CN105436722A - Air guiding non-consumable gas shielded arc welding method - Google Patents
Air guiding non-consumable gas shielded arc welding method Download PDFInfo
- Publication number
- CN105436722A CN105436722A CN201610018662.0A CN201610018662A CN105436722A CN 105436722 A CN105436722 A CN 105436722A CN 201610018662 A CN201610018662 A CN 201610018662A CN 105436722 A CN105436722 A CN 105436722A
- Authority
- CN
- China
- Prior art keywords
- welding
- arc
- hollow tube
- gun
- tube cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to an air guiding non-consumable gas shielded arc welding method, and belongs to the technical field of welding methods. The welding method comprises the following steps: a penetrating arc is established through a welding control system, the inner cavity of a hollow pipe-shaped electrode and the center of an electric arc below the hollow pipe-shaped electrode are enabled to be in the high-pressure or negative-pressure state through an air filling device and an air extracting device, the pressure gradient of the penetrating arc in the radial direction is increased, and the straightness of the electric arc is improved; and through the adjustment of the high-pressure value or the negative-pressure value of the center of the electric arc and the welding process parameters of the electric arc, the straightness and the energy density of the air guiding electric arc are adjusted so as to realize good control of heat input of parent metal. The welding method has the advantages that the penetrating arc is established on the basis of a traditional plasma arc and a TIG arc and with the assistance of the air guiding characteristic, the welding penetration can be increased remarkably, the welding quality of a medium plate is improved, and the high-efficiency and high-quality welding is realized.
Description
Technical field
The present invention relates to a kind of air-flow guiding non-consumable gas shielded arc welding welding method, belong to welding method technical field.
Background technology
Along with the develop rapidly of science and technology, solder technology, as the irreplaceable important processing technology of one, is deep into the every field such as automobile, machine-building, military affairs, space flight and civilian daily life, and plays more and more important effect.Although along with increasing of type of attachment between metal, occur that the solder technology that Laser Welding, friction stir welding, electron beam welding etc. are novel, arc welding are still considered to realize the connected mode of the comparatively economy that intermetallic reliably connects.How to improve its welding productivity, how to improve its welding quality, how to realize its welding production automation, received increasing concern.
Non-consumable gas shielded arc welding is as an important branch of arc welding; be used widely because its welding quality is high; argon tungsten-arc welding and PLASMA ARC WELDING are as the typical branch of non-consumable gas shielded arc welding, increasingly extensive in the application in the field such as machine-building, Aero-Space.Argon tungsten-arc welding has the advantages such as protected effect is good, the distortion of arc stability, weldment is little, appearance of weld is attractive in appearance, but deposition rate is little, and productivity ratio is lower, is only applicable to the welding compared with thin plate.Plasma arc be the free electric arc of negative and positive two interpolar because being subject to the mechanical compress of nozzle, hot compression and electromagnetic compression effect and the compression arc of the high temperature formed, high ionization degree, high-energy-density, PLASMA ARC WELDING has the advantages such as welding deformation is little, production efficiency is high, defect is few.
Modern industry keeps the large-scale development gradually, realizes cut deal, the greatly welding of thick plate structure and day by day receives publicity.Welding at present for slab adopts the mode of large groove, multilayer multiple tracks MAG/MIG weldering or submerged-arc welding to weld more, but this not only adds welding job amount, add wlding consumption and welding cost, reduce production efficiency, and heat input is large, heat affected area is wide, coarse grains, reduces joint mechanical property.Though plasma arc welding (PAW) can realize the welding of slab, but due to the reason of thickness can be the tendency aggravation of aperture unstability, also cannot realize when thickness of slab acquires a certain degree penetrating weldering.
It is that an abundant penetrating judgment of Kentucky, United States university is invested propose for 1998 a kind of and is different from conventional combined welding method that Double-sided Arc Welding connects technique, and this method adopts a source of welding current to overlap welding guns to two altogether.This method has increases fusion penetration, postwelding workpiece deformation is little, weld defect is few, welding point micro-property and the advantage such as mechanical property is good, can realize the direct butt welding of intermediate gauge plate square groove.Therefore how to increase the penetration power of electric arc on thickness of slab direction and realize stable welding, becoming the bottleneck realizing the welding of thick plates high-speed and high-efficiency.
In order to solve the problem, the present invention proposes a kind of air-flow guiding non-consumable gas shielded arc welding welding method,
Summary of the invention
The object of the invention is to the above-mentioned deficiency overcoming existing welding method, improve electric arc penetration power in thick plates further, realize the high-speed and high-efficiency welding of slab, provide a kind of air-flow guiding non-consumable gas shielded arc welding welding method.The method is simple to operate, multiple welding surroundings can be adapted to, when substantially not changing existing equipment, become the bifurcation electric arc having the two-sided electric arc advantage of plasma arc, TIG electric arc and single supply concurrently, significantly improve electric arc penetration power, thermal weld stress and appearance of weld are controlled, realizes the high-speed and high-efficiency welding of slab.
To achieve these goals, the technical solution used in the present invention is a kind of air-flow guiding non-consumable gas shielded arc welding welding method, comprises two kinds of forms, specific as follows.
A kind of air-flow guiding non-consumable gas shielded arc welding welding method, it is characterized in that: plasma gun (2) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, the axes normal workpiece (4) of plasma gun (2) and TIG welding gun A (5) is also connected in the same source of welding current and control system (1) thereof simultaneously, after penetrating arc (7) is set up, by air extractor to process of bleeding in the hollow pipe of the hollow tube cathode A (6) in TIG welding gun A, most advanced and sophisticated formation stable negative pressure condition in the hollow pipe of hollow tube cathode A and outside hollow pipe, increase arc stiffness and energy density.
Equipment therefor, comprising: plasma gun (2), TIG welding gun A (5), the source of welding current and control system (1) thereof, controller (20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17); Plasma gun (2) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, the equal vertical workpiece of axis (4) of plasma gun (2) and TIG welding gun A (5) and both axis are on the same line, the electrode of plasma gun (2) and the hollow tube cathode A (6) of TIG welding gun A (5) are connected in the same source of welding current and control system (1) thereof via controller (20), and controller (20) is also connected with workpiece (4); The rear end of hollow tube cathode A (6) is connected with pressure relief device A (15), air extractor (17) successively by jointing A (8) and valve A (10), form current path, pressure relief device A (15) is also provided with pressure display unit A (12).
Another kind of air-flow guiding non-consumable gas shielded arc welding welding method, it is characterized in that, TIG welding gun B (21) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, hollow tube cathode A (6) in TIG welding gun A and the hollow tube cathode B (22) in TIG welding gun B is connected in the same source of welding current and control system (1) thereof, after penetrating arc (7) is set up, to bleed in hollow pipe to the hollow tube cathode A (6) in TIG welding gun A process, make in the hollow pipe of hollow tube cathode A and the outer most advanced and sophisticated formation stable negative pressure condition of hollow pipe, increase arc stiffness and energy density, being processed carrying out inflation in the hollow pipe of the hollow tube cathode B (22) in TIG welding gun B by aerating device simultaneously, making in the hollow pipe of hollow tube cathode B and the outer most advanced and sophisticated formation stable high voltage state of hollow pipe, or only negative pressure or HIGH PRESSURE TREATMENT are carried out to one of them hollow tube cathode, increase arc stiffness and energy density by air-flow guide effect.
Equipment therefor, comprising: TIG welding gun B (21), TIG welding gun A (5), the source of welding current and control system (1) thereof, controller (20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17), jointing B (23), valve B (25), aerating device (27), pressure relief device B (29), TIG welding gun B (21) and TIG welding gun A (5) lays respectively at workpiece (4) both sides, hollow tube cathode B (22) in TIG welding gun B (21) and hollow tube cathode A (6) axis in TIG welding gun A (5) on the same line and all vertical workpiece (4), and the hollow tube cathode B (22) in TIG welding gun B (21) and the hollow tube cathode A (6) in TIG welding gun A (5) is connected in the same source of welding current and control system (1) thereof by control device (20), control device (20) is also connected with workpiece (4), the rear end of hollow tube cathode A (6) is connected with pressure relief device A (15), air extractor (17) successively by jointing A (8) and valve A (10), form current path, pressure relief device A (15) is also provided with pressure display unit A (12).The rear end of hollow tube cathode B (21) is connected with pressure relief device B (29), aerating device (27) successively by jointing B (23) and valve B (25), form current path, pressure relief device B (29) is also provided with pressure display unit B (32).
In welding process of the present invention, by regulating pressure status and the technological parameter of arc center, energy density and the arc stiffness of welding arc can be regulated, thus regulate thermal weld stress and control appearance of weld, and realize the welding of heavy thickness workpiece.
In welding process of the present invention, the described source of welding current can be dc source and also can be variable polarity power source.
Gas in described aerating device is inert gas.
It comprises: TIG welding gun, and it is built with hollow tube cathode; Plasma gun;
Air extractor, it is connected with the hollow tube cathode in welding gun, makes the inner chamber of hollow tube cathode and the arc center at tip thereof form stable negative pressure region;
Aerating device, it is connected with the hollow tube cathode in welding gun with it, makes the inner chamber of hollow tube cathode and the arc center at tip thereof form stable high-pressure area.
The present invention comprises pressure relief device, valve, pressure display unit and gas piping, wherein said pressure relief device is in order to be communicated with described air extractor/described aerating device and described hollow tube cathode, described valve is positioned on the pipeline of the described pressure relief device of connection and described hollow tube cathode, described pressure display unit is connected with described pressure relief device, to show the pressure in it, described gas piping is in order to be communicated with current path.
Compared with prior art, the advantage of the inventive method is as follows:
1) compared with traditional plasma welding method, advantage of the present invention is exactly the penetration capacity that significantly can increase plasma-arc, realizes the one side welding with back formation of thick plates.
2) compared with conventional tungsten electrode argon arc welding welding method, the present invention not only makes electric arc have good stability, and adds the penetration capacity of conventional arc, adds welding penetration, contributes to the one side welding with back formation realizing thick plates.
3) this method is by the adjustment of arc center's place's force value, can regulate the electric arc penetration capacity of two-sided electric arc, use existing Plasma Welding power supply and argon tungsten-arc welding power supply, realizes the efficient high-speed welding of slab.
Accompanying drawing explanation
Fig. 1 is the operating diagram of air-flow guiding PAW-GTAW weldering before valve starts.
Fig. 2 is the operating diagram of air-flow guiding PAW-GTAW weldering after valve starts.
Fig. 3 is the operating diagram of air-flow guiding GTAW-GTAW weldering before valve starts.
Fig. 4 is the operating diagram of air-flow guiding GTAW-GTAW weldering after valve starts.
In figure: 1, the source of welding current and control system thereof, 2, plasma gun, 3, tungsten electrode, 4, workpiece, 5, TIG welding gun 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 display unit A, 13, gas-guide pipeline C, 14, gas-guide pipeline D, 15, pressure relief device A, 16, gas-guide pipeline E, 17, air extractor, 18, welding cable A, 19, welding cable B, 20, controller, 21, TIG welding gun B, 22, hollow tube cathode B, 23, jointing B, 24, gas-guide pipeline E, 25, valve B, 26, gas-guide pipeline F, 27, aerating device, 28, gas-guide pipeline G, 29, pressure relief device B, 30, gas-guide pipeline H, 31, gas-guide pipeline I, 32, pressure display unit B.
Detailed description of the invention
Below with reference to accompanying drawing specific description embodiments of the present invention.But the present invention is not limited to following examples.
Be illustrated in figure 1 the operating diagram that valve starts front air-flow guiding PAW-GTAW welding by both sides, be illustrated in figure 2 the operating diagram that valve starts rear air-flow guiding PAW-GTAW welding by both sides, be illustrated in figure 3 the operating diagram that valve starts front air-flow guiding GTAW-GTAW welding by both sides, be illustrated in figure 4 the operating diagram that valve starts rear air-flow guiding GTAW-GTAW welding by both sides.
Composition graphs 1 and Fig. 2, Fig. 3 and Fig. 4 detailed description of the invention to this welding method are described in detail:
Fig. 1 and Fig. 2 is one of embodiment of this welding method.As shown in the figure, this air-flow guiding non-consumable gas shielded arc welding welder mainly comprises the source of welding current and control system 1 thereof, plasma gun 2, tungsten electrode 3, workpiece 4, TIG welding gun A5, hollow tube cathode A6, welding arc 7, jointing A8, valve A10, pressure display unit A12, pressure relief device A15, air extractor 17, welding cable A18, welding cable B19, controller 20; Plasma gun 2 and TIG welding gun A5 are placed in welded piece 4 both sides respectively, and two welding gun axes normal are in welded piece 4, keep three on the same line, and the thickness according to workpiece regulates welding parameter and electric arc negative pressure value;------------------gas-guide pipeline A9---jointing A8---hollow tube cathode A6 forms gas piping to valve A10 to gas-guide pipeline B11 to gas-guide pipeline D14 to pressure relief device A15 to gas-guide pipeline E16 to wherein air extractor 15; Pressure display unit A12 is connected with pressure relief device A15;------------plasma gun 2---welding cable B19---source of welding current and control system 1 thereof form electric loop to TIG welding gun A5 to controller 20 to welding cable A18 to the wherein source of welding current and control system 1 thereof; With this welding method about the water route needed for welding gun and gas circuit connected mode adopt conventional solution.So be no longer specifically described.
This welding method comprises the following steps:
Exact connect ion is carried out in the gas circuit water route of welding gun by step 1. according to a conventional method; Welded piece is ready, according to thickness of slab bevel or square groove; Plasma gun, TIG welding gun A, workpiece and wire feeder are all connected in the loop formed with the source of welding current and control system, the wherein axes normal workpiece 4 of two welding guns, guarantee that controller can carry out interlocking and control; Guarantee that the gas circuit that air extractor 17, pressure relief device A15, valve A10, jointing A8, hollow tube cathode A6 and auxiliary gas-guide pipeline are set up correctly is communicated with, under guaranteeing that valve A10 is in closed condition; Start air extractor 17, pumped down process is carried out to pressure relief device A15, and at any time the numerical value of pressure display unit 12 is observed with the pressure in monitoring pressure releasing device A15, until the negative pressure value preset.
The loop of the source of welding current, plasma gun, TIG welding gun is connected by step 2., and the hollow tube cathode A6 of TIG welding gun is contacted workpiece, sets up normal, stable plasma-arc and sets up stable TIG electric arc by the mode contacting the starting the arc.
Step 3. is after electric arc penetrates workpiece and penetrating arc is stablized in foundation, set up the subnormal ambient of hollow tube cathode, start valve A10, make the gas circuit conducting of foundation, hollow tube cathode is in negative pressure state, after several milliseconds, under atmospheric compression, penetrating arc deflection between plasma gun 2 and TIG welding gun A5 strengthens, constraint (restraint) degree strengthens, and penetrating arc 7 becomes the form in Fig. 2 from the form Fig. 1.
In welding process, by changing welding condition as electric current, throughput, camber etc., and the pressure values of pressure relief device A15, the penetration power of penetrating arc 7 is adjusted, realizes the welding of slab.
The embodiment two of this welding method, the source of welding current adopts AC power, and its concrete operation step is:
Step 1 and step 2 are all same as described above.Just after step 3, add following operation: after the penetrating arc after setting up subnormal ambient is stable, when plasma gun 2 connects timing, the switch of controller 20 is communicated with 1. direction, the source of welding current and control system 1, plasma gun 2, workpiece 4 is made to form loop and carry out cleaning action of the cathode to workpiece 4, simultaneously TIG arc extinction; When plasma gun 2 connects negative, the switch of controller 20 is communicated with 2. direction, makes the source of welding current and control system 1, plasma gun 2, TIG welding gun A5 form loop and weld workpiece 4.
Fig. 3 and Fig. 4 is the embodiment three of this welding method.As shown in the figure, this air-flow guiding non-consumable gas shielded arc welding welder mainly comprises the source of welding current and control system 1 thereof, workpiece 4, TIG welding gun A5, hollow tube cathode A6, penetrating arc 7, jointing A8, valve A10, pressure display unit A12, pressure relief device A15, air extractor 17, welding cable A18, welding cable B19, controller 20, TIG welding gun B21, hollow tube cathode B22, jointing B23, valve B25, aerating device 27, pressure relief device B29, pressure display unit B32; TIG welding gun B21 and TIG welding gun A5 is placed in welded piece 4 both sides respectively, and two welding gun axes normal are in welded piece 4, keeps three on the same line, regulates welding parameter and electric arc to bear/high-voltage value according to the thickness of workpiece;------------------hollow tube cathode 6 forms gas piping to gas-guide pipeline A9---jointing A8---, aerating device 27, and------------------gas-guide pipeline E24---jointing B23---hollow tube cathode B22 forms gas piping to valve B25 to gas-guide pipeline F26 to gas-guide pipeline H30 to pressure relief device B29 to gas-guide pipeline G28 to valve A10 to gas-guide pipeline B11 to gas-guide pipeline D14 to pressure relief device A15 to gas-guide pipeline E16 to wherein air extractor 15; Pressure display unit A12 is connected with pressure display unit B32 with pressure relief device A15, pressure relief device B29;------------TIG welding gun B21---welding cable B19---source of welding current and control system 1 thereof form electric loop to TIG welding gun A5 to controller 20 to welding cable A18 to the wherein source of welding current and control system 1 thereof; With this welding method about the water route needed for welding gun and gas circuit connected mode adopt conventional solution.So be no longer specifically described.
This welding method comprises the following steps:
Exact connect ion is carried out in the gas circuit water route of welding gun by step 1. according to a conventional method; Welded piece is ready, according to thickness of slab bevel or square groove; TIG welding gun A, TIG welding gun B, workpiece and wire feeder are all connected in the loop formed with the source of welding current and control system, the wherein axes normal workpiece 4 of two welding guns, guarantee that controller can carry out interlocking and control; Guarantee that the gas circuit that air extractor 17, pressure relief device A15, valve A10, jointing A8, hollow tube cathode A6 and auxiliary gas-guide pipeline are set up correctly is communicated with, under guaranteeing that valve A10 is in closed condition; Start air extractor 17, pumped down process is carried out to pressure relief device A15, and at any time the numerical value of pressure display unit A12 is observed with the pressure in monitoring pressure releasing device A15, until the negative pressure value preset; Guarantee that the gas circuit set up by aerating device 27, pressure relief device B29, valve B25, jointing B23, hollow tube cathode B22 and auxiliary gas-guide pipeline is correctly communicated with, under guaranteeing that valve B2510 is in closed condition; Start aerating device 27, inflation boosting process is carried out to pressure relief device B29, and at any time the numerical value of pressure display unit B32 is observed with the pressure in monitoring pressure releasing device B29, until the pressure values preset.
The loop of the source of welding current, TIG welding gun A, TIG welding gun B is connected by step 2., the hollow tube cathode A6 of TIG welding gun A5 is contacted workpiece, sets up TIG welding gun B21 by the mode of the high frequency starting the arc and also set up TIG electric arc stable between TIG welding gun A5 and workpiece 4 by the mode contacting the starting the arc with normal, the stable TIG electric arc between workpiece 4.
Step 3. is after electric arc penetrates workpiece 4 and penetrating arc 7 is stablized in foundation, set up the subnormal ambient of hollow tube cathode A6, start valve A10, make the gas circuit conducting of foundation, hollow tube cathode A6 is in negative pressure state, set up the hyperbaric environment of hollow tube cathode B22 simultaneously, start valve B25, make the gas circuit conducting of foundation to gas injection in electric arc, after several milliseconds, between TIG welding gun A5 and TIG welding gun B21, set up new penetrating arc 7, as shown in Figure 4, the increasing of penetrating arc deflection, constraint (restraint) degree strengthen.
In welding process, by changing welding condition as electric current, throughput, camber etc., and the pressure values of two hollow tube cathode, the penetration power of penetrating arc 7 is adjusted, realizes the welding of slab.
The embodiment four of this welding method, if use AC power, its concrete operation step is:
Step 1 and step 2 are all same as described above.Just after step 3, add following operation: after penetrating arc is stablized in foundation, when TIG welding gun B21 connects timing, the switch of controller 20 is communicated with 1. direction, the source of welding current and control system 1, TIG welding gun B21, workpiece 4 is made to form loop and carry out cleaning action of the cathode to workpiece 4, simultaneously the TIG arc extinction of TIG welding gun A5 side; When TIG welding gun B21 connects negative, the switch of controller 20 is communicated with 2. direction, makes the source of welding current and control system 1, TIG welding gun B21, TIG welding gun A5 forms loop and weld workpiece 4.
In the embodiment three of this above-mentioned welding method and embodiment four, also can carry out negative pressure or HIGH PRESSURE TREATMENT to one of them hollow tube cathode, increase arc stiffness by air-flow guide effect.
Embodiment 1:
A kind of air-flow guiding non-consumable gas shielded arc welding welding method of the present embodiment, in PAW-GTAW mode, select dc source, concrete operations are as follows:
Before step 1. is welded, after the position to be welded polishing of the thick aluminium alloy plate of workpiece 8mm to be welded, cleaning, be fixed on welding tool setup; Shown in Fig. 1, carry out the connection of gas circuit, water route, circuit, plasma gun and TIG welding gun lay respectively at workpiece both sides, and the axes normal of two welding guns is also connected on the same source of welding current in workpiece simultaneously; The gas circuit set up by air extractor, pressure relief device, valve, jointing, hollow tube cathode and auxiliary gas-guide pipeline is correctly communicated with; Under valve is in closed condition, starts air extractor, pumped down process being carried out to pressure relief device, by observing to the numerical value of pressure display unit the negative pressure value 0.03Mpa ~ 0.08Mpa making the pressure in pressure relief device reach default.
It is fixed that step 2. carries out technological parameter: welding current 100 ~ 180A, speed of welding 0.1m/min, plasma gun side camber 4mm, TIG welding gun side camber 3mm, shielding gas flow amount 15L/min, ion-gas flow 3L/min.Controller is switched to 2. path, the hollow tube cathode contact workpiece of TIG welding gun, first sets up normal plasma-arc, secondly by the mode of the contact starting the arc, is mentioned gradually by the hollow tube cathode of TIG welding gun, set up stable TIG electric arc.
Step 3., after electric arc penetrates workpiece and penetrating arc is stablized in foundation, is set up the subnormal ambient of hollow tube cathode, is started valve, make the gas circuit conducting of foundation, hollow tube cathode is in negative pressure state, after several milliseconds, new penetrating arc is stablized, and welds, until complete the welding of workpiece.
The welded piece that this example obtains is not compared with carrying out the workpiece of Negative pressure acquisition under identical parameters, shaping more excellent.
Claims (9)
1. an air-flow guiding non-consumable gas shielded arc welding welding method, it is characterized in that: plasma gun (2) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, the axes normal workpiece (4) of plasma gun (2) and TIG welding gun A (5) is also connected in the same source of welding current and control system (1) thereof simultaneously, after penetrating arc (7) is set up, by air extractor to process of bleeding in the hollow pipe of the hollow tube cathode A (6) in TIG welding gun A, most advanced and sophisticated formation stable negative pressure condition in the hollow pipe of hollow tube cathode A and outside hollow pipe, increase arc stiffness and energy density.
2. according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 1, it is characterized in that, equipment therefor, comprising: plasma gun (2), TIG welding gun A (5), the source of welding current and control system (1) thereof, controller (20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17); Plasma gun (2) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, the equal vertical workpiece of axis (4) of plasma gun (2) and TIG welding gun A (5) and both axis are on the same line, the electrode of plasma gun (2) and the hollow tube cathode A (6) of TIG welding gun A (5) are connected in the same source of welding current and control system (1) thereof via controller (20), and controller (20) is also connected with workpiece (4); The rear end of hollow tube cathode A (6) is connected with pressure relief device A (15), air extractor (17) successively by jointing A (8) and valve A (10), form current path, pressure relief device A (15) is also provided with pressure display unit A (12).
3., according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 1, it is characterized in that, the source of welding current can be dc source or variable polarity power source.
4. according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 1; it is characterized in that; by regulating pressure status and the technological parameter of arc center; and then regulate energy density and the arc stiffness of welding arc; thus regulate thermal weld stress and control appearance of weld, and realize the welding of heavy thickness workpiece.
5. an air-flow guiding non-consumable gas shielded arc welding welding method, it is characterized in that, TIG welding gun B (21) and TIG welding gun A (5) lay respectively at workpiece (4) both sides, hollow tube cathode A (6) in TIG welding gun A and the hollow tube cathode B (22) in TIG welding gun B is connected in the same source of welding current and control system (1) thereof, after penetrating arc (7) is set up, to bleed in hollow pipe to the hollow tube cathode A (6) in TIG welding gun A process, make in the hollow pipe of hollow tube cathode A and the outer most advanced and sophisticated formation stable negative pressure condition of hollow pipe, increase arc stiffness and energy density, being processed carrying out inflation in the hollow pipe of the hollow tube cathode B (22) in TIG welding gun B by aerating device simultaneously, making in the hollow pipe of hollow tube cathode B and the outer most advanced and sophisticated formation stable high voltage state of hollow pipe, or only negative pressure or HIGH PRESSURE TREATMENT are carried out to one of them hollow tube cathode, increase arc stiffness and energy density by air-flow guide effect.
6. according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 5, it is characterized in that, equipment therefor, comprising: TIG welding gun B (21), TIG welding gun A (5), the source of welding current and control system (1) thereof, controller (20), jointing A (8), valve A (10), pressure relief device A (15), air extractor (17), jointing B (23), valve B (25), aerating device (27), pressure relief device B (29), TIG welding gun B (21) and TIG welding gun A (5) lays respectively at workpiece (4) both sides, hollow tube cathode B (22) in TIG welding gun B (21) and hollow tube cathode A (6) axis in TIG welding gun A (5) on the same line and all vertical workpiece (4), and the hollow tube cathode B (22) in TIG welding gun B (21) and the hollow tube cathode A (6) in TIG welding gun A (5) is connected in the same source of welding current and control system (1) thereof by control device (20), control device (20) is also connected with workpiece (4), the rear end of hollow tube cathode A (6) is connected with pressure relief device A (15), air extractor (17) successively by jointing A (8) and valve A (10), form current path, pressure relief device A (15) is also provided with pressure display unit A (12).The rear end of hollow tube cathode B (21) is connected with pressure relief device B (29), aerating device (27) successively by jointing B (23) and valve B (25), form current path, pressure relief device B (29) is also provided with pressure display unit B (32).
7., according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 5, it is characterized in that, the described source of welding current is dc source or is variable polarity power source.
8., according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 5, it is characterized in that, the gas in aerating device is inert gas.
9. according to a kind of air-flow guiding non-consumable gas shielded arc welding welding method according to claim 5; it is characterized in that; by regulating pressure status and the technological parameter of arc center; and then regulate energy density and the arc stiffness of welding arc; thus regulate thermal weld stress and control appearance of weld, and realize the welding of heavy thickness workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018662.0A CN105436722B (en) | 2016-01-12 | 2016-01-12 | A kind of air-flow guiding non-consumable gas shielded arc welding welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018662.0A CN105436722B (en) | 2016-01-12 | 2016-01-12 | A kind of air-flow guiding non-consumable gas shielded arc welding welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105436722A true CN105436722A (en) | 2016-03-30 |
| CN105436722B CN105436722B (en) | 2018-07-13 |
Family
ID=55547600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610018662.0A Active CN105436722B (en) | 2016-01-12 | 2016-01-12 | A kind of air-flow guiding non-consumable gas shielded arc welding welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105436722B (en) |
Citations (5)
| 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 |
| CN1559510A (en) * | 2004-03-12 | 2005-01-05 | 邢乐道 | Compound medicine for treating Aids, cancer and its preparation method |
| 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 |
-
2016
- 2016-01-12 CN CN201610018662.0A patent/CN105436722B/en active Active
Patent Citations (5)
| 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 |
| CN1559510A (en) * | 2004-03-12 | 2005-01-05 | 邢乐道 | Compound medicine for treating Aids, cancer and its preparation method |
| 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 |
|---|
| 崔旭明等: "双面电弧焊接工艺及物理过程分析", 《北京航空航天大学学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105436722B (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206578445U (en) | A kind of pair of thermal source hybrid welding torch and double thermal source composite welding systems | |
| CN103071935B (en) | Laser-arc composite welding device based on heat input control and welding method | |
| CN109604831B (en) | Laser TIG (tungsten inert gas) hybrid welding process for improving laser welding undercut of titanium and titanium alloy sheets | |
| CN109079287B (en) | Three-wire gas-shielded indirect arc welding method and device and application thereof | |
| CN107790886B (en) | Pulsed negative pressure formula laser enhancing KTIG and MIG composite welding apparatus and method | |
| AU2020103796A4 (en) | A Laser-GMA Arc Composite Heat Source Wire-filled Welding Method | |
| CN103128423A (en) | Laser tungsten inert gas (TIG) arc coaxial hybrid welding method with additional high frequency magnetic field and device | |
| WO2018145543A1 (en) | Dual heat source hybrid welding torch and welding method | |
| CN102848085A (en) | Laser-single power double-wire pulse arc hybrid welding system and use method for same | |
| CN101817112A (en) | Single power supply single-surface serial double-TIG (Tungsten Inert Gas) arc welding method | |
| CN104985303B (en) | A kind of InFocus TOPTIG twin arc complex welding methods | |
| CN107042351B (en) | A kind of non-consumable gas shielded arc welding welding wire end position determination method | |
| CN102069306A (en) | Laser-double-wire pulsed arc composite welding system | |
| CN109926695A (en) | A kind of robot single machine is the same as the double non-melt pole electrical arc increasing material manufacturing method and apparatus that fill silk of mouth | |
| CN113427131A (en) | Pulse wire feeding method for laser-GMA electric arc composite heat source wire filling welding | |
| CN101590572A (en) | The vertical double-sided double-arc plasma symmetry welding method | |
| CN102069305B (en) | Laser twin-electric arc compound welding system | |
| CN104668791A (en) | Coaxial distribution plasma-cold metal transfer composite arc welding method and coaxial distribution plasma-cold metal transfer composite arc welding device | |
| CN103071937B (en) | Laser-TIG (Tungsten Inert Gas) arc rangefinder hybrid welding method and device with addition of high frequency magnetic field | |
| CN104785931A (en) | Plasma-submerged arc hybrid welding system and welding method thereof | |
| CN110497065B (en) | Variable-polarity three-wire gas-shielded indirect arc welding method and device and application thereof | |
| CN104985326A (en) | Bilateral laser-InFocus electric arc composite welding method for T-type joint | |
| CN114700643A (en) | High-deposition low-heat-input plasma-twin-wire bypass arc welding device and method | |
| CN210633115U (en) | Welding gun head and laser-arc hybrid welding device | |
| CN108544068B (en) | Welding quality control system and method for arc temperature difference before and after plasma arc perforation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Yize Inventor after: Zhang Ruiying Inventor after: Jiang Fan Inventor after: Bai Lilai Inventor after: Xu Bin Inventor after: Li Xiaoxu Inventor before: Chen Shujun Inventor before: Zhang Ruiying Inventor before: Jiang Fan Inventor before: Bai Lilai Inventor before: Xu Bin Inventor before: Li Xiaoxu |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180510 Address after: 100102 room 2303, 213 / F, East Garden, Wangjing garden, Chaoyang District, Beijing. Applicant after: Chen Yize Address before: No. 100, Chaoyang District flat Park, Beijing, Beijing Applicant before: Beijing University of Technology |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |