CN105171209A - TIG welding gun - Google Patents
TIG welding gun Download PDFInfo
- Publication number
- CN105171209A CN105171209A CN201510567647.7A CN201510567647A CN105171209A CN 105171209 A CN105171209 A CN 105171209A CN 201510567647 A CN201510567647 A CN 201510567647A CN 105171209 A CN105171209 A CN 105171209A
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- water
- welding gun
- core bar
- tig welding
- cavity
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—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 invention provides a TIG welding gun. The TIG welding gun comprises a water electric pipe positioned in the axis position, a core rod arranged at the outer periphery of the water electric pipe, a tungsten electrode clamp fixed at one end of the core rod, an electric conducting connection base fixed at the other end of the core rod and connected with the water electric pipe, a water cooling jacket arranged at the outer side of the core rod, an insulation block fixedly connected between the water cooling jacket and the electric conducting connection base in the axial direction, a shell fixed at the outer periphery of the water cooling jacket, and a water outlet pipe fixed on the electric conducting connection base. An isolation part is arranged in the core rod near the tungsten electrode clamp. The water electric pipe extends to the position of the isolation part, and is provided with a first water outlet hole penetrating through in the radial direction. A first water cavity communicated with the first water outlet hole is formed between the core rod and the water electric pipe. The electric conducting connection base is provided with a first water inlet communicated with the first water cavity. A second water cavity is formed between the water cooling jacket and the shell. The electric conducting connection base and the insulation block are formed with a first communication hole for communicating the first water inlet with the second water cavity and a second communication hole for communicating the second water cavity with the water outlet pipe.
Description
Technical field
The present invention relates to a kind of TIG welding gun, particularly relate to and a kind ofly can carry out the TIG welding gun that welds by bearing great current.
Background technology
Tungsten inert-gas welding (TungstenInertGas, abbreviation TIG) a kind of arc welding mode producing heat between non-expendable electrode and working substance of being often known as; It is all completely cut off air by the protection of gaseous state to be mixed into that electrode bar, bath, electric arc and working substance close on heat affected zone; this protection is by gas or mixed gas flow supply; must be to provide full guard; because even very micro-air is mixed into also can pollute welding bead, it can thus be appreciated that TIG welding time high-quality welding representative.But still there is obvious limitation in traditional TIG welding, speed of welding is slow on the one hand, and generally at 60 to 200 millimeters per minute, efficiency is lower; On the other hand welding penetration is more shallow, during square groove welding disposable can only penetration 3 millimeters with the workpiece of lower wall thickness; Again on the one hand, according to multi-pass welding, then welding deformation and heat affected area increase, and usually can have influence on the quality of welding point; In addition welding requirements is also higher, and preparation is many, loses time, human and material resources, and also higher to the skill set requirements of welding operator.
For overcoming above-mentioned each side problem, also have now on the basis of welding at traditional TIG and realize penetration fustion welding by big current formation aperture, its maximum single track throat thickness can reach 16 millimeters, do not need bevel, speed of welding also can reach 300 to 1000 millimeters per minute, welding process is stablized, beautiful appearance.The key device of this kind of TIG welding is big current welding gun, but when the welding gun of standard uses the welding of 500A electric current on market now, only has at most the arcing time factor of 60%, and when will reach the arcing time factor of 100%, maximum weld electric current only has 300A, far can not satisfy the demand.
Therefore, be necessary to provide a kind of TIG welding gun of improvement to solve the problem.
Summary of the invention
The object of the present invention is to provide a kind of can carrying out welding and there is the TIG welding gun of high arcing time factor by bearing great current.
For achieving the above object, the invention provides a kind of TIG welding gun, described TIG welding gun comprises the water power pipe being positioned at shaft core position place, be arranged on the core bar of water power pipe periphery, be fixed on the tungsten electrode folder of core bar one end, be fixed on the core bar other end and the connecting seats be connected with water power pipe, be arranged at the water collar outside core bar, be fixedly connected on the collets between water collar and connecting seats vertically, the shell being fixed on water collar periphery and the outlet pipe be fixed on connecting seats, wherein, the position of the inner adjacent described tungsten electrode folder of described core bar is provided with isolation part, described water power pipe extends to position, described isolation part and the one end near isolation part is provided with the first apopore radially run through, the first water cavity be connected with described first apopore is provided with between described core bar and water power pipe, described connecting seats is provided with the first water inlet be connected with described first water cavity, the second water cavity is formed between described water collar and shell, described connecting seats and collets are formed with the first intercommunicating pore being communicated with described first water inlet and the second water cavity and the second intercommunicating pore being communicated with described second water cavity and outlet pipe.
As a further improvement on the present invention, described first intercommunicating pore and the second intercommunicating pore are radially symmetrical arranged, described water collar is provided with and protrudes in described second water cavity the second water cavity to be divided into the parting bead into water cavity and water chamber, described enter one end of pressing from both sides near tungsten electrode of water cavity and water chamber be interconnected, described first intercommunicating pore with enter water cavity and be connected, described second intercommunicating pore is connected with water chamber.
As a further improvement on the present invention, described connecting seats is provided with the through hole running through up and down and pass for water power pipe, described through-hole wall is stepped design, with make described through hole comprise one end of pressing from both sides away from tungsten electrode of collecting core bar first paragraph, to be connected with first paragraph and the internal diameter second segment identical with core bar internal diameter, to be connected with second segment and internal diameter three section identical with water power pipe external diameter, described first water inlet is arranged on second segment internal face.
As a further improvement on the present invention; described TIG welding gun also comprises the interior insulation sleeve be arranged between core bar and water collar and the protection tracheae be fixed on connecting seats; be formed with the first air cavity between described interior insulation sleeve and core bar, described connecting seats is communicated with the third connecting hole of described protection tracheae and the first air cavity with collets are formed.
As a further improvement on the present invention, described TIG welding gun also comprises the nozzle being fixed on water collar lower end, and described nozzle ring is put around described tungsten electrode sandwiched, and forms the second air cavity around tungsten electrode folder, and described second air cavity is connected with the first air cavity.
As a further improvement on the present invention, described interior insulation sleeve lower end inside is formed and the boss be connected on the downside of described core bar, described boss is formed with some pores being communicated with the first air cavity and the second air cavity up and down, described pore is evenly arranged along core bar circumferencial direction.
As a further improvement on the present invention, described protection tracheae comprises the main tracheae connecting outer protection source of the gas and two bronchuses be connected with main tracheae, and two bronchuses are arranged radially in the both sides of described water power pipe.
As a further improvement on the present invention, described outlet pipe is connected with external power source simultaneously and is conduct electricity to arrange, and is electrically connected by connecting seats and core bar.
As a further improvement on the present invention, described tungsten electrode folder internal fixtion has tungsten electrode.
The invention has the beneficial effects as follows: TIG welding gun of the present invention is by water power pipe, core bar, the special water route Cooling Design that the matching design such as connecting seats machine water collar go out and current delivery design, conduction and cooling performance are significantly improved, when guaranteeing the continual and steady big current of carrying and weld, welding gun can not be hot, TIG welding gun of the present invention is made to have high arcing time factor, weld seam welding quality is high, welding penetration is large, speed is fast, can the workpiece of square groove through welding 3 to 12 millimeters, greatly save workpiece reset time and packing material, thus significantly enhance productivity, and longer service life.
Accompanying drawing explanation
Fig. 1 is the stereogram of TIG welding gun one better embodiment of the present invention;
Fig. 2 is the cross-sectional schematic of TIG welding gun in Fig. 1, main display water route design;
Fig. 3 is another cross-sectional schematic of TIG welding gun in Fig. 2, the design of main display gas circuit;
Fig. 4 is the stereogram of the water collar in Fig. 1 in TIG welding gun.
Detailed description of the invention
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
Please refer to Fig. 1 to the first better embodiment that Figure 4 shows that TIG welding gun 100 of the present invention.TIG welding gun 100 of the present invention comprises the water power pipe 11 being positioned at shaft core position place, be arranged on the core bar 2 of water power pipe 11 periphery, be fixed on the tungsten electrode folder 3 of core bar 2 one end, be fixed on the tungsten electrode 30 on tungsten electrode folder 3, be fixedly connected with core bar 2 other end and with the connecting seats 4 of water power pipe 11, be sheathed on the interior insulation sleeve 5 of core bar 2 periphery, be arranged at the water collar 6 of interior insulation sleeve 5 periphery, be fixedly connected on the collets 7 between water collar 6 and connecting seats 4 vertically, be fixed on the shell 8 of water collar 6 periphery, be fixed on the outlet pipe 12 on connecting seats 4 and protection tracheae 13.
For convenience of description, the middle axial direction by TIG welding gun 100 is described below and is set as above-below direction, the direction, side wherein towards tungsten electrode 30 is D score, the direction away from tungsten electrode 30 be " on ".
The longitudinal cross-section and its water route that have mainly cut water power pipe 11 and outlet pipe 12 in Fig. 2 are communicated with design, shown in Fig. 1, Fig. 2 and Fig. 4, described water power pipe 11 connects external refrigeration water source and power supply (not shown), with to described tungsten electrode 30 transmission current, cooling processing is carried out to tungsten electrode simultaneously.In present embodiment, described outlet pipe 12 is realizing outside water return function, simultaneously is also set to be connected with external power source and is conduct electricity to arrange, and significantly to improve conductive effect, makes TIG welding gun 100 of the present invention can reach 800A by loaded current.
Described core bar 2 is electrically connected water power pipe 11, outlet pipe 12 and tungsten electrode folder 3 by connecting seats 4, thus carries out current delivery.Particularly, the position of the inner adjacent described tungsten electrode folder 3 of core bar 2 described in present embodiment is provided with isolation part 21, and core bar 2 interior separation is upper and lower two parts by described isolation part 21.Described tungsten electrode folder 3 is fixed in lower portion.Described water power pipe 11 is housed in upper portion, and extend downward position, described isolation part 21, make the cooling water in water power pipe 11 directly can be delivered to the position of adjacent tungsten electrode folder 3 thus, thus abundant cooling effect can be played to tungsten electrode 30, effective guarantee big current outputs to tungsten electrode 30 sustainedly and stably and can not be excessively boiling hot, and then can realize the penetration fustion welding with high arcing time factor.
Further, described water power pipe 11 is provided with in the one end near isolation part 21 some first apopores 111 radially run through, the first water cavity 22 be connected with described first apopore 111 is provided with between the upper portion of described core bar 2 and water power pipe 11, the cooling water be sent to above tungsten electrode folder 3 by water power pipe 11 is made to flow into the first water cavity 22 via the first apopore 111, core bar 2 for carrying out current delivery fully can be cooled thus, ensureing the stable transfer of big current.
Described connecting seats 4 is provided with the through hole 41 running through up and down and pass for water power pipe 11.Described through hole 41 inwall is stepped design, thus described through hole 41 comprise collecting core bar 2 away from one end of tungsten electrode folder 3 first paragraph 411, to be connected with first paragraph 411 and the internal diameter second segment 412 identical with core bar 2 internal diameter, to be connected with second segment 412 and internal diameter three section 413 identical with water power pipe 11 external diameter.Wherein, described core bar 2 welds mutually with first paragraph 411, described second segment 412 inside is connected with the first water cavity 22 between core bar 2 and water power pipe 11, and on the internal face of second segment 412, be formed with the first water inlet 4121 of connection first water cavity 22, the cooling water flowing through the first water cavity 22 outwards can only be flowed out by the first water inlet 4121.
Described collets 7 are fixedly connected between water collar 6 and connecting seats 4 vertically, are mainly used in carrying out insulation processing to water collar 6.
Described water collar 6 has the base portion 61 that is tightly connected with collets 7 and the main part 62 that extends towards tungsten electrode 30 direction vertically from base portion 61 and main body 62 continue the fixed part 63 that extends.Described main part 62 external diameter is less than described base portion 61 and fixed part 63.The main part 62 that described shell 8 is sheathed on water collar 6 is peripheral, and upper end and base portion 61 lower end are tightly connected, and lower end is connected with fixed part 63 peripheral seal, thus makes to form the second water cavity 64 between described main part 62 and shell 8.Described connecting seats 4, collets 7 and the base portion 61 of water collar 6 are formed with the first intercommunicating pore 42 being communicated with described first water inlet 4121 and the second water cavity 64 and the second intercommunicating pore 43 being communicated with described second water cavity 64 and outlet pipe 12 jointly.
