CN105171209B - TIG welding guns - Google Patents
TIG welding guns Download PDFInfo
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- CN105171209B CN105171209B CN201510567647.7A CN201510567647A CN105171209B CN 105171209 B CN105171209 B CN 105171209B CN 201510567647 A CN201510567647 A CN 201510567647A CN 105171209 B CN105171209 B CN 105171209B
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- water
- core bar
- tig welding
- cavity
- welding guns
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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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/26—Accessories for electrodes, e.g. ignition tips
-
- 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
- B23K9/285—Cooled electrode holders
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention provides a kind of TIG welding guns, it includes being located at water power pipe at shaft core position, the core bar for being arranged on water power pipe periphery, the tungsten electrode folder that is fixed on core bar one end, be fixed on the core bar other end and be connected with water power pipe connecting seats, be arranged on the outside of core bar water collar, be axially fixed be connected between water collar and connecting seats collets, be fixed on the peripheral shell of water collar and the outlet pipe being fixed on connecting seats.Isolation part is provided with the position of the adjacent tungsten electrode folder in core bar inside.Water power pipe extends at the position of isolation part and is provided with the first apopore for extending radially through.The first water cavity connected with first apopore is provided between core bar and water power pipe.Connecting seats are provided with the first water inlet being connected with the first water cavity.The second water cavity is formed between water collar and shell.Connecting seats are formed with the second intercommunicating pore of the first intercommunicating pore and the second water cavity of connection and the outlet pipe for connecting the first water inlet and the second water cavity with collets.
Description
Technical field
The present invention relates to a kind of TIG welding guns, more particularly to a kind of carry the TIG welding guns that high current is welded.
Background technology
Tungsten inert-gas welding（Tungsten Inert Gas, abridge TIG）Often one kind is known as non-expendable
The electric arc welding manner of heat is produced between electrode and working substance；Electrode bar, bath, electric arc and working substance close on heat affected zone all
It is to be mixed into by the protection isolation air of gaseous state, this protection is supplied by gas or mixed gas stream, it is necessary to be that can provide complete
Protection because even very micro air is mixed into can also pollute welding bead, it can thus be appreciated that during TIG weld high-quality welding representative.
But, traditional TIG weld still suffers from obvious limitation, and one side speed of welding is slow, typically in per minute 60 to 200 millis
Rice, it is less efficient；Another aspect welding penetration is shallower, square groove weld when disposably can only 3 millimeters of penetration with lower wall thickness
Workpiece；Another further aspect, according to multi-pass welding, then welding deformation and heat affected area increase, it will usually have influence on the matter of welding point
Amount；In addition welding requirements is also higher, and preparation is more, loses time, human and material resources, and to the skill set requirements of welding operator
Also it is higher.
To overcome above-mentioned each side problem, also have now and aperture is formed by high current on the basis of traditional TIG weld
To realize penetration fustion welding, its maximum single track throat thickness can reach 16 millimeters, it is not necessary to which bevel, speed of welding also can reach
300 to 1000 millimeters per minute, welding process stabilization, beautiful appearance.The key device of this kind of TIG weld is high current welding gun,
But when the welding gun of standard is welded using 500A electric currents currently on the market, at most only 60% arcing time factor, and to reach 100%
Maximum weld electric current only has 300A during arcing time factor, far from meeting needs.
Therefore, it is necessary to provide a kind of improved TIG welding guns to solve the above problems.
The content of the invention
Welded and TIG welding guns with arcing time factor high it is an object of the invention to provide a kind of high current that carries.
For achieving the above object, the invention provides a kind of TIG welding guns, the TIG welding guns include being located at axle center position
The water power pipe at the place of putting, be arranged on water power pipe periphery core bar, be fixed on core bar one end tungsten electrode folder, be fixed on the core bar other end simultaneously
The connecting seats that are connected with water power pipe, the water collar being arranged on the outside of core bar, it is axially fixed and is connected to water collar and conduction
Collets between connecting seat, the shell for being fixed on water collar periphery and the outlet pipe being fixed on connecting seats, wherein,
Isolation part is provided with the position of the adjacent tungsten electrode folder inside the core bar, the water power pipe extends to the isolation part position
Place is simultaneously provided with the first apopore for extending radially through in the one end near isolation part, is provided between the core bar and water power pipe
The first water cavity being connected with first apopore, the connecting seats are provided with first be connected with first water cavity
Water inlet, is formed with the second water cavity between the water collar and shell, the connecting seats are formed with collets and connect institute
State first intercommunicating pore and the second intercommunicating pore of connection second water cavity and outlet pipe of the first water inlet and the second water cavity.
