CN207386807U - Pulsed negative pressure laser enhancing type lockhole TIG weld device - Google Patents
Pulsed negative pressure laser enhancing type lockhole TIG weld device Download PDFInfo
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- CN207386807U CN207386807U CN201721180638.3U CN201721180638U CN207386807U CN 207386807 U CN207386807 U CN 207386807U CN 201721180638 U CN201721180638 U CN 201721180638U CN 207386807 U CN207386807 U CN 207386807U
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Abstract
The utility model belongs to technical field of welding equipment, a kind of pulsed negative pressure laser enhancing type lockhole TIG weld device is disclosed, including hollow tungsten electrode, tungsten electrode folder, Vacuum container, insulation tracheae, laser, laser holder, high transparent glass, welding gun ectosome, electric conductor, shading ring, adapting rod, adapter, conducting rod insulation sleeve, gas adapter, negative pressure of vacuum connector, upper and lower insulator and gas hood, top nut, lower end nut, locking nut, pulse electromagnetic valve, negative pressure of vacuum table, pressure vessel, aspiration pump.The technical program ensures the stability of welding process, improves the welding quality of lockhole TIG, makes weld shape more reasonable, welding process is more stablized, operative constraint arc shape simultaneously reduces weld heat-affected zone, enhances electric arc penetration power, electric arc generates concussion effect, seam organization is refined, cooperation laser enhancing effect optimizes welding seam deep width ratio, appearance of weld is more beautiful, realizes the promotion and optimization of weldquality and welding efficiency.
Description
Technical field
The utility model patent is related to technical field of welding equipment more particularly to pulsed negative pressure laser enhancing type lockhole TIG
Welder.
Background technology
Lockhole TIG (K-TIG) welding technique is by Government Of Australia Commw Scient Ind Res Org (CSIR O)
A kind of one way full penetration weld welding technique of high speed of exploitation compared with traditional TIG is welded, is adjusted by Butt welding gun structure
It is whole, realize the Fast Cooling to tungsten electrode so that arc energy and arc pressure dramatically increase, while can be formed in the welding process
One highly stable, self-correction full penetration aperture forms the perforation type welding similar to perforation type plasma arc, real
The now high-quality welding of big thick parts.Usual thickness below 16mm material (such as ferritic stainless steel, austenitic stainless steel,
Two phase stainless steel, titanium alloy, zircaloy etc.) it need not both fill silk also without bevel, it but can be with than traditional TIG weld
The speed that fast 100 times of technology is welded, and realizes single-side welding double-side forming, and the more traditional TIG welderings of production efficiency greatly improve.But
When welding slab, lockhole TIG is since electric current is larger and arc shape is more unfolded compared with plasma arc so that heat affected area
Scope is larger, while keyhole shape is in bowl-type, and penetration section is very narrow, is difficult to obtain suitable parameter in actual application, because
This can only weld the higher metal of liquid surface tension coefficient, such as titanium alloy, application range are subject to greatly with practicability
Limitation.
Laser welding technology be by the use of high-energy density laser beam as heat source a kind of high-efficiency and precision welding method.With
Traditional welding method is compared, and Laser Welding is due to power density is high, speed of welding is fast, heat input is small and post welding distortion
It is small to wait remarkable advantages, it is widely used in industrial circles such as automobile making, shipbuilding, aerospace, electronics at present.But
Be laser welding simultaneously there is also welding quality unstable, material is high to laser reflectivity, joint performance is poor the shortcomings of.
The content of the invention
The purpose of this utility model is that for above-mentioned technical problem, provide a kind of penetration power of stabilization strong welding dress
It puts.
In order to achieve the above object, the technical solution adopted in the utility model is：Pulsed negative pressure laser enhancing type lockhole TIG is welded
Connection device, including hollow tungsten electrode, the tungsten electrode folder of the hollow tungsten electrode of clamping and the coaxially connected Vacuum container of hollow tungsten electrode and insulation
Tracheae (hollow tungsten electrode, Vacuum container, insulation tracheae and the concentricity of negative pressure of vacuum connector outer surface are below 3 μm), laser
Device, laser holder, the high transparent glass being arranged between laser and hollow tungsten electrode central cavity, welding gun ectosome, conduction
Body, shading ring, adapter, conducting rod insulation sleeve, gas adapter, negative pressure of vacuum connector, play insulation protection at adapting rod
It is upper insulator, lower insulator and gas hood, the top nut having locking effect, lower end nut, locking nut, pulse electromagnetic valve, true
Hollow pressure gauge, pressure vessel, aspiration pump.
