CN106312270A - Coaxial hollow tungsten electrode TIG device and welding gun thereof, using method and application - Google Patents
Coaxial hollow tungsten electrode TIG device and welding gun thereof, using method and application Download PDFInfo
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- CN106312270A CN106312270A CN201610998677.8A CN201610998677A CN106312270A CN 106312270 A CN106312270 A CN 106312270A CN 201610998677 A CN201610998677 A CN 201610998677A CN 106312270 A CN106312270 A CN 106312270A
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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
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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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- 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
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- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a coaxial hollow tungsten electrode TIG device and a welding gun thereof, a using method and application and belongs to the technical field of electric arc additive manufacturing. The welding gun of the TIG device comprises a gun body and a hollow tungsten electrode, wherein the front end of the gun body is provided with a ceramic nozzle. The gun body is internally provided with a protective air cavity, and an air inlet hole communicated with the protective air cavity is formed in the gun body and used for being connected with an air source. The hollow tungsten electrode is arranged in the gun body, the front end of the hollow tungsten electrode extends out of the ceramic nozzle, and the middle of the hollow tungsten electrode is provided with a hollow wire feeding cavity. The side wall of the hollow tungsten electrode is provided with an air hole, and the air hole enables the wire feeding cavity of the hollow tungsten electrode to be communicated with the protective air cavity of the gun body. The welding gun is good in welding wire preheating effect, an additive manufacturing cracking phenomenon is avoided, the deposition efficiency is high, the welding speed is quick, weld defects are fewer, and the welding quality is high. According to the device, superspeed and high-quality electric arc additive manufacturing can be performed, and the device is particularly suitable for additive manufacturing of active metals such as copper and aluminum as well as alloy thereof. According to the using method, high quality weld joints can be obtained, and the welding quality is improved.
Description
Technical field
The invention belongs to electric arc and increase material manufacturing technology field, relate to a kind of electric arc that is applicable to and increase the coaxial hollow tungsten that material manufactures
Pole TIG welder, applies this device to be capable of large-size components high-quality based on TIG electric arc and efficiently increases material manufacture process,
More particularly, it relates to a kind of coaxial hollow tungsten electrode TIG welder and welding gun, using method and application.
Background technology
This welding method of TIG is owing to using inert gas shielding, and arc burning quite stable, weldquality is the most excellent
Different, it is high-end industrial department welding product and the welding technique of precision parts first-selection.But, traditional TIG weldering due to
The current capacity of its electrode is limited, and arc power is by a definite limitation, and uses paraxonic wire feed, and weld penetration is shallow, welding is fast
Spend little.Based on the problems referred to above, people grow up a kind of hot wire TIG welding on this basis, and it is a kind of high-quality, efficient, energy-conservation
Welding procedure, its ultimate principle is exactly to be sent into before molten bath at welding wire, heats welding wire and reaches certain preheating
Temperature, finally realizes the purpose of high-speed and high-efficiency welding.But in hot wire TIG welding, welding wire is preheated the external electricity of basic employing
The mode of resistance heating, at welding wire above with electric current, utilizes the resistance heat production of welding wire self thus realizes the preheating to welding wire,
Resistance heating heated filament during will produce several big technological problems, be respectively arc blow, heated filament feeding position fluctuation, welding wire enter melt
Before pond, oxidation is difficult to control to, and easily produces cracking phenomena when increasing material and manufacturing.
In hot wire TIG welding, if the extension elongation of welding wire is e, the cross-sectional area of welding wire is S, the resistivity of solder wire material
For ρ, the thermocurrent that adds of welding wire is Iw, then resistance heat power P R produced on welding wire is: PR=(I2ρe)/S.Can be seen that, when
When the diameter of welding wire resistivity very big, solder wire material is the lowest, the power of resistance heating will not reach the preheating temperature of welding wire heating
Degree, so method is only applicable to big resistivity, the situation of relatively thin welding wire heating, is difficult to the high conductivity material such as copper, aluminum
In welding, the electric current efficiency of heating surface is low, and welding wire does not reaches suitable temperature.Therefore, in the urgent need to hot wire TIG welding for copper alloy,
Lifting in terms of hot compress efficiency, pre-heat effect, weldquality during Welded.
For the drawbacks described above overcoming TIG to weld, domestic and international research worker has been done substantial amounts of work, has been emerged multiple TIG weldering weldering
Connection technology.Such as, Chinese Patent Application No. is: 201010233844.2, and publication date is: the patent literary composition on November 24th, 2010
Offer, disclose a kind of narrow-clearance heating wire TIG welding gun, including welding gun angle swing device, front protection device of supplying gas, back of the body protection gas hood device
And wire feeder, front protection device of supplying gas is connected on welding gun angle swing device, and wire feeder and back of the body protection gas hood device connect simultaneously
Being connected on the shell of welding gun angle swing device, welding gun angle swing device includes motor, driving gear, transition gear, angle swing gear
With angle swing barral of a gun, driving gear is fixed on the output shaft of motor, transition gear respectively with driving gear and angle swing gear
Engagement, angle swing barral of a gun is fixed on the center of angle swing gear, is outside equipped with the water cooling tube of connection in it.The program focuses in improving weldering
T-Ring border, reduce labor strength, heighten work efficiency, but its hot wire structure is complex, causes welding gun structure too fat to move
Complexity, meanwhile, is also not suitable for the welding of the high conductive materials such as copper, aluminum and alloy thereof.
At present, the electric arc using TIG weldering increases material manufacturing technology and receives significant attention.Increasing material manufacture is the surface at workpiece
Or edge carries out the welding procedure of the function metals layers such as deposition one layer is wear-resisting, anti-corrosion, heat-resisting.Increase material manufacture and make improving part
With life-span, reasonable employment material, enhancing product performance, reducing cost has significant economic benefit.Increase material and be manufactured as material list
Modified a kind of economic in face and quick process, be applied to the manufacture reparation of each industrial department part more and more widely
In, mainly there are laser melting coating, arc surfacing etc..Traditional TIG weldering electric arc increase the problem being most commonly encountered in material manufacture precisely due to
The cracking that deposition position residual stress is excessive and causes, there is presently no the method effectively solving this problem.
Summary of the invention
1, problem to be solved
Being welded in electric arc for tradition TIG, to increase time of staying length, deposition efficiency when material manufactures low, and deposition position stress is excessive to be opened
The problem such as splitting, the invention provides a kind of coaxial hollow tungsten electrode TIG welder and welding gun thereof, this welding gun uses the electricity of coaxial heated filament
Arc deposition techniques, has the advantage such as homogeneous heating, spray transfer, can realize ultrahigh speed, the increasing material manufacture of high-quality electric arc, the suitableeest
Increasing material together in active metals such as copper, aluminum and alloys thereof manufactures.It addition, for convenience of welding operation, present invention also offers this dress
The using method put.
2, technical scheme
For solving the problems referred to above, the present invention adopts the following technical scheme that.
A kind of coaxial hollow tungsten electrode TIG welding gun, including gun body, gun body front end arranges porcelain mouth, it is characterised in that: also include sky
Heart tungsten electrode；Having protection air cavity inside described gun body, gun body is provided with and the air inlet protecting air cavity to connect, and air inlet is used for
Connect source of the gas；Described hollow tungsten electrode is arranged in gun body, and its front end is stretched out from porcelain mouth, and the centre of hollow tungsten electrode is sending of hollow
Silk chamber；Being provided with passage on the sidewall of described hollow tungsten electrode, it is by the protection air cavity in the wire feed chamber of hollow tungsten electrode Yu gun body
Connection.
Further, the front end of described hollow tungsten electrode is provided with horn mouth.
A kind of coaxial hollow tungsten electrode TIG welder, including welding gun, described welding gun uses above-mentioned coaxial hollow tungsten electrode
TIG welding gun.
Further, wire feeder is also included；Welding wire is sent into wire feed by described wire feeder from the rear end of hollow tungsten electrode
In chamber, and stretch out from the front end of hollow tungsten electrode.
Above-mentioned coaxial hollow tungsten electrode TIG welder, the electric arc at copper, aluminum and alloy thereof increases the application during material manufactures.
The using method of a kind of coaxial hollow tungsten electrode TIG welder, the steps include: first to adjust welding gun workpiece the most to be welded
The position of soldered；Then, welding wire is sent in the wire feed chamber of hollow tungsten electrode；Connect source of the gas by the air inlet of gun body again, protect
Protect gas and enter protection air cavity, and spray from porcelain mouth, form protective atmosphere；Meanwhile, the protection gas in protection air cavity is entered by passage
Enter the wire feed chamber of hollow tungsten electrode, emptying inner air, make welding wire be in protective atmosphere；Then, the source of welding current is connected, hollow
The starting the arc between tungsten electrode and the soldered of workpiece, forms molten bath, starts welding, and in welding process, welding wire is subject to before entering molten bath
Preheat to hollow tungsten electrode heat radiation, arc heat；At the end of welding, blow-out successively, stopping wire feed, disconnection protection gas, close
The source of welding current, completes welding operation.
3, beneficial effect
Compared to prior art, the invention have the benefit that
(1) the welding gun structure deft design of the present invention is reasonable and original, changes the solid tungsten electrode of tradition TIG weldering into sky
Heart tungsten electrode, welding wire is carried by hollow tungsten electrode in rifle, uses gun body delivered inside supply, and the passage on hollow tungsten electrode enters
Inside hollow tungsten electrode, and use wire feeder can realize automatic feeding, this welding gun welding wire enter carry out before molten bath preheating gentle
Body is protected, and is greatly improved pre-heat effect and avoids increasing the cracking phenomena produced because of Preheating in material manufacture process, decreasing
The energy of arc-melting welding wire, improves deposition efficiency, speed of welding, reduces the generation of the weld defects such as H pore, improves weld seam
Quality；
(2) toroidal is made in hollow tungsten electrode end by the welding gun of the present invention, increases hollow tungsten electrode end cross-sectional and amasss, so
Bigger electric current can be carried, export the electric arc of more power, and according to different electric arc outputs, available heated filament temperature
Degree scope is widened significantly than traditional heated filament；
(3) coaxial hollow tungsten electrode TIG welder of the present invention, can realize ultrahigh speed, the increasing material manufacture of high-quality electric arc, the suitableeest
Increasing material together in active metals such as copper, aluminum and alloys thereof manufactures；According to the using method of the present invention, the weldering to quality can be obtained
Seam, improves welding quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of coaxial hollow tungsten electrode TIG welding gun of the present invention；
Fig. 2 is the operation principle schematic diagram of coaxial hollow tungsten electrode TIG welder of the present invention.
Wherein: 1, gun body；2, hollow tungsten electrode；3, welding wire；4, air inlet；5, passage；6, porcelain mouth；7, horn mouth；8, protect
Protect air cavity；9, wire feed chamber；10, wire feeder；11, wire reel.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further described below.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of coaxial hollow tungsten electrode TIG welder of the present embodiment, including welding gun and wire feeder
10；Wherein, welding gun includes that gun body 1 and hollow tungsten electrode 2, gun body 1 front end arrange porcelain mouth 6, and gun body 1 is internal has protection air cavity 8, rifle
The rear end of body 1 is provided with and the air inlet 4 protecting air cavity 8 to connect, and air inlet 4 is used for connecting source of the gas；Hollow tungsten electrode 2 is arranged on rifle
In body 1, its front end is stretched out from porcelain mouth 6, the wire feed chamber 9 that centre is hollow of hollow tungsten electrode 2, and the diameter in wire feed chamber 9 is than welding wire 3
The big 1mm of diameter；Being provided with passage 5 on the sidewall of hollow tungsten electrode 2, it is by the guarantor in the wire feed chamber 9 of hollow tungsten electrode 2 with gun body 1
Protect air cavity 8 to connect.
This welding gun changes the solid tungsten electrode of tradition TIG weldering into hollow tungsten electrode 2, and welding wire 3 is by the wire feed chamber in hollow tungsten electrode 2
9 conveyings, use gun body 1 delivered inside supply, and the passage 5 on hollow tungsten electrode 2 enters in the wire feed chamber 9 of hollow tungsten electrode 2；?
During welding, after the striking of hollow tungsten electrode 2, temperature raises, and the welding wire 3 being in wire feed chamber 9 is at hollow tungsten electrode 2 heat radiation and arc heat
Effect under can carry out pre-heating temperature elevation entering before molten bath, compared to traditional, welding wire is electrically heated, it is not necessary to additionally add
Adding single heater supply, be greatly improved pre-heat effect, reduce energy consumption, structure is the most simpler, and production cost is low, heavier
The problem being that of avoiding arc blow wanted, decreases the energy of arc-melting welding wire, to welding wire 3 homogeneous heating, can form jet
Transition, reduces heating dwell times, it is achieved ultrahigh speed, high-quality electric arc increase material manufacture, improves deposition efficiency, welding speed
Degree, reduces the generation of the weld defects such as H pore, improves weldquality, is particularly suited for the low electrical resistant materials such as copper, aluminum and alloy thereof
Increasing material manufacture welding, weld preheating improve welding temperatures at localized regions field distribution, effectively reduce deposition position remnants should
Power, can be prevented effectively from and increase the cracking phenomena produced because of Preheating in material manufacture process.It addition, the welding wire 3 being in wire feed chamber 9
It is in protective atmosphere, it is to avoid oxidized after welding wire 3 preheating.What deserves to be explained is, hollow tungsten electrode 2 has certain length, welding wire 3
Can carry out from dynamic(al) correction in wire feed chamber 9, and make the welding wire after thermoplastic 3 keep straight state, welding wire 3 enters position, molten bath
Put degree of accuracy high, will not offset, it is to avoid the generation of existing TIG welding heat silk feeding position fluctuation situation, especially in wire feed chamber 9
Diameter than welding wire 3 diameter big 1mm time, while welding wire 3 is formed protective atmosphere welding wire 3 wire feed fluctuation can reach minimum,
Wire feed effect is best.
Additionally, in the present embodiment, the front end of hollow tungsten electrode 2 is provided with horn mouth 7, increases hollow tungsten electrode 2 end cross-sectional
Long-pending, so can carry bigger electric current, striking is big, the electric arc of output more power, and deposition rate is fast, and molten bath is deep, the suitableeest
For increasing material manufacture；And according to different electric arc outputs, available hot-wire temperature's scope is widened significantly than traditional heated filament.
The angle of the preferred horn mouth of the present embodiment 7 is 45 °, takes into account protection atmosphere and the end cross-sectional of hollow tungsten electrode 2 exit welding wire 3
Long-pending, resultant effect is good.
In the present embodiment, wire feeder 10 includes pair of driving wheels and wire reel 11, pair of driving wheels be arranged at welding gun with
Between wire reel 11, the welding wire 3 on wire reel 11 is sent into wire feed chamber 9 from the rear end of hollow tungsten electrode 2 after driving wheel, and from
The front end of hollow tungsten electrode 2 is stretched out.Pair of driving wheels is symmetrical arranged, and rotates backward, the gap between its edge and the diameter of welding wire 3
Equal, thus welding wire 3 is held between driving wheel and is conveyed into hollow tungsten electrode 2 with the rotation of driving wheel, for welding
Continue wire feed, it is achieved the automatization of wire feed process.
The above-mentioned protection gas being previously mentioned is conventional noble gas, can be argon, helium, nitrogen, hydrogen and titanium dioxide
Carbon gas etc..
For using above-mentioned coaxial hollow tungsten electrode TIG welder to realize the welding of high-effect high-quality, its user is given below
Method.
The using method of a kind of coaxial hollow tungsten electrode TIG welder, the steps include: first to adjust welding gun workpiece the most to be welded
The position of soldered；Then, during welding wire 3 is sent into the wire feed chamber 9 of hollow tungsten electrode 2 by wire feeder 10；Again by the air inlet of gun body 1
Source of the gas is connected in hole 4, and protection gas enters protection air cavity 8, and sprays from porcelain mouth 6, forms protective atmosphere；Meanwhile, in protection air cavity 8
Protection gas is entered the wire feed chamber 9 of hollow tungsten electrode 2, emptying inner air by passage 5, makes welding wire 3 be in protective atmosphere；Connect
, connect the source of welding current, the starting the arc between hollow tungsten electrode 2 and the soldered of workpiece, form molten bath, start welding, welding
Cheng Zhong, welding wire 3 is preheated by hollow tungsten electrode 2 heat radiation, arc heat before entering molten bath；At the end of welding, blow-out successively,
Stop wire feed, disconnect protection gas, close the source of welding current, complete welding operation.
In order to more embody what the present embodiment welder was had in copper, aluminum and alloy thereof weld increasing material manufacture
The effect above, illustrates below in conjunction with concrete example.
Application examples 1
The coaxial hollow tungsten electrode TIG welder and the method that use embodiment 1 carry out butt welding welding to 10mm thickness copper coin, welding
Each parameter is: weld seam opens single V groove with root face, a width of 10mm of weld seam, a diameter of 5mm of selected copperwelding rod, and the external diameter of hollow tungsten electrode 2 is
8mm, a diameter of 6mm in wire feed chamber 9, protective gas uses helium, and during welding, throughput is 20L/min, and DC current is 350A,
Wire feed rate is 60m/h, and speed of welding is 10m/h.Postwelding butt welded seam detects, face of weld pore-free and slag inclusion, solderless
Dripping attachment, flawless and arc scratch, weld seam and mother metal rounding off, joint is even directly, without pit misalignment, shrinks without root, weldering
Seam reinforcement is at 1.4 ± 0.1mm, and weldquality is high, meets the requirements.
Use existing general T IG to weld, and use welding parameter same as described above, the weld seam obtained is detected, send out
Existing weld seam oxidation is more serious, and pore occur in many places, surface, have fine cracks and arc scratch vestige, and weld seam is uneven, deposits
In the defect such as lack of penetration, incomplete fusion, appearance of weld be bad, weldquality is poor, undesirable.Show that drawbacks described above is through analyzing
Due to welding wire preheating not, welding wire aoxidizes, and speed of welding is too fast etc., and reason causes.
Application examples 2
The coaxial hollow tungsten electrode TIG welder and the method that use embodiment 1 carry out docking welding, welding to the aluminium sheet of 5mm
Each parameter is: I shape weld seam, and weld seam size is 3mm, a diameter of 3mm of selected aluminium welding wire, and the external diameter of hollow tungsten electrode 2 is 6.5mm,
A diameter of 4mm in wire feed chamber 9, protective gas uses argon, and during welding, throughput is 20L/min, and alternating current is 300A, wire feed
Speed is 85m/h, and speed of welding is 20m/h.Postwelding butt welded seam detects, face of weld pore-free and slag inclusion, and solderless is dripped attached
, flawless and arc scratch, weld seam and mother metal rounding off, joint is even directly, without pit misalignment, shrinks without root, more than weld seam
High at 1.0 ± 0.1mm, weldquality is high, meets the requirements.
Use existing general T IG to weld, and use welding parameter same as described above, the weld seam obtained is detected, send out
Existing weld seam oxidation is more serious, and pore occur in many places, surface, have fine cracks and arc scratch vestige, and weld seam is uneven, deposits
In the defect such as lack of penetration, incomplete fusion, appearance of weld be bad, weldquality is poor, undesirable.Show that drawbacks described above is through analyzing
Due to welding wire preheating not, welding wire aoxidizes, and speed of welding is too fast etc., and reason causes.
Application examples 3
The coaxial hollow tungsten electrode TIG welder and the method that use embodiment 1 are carried out on the substrate of 5mm × 20mm × 20mm
The TIG of 4043 aluminum alloy parts increases material manufacture, manufactured product be cross section be the wall of rectangle, a length of 100mm, wall thickness is about
For 7mm, height is 50mm.Welding parameter is: gage of wire is 1.6mm, and welding current is 110A, and wire feed rate is 1450mm/
Min, speed of welding is 335mm/min, and arc length is maintained at 3mm, and gas flow is 18L/min.Keep wire feed in the fabrication process
Direction is constant, after every deposition layer of metal, and the highest about 1.4mm of welding gun, carry out the deposition of lower layer of metal afterwards, by that analogy,
Thus obtain required product.Postwelding, observes deposited 4043 aluminum alloy part surface, pore-free and slag inclusion, flawless
And arc scratch, between adjacent two layers metal, fusion is preferably, and naked eyes are difficult to differentiate, and surface total quality is high；Use X-ray diffraction
Method deposited 4043 aluminum alloy part is carried out material phase analysis, find that it is made up of Al and Al-Si eutectic two；Through polishing
Use keller's reagent to overlook 3s after polishing, find to have on interface to equidistantly distribute indistinct striped, the parallel distribution of striped,
Show that material layered distribution is inconspicuous, weld fused.
Example of the present invention is only to be described the preferred embodiment of the present invention, not to present inventive concept and
Scope is defined, on the premise of without departing from design philosophy of the present invention, and this area engineers and technicians technology to the present invention
Various deformation that scheme is made and improvement, all should fall into protection scope of the present invention.
Claims (6)
1. a coaxial hollow tungsten electrode TIG welding gun, including gun body (1), gun body (1) front end arranges porcelain mouth (6), it is characterised in that:
Also include hollow tungsten electrode (2)；Described gun body (1) is internal has protection air cavity (8), and gun body (1) is provided with and protects air cavity (8)
The air inlet (4) of connection, air inlet (4) is used for connecting source of the gas；Described hollow tungsten electrode (2) is arranged in gun body (1), its front end
Stretch out from porcelain mouth (6), the wire feed chamber (9) that centre is hollow of hollow tungsten electrode (2)；Set on the sidewall of described hollow tungsten electrode (2)
Being equipped with passage (5), the wire feed chamber (9) of hollow tungsten electrode (2) is connected by it with the protection air cavity (8) of gun body (1).
A kind of coaxial hollow tungsten electrode TIG welding gun the most according to claim 1, it is characterised in that: described hollow tungsten electrode (2)
Front end be provided with horn mouth (7).
3. a coaxial hollow tungsten electrode TIG welder, including welding gun, it is characterised in that: described welding gun use claim 1 or
Coaxial hollow tungsten electrode TIG welding gun in 2.
It is the most according to claim 3, it is characterised in that: also include wire feeder (10)；Described wire feeder (10) will
Welding wire (3) is sent into wire feed chamber (9) from the rear end of hollow tungsten electrode (2), and stretches out from the front end of hollow tungsten electrode (2).
5. the coaxial hollow tungsten electrode TIG welder described in claim 3, the electric arc at copper, aluminum and alloy thereof increases in material manufacture
Application.
6. a using method for coaxial hollow tungsten electrode TIG welder, the steps include: first to adjust the weldering of welding gun workpiece the most to be welded
The position of seam；Then, welding wire (3) is sent in the wire feed chamber (9) of hollow tungsten electrode (2)；Again by the air inlet of gun body (1)
(4) connecting source of the gas, protection gas enters protection air cavity (8), and sprays from porcelain mouth (6), forms protective atmosphere；Meanwhile, protection air cavity
(8) the protection gas in is entered the wire feed chamber (9) of hollow tungsten electrode (2), emptying inner air by passage (5), makes welding wire (3) be in
In protective atmosphere；Then, connect the source of welding current, the starting the arc between hollow tungsten electrode (2) and the soldered of workpiece, form molten bath, open
Beginning to weld, in welding process, welding wire (3) is preheated by hollow tungsten electrode (2) heat radiation, arc heat before entering molten bath；
At the end of welding, blow-out successively, stopping wire feed, disconnection protection gas, close the source of welding current, complete welding operation.
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| CN115815759A (en) * | 2023-02-06 | 2023-03-21 | 苏州友得利金属制品有限公司 | Hollow tungsten electrode coaxial wire feeding argon arc welding device and welding gun and welding method thereof |
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| CN106994546A (en) * | 2017-05-11 | 2017-08-01 | 江苏阿斯美特精工科技有限公司 | The common molten bath arc increasing material manufacturing TIG welding guns of multifibres and welder and increasing material manufacturing method |
| CN107160012A (en) * | 2017-05-11 | 2017-09-15 | 江苏阿斯美特精工科技有限公司 | A kind of TIG welding guns and welding method |
| CN106956059A (en) * | 2017-05-11 | 2017-07-18 | 江苏阿斯美特精工科技有限公司 | A kind of increasing material manufacturing mechanism and increasing material manufacturing device and increasing material manufacturing method |
| CN107186322B (en) * | 2017-06-29 | 2022-12-06 | 沈阳工业大学 | Half-split hollow tungsten electrode coaxial wire feeding inert gas shielded welding gun |
| CN107186322A (en) * | 2017-06-29 | 2017-09-22 | 沈阳工业大学 | Partly split the hollow tungsten electrode coaxial wire feed inert gas-shielded arc welding welding gun of formula |
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| CN108098122A (en) * | 2018-01-31 | 2018-06-01 | 大连威尔博合金科技有限公司 | A kind of welding wire welding rod gas shield device |
| CN109332858A (en) * | 2018-11-28 | 2019-02-15 | 江苏科技大学 | A kind of hollow tungsten electrode profundity melts the welding method of TIG filler wire welding slab |
| CN109365958A (en) * | 2018-11-28 | 2019-02-22 | 江苏科技大学 | A kind of hollow tungsten electrode TOPTIG welding method of gas-magnetic combined regulating |
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| CN109483022B (en) * | 2018-11-28 | 2021-04-23 | 江苏科技大学 | Gas-magnetic combined regulation and control double-tungsten-electrode TOPTIG welding method |
| CN109332858B (en) * | 2018-11-28 | 2022-04-01 | 江苏科技大学 | Welding method for hollow tungsten ultra-high deep-melting TIG filler wire welding thick plate |
| CN110340498A (en) * | 2019-07-16 | 2019-10-18 | 西南交通大学 | Hollow ring tungsten electrode GTA array silk filling increasing material manufacturing method and device |
| CN115815759A (en) * | 2023-02-06 | 2023-03-21 | 苏州友得利金属制品有限公司 | Hollow tungsten electrode coaxial wire feeding argon arc welding device and welding gun and welding method thereof |
| CN118081042A (en) * | 2024-04-24 | 2024-05-28 | 天津市聚鹏自行车配件有限公司 | Intelligent electric bicycle frame welding equipment and process thereof |
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