CN105436722B - A kind of air-flow guiding non-consumable gas shielded arc welding welding method - Google Patents
A kind of air-flow guiding non-consumable gas shielded arc welding welding method Download PDFInfo
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- CN105436722B CN105436722B CN201610018662.0A CN201610018662A CN105436722B CN 105436722 B CN105436722 B CN 105436722B CN 201610018662 A CN201610018662 A CN 201610018662A CN 105436722 B CN105436722 B CN 105436722B
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
Abstract
The present invention relates to a kind of air-flows to be oriented to non-consumable gas shielded arc welding welding method, belongs to welding method technical field；It establishes penetrating arc by welding control system, makes hollow tube cathode inner chamber based on air charging system, air extractor and arc center is in high pressure or negative pressure state below, increases the barometric gradient of penetrating arc radially, improves electric arc straightness；By the adjusting to arc center's high-voltage value/negative pressure value and its welding condition, the straightness of electric arc is oriented to air-flow, energy density is adjusted, good control of the realization to base material heat input；The welding method establishes penetrating arc on the basis of conventional plasma arc and TIG electric arcs, is aided with air-flow guidance quality, can dramatically increase welding penetration, improves cut deal welding quality, realizes high-efficiency high-quality welding.
Description
Technical field
The present invention relates to a kind of air-flows to be oriented to non-consumable gas shielded arc welding welding method, belongs to welding method technology neck
Domain.
Background technology
With the rapid development of science and technology, welding technique is deep into as a kind of irreplaceable important processing technology
The every field such as automobile, machine-building, military affairs, space flight and civilian daily life, and play increasingly important role.Although
As type of attachment increases between metal, there are the novel welding techniques such as Laser Welding, agitating friction weldering, electron beam weldering,
But arc welding is still considered as the relatively inexpensive connection type that can be achieved to be reliably connected between metal.How its welding life is improved
How yield improves its welding quality, how to realize that its welding production automates, has received more and more attention.
An important branch of the non-consumable gas shielded arc welding as arc welding is answered extensively because of its welding quality height
With the typical branch of argon tungsten-arc welding and PLASMA ARC WELDING as non-consumable gas shielded arc welding navigates in machine-building, aviation
The application in the fields such as it is increasingly extensive.There is good protecting effect, arc stability, weldment to deform small, appearance of weld for argon tungsten-arc welding
The advantages that beautiful, but deposition rate is small, productivity is relatively low, is only applicable to the welding compared with thin plate.Plasma arc is negative and positive the two poles of the earth
Between free electric arc due to mechanical compression, hot compression and the electromagnetic compression effect by nozzle the high temperature, high ionization degree, the height that are formed
The compression arc of energy density, PLASMA ARC WELDING have many advantages, such as that welding deformation is small, production efficiency is high, defect is few.
Modern industry gradually develops to enlargement, realizes that cut deal, the welding of big thick plate structure are of increasing concern.At present
The mode that big groove, multilayer multiple tracks MAG/MIG welderings or submerged-arc welding are mostly used for the welding of slab is welded, but this is not
Welding job amount is increased only, wlding consumption and welding cost are increased, reduces production efficiency, and heat input is big, heat
The zone of influence is wide, coarse grains, reduces joint mechanical property.Though plasma arc welding (PAW) can realize the welding of slab, due to thickness
The reason of spending can be the tendency aggravation of aperture unstability, also cannot achieve when plate thickness reaches a certain level and penetrate weldering.
Double-sided Arc Welding connects the abundant penetrating judgment that technique is Kentucky, United States university and invests one kind proposed in 1998
Different from conventional combined welding method, this method is using a source of welding current altogether to two sets of welding guns.This method, which has, increases fusion penetration, weldering
Afterwards workpiece deformation it is small, weld defect is few, welding point micro-property and mechanical property are good the advantages that, it can be achieved that intermediate gauge plate not
The direct butt welding of bevel.Therefore how to increase penetration power of the electric arc on plate thickness direction and realize stable welding, become realization
The bottleneck of thick plates high-speed and high-efficiency welding.
To solve the above-mentioned problems, the present invention proposes that a kind of air-flow is oriented to non-consumable gas shielded arc welding welding method,
Invention content
It is an object of the invention to overcome the above-mentioned deficiency of existing welding method, further increases electric arc in thick plates and wear
Saturating power realizes the high-speed and high-efficiency welding of slab, provides a kind of air-flow guiding non-consumable gas shielded arc welding welding method.The party
Method is easy to operate, can adapt to a variety of welding surroundings, in the case where not changing existing equipment substantially, becomes and has both plasma
The bifurcation electric arc of arc, TIG electric arcs and the two-sided electric arc advantage of single supply, significantly improves electric arc penetration power, to thermal weld stress and weldering
It is seamed into shape to be controlled, realizes the high-speed and high-efficiency welding of slab.
To achieve the goals above, the technical solution adopted by the present invention is that a kind of air-flow is oriented to non-consumable gas shielded arc welding
Welding method, including two kinds of forms, specific as follows.
A kind of air-flow guiding non-consumable gas shielded arc welding welding method, it is characterised in that：Plasma gun (2) and TIG
Welding gun A (5) is located at workpiece (4) both sides, and the axis vertical workpiece (4) of plasma gun (2) and TIG welding guns A (5) are simultaneously same
When be connected in the same source of welding current and its control system (1), penetrating arc (7) foundation after, by air extractor to TIG welding guns
Pumping process is carried out in the hollow pipe of hollow tube cathode A (6) in A, in the hollow pipe of hollow tube cathode A and hollow pipe
Outer tip forms stable negative pressure state, increases arc stiffness and energy density.
Equipment therefor, including：Plasma gun (2), TIG welding guns A (5), the source of welding current and its control system (1), control
Device (20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17)；Plasma gun (2) and
TIG welding guns A (5) is located at workpiece (4) both sides, the equal vertical workpiece of axis (4) of plasma gun (2) and TIG welding guns A (5)
And the two axis is on the same line, the electrode of plasma gun (2) and the hollow tube cathode A (6) of TIG welding guns A (5)
It is connected on the same source of welding current and its control system (1) via controller (20), controller (20) is also connect with workpiece (4)；It is empty
The rear end of central, tubular electrode A (6) by jointing A (8) and valve A (10) successively with pressure relief device A (15), pumping
Device (17) connects, and constitutes current path, pressure relief device A (12) is additionally provided on pressure relief device A (15).
Another air-flow is oriented to non-consumable gas shielded arc welding welding method, which is characterized in that TIG welding guns B (21) with
TIG welding guns A (5) is located at workpiece (4) both sides, the sky in hollow tube cathode A (6) and TIG welding guns B in TIG welding guns A
Central, tubular electrode B (22) is connected in the same source of welding current and its control system (1), after penetrating arc (7) foundation, is welded to TIG
Pumping process is carried out in the hollow pipe of hollow tube cathode A (6) in rifle A so that in the hollow pipe of hollow tube cathode A and
The outer tip of hollow pipe forms stable negative pressure state, increases arc stiffness and energy density；Simultaneously by air charging system to TIG welding guns
It is inflated processing in the hollow pipe of hollow tube cathode B (22) in B so that in the hollow pipe of hollow tube cathode B
Stable high voltage state is formed with tip outside hollow pipe；Or negative pressure or HIGH PRESSURE TREATMENT only are carried out to one of hollow tube cathode,
Increase arc stiffness and energy density by air-flow guiding role.
Equipment therefor, including：TIG welding guns B (21), TIG welding guns A (5), the source of welding current and its control system (1), controller
(20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17), jointing B (23), valve
B (25), air charging system (27), pressure relief device B (29)；TIG welding guns B (21) and TIG welding guns A (5) are located at workpiece (4)
Both sides, hollow tube cathode A (6) axis in hollow tube cathode B (22) and TIG welding guns A (5) in TIG welding guns B (21)
On the same line and vertical workpiece (4), and the hollow tube cathode B (22) in TIG welding guns B (21) and TIG welding guns A (5)
In hollow tube cathode A (6) be connected on the same source of welding current and its control system (1) by controller (20), controller
(20) it is also connect with workpiece (4)；The rear end of hollow tube cathode A (6) by jointing A (8) and valve A (10) successively with pressure
Power release device A (15), air extractor (17) connection, constitute current path, pressure are additionally provided on pressure relief device A (15)
Strong display device A (12).The rear end of hollow tube cathode B (22) by jointing B (23) and valve B (25) successively with pressure
Power release device B (29), air charging system (27) connection, constitute current path, pressure are additionally provided on pressure relief device B (29)
Display device B (32).
In welding process of the present invention, by adjusting the pressure status and technological parameter of arc center, welding electricity can be adjusted
The energy density and arc stiffness of arc to adjust thermal weld stress and control appearance of weld, and realize the weldering of big thickness workpiece
It connects.
In welding process of the present invention, the source of welding current can be that DC power supply is alternatively variable polarity power source.
Gas in the air charging system is inert gas.
It includes：TIG welding guns, built with hollow tube cathode；Plasma gun；
Air extractor is connected with the hollow tube cathode in welding gun, makes the inner cavity and its tip of hollow tube cathode
Arc center form stable negative pressure region；
Air charging system is connected with it with the hollow tube cathode in welding gun, make hollow tube cathode inner cavity and its
The arc center at tip forms stable high-pressure area.
The present invention includes pressure relief device, valve, pressure relief device and gas piping, wherein the pressure is released
Device is put to be connected to the air extractor/air charging system and the hollow tube cathode, the valve is located at connection
On the pipeline of the pressure relief device and the hollow tube cathode, the pressure relief device and the pressure relief device
It is connected, to show the pressure in it, the gas piping is being connected to current path.
Compared with prior art, as follows the advantages of the method for the present invention：
1) compared with traditional plasma welding method, advantage of the invention is exactly that can dramatically increase wearing for plasma-arc
Saturating ability realizes the one side welding with back formation of thick plates.
2) compared with traditional argon tungsten-arc welding welding method, the present invention not only makes electric arc have good stability, Er Qiezeng
The penetration capacity for having added conventional arc, increases welding penetration, helps to realize the one side welding with back formation of thick plates.
3) this method can be adjusted the electric arc penetration capacity of two-sided electric arc, be made by the adjusting of pressure value at arc center
With existing Plasma Welding power supply and argon tungsten-arc welding power supply, the efficient high-speed welding of slab is realized.
Description of the drawings
Fig. 1 is the operating diagram that air-flow is oriented to PAW-GTAW welderings before valve starts.
Fig. 2 is the operating diagram that air-flow is oriented to PAW-GTAW welderings after valve starts.
Fig. 3 is the operating diagram that air-flow is oriented to GTAW-GTAW welderings before valve starts.
Fig. 4 is the operating diagram that air-flow is oriented to GTAW-GTAW welderings after valve starts.
In figure：1, the source of welding current and its control system, 2, plasma gun, 3, tungsten electrode, 4, workpiece, 5, TIG welding guns A, 6,
Hollow tube cathode A, 7, penetrating arc, 8, jointing A, 9, gas-guide pipeline A, 10, valve A, 11, gas-guide pipeline B, 12, pressure
Strong display device A, 13, gas-guide pipeline C, 14, gas-guide pipeline D, 15, pressure relief device A, 16, gas-guide pipeline E, 17, pumping
Device, 18, welding cable A, 19, welding cable B, 20, controller, 21, TIG welding guns B, 22, hollow tube cathode B, 23, connection
Connector B, 24, gas-guide pipeline E, 25, valve B, 26, gas-guide pipeline F, 27, air charging system, 28, gas-guide pipeline G, 29, pressure release
Device B, 30, gas-guide pipeline H, 31, gas-guide pipeline I, 32, pressure relief device B.
Specific implementation mode
Below with reference to attached drawing specific description embodiments of the present invention.But the present invention is not limited to following embodiments.
Air-flow is oriented to the operating diagram of PAW-GTAW weldings by both sides before starting as shown in Figure 1 for valve, is illustrated in figure 2 valve
Air-flow is oriented to the operating diagram of PAW-GTAW weldings by both sides after door starts, and is illustrated in figure 3 air-flow before valve starts and is oriented to GTAW-
The operating diagram of GTAW weldings by both sides is illustrated in figure 4 the work signal that air-flow after valve starts is oriented to GTAW-GTAW weldings by both sides
Figure.
The specific implementation mode of this welding method is described in detail in conjunction with Fig. 1 and Fig. 2, Fig. 3 and Fig. 4：
Fig. 1 and Fig. 2 is one of the embodiment of the welding method.It is protected as shown, the air-flow is oriented to non-melt pole gas
Shield weldering welder include mainly the source of welding current and its control system 1, plasma gun 2, tungsten electrode 3, workpiece 4, TIG welding guns A5,
Hollow tube cathode A6, penetrating arc 7, jointing A8, valve A10, pressure relief device A12, pressure relief device A15,
Air extractor 17, welding cable A18, welding cable B19, controller 20；Plasma gun 2 and TIG welding guns A5 be respectively placed in by
4 both sides of welder's part, and two welding gun axis keep three on the same line, according to the thickness of workpiece perpendicular to welded piece 4
Adjust welding parameter and electric arc negative pressure value；Wherein --- the gas-guide pipeline E16 --- pressure relief device A15 --- of air extractor 17
Gas-guide pipeline D14 --- gas-guide pipeline B11 --- valve A10 --- gas-guide pipeline A9 --- jointing A8 --- hollow tubulars
Electrode A 6 constitutes gas piping；Pressure relief device A12 is connected with pressure relief device A15；The wherein source of welding current and its control
System 1 processed --- welding cable A18 --- --- TIG welding guns A5 --- plasma gun 2 --- welding cables of controller 20
B19 --- the source of welding current and its control system 1 constitute electric loop；With the welding method in relation to needed for welding gun water route and gas circuit
Connection type is using conventional solution.So no longer specifically illustrating.
This welding method includes the following steps：
Step 1. is correctly connected in the gas circuit water route of welding gun according to a conventional method；Welded piece is ready, according to plate
Thick bevel or square groove；By plasma gun, TIG welding guns A, workpiece and wire feeder be all connected to the source of welding current and
In the circuit that control system is constituted, wherein the axis vertical workpiece 4 of two welding guns, it is ensured that controller can carry out mutual lock control；Really
Protect the gas-guide tube of air extractor 17, pressure relief device A15, valve A10, jointing A8, hollow tube cathode A6 and auxiliary
The gas circuit that road is established correctly is connected to, it is ensured that valve A10 is closed down；Start air extractor 17, to pressure relief device
A15 carries out pumped down process, and is at any time observed the numerical value of pressure relief device A12 to monitor pressure relief device
Pressure in A15, until preset negative pressure value.
Step 2. connects the circuit of the source of welding current, plasma gun, TIG welding guns, by the hollow tube cathode of TIG welding guns
A6 contact workpieces establish plasma-arc that is normal, stablizing and establish stable TIG electric arcs by way of contacting the starting the arc.
Step 3. establishes the subnormal ambient of hollow tube cathode after electric arc penetrates workpiece and establishes stable penetrating arc,
Start valve A10, the gas circuit of foundation is made to be connected, hollow tube cathode is in negative pressure state, after several milliseconds, in the compression of atmospheric pressure
Under effect, penetrating arc deflection between plasma gun 2 and TIG welding guns A5 increases, constraint (restraint) degree increases, and penetrating arc 7 is from Fig. 1
In form become the form in Fig. 2.
In welding process, by changing welding condition such as electric current, throughput, camber etc. and pressure relief device A15
Pressure values, the penetration power of penetrating arc 7 is adjusted, realizes the welding of slab.
The two of the embodiment of the welding method, the source of welding current are using AC power, concrete operation step：
Step 1 and step 2 are same as described above.Following operation is only added behind step 3：When establishing negative pressure ring
After penetrating arc behind border is stablized, when plasma gun 2 connects timing, the switch of controller 20 is connected to 1. direction, makes the source of welding current
And control system 1, plasma gun 2, workpiece 4 constitute circuit and carry out cleaning action of the cathode to workpiece 4, while TIG electric arcs are put out
It goes out；When plasma gun 2 connects negative, the switch of controller 20 is connected to 2. direction, makes the source of welding current and control system 1, plasma
Welding gun 2, TIG welding guns A5 constitute circuit and are welded to workpiece 4.
Fig. 3 and Fig. 4 is the three of the embodiment of the welding method.It is protected as shown, the air-flow is oriented to non-melt pole gas
Shield weldering welder includes mainly the source of welding current and its control system 1, workpiece 4, TIG welding guns A5, hollow tube cathode A6, penetrates
Electric arc 7, jointing A8, valve A10, pressure relief device A12, pressure relief device A15, air extractor 17, welding cable
A18, welding cable B19, controller 20, TIG welding guns B21, hollow tube cathode B22, jointing B23, valve B25, inflation
Device 27, pressure relief device B29, pressure relief device B32；TIG welding gun B21 and TIG welding guns A5 is respectively placed in welded piece 4
Both sides, and two welding gun axis keep three on the same line perpendicular to welded piece 4, are adjusted and are welded according to the thickness of workpiece
It connects parameter and electric arc bears/high-voltage value；Wherein --- gas-guide pipeline E16 --- pressure relief device A15 --- is led air extractor 17
Air pipe D14 --- gas-guide pipeline B11 --- valve A10 --- gas-guide pipeline A9 --- jointing A8 --- hollow tubular electricity
Pole A6 constitutes gas piping, --- gas-guide pipeline G28 --- pressure relief device B29 --- gas-guide pipeline of air charging system 27
H30 --- gas-guide pipeline F26 --- valve B25 --- gas-guide pipeline E24 --- jointing B23 --- hollow tube cathodes
B22 constitutes gas piping；Pressure relief device A12 is filled with pressure relief device A15, pressure relief device B29 and pressure display
B32 is set to be connected；The wherein source of welding current and its control system 1 --- welding cable A18 --- controller 20 --- TIG welding guns
--- TIG welding guns B21 --- welding cable B19 --- sources of welding current and its control system 1 constitute electric loop to A5；With the welding
Solution of the method in relation to water route and gas circuit connection type use routine needed for welding gun.So no longer specifically illustrating.
This welding method includes the following steps：
Step 1. is correctly connected in the gas circuit water route of welding gun according to a conventional method；Welded piece is ready, according to plate
Thick bevel or square groove；TIG welding gun A, TIG welding guns B, workpiece and wire feeder are all connected to and the source of welding current and control
In the circuit that system processed is constituted, wherein the axis vertical workpiece 4 of two welding guns, it is ensured that controller can carry out mutual lock control；Ensure
The gas-guide pipeline of air extractor 17, pressure relief device A15, valve A10, jointing A8, hollow tube cathode A6 and auxiliary
The gas circuit of foundation is correctly connected to, it is ensured that valve A10 is closed down；Start air extractor 17, to pressure relief device A15
Pumped down process is carried out, and the numerical value of pressure relief device A12 is observed at any time to monitor pressure relief device A15
Interior pressure, until preset negative pressure value；Ensure by air charging system 27, pressure relief device B29, valve B25, jointing
The gas circuit that the gas-guide pipeline of B23, hollow tube cathode B22 and auxiliary are established correctly is connected to, it is ensured that valve B25 is closed
Under；Start air charging system 27, boosting processing is inflated to pressure relief device B29, and at any time to pressure relief device B32's
Numerical value is observed to monitor the pressure in pressure relief device B29, until preset pressure values.
Step 2. connects the circuit of the source of welding current, TIG welding gun A, TIG welding guns B, by the hollow tubular electricity of TIG welding guns A5
Pole A6 contact workpieces establish normal, the stable TIG electric arcs between TIG welding guns B21 and workpiece 4 by way of the high frequency starting the arc
And the TIG electric arcs stablized between TIG welding guns A5 and workpiece 4 are established by way of contacting the starting the arc.
Step 3. establishes the negative pressure of hollow tube cathode A6 after electric arc penetrates workpiece 4 and establishes stable penetrating arc 7
Environment starts valve A10, so that the gas circuit of foundation is connected, hollow tube cathode A6 is in negative pressure state, while establishing hollow tubular
The hyperbaric environment of electrode B 22 starts valve B25, and the gas circuit of foundation is made to be connected the gas injection into electric arc, after several milliseconds, in TIG
New penetrating arc 7 is established between welding gun A5 and TIG welding gun B21, as shown in figure 4, penetrating arc deflection increases, constraint (restraint) degree adds
Greatly.
In welding process, by changing welding condition such as electric current, throughput, camber etc. and two hollow tube cathodes
Pressure values, the penetration power of penetrating arc 7 is adjusted, realizes the welding of slab.
The four of the embodiment of the welding method, if using AC power, concrete operation step is：
Step 1 and step 2 are same as described above.Following operation is only added behind step 3：It is worn when establishing stabilization
After saturating electric arc, when TIG welding guns B21 connects timing, the switch connection of controller 20 1. direction, make the source of welding current and control system 1,
TIG welding guns B21, workpiece 4 constitute circuit and carry out cleaning action of the cathode, while the TIG arc extinctions of the sides TIG welding gun A5 to workpiece 4；
When TIG welding guns B21 connects negative, the switch of controller 20 is connected to 2. direction, makes the source of welding current and control system 1, TIG welding guns
B21, TIG welding gun A5 constitute circuit and are welded to workpiece 4.
It, also can be to one of hollow tube cathode in the embodiment three and embodiment four of the above-mentioned welding method
Negative pressure or HIGH PRESSURE TREATMENT are carried out, increases arc stiffness by air-flow guiding role.
Embodiment 1：
A kind of air-flow of the present embodiment is oriented to non-consumable gas shielded arc welding welding method, in a manner of PAW-GTAW, selects
For DC power supply, concrete operations are as follows：
Before step 1. welding, after the position to be welded polishing of workpiece 8mm thickness aluminium alloy plates to be welded, cleaning, it is fixed in
On welding tool setup；Shown in Fig. 1, the connection of gas circuit, water route, circuit is carried out, plasma gun and TIG welding guns distinguish position
In workpiece both sides, the axis of two welding guns perpendicular to workpiece and is connected on the same source of welding current simultaneously；So that by air extractor, pressure
Release device, valve, jointing, the gas circuit that the gas-guide pipeline of hollow tube cathode and auxiliary is established correctly are connected to；At valve
Under closed state, start air extractor, pumped down process is carried out to pressure relief device, by pressure relief device
Numerical value observation makes the pressure in pressure relief device reach preset negative pressure value 0.03Mpa~0.08Mpa.
It is fixed that step 2. carries out technological parameter：100~180A of welding current, speed of welding 0.1m/min, plasma gun side
Camber 4mm, TIG welding gun side camber 3mm, protection air-flow amount 15L/min, ion-gas flow 3L/min.2. controller is switched to
Access, the hollow tube cathode contact workpiece of TIG welding guns, initially sets up normal plasma-arc, secondly by the contact starting the arc
Mode, the hollow tube cathode of TIG welding guns is gradually lifted, stable TIG electric arcs are established.
Step 3. establishes the subnormal ambient of hollow tube cathode after electric arc penetrates workpiece and establishes stable penetrating arc,
Starting valve, the gas circuit of foundation is made be connected, hollow tube cathode is in negative pressure state, after several milliseconds, new penetrating arc stabilization,
It is welded, until completing the welding of workpiece.
The welded piece that this example obtains is compared with the workpiece obtained without Negative pressure under identical parameters, and molding is more
It is excellent.
Claims (1)
1. a kind of air-flow is oriented to non-consumable gas shielded arc welding welding method, which is characterized in that TIG welding guns B（21）With TIG welding guns
A（5）It is located at workpiece（4）Both sides, the hollow tube cathode A in TIG welding guns A（6）With the hollow tubular electricity in TIG welding guns B
Pole B（22）It is connected in the same source of welding current and its control system（1）On, in penetrating arc（7）After foundation, to the sky in TIG welding guns A
Central, tubular electrode A（6）Hollow pipe in carry out pumping process so that in the hollow pipe of hollow tube cathode A and hollow pipe outside
Tip forms stable negative pressure state, increases arc stiffness and energy density；Simultaneously by air charging system to the sky in TIG welding guns B
Central, tubular electrode B（22）Hollow pipe in be inflated processing so that in the hollow pipe of hollow tube cathode B and hollow pipe outside
Tip forms stable high voltage state；Or negative pressure or HIGH PRESSURE TREATMENT only are carried out to one of hollow tube cathode, it is led by air-flow
Increase arc stiffness and energy density to effect；
Equipment therefor, including：TIG welding guns B（21）, TIG welding guns A（5）, the source of welding current and its control system（1）, controller
（20）, jointing A（8）, valve A（10）, pressure relief device A（15）, air extractor（17）, jointing B（23）, valve
B（25）, air charging system（27）, pressure relief device B（29）；TIG welding guns B（21）In hollow tube cathode B（22）And TIG
Welding gun A（5）In hollow tube cathode A（6）Axis is on the same line and equal vertical workpiece（4）, and TIG welding guns B（21）In
Hollow tube cathode B（22）With TIG welding guns A（5）In hollow tube cathode A（6）Pass through controller（20）It is connected in same weldering
Connect power supply and its control system（1）On, controller（20）Also with workpiece（4）Connection；Hollow tube cathode A（6）Rear end pass through
Jointing A（8）And valve A（10）Successively with pressure relief device A（15）, air extractor（17）Connection constitutes current path,
In pressure relief device A（15）On be additionally provided with pressure relief device A（12）；Hollow tube cathode B（21）Rear end pass through connection
Connector B（23）And valve B（25）Successively with pressure relief device B（29）, air charging system（27）Connection constitutes current path,
Pressure relief device B（29）On be additionally provided with pressure relief device B（32）；The source of welding current is DC power supply or is Variable Polarity
Power supply；Gas in air charging system is inert gas；By adjusting the pressure status and technological parameter of arc center, and then adjust
The energy density and arc stiffness for saving welding arc to adjust thermal weld stress and control appearance of weld, and realize big thickness
The welding of workpiece.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990446A (en) * | 1998-03-27 | 1999-11-23 | University Of Kentucky Research Founadtion | Method of arc welding using dual serial opposed torches |
| CN103600177A (en) * | 2013-11-25 | 2014-02-26 | 北京工业大学 | Single-power-source VPPA-GTAW binary electric-arc punching welding method |
| CN104227242A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Device and method for co-axial and composite welding by adopting center negative pressure plasma arc and laser |
| CN104308343A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central negative-pressure arc welding device and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559510A (en) * | 2004-03-12 | 2005-01-05 | 邢乐道 | Compound medicine for treating Aids, cancer and its preparation method |
-
2016
- 2016-01-12 CN CN201610018662.0A patent/CN105436722B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990446A (en) * | 1998-03-27 | 1999-11-23 | University Of Kentucky Research Founadtion | Method of arc welding using dual serial opposed torches |
| CN103600177A (en) * | 2013-11-25 | 2014-02-26 | 北京工业大学 | Single-power-source VPPA-GTAW binary electric-arc punching welding method |
| CN104227242A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Device and method for co-axial and composite welding by adopting center negative pressure plasma arc and laser |
| CN104308343A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central negative-pressure arc welding device and method |
Non-Patent Citations (1)
| Title |
|---|
| 双面电弧焊接工艺及物理过程分析;崔旭明等;《北京航空航天大学学报》;20030731;第29卷(第7期);第655页右栏倒数第2段至第657页左栏最后1段及图3 * |
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