CN110497065A - A kind of three gas shield indirect arc welding method, apparatus of Variable Polarity and its application - Google Patents
A kind of three gas shield indirect arc welding method, apparatus of Variable Polarity and its application Download PDFInfo
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- CN110497065A CN110497065A CN201910818682.XA CN201910818682A CN110497065A CN 110497065 A CN110497065 A CN 110497065A CN 201910818682 A CN201910818682 A CN 201910818682A CN 110497065 A CN110497065 A CN 110497065A
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
Abstract
The present invention provides a kind of three gas shield indirect arc welding method, apparatus of Variable Polarity and its application.The method implements welding process by three root wires and two variable polarity power sources；It is characterized in that, main silk to be connected to a pole of two variable polarity power sources, remaining two Gen Biansi is respectively connected to another pole of two variable polarity power sources before welding；Welding workpiece is not connect with two variable polarity power sources；When welding, start two variable polarity power sources simultaneously, two variable polarity power sources work asynchronously and the polarity connecting with the main silk is identical always, pass through the positive and negative pole-change of the polar periodicity of the variable polarity power source, welding wire surrounding magnetic field is distributed to obtain periodical regulation, realizes the welding process of the periodic wobble of coupling indirect arc.The present invention is by regulation arc deflection, it can be achieved that the accurate distribution of welding arc heat-source energy, effectively solves the problems, such as that thin plate High Speed Welding burns the side wall not molten and side wall starting the arc in the generation and slab narrow gap welding of defect.
Description
Technical field
The invention belongs to materials processing technology fields, are related to a kind of Variable Polarity indirect arc soldering method, specifically, especially
It is related to a kind of three gas shield indirect arc welding method, apparatus of Variable Polarity and its application.
Background technique
With the development of modern industry, it is led in building, shipbuilding, bridge, machinery, pressure vessel, track, pipeline etc.
Domain, large-sized structural parts using more and more extensive.These large-sized structural parts are manufactured, slab application occupies larger proportion[1-3].It improves
The welding efficiency of slab become very it is necessary to.
Slab narrow gap welding technology can make bonding area that can reduce 30% or more, greatly save packing material, show
The promotion welding efficiency of work.And for traditional gas metal-arc welding, welding gun connects a pole of power supply, and workpiece connects power supply
Another pole, conductive path establish between plate and workpiece.And in narrow gap welding, the welding wire of gas metal-arc welding
Easily with the side wall starting the arc of plate, root of weld incomplete fusion defect is caused to generate, which has limited the reductions of plate butt-joint clearance.
Different from traditional welding method, the workpiece of indirect arc welding is not connected to power supply, and electric arc only results between electrode.
The generation of the side wall starting the arc in narrow gap welding can be effectively prevented from.The research of indirect arc is concentrated mainly on mariages Indirect Electro at present
Arc-welding[4-5], and twin-wire indirect arc has the shortcomings that apparent heat input is insufficient.
For the problem of twin-wire indirect arc heat input deficiency, patent of invention (application No. is 201510145041.4) is proposed
A kind of method of three gas shield indirect arcs welding, as shown in Figure 1, being three indirect arc welding schematic diagrams, main silk connects
The cathode of two DC power supplies is connect, both sides silk is separately connected the anode of two DC power supplies, the introducing of third root wire, between improving
The distribution for connecing electric arc surrounding magnetic field expands the adjustable extent of indirect arc welding parameter.Improve indirect arc heat input not
The disadvantage of foot.But this method, there are still deficiency, both sides silk makes between winner's silk and side silk about main silk central symmetry in structure
Magnetic field about main silk central symmetry, cause two indirect arcs mutually indepedent and shift in tail portion, cause electric arc in this way
It is weaker to the heat effect of weld seam center, it is also easy to produce Weld pipe mill protrusion and lack of inter-run fusion defect.
For three indirect arc form divergence problems, patent of invention (application No. is 201811075326.5) proposes one
Kind novel three gas shield indirect arcs welding method, apparatus and its application, as shown in Fig. 2, being novel three Indirect Electros
The schematic diagram of arc-welding, main silk connect the anode of two DC power supplies, and side silk is separately connected the cathode of two DC power supplies, power supply connection
Mode has adjusted the distribution of welding wire surrounding magnetic field and electric field, and two indirect arcs can be made to be combined to together, and arc shape is concentrated, into
One step improves the fusion penetration of three indirect arc weldings.But this method, there is also deficiency, arc shape concentration leads to indirect arc
It is less to weld sidewall heating, it is also easy to produce weld sidewall incomplete fusion defect.