Lower insulator respectively with the contact surface of electric conductor and welding gun ectosome at be provided with groove, between them formed two
Aquaporin；Lower insulator connects cooling water inlet pipe, welding gun ectosome connection cooling water outlet；Two aquaporins pass through lower insulation
The through hole opened up on body is connected, and by cycling of the cooling water between two aquaporins, tungsten electrode and welding gun force cold
But.Cooling water flows into lower insulator by adapter, is flowed to respectively outside electric conductor and welding gun by two aquaporins of lower insulator
Body, the flowing cooling tungsten electrode of cooling water aquaporin between lower insulator and electric conductor, cooling water is in lower insulator and electric conductor
Between aquaporin flowing cooling welding tool.
Negative pressure of vacuum connector is equipped in insulation upper tracheal, is connected with insulation tracheae, Vacuum container and hollow tungsten electrode, with
Pulse electromagnetic valve, pressure vessel and aspiration pump collective effect reach pulsed negative pressure state, and operative constraint arc shape reduces weldering
Heat affected area is stitched, enhances electric arc penetration power, and the negative pressure state pulsed can make electric arc generate concussion effect, have stirring to molten bath
Effect, refines seam organization, and cooperation laser enhancing effect optimizes welding seam deep width ratio, appearance of weld is more beautiful.
Pulse electromagnetic valve is controlled by pulse signal generator, and pulsed negative pressure frequency range is 0~1KHz.
Insulation tracheae and Vacuum container are hollow frustums, and hollow tungsten electrode is symmetric pyramid, cone polar diameter for 6~
12mm, insulation tracheae, Vacuum container and hollow tungsten electrode cone angle are 60 °, and endoporus forms pulsed negative pressure state for being evacuated
And transmission laser.The cone-shaped inner hole makes laser power density be evenly distributed, increases laser power density, obtain convenient for convergence laser
Obtain the welding penetration of bigger.
Forming face contacts between gas hood and welding gun ectosome, and joint face scribbles heat-conducting silicone grease, ensures effectively scattering and disappearing for heat.
Laser is edge emitting type semiconductor, and wavelength 1064nm, spot diameter is 0.1mm after light beam focuses on, and power is
750W。
O-ring seal is equipped between lower insulator and electric conductor and lower insulator and welding gun ectosome.
Upper insulator and lower insulator are high-strength insulating plastics, and shading ring is ceramic material.
Laser is fixed on by the laser holder of lockhole welding gun upper end directly over laser gas conversion head, and injection swashs
Light passes through the transmission of light path system and goes out the focusing of shaven head, central into lockhole welding gun gun body, is inserted through the center of hollow electrode
Hole, successively through excessively high transparent glass, negative pressure of vacuum connector central cavity, insulation trachea centre cavity, Vacuum container central hollow
It is projected after chamber, center tungsten electrode central cavity.
Adapter top is equipped with sheet glass, for penetrating laser and preventing gas from being overflowed from upside, ensures negative pressure state.
The utility model pulsed negative pressure laser enhancing type lockhole TIG weld device is that laser beam is focused on through hollow tungsten electrode
The surface of welding workpiece, laser beam are realized welding in same molten bath with lockhole TIG electric arcs collective effect, to 8-14mm, are filled out
The material to be welded of 8-16mm has good welding effect in the case of silk.Tapered hollow lockhole TIG weld device, by laser
Portion or external enhancing, make lockhole TIG be realized in molten bath bottom and stablize small size keyhole shape dynamic control, ensure welding process
Stability, improve the welding quality of lockhole TIG, make weld shape more reasonable, welding process more stablize, pulse simultaneously
Vacuum extractor forms subnormal ambient on hollow tungsten electrode top, and operative constraint arc shape reduces weld heat-affected zone, enhancing electricity
Arc penetration power, and the negative pressure state pulsed can make electric arc generate concussion effect, the effect for having stirring to molten bath refines weld seam group
It knits, cooperation laser enhancing effect optimizes welding seam deep width ratio, and appearance of weld is more beautiful, realizes weldquality and welding efficiency
It is promoted and optimized.Specifically have the advantage that：
1. by laser enhancing, lockhole TIG is made to realize stable pierce state in molten bath bottom, ensures the steady of welding process
It is qualitative, improve the weld contour and welding quality of lockhole TIG；
2. pulsed negative pressure state can operative constraint arc shape, reduce weld heat-affected zone, enhance electric arc penetration power, and arteries and veins
Dynamic negative pressure state can make electric arc generate concussion effect, have the effect of stirring to molten bath, refine seam organization, coordinate laser enhancing
Effect, optimizes welding seam deep width ratio, and appearance of weld is more beautiful
It 3., can be defeated in the heat for reducing lockhole TIG electric arcs in the case of equal fusion penetration since the form of laser is more shunk
Enter, reduce the scope of heat affected area, improve tissue；
4. lockhole TIG electric arcs mutually enhance with laser, electric arc has workpiece surface emollescence, can be dilute to a certain extent
Photo plasma and metallic vapour are released, reduces reflectivity of the metal surface to laser, improves laser utilization.
