CN105710504B - A kind of pulsation welding device and its main weldering termination process control method - Google Patents
A kind of pulsation welding device and its main weldering termination process control method Download PDFInfo
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- CN105710504B CN105710504B CN201610141419.8A CN201610141419A CN105710504B CN 105710504 B CN105710504 B CN 105710504B CN 201610141419 A CN201610141419 A CN 201610141419A CN 105710504 B CN105710504 B CN 105710504B
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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
- B23K9/09—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
- B23K9/092—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits characterised by the shape of the pulses produced
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Abstract
The present invention provides a kind of pulsation welding device and its main weldering termination process control method, belongs to welding field.The pulsation welding device includes：Wire feeder, controller, and voltage detecting circuit, voltage detecting circuit detection actual welding voltage U.Controller includes：Instruction current acquiring unit, short-circuit voltage a reference value acquiring unit.Short-circuit voltage limit value acquiring unit, it is used for according to short-circuit voltage a reference value Us_std, instruction current In, and short-circuit voltage a reference value Us_std set in advance, instruction current In and short-circuit voltage limit value Us corresponding relation Rs, obtain short-circuit voltage limit value Us, wherein, short-circuit voltage limit value Us increases with short-circuit voltage a reference value Us_std and instruction current In increase.And short-circuit identifying unit, it is used to judge whether actual welding voltage U is less than short-circuit voltage limit value Us, if it is, being determined as short circuit, if it is not, then being determined as not short-circuit.
Description
[technical field]
The present invention relates to welding technology field, more particularly to a kind of pulsation welding device and its main weldering termination process controlling party
Method.
[background technology]
With the development of electric arc welding technology, for the requirement also more and more higher of pulse welding performance, during normal weld
Arc stability, non-jitter, short circuiting transfer is smooth, splashes small, not jackscrew etc..When carrying out operation using pulse welding mode,
Main weldering termination process, when voltage is higher, arc length can be elongated, will not produce short circuit, and welding is stable, but when user scene needs drop
When low-voltage is welded, the arc length of electric arc can shorten, and short circuit can unavoidably occur, and short-circuit processing directly influences the size of splashing
With the stability of electric arc.
The method of the judgement short circuit of the main weldering termination process of pulsation welding device of the prior art is as shown in figure 11, including：
Instruction current obtaining step S91.According to preset current Io set in advance, the wire feed rate v of wire feeder is obtained,
And calculate instruction current In.Then welded according to instruction current In.
Short-circuit voltage a reference value obtaining step S92.According to wire feed rate v, short-circuit voltage a reference value Us_std is obtained.
Short-circuit determination step S93.Judge whether actual welding voltage U is less than short-circuit voltage a reference value Us_std, if it is,
Then it is determined as short circuit, if it is not, then being determined as not short-circuit.If not short-circuit, proceed normal weld processing, i.e. continue
Welded according to instruction current In.If short-circuit, short-circuit processing is carried out.Short circuit processing comprises the following steps.
Burning voltage a reference value obtaining step S94.According to wire feed rate v, burning voltage a reference value Ua_std is obtained.
Instruction current ascending step S95.When being determined as short circuit, increase instruction electric current In.
Arcing determination step S96.Whether the actual welding voltage U after decision instruction electric current In rises is more than burning voltage base
Quasi- value Ua_std.If it is, being determined as arcing, if it is not, then being determined as non-arcing.If non-arcing, proceed to refer to
Make electric current ascending step.If arcing, normal weld processing is carried out.
But, the pulsation welding device of prior art is only capable of judging short circuit and arcing in the pulse base value stage.Such as Figure 12
Shown, shown in solid in the voltage such as Figure 12 of reality output during normal weld, when occurring short circuit, the voltage of reality output is such as
Shown in dotted line in Figure 12.Obviously, only when occurring short circuit in the base value stage, the voltage of reality output can just be less than short-circuit voltage
A reference value Us_std.That is, only just it can be determined out when occurring short circuit in the base value stage.Even if occurring in peak phase short
Road, the voltage of reality output is also above short-circuit voltage a reference value Us_std.That is, even if occurring short circuit in peak phase, can not yet
Judge.Equally, even if occurring arcing in peak phase, it can not also judge.
