CN105537739A - Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device - Google Patents
Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device Download PDFInfo
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- CN105537739A CN105537739A CN201610103536.5A CN201610103536A CN105537739A CN 105537739 A CN105537739 A CN 105537739A CN 201610103536 A CN201610103536 A CN 201610103536A CN 105537739 A CN105537739 A CN 105537739A
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- magnetic control
- negative electrode
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- 238000003466 welding Methods 0.000 title claims abstract description 82
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 title abstract description 7
- 238000007906 compression Methods 0.000 title abstract description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 53
- 239000010937 tungsten Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims description 37
- 239000000498 cooling water Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 28
- 239000011261 inert gas Substances 0.000 claims description 25
- 210000002583 cell-derived microparticle Anatomy 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 12
- 102000010637 Aquaporins Human genes 0.000 claims description 8
- 108010063290 Aquaporins Proteins 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000010891 electric arc Methods 0.000 abstract description 9
- 230000035515 penetration Effects 0.000 description 6
- 108091006146 Channels Proteins 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 electricity Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 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
- B23K9/32—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Abstract
The invention belongs to the technical field of welding devices, and relates to a negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device. The welding device comprises a tungsten electrode, a welding torch outer body, a conductive body, a conductive nozzle, a conductive bar and a gas cover. The tungsten electrode is clamped by a tungsten electrode clamp. The conductive nozzle is fixed to the conductive body. The conductive body is assembled in the welding torch outer body. The upper end and the lower end of the conductive body are provided with an upper insulating sleeve and a lower insulating sleeve respectively. The gas cover is fixed to the outer side of the welding torch outer body. The conductive bar is connected with the conductive body. A magnetizer is arranged on the gas cover and fixed to the gas cover. An insulating limiting sleeve is arranged outside the magnetizer. A magnetic control coil is evenly wound on the insulating limiting sleeve. By means of the negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device, through the forced cooling of a negative electrode and an electromagnetic compression effect on an electric arc, the electric arc in the welding process is in a restraint state, large-melting-depth locking hole welding under non-groove conditions of a thick-wall component is achieved, and high-quality weld joints are obtained.
Description
Technical field
The invention belongs to technical field of welding equipment, relate to a kind of negative electrode and force cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder.
Background technology
Argon tungsten-arc welding (also claiming TIG weldering) is the abbreviation of " tungsten arc inert-gas welding (TIG welding) " (TungstenInertGasarcWelding); its principle produces welding arc by infusible tungsten electrode to fill or filler wire does not finally make workpiece to be welded reach connection between metallic atom, is mainly used in the welding of carbon steel, stainless steel, aluminium alloy and other nonferrous materials.Traditional TIG welds welding process and stablizes, and well, because its fusion penetration is shallow, welding efficiency is low, traditional TIG weldering is general only for the welding of thin-wall member and the backing welding of thick large component for appearance of weld and quality of weld joint.
The shallow drawback of fusion penetration is welded for traditional TIG, lockhole effect TIG weldering is arisen at the historic moment, its principle is the piercing welding by realizing the thick material of 3-16mm under big current effect to the powerful cooling effect of tungsten electrode and gas hood, and welding process does not need filler wire, and welding efficiency is greatly improved.Domestic patent of invention 201420318497.7 discloses a kind of lockhole effect TIG deep penetration welding welding gun, the basis of traditional TIG welding gun devises the pressure cooling system of tungsten electrode and gas hood, achieves the deep penetration welding of lockhole effect by big current TIG mode.
Said method is by means of only to the cooling of tungsten electrode and gas hood thus the mode obtaining big current reaches the object of lockhole effect, and arc pressure mainly relies on big current to maintain, and linear, easily occurs shielding gas flow disturbance, affect protected effect in welding process; Secondly, due to defects such as flowing insufficient easy generation weld reinforcement in speed of welding very fast molten bath is comparatively large, undercuts, therefore above method is restricted for aspects such as raising weldquality aspect, optimizing welding process, expansion small-bore TIG (tungsten inert gas) welding applicabilities.
Summary of the invention
The object of the invention is to overcome existing TIG weld and dark molten TIG to weld range of application little, appearance of weld is poor, the defects such as undercut, force cooling and radial magnetic field to the radial compression effect of welding arc by negative electrode, TIG arc energy density is improved further, improve the applicability that lockhole TIG welds, and charged particle is subject to Lorentz force effect helically downward High Rotation Speed state in radial magnetic field in electric arc, mechanical agitation can be carried out to molten bath, be conducive to the gas effusion in molten bath and sprawl shaping, overcoming, postwelding weld seam is lack of penetration, shaping difference, the aspects such as undercut obtain good effect.
For achieving the above object, the technical solution used in the present invention is: a kind of negative electrode forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, comprises tungsten electrode, welding torch ectosome, electric conductor, ignition tip, contact rod, gas hood; Described tungsten electrode is accommodated by tungsten electrode folder, is fixed on electric conductor by ignition tip; Described electric conductor is assemblied in welding torch ectosome, and its upper/lower terminal is separately installed with upper and lower insulating sleeve; Gas hood is fixed on the outer external body of welding torch, and contact rod is connected with electric conductor; Gas hood is provided with magnetic conductor, and described magnetic conductor is fixed on gas hood; Magnetic conductor outside is provided with insulation stop collar; On insulation stop collar, uniform winding has magnetic control coil; The two ends of magnetic control coil connect cooling water inlet pipe and cooling water outlet pipe respectively.
Described lower insulating sleeve and electric conductor, and be equipped with O RunddichtringO between lower insulating sleeve and welding torch ectosome, lower insulating sleeve is respectively and form two water channels between electric conductor and welding torch ectosome; Lower insulating sleeve connects cooling water inlet pipe, and welding torch ectosome connects cooling water outlet pipe; Two aquaporins are connected by the through hole that lower insulating sleeve is offered.By the circulation of cooling water between two aquaporins, tungsten electrode and welding torch are cooled.
Between gas hood and welding torch ectosome, insulation sleeve is installed.
Described tungsten electrode end is symmetric pyramid, and diameter is 6mm, and end cone angle is 60 °.
The two ends of magnetic control coil connect cooling water inlet pipe and cooling water outlet pipe respectively, are reached the object of cooling coil by cooling water at magnetic control coil Inner eycle.
Described magnetic control coil method is the copper tube of diameter 6mm, and every layer line turn separation is 2mm, compresses welding arc when producing longitudinal alternating magnetic field after coil access alternating source.
The magnetic control power supply that described coil uses has direct current and exchanges two kinds of excitation modes, and under exchange status, output frequency is adjustable in 500-5000Hz, and duty is constant current mode.
Described magnetic conductor is Q235 material, and magnetic control coil, magnetic conductor, gas hood, welding torch ectosome, electric conductor, tungsten electrode are the coaxial configuration set gradually from outside to inside.
Described upper and lower insulating sleeve is high-strength insulating plastics, and insulation sleeve is ceramic material.
Negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, cooling and the electromagnetic compression effect to electric arc is forced by anticathode, the electric arc in welding process is made to be restrained situation, can obtain that energy density is concentrated, the TIG electric arc of High Rotation Speed, the large fusion penetration lockhole welding under heavy wall component square groove condition can be realized, obtain high-quality weld seam, significantly can promote welding efficiency and save welding cost greatly, there is huge industrial application value.
Accompanying drawing explanation
Fig. 1 is that negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder center axial section;
Fig. 2 is that negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder welding process schematic diagram.
Detailed description of the invention
Force cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welding equipment below in conjunction with accompanying drawing and specific embodiment to negative electrode of the present invention to be described in detail.
As shown in Figure 1, negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, comprise tungsten electrode 7, welding torch ectosome, electric conductor 5, ignition tip 13, contact rod 18, gas hood 11, tungsten electrode 7 is accommodated by tungsten electrode folder 14, and be fixed on electric conductor 5 by ignition tip 13, electric conductor 5 is assemblied in welding torch ectosome 3, on it, lower two ends are separately installed with insulating sleeve 4, lower insulating sleeve 6, top end cover 1 is carried out radial direction to welding torch ectosome 3 internals and is fixed under the effect of top locking nut 2, it is outside that gas hood 11 is fixed on welding torch ectosome 3, insulation sleeve 15 is installed between gas hood 11 and welding torch ectosome 3.Contact rod 18 is connected with electric conductor 5, and protection tracheae 19 is connected with upper insulating sleeve 4.
Magnetic conductor 10 is fixed on gas hood 11 by holddown plate 12; Magnetic conductor 10 outside is provided with insulation stop collar 8; On insulation stop collar 8, uniform winding has magnetic control coil 9; The two ends of magnetic control coil 9 connect cooling water inlet pipe 17 and cooling water outlet pipe 16 respectively.Coil method is the copper tube of diameter 6mm, and every layer line turn separation is 2mm, passes into cooling water in copper tube, by cooling water in the cooling of copper tube Inner eycle realization to coil.When producing longitudinal alternating magnetic field after coil access alternating source, welding arc is compressed.
Lower insulating sleeve 6 and electric conductor 5, and be equipped with O RunddichtringO between lower insulating sleeve 6 and welding torch ectosome 3, lower insulating sleeve 6 is respectively and form two aquaporins between electric conductor 5 and welding torch ectosome 3; Lower insulating sleeve 6 connects cooling water inlet pipe 17, and welding torch ectosome 3 connects cooling water outlet pipe 17; Two aquaporins are connected by the through hole that lower insulating sleeve 6 is offered, and carry out circulating cooling respectively to tungsten electrode and welding torch.
It is symmetric pyramid that negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder tungsten electrode end, and diameter is 6mm, and end cone angle is 60 °.
Negative electrode of the present invention force cooling and magnetic control to compress magnetic control power supply that synergy formula small-bore TIG (tungsten inert gas) welder coil uses has direct current and exchanges two kinds of excitation modes, under exchange status, output frequency is adjustable in 500-5000Hz, and duty is constant current mode.
It is Q235 material that negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder magnetic conductor, and coil, magnetic conductor, gas hood, welding torch ectosome, electric conductor, tungsten electrode are the coaxial configuration set gradually from outside to inside.
Negative electrode of the present invention is forced cooling and magnetic control to compress the upper and lower insulating sleeve of synergy formula small-bore TIG (tungsten inert gas) welder and is high-strength insulating plastics, and insulation sleeve 15 is ceramic material.
Negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, and Austria's too WSME-630 type welding machine selected by the source of welding current, and pulse current, frequency during DC reverse connection, dutycycle is adjustable.Magnetic control power supply is self-control power supply, and excitation mode can select direct current and exchange way, and under exchange way, alternative frequency is adjustable within the scope of 500-5000Hz.Cooling cyclic water equipment selects CW-5300 type cooling-water machine, and cooling water minimum temperature can reach 1.5 DEG C.
Negative electrode of the present invention forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, and operation principle is as follows:
Gas channels: protective gas enters through protection tracheae 19, flows out by electric conductor 5 inner chamber and at gas port place, electric conductor lower end and enters gas hood 11 inside, protect during welding to tungsten electrode.
Conductive channel: the source of welding current is fixedly connected with contact rod 18, conductive channel is formed after contact rod 18, electric conductor 5, tungsten electrode folder 14, ignition tip 13 and tungsten electrode 7 connect, and insulated with welding torch ectosome by upper insulating sleeve 4 and lower insulating sleeve 6, during welding, welding current forms welding arc and smooth combustion between tungsten electrode tip and workpiece.
Cooling water recirculation system: cooling-water machine delivery port is connected with cooling water inlet pipe 17 and magnetic control coil 9 upper end, cooling water outlet pipe 16 and magnetic control coil 9 lower end are connected with cooling-water machine water inlet, cooling water circulates through magnetic control coil 9, forms a road cooling water recirculation system, cools magnetic control coil.Cooling water flows through lower insulating sleeve 6 and electric conductor 5, circulating water channel between lower insulating sleeve 6 and welding torch ectosome 3 respectively through cooling water inlet pipe 17, finally flow out from cooling water outlet pipe 16, form another road cooling water recirculation system, tungsten electrode and welding torch are cooled.
Magnetic control system: magnetic control power supply is connected with magnetic control coil 9 two ends respectively, the exciting current that during work, magnetic control power supply produces produces longitudinally after magnetic control coil or longitudinal alternating magnetic field has an impact to welding arc and molten bath.
After setting up water, electricity, gas connection during welding successively, first open cooling water recirculation system, start magnetic control power supply, the source of welding current, welding after setting suitable parameter, can be started.As shown in Figure 2, in welding process, electric arc is concentration of energy under the compression of radial magnetic field, is formed stable to penetrate lockhole in front, molten bath; Under Lorentz force effect, electric arc High Rotation Speed stirs molten bath simultaneously; Secondly, under DC pulse effect, electric arc produces periodic oscillation action to the molten metal in molten bath.Under the comprehensive function of above factor, can reach and promote that gas is overflowed from molten bath, reduce pore, the effect of crystal grain thinning, and then obtain quality weld.
After having welded, close magnetic control power supply, the source of welding current, protection gas, cooling water system successively.