Description of the drawings
Fig. 1：The utility model pulsed negative pressure laser enhancing type lockhole TIG weld apparatus structure schematic diagram；
Fig. 2：The utility model pulsed negative pressure laser enhancing type lockhole TIG weld device is welded to connect figure.
Wherein：1. high transparent glass；2. laser holder；3. top blind flange；4. upper cap nut；5. upper insulator；6. it leads
Electric body；7. Vacuum container；8. lower insulator；9. shading ring；10. tungsten electrode presss from both sides；11. locking nut；12. gas hood；13. hollow tungsten
Pole；14. lower end nut；15. welding gun ectosome；16. adapter；17. junction pole；18. conducting rod insulation sleeve；19. gas adapter；
20. insulate tracheae；21. negative pressure of vacuum connector；22. laser；23. optical fiber；24. gas pulses electromagnetic valve；25. pressure gauge；
26. pressure vessel；27. aspiration pump.
Specific embodiment
The utility model is described in further detail With reference to embodiment.
As shown in Figure 1, pulsed negative pressure laser enhancing type lockhole TIG weld device, solid including high transparent glass 1, laser
Determine frame 2, top blind flange 3, upper cap nut 4, upper insulator 5, electric conductor 6, Vacuum container 7, lower insulator 8, shading ring 9, tungsten electrode
Folder 10, locking nut 11, hollow tungsten electrode 13, lower end nut 14, welding gun ectosome 15, adapter 16, junction pole 17, are led at gas hood 12
Electric pole insulation sleeve 18, gas adapter 19, insulation tracheae 20, negative pressure of vacuum connector 21, laser 22, optical fiber 23, pulse electromagnetic
Valve 24, pressure vacuum gauge 25, pressure vessel 26, aspiration pump 27.Hollow tungsten electrode 13 passes through locking by 10 clamping of tungsten electrode folder
Nut 11 is fixed on electric conductor 6, and electric conductor 6 is assemblied in welding gun ectosome 15, and upper/lower terminal is separately installed with upper insulator
5th, lower insulator 6, top blind flange 3 carry out welder internals under the locking effect of upper cap nut 4 longitudinally fixed；In order to
Ensure that pumping gas circuit is smooth, hollow 13 top of tungsten electrode is sequentially arranged with Vacuum container 7, insulation tracheae 20, negative pressure of vacuum connector 21.
Lower end nut 14 is locked gas hood 12 and welding gun ectosome 15 by a boss, shading ring 9 be installed in gas hood 12 with
Between electric conductor 6, play the role of insulation and change gas circuit.Junction pole 17 is connected with electric conductor 6, gas conversion head 19 with it is upper absolutely
Edge body 5 connects, and adapter 16 is connected with lower insulator 8.
Laser 22 is fixed on by laser holder 2 directly over laser gas conversion head 21, the laser warp of injection
It crosses successively through excessively high transparent glass 1,21 central cavity of negative pressure of vacuum connector, 20 central cavity of gases at high pressure insulation jackscrew, vacuum
It is projected after 7 central cavity of negative tube, 13 central cavity of hollow tungsten electrode.
O-ring seal, lower insulation are equipped between lower insulator 8 and electric conductor 6 and lower insulator 8 and welding gun ectosome 15
Body 8 forms two aquaporins between electric conductor 6 and welding gun ectosome 15 respectively；Lower insulator 8 connects cooling water inlet pipe 16,
Welding gun ectosome 15 connects cooling water outlet；Two aquaporins are connected by the through hole opened up on lower insulator, respectively to tungsten
Pole and welding gun carry out circulating cooling.
Hollow 13 end of tungsten electrode is symmetric pyramid, and a diameter of 6~12mm, end cone angle is 60 °, and endoporus is taper hole, is bored
It spends for 1/10, endoporus forms pulsed negative pressure state and transmission laser for being evacuated, and wherein tungsten electrode lower end diameter of bore is
0.2mm.Upper insulator and lower insulator are high-strength insulating plastics, and shading ring 9 is ceramic material.The source of welding current is selected difficult to understand safe
WSME-630 type welding machines, electric current is adjustable in 20~630A, and pulse current, frequency, duty cycle can high-precisions during DC reverse connection
It is preset.
Cooling water circulation equipment choosing CW-5300 type cooling-water machines, cooling water temperature are minimum up to 1.5 DEG C.
Throat thickness is 304 stainless steels of 12mm, and welding point form is banjo fixing butt jointing, confirms that cooling water follows before weldering successively
Ring, conductive channel connection, gas channel effect, when welding, establish water, electricity, gas connection, first open cooling water recirculation system successively,
Startup power supply starts to weld after setting suitable parameter.As shown in Fig. 2, first pumping makes pressure vessel reach negative pressure shape before welding
After arc stability, pulse electromagnetic valve is controlled with pulse signal generator for state, the later on lockhole TIG weld power supply starting the arc,
Make to form pulsed negative pressure state inside hollow tungsten electrode, negative pressure frequency is 100Hz, finally opens Laser Power Devices, laser beam foucing exists
Molten bath bottom, is be combined with each other by laser enhancing and pulsed negative pressure, operative constraint arc shape, makes lockhole TIG in molten bath bottom
It realizes and stablizes small size keyhole shape dynamic control, effectively reduce weld heat-affected zone, optimize welding seam deep width ratio, guarantee was welded
The stability of journey makes weld shape more reasonable, and appearance of weld is more beautiful, realize the promotion of weldquality and welding efficiency with
Optimization.
Embodiment only illustrates the technical solution of the utility model rather than carries out any restrictions to it；Although with reference to foregoing reality
Example is applied the utility model is described in detail, it for those of ordinary skill in the art, still can be to foregoing
Technical solution recorded in embodiment modifies or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is not made to depart from the spirit and model of the utility model technical solution claimed
It encloses.
Claims (8)
1. pulsed negative pressure laser enhancing type lockhole TIG weld device, it is characterised in that：Including hollow tungsten electrode, the hollow tungsten electrode of clamping
Tungsten electrode folder, the Vacuum container coaxially connected with hollow tungsten electrode and insulate tracheae, laser, laser holder, be arranged on
High transparent glass, welding gun ectosome between laser and hollow tungsten electrode central cavity, electric conductor, shading ring, adapting rod, switching
Head, conducting rod insulation sleeve, gas adapter, negative pressure of vacuum connector, upper insulator, the lower insulator of insulation protection are gentle
Upper cap nut, lower end nut, locking nut, pulse electromagnetic valve, pressure vacuum gauge, pressure vessel and the pumping cover, having locking effect
Air pump；The lower insulator forms two aquaporins between electric conductor and welding gun ectosome respectively；Lower insulator connects cooling water
Water inlet pipe, welding gun ectosome connection cooling water outlet；Two aquaporins are connected by the through hole opened up on lower insulator, are passed through
Cycling of the cooling water between two aquaporins carries out pressure cooling to tungsten electrode and welding gun.
2. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：In described
Empty tungsten electrode end is symmetric pyramid, and a diameter of 6~12mm, upper and lower end parts cone angle is 60 °.
3. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：In described
Empty tungsten electrode endoporus is taper hole, and taper 1/10, tungsten electrode lower end diameter of bore is 0.2mm.
4. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：The gas
Cover is contacted with forming face between welding gun ectosome, and joint face scribbles heat-conducting silicone grease, ensures effectively scattering and disappearing for heat.
5. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：It is described to swash
Light device is edge emitting type semiconductor, and wavelength 1064nm, spot diameter is 0.1mm, power 750W after light beam focuses on.
6. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：Under described
O-ring seal is equipped between insulator and electric conductor and lower insulator and welding gun ectosome.
7. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：On described
Insulator and lower insulator are high-strength insulating plastics, and shading ring is ceramic material.
8. pulsed negative pressure laser enhancing type lockhole TIG weld device according to claim 1, it is characterised in that：The arteries and veins
It rushes electromagnetic valve to be controlled by pulse signal generator, pulsed negative pressure frequency range is 0~1KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721180638.3U CN207386807U (en) | 2017-09-15 | 2017-09-15 | Pulsed negative pressure laser enhancing type lockhole TIG weld device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721180638.3U CN207386807U (en) | 2017-09-15 | 2017-09-15 | Pulsed negative pressure laser enhancing type lockhole TIG weld device |
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| CN207386807U true CN207386807U (en) | 2018-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685193A (en) * | 2017-09-15 | 2018-02-13 | 哈尔滨工业大学（威海） | Pulsed negative pressure laser enhancing type lockhole TIG weld device |
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- 2017-09-15 CN CN201721180638.3U patent/CN207386807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685193A (en) * | 2017-09-15 | 2018-02-13 | 哈尔滨工业大学（威海） | Pulsed negative pressure laser enhancing type lockhole TIG weld device |
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