CN108555421A - A kind of droplet transfer control device and its control method based on pulse matching electrode TIG - Google Patents
A kind of droplet transfer control device and its control method based on pulse matching electrode TIG Download PDFInfo
- Publication number
- CN108555421A CN108555421A CN201810285368.5A CN201810285368A CN108555421A CN 108555421 A CN108555421 A CN 108555421A CN 201810285368 A CN201810285368 A CN 201810285368A CN 108555421 A CN108555421 A CN 108555421A
- Authority
- CN
- China
- Prior art keywords
- welding
- current
- tig
- pulse
- tungsten electrode
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
- B23K9/1675—Arc welding or cutting making use of shielding gas and of a non-consumable electrode making use of several electrodes
Abstract
The purpose of the present invention is to provide the present invention to propose a kind of droplet transfer control device and its control method based on pulse matching electrode TIG, it uses double tungsten electrodes and controllably shunts coupled arc, can by two tungsten electrodes implement different size of current, impulse modulation, spatial position synergistic effect, welding wire across coupled arc center is heated, drives molten drop separation and transition, combine electromagnetic force, surface tension (heat), gravity, plasma jet power, and the controllable modulation of force direction is combined, realize droplet transfer control to integrate.Different from traditional by the control of single movement mechanics or thermal control, and traditional concept of the normal melting pole electrical arc weldering droplet transfer dependent on size of current is broken, new means is provided for the active control of droplet transfer.
Description
Technical field
The present invention relates to a kind of welder and its welding methods.
Background technology
The welding qualities such as form, droplet shape and the transition frequency of droplet transfer have important influence, control welding
Droplet transfer process is one of the important channel for realizing welding quality optimization.Studies have shown that the form and interim form of molten drop are not
Only to the scope of application important of welding procedure, the Temperature Distribution of electric arc, the heat distribution of workpiece are had an effect on, to
It is maintained close ties with the problems of welded quality such as welding process stability, the tissue crystals of weld seam and mechanical property, welding residual stress；
Secondly, interim form, droplet shape and the transition frequency of molten drop also decide face of weld roughness, appearance of weld precision and
The size of spatter.
Normal melting pole electrical arc weldering, since wire melting and interim form are directly related with size of current, wire melting speed
Degree and droplet transfer are difficult independent control；Although cold metal transfer (CMT) technology realizes the stabilization droplet transfer under low current,
But it is only limitted to short circuiting transfer form, equally exists wire melting and the interim form problem directly related with size of current；It is non-molten
Change pole electrical arc weldering (TIG) technology and there is the problems such as wire feed position is limited, deposition efficiency is low again.
Invention content
The purpose of the present invention is to provide based on raising appearance of weld precision, reduction heat input, control droplet transfer isogonism
Spend a kind of the droplet transfer control device and its control method based on pulse matching electrode TIG considered.
The object of the present invention is achieved like this：
A kind of droplet transfer control device based on pulse matching electrode TIG of the present invention, it is characterized in that：Including
One TIG Arc Welding Powers, the 2nd TIG Arc Welding Powers, the first tungsten electrode, the second tungsten electrode, IGBT diverter modules, the detection of the first current signal
Device, the second current signal detecting device, the cathode of the first TIG Arc Welding Powers are connected with the first tungsten electrode, the 2nd TIG Arc Welding Powers
Cathode be connected with the second tungsten electrode, the anode of the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers connect with workpiece, and composition is welded
Connect current loop；The anode that welding tip passes through IGBT diverter modules and the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers
It is connected, constitutes partial flow bypass path, the first current signal detecting device detects the current impulse of the first tungsten electrode, the detection of the second current signal
Device detects the current impulse of welding wire.
A kind of droplet transfer control method based on pulse matching electrode TIG of the present invention, it is characterized in that：Using power
Profit requires a kind of droplet transfer control device based on pulse matching electrode TIG described in 1：
(1) the double-tungsten argon arc welding gun being made of the first tungsten electrode, the second tungsten electrode, wire-feed motor is placed in welding section start, it is double
Tungsten argon arc welding gun is vertical with workpiece；
(2) setting pulse peak current, background current, arc voltage, shield gas flow rate, pulse frequency, movement speed,
Before welding, current pulse frequency, the duty ratio of the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers are set as consistent；
(3) in welding process, the electric arc impulse waveform of the first tungsten electrode is detected using the first current signal detecting device, works as inspection
When measuring the electric current of its electric arc and being in pulse base value, the current impulse of the second tungsten electrode is adjusted to by arteries and veins by pulse matching controller
Rush peak value；When detecting that the voltage of the first tungsten electrode is in peak value of pulse, by pulse matching controller by the electricity of the second tungsten electrode
Stream pulse regulation is base value, is repeated the above process, until welding terminates.