Described first intercommunicating pore 42 and the second intercommunicating pore 43 are radially symmetrical arranged, described main part 62 is also provided with the parting bead 621 radially between the first intercommunicating pore 42 and the second intercommunicating pore 43, described parting bead 621 extends vertically and is divided into into water cavity 641 and water chamber 642 by the second water cavity 64, described enter water cavity 641 and water chamber 642 lower end be interconnected, thus make to flow into the cooling water of the second water cavity 64 first via entering water cavity 641 through the first water inlet 4121 and the first intercommunicating pore 42, and then flowed out by water chamber 642, second intercommunicating pore 43 and outlet pipe 12.Cooling processing can be carried out to the periphery of TIG welding gun 100 of the present invention by this kind of setting, ensure the stable transfer of big current further.
The longitudinal cross-section and its gas circuit that have mainly cut protection tracheae 13 in Fig. 3 are communicated with design; shown in Fig. 1 and Fig. 3; described interior insulation sleeve 5 is between core bar 2 and water collar 6; wherein; be formed with the first air cavity 51 between the inwall of interior insulation sleeve 5 and core bar 2, outside wall surface and water collar 6 internal face recline and arrange.Described connecting seats 4, collets 7 are communicated with the third connecting hole 44 of described protection tracheae 13 and the first air cavity 51 with the base portion 61 of water collar 6 is formed.Described collets 7 upper and lower side is provided with sealing ring 72, to ensure that aqueous vapor is airtight in the position in the first intercommunicating pore 42, second intercommunicating pore 43 and third connecting hole 44.
Particularly, described collets 7 are provided with to downward-extension and are looped around the extension 71 around core bar 2.The support division supported with extension 71 lower end is formed inside the upper end of described interior insulation sleeve 5.Prominent muscle 611 is had towards the projection of shaft core position place inside base portion 61 upper end of described water collar 6, described prominent muscle 611 supports outside extension 71, thus make to be formed with gap 612 between the internal face below the prominent muscle 611 of water collar 6 and extension 71, the outlet in described third connecting hole 44 is connected with gap 612.Described extension 71 lower end is provided with the breach (not shown) of communication gap 612 and the first air cavity 51.Make the protective gas in described protection tracheae 13 via third connecting hole 44, gap 612, breach and sending in the first air cavity 51 thus.
In addition, incorporated by reference to shown in Fig. 1 to Fig. 3, described TIG welding gun 100 also comprises the nozzle 9 being fixed on water collar 6 lower end, and described nozzle 9 is arranged around described tungsten electrode folder 3, and around tungsten electrode presss from both sides 3, forming the second air cavity 91, described second air cavity 91 is connected with the first air cavity 51.
Particularly, described interior insulation sleeve 5 lower end inside is formed and the boss 52 be connected on the downside of described core bar 2.Described boss 52 is formed with some pores 521 being communicated with the first air cavity 51 and the second air cavity 91 up and down, described pore 521 is evenly arranged along core bar 2 circumferencial direction.The protective gas entering the second air cavity 91 via the first air cavity 51 can be made thus evenly can to shed along the surrounding of tungsten electrode folder 3 in mesh-like; and protective gas deflection is higher; more big current piercing welding be can adapt to, and the stable of electric arc and appearance of weld quality effectively can be ensured.
In addition, in the present embodiment, described protection tracheae 13 comprises the main tracheae 131 connecting outer protection source of the gas (not shown) and is arranged radially in the both sides of described water power pipe 11 two bronchuses, 132, two bronchuses 132 be connected with main tracheae 131.This kind of setting can make outside carry out gas to be divided into two after entering TIG welding gun 100 of the present invention, ensures uniform stream distribution.
As known from the above, water route Cooling Design special in TIG welding gun 100 of the present invention and current delivery design, conduction and cooling performance are significantly improved, when guaranteeing the continual and steady big current of carrying and weld, welding gun can not be hot, make that TIG welding gun 100 of the present invention has high arcing time factor, weld seam welding quality is high, welding penetration is large, speed is fast, can the workpiece of square groove through welding 3 to 12 millimeters, greatly save workpiece reset time and packing material, thus significantly enhance productivity, and longer service life.
Be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (9)
1. a TIG welding gun, it is characterized in that: described TIG welding gun comprises the water power pipe being positioned at shaft core position place, be arranged on the core bar of water power pipe periphery, be fixed on the tungsten electrode folder of core bar one end, be fixed on the core bar other end and the connecting seats be connected with water power pipe, be arranged at the water collar outside core bar, be fixedly connected on the collets between water collar and connecting seats vertically, the shell being fixed on water collar periphery and the outlet pipe be fixed on connecting seats, wherein, the position of the inner adjacent described tungsten electrode folder of described core bar is provided with isolation part, described water power pipe extends to position, described isolation part and the one end near isolation part is provided with the first apopore radially run through, the first water cavity be connected with described first apopore is provided with between described core bar and water power pipe, described connecting seats is provided with the first water inlet be connected with described first water cavity, the second water cavity is formed between described water collar and shell, described connecting seats and collets are formed with the first intercommunicating pore being communicated with described first water inlet and the second water cavity and the second intercommunicating pore being communicated with described second water cavity and outlet pipe.
2. TIG welding gun according to claim 1, it is characterized in that: described first intercommunicating pore and the second intercommunicating pore are radially symmetrical arranged, described water collar is provided with and protrudes in described second water cavity the second water cavity to be divided into the parting bead into water cavity and water chamber, described enter one end of pressing from both sides near tungsten electrode of water cavity and water chamber be interconnected, described first intercommunicating pore with enter water cavity and be connected, described second intercommunicating pore is connected with water chamber.
3. TIG welding gun according to claim 1, it is characterized in that: described connecting seats is provided with the through hole running through up and down and pass for water power pipe, described through-hole wall is stepped design, with make described through hole comprise one end of pressing from both sides away from tungsten electrode of collecting core bar first paragraph, to be connected with first paragraph and the internal diameter second segment identical with core bar internal diameter, to be connected with second segment and internal diameter three section identical with water power pipe external diameter, described first water inlet is arranged on second segment internal face.
4. TIG welding gun according to claim 1; it is characterized in that: described TIG welding gun also comprises the interior insulation sleeve be arranged between core bar and water collar and the protection tracheae be fixed on connecting seats; be formed with the first air cavity between described interior insulation sleeve and core bar, described connecting seats is communicated with the third connecting hole of described protection tracheae and the first air cavity with collets are formed.
5. TIG welding gun according to claim 4, it is characterized in that: described TIG welding gun also comprises the nozzle being fixed on water collar lower end, described nozzle ring is put around described tungsten electrode sandwiched, and forms the second air cavity around tungsten electrode folder, and described second air cavity is connected with the first air cavity.
6. TIG welding gun according to claim 5, it is characterized in that: described interior insulation sleeve lower end inside is formed and the boss be connected on the downside of described core bar, described boss is formed with some pores being communicated with the first air cavity and the second air cavity up and down, described pore is evenly arranged along core bar circumferencial direction.
7. TIG welding gun according to claim 4, is characterized in that: described protection tracheae comprises the main tracheae connecting outer protection source of the gas and two bronchuses be connected with main tracheae, and two bronchuses are arranged radially in the both sides of described water power pipe.
8. TIG welding gun according to claim 1, is characterized in that: described outlet pipe is connected with external power source simultaneously and is conduct electricity to arrange, and is electrically connected by connecting seats and core bar.
9. TIG welding gun according to claim 1, is characterized in that: described tungsten electrode folder internal fixtion has tungsten electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510567647.7A CN105171209B (en) | 2015-08-27 | 2015-09-09 | TIG welding guns |
Applications Claiming Priority (3)
| 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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| CN105171209A true CN105171209A (en) | 2015-12-23 |
| CN105171209B CN105171209B (en) | 2017-06-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983774A (en) * | 2016-06-24 | 2016-10-05 | 天津大学 | Water-cooling TIG welding gun with copper-coated tungsten electrode on basis of cathode compression effect |
| CN106077920A (en) * | 2016-06-24 | 2016-11-09 | 天津大学 | A kind of tungsten electrode internal water cooling TIG welding gun based on negative electrode 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 |
| CN107695492A (en) * | 2017-11-13 | 2018-02-16 | 昆山华恒焊接股份有限公司 | TIG welding guns |
| 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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| 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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| CN105171209B (en) | 2017-06-06 |
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