Claims (9)
1. negative electrode forces cooling and magnetic control to compress a synergy formula small-bore TIG (tungsten inert gas) welder, comprises tungsten electrode, welding torch ectosome, electric conductor, ignition tip, contact rod, gas hood; Described tungsten electrode is accommodated by tungsten electrode folder, is fixed on electric conductor by ignition tip; Described electric conductor is assemblied in welding torch ectosome, and its upper/lower terminal is separately installed with upper and lower insulating sleeve; Gas hood is fixed on the outer external body of welding torch, and contact rod is connected with electric conductor; It is characterized in that: gas hood is provided with magnetic conductor, described magnetic conductor is fixed on gas hood; Magnetic conductor outside is provided with insulation stop collar; On insulation stop collar, uniform winding has magnetic control coil.
2. negative electrode according to claim 1 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: described lower insulating sleeve and electric conductor, and being equipped with O RunddichtringO between lower insulating sleeve and welding torch ectosome, lower insulating sleeve is respectively and form two aquaporins between electric conductor and welding torch ectosome; Lower insulating sleeve connects cooling water inlet pipe, and welding torch ectosome connects cooling water outlet pipe; Two aquaporins are connected by the through hole that lower insulating sleeve is offered.
3. negative electrode according to claim 2 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: between gas hood and welding torch ectosome, be provided with insulation sleeve.
4. negative electrode according to claim 2 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, and it is characterized in that: described tungsten electrode end is symmetric pyramid, diameter is 6mm, and end cone angle is 60 °.
5. the negative electrode according to any one of Claims 1-4 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: the two ends of magnetic control coil connect cooling water inlet pipe and cooling water outlet pipe respectively, at magnetic control coil Inner eycle, coil is cooled by cooling water.
6. the negative electrode according to any one of Claims 1-4 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: described magnetic control coil method is the copper tube of diameter 6mm, and every layer line turn separation is 2mm.
7. the negative electrode according to any one of Claims 1-4 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: the magnetic control power supply that described magnetic control coil uses has direct current and exchanges two kinds of excitation modes; Under exchange status, output frequency is adjustable in 500-5000Hz, and duty is constant current mode.
8. the negative electrode according to any one of Claims 1-4 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: described magnetic conductor is Q235 material.
9. negative electrode according to claim 3 forces cooling and magnetic control to compress synergy formula small-bore TIG (tungsten inert gas) welder, it is characterized in that: insulation sleeve is ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103536.5A CN105537739A (en) | 2016-02-25 | 2016-02-25 | Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610103536.5A CN105537739A (en) | 2016-02-25 | 2016-02-25 | Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device |
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| CN201610103536.5A Pending CN105537739A (en) | 2016-02-25 | 2016-02-25 | Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695086A (en) * | 2016-12-15 | 2017-05-24 | 天津大学 | Magnetic control K-TIG welding gun based on water-cooled permanent magnets |
| CN106735781A (en) * | 2016-12-14 | 2017-05-31 | 天津大学 | A kind of magnetic control K TIG welding guns based on electromagnet cusp magnetic fields |
| CN107052533A (en) * | 2016-12-15 | 2017-08-18 | 天津大学 | A kind of magnetic control K TIG welding guns based on permanent magnet array |
| 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 |
| CN109366021A (en) * | 2018-09-12 | 2019-02-22 | 费杰福 | A kind of laminar flow plasma water cutting gun |
| CN110625226A (en) * | 2019-10-08 | 2019-12-31 | 华南理工大学 | K-TIG deep fusion welding control system and method under action of composite magnetic field |
| CN113263246A (en) * | 2021-05-19 | 2021-08-17 | 太原科技大学 | Magnetic control welding set based on alternating magnetic field |
| CN114734118A (en) * | 2022-02-24 | 2022-07-12 | 华南理工大学 | Micro-area strong-drainage tungsten TIG (tungsten inert gas) welding torch for underwater local dry operation |
| CN116275413A (en) * | 2023-03-15 | 2023-06-23 | 哈尔滨工业大学 | Narrow-gap GTAW welding gun capable of synchronously swinging wire arcs |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106735781A (en) * | 2016-12-14 | 2017-05-31 | 天津大学 | A kind of magnetic control K TIG welding guns based on electromagnet cusp magnetic fields |
| CN106735781B (en) * | 2016-12-14 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on electromagnet cusp magnetic fields |
| CN106695086A (en) * | 2016-12-15 | 2017-05-24 | 天津大学 | Magnetic control K-TIG welding gun based on water-cooled permanent magnets |
| CN107052533A (en) * | 2016-12-15 | 2017-08-18 | 天津大学 | A kind of magnetic control K TIG welding guns based on permanent magnet array |
| CN106695086B (en) * | 2016-12-15 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on water-cooling permanent magnet iron |
| CN107052533B (en) * | 2016-12-15 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on permanent magnet array |
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