Advantage of the invention is that：
1, in the welding process, using the pulse frequency of two pulse TIG power supplys of method and regulation and control of pulse matching control
To promote the transition of molten drop, it is beautiful to can get forming for the transformation realized the short circuit liquid bridge of molten drop, penetrate the interim forms such as drop and jet stream
It sees, weld defect is few, the high welding point of weldquality.
2, welding wire is sent into symmetrical double tungsten electrode centers in a manner of TOPTIG, does not have directionality compared to TIG paraxonic wire feeds,
Increase the flexibility of welding；It is not associated with electric current compared to MIG wires feed rate, is conducive to the control of appearance of weld.And lead to
Crossing the form of adjustment coupled arc makes coupled arc sectional area variable gradient reduce, and realizes the more uniform molten drop of electromagnetic force
Transition is more steady, is conducive to accurately control molten drop transition.
3, welding wire can be shunted while tungsten electrode and base material constitute main road, adjusted by IGBT diverter modules and flowed into mother
The size of material electric current is realized and is accurately controlled to base material heat input, and the heat affected area of base material is made to narrow, and reduces the change of component
Shape reduces the process of correction deformation, while also reducing production cost, be a kind of low_input_power, efficiently weld skill
Art.
4, equipment is simple, strong applicability, can be used for the droplet transfer control of the welding of different metal material.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is molten drop Force principle schematic diagram；
Fig. 3 is the first TIG Arc Welding Power pulsed current signal schematic diagrames；
Fig. 4 is the 2nd TIG Arc Welding Power pulsed current signal schematic diagrames.
Specific implementation mode
It illustrates below in conjunction with the accompanying drawings and the present invention is described in more detail：
In conjunction with Fig. 1-4, welder of the present invention is by double-tungsten argon arc welding gun 3, tungsten argon arc power supply 1 and 7, wire-feed motor 4, electricity
Flow the compositions such as signal detector 12 and 14, signal processor (PLC or microcontroller) 10, signal controller 9, IGBT diverter modules 8.
When welding, 1 cathode of TIG Arc Welding Powers is connected with tungsten electrode 2, and 7 cathode of TIG Arc Welding Powers is connected with tungsten electrode 6,1 He of TIG Arc Welding Powers
7 anode is connect with workpiece 13, and welding tip is connected by IGBT diverter modules 8 with TIG Arc Welding Power anodes.In this way, TIG
Arc Welding Power 1 connects tungsten electrode with 7 cathode, and anode connection workpiece 13 constitutes TIG weld electricity current loop；Welding tip further through
IGBT diverter modules are connected arcing heated filament or partial flow bypass path with TIG Arc Welding Powers, to improve wire melting efficiency, reduce female
Material heat input and heat affected area.In welding process, is detected respectively by current signal detecting device 12 and 14 and flow through welding wire and one
The current impulse of side tungsten electrode, and coordination control is carried out to the current pulse signal of two tungsten electrodes by pulse matching controller 11, into
And realize the dynamic arc composite welding between double tungsten electrode TOPTIG, by-pass shunt melt pole electrical arc, it realizes efficient, accurate molten
Drop control.
Steps are as follows for the droplet transfer control method of pulse matching electrode TIG based on present embodiment：
Step 1:Workpiece 13 to be welded installation positioning is ready, double-tungsten argon arc welding gun is placed in welding section start, welding gun with
Workpiece is vertical.Mode connecting welding experimental facilities and device as shown in Figure 1.
Step 2：According to welding process requirement, the adjustment location of workpiece, welding gun and the parameters such as workpiece spacing and angle.According to weldering
Requirement is connect, setting pulse peak current, background current, arc voltage, shield gas flow rate, pulse frequency, movement speed etc. is respectively
Item welding condition.Before welding, by TIG Arc Welding Powers 1 with 7 current pulse frequency, duty ratio be set as consistent.
Step 3：In welding process, the electric arc impulse waveform of side tungsten electrode is detected using current signal detector 14, works as inspection
When measuring the electric current of its electric arc and being in pulse base value, by pulse matching controller 11 by the other side without current impulse be adjusted to arteries and veins
Peak value is rushed, when detecting that the voltage of its electric arc is in peak value of pulse, by pulse matching controller by the current impulse of the other side
It is adjusted to base value, repeatedly.By the way that the power frequency and amplitude of tungsten electrode arc pulse is arranged, realize to mode of metal transfer standard
Really, efficient control.
The present invention is by two pulse TIG power supplys, IGBT diverter modules, wire feeder, double-tungsten argon arc welding gun and its pulse
The compositions such as coordinated control system.Two tungsten electrodes of double-tungsten argon arc welding gun are connected with the cathode of two pulse TIG power supplys respectively, and two
The platform source of welding current is connected by signal detection and control system again.In the welding process, the method controlled using pulse matching,
I.e. when a TIG welding gun arc current is in pulse base value arc maintenance, start pulse signal controller adjusts another TIG welderings
Rifle arc current is in peak value of pulse arc maintenance, and the coupled magnetic field that two tungsten electrodes are formed is dominated by being in peak value side, melted to whereabouts
Drop generates repulsion, makes it to the tungsten electrode offset in base value side.After the Peak of current pulse valley alternating of tungsten electrode, magnetic field side
To also changing, make repulsion of the molten drop by opposite direction.When the frequency of square-wave pulse is sufficiently high, the coupling between two tungsten electrodes
Magnetic field positive and negative alternate is sufficiently fast, and molten drop would not control offset but directly fall, to achieve the effect that control the droplet transfer.
Wherein, welding wire is sent into symmetrical double tungsten electrode centers in a manner of TOPTIG, does not have directionality compared to TIG paraxonic wire feeds, compares
It is not associated with electric current in MIG wires feed rate, and the formation of coupled arc has conducive to being accurately controlled to the droplet transfer；Pulse
TIG power supply total currents flow through double-tungsten argon arc welding gun, and welding wire is shunted while TOPTIG welding guns constitute main road with workpiece,
The electric current for flowing through main road tungsten electrode when welding is set to be divided into two parts:A part is the electric current by by-pass reversion pulse TIG power supplys,
Another part is that the electric current being applied on base material preheats welding wire using electric arc heated filament technology to improve deposition rate,
To the heat input mistake of base material while increase of weld current improves the burn-off rate of welding wire when can solve high-speed welding in this way
High contradiction, to improve the precision of welding point.Moreover, the method uses direct current pulse power source, equipment is simple, reduces weldering
The cost connect is a kind of high efficiency, the too low control new technology of molten drop of low cost.
Claims (2)
1. a kind of droplet transfer control device based on pulse matching electrode TIG, it is characterized in that：Including the first TIG arc-welding
Power supply, the 2nd TIG Arc Welding Powers, the first tungsten electrode, the second tungsten electrode, IGBT diverter modules, the first current signal detecting device, second
The cathode of current signal detecting device, the first TIG Arc Welding Powers is connected with the first tungsten electrode, the cathode of the 2nd TIG Arc Welding Powers with
Second tungsten electrode is connected, and the anode of the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers is connect with workpiece, constitutes welding current and returns
Road；Welding tip is connected by IGBT diverter modules with the anode of the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers, structure
At partial flow bypass path, the first current signal detecting device detects the current impulse of the first tungsten electrode, the inspection of the second current signal detecting device
Survey the current impulse of welding wire.
2. a kind of droplet transfer control method based on pulse matching electrode TIG, it is characterized in that：Using claim 1 institute
A kind of droplet transfer control device based on pulse matching electrode TIG stated：
(1) the double-tungsten argon arc welding gun being made of the first tungsten electrode, the second tungsten electrode, wire-feed motor is placed in welding section start, double tungsten electrodes
Argon-arc welding gun is vertical with workpiece；
(2) pulse peak current, background current, arc voltage, shield gas flow rate, pulse frequency, movement speed, welding are set
Before, current pulse frequency, the duty ratio of the first TIG Arc Welding Powers and the 2nd TIG Arc Welding Powers are set as consistent；
(3) in welding process, the electric arc impulse waveform of the first tungsten electrode is detected using the first current signal detecting device, when detecting
When the electric current of its electric arc is in pulse base value, the current impulse of the second tungsten electrode is adjusted to by pulse peak by pulse matching controller
Value；When detecting that the voltage of the first tungsten electrode is in peak value of pulse, by pulse matching controller by the electric current arteries and veins of the second tungsten electrode
Punching is adjusted to base value, repeats the above process, until welding terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285368.5A CN108555421B (en) | 2018-04-03 | 2018-04-03 | Molten drop transition control device based on pulse coordination double-tungsten-electrode argon arc welding and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285368.5A CN108555421B (en) | 2018-04-03 | 2018-04-03 | Molten drop transition control device based on pulse coordination double-tungsten-electrode argon arc welding and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108555421A true CN108555421A (en) | 2018-09-21 |
| CN108555421B CN108555421B (en) | 2020-06-16 |
Family
ID=63533803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810285368.5A Active CN108555421B (en) | 2018-04-03 | 2018-04-03 | Molten drop transition control device based on pulse coordination double-tungsten-electrode argon arc welding and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108555421B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365965A (en) * | 2018-11-23 | 2019-02-22 | 哈尔滨工程大学 | The Welding Molten Drop interim process control equipment and control method coordinated based on the double tungsten electrodes of superaudio pulse |
| CN110091038A (en) * | 2019-04-28 | 2019-08-06 | 江苏航运职业技术学院 | A kind of multipurpose mariages narrow clearance welding gun |
| CN110961625A (en) * | 2019-11-15 | 2020-04-07 | 山东大学 | Novel molten metal 3D printing device and method based on arc heat source |
| CN111168198A (en) * | 2020-01-08 | 2020-05-19 | 湘潭大学 | Welding seam tracking sensor for controlling double-tungsten-electrode arc swing by magnetic field |
| CN113732444A (en) * | 2021-10-18 | 2021-12-03 | 兰州理工大学 | Precise forming method and precise forming system in TIG electric arc additive manufacturing process |
| CN114178546A (en) * | 2021-11-25 | 2022-03-15 | 清华大学 | Method and device for monitoring transition state of deposited molten drops of dual-channel electron beam fuse |
| CN115415639A (en) * | 2022-09-06 | 2022-12-02 | 上海工程技术大学 | Surface deposition method based on double-tungsten-electrode coordinated control swing arc |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270037A (en) * | 1979-11-09 | 1981-05-26 | Grinin Vladimir V | Arc welding machine using non-consumable electrode |
| CN101530943A (en) * | 2009-04-23 | 2009-09-16 | 哈尔滨工程大学 | Bypass shunt double-sided arc welding device and welding method |
| CN103567652A (en) * | 2013-11-14 | 2014-02-12 | 哈尔滨工程大学 | Aluminum alloy direct current plasma-tungsten electrode argon arc hybrid welding method based on pulse coordination control |
| CN103737158A (en) * | 2013-12-31 | 2014-04-23 | 哈尔滨工程大学 | Thermal input control based electric arc welding gun with double consumable electrodes and welding method thereof |
| CN104148785A (en) * | 2014-08-07 | 2014-11-19 | 哈尔滨工程大学 | Controllable shunt double-tungsten electrode coupling electric arc welding gun device based on center filler wire and welding method thereof |
| CN107138832A (en) * | 2017-06-22 | 2017-09-08 | 西南交通大学 | The double GTA auxiliary GMA increasing material manufacturing method and system of stainless steel component |
-
2018
- 2018-04-03 CN CN201810285368.5A patent/CN108555421B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270037A (en) * | 1979-11-09 | 1981-05-26 | Grinin Vladimir V | Arc welding machine using non-consumable electrode |
| CN101530943A (en) * | 2009-04-23 | 2009-09-16 | 哈尔滨工程大学 | Bypass shunt double-sided arc welding device and welding method |
| CN103567652A (en) * | 2013-11-14 | 2014-02-12 | 哈尔滨工程大学 | Aluminum alloy direct current plasma-tungsten electrode argon arc hybrid welding method based on pulse coordination control |
| CN103737158A (en) * | 2013-12-31 | 2014-04-23 | 哈尔滨工程大学 | Thermal input control based electric arc welding gun with double consumable electrodes and welding method thereof |
| CN104148785A (en) * | 2014-08-07 | 2014-11-19 | 哈尔滨工程大学 | Controllable shunt double-tungsten electrode coupling electric arc welding gun device based on center filler wire and welding method thereof |
| CN107138832A (en) * | 2017-06-22 | 2017-09-08 | 西南交通大学 | The double GTA auxiliary GMA increasing material manufacturing method and system of stainless steel component |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365965A (en) * | 2018-11-23 | 2019-02-22 | 哈尔滨工程大学 | The Welding Molten Drop interim process control equipment and control method coordinated based on the double tungsten electrodes of superaudio pulse |
| CN110091038A (en) * | 2019-04-28 | 2019-08-06 | 江苏航运职业技术学院 | A kind of multipurpose mariages narrow clearance welding gun |
| CN110961625A (en) * | 2019-11-15 | 2020-04-07 | 山东大学 | Novel molten metal 3D printing device and method based on arc heat source |
| CN111168198A (en) * | 2020-01-08 | 2020-05-19 | 湘潭大学 | Welding seam tracking sensor for controlling double-tungsten-electrode arc swing by magnetic field |
| CN113732444A (en) * | 2021-10-18 | 2021-12-03 | 兰州理工大学 | Precise forming method and precise forming system in TIG electric arc additive manufacturing process |
| CN114178546A (en) * | 2021-11-25 | 2022-03-15 | 清华大学 | Method and device for monitoring transition state of deposited molten drops of dual-channel electron beam fuse |
| CN115415639A (en) * | 2022-09-06 | 2022-12-02 | 上海工程技术大学 | Surface deposition method based on double-tungsten-electrode coordinated control swing arc |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108555421B (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108555421A (en) | A kind of droplet transfer control device and its control method based on pulse matching electrode TIG | |
| CN104493368B (en) | Plasma-melting electrode electric arc dynamic composite welding device and welding method thereof | |
| CN107107233B (en) | The control method of arc welding | |
| CN206578445U (en) | A kind of pair of thermal source hybrid welding torch and double thermal source composite welding systems | |
| US9457420B2 (en) | Gas tungsten arc welding with cross AC arcing twin wires | |
| US5932121A (en) | Welding method in the overhead and vertical positions | |
| CN109365965B (en) | Welding molten drop transition control equipment and control method based on superaudio pulse double-tungsten electrode coordination | |
| CN108581156A (en) | Double tungsten electrode plasma arc welding (PAW) connection devices based on center heated filament and welding method | |
| CN102626814B (en) | Welder and carbon dioxide arc welding method | |
| CA2712473A1 (en) | Method and system to increase heat input to a weld during a short-circuit arc welding process | |
| CN106914708B (en) | Laser twin-wire indirect arc composite welding apparatus and wire feed rate predict calculation method | |
| CN105562894B (en) | A kind of device using the auxiliary MIG welding of pulse TIG electric arcs and the welding method using device realization | |
| CN103071935A (en) | Laser-arc composite welding device based on heat input control and welding method | |
| CN103341681B (en) | Multi-state double-wire electrical arc welding device and welding method | |
| CN103521885A (en) | Welding method with indirect arc between double welding wires alternately changed to form by-pass arc | |
| WO2018145543A1 (en) | Dual heat source hybrid welding torch and welding method | |
| CN101870032A (en) | Molten drop timed and forced short-circuiting transfer control method in large-current CO2 welding process | |
| CN101530943A (en) | Bypass shunt double-sided arc welding device and welding method | |
| CN105269124B (en) | A kind of fuse tungsten argon arc soldering method | |
| CN204353659U (en) | Plasma-melt pole electrical arc dynamic complex welder | |
| CN104209631B (en) | A kind of consumable electrode arc welding control device | |
| US20230182225A1 (en) | Arc welding, cladding, and additive manufacturing method and apparatus | |
| US20140131334A1 (en) | Gas tungsten arc welding using arcing-wire | |
| CN107297561B (en) | A kind of heated filament welding equipment | |
| CN105149732A (en) | Consumable electrode welder and welding method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |