CN106552984A - Positive backward feed alternating current arc welding connects method - Google Patents
Positive backward feed alternating current arc welding connects method Download PDFInfo
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- CN106552984A CN106552984A CN201610561067.1A CN201610561067A CN106552984A CN 106552984 A CN106552984 A CN 106552984A CN 201610561067 A CN201610561067 A CN 201610561067A CN 106552984 A CN106552984 A CN 106552984A
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
-
- 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
- B23K9/067—Starting 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
- B23K9/06—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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
-
- 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
- B23K9/124—Circuits or methods for feeding welding wire
-
- 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
- B23K9/124—Circuits or methods for feeding welding wire
- B23K9/125—Feeding of electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The present invention provides positive backward feed alternating current arc welding and connects method.Connect in method in positive backward feed alternating current arc welding, suppress by the switching of polarity of electrode welded condition to become unstable.During feed speed (Fw) alternating by welding wire is switched to and is just entered and it is counter enter during, and the polarity of electrode alternating positive backward feed alternating current arc welding that switches to electrode straight polarity (EP) and Electrode Negative (EN) to be welded is connect in method, during be set in.Thus, due to the constant Phase-switching polarity of electrode (Spn) in feed speed (Fw), molten condition during switching becomes constant, therefore welded condition is stabilized.
Description
Technical field
The present invention relates to the feed speed alternating of switching welding wire is switched to just enter during and it is counter enter during, by polarity of electrode
The positive backward feed alternating current arc welding that alternating switches to electrode straight polarity and Electrode Negative to be welded connects method.
Background technology
In general consumable electrode type electric arc welding, fed as the welding wire for consuming electrode using constant speed, make welding wire
Produce electric arc to be welded between mother metal.In the welding of consumable electrode type electric arc, majority is to become friendship welding wire and mother metal more
For the welded condition during repeating short circuit and during electric arc.
In order to further lift welding quality, proposition is repeated cyclically just entering and the anti-method for coming in be welded for welding wire
(such as referenced patent document 1 etc.).
In the invention of patent document 1, the mean value of feed speed corresponding with welding current setting value is set, by welding wire
Just enter and it is counter enter frequency and amplitude be set to be worth corresponding with welding current setting value.
In addition, in the invention of patent document 2, describing feeding welding wire (electrode), polarity of electrode alternating being switched to electricity
Pole positive polarity and Electrode Negative are come the alternating current arc welding method welded.
Patent document
Patent document 1：No. 5201266 publication of JP patents
Patent document 2：No. 5090765 publication of JP patents
By welding wire feed speed alternating switch to just enter during and it is counter enter during, by polarity of electrode alternating switch to electricity
Pole positive polarity and Electrode Negative are connect in method come the positive backward feed alternating current arc welding welded, due to the switching of polarity of electrode
When feed speed direction and value will change whenever switching, therefore have welded condition to become unstable such to ask
Topic.
The content of the invention
For this purpose, in the present invention, it is therefore intended that, there is provided the welded condition during switching of polarity of electrode can be made stabilized just
Backward feed alternating current arc welds method.
In order to solve above-mentioned problem, the positive backward feed alternating current arc welding of the invention of technical scheme 1 connects method by welding wire
Feed speed alternating switch to just enter during and it is counter enter during, and by polarity of electrode alternating switch to electrode straight polarity and electrode to bear
Being welded, the positive backward feed alternating current arc welding connects method and is characterised by polarity, is specific phase in the feed speed
The switching of the polarity of electrode is carried out during position.
The invention of technical scheme 2 on the basis of the positive backward feed alternating current arc welding described in technical scheme 1 connects method, feature
It is, during the particular phases are set in during the feed speed just entered in period is just slowed down.
The invention of technical scheme 3 on the basis of the positive backward feed alternating current arc welding described in technical scheme 1 connects method, feature
It is that the particular phases are set in into the phase place that the feed speed just entered in period reduces speed now.
