CN106312264B - The hybrid welding torch and its welding method of pulse MIC welding and TIG weldering - Google Patents
The hybrid welding torch and its welding method of pulse MIC welding and TIG weldering Download PDFInfo
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- CN106312264B CN106312264B CN201610933911.9A CN201610933911A CN106312264B CN 106312264 B CN106312264 B CN 106312264B CN 201610933911 A CN201610933911 A CN 201610933911A CN 106312264 B CN106312264 B CN 106312264B
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- welding
- arc
- tig
- tungsten electrode
- wire
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- 238000003466 welding Methods 0.000 title claims abstract description 193
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010937 tungsten Substances 0.000 claims abstract description 46
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 46
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 238000010891 electric arc Methods 0.000 claims description 62
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004070 electrodeposition Methods 0.000 claims description 2
- 230000009916 joint effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- WLTSUBTXQJEURO-UHFFFAOYSA-N thorium tungsten Chemical compound [W].[Th] WLTSUBTXQJEURO-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B23K9/16—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
Abstract
The present invention relates to the hybrid welding torch and its welding method of a kind of pulse MIC welding and TIG weldering; its hybrid welding torch includes TIG torch body, tungsten electrode and protective gas nozzle; the two sides of tungsten electrode are symmetrical arranged welding tip; welding wire passes through welding tip; the outer cover of welding wire and welding tip is equipped with welding wire electric conductor; dielectric isolation layer is equipped between welding wire electric conductor and torch body; the center line of welding tip intersects at a point with tungsten electrode center line, and welding wire center line is parallel with tungsten electrode tip contour line.The present invention is heated using composite arc, is accelerated the fusing of welding wire, is improved welding efficiency, while reducing the lance body structure of composite arc, increases flexibility, therefore be well suited for robot welding.
Description
Technical field
The invention belongs to welding technology fields, are NEW TYPE OF COMPOSITE electric arc and welding technique, and in particular to welding torch construction
With welding arc control technology, synergic-pulsed MIG welding and TIG are welded to integrated process.
Background technique
In welding field, pulse arc welding and TIG weldering all have distinguishing feature.TIG has arc stability, electric arc heated collection
In advantage, the shortcomings that existing simultaneously low efficiency.Melt pole electrical arc is welded in protective gas and arc length and consumable electrode
In the case that material is different, there is the different mode of metal transfer of characteristic remarkable, and thus generate different appearance of weld and weldering
Stitch performance.Pulse MIC is welded to obtain spray transfer in very big current range, and axial direction is good, is splashed small, is adapted to full position
Welding is set, high quality, the development of high efficiency welding procedure is greatly facilitated in the advantage of appearance of weld beauty.With robot
It is fast-developing with widely apply, consumable electrode arc welding is using more and more in robot welding, rather than consumable electrode arc welding application is then
Relatively fewer, the reason is that non-melt pole arc-welding needs special welding wire feed mechanism in the welding process, this will certainly make machine
Device people's operating flexibility reduces, and the load of executing agency is made to increase its running precision of influence.To overcome the problems, such as this, French liquid
Missing solder meets group SAF and develops a kind of novel TIG welding gun TopeTIG, it is characterized in that the wire feed position welded TIG is changed,
It is formed as shown in Figure 1.Although this mode solves the problems, such as certain, but there is also the spaces being improved for welding efficiency.
Summary of the invention
The present invention is further based on the design feature of TopeTIG welding gun for above-mentioned problems of the prior art
The welding efficiency for improving argon tungsten-arc welding proposes a kind of pulse MIC electric arc and TIG electric arc to be combined together to form Combined Welding
Torch.
It is another object of the present invention to provide a kind of welding methods of the compound arc welding of pulse.
Technical scheme is as follows:
The two sides of hybrid welding torch, including TIG torch body, tungsten electrode and protective gas nozzle, tungsten electrode are symmetrical arranged weldering
Silk ignition tip, welding wire pass through welding tip, and the outer cover of welding wire and welding tip is equipped with welding wire electric conductor, welding wire electric conductor
Dielectric isolation layer is equipped between torch body, center line and the tungsten electrode center line of welding tip intersect at a point, and weld
Silk center line is parallel with tungsten electrode tip contour line.
The tungsten electrode outer sheath is equipped with high-temperature insulation set.