Based on defect and its Producing reason existing for above-mentioned three indirect arc weldings, it is necessary to provide a kind of novel three
The method of silk gas shield indirect arc welding is to solve the above problems.
Bibliography:
[1]Ohata M.,Toyoda M..Damage concept for evaluating ductile cracking
of steel structure subjected to large-scale cyclic straining[J].Science&
Technology of Advanced Materials,2016,5(5):241-249.
[2]Fan Z,Wang Z,Tang J.Analysis on temperature field and
determination of temperature upon healing of large-span steel structure of
the National Stadium[J].Journal of Building Structure,2007,28(2):32-40.
[3]Jia GE,Wang S,Liang H,et al.Design and research of the large-span
steel structure of the badminton gymnasium for 2008 Olympic Games[J].Journal
of Building Structures,2007,28(6):10-17.
[4] Cao Meiqing, Zou Zeng great, Wang Chunmao waits influence of the welding current to arc characteristic of twin-wire indirect arc
[J] welds journal, 2005,26 (12): 47-50.
[5] influence [J] the welding of the magnetic field Zhang Shunshan, Zou Yong, Zou Zeng great to the twin-wire indirect arc welding droplet transfer
Report, 2011,32 (6): 69-72.
Summary of the invention
According to existing three indirect arc soldering methods set forth above the problem of welding, a kind of Variable Polarity is provided
Three gas shield indirect arc welding method, apparatus and its application.The present invention mainly by using two variable polarity welding power supplies,
The periodical regulation of welding wire surrounding magnetic field distribution is realized, and then realizes the regulation of indirect arc heating location.When main silk is
When positive, arc shape is concentrated, it is ensured that the good fusion of weld seam interlayer；When main silk is cathode, electric arc is deflected to two sides, can
Guarantee the good fusion of weld sidewall.Three gas shield indirect arc weldings of Variable Polarity of the present invention solve side in narrow gap welding
Wall does not melt and the insoluble problem of weld seam interlayer.
The technological means that the present invention uses is as follows:
A kind of three gas shield indirect arc soldering methods of Variable Polarity, the method pass through three root wires and two pole-changings
Property power supply implement welding process；It is characterized in that, specifically including:
Before welding, main silk is connected to a pole of two variable polarity power sources, remaining two Gen Biansi is respectively connected to two changes
Another pole of polarity power；
Welding workpiece is not connect with two variable polarity power sources；
When welding, while starting two variable polarity power sources, two variable polarity power sources synchronous workings and with it is described
The polarity of main silk connection is identical always, passes through the positive and negative pole-change of the polar periodicity of the variable polarity power source, welding wire surrounding magnetic field
Distribution obtains periodical regulation, realizes the welding process of the periodic wobble of coupling indirect arc.
Further, two Gen Biansi are arranged in main silk two sides respectively, and are symmetric about main silk；The two side silks
20 °~120 ° of angle is constituted with the main silk respectively, the two side silks intersect respectively with the extended line of the main silk and two hand over
It puts in the same horizontal line, and the two sides silks are about the main silk mirror symmetry.
Further, when the main silk and two variable polarity welding power supply cathode are connected, two indirect arcs are to two
Side silk deflection, coupled arc become to disperse, and arc energy density reduces；When the main silk and two variable polarity welding power supplies
When anode is connected, two indirect arcs are deflected to main silk, and electric arc becomes to concentrate, and coupled arc energy density increases；Using the energy
Density can the coupling indirect arc of flexible regulation base material is processed, pass through the control for changing two variable polarity welding power supplies
Parameter processed, the control parameter include but is not limited to the parameters such as frequency, duty ratio, electric current and the voltage of power supply, realize butt welding
The accurate flexible regulation process of silk and base material heat input.
Further, the frequency of two variable polarity power source Variable Polarities be 10Hz-500Hz, and export electric current side
To identical, phase is identical, and the electric current of the main silk is always the sum of the electric current of two side silks.
Further, welding total current range is maintained at 240A~600A, and the wire feed rate of the main silk is controlled in 3.5m/
Min~15m/min, speed of welding are controlled in 0.1m/min~4.0m/min.
Further, it can be CO that the welding method, which carries out protective gas employed in welding process,2, in Ar one
Kind or CO2With the gaseous mixture of Ar, protection air-flow is 0.1~50L/min.
The invention also discloses a kind of device of three gas shield indirect arc soldering methods of Variable Polarity described in realize,
It is characterized in that:
Described device is made of three root wires and two variable polarity welding power supplies；
Wherein, main silk is connected to a pole of two variable polarity welding power supplies；Two Gen Biansi are respectively connected to two institutes
State another pole of variable polarity welding power supply；The two side silks are arranged in the main silk two sides respectively, and are in about the main silk
It is symmetrical；Two sides silks and the main silk angle are maintained at 20 ° -120 °, and the two sides silks and the main silk prolong
Long line intersect respectively and two intersection points in the same horizontal line；
When welding, two variable polarity power sources work asynchronously and the polarity connecting with the main silk is identical always, pole-changing
Property frequency be 10Hz-500Hz, and export current direction it is identical, phase is identical, the electric current of main silk be always both sides silk electricity
The sum of stream.
The invention also discloses a kind of thin plate high-speed welding method based on three gas shield indirect arcs of Variable Polarity,
It is characterized in that, using the above method, and during implementing High Speed Welding, using vertical plane where being parallel to welding wire as welding direction,
It is filling metal with three welding wires, using heat entrained by the arc column heat of indirect arc and droplet transfer, realization is filled out
Fill the welding of metal and welding workpiece.
The invention also discloses a kind of slab narrow gap welding technology based on three gas shield indirect arcs of Variable Polarity,
It is characterized by: using the above method, and in implementing welding process, using vertical plane where being parallel to welding wire as welding direction,
To realize square groove, butt-joint clearance less than narrow gap multi-layer multi-pass welding under the conditions of 10mm.
Compared with the prior art, the invention has the following advantages that
1) three gas shields indirect arc welding workpiece provided by the invention does not connect power supply, and electric arc is only formed in welding wire end
Indirect arc does not occur side wall starting the arc phenomenon in narrow gap welding.
2) present invention realizes the periodicity of the Distribution of Magnetic Field between indirect arc by using two variable polarity welding power supplies
Regulation is realized arc shape in electric power polarity conversion process and is concentrated and electricity by the characteristic of electric arc swing and welding wire arrangement
Periodically switching for arc state dispersion, can accuracy controlling electric arc heated position and the heat input to base material.
To sum up, design scheme of the invention, it can be achieved that arc shape controllable adjustment, main silk be cathode when, electric arc be biased to
Two sides can sufficiently heat plate side wall, improve side wall and do not fuse problem；When main silk is anode, electric arc is concentrated, and can inhibit weld seam layer
Between protrusion and interlayer do not melt.The present invention by regulation arc deflection, it can be achieved that welding arc heat-source energy accurate distribution, effectively
Solve the problems, such as that thin plate High Speed Welding burns the side wall not molten and side wall starting the arc in the generation and slab narrow gap welding of defect.
The present invention can be widely popularized in narrow gap welding and thin plate high-speed welding field based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that main silk connects three indirect arc welding schematic illustrations of cathode in the prior art.
Fig. 2 is that main silk connects positive three indirect arc welding schematic illustrations in the prior art.
Fig. 3 is three indirect arc welding schematic illustrations of Variable Polarity of the present invention.
Fig. 4 is three indirect arc welding wire distribution mode schematic diagrames in the present invention, wherein (I) is sight perpendicular to weldering
The schematic diagram in direction is connect, (II) is the schematic diagram that sight is parallel to welding direction.
Fig. 5 is two variable polarity welding power supply current output waveform figures, wherein (a) is 1 current waveform of variable polarity power source, (b)
2 current waveform of variable polarity power source.
Fig. 6 is the arc shape figure of three indirect arc weldings of Variable Polarity of the present invention, wherein electricity when (a) main silk is anode
Arc state, arc shape when (b) main silk is cathode.
Fig. 7 is three indirect arc thin plate high-speed welding embodiment schematic diagrams of Variable Polarity in the present invention.
Fig. 8 is three gas shield indirect arc slab narrow gap welding embodiment schematic diagrams of Variable Polarity in the present invention.
In figure: 1, the first variable polarity power source；2, the second variable polarity power source；3, main silk；4, the first side silk；5, the second side silk；
6, base material to be welded；7, ceramic substrate.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.It is real to the description of at least one exemplary embodiment below
It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.Technology known for person of ordinary skill in the relevant, side
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, appointing should be construed as merely illustratively to occurrence, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention: the noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
As shown in figure 3, the method is logical the invention discloses a kind of three gas shield indirect arc soldering methods of Variable Polarity
It crosses three root wires and two variable polarity power sources implements welding process；It specifically includes:
Before welding, the root wire in three welding wires is first connected to two variable polarity power source (i.e. Variable Polarities
One pole of power supply 1 and variable polarity power source 2), remaining two root wire is separately connected the another of variable polarity power source 1 and variable polarity power source 2
One pole, welding workpiece are not connect with two variable polarity power source.
The welding wire of two variable polarity welding power supply anodes of above-mentioned connection is then arranged in centre, claims silk 3 based on the welding wire；
Remaining two root wire is arranged in the both sides of the main silk 3 respectively, this two root wire is referred to as side silk, i.e. the first side silk 4 and second
Side silk 5；
In spatial dimension, first constituted between silk 5 and main silk 3 between silk 4 and main silk 3 and when second 20 °~
120 ° of angle, two sides silks intersect respectively with the extended line of the main silk 3 and two intersection points in the same horizontal line；Such as Fig. 4
Shown, the side silk meets following condition with orthographic projection of the main silk 3 in the plane perpendicular to welding direction: described first
Angle in silk 4 and the main silk 3 and second between silk 5 and the main silk 3 is 20 °~120 °, is parallel to welding on edge
The silk of side described in direction two is about main 3 mirror symmetry of silk；
When welding, enables described two variable polarity power sources 1 and 2 while starting, the current wave of two variable polarity welding power supplies output
Shape is as shown in figure 5, the current direction of two variable polarity welding power supplies output is identical, and size is identical, and pole-changing resistant frequency is identical.Such as Fig. 6
(a) shown in when main silk 3 is anode, arc shape is concentrated, and can sufficiently heat Weld pipe mill.As shown in Fig. 6 (b), when main silk 3 is
When cathode, electric arc is biased to two sides, can sufficiently heat weld sidewall.According to preset welding procedure, by adjusting the weldering of two Variable Polarities
The regulation of the achievable arc energies such as pole-changing resistant frequency, duty ratio, welding current and the weldingvoltage of power supply is connect, and then is realized female
The welding of material 6.
Welding total current range is maintained at 240A~600A, pole-changing resistant frequency 50Hz~500Hz, the wire feed of the main silk 3
Speed control is controlled in 3.5m/min~15m/min, speed of welding in 0.1m/min~4.0m/min；Main silk and side silk angle model
Enclose is 20 °~120 °.The welding method, which carries out protective gas employed in welding process, to be one of CO2, Ar
Or the gaseous mixture of CO2 and Ar, protection air-flow are 0.1~50L/min.
As shown in fig. 7, the thin plate high speed that the invention also discloses a kind of based on three gas shield indirect arcs of Variable Polarity
Welding method, which is characterized in that including adopting with the aforedescribed process, and during implementing High Speed Welding, to be parallel to where welding wire
Vertical plane is welding direction, is filling metal with three welding wires, utilizes the arc column heat of indirect arc and droplet transfer institute
The heat of carrying realizes the welding of filling metal and welding workpiece.
As shown in figure 8, the invention also discloses a kind of slab narrow based on three gas shield indirect arcs of Variable Polarity
Gap welding procedure, including adopt with the aforedescribed process, and in implementing welding process, to be parallel to welding wire place vertical plane as welding
Direction is greater than or equal to 20mm multi-layer multi-pass welding to realize that square groove, butt-joint clearance are less than to obtain under the conditions of 10mm.
Concrete operating principle of the present invention are as follows:
The present invention is by using two variable polarity welding power supplies and to pole-changing resistant frequency, duty ratio, welding current and welding
The regulation of voltage realizes the regulation that the arc shape collection in indirect arc welding neutralizes arc shape diverging, makes three indirect arcs
Heating location and heat input it is precisely controlled.When main silk is anode, it is respectively formed between main silk 3 and two side silks
Indirect arc can be deflected to main silk simultaneously, and two indirect arc direct-couplings are the biggish single electric arc of a current density, electric arc shape
State is concentrated, it is ensured that the interlayer of weld seam fuses.When main silk is cathode, it is respectively formed between main silk 3 and two side silks indirect
Electric arc can be deflected to both sides silk simultaneously, arc shape diverging, it is ensured that the sidewall fusion of weld seam.In addition to this, it is keeping welding
Under conditions of electric current is constant, by adjusting pole-changing resistant frequency, it can be achieved that the control that the neutralization of arc shape collection dissipates, reaches weld seam side
The reasonable distribution of wall and interlayer energy.The present invention is controllable using three indirect arc forms of Variable Polarity, can meet thin plate high speed
The efficient weldings demand such as welding and slab narrow gap welding.