As a further improvement on the present invention, first intercommunicating pore and the second intercommunicating pore are radially symmetrical arranged, described
Water-cooled is arranged with and protrudes into second water cavity that the second water cavity is divided into the parting bead into water cavity and water chamber, it is described enter water cavity
It is interconnected near one end that tungsten electrode is pressed from both sides with water chamber, first intercommunicating pore is connected with water cavity is entered, second intercommunicating pore
It is connected with water chamber.
As a further improvement on the present invention, the connecting seats are provided with logical through what is passed through for water power pipe up and down
Hole, the through-hole wall is in stepped design so that the through hole include housing the first paragraph of one end for being pressed from both sides away from tungsten electrode of core bar,
It is connected with first paragraph and internal diameter is connected and internal diameter and water power pipe external diameter phase with core bar internal diameter identical second segment with second segment
Same the 3rd section, first water inlet is arranged on second segment internal face.
As a further improvement on the present invention, the TIG welding guns also include being arranged at interior exhausted between core bar and water collar
The protection tracheae that edge covers and is fixed on connecting seats, the first air cavity is formed between the interior insulation set and core bar, described
Connecting seats connect the third connecting hole of the protection tracheae and the first air cavity with being formed with collets.
As a further improvement on the present invention, the TIG welding guns also include being fixed on the nozzle of water collar lower end, the spray
Mouth is put around the tungsten electrode sandwiched, and forms the second air cavity around tungsten electrode folder, and second air cavity is connected with the first air cavity.
As a further improvement on the present invention, the interior insulation set lower end inside is formed with and is connected with core bar downside
Boss, be formed with some stomatas for connecting the first air cavity and the second air cavity up and down on the boss, the stomata is justified along core bar
Circumferential direction is uniformly arranged.
As a further improvement on the present invention, it is described protection tracheae include connection outer protection source of the gas main tracheae and with master
Two bronchuses that tracheae is connected, two bronchuses are arranged radially in the both sides of the water power pipe.
As a further improvement on the present invention, the outlet pipe is connected with external power source and is set in conduction simultaneously, and leads to
Connecting seats are crossed to be electrically connected with core bar.
As a further improvement on the present invention, it is fixed with tungsten electrode in the tungsten electrode folder.
The beneficial effects of the invention are as follows：TIG welding guns of the present invention pass through water power pipe, core bar, are conductively connected base water collar etc.
Special water route Cooling Design and electric current transmission design that matching design goes out so that conductive and cooling performance is greatly improved, it is ensured that
Welding gun will not be hot when can carry continual and steady high current and welding so that TIG welding guns of the present invention have arcing time factor high, weldering
Seam welding quality is high, welding penetration is big, speed is fast, 3 to 12 millimeters of workpiece can be once penetrated with square groove, greatlys save work
Part reset time and packing material, so as to greatly improve production efficiency, and service life is longer.
Brief description of the drawings
Fig. 1 is the stereogram of the better embodiment of TIG welding guns one of the present invention；
Fig. 2 is the schematic cross-sectional view of TIG welding guns in Fig. 1, the design of main display water route；
Fig. 3 is another schematic cross-sectional view of TIG welding guns in Fig. 2, main display gas circuit design；
Fig. 4 is the stereogram of the water collar in TIG welding guns in Fig. 1.
Specific embodiment
Below with reference to each implementation method shown in the drawings, the present invention will be described in detail.But these implementation methods are not
The limitation present invention, structure, method or change functionally that one of ordinary skill in the art is made according to these implementation methods
Change and be all contained in protection scope of the present invention.
Refer to the first better embodiment that Fig. 1 to Fig. 4 show TIG welding guns 100 of the present invention.TIG welding guns of the present invention
100 include water power pipe 11 at the shaft core position, are arranged on the core bar 2 of the periphery of water power pipe 11, are fixed on the tungsten of the one end of core bar 2
Pole folder 3, the tungsten electrode 30 being fixed on tungsten electrode folder 3, be fixedly connected the other end of core bar 2 and the connecting seats 4 with water power pipe 11,
The interior insulation set 5 of the periphery of core bar 2 is sheathed on, interior insulation is arranged at and is covered the water collar 6 of 5 peripheries, is axially fixed and is connected to water-cooled
The collets 7 between 6 and connecting seats 4 are covered, the shell 8 of the periphery of water collar 6 is fixed on, is fixed on connecting seats 4
Outlet pipe 12 and protection tracheae 13.
For the sake of for convenience of description, the axial direction of TIG welding guns 100 is set as above-below direction, wherein court in describing below
To tungsten electrode 30 side direction be D score, away from tungsten electrode 30 direction for " on ".