Welding method of the invention includes the following steps:
After weldment is ready and alignment tungsten electrode starting the arc position, opens TIG weldering power supply and ignite electric arc；Before striking,
It needs by protecting gas circuit to be passed through protective gas to welding region in advance；After the air for excluding welding region, in tungsten electrode and work
Apply high-frequency and high-voltage between part to ignite TIG electric arc, when TIG arc burning and after form molten bath, starts to be sent into double welding wires and start
Pulsed MIG Welding Power Source；After double welding wires enter TIG arc zone, double welding wires will be melted by TIG electric arc heated, while welded
MIG pulsed arc will be generated between silk end and workpiece；In the welding process, because TIG and MIG arc current is same direction electric current
It generates pinch effect and electric arc is made to be collected as a whole electric arc, and the entirety electric arc will heat base metals simultaneously and send
Into wire melting formed welding pool metal；When welding stopping, it is first turned off MIG welding gun, welding wire stops being sent into, MIG welding
Electric current, which enters, receives the arc stage, and at this moment double welding wires continue to melt under the heating of TIG electric arc and dry extension of electrode degree is made to become smaller, and
TIG electric arc will continue to burn；After further turning off TIG arc welding gun switch, TIG arc current decaying make molten bath Slow cooling until
It is final to extinguish.
Advantages of the present invention effect is as follows:
It is heated using composite arc, accelerates the fusing of welding wire, improve welding efficiency, while reducing composite arc
Lance body structure increases flexibility, therefore is well suited for robot welding.
Detailed description of the invention
Fig. 1 is Tope TIG welding gun structure schematic diagram in the prior art.
Fig. 2 is composite arc rifle structural schematic diagram of the present invention.
In Fig. 2,1- welding wire electric conductor；2- dielectric isolation layer；3- high-temperature insulation set；4- composite arc；5- welding wire；6- welding wire
Ignition tip；7- protective gas nozzle；8- tungsten electrode；9-TIG torch body；10- tungsten electrode conductive clip；11- base material；12- protects gas
Body；13- tradition wire feed position.
Specific embodiment
Embodiment
As shown in Fig. 2, hybrid welding torch, including TIG torch body 9, tungsten electrode 8 and protective gas nozzle 7, outside tungsten electrode 8
Side is set with high-temperature insulation set 3；The two sides of tungsten electrode 8 are symmetrical arranged welding tip 6, and welding wire 5 passes through welding tip 6, weldering
Silk and welding tip outer cover be equipped with welding wire electric conductor 1, between welding wire electric conductor 1 and TIG torch body 9 be equipped with insulation every
Absciss layer 2, center line and the tungsten electrode center line of welding tip intersect at a point, and welding wire center line and tungsten electrode tip profile
Line is parallel；It ensure that two welding wire MIG electric arcs and TIG electric arc form a whole composite arc 4.
The torch body is equipped with the water-cooling structure of protective gas argon gas pipeline and gun body, to guarantee the good of welding process
The cooling of good protection and gun body itself.For the welding wire conveying for realizing different-diameter, need correspondingly to can be carried out welding tip 6
Replacement.
Welding method of the invention includes the following steps:
After weldment is ready and alignment tungsten electrode starting the arc position, opens TIG weldering power supply and ignite electric arc；Before striking,
It needs by protecting gas circuit to be passed through protective gas to welding region in advance；After the air for excluding welding region, in tungsten electrode and work
Apply high-frequency and high-voltage between part to ignite TIG electric arc, when TIG arc burning and after form molten bath, starts to be sent into double welding wires and start
Pulsed MIG Welding Power Source；After double welding wires enter TIG arc zone, double welding wires will be melted by TIG electric arc heated, while welded
MIG electric arc will be generated between silk end and workpiece；In the welding process, because TIG and MIG arc current is the generation of same direction electric current
Pinch effect and so that electric arc is collected as a whole electric arc, and the entirety electric arc will heat base metals and feeding simultaneously
Wire melting forms welding pool metal.When welding stopping, it is first turned off MIG welding gun, welding wire stops being sent into, MIG welding current
Into the arc stage is received, at this moment double welding wires can continue to melt under the heating of TIG electric arc and dry extension of electrode degree is made to become smaller, and TIG
Electric arc will continue to burn；After further turning off TIG welding gun, the decaying of TIG arc current makes molten bath Slow cooling until finally putting out
It goes out.
The arc maintenance of composite arc is TIG electric arc, and power supply need to be using the source of welding current for being suitble to TIG weld characteristic；Welding wire electricity
Arc is pulse MIC welding, using the source of welding current of suitable pulse.Needing the control of two sources of welding current all has 4T operating function,
There is striking, welding current, receive arc and stop four processes and corresponding adjusting.
Welding procedure implementation process:
(1) source of welding current line is connected, tungsten electrode connects cathode, and welding wire connects cathode, and weldment connects anode, forms straight polarity direct current method.
(2) recirculated cooling water is connected, guarantees that water flow is normal.
(3) protective gas pipeline is connected, guarantees that gas circuit leakproofness is good.
(4) and ignition tip is selected according to gage of wire and is correctly installed.
(5) adjustment welding wire mechanism makes double welding wire ends close to tungsten electrode end.
(6) weldment prepares and assembling, the trend and height of adjustment tungsten electrode position and mariages make tungsten electrode threshold value workpiece table
2~3mm of face, mariages can determine horizontally-arranged or tandem according to the width and requirement for height of weld seam.
(7) it ignites after tungsten electrode arc, then promotion electric arc height to 4~6mm or so starts wire feeding motor and is sent into welding wire,
The unbalanced pulse MIG source of welding current carries out the welding of setting welding variables simultaneously.
(8) at the end of welding, MIG arc welding gun switch is turned off, welding wire stops being sent into, while MIG electric arc enters receipts arc decaying rank
Section, when stem elongation degree shortens into OFF state welding wire in the case where receiving arc current and TIG electric arc heated.Continuing to certain time
Afterwards, TIG arc welding gun switch is turned off, TIG arc burning, which enters, receives the arc stage until last arc extinction.
Composite arc welding gun is that two are added in the main structure of TIG welding gun using tungsten electrode as the wire feed of symmetrical centre conduction
Mouth and corresponding accessory, as shown in Figure 2.In welding, dystectic pure tungsten material or tungsten alloy (cerium object or thorium tungsten etc.) and workpiece
Generate an arc maintenance electric arc；It is then sent into the filler wire of certain speed in two symmetrical ignition tips, is generated between welding wire and workpiece
Melt pole electrical arc.Composite arc of the invention can also use general T IG and two MIG in addition to using special special welding gun
Welding gun combination is implemented, this needs special fixture to combine three welding guns according to certain angle, to realize the weldering after combination
Rifle can be realized three electric arcs and gather to form common electric arc and molten bath, need the nozzle of TIG and MIG welding gun using larger
Draw ratio.
Composite arc welding procedure be weldment it is ready and alignment tungsten electrode starting the arc position after, open TIG weldering
Power supply ignites electric arc.Before striking, need by protecting gas circuit to be passed through protective gas to welding region in advance.Excluding welding section
After the air in domain, applies high-frequency and high-voltage between tungsten electrode and workpiece and ignite TIG electric arc, when TIG arc burning certain time and shape
Behind molten bath, start to be sent into double welding wires and the starting impulse MIG source of welding current.After double welding wires enter TIG arc zone, double welding wires
It will be melted by TIG electric arc heated, while MIG electric arc will be generated between welding wire end and workpiece.In the welding process, because of TIG and
MIG arc current is that same direction electric current generates pinch effect and electric arc is made to be collected as a whole electric arc, and the entirety
The wire melting for heating base metals and feeding simultaneously is formed welding pool metal by electric arc.When welding stopping, it is first turned off MIG
Welding gun, welding wire stop being sent into, and MIG welding current, which enters, receives the arc stage, and at this moment double welding wires can continue to melt under the heating of TIG electric arc
Change and dry extension of electrode degree is made to become smaller, and TIG electric arc will continue to burn.After further unclamping TIG arc welding gun switch, TIG electric arc
Current attenuation makes molten bath Slow cooling until final extinguish.
It mutual insulating and is powered by different electrical power in arc burning, between tungsten electrode and double welding wires, double welding wires are using adjustable
The pulse power of parameter is powered, therefore the current potential of welding head will carry out different variations, during cored arc stops, only
The TIG electric arc generated between tungsten electrode and workpiece；During pulse, TIG electric arc meeting firing pulse electric arc, welding wire is by pulsed arc and TIG
Electric arc melts after heating jointly, and such TIG electric arc becomes arc maintenance, and it is pulsed arc that welding wire, which generates electric arc,.In the welding process, because
TIG and MIG arc current is that same direction electric current generates pinch effect and electric arc is made to be collected as a whole electric arc, and is somebody's turn to do
The wire melting for heating base metals and feeding simultaneously is formed welding pool metal by whole electric arc.Since tungsten electrode and welding wire are distinguished
Powered by independent current source, the distribution of electric current between two MIG electric arcs be the arc length that is determined according to the fusing situation of welding wire into
Row is coordinated itself, and the heat that three electric arcs (+one TIG electric arc of two MIG electric arc) generate is then the joint effect that is superimposed
The fusing of welding wire and the formation in molten bath.Simultaneously to avoid forming serial arc between welding wire and tungsten electrode, add on tungsten electrode stem elongation degree
Fill high-temperature insulation set.And the electrode basic structure for forming this composite pulse electric arc is consumable electrode+tungsten electrode+consumable electrode, therefore,
This welding arc is called P-MTM electric arc.
