the forward feed side by the value of the average feed speed setting signal Far is output. To do.
  • the feed speed setting signal Fr will be described in detail with reference to FIG.
  • the feed control circuit FC receives the feed speed setting signal Fr and receives a feed control signal Fc for feeding the welding wire 1 at a feed speed Fw corresponding to the value of the feed speed setting signal Fr. It outputs to said feed motor WM.
  • the output voltage setting circuit ER outputs a predetermined output voltage setting signal Er.
  • the output voltage detection circuit ED detects and smoothes the output voltage E and outputs an output voltage detection signal Ed.
  • the voltage error amplification circuit EV receives the output voltage setting signal Er and the output voltage detection signal Ed, and amplifies an error between the output voltage setting signal Er (+) and the output voltage detection signal Ed ( ⁇ ).
  • the voltage error amplification signal Ev is output.
  • the drive circuit DV receives the voltage error amplification signal Ev, performs PWM modulation control based on the voltage error amplification signal Ev, and outputs a drive signal Dv for driving the inverter circuit in the power supply main circuit PM. To do.
  • FIG. 2 is a timing chart of each signal in the welding power source of FIG. 1, showing the arc welding control method according to the first embodiment of the present invention.
  • FIG. 4A shows the time change of the feeding speed Fw
  • FIG. 3B shows the time change of the welding current Iw
  • FIG. 4C shows the time change of the welding voltage Vw.
  • the feed speed Fw shown in FIG. 6A is controlled to the value of the feed speed setting signal Fr output from the feed speed setting circuit FR of FIG.
  • the waveform is shifted to the forward feed side by the value of the feed speed setting signal Far. For this reason, as shown in FIG.
  • the feed speed Fw has an amplitude Wf that is symmetrical in the vertical direction with the average feed speed Fa indicated by a broken line determined by the average feed speed setting signal Far as a reference line. It becomes a trapezoidal wave-shaped feeding speed pattern determined in advance with the period Tf. That is, the amplitude above the reference line and the amplitude below the reference line have the same value, and the period above and below the reference line have the same value.
  • the reverse feed period from time t1 to t5 is a predetermined reverse feed acceleration period and reverse feed peak, respectively.
  • Period, reverse feed peak value and reverse feed deceleration period, and the forward feed period from time t5 to t9 is formed from a predetermined forward feed acceleration period, forward feed peak period, forward feed peak value and forward feed deceleration period, respectively.
  • the feed speed Fw enters the reverse feed acceleration period from time t1 to t2, and accelerates from 0 to the reverse feed peak value. During this period, the short-circuit state continues.
  • the feed speed Fw enters the reverse peak period from time t2 to t4 and becomes the reverse peak value described above.
  • an arc is generated by the pinch force generated by reverse feeding and energization of the welding current Iw.
  • the welding voltage Vw suddenly increases to an arc voltage value of several tens of volts as shown in FIG. 5C, and the welding current Iw is set to the arc period thereafter, as shown in FIG. The inside gradually decreases.
  • the feed speed Fw enters the forward feed acceleration period from time t5 to t6, and accelerates from 0 to the forward feed peak value. During this period, the arc period remains.
  • a numerical example of the trapezoidal wave of the feeding speed Fw is shown below.
  • amplitude Wf 60 m / min
  • average feed speed Fa 5 m / min
  • each half period of slope 1.2 ms
  • peak period 2.6 ms
  • peak value 30 m
  • the average welding current is about 250A.
  • Each waveform parameter in this case is as follows.
  • FIG. 3 is a diagram showing an appropriate range of the frequency Sf of the feeding speed Fw when arc welding is performed in the globule transition mode.
  • the horizontal axis indicates the frequency Sf [Hz]
  • the vertical axis indicates the synchronous short circuit ratio Rd [%].
  • the synchronous short-circuit ratio Rd is a ratio of the number of short-circuits occurring during the normal feeding period to the number of normal feeding periods within a unit time.
  • Rd 100%, a short circuit has occurred during all the normal feeding periods.
  • Rd 90%, there is an asynchronous state where no short circuit occurs during the normal feed period.
  • the unit time is set to 5 seconds, for example.
  • the welding conditions in the figure are when carbon dioxide gas is used for the shielding gas and a mild steel wire with a diameter of 1.2 mm is used for the welding wire. Under this welding condition, an average welding current value is 200 A or more and a globule transition mode is obtained. If the material of the welding wire is not limited to mild steel but iron, the state in which the average welding current value is 200 A or more is the globule transition mode.
  • the synchronous short-circuit ratio Rd > 99%, and a substantially complete synchronous state in which a short-circuit period and an arc period occur for each cycle of the feeding speed Fw. For this reason, in globule transition welding, high-quality welding with a beautiful bead appearance with less spatter generation can be performed.
  • the frequency Sf is outside this range, many asynchronous short circuits are generated, and the welding state is likely to fall into an unstable state, so that the amount of spatter is increased and the bead appearance is also deteriorated.
  • the appropriate range of the frequency Sf of the feeding speed Fw is in the range of 70 to 120 Hz, and preferably in the range of 80 to 110 Hz.
  • the frequency Sf When the frequency Sf is lower than the above-mentioned appropriate range, the arc period becomes long, the droplets become excessive, and the lifting force acting on the droplets is strong, so that the occurrence of short circuits is hindered and many asynchronous short circuits occur. .
  • the frequency Sf is higher than the above appropriate range, the arc period becomes short, the droplets become excessive, and an asynchronous short circuit is likely to occur.
  • the frequency Sf is in an appropriate range, the droplet formed during the arc period has an appropriate size, and a synchronous short circuit occurs.
  • the appropriate range of the frequency Sf is about 2 to 3 times less than 40 Hz in the prior art.
  • the frequency of the feed rate is set in the range of 70 to 120 Hz.
  • a substantially complete synchronization state in which the short circuit period and the arc period occur in synchronization with the frequency is obtained. For this reason, it is possible to perform high-quality welding with a small bead appearance and a small amount of spatter generation.
  • Embodiment 2 calculates the synchronous short-circuit ratio Rd during forward / reverse feed control, and automatically adjusts the frequency of the feed speed so that the synchronous short-circuit ratio Rd becomes the maximum value.
  • FIG. 4 is a block diagram of a welding power source for carrying out the arc welding control method according to the second embodiment.
  • This figure corresponds to FIG. 1 described above, and the same reference numerals are given to the same blocks, and description thereof will not be repeated.
  • This figure is obtained by adding a voltage detection circuit VD, a short circuit determination circuit SD, and a synchronous short circuit ratio calculation circuit RD to FIG. 1 and replacing the frequency setting circuit SFR of FIG. 1 with a second frequency setting circuit SFR2.
  • VD voltage detection circuit
  • SD short circuit
  • RD synchronous short circuit ratio calculation circuit
  • the voltage detection circuit VD detects the welding voltage Vw and outputs a voltage detection signal Vd.
  • the short circuit determination circuit SD receives the voltage detection signal Vd as described above, and when this value is less than the short circuit determination value (about 10 V), it determines that it is a short circuit period and becomes a high level, and when it is above, it is an arc period. And a short circuit determination signal Sd that is at a low level is output.
  • the synchronous short-circuit ratio calculation circuit RD receives the feed speed setting signal Fr and the short-circuit determination signal Sd as input, and counts the number Ns of normal feed periods in a unit time from the feed speed setting signal Fr, and at the same time, The number Nd of times that the short circuit determination signal Sd changes from the Low level to the High level (short circuit) during the transmission period is counted, and (Nd / Ns) ⁇ 100 is calculated and output as the synchronous short circuit ratio signal Rd.
  • the second frequency setting circuit SFR2 outputs a frequency setting signal Sfr changed within a predetermined range, compares the synchronous short circuit ratio signal Rd for each changed frequency setting signal Sfr, and after the comparison, the synchronous short circuit ratio signal Rd is The frequency setting signal Sfr having the maximum value is output.
  • the predetermined range is the appropriate range of 70 to 120 Hz described above with reference to FIG.
  • the value of the frequency setting signal Sfr is changed from 70 Hz to 120 Hz in units of 5 Hz and output.
  • the stored value of the synchronous short-circuit ratio signal Rd is compared, and the frequency setting signal Sfr having the maximum value is fixed and output.
  • the timing chart of each signal in the welding power source in FIG. 4 showing the arc welding control method according to the second embodiment of the present invention is the same as that in FIG. 2 described above. However, the point that the frequency Sf of the feeding speed Fw is automatically adjusted is different.
  • the synchronous short-circuit ratio during the forward / reverse feed control is calculated, and the frequency is automatically adjusted so that the synchronous short-circuit ratio becomes the maximum value. It is the ratio of the number of short circuits that occurred during the normal feed period to the number of feed periods.
  • the shift to the reverse feed period is started when the short-circuit period is reached during the forward feed period, and the shift to the forward feed period is started when the arc period is reached during the reverse feed period.
  • the waveform parameter is at least one of a forward feed acceleration period, a forward feed deceleration period, a reverse feed acceleration period, a reverse feed deceleration period, a forward feed peak value, or a reverse feed peak value.
  • the above waveform parameters are adjusted so that the average value of the frequency of the feeding speed falls within the desired range. That is, in the invention of the third embodiment, since the frequency of the feeding speed is not constant, the waveform parameter is adjusted so that the average value falls within the desired range.
  • FIG. 5 is a block diagram of a welding power source for carrying out the arc welding control method according to Embodiment 3 of the present invention.
  • This figure corresponds to FIG. 1 described above, and the same reference numerals are given to the same blocks, and the description thereof will not be repeated.
  • the average feed speed setting circuit FAR, frequency setting circuit SFR and amplitude setting circuit WFR of FIG. 1 are deleted.
  • forward feed acceleration period setting circuit TSUR, forward feed deceleration period setting circuit TSDR, reverse feed acceleration period setting circuit TRUR, reverse feed deceleration period setting circuit TRDR, forward feed amplitude setting circuit WSR, reverse feed amplitude setting circuit WRR, voltage detection A circuit VD and a short circuit determination circuit SD are added.
  • the feed speed setting circuit FR of FIG. 1 is replaced with a second feed speed setting circuit FR2.
  • the forward feed acceleration period setting circuit TSUR outputs a predetermined forward feed acceleration period setting signal Tsur.
  • the forward feed deceleration period setting circuit TSDR outputs a predetermined forward feed deceleration period setting signal Tsdr.
  • the reverse acceleration period setting circuit TRUR outputs a predetermined reverse acceleration period setting signal True.
  • the reverse feed deceleration period setting circuit TRDR outputs a predetermined reverse feed deceleration period setting signal Trdr.
  • the forward feed amplitude setting circuit WSR outputs a predetermined forward feed amplitude setting signal Wsr.
  • the reverse feed amplitude setting circuit WRR outputs a predetermined reverse feed amplitude setting signal Wrr.
  • the voltage detection circuit VD detects the welding voltage Vw and outputs a voltage detection signal Vd.
  • the short circuit determination circuit SD determines that the short circuit is in the short circuit period and becomes High level, and when the voltage detection signal Vd is equal to or higher than the short circuit determination value.
  • a short circuit determination signal Sd which is determined to be in the arc period and becomes Low level is output.
  • the second feed speed setting circuit FR2 includes the forward feed acceleration period setting signal Tsur, the forward feed deceleration period setting signal Tsdr, the reverse feed acceleration period setting signal True, the reverse feed deceleration period setting signal Trdr, The forward feed amplitude setting signal Wsr, the reverse feed amplitude setting signal Wrr and the short circuit determination signal Sd are input, and a feed speed pattern generated by the following processing is output as the feed speed setting signal Fr.
  • the feed speed setting signal Fr is 0 or more, it is a forward feed period, and when it is less than 0, it is a reverse feed period.
  • a feed speed setting signal Fr that linearly decelerates to 0 is output. 4) Subsequently, during the reverse feed acceleration period Tru determined by the reverse feed acceleration period setting signal Tru, the feed speed setting for linearly accelerating from 0 to the negative reverse feed peak value Wrp determined by the reverse feed amplitude setting signal Wrr. The signal Fr is output. 5) Subsequently, during the reverse feed peak period Trp, the feed speed setting signal Fr that maintains the reverse feed peak value Wrp is output.
  • FIG. 6 is a timing chart of each signal in the welding power source of FIG. 5 showing the arc welding control method according to the third embodiment of the present invention.
  • FIG. 4A shows the time change of the feeding speed Fw
  • FIG. 4B shows the time change of the welding current Iw
  • FIG. 4C shows the time change of the welding voltage Vw
  • FIG. ) Shows a time change of the short-circuit determination signal Sd.
  • the feed speed Fw shown in FIG. 5A is controlled to the value of the feed speed setting signal Fr output from the second feed speed setting circuit FR2 in FIG.
  • the feed speed setting signal Fr is determined by the forward feed acceleration period Tsu determined by the forward feed acceleration period setting signal Tsur in FIG. 5, the forward feed peak period Tsp that continues until a short circuit occurs, and the forward feed deceleration period setting signal Tsdr in FIG.
  • the forward feed deceleration period Tsd determined, the reverse feed acceleration period Tru determined by the reverse feed acceleration period setting signal Tru in FIG. 5, the reverse feed peak period Trp that continues until an arc is generated, and the reverse feed deceleration period setting signal Trdr in FIG. It is formed from the reverse feed deceleration period Trd.
  • the forward feed peak value Wsp is determined by the forward feed amplitude setting signal Wsr in FIG. 5, and the reverse feed peak value Wrp is determined by the reverse feed amplitude setting signal Wrr in FIG.
  • the feed speed setting signal Fr has a feed pattern that changes in a positive and negative trapezoidal wave shape.
  • the feed speed Fw enters a predetermined reverse feed acceleration period Tru at times t1 to t2, and accelerates from 0 to the reverse feed peak value Wrp. During this period, the short circuit period continues.
  • the short circuit determination signal Sd changes to the low level (arc period).
  • a transition is made to a predetermined reverse feed deceleration period Trd at times t3 to t4, and the feed speed Fw is reduced from the reverse feed peak value Wrp to 0 as shown in FIG. .
  • the welding voltage Vw rapidly increases to an arc voltage value of several tens of volts as shown in FIG. 3C, and the welding current Iw gradually decreases during the arc period as shown in FIG.
  • the short circuit determination signal Sd changes to a high level (short circuit period) as shown in FIG.
  • a transition is made to a predetermined forward feed deceleration period Tsd between times t6 and t7, and the feed speed Fw is reduced from the forward feed peak value Wsp to 0 as shown in FIG. .
  • the welding voltage Vw rapidly decreases to a short-circuit voltage value of several V as shown in FIG. 5C, and the welding current Iw gradually increases during the short-circuit period as shown in FIG.
  • the forward peak period Tsp and the reverse peak period Trp are not constant values because the period ends in response to a short circuit or arc occurrence. For this reason, the cycle of the feeding speed Fw cannot be set directly to a predetermined value.
  • the average value of the forward feed peak period Tsp and the average value of the reverse feed peak period Trp per unit time are substantially constant values. Accordingly, at least one of the forward feed acceleration period Tsu, the forward feed deceleration period Tsd, the reverse feed acceleration period Tru, the reverse feed deceleration period Trd, the forward feed peak value Wsp, or the reverse feed peak value Wrp, which is a waveform parameter of the feed speed Fw.
  • the average value of the cycles of the feeding speed Fw per unit time can be set within a predetermined range. That is, in the third embodiment, when the droplet transfer mode is the globule transfer mode, the forward feed acceleration period Tsu, the forward feed deceleration period Tsd, the reverse feed acceleration period Tru, and the reverse feed are the waveform parameters of the feed speed. By changing at least one of the deceleration period Trd, the forward feed peak value Wsp, or the reverse feed peak value Wrp, the average value of the cycle of the feed speed Fw per unit time can be set within an appropriate range. In the third embodiment, the horizontal axis of FIG. 3 indicates the average value of the frequency per unit time.
  • the synchronous short-circuit ratio Rd on the vertical axis indicates the ratio at which a short-circuit has occurred before the forward feed peak period Tsp reaches a predetermined forward feed reference value. This is because the state in which the forward feed peak period Tsp exceeds the forward feed reference value and a short circuit occurs does not provide a good synchronization state between the feed speed and the arc state. Therefore, in the third embodiment, when the droplet transfer state is the globule transfer mode, the waveform parameter of the feeding speed is adjusted, and the average value of the frequency per unit time falls within the appropriate range shown in FIG. You can do that.
  • the above-mentioned normal feed reference value is 7 ms, for example.
  • the shift to the reverse feed period starts when the short-circuit period occurs during the forward feed period, and the shift to the forward feed period starts when the arc period occurs during the reverse feed period. Also in this case, the same effect as in the first embodiment can be obtained.
  • the feeding speed changes in a trapezoidal wave shape, but the same applies when the feeding speed changes in a sine wave shape, a triangular wave shape, or the like.

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  • Arc Welding Control (AREA)

Abstract

L'invention concerne un procédé de commande de soudage à l'arc qui réalise le soudage en effectuant une commande d'avance en avant-arrière qui commute en alternance une vitesse d'avance (Fw) entre des périodes d'avance en avant et des périodes d'avance en arrière et génère des périodes courtes et des périodes d'arc. Lorsqu'un mode de transfert de métal est un mode de transfert globulaire, le rapport court synchronisé pendant la commande d'avance en avant-arrière est calculé et la fréquence (Sf) de la vitesse d'avance (Fw) est réglée automatiquement dans une plage de 70 à 120 Hz, de sorte que ce rapport court synchronisé soit une valeur maximale. Le rapport court synchronisé est le rapport entre le nombre de périodes courtes générées pendant les périodes d'avance en avant et le nombre de périodes d'avance en avant pendant une unité de temps.
PCT/JP2016/050683 2015-02-02 2016-01-12 Procédé de commande de soudage à l'arc WO2016125540A1 (fr)

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JP5141826B2 (ja) * 2009-08-28 2013-02-13 パナソニック株式会社 アーク溶接方法およびアーク溶接装置
JP2012006020A (ja) * 2010-06-22 2012-01-12 Daihen Corp アーク溶接制御方法

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KR20170086490A (ko) * 2014-11-18 2017-07-26 가부시키가이샤 다이헨 아크 용접 제어 방법
KR102245586B1 (ko) 2014-11-18 2021-04-27 가부시키가이샤 다이헨 아크 용접 제어 방법
CN111558761A (zh) * 2019-02-13 2020-08-21 株式会社达谊恒 电弧焊接方法
CN111558761B (zh) * 2019-02-13 2023-11-28 株式会社达谊恒 电弧焊接方法

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