The invention of technical scheme 4 on the basis of the positive backward feed alternating current arc welding described in technical scheme 1 connects method, feature
It is that the particular phases are set in into the phase place that the feed speed just entered in period terminates to slow down.
The effect of invention
According to the present invention, the switching timing of polarity of electrode is determined with the constant phase place of feed speed.Thus in the present invention
In, stabilize can the welded condition during switching of polarity of electrode.
Description of the drawings
Fig. 1 is the welding that method is connect for implementing the positive backward feed alternating current arc welding involved by embodiments of the present invention 1
The block diagram of device.
Fig. 2 is the welding of Fig. 1 that the positive backward feed alternating current arc welding for representing involved by embodiments of the present invention 1 connects method
The sequential chart of each signal in device.
The explanation of label
1 welding wire
2 mother metals
3 electric arcs
4 welding torches
5 feed rolls
No. bis- rectifier groups of D2
DV drive circuits
Dv drive signals
E output voltages
EA voltage error amplifying circuits
Ea voltage errors amplify signal
ED output voltage detecting circuits
Ed voltage sense signals
EN Electrode Negatives
END Electrode Negative switch element driver circuits
End Electrode Negative switch element drive signals
EP electrode straight polarities
EPD electrode straight polarity switch element driver circuits
Epd electrode straight polarity switch element drive signals
ER output voltage initialization circuits
Er output voltage setting signals
The average feed speeds of Fa
The average feed speed initialization circuits of FAR
The average feed speed setting signals of Far
FC feeds control circuit
Fc feeds control signal
FR feed speed initialization circuits
Fr feed speed setting signals
Fw feed speeds
INT high frequency transformers
INV inverter circuits
Iw welding currents
NTR Electrode Negative switch elements
PTR electrode straight polarity switch elements
The frequency of Sf feed speeds
SFR frequency setting circuits
Sfr frequency setting signals
SPN polarity switching signal generating circuits
Spn polarity switching signals
Vw weldingvoltages
The amplitude of Wf feed speeds
WFR amplitude setting circuits
Wfr amplitude setting signals
WL reactors
WM feed motors
Specific embodiment
Embodiments of the present invention are illustrated below with reference to accompanying drawing.
[embodiment 1]
Fig. 1 is the welding that method is connect for implementing the positive backward feed alternating current arc welding involved by embodiments of the present invention 1
The block diagram of device.Each side's block is illustrated below with reference to Fig. 1.
3 phases 200V etc. are exchanged source power supply (diagram is omitted) as input for inverter circuit INV, to exchanging source power supply
Carry out rectification, smooth to generate DC voltage, inverter control is carried out according to drive signal Dv described later to the DC voltage, from
And export high-frequency ac.
High-frequency ac change is turned to high frequency transformer INT the magnitude of voltage for being suitable to weld.Secondary rectifier group D2 is to conversion
High-frequency ac carries out rectification, and the DC voltage for just exporting and bearing.
By carrying out on/off control to electrode straight polarity switch element PTR and Electrode Negative switch element NTR
System, switches the output polarity of welder.Become electrode straight polarity when electrode straight polarity switch element PTR is on-state
EP, becomes Electrode Negative EN when Electrode Negative switch element NTR is turned on.Reactor WL is put down to output
It is sliding.
Feed motor WM using it is described later feeding control signal Fc as input, periodically repeat just enter and it is counter enter, from
And welding wire 1 is fed with feed speed Fw.The fast motor of indicial response used in feed motor WM.In order to accelerate welding wire
The reversion of the rate of change and direction of feed of 1 feed speed Fw, feed motor WM are arranged on the attached of the front end of welding torch 4 sometimes
Closely.In addition, also having using 2 feed motor WM to make the situation of the feed system of push pull mode.
The feeding in the welding torch 4 by the rotation of feed rolls 5 that combined with above-mentioned feed motor WM of welding wire 1, with
Electric arc 3 is produced between mother metal 2.Apply weldingvoltage Vw, welding and mother metal 2 between in the confession sparking plug (diagram is omitted) in welding torch 4
Electric current 1w is powered.
Polarity switching signal Spn described later and feed speed described later are set by polarity switching signal generating circuit SPN
Signal Fr is lighted in the time that high level is turned to from change as input, output polarity switching signal Spn, polarity switching signal Spn
The time point for becoming particular phases in feed speed setting signal Fr after during the predetermined 1st becomes and turns to low electricity
It is flat, polarity switching signal Spn from change turn to the low level time light during the predetermined 2nd after in feeding speed
Degree setting signal Fr becomes the time point change of particular phases and turns to high level.As the specific phase of feed speed setting signal Fr
Position, selects one to set from following 3 kinds.Polarity switching signal Spn can also will be made to become specific when turning to low level
Phase place and the particular phases become when turning to high level are respectively set as different phase places.
1) during be set in.That is, if
During being scheduled on the differential value dFr/dt ＜ 0 of Fr >=0 and feed speed setting signal Fr.
2) phase place that feed speed setting signal Fr during be set in reduces speed now.That is, if
It is scheduled on Fr >=0 and dFr/dt initially becomes the phase place of negative value.
3) feed speed setting signal Fr during be set in terminates the phase place slowed down.That is, if
It is scheduled on the phase place of Fr=0 and dFr/dt ＜ 0.
Electrode straight polarity switch element driver circuit EPD output electricity when above-mentioned polarity switching signal Spn is high level
Pole positive polarity switch element drive signal Epd.Electrode Negative switch element driver circuit END is in above-mentioned polarity switching signal
Output electrode negative polarity switch element drive signal End when Spn is low level.Therefore, polarity switching signal Spn be high level
Shi Chengwei electrode straight polarities EP, become Electrode Negative EN in low level.
Output voltage initialization circuit ER exports predetermined output voltage setting signal Er.Output voltage detecting circuit ED
The alternating voltage (output voltage E) of 2 outputs of the above-mentioned high frequency transformer INT of detection, is converted into absolute value, is put down
It is sliding, and voltage sense signal Ed is exported.
Voltage error amplifying circuit EA is by the mistake of above-mentioned output voltage setting signal Er and voltage sense signal Ed
Difference is amplified, and output voltage error amplifies signal Ea.By the circuit, welder becomes constant voltage characteristic.Drive circuit DV will
Above-mentioned voltage error amplifies signal Ea as input, and amplifying signal Ea based on voltage error carries out PWM control, and output is used
In the drive signal Dv for driving above-mentioned inverter circuit INV.
Average feed speed initialization circuit FAR exports predetermined average feed speed setting signal Far.
Amplitude setting circuit WFR exports predetermined amplitude setting signal Wfr.Frequency setting circuit SFR outputs are advance
It is determined that frequency setting signal Sfr.
Feed speed initialization circuit FR is by above-mentioned average feed speed setting signal Far, above-mentioned amplitude setting signal
Wfr and above-mentioned frequency setting signal Sfr exports feed speed setting signal Fr as input, the feed speed setting letter
Number Fr makes average feed speed Fa that predetermined ladder type ripple becomes every 1 cycle set to side displacement is just entered with average feed speed
Determine the waveform of the equal values of signal Far, wherein, the ladder type ripple is with the amplitude that determined by amplitude setting signal Wfr and by frequency
The inverse of setting signal Sfr is the cycle of cycle set value determination in positive and negative change in shape.With regard to the feed speed setting signal
Fr, is described in detail in Fig. 2.Feed speed does not determine the waveform of signal Fr in addition to ladder type ripple, or sine wave, triangle
Ripple.
Above-mentioned feed speed setting signal Fr as input, will be used for equivalent to feeding speed by feeding control circuit FC
Feeding control signal Fc of the feed speed Fw feeding welding wire 1 of the value of degree setting signal Fr is exported to above-mentioned feed motor
WM。
Fig. 2 is the welding of Fig. 1 that the positive backward feed alternating current arc welding for representing involved by embodiments of the present invention 1 connects method
The sequential chart of each signal in device.Fig. 2 (A) represents the time change of feed speed Fw, and Fig. 2 (B) represents welding current Iw's
Time change, Fig. 2 (C) represent the time change of weldingvoltage Vw, and Fig. 2 (D) represents the time change of polarity switching signal Spn.
The action of each signal is illustrated below with reference to Fig. 2.
As shown in Fig. 2 (D), polarity switching signal Spn before moment t17 during in become low level (electrode
Negative polarity EN), during moment t17～t37 in become high level (electrode straight polarity EP), during moment t37～t57
In become low level (Electrode Negative EN), after moment t57 during in become high level (electrode straight polarity EP.Polarity
Switching signal Spn was repeated with moment t17～t57 as 1 cycle.
Feed speed Fw shown in Fig. 2 (A), is controlled as from the feed speed initialization circuit FR of Fig. 1 the feeding speed for exporting
The value of degree setting signal Fr.Feed speed setting signal Fr makes predetermined ladder type ripple become the average feeding speed in every 1 cycle
Degree Fa is displaced the waveform of the value equal with predetermined average feed speed setting signal Far to side is just entered, wherein, the ladder
Type ripple is with the amplitude Wf that determined by amplitude setting signal Wfr and becomes falling for frequency Sf determined by frequency setting signal Sfr
Several cycles is in positive and negative change in shape.Thus, as shown in the dotted line of Fig. 2 (A), average feed speed Fa no matter in electrode just
It is all equal in during polarity or during Electrode Negative.
As shown in Fig. 2 (A), feed speed Fw is in moment t1～t2, moment t2～t3, moment t3～t4, moment t4
～t5 and moment t5～t6 respectively became for 1 cycle.
As shown in Fig. 2 (A), in feed speed Fw, moment t1～t14 it is counter enter during respectively by it is given it is counter enter
During acceleration, it is counter enter summit during, it is counter enter peak value and it is counter enter slow down during formed, during just the entering of moment t14～t2 respectively
By it is given just entering to accelerate during, just enter summit during, just entering peak value and formed during just entering to slow down.As shown in Fig. 2 (D) that
Sample, as polarity switching signal Spn was low level before moment t17, therefore becomes Electrode Negative EN.For this purpose, Fig. 2 (B)
Weldingvoltage Vw shown in shown welding current Iw and Fig. 2 (C) becomes negative value.Due in moment t17, polarity switching letter
Number Spn becomes and turns to high level, therefore becomes electrode straight polarity EP.For this purpose, welding current Iw and weldingvoltage Vw become positive
Value.That is, in moment t17, polarity of electrode switches to electrode straight polarity EP from Electrode Negative EN.
[moment t1～t14 it is counter enter during action]
As shown in Fig. 2 (A), feed speed Fw enter into moment t1～t11 it is counter enter accelerate during, accelerate to from 0
It is above-mentioned it is counter enter peak value.In this period, short-circuit condition continues.It is Electrode Negative EN, Iw≤0 and vw≤0 during this period.
If moment t11 it is counter enter accelerate during terminate, as shown in Fig. 2 (A), feed speed Fw enters into the moment
T11～t13 it is counter enter summit during, become it is above-mentioned it is counter enter peak value.Moment t12 in this period, because it is counter enter and weld
Convergent force caused by the energization of electric current Iw and produce electric arc.Corresponding to this, as shown in Fig. 2 (C), weldingvoltage Vw increases severely
To the arc voltage value of tens of V, as shown in Fig. 2 (B), during welding current Iw electric arcs after which in gradually decrease.
Due to being Electrode Negative EN during this period, therefore become Iw≤0 and Vw≤0.
If moment t13 it is counter enter summit during terminate, as shown in Fig. 2 (A), enter into the anti-of moment t13～t14
Enter during slowing down, from it is above-mentioned it is counter enter peak value slow down to 0.In this period, continue during electric arc.As this period is that electrode is born
Polarity EN, therefore Iw≤0 and Vw≤0.
[action for just entering period of moment t14～t2]
As shown in Fig. 2 (A), feed speed Fw enter into moment t14～t15 just enter accelerate during, accelerate to from 0
Above-mentioned just enters peak value.In this period, keep during electric arc constant.As this period is Electrode Negative EN, therefore Iw≤0
And Vw≤0.
If terminating during moment t15 is just entering to accelerate, as shown in Fig. 2 (A), feed speed Fw enters into the moment
T15～t17 just enter summit during, become above-mentioned and just enter peak value.Moment t16 in this period is short because just further occurring
Road.Corresponding to this, as shown in Fig. 2 (C), weldingvoltage Vw reduces sharply the short circuit voltage value of several V, shown in such as Fig. 2 (B) that
Sample, during welding current Iw short circuits after which in gradually increase.As this period is Electrode Negative EN, therefore Iw≤0
And Vw≤0.
If terminating during the moment, t17 just entered summit, as shown in Fig. 2 (A), just moment t17～t2 is being entered into
Enter during slowing down, slow down to 0 from the above-mentioned peak value that just enters.In this period, continue during short circuit.In addition, though at the moment
T15, polarity switching signal Spn be low level period it is equal with during the predetermined 2nd, but feed speed Fw until it becomes
Low level is maintained till particular phases all.Here, the particular phases of feed speed Fw be set in moment t17～t2 just enter slow down
In period.In fig. 2, particular phases are set in the sart point in time just entered during slowing down of moment t17 sometimes.Due at the moment
T17, polarity switching signal Spn become the 2nd for low level period during more than and feed speed Fw becomes particular phases, therefore
Polarity switching signal Spn is switched to high level from low level.With this together, polarity of electrode switches to electrode from Electrode Negative EN
Positive polarity EP.Therefore, in this period, Iw >=0 and Vw >=0 are become.
During moment t2～t3, repetition it is above-mentioned it is counter enter during and it is above-mentioned just enter during action.Wherein,
As polarity switching signal Spn is high level, therefore become electrode straight polarity EP.Thus Iw >=0 and Vw >=0 are become.
As shown in Fig. 2 (A), in the beginning just entered during accelerating in the cycle of the moment t3～t4 of feed speed Fw
During time point t34, polarity switching signal Spn are high level, (moment t17～t34) is equal with during the predetermined 1st.
But feed speed Fw is until it becomes sart point in time t37 just entered during slowing down of particular phases all maintains high level.Such as
As shown in Fig. 2 (D), as in moment t37, polarity switching signal Spn is for the above during becoming the 1st during high level and enters
Become particular phases to speed Fw, therefore polarity switching signal Spn is switched to low level from high level.With this together, electrode pole
Property is switched to Electrode Negative EN from electrode straight polarity EP.Therefore, in during the moment, t37 divided a word with a hyphen at the end of a line, Iw≤0 and Vw are become
≤0。
As shown in Fig. 2 (A), in the cycle of the moment t5～t6 of feed speed Fw just enter summit during beginning
Time point t55, polarity switching signal Spn are that low level period (moment t37～t55) is equal with during the above-mentioned the 2nd.But enter
To speed Fw until it becomes sart point in time t57 just entered during slowing down of particular phases all maintains low level.Such as Fig. 2
(D) as shown in, due in moment t57, polarity switching signal Spn become the 2nd for low level period during more than and feed
Speed Fw becomes particular phases, therefore polarity switching signal Spn is switched to high level from low level.With this together, polarity of electrode
Electrode straight polarity EP is switched to from Electrode Negative EN.Therefore, in during the moment, t57 divided a word with a hyphen at the end of a line, become Iw >=0 and Vw >=
0。
Repeat above-mentioned action during after this.
The numerical example of the ladder type ripple of feed speed Fw described below.Frequency Sf=100Hz of feed speed Fw, amplitude Wf=
60m/min.In addition, the switching frequency of polarity switching signal Spn is 25Hz (cycle is 40ms).
The switching frequency of above-mentioned polarity switching signal Spn is set smaller than the value of the frequency of feed speed Fw, its setting
Scope is for about below 50Hz.The setting range of the frequency of feed speed is 60～150Hz degree.
Confirmed according to the experiment of inventors, by respectively with the constant true oriented electrodes of phase place of feed speed fw just
The switching timing of polarity EP and the switching timing to Electrode Negative EN, welded condition are stabilized.The reason for this is that in electrode
In the case of the phase place of feed speed Fw of the switching timing of polarity is inconstant, the various of switching timing for becoming polarity of electrode are melted
Melt the situation that state is mixed, welded condition becomes unstable.On the other hand, if the constant phase place in feed speed Fw is cut
Polarity of electrode is changed, then molten condition when switching becomes constant, welded condition becomes to stabilize.Further, inventors test
By the switching timing of polarity of electrode be set in it is counter enter accelerate during, it is counter enter summit during, it is counter enter slow down during, just entering accelerated period
Between, just enter summit during or just entering slow down during which during, welded condition more stableization.Its results verification, by with just
Particular phases in entering during slowing down determine the switching timing of polarity of electrode, make welded condition more stableization.
According to above-mentioned embodiment 1, the switching of polarity of electrode is carried out when feed speed is particular phases.It is preferred that, make
For particular phases, the feed speed in being set in during just entering just slow down during in.Additionally, it is preferred that, as particular phases, if
The phase place that feed speed in being scheduled on during just entering reduces speed now.Additionally, it is preferred that, as particular phases, being set in during just enter
In feed speed terminate slow down phase place.Thus, in the present embodiment, the switching timing of polarity of electrode is with feed speed
Constant phase place determines.Thus in the present embodiment, stabilize can the welded condition during switching of polarity of electrode.
Claims (4)
1. a kind of positive backward feed alternating current arc welding connects method, the feed speed of welding wire alternating being switched to during just enter and it is counter enter the phase
Between, and by polarity of electrode alternating switch to electrode straight polarity and Electrode Negative to be welded,
The positive backward feed alternating current arc welding connects method and is characterised by,
The switching of the polarity of electrode is carried out when the feed speed is particular phases.
2. positive backward feed alternating current arc welding according to claim 1 connects method, it is characterised in that
During the particular phases are set in during the feed speed just entered in period is just slowed down.
3. positive backward feed alternating current arc welding according to claim 1 connects method, it is characterised in that
The particular phases are set in into the phase place that the feed speed just entered in period reduces speed now.
4. positive backward feed alternating current arc welding according to claim 1 connects method, it is characterised in that
The particular phases are set in into the phase place that the feed speed just entered in period terminates to slow down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015189551A JP6601870B2 (en) | 2015-09-28 | 2015-09-28 | Forward / reverse feed AC arc welding method |
| JP2015-189551 | 2015-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106552984A true CN106552984A (en) | 2017-04-05 |
| CN106552984B CN106552984B (en) | 2020-07-07 |
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ID=58418359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610561067.1A Active CN106552984B (en) | 2015-09-28 | 2016-07-15 | Positive and negative feed alternating current arc welding method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6601870B2 (en) |
| KR (1) | KR102473580B1 (en) |
| CN (1) | CN106552984B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759677A (en) * | 2017-11-09 | 2019-05-17 | 株式会社达谊恒 | Welding supply |
| EP3974094A4 (en) * | 2019-05-22 | 2022-11-02 | Panasonic Intellectual Property Management Co., Ltd. | Arc welding method and arc welding device |
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| Publication number | Publication date |
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| JP6601870B2 (en) | 2019-11-06 |
| KR102473580B1 (en) | 2022-12-05 |
| KR20170037814A (en) | 2017-04-05 |
| JP2017064721A (en) | 2017-04-06 |
| CN106552984B (en) | 2020-07-07 |
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