CN109420822A - Pulse arc welding control method - Google Patents
Pulse arc welding control method Download PDFInfo
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- CN109420822A CN109420822A CN201810899870.5A CN201810899870A CN109420822A CN 109420822 A CN109420822 A CN 109420822A CN 201810899870 A CN201810899870 A CN 201810899870A CN 109420822 A CN109420822 A CN 109420822A
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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
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
- B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
- B23K9/092—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits characterised by the shape of the pulses produced
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- Arc Welding Control (AREA)
Abstract
The present invention provides a kind of pulse arc welding control method.The generation of splashing is reduced in the pulse electric arc welding of low current value.Rise in (Tu) from background current value (Ib) to peak current value (Ip) during rising, become peak current value (Ip) in (Tp) during peak value, (the Td1 during decline, Td2 decline in) from peak current value (Ip) to background current value (Ib), become background current value (Ib) in (Tb) during base value, such welding current (Iw) is connected to be welded, in such pulse arc welding control method, welding current (Iw) during rising in (Tu) rises, change rate is allowed to become smaller at any time, it is made of during decline (Td2) during (Td1) during the 1st decline and the 2nd decline, welding current (Iw) during 1st decline in (Td1) linearly declines, welding current during 2nd decline in (Td2) (Iw) decline, the absolute value of change rate is allowed to become smaller at any time, during the absolute value of the change rate of welding current (Iw) declines in (Td1) greater than the 2nd during the 1st decline in (Td2).
Description
Technical field
The present invention relates to pulse arc welding control method, welding wire is fed, connects welding current to be welded, the weldering
Connect electric current during rising in from background current value to peak current value rise, during peak value in become the peak point current
Value, during decline in decline from the peak current value to the background current value, during base value in as the base value
Current value.
Background technique
Self-consuming electrode type pulse electric arc welding is widely used in the welding of steel, stainless steel etc..In the pulse arc welding
In connecing, during rising in from background current value to peak current value rise, during peak value in become peak current value, under
Decline in during drop from peak current value to background current value, during base value in become background current value, connect such weldering
Electric current is connect, these were powered as 1 pulse period and is repeated, to be welded.In pulse electric arc welding, due to 1 pulse
Period becomes 1 droplet transfer state, therefore the droplet transfer is in stable condition, so that the generation splashed is few, can obtain beautiful welding bead
Appearance.
The variation for making the welding current in during rising and during decline can be passed through by describing in the invention of patent document 1
Welding performance is promoted for curve-like.
Existing technical literature
Patent document
Patent document 1:JP special open 2006-75890 bulletin
In pulse electric arc welding, with 150A degree low current value below welding thin plate, in, it is big
The case where current value is welded is compared, and arc length is set to short.If arc length is set to short, just has and be easy to generate
Welding wire and the short-circuit, more of base material lead to the problem of splashing.Especially since the welding wire of stainless steel than steel welding wire viscosity more
By force, therefore the tendency becomes significant.
Summary of the invention
Thus in the present invention, it is therefore intended that, splashing can be reduced in the pulse electric arc welding of low current value by, which providing, generates
The pulse arc welding control method of amount.
In order to solve above-mentioned problem, the invention of technical solution 1 is a kind of pulse arc welding control method, feeding weldering
Silk is connected welding current and is welded, the welding current during rising in rise from background current value to peak current value,
During peak value become the peak current value, during decline in from the peak current value to the background current value under
Drop, during base value in become the background current value, the pulse arc welding control method is characterized in that, the rising
The welding current in period rises, and change rate is allowed to become smaller at any time, by during the 1st decline and under the 2nd during the decline
Constituted during drop, it is described 1st decline during in the welding current linearly decline, it is described 2nd decline during in it is described
Welding current decline, allows the absolute value of change rate to become smaller at any time, the absolute value of the change rate of the welding current is the described 1st
It is greater than in during the 2nd decline in during decline.
The invention of technical solution 2 is characterized in that on the basis of the pulse arc welding control method that technical solution 1 is recorded, institute
It is the 2nd decline phase during dropping to predetermined reference current value from the peak current value during stating the 1st decline
Between be during dropping to the background current value from the reference current value.
On the basis of pulse arc welding control method of the invention of technical solution 3 described in any one of technical solution 1~2
It is characterized in that, the time span during the peak value is set as 0.3ms or less.
On the basis of pulse arc welding control method of the invention of technical solution 4 described in any one of technical solution 1~3
It is characterized in that, the absolute value of change rate of the welding current in during the 1st decline is set as 500A/ms or more.
On the basis of pulse arc welding control method of the invention of technical solution 5 described in any one of technical solution 1~4
It is characterized in that, the peak current value is bigger, the reference current value is set to smaller.
On the basis of pulse arc welding control method of the invention of technical solution 6 described in any one of technical solution 1~5
It is characterized in that the viscosity of the welding wire is bigger, the reference current value is set to smaller.
The effect of invention
According to the present invention, splashing yield can be reduced in the pulse electric arc welding of low current value.
Detailed description of the invention
Fig. 1 is the current-voltage waveform for indicating pulse arc welding control method involved in embodiments of the present invention 1
Figure.
Fig. 2 is the welder of pulse arc welding control method involved in embodiment 1 for carrying out the present invention
Block diagram.
Fig. 3 is the welder of pulse arc welding control method involved in embodiment 2 for carrying out the present invention
Block diagram.
Fig. 4 is the welder of pulse arc welding control method involved in embodiment 3 for carrying out the present invention
Block diagram.
The explanation of appended drawing reference
1 welding wire
2 base materials
3 electric arcs
4 welding torches
5 feed rolls
DV driving circuit
Dv driving signal
EI current error amplifying circuit
Ei current error amplified signal
EV voltage error amplifying circuit
Ev voltage error amplified signal
FC feeds control circuit
Fc feeding control signal
FR feed speed initialization circuit
Fr feed speed setting signal
Ib background current value
IBR background current initialization circuit
Ibr peak point current setting signal
ID current detection circuit
Id current detection signal
Ip peak current value
IPR peak point current initialization circuit
Ipr peak point current setting signal
IR current setting circuit
Ir electric current setting signal
It reference current value
ITR reference current initialization circuit
Itr reference current setting signal
The 2nd reference current initialization circuit of ITR2
The 3rd reference current initialization circuit of ITR3
Iw welding current
MC electric power main circuit
On enabling signal
The PS source of welding current
RC robot controller
During Tb base value
During Td1 the 1st declines
Initialization circuit during TD1R the 1st declines
Setting signal during Td1r the 1st declines
During Td2 the 2nd declines
Initialization circuit during TD2R the 2nd declines
Setting signal during Td2r the 2nd declines
The Tf pulse period (signal)
During Tp peak value
Initialization circuit during TPR peak value
Setting signal during Tpr peak value
During Tu rises
Initialization circuit during TUR rises
Setting signal during Tur rises
VAV average voltage circuit
Vav average voltage signal
VD voltage detecting circuit
Vd voltage detection signal
VF V/F converter
VR voltage setting circuit
Vr voltage setting signal
Vw weldingvoltage
WL reactor
WM feed motor
WS welding wire type selection circuit
Ws welding wire type selection signal
Specific embodiment
Illustrate embodiments of the present invention below with reference to attached drawing.
[embodiment 1]
Fig. 1 is the current-voltage waveform for indicating pulse arc welding control method involved in embodiments of the present invention 1
Figure.(A) of the figure indicates the time change of welding current Iw, and (B) of the figure indicates the time change of weldingvoltage Vw.Join below
The figure is examined to illustrate to act.
In the figure, become Tu during rising during moment t1~t2, during becoming peak value during moment t2~t3
Become Td during declining during Tp, moment t3~t4, becomes Tb during base value during moment t4~t5.Moment t1~t5's
Period becomes 1 pulse period Tf.During rising during Tu, peak value Tp and decline during Td be configured to given value.The base value phase
Between Tb by aftermentioned arc length control the moment variation.As a result, also the moment changes pulse period Tf.In this explanation
In book, the size of the change rate of welding current Iw refers to the size of the absolute value of change rate.
During the rising of moment t1~t2 in Tu, as shown in (A) of the figure, welding current Iw is from background current value
Ib rises to peak current value Ip, and change rate is allowed to become smaller at any time.Background current value Ib and peak current value Ip is given value.
As shown in (B) of the figure, weldingvoltage Vw becomes the waveform with current waveform similar figures, becomes directly proportional to arc length
Voltage value.
During the peak value of moment t2~t3 in Tp, as shown in (A) of the figure, welding current Iw becomes peak point current
Value Ip.As shown in (B) of the figure, weldingvoltage Vw becomes the peak voltage directly proportional to arc length.
Td is by dropping to predetermined reference current value It's from peak current value Ip during the decline of moment t3~t4
1st decline during Td1 and from reference current value It drop to background current value Ib the 2nd decline during Td2 constitute.Ib < It <
Ip.During the change rate of welding current Iw declines in Td1 greater than the 2nd during the 1st decline in Td2.During 1st decline in Td1
Welding current Iw linearly decline.Welding current Iw decline during 2nd decline in Td2, allows change rate to become smaller at any time.Such as
Shown in (B) of the figure like that, weldingvoltage Vw becomes the waveform with current waveform similar figures, becomes directly proportional to arc length
Voltage value.
During the base value of moment t4~t5 in Tb, as shown in (A) of the figure, welding current Iw becomes background current
Value Ib.As shown in (B) of the figure, weldingvoltage Vw becomes the base value voltage value directly proportional to arc length.
To during base value Tb (pulse period Tf) carry out feedback control so that the average value of weldingvoltage Vw and predefine
Voltage setting value it is equal.Since the average value of weldingvoltage Vw is directly proportional to average arc length, which will
Arc length control becomes given value.The control is referred to as arc length control thus.
Td during Tp, decline during Tu, peak value during rising and peak current value Ip are set as given value, so that molten
Dripping transition state becomes good.
Illustrate the function and effect of present embodiment below.Pass through function and effect described below, in the present embodiment, energy
Carry out that splashing yield is few, plate sheet welding of high-quality in the pulse electric arc welding in low current value.
(function and effect 1), which pass through, reduces the change rate of the welding current Iw during rising in Tu at any time, will not be to mother
Material sharply gives excessive heat input and excessive arc pressure.As a result, the burn-through of thin plate can be inhibited.
The change rate of (function and effect 2) by the welding current Iw during increasing the 1st decline in Td1, the generation position of electric arc
The front end for being passed to welding wire is set, is become smaller from electric arc to the heat input of welding wire, it is suppressed that welding wire softening.Thus without becoming, dissolved drip is thin
The long shape extended, becomes the shape close to sphere.As a result, the generation of short circuit can be inhibited.
(function and effect 3) can be protected by reducing the change rate of the welding current Iw during the 2nd decline in Td2 at any time
It holds the directive property of electric arc and electric arc is inhibited to be biased to.If under the change rate and the 1st for making the welding current Iw during the 2nd decline in Td2
Td1 is equally big during drop, will lose the directive property of electric arc sharply to which electric arc is easy to be biased to.Thus, it is possible to inhibit electric arc to generate shape
State becomes unstable.
And then welding performance can be made to be promoted like that by following.
(function and effect 4) are by being set as 0.3ms for the time span of Tp during peak value hereinafter, can make above-mentioned function and effect
1 more really.That is, heat input and arc pressure to base material can be made smaller, it can more reliably inhibit the burn-through of thin plate.
(function and effect 5) by by the change rate of the welding current Iw during the 1st decline in Td1 be set as 500A/ms with
On, above-mentioned function and effect 2 can be made more really.That is, certainly inhibiting as the elongate shape of dissolved drip, so as to more
Add the generation for inhibiting short circuit.
The numerical example of above-mentioned each parameter described below.Tu=2ms, Tp=0.2ms, Td=2.3ms, Ip=400A, Ib
=40A, It=100A.
Fig. 2 is the welder for pulse arc welding control method involved in real-time embodiments of the present invention 1
Block diagram.The main source of welding current PS, robot controller RC, robot (diagram omit) by being surrounded by dotted line of welder
Deng composition.Illustrate each side's block below with reference to the figure.
Source of welding current PS is made of each square below.3 phase 200V etc. are exchanged source power supply (diagram by electric power main circuit MC
Omit) as input, the outputs such as inverter control are carried out according to aftermentioned driving signal Dv and are controlled, and output is suitable for the welding of welding
Voltage Vw and welding current Iw.Though illustration omitted, electric power main circuit MC has: being rectified to exchange source power supply
No. 1 rectification circuit；By the smooth capacitor of rectified direct current；Smoothed direct current is transformed into high frequency according to driving signal Dv
The inverter circuit of exchange；High-frequency ac is depressured to the contravariant transformer of the voltage value suitable for welding；To the high-frequency ac of decompression
No. 2 rectification circuits rectified.Reactance WL be inserted into above-mentioned electric power main circuit MC+side output welding torch 4 between, will be electric
The output smoothing of source main circuit MC.
Welding wire 1 is fed by being rotated in welding torch 4 for feed rolls 5 coupled with feed motor WM, and with base material 2
Between generate electric arc 3.Feed motor WM and welding torch 4 are equipped on robot.To in welding torch 4 for sparking plug (diagram is omitted) with
Apply weldingvoltage Vw between base material 2, connects welding current Iw.
Voltage detecting circuit VD detects above-mentioned weldingvoltage Vw, voltage sense signal Vd.Average voltage circuit
Voltage detection signal Vd is equalized (passing through low-pass filter) and output voltage average signal Vav by VAV.Voltage setting circuit
The voltage setting signal Vr of VR output desired value.Voltage error amplifying circuit EV by above-mentioned voltage setting signal Vr (+) with
The error of above-mentioned average voltage signal Vav (-) is amplified, and output voltage error amplified signal Ev.
V/F converter VF becomes short time high level with rate-adaptive pacemaker corresponding with above-mentioned voltage error amplified signal Ev
Trigger signal, that is, pulse-period signal Tf.The period that pulse-period signal Tf becomes short time high level becomes 1 pulse week
Phase.
Initialization circuit TUR exports setting signal Tur during predetermined rising during rising.Initialization circuit during peak value
TPR exports setting signal Tpr during predetermined peak value.Initialization circuit TD1R output the predetermined 1st during 1st decline
Setting signal Tdlr during decline.Setting signal during predetermined 2nd decline of initialization circuit TD2R output during 2nd decline
Td2r。
Peak point current initialization circuit IPR exports predetermined peak point current setting signal Ipr.Background current initialization circuit
IBR exports predetermined background current setting signal Ibr.Reference current initialization circuit ITR exports predetermined benchmark electricity
Flow setting signal Itr.
Current setting circuit IR is by setting signal Tur during above-mentioned pulse-period signal Tf, above-mentioned rising, above-mentioned
Setting signal during setting signal Td1r, the above-mentioned the 2nd decline during setting signal Tpr, the 1st above-mentioned decline during peak value
Td2r, above-mentioned peak point current setting signal Ipr, above-mentioned background current setting signal Ibr and above-mentioned reference current are set
Signal Itr is determined as input, whenever pulse-period signal Tf is changing into short time high level, just carries out processing below, is exported
Electric current setting signal Ir.
If 1) pulse-period signal Tf variation is high level, by setting signal Tur is determined during rising rising stage
Between electric current setting signal Ir is exported in Tu, which rises to peak value from the value of background current setting signal Ibr
The value of electric current setting signal Ipr, allows change rate to become smaller at any time.
2) next, during by setting signal Tpr is determined during peak value peak value in Tp, output peak point current setting letter
Number Ipr is as electric current setting signal Ir.
3) next, output electric current is set in Td1 during the 1st decline determined by setting signal Td1r during the 1st decline
Determine signal Ir, which linearly drops to reference current setting letter from the value of peak point current setting signal Ipr
The value of number Itr.
4) next, output electric current is set in Td2 during the 2nd decline determined by setting signal Td2r during the 2nd decline
Determine signal Ir, electric current is made to drop to the value of background current setting signal Ibr from the value of reference current setting signal Itr, allows variation
Rate becomes smaller at any time.
5) next, during base value until pulse-period signal Tf becomes short time high level once again in Tb,
Background current setting signal Ibr is exported as electric current setting signal Ir.
Current detection circuit ID detects above-mentioned welding current Iw, output electric current measure signal Id.Current error amplification electricity
Road EI amplifies the error of above-mentioned electric current setting signal Ir (+) and above-mentioned current detection signal Id (-), and exports electric current mistake
Poor amplified signal Ei.
Driving circuit DV is by above-mentioned current error amplified signal Ei and from aftermentioned robot controller RC's
Enabling signal On as input, enabling signal On be high level (welding starts) when, based on current error amplified signal Ei into
The control of row PWM modulation, exports the driving signal Dv for driving the inverter circuit in above-mentioned electric power main circuit MC, believes in starting
Not output drive signal Dv when number On is low level (welding stops).
Feed speed initialization circuit FR exports predetermined feed speed setting signal Fr.Feeding control circuit FC will be upper
The feed speed setting signal Fr stated and the enabling signal On from aftermentioned robot controller RC are being opened as input
When dynamic signal On is high electricity dry (welding starts), by being used for not determine the feed speed feeding weldering that signal Fr is determined by feed speed
The feeding control signal Fc of silk 1 is exported to above-mentioned feed motor WM, when enabling signal On is low level (welding stops),
Feeding of the output for feed-disabling controls signal Fc.
Robot controller RC keeps robot (diagram is omitted) mobile according to the operation procedure of preparatory teaching, and exports and refer to
Enable the enabling signal On that welding starts or welding stops.
[embodiment 2]
In the invention of embodiment 2, peak current value is bigger, reference current value is set to smaller.
Fig. 3 is the welder for pulse arc welding control method involved in real-time embodiments of the present invention 2
Block diagram.The figure is corresponding with Fig. 2, marks same appended drawing reference to same square, their explanation is not repeated.It, will in the figure
The reference current initialization circuit ITR of Fig. 2 is replaced as the 2nd reference current initialization circuit ITR2.Illustrate this below with reference to the figure
Square.
2nd reference current initialization circuit ITR2 output is by being the pre- of input with above-mentioned peak point current setting signal Ipr
The first reference current setting signal Itr that determining reference current value enumeration function calculates.The reference current value enumeration function is preparatory
It is defined by testing, the value of peak point current setting signal Ipr is bigger, then the value of reference current setting signal Itr is smaller.Such as
Itr=230-Ipr × 0.3.
Indicate the current-voltage wave in Fig. 3 of pulse arc welding control method involved in embodiments of the present invention 2
Shape figure is same as above-mentioned Fig. 1.But reference current value It corresponds to peak current value Ip and changes this point difference.
By changing reference current value It corresponding to peak current value Ip, other than the effect of embodiment 1, also rise
To following such effect.In the function and effect 2 of above-mentioned embodiment 1, if peak current value Ip becomes larger, dissolved drip is elongated
The tendency that ground extends will become strong.For this purpose, it is smaller to get over ambassador's reference current value It by peak current value Ip, more strongly inhibit
Dissolved drip becomes elongate shape, can become the shape close to sphere.As a result, can more reliably inhibit short circuit
It generates.
[embodiment 3]
In the invention of embodiment 3, the viscosity of welding wire is bigger, reference current value is set to smaller.
Fig. 4 is the welder of pulse arc welding control method involved in embodiment 3 for carrying out the present invention
Block diagram.The figure is corresponding with Fig. 3, marks same appended drawing reference to same square, their explanation is not repeated.The figure is in Fig. 2
On the basis of added welding wire type selection circuit WS, by the 2nd reference current initialization circuit ITR2 of Fig. 3 be replaced as the 3rd benchmark electricity
Flow initialization circuit ITR3.Illustrate these squares below with reference to the figure.
Welding wire type selection circuit WS is the switch selected by welding operator according to the type of welding wire, exports welding wire type
Selection signal Ws, the signal becomes 1 if selecting steel, if selection stainless steel signal becomes 2.
3rd reference current initialization circuit ITR3, by above-mentioned peak point current setting signal Ipr and above-mentioned welding wire type
Selection signal Ws is as input, and in welding wire type selection signal Ws=2 (stainless steel), output passes through above-mentioned reference current value
The reference current setting signal Itr that enumeration function calculates, in welding wire type selection signal Ws=1 (steel), output is to passing through
The value that above-mentioned reference current value enumeration function calculates is worth plus obtained from given value, as reference current setting signal Itr.
Such as given value is 50A.When the material of welding wire is stainless steel, compared with when material is steel, the viscosity of welding wire is bigger.Cause
This, the viscosity of welding wire is bigger, reference current value It is set to smaller.
Indicate the current-voltage wave in Fig. 3 of pulse arc welding control method involved in embodiments of the present invention 3
Shape figure, it is same as above-mentioned Fig. 1.But reference current value It corresponds to the viscosity of peak current value Ip and welding wire and changes this point
It is different.
By making reference current value It correspond to the viscosity change of peak current value Ip and welding wire, in addition to embodiment 2
Effect other than, also act as following such effect.In the function and effect 2 of above-mentioned embodiment 1, if the viscosity of welding wire becomes
Greatly, then the tendency that dissolved drip slenderly extends becomes strong.For this purpose, it is smaller to get over ambassador's reference current value It by the viscosity of welding wire, it is stronger
Ground inhibits dissolved drip to become elongate shape, can be closer to sphere.As a result, can more reliably inhibit the production of short circuit
It is raw.In the sticky hour of welding wire, the directive property of electric arc is kept strongly by increasing reference current value It, electric arc can be inhibited to produce
Raw state becomes unstable.
Claims (6)
1. a kind of pulse arc welding control method,
Feed welding wire, connect welding current and welded, the welding current during rising in from background current value to peak value
Current value rises, during peak value in become the peak current value, during decline in from the peak current value to described
Background current value decline, during base value in become the background current value,
The pulse arc welding control method is characterized in that,
The welding current in during the rising rises, and change rate is allowed to become smaller at any time,
By being constituted during the 1st decline and during the 2nd decline during the decline,
It is described 1st decline during in the welding current linearly decline, it is described 2nd decline during in the welding current
Decline, allows the absolute value of change rate to become smaller at any time,
The absolute value of the change rate of the welding current it is described 1st decline during in be greater than it is described 2nd decline during in.
2. pulse arc welding control method according to claim 1, which is characterized in that
It is the during dropping to predetermined reference current value from the peak current value the described 2nd during 1st decline
It is during dropping to the background current value from the reference current value during decline.
3. pulse arc welding control method according to claim 1 or 2, which is characterized in that
Time span during the peak value is set as 0.3ms or less.
4. pulse arc welding control method described in any one of claim 1 to 3, which is characterized in that
The absolute value of the change rate of the welding current in during described 1st is declined is set as 500A/ms or more.
5. pulse arc welding control method according to any one of claims 1 to 4, which is characterized in that
The peak current value is bigger, the reference current value is set to smaller.
6. pulse arc welding control method according to any one of claims 1 to 5, which is characterized in that
The viscosity of the welding wire is bigger, the reference current value is set to smaller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-166574 | 2017-08-31 | ||
| JP2017166574A JP6941410B2 (en) | 2017-08-31 | 2017-08-31 | Pulse arc welding control method |
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| Publication Number | Publication Date |
|---|---|
| CN109420822A true CN109420822A (en) | 2019-03-05 |
| CN109420822B CN109420822B (en) | 2022-03-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62192264A (en) * | 1986-02-19 | 1987-08-22 | Hitachi Seiko Ltd | Pulse arc welding power source |
| JP2009214148A (en) * | 2008-03-11 | 2009-09-24 | Daido Steel Co Ltd | Consumable-electrode type pulse arc welding method |
| JP2013184216A (en) * | 2012-03-09 | 2013-09-19 | Kobe Steel Ltd | Solid wire and gas shielded arc welding method using the same |
| CN103567604A (en) * | 2012-07-25 | 2014-02-12 | 株式会社大亨 | Method of controlling pulse arc welding |
| CN104768694A (en) * | 2012-11-09 | 2015-07-08 | 林肯环球股份有限公司 | Method of detecting detachment of a droplet from a wire during a welding operation |
| CN105008079A (en) * | 2013-03-14 | 2015-10-28 | 伊利诺斯工具制品有限公司 | Electrode negative pulse welding system and method |
-
2017
- 2017-08-31 JP JP2017166574A patent/JP6941410B2/en active Active
-
2018
- 2018-08-08 CN CN201810899870.5A patent/CN109420822B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62192264A (en) * | 1986-02-19 | 1987-08-22 | Hitachi Seiko Ltd | Pulse arc welding power source |
| JP2009214148A (en) * | 2008-03-11 | 2009-09-24 | Daido Steel Co Ltd | Consumable-electrode type pulse arc welding method |
| JP2013184216A (en) * | 2012-03-09 | 2013-09-19 | Kobe Steel Ltd | Solid wire and gas shielded arc welding method using the same |
| CN103567604A (en) * | 2012-07-25 | 2014-02-12 | 株式会社大亨 | Method of controlling pulse arc welding |
| CN104768694A (en) * | 2012-11-09 | 2015-07-08 | 林肯环球股份有限公司 | Method of detecting detachment of a droplet from a wire during a welding operation |
| CN105008079A (en) * | 2013-03-14 | 2015-10-28 | 伊利诺斯工具制品有限公司 | Electrode negative pulse welding system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6941410B2 (en) | 2021-09-29 |
| JP2019042754A (en) | 2019-03-22 |
| CN109420822B (en) | 2022-03-01 |
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