Mainly cut water power pipe 11 connects design with the longitudinal cross-section and its water route of outlet pipe 12 in Fig. 2, incorporated by reference to
Shown in Fig. 1, Fig. 2 and Fig. 4, the water power pipe 11 connects outside cooling water source and power supply（It is not shown）, with to the tungsten electrode 30
Transmission electric current, while carrying out cooling treatment to tungsten electrode.In present embodiment, the outlet pipe 12 realizing outside water return function,
It is also configured as being connected with external power source simultaneously and is set in conduction, greatly improves conductive effect so that TIG welding guns of the present invention
100 can carry electric current reaches 800A.
The core bar 2 is electrically connected with water power pipe 11, outlet pipe 12 by connecting seats 4 and tungsten electrode presss from both sides 3, so as to carry out electricity
Streaming.Specifically, isolation part 21 is provided with the position of the adjacent tungsten electrode folder 3 in the inside of core bar 2 described in present embodiment,
The isolation part 21 will be divided into upper and lower two parts inside core bar 2.The tungsten electrode folder 3 is fixed in lower portion.The water power
Pipe 11 is housed in upper portion, and is extended downward at the position of the isolation part 21, so that cold in water power pipe 11
But water can be fed directly at the position of adjacent tungsten electrode folder 3, so that sufficiently cool effect can be played to tungsten electrode 30, effectively protected
Card high current sustainedly and stably exports tungsten electrode 30 and will not scald excessively, and then can realize the penetration fustion welding with arcing time factor high.
Further, the water power pipe 11 is provided with some first going out of extending radially through in the one end near isolation part 21
Water hole 111, is provided be connected with first apopore 111 between the upper portion of the core bar 2 and water power pipe 11
One water cavity 22 so that tungsten electrode is sent to by water power pipe 11 and presss from both sides the cooling water of 3 tops via the first water of inflow of the first apopore 111
Chamber 22, thus can to for carry out the core bar 2 of electric current transmission carry out it is sufficiently cool, it is ensured that high current stabilization transmission.
The connecting seats 4 are provided with up and down through the through hole 41 passed through for water power pipe 11.The inwall of the through hole 41 is in
Stepped design, so that the through hole 41 includes housing first paragraph 411 and first paragraph of the core bar 2 away from one end of tungsten electrode folder 3
411 are connected and internal diameter and the internal diameter identical second segment 412 of core bar 2 are connected and outside internal diameter and water power pipe 11 with second segment 412
The 3rd section 413 of footpath identical.Wherein, the core bar 2 is mutually welded with first paragraph 411, the inside of the second segment 412 and core bar 2 and
The first water cavity 22 between water power pipe 11 is connected, and the first water cavity 22 of connection is formed with the internal face of second segment 412
First water inlet 4121 so that the cooling water for flowing through the first water cavity 22 can only be flowed outwardly by the first water inlet 4121.
The collets 7 are axially fixed and are connected between water collar 6 and connecting seats 4, are mainly used in water collar 6
Carry out insulation processing.
The water collar 6 is with the base portion 61 being tightly connected with collets 7 and from base portion 61 axially towards the side of tungsten electrode 30
To the fixed part 63 that the main part 62 and main body 62 that extend continue to extend.The external diameter of the main part 62 is less than the base portion 61
With fixed part 63.The shell 8 is sheathed on the periphery of main part 62 of water collar 6, and upper end is tightly connected with the lower end of base portion 61, under
End is connected with the peripheral seal of fixed part 63, so that forming the second water cavity 64 between the main part 62 and shell 8.It is described to lead
Electric connection socket 4, collets 7 have been collectively forming with the base portion 61 of water collar 6 and have connected the water cavity of first water inlet 4121 and second
64 the first intercommunicating pore 42 and the second intercommunicating pore 43 of connection second water cavity 64 and outlet pipe 12.
The intercommunicating pore 43 of first intercommunicating pore 42 and second is radially symmetrical arranged, and the main part 62 is additionally provided with radially
Parting bead 621 between the first intercommunicating pore 42 and the second intercommunicating pore 43, the parting bead 621 is axially extended and by the second water cavity
64 points be into water cavity 641 and water chamber 642, it is described enter water cavity 641 and the lower end of water chamber 642 be interconnected so that by
First water inlet 4121 and the first intercommunicating pore 42 flow into the cooling water of the second water cavity 64 first via water cavity 641 is entered, and then pass through again
Water chamber 642, the second intercommunicating pore 43 and outlet pipe 12 flow out.Set to enter the periphery of TIG welding guns 100 of the present invention by this kind
Row cooling treatment, is further ensured that the stabilization transmission of high current.
The main longitudinal cross-section for having cut protection tracheae 13 and the connection design of its gas circuit in Fig. 3, incorporated by reference to Fig. 1 and Fig. 3
Shown, the interior insulation set 5 is located between core bar 2 and water collar 6, wherein, formed between the inwall and core bar 2 of interior insulation set 5
There is the first air cavity 51, outside wall surface and the internal face of water collar 6 recline setting.The connecting seats 4, collets 7 and water collar 6
The third connecting hole 44 of the connection protection air cavity 51 of tracheae 13 and first is formed with base portion 61.The upper and lower side of the collets 7
Sealing ring 72 is provided with the position of the first intercommunicating pore 42, the second intercommunicating pore 43 and third connecting hole 44, to ensure aqueous vapor
It is closed.
Specifically, the collets 7 are provided with the extension 71 for extending downwardly and being looped around around core bar 2.The interior insulation
The upper end inner side of set 5 is formed with the support division supported with the lower end of extension 71.The upper end of the base portion 61 inner side direction of the water collar 6
Projection has prominent muscle 611 at shaft core position, and the prominent muscle 611 is supported in the outside of extension 71, so that the prominent muscle 611 of water collar 6
Gap 612 is formed between the internal face and extension 71 of lower section, the outlet in the third connecting hole 44 is connected with gap 612
It is logical.The lower end of the extension 71 is communicated with the breach of the air cavity 51 of gap 612 and first（It is not shown）.So that the protection
Protective gas in tracheae 13 is sent into the first air cavity 51 via third connecting hole 44, gap 612, breach.
Additionally, incorporated by reference to shown in Fig. 1 to Fig. 3, the TIG welding guns 100 also include being fixed on the nozzle 9 of the lower end of water collar 6,
The nozzle 9 is set around tungsten electrode folder 3, and the second air cavity 91, second air cavity 91 and the are formed around tungsten electrode folder 3
One air cavity 51 is connected.
Specifically, 5 lower end insides of the interior insulation set are formed with the boss 52 being connected with the downside of the core bar 2.It is described
Some stomatas 521 for connecting the first air cavity 51 and the second air cavity 91 up and down are formed with boss 52, the stomata 521 is along core bar 2
Circumferencial direction is uniformly arranged.Thus may be such that via the protective gas of the second air cavity 91 of entrance of the first air cavity 51 can be in mesh-like edge
Uniformly shed around tungsten electrode folder 3, and protective gas deflection is higher, is suitable for high current piercing welding, and can be effective
Ensure the stabilization and appearance of weld quality of electric arc.
Additionally, in the present embodiment, the protection tracheae 13 includes connection outer protection source of the gas（It is not shown）Main gas
Pipe 131 and two bronchuses 132 being connected with main tracheae 131, two bronchuses 132 are arranged radially in the water power pipe 11
Both sides.This kind sets and may be such that outside is carried out gas and is divided into two after TIG welding guns 100 of the present invention are entered, it is ensured that air-flow uniformly divides
Cloth.
As known from the above, water route Cooling Design special in TIG welding guns 100 of the present invention and electric current transmission design so that lead
Electricity and cooling performance are greatly improved, it is ensured that welding gun will not be hot when can carry continual and steady high current and welding so that this
Invention TIG welding guns 100 have arcing time factor high, weld seam welding quality is high, welding penetration is big, speed is fast, can be with square groove once
The workpiece of 3 to 12 millimeters of through welding, greatlys save workpiece reset time and packing material, so as to greatly improve production efficiency, and
Service life is longer.
It should be understood that, although the present specification is described in terms of embodiments, but not each implementation method only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Used as an entirety, technical scheme in each implementation method can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment for understanding.
Those listed above is a series of to be described in detail only for feasibility implementation method of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included within the scope of the present invention.
Claims (9)
1. a kind of TIG welding guns, it is characterised in that：The TIG welding guns include water power pipe at the shaft core position, are arranged on water power
Pipe periphery core bar, be fixed on core bar one end tungsten electrode folder, be fixed on the core bar other end and with being conductively connected that water power pipe is connected
Seat, be arranged on the outside of core bar water collar, be axially fixed collets, the fixation being connected between water collar and connecting seats
In the peripheral shell of water collar and the outlet pipe being fixed on connecting seats, wherein, the adjacent tungsten inside the core bar
Isolation part is provided with the position of pole folder, the water power pipe is extended at the isolation part position and in the one end near isolation part
The first apopore for extending radially through is provided with, is provided between the core bar and water power pipe and is connected with first apopore
The first water cavity, the connecting seats are provided with the first water inlet being connected with first water cavity, the water collar and outer
The second water cavity is formed between shell, the connecting seats are formed with collets and connect first water inlet and the second water cavity
The first intercommunicating pore and connect the second intercommunicating pore of second water cavity and outlet pipe.
2. TIG welding guns according to claim 1, it is characterised in that：First intercommunicating pore and the second intercommunicating pore are radially
Be symmetrical arranged, the water-cooled be arranged with protrude into second water cavity with by the second water cavity be divided into water cavity and water chamber every
Bar, it is described enter water cavity and water chamber be interconnected near one end of tungsten electrode folder, first intercommunicating pore is connected with water cavity is entered, institute
The second intercommunicating pore is stated to be connected with water chamber.
3. TIG welding guns according to claim 1, it is characterised in that：The connecting seats are provided with and run through to supply water up and down
The through hole that fulgurite is passed through, the through-hole wall is in stepped design, so that the through hole includes housing what core bar was pressed from both sides away from tungsten electrode
The first paragraph of one end is connected with first paragraph and internal diameter is connected and internal diameter with core bar internal diameter identical second segment with second segment
With the 3rd section of water power pipe external diameter identical, first water inlet is arranged on second segment internal face.
4. TIG welding guns according to claim 1, it is characterised in that：The TIG welding guns also include being arranged at core bar and water-cooled
Interior insulation set and the protection tracheae that is fixed on connecting seats between set, are formed with the between the interior insulation set and core bar
One air cavity, the connecting seats connect the third connecting hole of the protection tracheae and the first air cavity with being formed with collets.
5. TIG welding guns according to claim 4, it is characterised in that：The TIG welding guns also include being fixed on water collar lower end
Nozzle, the nozzle ring puts around the tungsten electrode sandwiched, and the second air cavity of formation around tungsten electrode folder, second air cavity and the
One air cavity is connected.
6. TIG welding guns according to claim 5, it is characterised in that：Interior insulation set lower end inside be formed with it is described
The boss that core bar downside is connected, is formed with some stomatas for connecting the first air cavity and the second air cavity up and down, institute on the boss
Stomata is stated uniformly to be arranged along core bar circumferencial direction.
7. TIG welding guns according to claim 4, it is characterised in that：The protection tracheae includes connection outer protection source of the gas
Main tracheae and two bronchuses being connected with main tracheae, two bronchuses are arranged radially in the both sides of the water power pipe.
8. TIG welding guns according to claim 1, it is characterised in that：The outlet pipe is connected with external power source and is in simultaneously
Conduction is set, and is electrically connected with by connecting seats and core bar.
9. TIG welding guns according to claim 1, it is characterised in that：Tungsten electrode is fixed with the tungsten electrode folder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510567647.7A CN105171209B (en) | 2015-08-27 | 2015-09-09 | TIG welding guns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015105344005 | 2015-08-27 | ||
| CN201510534400 | 2015-08-27 | ||
| CN201510567647.7A CN105171209B (en) | 2015-08-27 | 2015-09-09 | TIG welding guns |
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| Publication Number | Publication Date |
|---|---|
| CN105171209A CN105171209A (en) | 2015-12-23 |
| CN105171209B true CN105171209B (en) | 2017-06-06 |
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|---|---|---|---|---|
| CN106077920B (en) * | 2016-06-24 | 2018-11-06 | 天津大学 | A kind of tungsten electrode internal water cooling TIG welding guns based on cathode pinch effect |
| CN105983774B (en) * | 2016-06-24 | 2018-08-10 | 天津大学 | A kind of copper-clad tungsten electrode water cooling TIG welding guns based on cathode pinch effect |
| CN106735763A (en) * | 2017-03-14 | 2017-05-31 | 东莞市金龙珠宝首饰有限公司 | A kind of gas welding welding gun |
| CN107695492B (en) * | 2017-11-13 | 2023-09-05 | 昆山华恒焊接股份有限公司 | TIG welding gun |
| CN109434256A (en) * | 2018-12-28 | 2019-03-08 | 成都国泰景程科技有限公司 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
| CN109926699A (en) * | 2019-04-30 | 2019-06-25 | 河海大学常州校区 | A kind of tungsten electrode replaces robot TIG welding gun automatically |
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| SU1706799A1 (en) * | 1989-12-14 | 1992-01-23 | Волгоградский Политехнический Институт | Two-electrode torch |
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| Publication number | Publication date |
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| CN105171209A (en) | 2015-12-23 |
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