CN108057942A - A kind of short circuiting arc welding method and system - Google Patents
A kind of short circuiting arc welding method and system Download PDFInfo
- Publication number
- CN108057942A CN108057942A CN201711393148.6A CN201711393148A CN108057942A CN 108057942 A CN108057942 A CN 108057942A CN 201711393148 A CN201711393148 A CN 201711393148A CN 108057942 A CN108057942 A CN 108057942A
- Authority
- CN
- China
- Prior art keywords
- welding
- current
- circuit
- short
- frequency pulse
- 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.)
- Pending
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
- B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
-
- 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
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
-
- 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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Arc Welding Control (AREA)
Abstract
A kind of short circuiting arc welding method and system belong to the source of welding current and Automation of Welding apparatus field.This method has been superimposed high-frequency pulse current on the basis of the welding principal current of welding arc stage, improves welding quality using high-frequency effects.In short-circuit stage, wire-feed motor changes wire feed rate to carry out deceleration wire feed or pumpback welding wire to aid in the droplet transfer.It is another object of the present invention to propose a kind of short-circuiting transfer soldering system, to realize above-mentioned welding method, the system uses the method for alternate wire-feed, while can detect the short circuit in welding process or arcing state, and exports suitable welding current.In addition, in arc stage, the high-frequency pulse current more than 20kHZ can also be superimposed.Research shows to be welded using the electric arc for possessing high-frequency effects, can greatly improve welding stability and arc stiffness, in addition hf electric arc also possesses the effect of crystal grain refinement, this is conducive to the improvement of seam organization and joint performance.
Description
Technical field
The present invention relates to a kind of gas metal-arc welding method, especially by change in the welding process welding current and
Wire feed rate is implemented.The invention further relates to a kind of welding systems, belong to the source of welding current and Automation of Welding apparatus field.
Background technology
Gas metal-arc welding be it is a kind of it is at low cost, deformation is small, the welding method that is easily achieved, this welding method is just
It is widely used in field of machining.In the welding process, the mode of droplet transfer is varied, can usually pass through change
Welding parameter changes the mode of droplet transfer.Common transition method has spray transfer, globular transfer, short circuiting transfer etc.,
Middle short circuiting transfer method is widely used in plate sheet welding, because in small current welding, this transition method is more stable.
There are arcing and short-circuit two stages in the cycle of a short circuiting transfer, the heat that when arc burning generates is used for filler wire,
Molten drop is formed in wire tip, electric arc is short-circuited and extinguishes when molten drop touches molten bath, and molten drop is received in gravity, electromagnetism
It is transitioned into molten bath under the action of the power such as contracting power, surface tension, after completing the droplet transfer, can be weighed again between welding wire and molten bath
Electric arc newly is lighted, starts next transient period.
During short-circuiting droplet transition, it is easiest to generate splashing there are two time point, one is that the molten drop melted is firm
When rigid connection contacts molten bath, the contact area very little in molten drop and molten bath at this time, so flowing through molten drop and the contact surface in molten bath
Current density is very big easily to occur quick-fried stopping pregnancy life splashing.The other is after forming metal liquid bridge between welding wire and molten bath, due to
The effect of surface tension and electromagnetic contractile force, metal liquid bridge increasingly can carefully form constriction, this constriction is referred to as " foot bridge ",
Similarly, it is also very big to flow through the current density of foot bridge, so also easily generating splashing due to quick-fried break at this time.In order to inhibit the two
Moment generates splashing, it will usually the electric current in short-circuit initial stage and latter stage is reduced by the source of welding current, realizes the stable droplet transfer.
In addition detect foot bridge it is quick-fried it is disconnected before wire feeding motor can be controlled to make welding wire pumpback or slow down wire feed rate, utilize mechanical force
Foot bridge is broken, heat input in welding process can also be reduced by so doing splashing when can reduce welding.
The control method of current short circuiting arc welding is mainly to inhibit the input of welding energy in short-circuit stage, not
Too many improvement is done to the electric arc of arc stage.Research shows to be welded using the electric arc for possessing high-frequency effects, can significantly carry
High welding stability and arc stiffness, in addition hf electric arc also possess the effect of crystal grain refinement, this is conducive to seam organization and connect
The improvement of head performance.
The content of the invention
It is an object of the invention to propose a kind of short circuiting arc welding method, this method is in the welding master of welding arc stage
High-frequency pulse current has been superimposed on the basis of electric current, has improved welding quality using high-frequency effects.In short-circuit stage, wire-feed motor
Change wire feed rate to carry out deceleration wire feed or pumpback welding wire to aid in the droplet transfer.
To achieve these goals, welding method proposed by the present invention comprises the following steps：
A) after arc stage starts, welding principal current is made to keep Ip1；
B) postpone Tp, weld principal current exponential damping afterwards and to arcing background current Iab and short-circuit stage is waited to start；
C) after short-circuit stage starts, welding principal current first is promoted to Is to rise slope K 1；
D) welding principal current, short-circuit stage electric current not more than Isp, if short after reaching Isp are promoted to rise slope K 2
The road stage does not terminate also, keeps constant current；
E) after detecting that next cycle arc stage starts, step a is repeated；
After postponing Thd since the arc stage during step a to b, start overlapped high-frequency pulse current, high-frequency electrical pulses
The amplitude of stream is Ip2, and the superposition time is Thf.Wherein Thd can be equal to 0ms, you can be folded immediately after arc stage starts
High frequency pulse electric current, the frequency of overlapped high-frequency pulse current is F.
Even if more than his arcing of burning voltage, even if less than his short circuit of short-circuit voltage；
Step a arc stages into b first keep a larger peak point current Ip1, then continuously decrease the way of electric current
Benefit is not only to have ensure that the stability of arcing initial arc but also thermal weld stress can be adjusted in the arcing later stage.
Step c will weld principal current into d and be promoted to the benefit of Ip1 in two steps：Reduce heat input, energy at short-circuit initial stage
It enough prevents that metal liquid bridge is quick-fried disconnected, increases electric current in short-circuit mid-term, the droplet transfer can be promoted, high current is kept in the short-circuit later stage
Help to improve the arc stability of next cycle arc stage.In order to further reduce the generation of quick-fried disconnected splashing, can also regard
Situation uses the method for reducing short-circuit initial stage and short-circuit later stage electric current, and specific practice is：Short circuit first reduces welding immediately after starting
Principal current starts fast lifting electric current again to Ib after Tb；Short-circuit latter stage drops immediately after predicting arc stage at hand
Low welding current again immediately gos up electric current to Ip1 after arc stage starts to Ib.The prediction of arc stage may be employed
The method that can arbitrarily realize the function in the prior art.
Can be calculated to judge based on the variation of weldingvoltage signal in step a and step c arc stage and
The beginning of short-circuit stage.
Wire feed rate can also be changed during step a to step d is carried out to aid in the droplet transfer.Arc stage is certainly
Start after postponing Tsd, wire-feed motor is sent into welding wire with arcing wire feed rate Va；Short-circuit stage is from after starting delay Tad, with short circuit
Wire feed rate Vs is sent into or pumpback welding wire.
Va scopes are 2m/min~30m/min, and Vs scopes represent pumpback welding wire for -30m/min~30m/min negative values.
The value range for the arcing background current Iab that the above is previously mentioned is 100A~200A；Background current Ib scopes
For 10A~100A；Arcing peak I p1 scopes are 200A~400A；The high-frequency pulse current peak I p2 scopes of superposition for 0A~
200A；Short circuit current flow Is value ranges are 100A~300A；Tp value ranges are 0ms~3.5ms；Thd value ranges are 0ms
~5ms；Thf value ranges are 1ms~5ms；The value range of Tb is 0~1ms；The value range of Tsd and Tad is 0~2ms；
The frequency F of high-frequency pulse current is at least in more than 1kHz, more preferably greater than 20kHz；The selection of two sections of rates of rise K1, K2 is general
Meet K1>K2, and be adjusted according to different welding parameters, ensure that the arc stage in next cycle makes weldering before arriving
It connects principal current and rises to Ip1.
The frequency of high-frequency pulse current and the switching frequency of Q4 are equal；
Electric current is just maintained at Ip1 by step a expressions since arc stage, and step b is meant since arc stage
Principal current exponential damping is welded to arcing background current Iab after counting delay Tp and short-circuit stage is waited to start；
It zero is exactly represent can be without that those, which can be, you can with the meaning not postponed.
It is another object of the present invention to propose a kind of short-circuiting transfer soldering system, to realize above-mentioned welding method, this
System uses the method for alternate wire-feed, while can detect the short circuit in welding process or arcing state, and exports suitably
Welding current.In addition, in arc stage, the high-frequency pulse current more than 20kHZ can also be superimposed.
Short-circuiting transfer soldering system proposed by the present invention is by main circuit part 1,3 three parts of control circuit 2 and wire feed system
It forms.
Main circuit part 1 includes the principal current output par, c 11 of output short-circuit graded seal current waveform and the high frequency of superposition
The high-frequency pulse current output par, c 12 of pulse current, the two parts are connected in parallel by source of welding current output terminal 13.
Three-phase main-frequency 380V control sources to first pass through after principal current output par, c 11 input rectification circuit carry out rectification and
Filtering obtains direct current, and the output of rectification circuit is connected with the input of inverter circuit；
Direct current after rectification is carried out inversion by inverter circuit, obtains the alternating current of higher frequency, the output of inverter circuit
It is connected with the primary side of intermediate-frequency transformer；
The electric energy of primary side is transmitted to secondary, the input of the secondary and output rectification circuit of intermediate-frequency transformer by intermediate-frequency transformer
End is connected；
Output rectification circuit is responsible for the AC rectification that intermediate-frequency transformer is coupled to come into direct current, output rectification circuit
Output terminal be connected with filter inductance, filter inductance is responsible for stablizing output current.
Three-phase main-frequency 380V control sources can first give DC constant current power supply to provide electricity to after high-frequency pulse current output par, c 12
Source, the effect of DC constant current power supply is continual and steady output high-frequency pulse current peak I p2；
The output of DC constant current power supply is connected to the input terminal of current switch circuit, and current switch circuit exports DC constant current power supply
Electric current carry out high frequency switching after as arc stage be superimposed high-frequency pulse current.
DC constant current power supply in high-frequency pulse current output par, c 12 can be used can realize appointing for the function in the prior art
One circuit structure.
Control circuit 2 includes single-chip computer control system, and wire feed system controls and interface circuit, human-computer interaction interface, and first
Driving circuit, switch driving circuit and the second driving circuit.
Single-chip computer control system can receive and handle the weldingvoltage U in welding process, welding current I, filter inductance
The feedback signal of the high-frequency pulse current peak I of principal current and the DC constant current power supply output of output.By handling these signals,
Single-chip computer control system may determine that short circuit or arcing state and realize following functions：
Single-chip computer control system is connected with the first driving circuit, inputs a pwm signal to the first driving circuit, first drives
Dynamic circuit is connected with inverter circuit, controls the conducting of the switching tube in inverter circuit and turns off so as to adjust principal current output section
Divide 11 electric current output；
Single-chip computer control system is also connected with the second driving circuit, give the second driving circuit input a pwm signal, first
Driving circuit is connected with DC constant current power supply, controls the conducting and shut-off of the switching tube in DC constant current power supply, permanent so as to adjust direct current
The high-frequency pulse current peak I p2 of stream source output；
Single-chip computer control system is also connected with switch driving circuit, and a pwm signal, switching are inputted to switch driving circuit
Driving circuit is connected with current switch circuit, the conducting and shut-off of the switching tube in switching circuit is controlled, so as to control high frequency arteries and veins
Rush the frequency of electric current and superposition time Thf；
Single-chip computer control system is also connected with human-computer interaction interface, you can is welded with the setting for receiving human-computer interaction interface transmission
Actual welding parameter can be sent to human-computer interaction interface again by connecing parameter, and human-computer interaction interface can be used for adjusting welding parameter.
Single-chip computer control system is also connected with wire feed system control and interface circuit, to wire feed system control and interface circuit
Wire-feed motor switch and wire feed rate signal in input welding process, wire feed system control and interface circuit and 3 phase of wire feed system
Even, the wire feed servomotor in wire feed system 3 is controlled.
Description of the drawings
Fig. 1 short circuiting arc welding method flow diagrams
Fig. 2 short-circuiting transfer soldering system schematic diagrames
A kind of short-circuiting transfer soldering system concrete application examples of Fig. 3
A kind of short circuiting arc welding method application example oscillograms of Fig. 4
Specific embodiment
It is illustrated below by application example come the specific embodiment to the present invention.
The short-circuiting transfer soldering system and short circuit transition welding of the concrete application example of the present invention as shown in Figure 3 and Figure 4
Shown in welding wave.
The welding system that the example uses includes principal current out-put supply, high-frequency pulse current out-put supply, the source of welding current
Five output, control circuit and wire feed system parts, wherein principal current out-put supply and high-frequency pulse current out-put supply is defeated
Go out and be connected by source of welding current output, collectively form the main circuit of the welding system and be responsible for power output.
The rectification circuit of principal current out-put supply is adopted to be made of four diodes and filter capacitor, four diode available sets
It is replaced into good power rectifier bridge, when input is three-phase main-frequency alternating current, three-phase commutation bridge may be employed.Inversion
Circuit is using bridge architecture, and capacitance C1, C2 in Fig. 4, diode D1, D2, IGBT Q1, Q2 constitute a semibridge system
Direct current after rectification can be become the alternating current of higher frequency by two IGBT alternate conductions, in addition by inverter circuit
Two IGBT also respectively parallel connection buffer circuit to play a protective role when it is turned off.Alternating current after inversion passes through transformer T
Primary side decompression be coupled to secondary, there are one centre cap, centre cap cooperation diode D3, D4 are realized the secondary of transformer
Rectification function；Not after over commutation output or one interruption voltage, so finally must filtered inductance L rectifications it is defeated
Go out a continuous electric current, the electric current of output is related with the average value of back-lash voltage, i.e., when input voltage and transformer voltage ratio
In the case of fixed, the electric current output of principal current out-put supply is related with the conducting dutycycle of two IGBT；In addition filter inductance
For output terminal with power supply there are one the circuit that switching tube Q3 and power resistor R are composed in parallel, the purpose of this circuit is to improve
The dynamic property of power supply output, Q3 is in the conduction state during normal work, and Q3 is closed when electric current needs rapid decline
Disconnected, the energy in inductance is discharged rapidly by resistance R to be achieved the purpose that quickly to reduce electric current.
For DC constant current power supply in high-frequency pulse current out-put supply using chopped mode structure, control electricity is given in exporting for constant-current source
DsPIC30F6011 monolithic microcomputer kernels control circuit in road sends feedback, and is compared with the current value set, compares
The error signal generated afterwards be used for generate pwm control signal, afterwards again by driving circuit control constant-current source in switching tube just
A current ration set can be exported, this definite value is exactly the amplitude Ip2 of the high-frequency pulse current exported afterwards.
IGBT Q4 and Q5 constitute a current switch circuit, this similary two IGBT buffer circuits all in parallel.By stable electricity
The method that stream switches to high-frequency pulse current is the conducting and shut-off by Q4, when Q4 is turned on, DC constant current power supply output
By Q4 short circuits, electric current is flowed through from Q4；DC constant current power supply is output to the source of welding current output terminal when Q4 is turned off.The effect of Q5
It is to turn off to eliminate the afterflow of stray inductance in circuit when Q4 is turned on to act on, Q5 can be tended to remain on when Q4 is turned off.Have
Above description understands that the frequency of high-frequency pulse current is determined by the switching frequency of Q4, and makes Q4 is constantly on can stop
Overlapped high-frequency pulse current.
Principal current out-put supply and high-frequency pulse current out-put supply have connect two two respectively in source of welding current output par, c
Pole pipe D5, D6 is connected in parallel afterwards, and the effect of two diodes is to prevent two power supplys from interacting.After two power sources in parallel
It is connected on welding gun and base material, and is fed back to by current sensor and voltage sensor to gather welding data
DsPIC30F6011 monolithic microcomputer kernel control circuits.Wherein welding gun is played to the effect of welding wire conduction, also acts as guiding wire feed
Effect, so welding gun had both belonged to source of welding current output par, c and has fallen within wire feed system part.
It is related to wire feed that wire feed system includes wire-feed motor, welding gun, wire leading pipe, push-and-pull motor, welding wire length detection device etc.
Component.Motor and push-and-pull motor in wire-feed motor use servomotor, so needing wire feeding motor driving.Wire feed system
Operation principle is to push and pull the wire feed rate that motor is responsible in adjustment welding process, and the servomotor in wire-feed motor is responsible for cooperation and is pushed away
Draw welding machine supplement welding wire.Because in the welding process, in addition to welding wire and wire leading pipe other devices be all it is fixed, because
This welding wire length detection device can detect welding wire length according to the angle of welding wire, so as to judge whether to require supplementation with welding wire, and
Wire-feed motor is controlled on this basis.
Control circuit part is using dsPIC30F6011 microcontrollers as core data processing chip, and according to the work(to be realized
It can additional many circuits.DsPIC30F6011 monolithic microcomputer kernels control circuit includes feedback processing, data operation, data hair
Send with the functions such as data receiver, by that can be realized including the welding method that this patent is mentioned to mcu programming
Welding procedure.The core control circuit can send pwm signal to each road driving circuit to reach the mesh of adjustment electric current output
, it can also be carried out data transmission by CAN communication bus between wire-feeding control circuit and welding machine control panel.
This example is using the short circuiting arc welding method of cooperation push-and-pull silk, i.e. Va>0, Vs<0, after reaching short-circuit stage
Droplet transfer is aided in by pumpback welding wire.Specific welding waveform is as shown in Figure 4.Below with arc stage initially as
The starting in one cycle droplet transfer illustrates：
Illustrate that arc stage starts when weldingvoltage U increases suddenly, start to perform arcing program.At this time in order to enhance electricity
The stability of arc should go up to weld principal current to Ip1 immediately.Push-and-pull motor should be sent into welding wire, but root after arc stage arrives
It can postpone Tsd according to the response performance of specific welding procedure or wire feed system.After postponing Thd since the arcing, start to fold
High frequency pulse electric current, the duration T hf of high-frequency pulse current superposition can choose according to specific welding demand, generally
Between 1ms~5ms.So the peak value that arc stage welding current I highests can reach is Ip1+Ip2.Arcing later stage, electricity
Arc has been able to stabilization and burns, it is possible to which electric current is continuously decreased reduction heat input.
When weldingvoltage U reduces suddenly, illustrate short circuit occurs at this time, start to perform short-circuit program.Short circuit occurs
Welding current is reduced to background current Ib immediately afterwards, because molten drop rigid connection contacts molten bath at this time, the contact area between them
Very little, if energy input is excessive easily to occur quick-fried stopping pregnancy life splashing.After Tb, start to promote electric current extremely with larger slope
Is promotes electric current with smaller slope again afterwards, and ultimate current does not continue to rise after reaching Isp, keeps constant current, this example
Middle Isp=Ip1.When detecting that the droplet transfer soon completes, electric current can be temporarily reduced to again Ib, it so can be to prevent
Only foot bridge is quick-fried disconnected, and electric current rise is returned to Is again after arc stage just starts.The side for the prediction arcing that this example uses
Method is：Acquisition electric current and voltage signal are first passed through to calculate the resistance characteristic of liquid bridge, further according to resistance characteristic and its changing rule
To judge the shrinkage degree of liquid bridge to predict the end of droplet transfer.It, can be by master when Ib is lowered the current to twice
The Q3 shut-offs of electric current out-put supply, accelerate response speed of the source of welding current to electric current dropping signal.When the droplet transfer,
It should make push-and-pull motor pumpback welding wire, likewise, Tad can be postponed according to the response performance of welding procedure or wire feed system.
What described above is the application example of the present invention, can also be done for the application mode of the present invention
Variation, such as principal current out-put supply uses full-bridge or other kinds of circuit structure；Short-circuit stage is simply slowed down or is stopped
Only wire feed rather than pumpback welding wire；DsPIC30F6011 etc. is replaced with other microcontrollers.As long as the system used and welding side
Method is consistent in content of the present invention, is regarded as the scope of the present invention.
Claims (7)
- A kind of 1. short circuiting arc welding method, which is characterized in that comprise the following steps：A) after arc stage starts, welding principal current is made to keep Ip1；B) postpone Tp, weld principal current exponential damping afterwards and to arcing background current Iab and short-circuit stage is waited to start；C) after short-circuit stage starts, welding principal current first is promoted to Is to rise slope K 1；D) welding principal current, short-circuit stage electric current not more than Isp, if short-circuit rank after reaching Isp are promoted to rise slope K 2 Section does not terminate also, keeps constant current；E) after detecting that next cycle arc stage starts, step a is repeated；It is characterized in that, during step b is carried out, overlapped high-frequency pulse current, specific method is：Arc stage starts Afterwards, overlapped high-frequency pulse current, when a length of Thf of overlapped high-frequency pulse current are started immediately or after delay Thd, amplitude is Ip2, frequency F；The value range for the arcing background current Iab being previously mentioned is 15A<Iab<250A；Background current Ib scopes are 20A<Ib< 100A；Arcing peak I p1 scopes are 150A<Ip1<450A；The value range of short circuit current flow maximum Isp is 350A<Isp< 650A；The high-frequency pulse current peak I p2 scopes of superposition are 0A<Ip<200A；Short circuit current flow Is value ranges are 100A<Is< 300A；Tp value ranges are 0ms<Tp<3.5ms；Thd value ranges are 0ms<Thd<3.5ms；Thf value ranges are 1ms<Thf <10ms；The value range of Tsd is 0<Tsd<2ms；Value range with Tad is 0<Tad<2ms；The frequency F of high-frequency pulse current At least in more than 1kHz；Two sections of rate of rise 80A/ms<K1<120A/ms, 30A/ms<K2<90A/ms, and ensure K1>K2.
- 2. welding method according to claim 1, which is characterized in that when carrying out step a to b, postpone since the arcing After Tsd, wire-feed motor is sent into welding wire with arcing wire feed rate Va；When carrying out step c to d, after postponing Tad since the short circuit, with Short-circuit wire feed rate Vs is sent into or pumpback welding wire；Va scopes are 2m/min~30m/min, and Vs scopes are -30m/min~30m/ Min negative values represent pumpback welding wire.
- 3. welding method according to claim 1 or 2, which is characterized in that short-circuit stage has been just during step a to b After arrival, reduce welding principal current and to Ib and continue for some time Tb；The value range of Tb is 0~1ms.
- 4. a kind of short-circuiting transfer soldering system, which is characterized in that including main circuit part (1), control circuit (2) and wire feed system (3) three parts are formed；The main circuit part (1) includes：Principal current output par, c (11), high-frequency pulse current output par, c (12) and welding Power output end (13)；Principal current output par, c (11) and high-frequency pulse current output par, c (12) export respectively with the source of welding current (13) is held to be connected；Control circuit (2) is connected with the source of welding current output terminal (13) in main circuit part (1), receives weldingvoltage U and welding The feedback of electric current I；Control circuit (2) is also connected with the principal current output par, c (11) in main circuit part (1), controls short-circuit mistake Cross the principal current of welding；Control circuit (2) is also connected with the high-frequency pulse current output par, c (12) in main circuit part (1), Control the frequency of high-frequency pulse current peak I p2 and high-frequency pulse current；Control circuit (2) is connected with wire feed system (3), control wire feed rate V.
- 5. welding system according to claim 4, which is characterized in that principal current output par, c (11) includes sequentially connected Input rectification circuit (1101), inverter circuit (1102), intermediate-frequency transformer (1103), output rectification (1104), filter inductance (1105)。
- 6. welding system according to claim 4 or 5, which is characterized in that high-frequency pulse current output par, c (12) includes Sequentially connected DC constant current power supply (1201) and current switch circuit (1202).
- 7. according to the welding system described in claim 4 to 6 any one, which is characterized in that control circuit (2) includes microcontroller Control system (21), wire feed system control and interface circuit (22), human-computer interaction interface (23), are cut the first driving circuit (24) Change driving circuit (25), the second driving circuit (26)；Wire feed system controls and interface circuit (22) is connected with wire feed system (3), single-chip computer control system (21) and wire feed system Control and interface circuit (22) are connected, so as to fulfill the purpose of wire feed rate V is controlled in the welding process；Single-chip computer control system (21) is also connected with human-computer interaction interface (23), for changing the reality of welding parameter and monitoring welding Border data；Single-chip computer control system (21) is also connected with the first driving circuit (24), the first driving circuit (24) and inverter circuit (1102) it is connected, the conducting and shut-off of the switching tube in the first driving circuit (24) is controlled by sending pwm signal, as long as changing Become the conducting dutycycle of pwm signal, just adjust the electric current output of principal current output par, c (11)；Single-chip computer control system (21) is also connected with switch driving circuit (25), switch driving circuit (25) and current switch circuit (1202) it is connected, the switching frequency of switching tube in current switch circuit (1202) is controlled to change the frequency of high-frequency pulse current；Single-chip computer control system (21) is also connected with the second driving circuit (26), the second driving circuit (26) and DC constant current power supply (1201) it is connected, DC constant current power supply (1201) is adjusted by controlling the conducting dutycycle of switching tube in DC constant current power supply (1201) Output Ip1；Output of the single-chip computer control system (21) also with DC constant current power supply (1201) is connected, for receiving processing high-frequency pulse current The feedback of peak I p2；Output of the single-chip computer control system (21) also with filter inductance (1105) is connected, for receiving processing principal current feedback；Single-chip computer control system (21) is also connected with source of welding current output terminal (13), for receiving processing weldingvoltage U and welding The feedback of electric current I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393148.6A CN108057942A (en) | 2017-12-21 | 2017-12-21 | A kind of short circuiting arc welding method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393148.6A CN108057942A (en) | 2017-12-21 | 2017-12-21 | A kind of short circuiting arc welding method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108057942A true CN108057942A (en) | 2018-05-22 |
Family
ID=62139607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711393148.6A Pending CN108057942A (en) | 2017-12-21 | 2017-12-21 | A kind of short circuiting arc welding method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108057942A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110842328A (en) * | 2019-11-27 | 2020-02-28 | 唐山松下产业机器有限公司 | Pulse welding method, pulse welding system and welding machine |
| CN110893501A (en) * | 2018-09-12 | 2020-03-20 | 山东大学 | Pulse current and push-pull wire cooperative control method for wet welding molten drop transition |
| CN111215727A (en) * | 2019-12-02 | 2020-06-02 | 唐山松下产业机器有限公司 | Method and device for detecting welding short circuit arcing |
| CN111531251A (en) * | 2020-05-23 | 2020-08-14 | 上海沪工焊接集团股份有限公司 | Arc welding power supply short circuit transition control method, system and device and storage medium thereof |
| CN112008196A (en) * | 2020-07-22 | 2020-12-01 | 武汉理工大学 | Composite pulse welding method, welding system, welding machine and application |
| CN113687131A (en) * | 2021-09-07 | 2021-11-23 | 成都卡诺普机器人技术股份有限公司 | Stability detection method for short circuit transition welding |
| CN114367720A (en) * | 2021-12-27 | 2022-04-19 | 唐山松下产业机器有限公司 | Control method and device for stabilizing molten pool based on direct current arc welding machine and storage medium |
| CN114406403A (en) * | 2021-12-20 | 2022-04-29 | 南京理工大学 | Method for stabilizing molten drop transition of high-nitrogen steel double-wire CMT welding |
| CN114641364A (en) * | 2019-11-04 | 2022-06-17 | 弗罗纽斯国际有限公司 | Method and apparatus for welding a weld |
| CN116117279A (en) * | 2022-12-30 | 2023-05-16 | 深圳市麦格米特焊接技术有限公司 | Consumable electrode gas shielded welding system, control method thereof, controller and medium |
| CN116213888A (en) * | 2022-12-30 | 2023-06-06 | 深圳市麦格米特焊接技术有限公司 | Consumable electrode gas shielded welding system, control method thereof, controller and medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362755A (en) * | 1976-11-17 | 1978-06-05 | Hitachi Ltd | Pulse arc welding method |
| US4866247A (en) * | 1986-12-11 | 1989-09-12 | The Lincoln Electric Company | Apparatus and method of short circuiting arc welding |
| JPH01299769A (en) * | 1988-05-24 | 1989-12-04 | Sansha Electric Mfg Co Ltd | Output control method for gas shielded arc welding power source |
| CN201333584Y (en) * | 2008-12-12 | 2009-10-28 | 北京工业大学 | Short circuit transfer welding system |
| CN103008835A (en) * | 2012-11-29 | 2013-04-03 | 北京工业大学 | Short circuit transition welding system of coupling arcs and control method thereof |
| CN103372713A (en) * | 2013-02-20 | 2013-10-30 | 天津工业大学 | Aero-engine blade damage repair method |
| CN105880802A (en) * | 2016-05-10 | 2016-08-24 | 北京航空航天大学 | Ultrasonic-frequency composite pulse GMAW welding power source device |
-
2017
- 2017-12-21 CN CN201711393148.6A patent/CN108057942A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362755A (en) * | 1976-11-17 | 1978-06-05 | Hitachi Ltd | Pulse arc welding method |
| US4866247A (en) * | 1986-12-11 | 1989-09-12 | The Lincoln Electric Company | Apparatus and method of short circuiting arc welding |
| JPH01299769A (en) * | 1988-05-24 | 1989-12-04 | Sansha Electric Mfg Co Ltd | Output control method for gas shielded arc welding power source |
| CN201333584Y (en) * | 2008-12-12 | 2009-10-28 | 北京工业大学 | Short circuit transfer welding system |
| CN103008835A (en) * | 2012-11-29 | 2013-04-03 | 北京工业大学 | Short circuit transition welding system of coupling arcs and control method thereof |
| CN103372713A (en) * | 2013-02-20 | 2013-10-30 | 天津工业大学 | Aero-engine blade damage repair method |
| CN105880802A (en) * | 2016-05-10 | 2016-08-24 | 北京航空航天大学 | Ultrasonic-frequency composite pulse GMAW welding power source device |
Non-Patent Citations (1)
| Title |
|---|
| 闫恒宇: "推拉送丝短路过渡焊接设备及工艺", 《第二十次全国焊接学术会议论文集》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893501A (en) * | 2018-09-12 | 2020-03-20 | 山东大学 | Pulse current and push-pull wire cooperative control method for wet welding molten drop transition |
| CN110893501B (en) * | 2018-09-12 | 2021-09-28 | 山东大学 | Pulse current and push-pull wire cooperative control method for wet welding molten drop transition |
| CN114641364A (en) * | 2019-11-04 | 2022-06-17 | 弗罗纽斯国际有限公司 | Method and apparatus for welding a weld |
| CN110842328A (en) * | 2019-11-27 | 2020-02-28 | 唐山松下产业机器有限公司 | Pulse welding method, pulse welding system and welding machine |
| CN110842328B (en) * | 2019-11-27 | 2021-12-03 | 唐山松下产业机器有限公司 | Pulse welding method, pulse welding system and welding machine |
| CN111215727B (en) * | 2019-12-02 | 2022-05-13 | 唐山松下产业机器有限公司 | Method and device for detecting welding short circuit arcing |
| CN111215727A (en) * | 2019-12-02 | 2020-06-02 | 唐山松下产业机器有限公司 | Method and device for detecting welding short circuit arcing |
| CN111531251A (en) * | 2020-05-23 | 2020-08-14 | 上海沪工焊接集团股份有限公司 | Arc welding power supply short circuit transition control method, system and device and storage medium thereof |
| CN111531251B (en) * | 2020-05-23 | 2022-09-27 | 上海沪工焊接集团股份有限公司 | Arc welding power supply short circuit transition control method, system and device and storage medium thereof |
| CN112008196A (en) * | 2020-07-22 | 2020-12-01 | 武汉理工大学 | Composite pulse welding method, welding system, welding machine and application |
| CN113687131A (en) * | 2021-09-07 | 2021-11-23 | 成都卡诺普机器人技术股份有限公司 | Stability detection method for short circuit transition welding |
| CN114406403A (en) * | 2021-12-20 | 2022-04-29 | 南京理工大学 | Method for stabilizing molten drop transition of high-nitrogen steel double-wire CMT welding |
| CN114406403B (en) * | 2021-12-20 | 2023-10-13 | 南京理工大学 | Method for stabilizing high-nitrogen steel double-wire CMT welding molten drop transition |
| CN114367720A (en) * | 2021-12-27 | 2022-04-19 | 唐山松下产业机器有限公司 | Control method and device for stabilizing molten pool based on direct current arc welding machine and storage medium |
| CN116117279A (en) * | 2022-12-30 | 2023-05-16 | 深圳市麦格米特焊接技术有限公司 | Consumable electrode gas shielded welding system, control method thereof, controller and medium |
| CN116213888A (en) * | 2022-12-30 | 2023-06-06 | 深圳市麦格米特焊接技术有限公司 | Consumable electrode gas shielded welding system, control method thereof, controller and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108057942A (en) | A kind of short circuiting arc welding method and system | |
| CN1203953C (en) | Short-circuit arc welding machine and method for controlling one | |
| KR100607980B1 (en) | Short circuit arc welder and method of controlling same | |
| CN200951483Y (en) | Self-adaption, impulse, contravariant carbon dioxide fusion arc welding machine | |
| CN103692056B (en) | Multifunctional digital ripple control arc welding inverter | |
| CN105880802A (en) | Ultrasonic-frequency composite pulse GMAW welding power source device | |
| CN110421237B (en) | LLC-based double-wire pulse MIG welding power supply system and control method | |
| CN103962686B (en) | Consumable electrode arc welding molten drop necking down detection method | |
| CN105414728B (en) | A kind of air plasma cutter single-sensor arc ignition circuit and its control method | |
| CN101352776B (en) | Variable polarity welding power supply secondary inverter circuit and control method thereof | |
| CN101513689B (en) | Short circuit determination method for electrode fused arc welding | |
| CN204160022U (en) | A kind of consumable electrode arc welding control device | |
| CN103418892B (en) | A kind of welding supply and control method that there is energy and keep loop | |
| CN108637434A (en) | Gas-shielded welder intelligence low spatter FASW control systems and method | |
| CN104209631B (en) | A kind of consumable electrode arc welding control device | |
| CN103433608B (en) | A kind of modularization chopped mode plasma cutting power supply control method and device | |
| CN203091930U (en) | Welding machine with short circuit electric arc molten drop control function | |
| CN203933436U (en) | A kind of power driving circuit of single inversion large power stud welding machine | |
| CN107538106A (en) | Welding machine arc-maintaining device | |
| CN105149732A (en) | Consumable electrode welder and welding method thereof | |
| CN109317804A (en) | In conjunction with the medium-frequency inverting resistance welding machine control device and control method of PLC | |
| CN103269822A (en) | Method to control an arc welding system to reduce spatter | |
| CN203791803U (en) | Inverter arc welding power supply employing IGBT for secondary switching control | |
| CN202398926U (en) | Control device for digital welding machine with fine welding waveform | |
| CN105728901B (en) | One kind is used for AC-DC argon arc welding machine secondary inverting drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180522 |