Therefore, the pulsation welding device of prior art mostly just judges short circuit and arcing in the pulse base value stage, other
Stage is without judging.But the probability that short circuit occurs for other stages is very big, if without processing, can be produced to welding performance
Harmful effect, the pulse period is uneven, arc stability reduction, can produce big splashing etc..
[content of the invention]
[technical problem]
It is contemplated that for the problems of the prior art, there is provided a kind of pulsation welding device and its main Control Welding Process
Method.
[solution]
The pulsation welding device that the present invention is provided includes：Wire feeder, controller, and voltage detecting circuit, voltage inspection
Slowdown monitoring circuit detection actual welding voltage U.Controller includes：Instruction current acquiring unit, it is used for according to set in advance preset
Electric current Io, obtains the wire feed rate v of wire feeder, and calculates instruction current In.Short-circuit voltage a reference value acquiring unit, its
For according to wire feed rate v, obtaining short-circuit voltage a reference value Us_std.Short-circuit voltage limit value acquiring unit, it is used for according to short
Road voltage reference value Us_std, instruction current In, and short-circuit voltage a reference value Us_std set in advance, instruction current In and
Short-circuit voltage limit value Us corresponding relation Rs, obtains short-circuit voltage limit value Us.Wherein, short-circuit voltage limit value Us is with short-circuit voltage
A reference value Us_std and instruction current In increase and increase.And short-circuit identifying unit, it is used to judge actual welding voltage U
Whether short-circuit voltage limit value Us is less than, if it is, being determined as short circuit, if it is not, then being determined as not short-circuit.
The present invention also provides a kind of main weldering termination process control method of pulsation welding device, and pulsation welding device includes：Send
Silk mechanism, controller, and voltage detecting circuit, voltage detecting circuit detection actual welding voltage U.Control method includes：Refer to
Electric current obtaining step is made, according to preset current Io set in advance, the wire feed rate v of wire feeder is obtained, and calculate finger
Make electric current In.Short-circuit voltage a reference value obtaining step, according to wire feed rate v, obtains short-circuit voltage a reference value Us_std.Short-circuit electricity
Limit value obtaining step is pressed, according to short-circuit voltage a reference value Us_std, instruction current In, and short-circuit voltage benchmark set in advance
Value Us_std, instruction current In and short-circuit voltage limit value Us corresponding relation Rs, obtain short-circuit voltage limit value Us.Wherein, it is short-circuit
Voltage limits Us increases with short-circuit voltage a reference value Us_std and instruction current In increase.And short-circuit determination step,
Judge whether actual welding voltage U is less than short-circuit voltage limit value Us, if it is, being determined as short circuit, if it is not, then being determined as not
Short circuit.
The present invention also provides a kind of pulsation welding device, including：Wire feeder, controller, and current detection circuit, electricity
Current detection circuit detection actual welding electric current I.Controller includes：Instruction current acquiring unit, it is used for according to set in advance
Preset current Io, obtains the wire feed rate v of wire feeder, and calculates instruction current In.Short circuit current flow deviation obtains single
Member, it is used to, according to instruction current In and actual welding electric current I, obtain short circuit current flow deviation Δ Is.Short-circuit identifying unit, its
For judging whether short circuit current flow deviation Δ Is is more than short circuit current flow threshold value Is set in advance, if it is, being determined as short
Road, if it is not, then being determined as not short-circuit.
The present invention also provides a kind of main weldering termination process control method of pulsation welding device, and pulsation welding device includes：Send
Silk mechanism, controller, and current detection circuit, current detection circuit detection actual welding electric current I.Control method includes：Refer to
Electric current obtaining step is made, according to preset current Io set in advance, the wire feed rate v of wire feeder is obtained, and calculate finger
Make electric current In.Short circuit current flow deviation obtaining step, according to instruction current In set in advance and actual welding electric current I, is obtained
Short circuit current flow deviation Δ Is.And short-circuit determination step, judge whether short circuit current flow deviation Δ Is is more than set in advance
Short circuit current flow threshold value Is, if it is, being determined as short circuit, if it is not, then being determined as not short-circuit.
[invention beneficial effect]
By the pulsation welding device and its main weldering termination process control method of the present invention, splashing can be reduced, electric arc is improved
Stability.
[brief description of the drawings]
Fig. 1 is the generalized hardware architecture figure of pulsation welding device；
Fig. 2 is the structured flowchart of the controller of the pulsation welding device of first embodiment of the invention；
Fig. 3 is the main weldering termination process control method flow chart of the pulsation welding device of first embodiment of the invention；
Fig. 4 is the structured flowchart of the controller of the pulsation welding device of second embodiment of the invention；
Fig. 5 is the main weldering termination process control method flow chart of the pulsation welding device of second embodiment of the invention；
Fig. 6 is the electric current and voltage of the reality output of the pulsation welding device of first embodiment of the invention and second embodiment
Curve map；
Fig. 7 is the structured flowchart of the controller of the pulsation welding device of third embodiment of the invention；
Fig. 8 is the main weldering termination process control method flow chart of the pulsation welding device of third embodiment of the invention；
Fig. 9 is the structured flowchart of the controller of the pulsation welding device of fourth embodiment of the invention；
Figure 10 is the flow chart of the main weldering termination process control method of the pulsation welding device of fourth embodiment of the invention；
Figure 11 is the flow chart of the main weldering termination process control method of the pulsation welding device of prior art；And
Figure 12 is the electric current of the reality output of the pulsation welding device of prior art and the curve map of voltage.
[embodiment]
The core concept of the present invention is, according to short-circuit voltage a reference value Us_std, instruction current In, and set in advance
Corresponding relation Rs, obtains short-circuit voltage limit value Us, then judges whether actual welding voltage U is less than short-circuit voltage limit value Us, so that
Determine whether short circuit.In short circuit, according to burning voltage a reference value Ua_std, instruction current In, and correspondence set in advance
Relation Ra, obtains burning voltage limit value Ua, then judges whether actual welding voltage U is more than burning voltage limit value Ua, so as to judge
Whether arcing.
Fig. 1 shows the generalized hardware architecture figure of pulsation welding device, and it includes：The source of welding current and wire feeder.Welding
Power supply includes：Controller, and RAM, FLASH, voltage detecting circuit and the current detection circuit connected respectively with controller.Electricity
Pressure detection electric circuit inspection actual welding voltage U, current detection circuit detection actual welding electric current I.Controller is also and wire feeder
Connection.Alternatively, it is also possible to which using the controller for being built-in with RAM and ROM, so there is no need to external RAM and FLASH.On
State hardware configuration and belong to prior art, therefore be not described in detail.
The embodiment to the present invention is illustrated below in conjunction with the accompanying drawings.
[first embodiment]
Improvement of the present invention mainly to welding power source internal software program.The arteries and veins of first embodiment of the invention is described below
Rush the software configuration of welder.The software section of the pulsation welding device of first embodiment of the invention is run by controller
's.
As shown in Fig. 2 controller includes：Instruction current acquiring unit, it is used for according to preset current Io set in advance,
The wire feed rate v of wire feeder is obtained, and calculates instruction current In；Short-circuit voltage a reference value acquiring unit, it is used for root
According to wire feed rate v, short-circuit voltage a reference value Us_std is obtained；Short-circuit voltage limit value acquiring unit, it is used for according to short-circuit voltage
A reference value Us_std, instruction current In, and short-circuit voltage a reference value Us_std set in advance, instruction current In and short circuit electricity
Limit value Us corresponding relation Rs is pressed, short-circuit voltage limit value Us is obtained, wherein, short-circuit voltage limit value Us is with short-circuit voltage a reference value
Us_std and instruction current In increase and increase；And short-circuit identifying unit, it is used to judge actual welding voltage U (by electricity
Pressure detection electric circuit inspection) whether it is less than short-circuit voltage limit value Us, if it is, being determined as short circuit, if it is not, then being determined as not short
Road.
As the example of controller, according to actual needs, can using existing general dsp chip, MCU+DSP chips or
Person's MCU+PWM chips.Instruction current acquiring unit, short-circuit voltage a reference value acquiring unit, short-circuit voltage limit value acquiring unit with
And short-circuit identifying unit can run the program module stored in FLASH or ROM to realize by controller.Corresponding relation Rs
It can be stored in the ROM of controller, can also be stored in external memory, can also store beyond the clouds etc..
The main weldering termination process control method of the pulsation welding device of first embodiment of the invention is described referring next to Fig. 3.
The control method comprises the following steps：
Instruction current obtaining step S1.According to preset current Io set in advance, the wire feed rate v of wire feeder is obtained,
And calculate instruction current In.In the present embodiment, can by welding operator in welding before, welding panel on
Set preset current Io.Then, pulsation welding device can be corresponding with wire feed rate v according to the preset current Io prestored
Relation table, obtains wire feed rate v.And according to the formula prestored, calculate instruction current In.Instruction current In can be
One group of current value, it reflects each moment in a pulse period, expects the current value of pulsation welding device output.
Short-circuit voltage a reference value obtaining step S2.According to wire feed rate v, short-circuit voltage a reference value Us_std is obtained.Can be with
Short-circuit voltage a reference value Us_std is obtained using any known method.In the present embodiment, can be according to the public affairs prestored
Formula, calculates short-circuit voltage a reference value Us_std.
Short-circuit voltage limit value obtaining step S3.Set according to short-circuit voltage a reference value Us_std, instruction current In, and in advance
Fixed short-circuit voltage a reference value Us_std, instruction current In and short-circuit voltage limit value Us corresponding relation Rs, obtain short-circuit voltage
Limit value Us.Wherein, short-circuit voltage limit value Us increases with short-circuit voltage a reference value Us_std and instruction current In increase.
In the present embodiment, corresponding relation Rs is the formula prestored.
Short-circuit determination step S4.Judge whether actual welding voltage U is less than short-circuit voltage limit value Us.If it is, judging
For short circuit, if it is not, then being determined as not short-circuit.If not short-circuit, proceed normal weld processing.That is, continue according to finger
Electric current In is made to be welded.If short-circuit, short-circuit processing is carried out.
Short-circuit voltage limit value Us curve is shown in Fig. 6.From fig. 6 it can be seen that short-circuit voltage limit value Us is in peak value
Stage is higher, relatively low in the base value stage.Therefore, occurs short circuit even in peak phase, actual welding voltage U also can be less than short circuit
Voltage limits Us.So, occur short circuit even in peak phase, also can determine that out.
By above-mentioned control method, short circuit can be all judged exactly in peak phase and base value stage, so that according to being
No short circuit, carries out short-circuit processing or normal weld processing.Splashing can so be reduced, the stability of electric arc is improved.
[second embodiment]
The second embodiment of the present invention is described referring to Fig. 4 to Fig. 6.
The second embodiment of the present invention uses universal impulse welder as shown in Figure 1.Second embodiment of the invention
The software architecture of pulsation welding device and the pulsation welding device of first embodiment and control method are essentially identical, therefore for phase
With description is partly not repeated, the difference of the two is only described below.
Difference is that the pulsation welding device of second embodiment also includes：Burning voltage a reference value acquiring unit, its
For according to wire feed rate v, obtaining burning voltage a reference value Ua_std.Burning voltage limit value acquiring unit, it is used for according to combustion
Arc voltage a reference value Ua_std, instruction current In, and burning voltage a reference value Ua_std, instruction current In and burning voltage limit
Value Ua corresponding relation Ra, obtains burning voltage limit value Ua.Wherein, burning voltage limit value Ua is with burning voltage a reference value Ua_
Std and instruction current In increase and increase.Instruction current elevation unit, it is used to be determined as short circuit in short-circuit identifying unit
When, increase instruction electric current In.And arcing identifying unit, its actual welding voltage U being used for after decision instruction electric current In rises
Whether burning voltage limit value Ua is more than.If it is, being determined as arcing, if it is not, then being determined as non-arcing.
Burning voltage a reference value acquiring unit, burning voltage limit value acquiring unit, instruction current elevation unit and arcing
Identifying unit can run the program module stored in FLASH or ROM to realize by controller.Corresponding relation Ra can be deposited
Storage can also be stored in external memory in the ROM of controller, can also be stored beyond the clouds etc..
Described referring next to Fig. 5 second embodiment of the invention pulsation welding device main weldering termination process control method with
The difference of first embodiment.The control method is further comprising the steps of after step s4：
Burning voltage a reference value obtaining step S5.According to wire feed rate v, burning voltage a reference value Ua_std is obtained.Can be with
Burning voltage a reference value Ua_std is obtained using any known method.In the present embodiment, can be according to the public affairs prestored
Formula, calculates burning voltage a reference value Ua_std.
Burning voltage limit value obtaining step S6.According to burning voltage a reference value Ua_std, instruction current In, and arcing electricity
A reference value Ua_std, instruction current In and burning voltage limit value Ua corresponding relation Ra are pressed, burning voltage limit value Ua is obtained.Its
In, burning voltage limit value Ua increases with burning voltage a reference value Ua_std and instruction current In increase.In the present embodiment
In, corresponding relation Ra is the formula prestored.
Instruction current ascending step S7.When being determined as short circuit, increase instruction electric current In.
Arcing determination step S8.Whether the actual welding voltage U after decision instruction electric current In rises is more than burning voltage limit
Value Ua, if it is, being determined as arcing, if it is not, then being determined as non-arcing.If non-arcing, proceeds instruction current
Ascending step.If arcing, normal weld processing is carried out, i.e. the instruction current according to being calculated according to preset current Io enters
Row welding.
Burning voltage limit value Ua curve is shown in Fig. 6.From fig. 6 it can be seen that burning voltage limit value Ua is in peak value
Stage is higher, relatively low in the base value stage.Therefore, occurs arcing even in peak phase, the voltage of reality output also can be higher than combustion
Arc voltage limit value Ua.So, occur arcing even in peak phase, also can determine that out.
By above-mentioned control method, arcing can be all judged exactly in peak phase and base value stage, so that according to being
No arcing, carries out short-circuit processing or normal weld processing.Splashing can so be reduced, the stability of electric arc is improved.
[3rd embodiment]
The third embodiment of the present invention uses universal impulse welder as shown in Figure 1.The present invention the 3rd is described below
The software configuration of the pulsation welding device of embodiment.The software section of the pulsation welding device of third embodiment of the invention is by controlling
Device operation processed.
As shown in fig. 7, controller includes：Instruction current acquiring unit, it is used for according to preset current Io set in advance,
The wire feed rate v of wire feeder is obtained, and calculates instruction current In；Short circuit current flow deviation acquiring unit, it is used for root
According to instruction current In and actual welding electric current I (being detected by current detection circuit), short circuit current flow deviation Δ Is is obtained；Short circuit is sentenced
Order member, it is used to judge whether short circuit current flow deviation Δ Is is less than short circuit current flow threshold value Is set in advance, if it is,
It is determined as short circuit, if it is not, then being determined as not short-circuit.
Instruction current acquiring unit, short circuit current flow deviation acquiring unit and short-circuit identifying unit can pass through controller
The program module that stores is realized in operation FLASH or ROM.Short circuit current flow threshold value Is can be stored in the ROM of controller,
It can also be stored in external memory, can also store beyond the clouds etc..
The main weldering termination process control method of the pulsation welding device of third embodiment of the invention is described referring next to Fig. 8.
The control method comprises the following steps：
Instruction current obtaining step S21.According to preset current Io set in advance, the wire feed rate v of wire feeder is obtained,
And calculate instruction current In.
Short circuit current flow deviation obtaining step S22.According to instruction current In and actual welding electric current I, short circuit current flow is obtained
Deviation Δ Is.Wherein, Δ Is=I-In.
Short-circuit determination step S23.Judge whether short circuit current flow deviation Δ Is is more than short circuit current flow threshold value set in advance
Is.If it is, being determined as short circuit, if it is not, then being determined as not short-circuit.Alternatively, it is also possible to continuously judge the short of multiple moment
Whether road current deviation value Δ Is is more than short circuit current flow threshold value Is.If the short circuit current flow deviation Δ Is at continuous multiple moment is
More than short circuit current flow threshold value Is, then it is determined as short circuit.
By above-mentioned control method, short circuit can be judged exactly so that according to whether short circuit, carry out short-circuit processing or
Normal weld processing.Splashing can so be reduced, the stability of electric arc is improved.
[fourth embodiment]
The fourth embodiment of the present invention uses universal impulse welder as shown in Figure 1.Fourth embodiment of the invention
The software architecture of pulsation welding device and the pulsation welding device of 3rd embodiment and control method are essentially identical, therefore for phase
With description is partly not repeated, the difference of the two is only described below.
Difference is, as shown in figure 9, the pulsation welding device of fourth embodiment also includes：Instruction current rise is single
Member, it is used for when short-circuit identifying unit is determined as short circuit, increase instruction electric current In.Arcing current deviation acquiring unit, its
For according to the instruction current In ' after rise and actual welding electric current I, obtaining arcing current deviation Δ Ia.Arcing judges single
Member, it is used to judge whether arcing current deviation Δ Ia is more than arcing current threshold value Ia set in advance.If it is, judging
For arcing, if it is not, then being determined as non-arcing.
Instruction current elevation unit, arcing current deviation acquiring unit and arcing identifying unit can pass through controller
The program module that stores is realized in operation FLASH or ROM.Arcing current threshold value Ia can be stored in the ROM of controller,
It can also be stored in external memory, can also store beyond the clouds etc..
The main weldering termination process control method of the pulsation welding device of fourth embodiment of the invention is described referring next to Figure 10
With the difference of 3rd embodiment.The control method is further comprising the steps of after step S23：
Instruction current ascending step S24.When being determined as short circuit, increase instruction electric current In.
Arcing current deviation obtaining step S25.According to the instruction current In ' after rise and actual welding electric current I, obtain
Arcing current deviation Δ Ia.Wherein, Δ Ia=In '-I.
Arcing determination step S26.Judge whether the arcing current deviation Δ Ia is more than arcing current set in advance
Threshold value Ia.If it is, being determined as arcing, if it is not, then being determined as non-arcing.Alternatively, it is also possible to continuously judge multiple moment
Arcing current deviation Δ Ia whether be more than arcing current threshold value Ia.If the arcing current deviation Δ at continuous multiple moment
Ia is both greater than arcing current threshold value Ia, then is determined as arcing.
By above-mentioned control method, arcing can be judged exactly so that according to whether arcing, carry out short-circuit processing or
Normal weld processing.Splashing can so be reduced, the stability of electric arc is improved.
More than, with reference to detailed or specific embodiment, the present invention is described, but those skilled in the art manage
Solution, can carry out various changes and amendment on the premise of spirit and scope of the invention are not departed from.
[industrial applicibility]
By the pulsation welding device and its main weldering termination process control method of the present invention, splashing can be reduced, electric arc is improved
Stability.
Claims (8)
1. a kind of pulsation welding device, including：Wire feeder, controller, and voltage detecting circuit, the voltage detecting circuit
Actual welding voltage U is detected, the controller includes：
Instruction current acquiring unit, it is used for the wire feed speed that the wire feeder is obtained according to preset current Io set in advance
V is spent, and calculates instruction current In；
Short-circuit voltage a reference value acquiring unit, it is used to, according to the wire feed rate v, obtain short-circuit voltage a reference value Us_std；
Short-circuit voltage limit value acquiring unit, it is used for according to the short-circuit voltage a reference value Us_std, the instruction current In, with
And the short-circuit voltage a reference value Us_std set in advance, the instruction current In and short-circuit voltage limit value Us corresponding relation
Rs, obtains the short-circuit voltage limit value Us, wherein, the short-circuit voltage limit value Us is with the short-circuit voltage a reference value Us_std
Increase with the instruction current In and increase；And
Short-circuit identifying unit, it is used to judge whether the actual welding voltage U is less than the short-circuit voltage limit value Us, if
It is then to be determined as short circuit, if it is not, then being determined as not short-circuit.
2. pulsation welding device as claimed in claim 1, it is characterised in that also include：
Burning voltage a reference value acquiring unit, it is used to, according to the wire feed rate v, obtain burning voltage a reference value Ua_std；
Burning voltage limit value acquiring unit, it is used for according to the burning voltage a reference value Ua_std, the instruction current In, with
And the burning voltage a reference value Ua_std, the instruction current In and burning voltage limit value Ua corresponding relation Ra, obtain institute
Burning voltage limit value Ua is stated, wherein, the burning voltage limit value Ua is with the burning voltage a reference value Ua_std and the finger
Make electric current In increase and increase；
Instruction current elevation unit, it is used for when the short-circuit identifying unit is determined as short circuit, raises the instruction current In；
And
Arcing identifying unit, it is used to judge whether the actual welding voltage U after the instruction current In rises is more than the combustion
Arc voltage limit value Ua, if it is, being determined as arcing, if it is not, then being determined as non-arcing.
3. a kind of main weldering termination process control method of pulsation welding device, the pulsation welding device includes：Wire feeder, control
Device, and voltage detecting circuit, the voltage detecting circuit detect actual welding voltage U, and the control method includes：
Instruction current obtaining step, according to preset current Io set in advance, obtains the wire feed rate v of the wire feeder, and
And calculate instruction current In；
Short-circuit voltage a reference value obtaining step, according to the wire feed rate v, obtains short-circuit voltage a reference value Us_std；
Short-circuit voltage limit value obtaining step, according to the short-circuit voltage a reference value Us_std, the instruction current In, and in advance
The short-circuit voltage a reference value Us_std, the instruction current In of setting and short-circuit voltage limit value Us corresponding relation Rs, are obtained
The short-circuit voltage limit value Us is taken, wherein, the short-circuit voltage limit value Us is with the short-circuit voltage a reference value Us_std and institute
State instruction current In increase and increase；And
Short-circuit determination step, judges whether the actual welding voltage U is less than the short-circuit voltage limit value Us, if it is, sentencing
It is set to short circuit, if it is not, then being determined as not short-circuit.
4. the main weldering termination process control method of pulsation welding device as claimed in claim 3, it is characterised in that also include：
Burning voltage a reference value obtaining step, according to the wire feed rate v, obtains burning voltage a reference value Ua_std；
Burning voltage limit value obtaining step, according to the burning voltage a reference value Ua_std, the instruction current In, and it is described
Burning voltage a reference value Ua_std, the instruction current In and burning voltage limit value Ua corresponding relation Ra, obtain the arcing
Voltage limits Ua, wherein, the burning voltage limit value Ua is with the burning voltage a reference value Ua_std and the instruction current
In increase and increase；
Instruction current ascending step, when being determined as short circuit, raises the instruction current In；And
Arcing determination step, judges whether the actual welding voltage U after the instruction current In rises is more than the burning voltage
Limit value Ua, if it is, being determined as arcing, if it is not, then being determined as non-arcing.
5. a kind of pulsation welding device, including：Wire feeder, controller, and current detection circuit, the current detection circuit
Actual welding electric current I is detected, the controller includes：
Instruction current acquiring unit, it is used for the wire feed speed that the wire feeder is obtained according to preset current Io set in advance
V is spent, and calculates instruction current In；
Short circuit current flow deviation acquiring unit, it is used to, according to the instruction current In and the actual welding electric current I, obtain short
Road current deviation value Δ Is；
Short-circuit identifying unit, it is used to judge whether the short circuit current flow deviation Δ Is is more than short circuit current flow threshold set in advance
Value Is, if it is, being determined as short circuit, if it is not, then being determined as not short-circuit.
6. pulsation welding device as claimed in claim 5, it is characterised in that also include：
Instruction current elevation unit, it is used for when the short-circuit identifying unit is determined as short circuit, raises the instruction current In；
Arcing current deviation acquiring unit, it is used to, according to the instruction current In ' after rise and actual welding electric current I, obtain
Arcing current deviation Δ Ia；And
Arcing identifying unit, it is used to judge whether the arcing current deviation Δ Ia is more than arcing current threshold set in advance
Value Ia, if it is, being determined as arcing, if it is not, then being determined as non-arcing.
7. a kind of main weldering termination process control method of pulsation welding device, the pulsation welding device includes：Wire feeder, control
Device, and current detection circuit, the current detection circuit detect actual welding electric current I, and the control method includes：
Instruction current obtaining step, according to preset current Io set in advance, obtains the wire feed rate v of the wire feeder, and
And calculate instruction current In；
Short circuit current flow deviation obtaining step, according to instruction current In set in advance and the actual welding electric current I, is obtained short
Road current deviation value Δ Is；And
Short-circuit determination step, judges whether the short circuit current flow deviation Δ Is is more than short circuit current flow threshold value Is set in advance,
If it is, being determined as short circuit, if it is not, then being determined as not short-circuit.
8. the main weldering termination process control method of pulsation welding device as claimed in claim 7, it is characterised in that also include：
Instruction current ascending step, when being determined as short circuit, raises the instruction current In；
Arcing current deviation obtaining step, according to the instruction current In ' after rise and actual welding electric current I, obtains arcing electricity
Flow deviation Δ Ia；And
Arcing determination step, judges whether the arcing current deviation Δ Ia is more than arcing current threshold value Ia set in advance,
If it is, being determined as arcing, if it is not, then being determined as non-arcing.
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| CN111299757B (en) * | 2019-12-06 | 2021-11-09 | 唐山松下产业机器有限公司 | Control method, device and system for pulse welding process |
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| CN2317038Y (en) * | 1997-11-07 | 1999-05-05 | 唐山松下产业机器有限公司 | Current indicating device |
| US7173214B2 (en) * | 2004-04-01 | 2007-02-06 | Lincoln Global, Inc. | Electric arc pulse welder with short circuit control |
| KR100694862B1 (en) * | 2004-07-20 | 2007-03-13 | (주)인텔리안테크놀로지스 | A wide range searching apparatus of detecting a plurality of satelite and a method therefor |
| JP3844004B1 (en) * | 2005-05-31 | 2006-11-08 | 松下電器産業株式会社 | Pulse arc welding control method and pulse arc welding apparatus |
| CN201183157Y (en) * | 2007-06-22 | 2009-01-21 | 唐山松下产业机器有限公司 | Short-circuit protection control circuit for connecting line of welding machine and air valve |
| EP2529873B1 (en) * | 2011-05-30 | 2013-12-04 | EWM Hightec Welding GmbH | Arc processing control unit for controlling the arc welding flow strength for pulse welding using a protective gas ; Process of pulse welding using such process control |
| CN102615387A (en) * | 2012-03-02 | 2012-08-01 | 深圳麦格米特电气股份有限公司 | Method for controlling electric-arc welding power supply |
| CN202667879U (en) * | 2012-06-14 | 2013-01-16 | 淮北中矿机械电子工程中心 | Novel electric welding machine |
| WO2013190746A1 (en) * | 2012-06-18 | 2013-12-27 | パナソニック株式会社 | Arc-welding method and arc-welding apparatus |
| CN103286420B (en) * | 2013-05-30 | 2015-06-03 | 唐山松下产业机器有限公司 | Electric arc welder and electric arc welding short-circuit determining method |
| CN204160022U (en) * | 2014-09-02 | 2015-02-18 | 招商局重工（江苏）有限公司 | A kind of consumable electrode arc welding control device |
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