Embodiment 1: three gas shield indirect arc thin plate High Speed Weldings of Variable Polarity.
As shown in fig. 7, main silk 3 and the angle of horizontal direction are 50 °, the first side using welding wire distribution mode shown in Fig. 4
Silk 4 and the second side silk 5 are respectively 30 ° with main 3 angle of silk, and both sides silk is distributed in the two sides of main silk 3 and about main silk mirror image pair
Claim, and both sides silk is contacted with main silk 3 respectively, two contact points are in the same horizontal line.Wherein, three steel welding wire models
ER50-6, main 3 diameter of silk are 1.6mm, and both sides silk diameter is 1.2mm, and power supply uses two AC power sources, corresponding protection gas
Body is 80%CO2 and 20%Ar gaseous mixture；Plate model Q235, board dimension are 300mm × 150mm × 2mm, plate docking
Gap 1mm, welding gun height be 6mm, welding total current be 320A, pole-changing resistant frequency 200Hz, speed of welding 2800mm/min,
As a result it has obtained showing that smooth even is consistent, back of weld good knitting does not have poor weld.
Embodiment 2: three indirect arc slab narrow gap weldings of Variable Polarity gas shield.
Such as Fig. 8, as shown in Figure 4, main silk 3 and horizontal direction angle are 50 °, main silk 3 and Bian Si for the welding wire distribution used
Angle is 30 degree, and using main silk diameter 1.6mm, the welding wire of both sides silk diameter 1.2mm, power supply uses two AC power sources, corresponding
Protective gas be 80%CO2 and 20%Ar gaseous mixture；Welding wire model ER50-6, welding base metal are Q235 mild steel, plate
Having a size of 300mm × 150mm × 20mm, square groove, base material butt-joint clearance is 8mm, and the back side uses ceramic substrate 7, use
Total welding current is 320A, and pole-changing resistant frequency is 150Hz, and it is fine to have obtained multilayer multi-steps forming by speed of welding 550mm/min
Weld seam.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of three gas shield indirect arc soldering methods of Variable Polarity, the method passes through three root wires and two Variable Polarities
Power supply implements welding process；It is characterized in that, specifically including:
Before welding, main silk is connected to a pole of two variable polarity power sources, remaining two Gen Biansi is respectively connected to two Variable Polarities
Another pole of power supply；
Welding workpiece is not connect with two variable polarity power sources；
When welding, while starting two variable polarity power sources, two variable polarity power sources synchronous workings and with the main silk
The polarity of connection is identical always, passes through the positive and negative pole-change of the polar periodicity of the variable polarity power source, the distribution of welding wire surrounding magnetic field
Periodical regulation is obtained, realizes the welding process of the periodic wobble of coupling indirect arc.
2. three gas shield indirect arc soldering methods of Variable Polarity according to claim 1, which is characterized in that two Gen Biansi
It is arranged in main silk two sides respectively, and is symmetric about main silk；Two sides silks constituted respectively with the main silk 20 °~
120 ° of angle, two sides silks intersect respectively with the extended line of the main silk and two intersection points in the same horizontal line.
3. three gas shield indirect arc soldering methods of Variable Polarity according to claim 1, which is characterized in that as the master
When silk is connected with two variable polarity welding power supply cathode, two indirect arcs are deflected to both sides silk, and coupled arc becomes to disperse,
Arc energy density reduces；When the main silk and two variable polarity welding power supply anodes are connected, two indirect arcs are to master
Silk deflection, electric arc become to concentrate, and coupled arc energy density increases；Using the energy density can flexible regulation coupling Indirect Electro
Arc processes base material, by changing the control parameter of two variable polarity welding power supplies, realizes to welding wire and base material heat
The accurate flexible regulation process of input.
4. three gas shield indirect arc soldering methods of Variable Polarity according to claim 1, which is characterized in that described in two
The frequency of variable polarity power source Variable Polarity is 10Hz-500Hz, and the current direction exported is identical, and phase is identical, the main silk
Electric current is always the sum of the electric current of two side silks.
5. three gas shield indirect arc soldering methods of Variable Polarity according to claim 4, which is characterized in that the total electricity of welding
Stream range is maintained at 240A~600A, and the wire feed rate control of the main silk is in 3.5m/min~15m/min, speed of welding control
In 0.1m/min~4.0m/min.
6. three gas shield indirect arc soldering methods of Variable Polarity according to claim 4, which is characterized in that the welding
It can be CO that method, which carries out protective gas employed in welding process,2, one of Ar or CO2With the gaseous mixture of Ar, gas is protected
Stream is 0.1~50L/min.
7. a kind of three gas shield indirect arc weldings of Variable Polarity realized as described in claim 1-6 any one claim
The device of method, it is characterised in that:
Described device is made of three root wires and two variable polarity welding power supplies；
Wherein, main silk is connected to a pole of two variable polarity welding power supplies；Two Gen Biansi are respectively connected to two changes
Another pole of the polarity source of welding current；The two side silks are arranged in the main silk two sides respectively, and about the main silk in symmetrical
Distribution；The two side silks are maintained at 20 ° -120 °, and the extended line of two the side silks and the main silk with the main silk angle
Respectively intersection and two intersection points in the same horizontal line；
When welding, two variable polarity power sources work asynchronously and the polarity connecting with the main silk is identical always, Variable Polarity
Frequency is 10Hz-500Hz, and the current direction exported is identical, and phase is identical.
8. a kind of thin plate high-speed welding method based on three gas shield indirect arcs of Variable Polarity, which is characterized in that including such as
Method as claimed in any one of claims 1 to 6, and during implementing High Speed Welding, to be parallel to welding wire place vertical plane as weldering
Direction is connect, is filling metal with three welding wires, using heat entrained by the arc column heat of indirect arc and droplet transfer,
Realize the welding of filling metal and welding workpiece.
9. a kind of slab narrow gap welding technology based on three gas shield indirect arcs of Variable Polarity, it is characterised in that: including
Method as claimed in any one of claims 1 to 6, and in implementing welding process, to be parallel to welding wire place vertical plane as weldering
Direction is connect, to realize square groove, butt-joint clearance less than narrow gap multi-layer multi-pass welding under the conditions of 10mm.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818682.XA CN110497065B (en) | 2019-08-30 | 2019-08-30 | Variable-polarity three-wire gas-shielded indirect arc welding method and device and application thereof |
| PCT/CN2020/075670 WO2021036206A1 (en) | 2019-08-30 | 2020-02-18 | Variable-polarity three-wire gas-shielded indirect arc welding method and device, and use thereof |
| JP2021503552A JP7030371B2 (en) | 2019-08-30 | 2020-02-18 | Variable polarity three-wire gas protection indirect arc welding method, equipment and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818682.XA CN110497065B (en) | 2019-08-30 | 2019-08-30 | Variable-polarity three-wire gas-shielded indirect arc welding method and device and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110497065A true CN110497065A (en) | 2019-11-26 |
| CN110497065B CN110497065B (en) | 2021-03-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112139629A (en) * | 2020-09-23 | 2020-12-29 | 天津七所高科技有限公司 | High-frequency pulse three-wire indirect electric arc welding method and device |
| WO2021036206A1 (en) * | 2019-08-30 | 2021-03-04 | 大连理工大学 | Variable-polarity three-wire gas-shielded indirect arc welding method and device, and use thereof |
| CN113732446A (en) * | 2021-08-25 | 2021-12-03 | 中国船舶重工集团公司第七二五研究所 | Bypass coupling three-wire indirect electric arc welding method with controllable electric arc space structure |
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| CN112139629A (en) * | 2020-09-23 | 2020-12-29 | 天津七所高科技有限公司 | High-frequency pulse three-wire indirect electric arc welding method and device |
| CN113732446A (en) * | 2021-08-25 | 2021-12-03 | 中国船舶重工集团公司第七二五研究所 | Bypass coupling three-wire indirect electric arc welding method with controllable electric arc space structure |
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| JP2022502255A (en) | 2022-01-11 |
| JP7030371B2 (en) | 2022-03-07 |
| CN110497065B (en) | 2021-03-19 |
| WO2021036206A1 (en) | 2021-03-04 |
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