Claims (1)
1. the complex welding method of pulse MIC welding and TIG weldering,
Hybrid welding torch includes TIG torch body, tungsten electrode and protective gas nozzle, and it is conductive that the two sides of tungsten electrode are symmetrical arranged welding wire
Mouth, welding wire pass through welding tip, and the outer cover of welding wire and welding tip is equipped with welding wire electric conductor, welding wire electric conductor and welding gun
Dielectric isolation layer is equipped between main body, center line and the tungsten electrode center line of welding tip intersect at a point, and welding wire center
Line is parallel with tungsten electrode tip contour line；It ensure that two welding wire MIG electric arcs and TIG electric arc form a whole composite arc；
The tungsten electrode outer sheath is equipped with high-temperature insulation set；
It is characterized by comprising following step:
After weldment is ready and alignment tungsten electrode starting the arc position, opens TIG weldering power supply and ignite electric arc；Before striking, need
By protecting gas circuit to be passed through protective gas to welding region in advance；After the air for excluding welding region, tungsten electrode and workpiece it
Between apply high-frequency and high-voltage and ignite TIG electric arc, when TIG arc burning and after form molten bath, start to be sent into double welding wires and starting impulse
The MIG source of welding current；After double welding wires enter TIG arc zone, double welding wires will be melted by TIG electric arc heated, while in end of welding
MIG pulsed arc will be generated between portion and workpiece；In the welding process, because TIG and MIG arc current is the generation of same direction electric current
Pinch effect and so that electric arc is collected as a whole electric arc, and the entirety electric arc will heat base metals and feeding simultaneously
Wire melting forms welding pool metal；Electric current since tungsten electrode and welding wire are powered by independent current source respectively, between two MIG electric arcs
Distribution is that the arc length determined according to the fusing situation of welding wire carries out itself coordination, and the heat that three electric arc generates is then folded
It is added together the fusing of joint effect welding wire and the formation in molten bath；When welding stopping, it is first turned off MIG welding gun, welding wire stopping is sent
Into MIG welding current, which enters, receives the arc stage, and at this moment double welding wires continue to melt and make dry extension of electrode under the heating of TIG electric arc
Degree becomes smaller, and TIG electric arc will continue to burn；After further turning off TIG arc welding gun switch, the decaying of TIG arc current keeps molten bath slow
Slow cool down is until final extinguish；
Further include following step: weldment prepares and assembling, adjusts the trend and height of tungsten electrode position and double welding wires, makes tungsten electrode
2~3mm of threshold value workpiece surface, double welding wires determine horizontally-arranged or tandem according to the width and requirement for height of weld seam；
After the tungsten electrode arc that ignites, electric arc height is promoted to 4~6mm, is then started wire feeding motor and is sent into welding wire, opens simultaneously
Open the welding that Pulsed MIG Welding Power Source carries out setting welding variables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933911.9A CN106312264B (en) | 2016-11-01 | 2016-11-01 | The hybrid welding torch and its welding method of pulse MIC welding and TIG weldering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610933911.9A CN106312264B (en) | 2016-11-01 | 2016-11-01 | The hybrid welding torch and its welding method of pulse MIC welding and TIG weldering |
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| CN106312264B true CN106312264B (en) | 2019-09-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813032A (en) * | 2017-09-15 | 2018-03-20 | 哈尔滨工业大学（威海） | Lockhole TIG and MIG electric arc couple composite welding apparatus and method |
| CN108788395A (en) * | 2018-06-22 | 2018-11-13 | 山东大学 | A kind of integral type TIG by the double wire feeds of sidewall symmetry welds nozzle and welding gun |
| CN109454315B (en) * | 2018-12-27 | 2020-10-13 | 哈尔滨工业大学 | Multi-tungsten electrode argon arc heat source, control method and welding device |
| CN112658438A (en) * | 2020-12-17 | 2021-04-16 | 上海亿诺焊接科技股份有限公司 | Deep type non-consumable electrode inert gas shielded arc welding wire feeding system |
| CN115041787B (en) * | 2022-06-16 | 2024-02-20 | 盐城工学院 | Material adding device and method for oblique coupling of TIG (tungsten inert gas) arc and double-wire consumable electrode arc |
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|---|---|
| CN106312264A (en) | 2017-01-11 |
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