CN102029460A - Pulsed arc welding method of carbon oxide - Google Patents
Pulsed arc welding method of carbon oxide Download PDFInfo
- Publication number
- CN102029460A CN102029460A CN2010102882323A CN201010288232A CN102029460A CN 102029460 A CN102029460 A CN 102029460A CN 2010102882323 A CN2010102882323 A CN 2010102882323A CN 201010288232 A CN201010288232 A CN 201010288232A CN 102029460 A CN102029460 A CN 102029460A
- Authority
- CN
- China
- Prior art keywords
- during
- short circuit
- mentioned
- value
- current
- 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.)
- Granted
Links
Images
Abstract
The present invention provides a pulsed arc welding method of carbon oxide. A peak period (Tp) of a peak current flow (Ip) and a reference period (Tb) of a reference current flow (Tp) are used as one pulse period (Tpb) for welding repeatedly. The peak current (Ip) is vibrated through an amplitude (Ws) and a vibration period (Ts) in a peak period (Tp) for forming a molten drop at a front end of a welding wire. In the reference period (Tb), the formed molten drop smoothly transits to a molten pool through short circuiting transfer. Therefore, short circuiting transfer is performed to the molten drop formed in the peak period (Tp) is performed in the reference period (Tb). Therefore one molten drop transition state in one pulse period can be realized. Therefore the welding with little splash can be performed. Therefore in the electrode fused pulsed arc welding of carbon oxide, the formation and release state of the molten drop are stabilized, and high-quality welding with little splash can be performed.
Description
Technical field
The present invention relates to be used for using, carry out the carbon dioxide pulse arc welding method of stable droplet transfer with the consumable electrode formula pulsed arc welding of carbon dioxide as the protective gas of principal component.
Background technology
Employing is widely used with the consumable electrode formula pulsed arc welding of argon gas as the protective gas of principal component.As being the protective gas of principal component with this argon gas; use (the active gases protection pulse welding of 20 volume % carbon dioxide+80 volume % argon gas during for ferrous materials at mother metal; マ グ パ Le ス welds), mother metal uses 100 volume % argon gas (inert gas shielding pulse welding, ミ グ パ Le ス welds) during for aluminum.In adopting with of the pulsed arc welding of this argon gas as the protective gas of principal component; because the droplet transfer is in the such particulate of diameter that becomes welding wire and the spray transfer state that stably carries out periodically, produce few good welding thereby can carry out sputter.Below be that the pulse arc welding of the protective gas of principal component taps into the row explanation to adopting with the argon gas.
Fig. 4 is the general current-voltage waveform figure that the pulsed arc of the protective gas of principal component welds with the argon gas for employing.This figure (A) expression changed the time of the welding current Iw that electric arc is switched on, and the time of the weldingvoltage Vw between this figure (B) expression welding wire and the mother metal changes.Below, describe with reference to this figure.
Constantly between the peak period of t1～t2 among the Tp, shown in this figure (A), form and carry out the transition to the welding wire front end in order to make molten drop, the above peak point current Ip of energising critical electric current value, shown in this figure (B), between welding wire and mother metal, apply the crest voltage Vp that grows up to ratio with electric arc.
Among the Tb, shown in this figure (A),, shown in this figure (B), apply base value voltage Vb during the base value of moment t2～t3 in order not form molten drop and the background current Ib of the little current value of switching on.During till moment t1～t3, weld repeatedly as pulse period Tpb.
In order to carry out good pulsed arc welding, it is important that electric arc length is maintained appropriate value., electric arc length carries out following such output control (the long control of electric arc) for being maintained appropriate value.Electric arc length and this figure (B) are by the roughly proportional relation of weldingvoltage mean value Vav shown in the dotted line.Therefore, detect weldingvoltage mean value Vav, the mode that equates according to this detected value weldingvoltage setting value long with being equivalent to suitable electric arc makes the output control that is changed by the welding current mean value Iav shown in the dotted line of this figure (A).It is electric arc length when longer than appropriate value that weldingvoltage mean value Vav sets value when big than weldingvoltage, therefore reduces welding current mean value Iav and reduces a fusion speed, and electric arc length shortens.Conversely, weldingvoltage mean value Vav than weldingvoltage setting value hour be electric arc length than appropriate value in short-term, therefore increase welding current mean value Iav and increase silk fusion speed, electric arc length is elongated.As above-mentioned weldingvoltage mean value Vav, usually use the situation of the value after carrying out smoothly to weldingvoltage Vw more.
In above-mentioned, as the output control of the source of welding current that is used to make welding current mean value Iav to change, main frequency of utilization modulation control and pulse width modulation control.In the frequency modulation(PFM) control, with peak point current Ip, background current Ib and between the peak period Tp be fixed as setting, the length of Tb during the control base value is so that weldingvoltage mean value Vav sets value with weldingvoltage equates.The Tpb of following pulse period of situation that Tb changes during the base value changes, and therefore this mode is called frequency modulation(PFM) control.In addition, in the pulse width modulation control, peak point current Ip, background current Ib and pulse period Tpb are fixed as setting, the length of Tp between the control peak period is so that weldingvoltage mean value Vav sets value with weldingvoltage equates.
Next, with reference to this figure the droplet transfer is described.The welding wire front end is melted by the energising of peak point current Ip, forms molten drop.At this moment, use with the protective gas of argon gas as principal component, the anode spot that therefore forms electric arc does not concentrate on the molten drop bottom, and that expansion is distributed in molten drop is all.Thereby, molten drop is not acted on pushing force.When peak point current Ip switches on to formed molten drop, molten drop top is acted on the convergent force of electromagnetism and produces necking down.Afterwards, before and after Tp finishes between the peak period (before closing to an end, when finishing or after finishing soon), molten drop breaks away from and carries out transition to fusion pool.If above-mentioned peak point current Ip and between the peak period combination of Tp be called unit pulse (unit pulse) condition, then be set at the value that the such molten drop of diameter of welding wire is formed and breaks away from.Therefore, molten drop carries out spray transfer as the such particulate of the diameter of welding wire by Tp between each peak period.This state is called 1 pulse, 1 droplet transfer state.As above such, the considerably less possibility that is welded into takes place in sputter.
As mentioned above, be in the pulsed arc welding of protective gas of principal component adopting with the argon gas, be in the stable spray transfer state of 1 droplet transfer of 1 pulse.At this, argon gas is compared cost with carbon dioxide and is uprised, and the ratio of therefore attempting the ratio by reducing argon gas in the past and increasing carbon dioxide is cut down the cost of protective gas.But, in the mist of carbon dioxide and argon gas, if the ratio of carbon dioxide surpasses 30 volume %, difficulty then because following illustrated reason and stable spray transfer become gradually.Especially surpass under the situation of carbon dioxide of 50 volume % at the ratio that uses carbon dioxide, can not be in stable spray transfer state, produce the sputter thing of big grain as the protective gas of principal component.In this later explanation,, mean that the ratio of carbon dioxide surpasses the mist of 50 volume % recording when being the protective gas of principal component with the carbon dioxide.Under using with the situation of carbon dioxide as the protective gas of principal component, the anode spot that forms electric arc when peak point current Ip switches on concentrates on the foot of molten drop.This is because the electric potential gradient of comparing carbon dioxide with argon gas is big, the effect generation that therefore makes electric arc length become the shortest.Its result is in the state that the temperature of anode spot significantly uprises, and is in metallic vapour and blows afloat the state that comes, to molten drop effect pushing force.I.e. energising by peak point current Ip forms molten drop, and this pushing force effect, and molten drop is in the state that does not break away from simply.Under this state, break away from forcibly in order to make molten drop, need make between the peak period Tp increase about 3～5 times than general value, molten drop is grown up significantly, break away from by gravity.But if do like this, then the molten drop piece of size of several times degree that becomes the diameter of welding wire breaks away from, and produces the sputter thing of big grain.And then, the asynchronous and transition randomly of the energising of this big molten drop and peak point current Ip, welded condition plays pendulum, and welding quality is variation also.In order to solve the problem as described above of the pulsed arc welding that employing is the protective gas of principal component with the carbon dioxide (below be called the welding of carbon dioxide pulsed arc), following such prior art is proposed.
In the invention of patent documentation 1, the first-half period of establishing peak point current Ip becomes stepped that right shoulder descends for than value big between latter half.By as above carrying out like that, between the latter half of peak point current Ip, form molten drop, next molten drop is carried out shaping by Tb during the base value, then the first-half period by peak point current Ip makes the droplet transfer.In addition, in the invention of patent documentation 2～4, peak point current Ip is switched on as a plurality of peak point current groups, make the formation stabilisation and the transition easily of molten drop.
The clear 60-56486 communique of [patent documentation 1] TOHKEMY
The clear 61-17369 communique of [patent documentation 2] TOHKEMY
The flat 1-254385 communique of [patent documentation 3] TOHKEMY
[patent documentation 4] TOHKEMY 2007-237270 communique
[patent documentation 5] TOHKEMY 2006-116546 communique
As mentioned above, in the welding of carbon dioxide pulsed arc,, the various schemes shown in the patent documentation 1～4 have been proposed for formation and the disengaging that improves molten drop.But at current time, not talkative carbon dioxide pulsed arc welding is practical, and the welder of carbon dioxide pulsed arc welding usefulness is not sold yet.Even foregoing is represented to implement the improvement that patent documentation 1～4 is proposed, problem still exists.
According to the invention of patent documentation 1, the transition probability of molten drop uprises by the peak point current of first-half period, but the transition of molten drop is still not more with the situation that peak point current produces synchronously and randomly.This is because the value of the peak point current by increasing first-half period and form necking down on molten drop top, thereby promotes to break away from, but then, because pushing force also increases, so the cause that do not break away from veritably of molten drop.In addition, according to the invention of patent documentation 2～4, by peak point current is switched on as a plurality of peak point current groups, thereby can form molten drop smoothly.This is because a side who switches on as a plurality of peak point current groups compares with the continuous peak point current of switching on, and can disperse the pushing force to the molten drop effect, and is level and smooth thereby the formation of molten drop becomes.But for the molten drop that makes this formation breaks away from by peak point current, it is necessary forming necking down on the top of molten drop, also acts on pushing force this moment simultaneously.Its result, it is difficult that the energising by a plurality of peak point current groups breaks away from molten drop veritably.Therefore, in the invention of patent documentation 2～4, the formation of molten drop is enhanced, but the problem that residual molten drop breaks away from reliably.
At this, when the direct current CO2 welding of ferrous materials was tapped into row and considers, in the average galvanic areas of welding current value less than about 200A, molten drop was in short circuiting transfer.Be during arc period and the short circuit by periodically repeatedly, the molten drop that forms in arc period carries out transition in during short circuit.By the welding current in during this short circuit is critically controlled, thereby can be in the state of the generation that reduces sputter.But, adopt with the argon gas pulsed arc welding (active gases protection pulse welding or inert gas shielding pulse welding) of the protective gas that is principal component can reach the generation that further reduces sputter.But, we can say that in this galvanic areas the generating capacity of the sputter that CO2 welding connects is level no problem in practicality.Be the above galvanic areas of about 200A if be in average welding current value, be in the droplet transfer when then electric arc length is elongated, molten drop is not followed short circuit and is carried out transition by freely falling owing to gravity.Therefore, the generation of sputter is few.In this galvanic areas, be the above high-speed welding of 80cm/min owing to carry out speed of welding, the therefore weld defect in order to prevent that undercut (undercut) from waiting need weld than set shortly electric arc is long.If it is long to shorten electric arc, then molten drop is in the state of following short circuit to carry out transition.And because the timing that short circuit produces is at random, so the size of molten drop also has various sizes, owing to be in irregular droplet transfer state, therefore the sputter deposits yields of big grain is more.Therefore, in the galvanic areas more than 200A, carry out under the situation of high-speed welding,, can reduce the generation of sputter by adopting with the argon gas pulsed arc welding of the protective gas that is principal component.
As mentioned above, adopting with the carbon dioxide is that the protective gas of principal component welds, and the welding condition of generation of wanting to reduce sputter is for carrying out the situation of high-speed welding in the special galvanic areas more than 200A.At this, the objective of the invention is to, in the high-speed welding in the galvanic areas more than 200A, by improving the droplet transfer state of carbon dioxide pulsed arc welding, thereby reduce the sputter generating capacity when connecing than CO2 welding.
Summary of the invention
In order to solve above-mentioned problem; the invention of technical scheme 1; use is with the protective gas of carbon dioxide as principal component; the feeding welding wire; and weld repeatedly as 1 pulse period between the peak period of the peak point current that will circulate and during the base value of circulation background current; this carbon dioxide pulse arc welding method is characterised in that; in between the above-mentioned peak period above-mentioned peak point current is carried out constant current control; and the front end by above-mentioned peak point current is vibrated at welding wire forms molten drop; the molten drop that makes this formation by short circuiting transfer in during the above-mentioned base value is to the fusion pool transition, controls and carries out the long control of electric arc by the weldingvoltage in during the above-mentioned base value being carried out constant voltage.
The invention of technical scheme 2, according to technical scheme 1 described carbon dioxide pulse arc welding method, it is characterized in that the amplitude of the above-mentioned peak point current that vibrates and vibration period are set to the overheated and sputter thing value of dispersing of the molten drop from form not that suppresses molten drop.
The invention of technical scheme 3 according to technical scheme 1 or 2 described carbon dioxide pulse arc welding methods, is characterized in that the waveform of the above-mentioned peak point current that vibrates is that rectangle is wavy.
The invention of technical scheme 4 according to each described carbon dioxide pulse arc welding method in the technical scheme 1～3, is characterized in that, between the above-mentioned peak period for during setting according to the feed speed of welding wire.
The invention of technical scheme 5 according to each described carbon dioxide pulse arc welding method in the technical scheme 1～4, is characterized in that, during the above-mentioned base value for carry out continuation before the short circuiting transfer during.
The invention of technical scheme 6, according to each described carbon dioxide pulse arc welding method in the technical scheme 1～4, it is characterized in that, during the short circuit standby before being taken place by short circuit during the above-mentioned base value and then the molten drop during this short circuit standby carries out forming during the short circuit of short circuiting transfer, the 1st background current that middle circulation is determined by arc load during the above-mentioned short circuit standby, middle circulation begins along with effluxion the 2nd background current of increase gradually from the value of above-mentioned the 1st background current during the above-mentioned short circuit.
The invention of technical scheme 7, according to each described carbon dioxide pulse arc welding method in the technical scheme 1～4, it is characterized in that, during the short circuit standby before taking place by short circuit during the above-mentioned base value, then the molten drop during this short circuit standby carry out during the short circuit of short circuiting transfer and then during this short circuit prevent that electric arc is short-circuited after taking place once more once more predetermined form during short circuit prevents once more, the 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current that increases gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, above-mentioned once more during short circuit prevents in circulation 3rd background current bigger than the value of above-mentioned the 1st background current.
The invention of technical scheme 8, according to each described carbon dioxide pulse arc welding method in the technical scheme 1～4, it is characterized in that, during the short circuit standby before taking place by short circuit during the above-mentioned base value, then the molten drop during this short circuit standby carry out during the short circuit of short circuiting transfer and then the predetermined timing period during this short circuit form, the 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current that increases gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, the 4th little background current of value of above-mentioned the 2nd background current of the end time point of circulation during than above-mentioned short circuit in the above-mentioned timing period.
The invention of technical scheme 9, according to each described carbon dioxide pulse arc welding method in the technical scheme 1～4, it is characterized in that, during the short circuit standby before taking place by short circuit during the above-mentioned base value, then the molten drop during this short circuit standby carries out during the short circuit of short circuiting transfer, then predetermined during short circuit prevents once more and then this predetermined timing period during short circuit prevents once more that prevents that electric arc is short-circuited after taking place once more once more during this short circuit forms, the 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current of increase gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, above-mentioned once more during short circuit prevents in circulation 3rd background current bigger than the value of above-mentioned the 1st background current, the 4th little background current of value of above-mentioned the 2nd background current of the end time point of circulation during in the above-mentioned timing period than above-mentioned short circuit.
By the present invention; in adopting with the carbon dioxide pulse arc welding method of carbon dioxide as the protective gas of principal component; be provided with between the peak period and base value during; vibrate by the peak point current in making between the peak period molten drop is formed roughly desired size, the molten drop that can make this formation carries out short circuiting transfer in during base value.Therefore, can realize 1 pulse period, 1 droplet transfer state, few high quality welding take place thereby can carry out sputter.Especially during the high-speed welding in the galvanic areas more than 200A, connect method with the CO2 welding of direct current and compare the generation that can suppress sputter, also can improve the welding bead outward appearance.
Description of drawings
Fig. 1 is the current-voltage waveform figure of the relevant carbon dioxide pulse arc welding method of expression embodiments of the present invention.
Fig. 2 is illustration embodiments of the present invention figure relevant and feed speed appropriate value of Tp between the corresponding peak period.
Fig. 3 is the block diagram that is used to implement the source of welding current of the relevant carbon dioxide pulse arc welding method of embodiments of the present invention.
Fig. 4 is the current-voltage waveform figure of existing pulse arc welding method.
The explanation of symbol:
The 1-welding wire; The 2-mother metal; 3-electric arc; The 4-welding torch; The 5-feed rolls; Bi-current differential signal; The E-output voltage; Ecr-Control of Voltage setting signal; The ED-output voltage detecting circuit; The Ed-voltage sense signal; EI-current error amplifying circuit; Ei-current error amplifying signal; ERC-electronic inductor control circuit; ER-output voltage initialization circuit; Er-output voltage setting signal; EV-voltage error amplifying circuit; Ev-voltage error amplifying signal; The Hip-high peak current; HIPR-high peak current initialization circuit; HIpr-high peak current setting signal; During the HTp-peak value; Iav-welding current mean value; The Ib-background current; Ib1-the 1st background current; Ib2-the 2nd background current; Ib3-the 3rd background current; Ib4-the 4th background current; The ID-current detection circuit; Id-welding current detection signal; The Ip-peak point current; IPR-peak point current initialization circuit; Ipr-peak point current setting signal; The Iw-welding current; The Lip-low peak current; During the LTp-low peak; The PM-electric power main circuit; Sd-short circuit discrimination circuit; Sd-short circuit discrimination signal; The Spb-pulse-period signal; Control switching circuit during the ST-; Switch-over control signal during the St-; SUB-subtraction circuit; The SW-commutation circuit; During the Tb-base value; The Td-timing period; TDR-timing period initialization circuit; Tdr-timing period setting signal; Th-is during short circuit prevents once more; THR-initialization circuit during short circuit prevents once more; Thr-setting signal during short circuit prevents once more; Tp-is between the peak period; The Tpb-pulse period; The Ts-vibration period; TSR-vibration period initialization circuit; Tsr-vibration period setting signal; Vb-base value voltage; The VD-voltage detecting circuit; Vd-weldingvoltage detection signal; The Vp-crest voltage; The Vw-weldingvoltage; The Ws-amplitude; The WSR-amplitude setting circuit; Wsr-amplitude setting signal
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
Fig. 1 is the current-voltage waveform figure of the relevant carbon dioxide pulse arc welding method of expression embodiments of the present invention.The time of this figure (A) expression welding current Iw changes, and the time of this figure (B) expression weldingvoltage Vw changes.This figure is the situation of carbon dioxide pulse arc welding method that adopts with the carbon dioxide protective gas that is principal component.Below, describe with reference to this figure.
In the relevant carbon dioxide pulse arc welding method of embodiments of the present invention, the pulse period Tpb of t1～t3 forms during two constantly.Being Tb during the base value of t1～t2 constantly during first, be Tp between peak period of moment t2～t3 during second.Therefore, with Tb during the base value and between the peak period Tp weld repeatedly as 1 pulse period Tpb.Molten drop carries out short circuiting transfer among the Tb during base value, forms molten drop between the peak period among the Tp.Tp is redefined for appropriate value so that form the molten drop of almost fixed size between the peak period.Among the Tp, the output of the source of welding current is controlled by constant current between this peak period, therefore can directly control the value of peak point current Ip.During the base value among the Tb for the molten drop that between the peak period, forms among the Tp carry out being continued before the short circuiting transfer during, become different values by phase weekly.The output of the source of welding current during this base value among the Tb is controlled by constant voltage.This is because same during with general consumable electrode arc welding, controls the cause of carrying out the long control of electric arc by output being carried out constant voltage.Therefore, the value of background current Ib becomes and can not directly control and by the value of arc load decision.Below, to explaining during each.
(1) Tb (during the short circuiting transfer) during the base value
Be in the state that forms molten drop between the peak period during last among the Tp.Afterwards, shown in this figure (A), the 1st background current Ib1 that is determined by arc load goes into circulation from moment t1.Determine accordingly owing to be in the feed speed of welding current mean value and welding wire under the stable state, if so feed speed be fixed value, then welding current mean value also can be seen fixed value as.Because peak point current Ip is set to big value, therefore in order to make welding current mean value become fixed value, relatively background current Ib becomes little value.Therefore, the value of the 1st above-mentioned background current Ib1 also becomes the value littler than the mean value of peak point current Ip.Shown in this figure (B), weldingvoltage Vw becomes base value magnitude of voltage Vb.Under this state, welding wire is fed to fusion pool with the fixed speed of regulation, and the 1st above-mentioned background current Ib1 is little current value, so feed speed is faster than fusion speed, and the silk front end is approaching to fusion pool gradually.Afterwards, at moment t11, the molten drop of silk front end contacts with fusion pool and when being in short-circuit condition, shown in this figure (B), weldingvoltage Vw drops sharply to the short-circuit voltage value of several V degree.When differentiating this short-circuit condition by the variation of weldingvoltage Vw, shown in this figure (A), the 2nd background current (short circuit current) Ib2 that circulates and little by little increase along with effluxion from the value of the 1st above-mentioned background current Ib1, and short-circuit condition is disengaged.During the short circuit of moment t11～t12, molten drop carries out short circuiting transfer, and in moment t12, electric arc takes place once more.If electric arc takes place once more, then shown in this figure (B), weldingvoltage Vw sharply rises to the arc voltage value of tens of V degree.If differentiate the generation once more of electric arc by the variation of weldingvoltage Vw, then shown in this figure (A), during t12～t13 predetermined, short circuit prevented once more constantly among the Th circulation than i.e. the 3rd background current Ib3 of the big value of the value of the 1st above-mentioned background current Ib1.By the circulation of the 3rd background current Ib3, prevent from after electric arc takes place once more, to be short-circuited once more soon.At electric arc time point takes place once more promptly, because silk front end and fusion pool are in the distance that is close, according to welding condition (kind of welding wire, feed speed, groove are distributed (opening on the first Meter), speed of welding etc.) because the vibration of a little of fusion pool is in the incidental state of short circuit once more.If short circuit takes place once more, then sputter takes place, and welded condition also becomes unstable.In order to prevent this generation of short circuit once more, the 3rd background current Ib3 of the big value of circulation when taking place once more by electric arc, thus strengthening arc force to fusion pool, the extrusion molten pond increases the distance between a front end and the fusion pool, thereby prevents short circuit once more.By controlling so that the 3rd background current Ib3 gently reduce from the electric current under the time point that takes place once more at moment t12 electric arc, thereby keep big value.Above-mentioned during short circuit prevents once more Th be set at the scope of 0.5～3ms degree.Preferred this during short circuit prevents once more Th carry out standardization according to welding condition.
Afterwards, shown in this figure (A), the moment t2 after having passed through predetermined timing period Td from the above-mentioned moment t13 that Th finishes during short circuit prevents once more, Tp shifts between the peak period.In the timing period Td of this moment t13～t2, shown in this figure (A), the circulation value littler than the value of above-mentioned the 2nd background current of the end time point during the above-mentioned short circuit is the 4th background current Ib4, and shown in this figure (B), weldingvoltage Vw becomes base value voltage Vb.This timing period Td is set to the scope of 0.5～3ms degree.The reason that this timing period Td is set is the 4th background current Ib4 by the little current value of circulation after taking place once more at electric arc, thereby weakens the arc force to fusion pool, the cause that makes the fusion pool surface become smooth.Thus, can reduce sputter when the peak point current Ip of big current value goes into circulation from fusion pool.
Droplet transfer among the Tb during this base value is described, as described below.Among the Tp, molten drop forms the almost fixed size as described later like that between the last peak period.Afterwards, therefore the 1st background current Ib1 of the little current value of middle circulation during the short circuit standby of t1～t11 less acts on lift force to molten drop constantly, gravity and surface tension effect, and its shape is shaped as ball shape.In addition, under the state of the 1st background current Ib1 of little current value circulation, take place in 11 short circuits constantly, so the reducing of the sputter of short circuit when taking place.Contact with fusion pool under by the state of shaping simultaneously, therefore become one smoothly with fusion pool at molten drop.Therefore, molten drop is in the short circuiting transfer state, thereby need not greatlyyer than the value of the 2nd background current Ib2 in during the short circuit, and carries out transition smoothly, produces electric arc once more.A spot of sputter takes place, but owing to be level and smooth short circuiting transfer, therefore this amount can not become many, can not reach the level that becomes problem in the practicality when this electric arc produces once more.
During the above-mentioned short circuit standby for molten drop in fusion pool, carry out before the short circuit during, therefore be not fixed value and be the value that changes all the time according to welded condition.Equally, during the above-mentioned short circuit for carry out from molten drop and fusion pool short circuit begin till finish transition electric arc and take place once more during, therefore be not fixed value but the value that changes according to the droplet transfer state.But under the situation that is in stable welded condition, the deviation during this short circuit is little.Above-mentioned during short circuit prevents once more Th and above-mentioned timing period Td be predetermined fixed value.Therefore, as being that Tb is not fixed value but the value that changes according to welded condition during the base value during the total during these.But under stable welded condition, Tb can regard the almost fixed value as during the base value.Background current Ib during the base value among the Tb is formed by the 1st above-mentioned background current Ib1～the 4th background current Ib4.Above-mentioned during short circuit prevents once more Th and timing period Td can set according to welding condition and whether be provided with.This is because there is the situation of effect of setting the minimizing etc. of the side realization sputter during each according to welding condition.Conversely, even set the welding condition of the effect that also has the minimizing that can not realize sputter etc. during these.Therefore, as long as according to welding condition, from following such pattern of four model selections, Tb gets final product during the formation base value.
(a) during the short circuit standby+short circuit during
(b) during the short circuit standby+short circuit during+Th during short circuit prevents once more
(c) during the short circuit standby+short circuit during+timing period Td
(d) during the short circuit standby+short circuit during+Th+ timing period Td during short circuit prevents once more
(2) Tp (during the molten drop formation) between the peak period of moment t2～t3
Constantly between the peak period of t2～t3 among the Tp, shown in this figure (A), the peak point current Ip that circulation is vibrated, shown in this figure (B), weldingvoltage Vw becomes the crest voltage Vp that vibrate corresponding with it.The vibrational waveform of peak point current Ip shown in this figure (A), becomes high peak current HIp among the HTp during the peak value shown in t2～t21 constantly, becomes low peak current LIp during the low peak of ensuing moment t21～t22 among the LTp.Become vibration period Ts during the peak value during HTp and the low peak during the total of LTp.In addition, high peak current HIp and low peak current LIp poor (HIp-LIp) becomes amplitude Ws.And then, dutycycle Ds=HTp/Ts.Therefore, peak point current Ip is vibrated by amplitude Ws and vibration period Ts.The example of the scope of each value when welding wire becomes the stone dead wire of diameter 1.2mm is as follows.High peak current HIp:350～500A, amplitude Ws:200～400A, vibration period Ts:1.5～3.0ms, dutycycle Ds:0.5～0.75.In the figure, illustration peak point current Ip with the wavy situation about vibrating of rectangle, but also can be trapezoidal wavy, triangle is wavy, sinusoidal wave shape, sawtooth are wavy etc. vibrates.Make the reasons are as follows that peak point current Ip vibrates.Peak point current Ip is vibrated and when switching on continuously, the temperature of molten drop overheats along with the formation of molten drop, produce the gas exapnsion that comprises in the molten drop and the phenomenon of droplet breaks.If this fracture phenomena produces, then the sputter thing disperses from molten drop, and the formation of molten drop is also hindered.If peak point current Ip is vibrated with suitable amplitude Ws and vibration period Ts, then can suppress the overheated of molten drop, can form the molten drop of expectation size.The molten drop of expectation size is the size of 1.5～2.5 times of degree of the diameter of welding wire.Therefore, amplitude Ws and vibration period Ts are set to molten drop does not have value overheated and that the sputter thing does not disperse from molten drop.Two values are set at appropriate value according to the kind of the material of welding wire, diameter, protective gas, feed speed etc.Form the roughly molten drop of desired size according to Tp between this peak period.
As mentioned above, the length of Tp is set to appropriate value according to welding condition (material of welding wire, diameter and feed speed) between the peak period.This appropriate value is according to welding experiment in each welding condition, it is chosen that the molten drop that forms among the Tp between the peak period stably becomes the mode of same size roughly.Fig. 2 carries out illustrative figure for the appropriate value to the relative feed speed of Tp between the peak period.The transverse axis of this figure is represented feed speed (m/min), and the longitudinal axis is represented Tp between the peak period (ms).This figure is the situation that welding wire uses the stone dead wire of diameter 1.2mm.As shown in the drawing, along with feed speed accelerates, Tp is also elongated between the peak period.This be since feed speed when accelerating, prolong Tp between the peak period and obtain feed speed with fusion speed between balance so that the big cause of droplet size change that forms among the Tp between the peak period.
Droplet transfer to the relevant carbon dioxide pulse arc welding method of above-mentioned embodiments of the present invention puts in order, as described below.
(1) between the peak period among the Tp, vibrates, can suppress overheated to molten drop, and prevent to take place from the sputter of molten drop by making peak point current Ip.The length of Tp is set to appropriate value according to welding condition between the peak period.Therefore, can stably form the molten drop of desired size.
(2) during the base value among the Tb, by the 1st background current Ib1 of the little current value that circulates, the molten drop of guiding welding wire front end carry out and fusion pool between short circuit.Afterwards, molten drop carries out short circuiting transfer.Owing to be short-circuited with the 1st background current Ib1 of little current value, so the reducing of the sputter of short circuit when taking place.In addition, the molten drop of almost fixed size carries out short circuiting transfer, therefore carries out transition smoothly, and the generation of the sputter when electric arc takes place does not once more reach yet becomes the such amount of problem in the practicality.
(3) by the action of above-mentioned (1) and (2), a molten drop synchronously carries out transition by each pulse period Tpb.Promptly, 1 droplet transfer of 1 pulse period state realizes, is in stable welded condition.Therefore, during high-speed welding in welded condition becomes galvanic areas more than the unsettled 200A easily, the few high quality welding of generation that also can carry out sputter.
The numerical example of each parameter in the waveform of following table diagrammatic sketch 1.Welding wire: the stone dead wire of diameter 1.2mm, average welding current value: 220A, feed speed (setting value): 7m/min, the 1st background current Ib1:100A during the short circuit standby, Th during short circuit prevents once more (setting value): 1ms, timing period Td (setting value): 1ms, the 4th background current Ib4:100A, high peak current value HIp (setting value): 450A, amplitude Ws (setting value): 350A, vibration period Ts (setting value): 2.0ms, dutycycle Ds (setting value): 1.5/2.0=0.75, Tp between the peak period (setting value): 9.5ms.The record of (setting value) represents to be redefined for the value of appropriate value.Conversely, the value that is not recited as (setting value) is a measured value, is expressed as the value that changes.
Fig. 3 is the block diagram that is used to implement the source of welding current of the relevant carbon dioxide pulse arc welding method of the embodiments of the present invention described in Fig. 1.Below, with reference to this figure each module is described.
Electric power main circuit PM as input, according to the output control that error amplification signal Ea described later carries out inversion control, exports the welding current Iw and the output voltage E that are suitable for arc welding with the source power supply (omitting diagram) of 3 phase 200V etc.This electric power main circuit PM omits diagram, but for example by forming with the lower part: No. 1 rectifier that source power supply is carried out rectification; To being carried out level and smooth capacitor by the direct current of rectification; With smoothed DC converting is the inverter circuit of high-frequency ac; With the high-frequency ac step-down is the high frequency transformer that is suitable for the magnitude of voltage of arc welding; High-frequency ac after the step-down is carried out No. 2 rectifiers of rectification; Above-mentioned error amplification signal Ea as input, is carried out pulse width modulation control, the drive circuit that above-mentioned inverter circuit is driven based on this result.Reactor WL is the device that twines cable on iron core, has the inductance value of Lw (μ H), and the output of above-mentioned electric power main circuit PM is carried out smoothly.Become output voltage E from the voltage of electric power main circuit PM output, become weldingvoltage Vw by the voltage behind the reactor WL.Therefore, weldingvoltage Vw becomes the voltage between welding wire 1 and the mother metal 2.Welding wire 1 is fed through in the welding torch 4 by the rotation of the feed rolls 5 of a silk feed arrangement (omit diagram), and mother metal 2 between produce electric arc 3.
Current detection circuit ID detects above-mentioned welding current Iw, output welding current detection signal Id.Voltage detecting circuit VD detects above-mentioned weldingvoltage Vw, output weldingvoltage detection signal Vd.Short circuit discrimination circuit SD as input, differentiates short-circuit condition according to this value with this weldingvoltage detection signal Vd, and output becomes the short circuit discrimination signal Sd of high level.Setting signal Tpr between the peak period that initialization circuit TPR output is scheduled between the peak period.Setting signal Tpr between this peak period as mentioned above, is set at appropriate value according to welding condition.The predetermined setting signal Thr during short circuit prevents once more of initialization circuit THR output during short circuit prevents once more.The predetermined timing period setting signal Tdr of timing period initialization circuit TDR output.Control switching circuit ST is with setting signal Tpr between the above-mentioned peak period during this time, above-mentioned setting signal Thr during short circuit prevents once more, above-mentioned timing period setting signal Tdr and above-mentioned short circuit discrimination signal Sd are as input, by setting signal Tpr between the peak period determine during when finishing, this value is changed to 1 (during the short circuit standby), when short circuit judgment signal Sd becomes high level (short-circuit condition) in this period, this value becomes 2 (during the short circuits), when short circuit discrimination signal Sd becomes low level (electric arc generation state) afterwards, from this time point by setting signal Thr during short circuit prevents once more determine during, this value becomes 3 (Th during short circuit prevents once more), next by timing period setting signal Tdr determine during in this value become 4 (timing period Td), next by setting signal Tpr between the peak period determine during in this value become 5 (Tp between the peak period), switch-over control signal St between period of output.Switch-over control signal St during this period, in Fig. 1, become 1 in constantly during the short circuit standby of t1～t2, become 2 in constantly during the short circuit of t11～t12, constantly become 3 among the Th during short circuit prevents once more of t12～t13, become 4 among the timing period Td of t13～t2 constantly, become 5 among the Tp between the peak period of t2～t3 constantly.
Electronic inductor control circuit ERC, with switch-over control signal St during above-mentioned and above-mentioned welding current detection signal Id as input, when switch-over control signal St is 2 (during the short circuits) or 3 (during short circuit prevents once more) during this time welding current detection signal Id is carried out differential and multiply by predetermined magnifying power Lr, output current differential signal Bi=LrdId/dt, when switch-over control signal St is for the value beyond this value during this time, output current differential signal Bi=0.This magnifying power Lr is positive value, is the constant of decision by the inductance value of the reactor of Electronic Control formation.Therefore, as described later, the increment rate of the welding current during this magnifying power Lr decision short circuit and the slip of the welding current among the Th during short circuit prevents once more.The predetermined output voltage setting signal Er of output voltage initialization circuit ER output.Subtraction circuit SUB deducts above-mentioned current differential signal Bi from this output voltage setting signal Er, output voltage control setting signal Ecr=Er-Bi.Output voltage detecting circuit ED detects above-mentioned output voltage E and exports voltage sense signal Ed.Voltage error amplifying circuit EV amplifies the error between above-mentioned Control of Voltage setting signal Ecr and this voltage sense signal Ed, output voltage error amplifying signal Ev.This electronic inductor control shown in patent documentation 5, is the technology that in the past was widely used.Its summary is as follows.If become during the short circuit of moment t11～t12 shown in Figure 1, then load condition is in short circuit load, controlled by constant voltage, so welding current Iw increases hastily.At this moment, magnifying power Lr＞0, dId/dt＞0, so current differential signal Bi＞0.Its result, Control of Voltage setting signal Ecr=Er-Bi become the value of the value of the little current differential signal of specific output voltage setting signal Er Bi, slow down gathering way of welding current Iw.If be in the Th during short circuit prevents once more of t12～t13 constantly, then load condition becomes arc load, so welding current Iw reduces.At this moment, welding current Iw also reduces lentamente by electronic inductor control.The electric current of its result, the 3rd above-mentioned background current Ib3 during short circuit prevents once more among the Th big value when roughly pilot arc takes place once more.If become the timing period Td of t13 constantly, then the action of electronic inductor control is under an embargo, so welding current Iw is die-offed and become the 4th background current Ib4 of little value.In this electronic inductor control, form the reactor of inductance value electronically with Lr (μ H).Therefore, with the inductance value Lw addition of above-mentioned reactor WL, the built-in equivalent reactance device of the source of welding current with inductance value of Lw+Lr.For example be set to Lw=30 μ H, Lr=200 μ H.Lw be the variation that is to quicken peak point current Ip of the reason of little value can be to welding in stable conditionization.On the other hand, during the short circuit and during short circuit prevents once more among the Th, slow down welding current Iw variation can enough make the welded condition stabilisation, the electronic inductor control that therefore is used in the Lr that forms big value is moved.
The predetermined high peak current setting signal HIpr of high peak current initialization circuit HIPR output.The predetermined amplitude setting signal Wsr of amplitude setting circuit WSR output.The predetermined vibration period setting signal Tsr of vibration period initialization circuit TSR output.The predetermined dutycycle setting signal Dsr of dutycycle initialization circuit DSR output.Peak point current initialization circuit IPR with above-mentioned high peak current setting signal HIpr, above-mentioned amplitude setting signal Wsr, above-mentioned vibration period setting signal Tsr, above-mentioned dutycycle setting signal Dsr and above-mentioned during switch-over control signal St as input, output time point of switch-over control signal St=5 (Tp between the peak period) during be changed to begins synchronously to begin the wavy peak point current setting signal Ipr of rectangle shown in Figure 1 that vibrates.Current error amplifying circuit EI amplifies output current error amplification signal Ei to the error between this peak point current setting signal Ipr and the above-mentioned welding current detection signal Id.Commutation circuit SW with switch-over control signal St during above-mentioned, above-mentioned current error amplifying signal Ei and above-mentioned voltage error amplifying signal Ev as input, during be switched to a side during switch-over control signal St=1～4 (Tb during the base value), output voltage error amplifying signal Ev is as error amplification signal Ea, be switched to the b side during St=5 (Tp between the peak period), output current error amplification signal Ei is as error amplification signal Ea.Thus, become constant current control between the peak period among the Tp, become constant voltage control during the base value among the Tb.Afterwards, constitute the welding current Iw of circulation Fig. 1, output weldingvoltage Vw by above-mentioned circuit.
According to above-mentioned embodiment; adopting with the carbon dioxide is in the carbon dioxide pulse arc welding method of protective gas of principal component; be provided with between the peak period with base value during; vibrate by the peak point current in making between the peak period; molten drop is formed roughly desired size, and the molten drop that can make this formation carries out short circuiting transfer in during base value.Therefore, can realize 1 pulse period, 1 droplet transfer state, therefore the few high quality welding of generation that can carry out sputter.Especially during the high-speed welding in the galvanic areas more than 200A, connect method with the CO2 welding of direct current and compare the generation that can further suppress sputter, also can improve the welding bead outward appearance.
Claims (9)
1. carbon dioxide pulse arc welding method; use is with the protective gas of carbon dioxide as principal component; the feeding welding wire; and weld repeatedly as 1 pulse period between the peak period of the peak point current that will circulate and during the base value of circulation background current; this carbon dioxide pulse arc welding method is characterised in that
In between the above-mentioned peak period above-mentioned peak point current is carried out constant current control, and the front end at welding wire forms molten drop by above-mentioned peak point current is vibrated,
The molten drop that makes this formation by short circuiting transfer in during the above-mentioned base value is to the fusion pool transition,
Control and carry out the long control of electric arc by the weldingvoltage in during the above-mentioned base value being carried out constant voltage.
2. carbon dioxide pulse arc welding method according to claim 1 is characterized in that,
The amplitude of the above-mentioned peak point current that vibrates and vibration period are set to the overheated and sputter thing value of dispersing of the molten drop from form not that suppresses molten drop.
3. according to claim 1 or 2 described carbon dioxide pulse arc welding methods, it is characterized in that,
The waveform of the above-mentioned peak point current that vibrates is that rectangle is wavy.
4. according to each described carbon dioxide pulse arc welding method in the claim 1～3, it is characterized in that,
Between the above-mentioned peak period for during setting according to the feed speed of welding wire.
5. according to each described carbon dioxide pulse arc welding method in the claim 1～4, it is characterized in that,
During the above-mentioned base value for carry out continuation before the short circuiting transfer during.
6. according to each described carbon dioxide pulse arc welding method in the claim 1～4, it is characterized in that,
During the short circuit standby before being taken place by short circuit during the above-mentioned base value and then the molten drop during this short circuit standby carries out forming during the short circuit of short circuiting transfer,
The 1st background current that middle circulation is determined by arc load during the above-mentioned short circuit standby, middle circulation begins along with effluxion the 2nd background current of increase gradually from the value of above-mentioned the 1st background current during the above-mentioned short circuit.
7. according to each described carbon dioxide pulse arc welding method in the claim 1～4, it is characterized in that,
During the short circuit standby before taking place by short circuit during the above-mentioned base value, then the molten drop during this short circuit standby carry out during the short circuit of short circuiting transfer and then during this short circuit prevent that electric arc is short-circuited after taking place once more once more predetermined form during short circuit prevents once more
The 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current that increases gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, above-mentioned once more during short circuit prevents in circulation 3rd background current bigger than the value of above-mentioned the 1st background current.
8. according to each described carbon dioxide pulse arc welding method in the claim 1～4, it is characterized in that,
During the short circuit standby before taking place by short circuit during the above-mentioned base value, then the molten drop during this short circuit standby carry out during the short circuit of short circuiting transfer and then the predetermined timing period during this short circuit form,
The 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current that increases gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, the 4th little background current of value of above-mentioned the 2nd background current of the end time point of circulation during than above-mentioned short circuit in the above-mentioned timing period.
9. according to each described carbon dioxide pulse arc welding method in the claim 1～4, it is characterized in that,
During the short circuit standby before taking place by short circuit during the above-mentioned base value, during then the molten drop during this short circuit standby carries out the short circuit of short circuiting transfer, then predetermined during short circuit prevents once more and then this predetermined timing period during short circuit prevents once more that prevents that electric arc is short-circuited after taking place once more once more during this short circuit forms
The 1st background current that circulation is determined by arc load in during the above-mentioned short circuit standby, circulation begins along with effluxion the 2nd background current of increase gradually from the value of above-mentioned the 1st background current in during the above-mentioned short circuit, above-mentioned once more during short circuit prevents in circulation 3rd background current bigger than the value of above-mentioned the 1st background current, the 4th little background current of value of above-mentioned the 2nd background current of the end time point of circulation during in the above-mentioned timing period than above-mentioned short circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009225699A JP2011073022A (en) | 2009-09-30 | 2009-09-30 | Carbon dioxide pulsed arc welding method |
| JP2009-225699 | 2009-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102029460A true CN102029460A (en) | 2011-04-27 |
| CN102029460B CN102029460B (en) | 2015-01-21 |
Family
ID=43883212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010288232.3A Active CN102029460B (en) | 2009-09-30 | 2010-09-19 | Pulsed arc welding method of carbon oxide |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011073022A (en) |
| CN (1) | CN102029460B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151946A (en) * | 2011-05-17 | 2011-08-17 | 太原市星云焊接设备有限公司 | Pulse gas shielded base-value current transition control method |
| CN102861969A (en) * | 2011-07-05 | 2013-01-09 | 株式会社大亨 | Welding device |
| CN103567604A (en) * | 2012-07-25 | 2014-02-12 | 株式会社大亨 | Method of controlling pulse arc welding |
| CN104057177A (en) * | 2014-07-09 | 2014-09-24 | 上海威特力焊接设备制造股份有限公司 | Control circuit for short circuiting transfer welding |
| CN105921860A (en) * | 2015-02-27 | 2016-09-07 | 株式会社神户制钢所 | Arc Welding Method, Arc Welding Apparatus, And Arc Welding Controller |
| CN107350606A (en) * | 2017-08-23 | 2017-11-17 | 唐山松下产业机器有限公司 | Pulse controlled method and electric welding machine |
| CN108890082A (en) * | 2018-07-19 | 2018-11-27 | 唐山松下产业机器有限公司 | Arc welding control method and device and welding equipment |
| CN111001902A (en) * | 2020-03-09 | 2020-04-14 | 杭州凯尔达电焊机有限公司 | Welding control circuit and alternating current welding power supply |
| CN111902234A (en) * | 2018-03-28 | 2020-11-06 | 株式会社神户制钢所 | Method and device for controlling gas-shielded arc welding |
| CN111975174A (en) * | 2020-07-21 | 2020-11-24 | 华南理工大学 | Double-wire pulse MIG welding droplet resonance transition control method |
| CN112004631A (en) * | 2018-04-18 | 2020-11-27 | 松下知识产权经营株式会社 | Arc welding control method |
| CN112743193A (en) * | 2019-10-29 | 2021-05-04 | 株式会社达谊恒 | Arc welding method |
| CN113226615A (en) * | 2018-12-27 | 2021-08-06 | 弗罗纽斯国际有限公司 | Method for controlling a welding process with a consumable electrode and welding device with such a control device |
| CN113843477A (en) * | 2021-10-25 | 2021-12-28 | 天津新松机器人自动化有限公司 | Robot monofilament welding and filling method |
| CN114641364A (en) * | 2019-11-04 | 2022-06-17 | 弗罗纽斯国际有限公司 | Method and apparatus for welding a weld |
| CN114654048A (en) * | 2020-12-23 | 2022-06-24 | 林肯环球股份有限公司 | Hybrid injection and flow pulse welding |
| CN114789285A (en) * | 2022-04-22 | 2022-07-26 | 深圳市爱达思技术有限公司 | Welding waveform generation method, device, equipment and storage medium |
| CN114939710A (en) * | 2022-06-15 | 2022-08-26 | 辽宁新远特种焊接技术有限公司 | Method for promoting falling of short-circuit transition molten drops in carbon dioxide gas shielded welding |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6145694B2 (en) * | 2013-01-24 | 2017-06-14 | パナソニックＩｐマネジメント株式会社 | Arc welding control method and arc welding apparatus |
| CN104493329B (en) * | 2014-11-20 | 2016-08-31 | 上海沪临重工有限公司 | Back chipping backing weld method is exempted from a kind of modulation pulse |
| JP2016168612A (en) * | 2015-03-13 | 2016-09-23 | 日新製鋼株式会社 | ARC WELDING METHOD AND WELDING MEMBER FOR MOLTEN Zn BASED PLATED STEEL PLATE EXCELLENT IN WELDING APPEARANCE AND WELDING STRENGTH |
| CN110049844B (en) | 2017-01-24 | 2021-04-06 | 株式会社达谊恒 | Arc welding control method |
| US20200122262A1 (en) * | 2018-10-19 | 2020-04-23 | Illinois Tool Works Inc. | Systems and methods for voltage control of a short circuit during a pulse welding process |
| CN114682885B (en) * | 2022-03-31 | 2024-01-09 | 深圳市爱达思技术有限公司 | Welding method, device, welding equipment and medium for consumable electrode gas shielded welding |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187175A (en) * | 1981-05-14 | 1982-11-17 | Mitsubishi Electric Corp | Pulse arc welding method |
| JP3163519B2 (en) * | 1993-06-23 | 2001-05-08 | 松下電器産業株式会社 | Gas shielded arc welding method for galvanized steel sheet and its welding machine |
| JP3188821B2 (en) * | 1995-05-15 | 2001-07-16 | 株式会社神戸製鋼所 | Mag pulse arc welding method for galvanized steel sheet |
| CN1672852A (en) * | 2004-03-25 | 2005-09-28 | 株式会社大亨 | Consumable electrode gas protection arc welding method with constant current performance |
| JP2005313179A (en) * | 2004-04-27 | 2005-11-10 | Daihen Corp | Welding method interchanging dc arc welding and pulse arc welding and controlling heat input |
| CN1962147A (en) * | 2005-11-08 | 2007-05-16 | 株式会社神户制钢所 | Pulsed arc welding method |
| CN101032778A (en) * | 2006-03-10 | 2007-09-12 | 株式会社神户制钢所 | Pulsed arc welding method |
-
2009
- 2009-09-30 JP JP2009225699A patent/JP2011073022A/en active Pending
-
2010
- 2010-09-19 CN CN201010288232.3A patent/CN102029460B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187175A (en) * | 1981-05-14 | 1982-11-17 | Mitsubishi Electric Corp | Pulse arc welding method |
| JP3163519B2 (en) * | 1993-06-23 | 2001-05-08 | 松下電器産業株式会社 | Gas shielded arc welding method for galvanized steel sheet and its welding machine |
| JP3188821B2 (en) * | 1995-05-15 | 2001-07-16 | 株式会社神戸製鋼所 | Mag pulse arc welding method for galvanized steel sheet |
| CN1672852A (en) * | 2004-03-25 | 2005-09-28 | 株式会社大亨 | Consumable electrode gas protection arc welding method with constant current performance |
| JP2005313179A (en) * | 2004-04-27 | 2005-11-10 | Daihen Corp | Welding method interchanging dc arc welding and pulse arc welding and controlling heat input |
| CN1962147A (en) * | 2005-11-08 | 2007-05-16 | 株式会社神户制钢所 | Pulsed arc welding method |
| CN101032778A (en) * | 2006-03-10 | 2007-09-12 | 株式会社神户制钢所 | Pulsed arc welding method |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151946A (en) * | 2011-05-17 | 2011-08-17 | 太原市星云焊接设备有限公司 | Pulse gas shielded base-value current transition control method |
| CN102861969A (en) * | 2011-07-05 | 2013-01-09 | 株式会社大亨 | Welding device |
| CN102861969B (en) * | 2011-07-05 | 2015-11-18 | 株式会社大亨 | Welder |
| CN103567604A (en) * | 2012-07-25 | 2014-02-12 | 株式会社大亨 | Method of controlling pulse arc welding |
| CN103567604B (en) * | 2012-07-25 | 2016-08-17 | 株式会社大亨 | Pulse arc welding control method |
| CN104057177A (en) * | 2014-07-09 | 2014-09-24 | 上海威特力焊接设备制造股份有限公司 | Control circuit for short circuiting transfer welding |
| CN105921860B (en) * | 2015-02-27 | 2019-03-22 | 株式会社神户制钢所 | Arc-welding method, arc-welding apparatus and arc welding control device |
| CN105921860A (en) * | 2015-02-27 | 2016-09-07 | 株式会社神户制钢所 | Arc Welding Method, Arc Welding Apparatus, And Arc Welding Controller |
| CN107350606A (en) * | 2017-08-23 | 2017-11-17 | 唐山松下产业机器有限公司 | Pulse controlled method and electric welding machine |
| CN111902234A (en) * | 2018-03-28 | 2020-11-06 | 株式会社神户制钢所 | Method and device for controlling gas-shielded arc welding |
| CN112004631A (en) * | 2018-04-18 | 2020-11-27 | 松下知识产权经营株式会社 | Arc welding control method |
| CN112004631B (en) * | 2018-04-18 | 2023-10-17 | 松下知识产权经营株式会社 | Arc welding control method |
| CN108890082A (en) * | 2018-07-19 | 2018-11-27 | 唐山松下产业机器有限公司 | Arc welding control method and device and welding equipment |
| CN113226615B (en) * | 2018-12-27 | 2023-04-28 | 弗罗纽斯国际有限公司 | Method for controlling a welding process with a consumable electrode and welding device having such a control device |
| CN113226615A (en) * | 2018-12-27 | 2021-08-06 | 弗罗纽斯国际有限公司 | Method for controlling a welding process with a consumable electrode and welding device with such a control device |
| CN112743193A (en) * | 2019-10-29 | 2021-05-04 | 株式会社达谊恒 | Arc welding method |
| CN114641364A (en) * | 2019-11-04 | 2022-06-17 | 弗罗纽斯国际有限公司 | Method and apparatus for welding a weld |
| CN111001902B (en) * | 2020-03-09 | 2020-07-07 | 杭州凯尔达电焊机有限公司 | Welding control circuit and alternating current welding power supply |
| CN111001902A (en) * | 2020-03-09 | 2020-04-14 | 杭州凯尔达电焊机有限公司 | Welding control circuit and alternating current welding power supply |
| CN111975174A (en) * | 2020-07-21 | 2020-11-24 | 华南理工大学 | Double-wire pulse MIG welding droplet resonance transition control method |
| CN111975174B (en) * | 2020-07-21 | 2021-12-21 | 华南理工大学 | Double-wire pulse MIG welding droplet resonance transition control method |
| CN114654048A (en) * | 2020-12-23 | 2022-06-24 | 林肯环球股份有限公司 | Hybrid injection and flow pulse welding |
| CN113843477A (en) * | 2021-10-25 | 2021-12-28 | 天津新松机器人自动化有限公司 | Robot monofilament welding and filling method |
| CN113843477B (en) * | 2021-10-25 | 2022-10-25 | 天津新松机器人自动化有限公司 | Robot monofilament welding and filling method |
| CN114789285A (en) * | 2022-04-22 | 2022-07-26 | 深圳市爱达思技术有限公司 | Welding waveform generation method, device, equipment and storage medium |
| CN114789285B (en) * | 2022-04-22 | 2023-12-05 | 深圳市爱达思技术有限公司 | Welding waveform generation method, device, equipment and storage medium |
| CN114939710A (en) * | 2022-06-15 | 2022-08-26 | 辽宁新远特种焊接技术有限公司 | Method for promoting falling of short-circuit transition molten drops in carbon dioxide gas shielded welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011073022A (en) | 2011-04-14 |
| CN102029460B (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102029460B (en) | Pulsed arc welding method of carbon oxide | |
| JP4846898B2 (en) | AC pulse arc welding control method and welding power source apparatus | |
| RU2500510C2 (en) | Method of changing welding process in welding (versions) and method of feeding heat prior to welding | |
| KR102056043B1 (en) | Arc-welding method and arc-welding apparatus | |
| US8338750B2 (en) | AC pulse arc welding control method | |
| CN102626814B (en) | Welder and carbon dioxide arc welding method | |
| WO2015110895A1 (en) | Method of and systems for additive manufacturing using high energy source and hot-wire with pulsed heating signals | |
| CN102794549B (en) | Welder | |
| CN112770859B (en) | Welding power supply, welding system, control method of welding power supply, and storage medium | |
| CN102922088B (en) | Double-wire welding control method | |
| CN102430840B (en) | AC pulse arc welding control method | |
| JP2011088209A (en) | Carbon dioxide pulsed arc welding method | |
| CN102126077B (en) | Plasma metal inert gas arc welding method | |
| CN102756197A (en) | Welding current control method in short circuit period | |
| CN103418888A (en) | Method for controlling ac pulse electric arc welding | |
| CN115397597B (en) | Welding power supply, welding system, control method of welding power supply, and storage medium | |
| CN103084705A (en) | Current control method during necking detection of fusion electrode electric arc welding | |
| CN109922915B (en) | Arc welding method and arc welding device | |
| JP2019188434A (en) | Control method of ac arc-welding | |
| US20230142671A1 (en) | Welding or additive manufacturing system with discontinuous electrode feeding | |
| JP2011110600A (en) | Plasma mig welding method | |
| WO2023042565A1 (en) | Welding control method, welding control device, welding power supply, welding system, program, welding method, and additive manufacturing method | |
| Choudhary et al. | A Study on Metal Transfer Mechanism in Gas Metal Arc Welding | |
| JP2000254779A (en) | Method and machine for ac pulse arc welding | |
| Paul | Practical study of inclusiveness properties of PI and SMC ideas for control of GMAW |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |