CN110064814A - A kind of arc initiation device of argon arc welding machine and striking method based on the arc initiation device - Google Patents
A kind of arc initiation device of argon arc welding machine and striking method based on the arc initiation device Download PDFInfo
- Publication number
- CN110064814A CN110064814A CN201910448884.XA CN201910448884A CN110064814A CN 110064814 A CN110064814 A CN 110064814A CN 201910448884 A CN201910448884 A CN 201910448884A CN 110064814 A CN110064814 A CN 110064814A
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- CN
- China
- Prior art keywords
- resistance
- tungsten electrode
- pin
- striking
- optocoupler
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- 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.)
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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
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
- B23K9/0672—Starting the arc without direct contact between electrodes
- B23K9/0673—Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
-
- 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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
Abstract
The present invention relates to a kind of arc initiation devices of argon arc welding machine, it is characterized by: the output end of the termination control of resistance R1 mono- power supply V, one end of other end connection striking switch N, the other end separated time of striking switch is separately connected one end of resistance R2 and the input terminal of striking controller C, the input terminal of output end connection " high frequency oscillator " or " high-voltage pulse generator " G of striking controller C, the output end separated time of " high frequency oscillator " or " high-voltage pulse generator " G are separately connected the pin 1 of tungsten electrode W, the input terminal of source of welding current S and one end of resistance R4, the pin 2 of the tungsten electrode W connects workpiece, the pin 1 of another termination optocoupler OP1 of resistance R4, 4 separated time of pin of optocoupler OP1 is separately connected the output end of source of welding current S and one end of resistance R3, the other end of the resistance R3 connects Control the input terminal of power supply V.The present invention is ignited electric arc using the very low high-frequency impulse of voltage, is avoided and is formed tungsten inclusion because voltage height causes to press from both sides tungsten electrode point damage due to.
Description
Technical field
The present invention relates in electric welding machine technical field, and in particular to a kind of arc initiation device of argon arc welding machine and is based on the striking
The striking method of device.
Background technique
Direct-current tungsten electrode argon-arc welder welding quality is good, and the technical papers of many important workpiece are all provided with direct current tungsten electrode argon
Arc-welding machine is welded.Direct current tungsten argon arc has a tungsten electrode W, and the end of tungsten electrode W to be ground very sharp, and such electric arc just collects
In.When striking, tungsten electrode W does not allow to be in contact with workpiece, otherwise the tip of tungsten electrode W can due to electric current scaling loss, the tungsten of burn-up
Point stays in workpiece, forms " tungsten inclusion " defect.Eucalyptus according to regulation, tungsten electrode W be at a distance from workpiece be equal to be greater than 3mm when it is necessary to
Ignite electric arc.Have arc initiation device in direct current tungsten electrode W argon arc welding machine thus, common arc initiation device be " high frequency oscillator " or
" high-voltage pulse generator " G." high frequency oscillator " or " high-voltage pulse generator " G can be in direct current tungsten electrode W argon arc welding machine
" just " amplitude is generated between " negative " terminal in 2000V ~ 3000 volt, the high-voltage pulse of 150 ~ 260 kHz, this pulse can be by tungsten electrode W
Gap breakdown between workpiece, ignite electric arc.Existing striking method is as shown in Figure 1, by tungsten electrode W, striking switch N, welding electricity
Source S, resistance R1, resistance R2, resistance R3, striking controller C and " high frequency oscillator " or " high-voltage pulse generator " G composition.
When welder presses striking switch N, striking controller C just makes " high frequency oscillator " or " high-voltage pulse generator " to exist
Hf and hv pulse is issued between tungsten electrode W and workpiece, source of welding current S is connected with tungsten electrode W, and ignite electric arc between tungsten electrode W and workpiece.But
It is this hf and hv pulse, very big interference is also caused to the control circuit of welding machine, makes circuit cisco unity malfunction, or even damage
Bad element.The output voltage for reducing " high frequency oscillator ", although interference can be reduced, striking distance is also small.Very short draws
Arc distance is from making welder be difficult to operate.Just there is striking distance to be more than or equal to the regulation of 3mm, the examination mark as argon arc welding machine thus
It is quasi-.
In order to solve the interference of " high frequency oscillator " to welding machine control circuit, and there is the method for " short circuit " striking.That is: first will
Tungsten electrode W and workpiece short circuit when striking, by the electric current of 5A or so between tungsten electrode W and workpiece, then lift tungsten electrode W, pull-up electricity
Arc.This " short circuit " arc inciting process, without High-frequency Interference, this is its biggest advantage.But shortcoming is the electricity for flowing through tungsten electrode W
Stream, although only 5A, also can scaling loss tungsten electrode W tip, formed tungsten inclusion.If reducing the electric current passed through between tungsten electrode W and workpiece again,
Just cannot reliably ignite electric arc when pull-up electrode.
Summary of the invention
In view of the above problems, the present invention provides a kind of arc initiation device of argon arc welding machine and striking methods.
In order to solve the above technical problems, technical solution provided by the invention are as follows: a kind of arc initiation device of argon arc welding machine is provided,
Including welding switch N, source of welding current S, striking controller C by tungsten electrode W, " high frequency oscillator " or " high-voltage pulse generation
Device " G composition, innovative point are: further including control power supply V, resistance R1, resistance R2, resistance R3, resistance R4, optocoupler OP1, institute
The output end of the termination control of resistance R1 mono- power supply V is stated, the other end connects one end of striking switch N, and the striking switchs another
End separated time is separately connected one end of resistance R2 and the input terminal of striking controller C, the output end connection of the striking controller C
The input terminal of " high frequency oscillator " or " high-voltage pulse generator " G, " high frequency oscillator " or " high-voltage pulse generator " G's
Output end separated time is separately connected one end of the pin 1 of tungsten electrode W, the input terminal of source of welding current S and resistance R4, and the tungsten electrode W's draws
Foot 2 connects workpiece, the pin 1 of another termination optocoupler OP1 of the resistance R4, and 4 separated time of pin of optocoupler OP1 is separately connected welding
The output end of power supply S and one end of resistance R3, the input terminal of the other end connection control power supply V of the resistance R3.
Further, the other end of the resistance R2, workpiece, the pin 2 of optocoupler OP1 and pin 3 are grounded.
Further, described " high frequency oscillator " or " high-voltage pulse generator " G, tungsten electrode W and workpiece composition tungsten electrode short circuit
Differentiate circuit B.
Further, the model PC817 of the optocoupler OP1.
To solve the technical problem in background technique, the present invention also provides a kind of striking sides based on above-mentioned arc initiation device
Method, it is characterised in that: the specific steps of the striking method of the argon arc welding are as follows:
A, striking switch N is pressed, " high frequency oscillator " or " high-voltage pulse generator " G are powered, and issue hf and hv pulse；
B, when tungsten electrode W contact workpiece, the pin 1 of optocoupler OP1 is low level, and the pin 4 of optocoupler OP1 is high level, closes weldering
Meet power supply S；
C, when starting to weld, welder is slowly mentioned out tungsten electrode W, and when tungsten electrode W is detached from workpiece, the pin 1 of optocoupler OP1 is high electricity
Flat, the pin 4 of optocoupler OP1 is low level, connects source of welding current S, ignite electric arc.
Beneficial effects of the present invention:
(1) arc generating of argon welder method disclosed in this invention, be tungsten electrode W and workpiece apart from it is close in the case where, high frequency arteries and veins
The electric arc that ignites is rushed, therefore reduces the interference of high-frequency and high-voltage striking pulse pair welding machine control circuit or robot.
(2) present invention is ignited electric arc using the very low high-frequency impulse of voltage, presss from both sides point to tungsten electrode W caused by avoiding because of voltage height
It damages and forms tungsten inclusion.
(3) using circuit designed by arc generating of argon welder method disclosed according to the present invention, welder is not required to train, only
Mention tungsten electrode W, will tungsten electrode W and workpiece apart from it is close in the case where, ignited electric arc with the very low high-frequency impulse of voltage.It avoids
Welder is to be difficult to accurately control tungsten electrode W and the closer distance of workpiece, facilitates welder's operation.
Detailed description of the invention
It, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments recorded in the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.Fig. 1 is the arc initiation device structure chart of prior art argon arc welding.
Fig. 2 is the arc initiation device structure chart of argon arc welding of the present invention.
Fig. 3 is tungsten electrode short circuit discrimination flow chart of the invention.
Fig. 4 is the arc initiation device structure chart of argon arc welding of the present invention.
Specific embodiment
Technical solution of the present invention will be clearly and completely described by specific embodiment below.
The arc initiation device and striking method of a kind of argon arc welding machine of the invention, the specific structure of arc initiation device are as shown in Figure 2:
Including by source of welding current S, tungsten electrode short circuit discrimination circuit B, striking controller C and " high frequency oscillator " or " high-voltage pulse generator "
G, concrete principle are as follows:
(1) tungsten electrode W and workpiece short circuit, flow through tungsten electrode 1ma or smaller electric current, this electric current is only used to differentiate whether oneself is detached from tungsten electrode
Workpiece, the electric current will not scaling loss tungsten electrode tip.
(2) voltage U when measuring voltage U between tungsten electrode W and workpiece, tungsten electrode W and workpiece short circuit simultaneously between tungsten electrode and workpiece=
0。
(3) arc process is as shown in Figure 3: tungsten electrode W is in contact with workpiece, and the voltage U between tungsten electrode W and workpiece is 0V, slowly
Lift tungsten electrode W, when the voltage U between tungsten electrode W and workpiece is just greater than 0V, showing tungsten electrode W, oneself is detached from workpiece, but tungsten electrode W at this time
It is very close at a distance between workpiece, " high frequency oscillator " or " high-voltage pulse generator " G is connected at this time, is also turned on the source of welding current
N connects contactor J, and ignite electric arc.Because tungsten electrode W between workpiece at a distance from very close, " high frequency oscillator " or " high-tension pulse at this time
Rushing generator " G only needs to issue the very low high-frequency impulse of voltage, and can ignite electric arc, and very low high frequency voltage, will not be to electricity
Road generates interference.
It for the above striking principle, is carried out to the arc initiation device and striking method of a kind of argon arc welding machine of the invention below
Description.
A kind of structure chart of the welder of argon arc welding of the invention is as shown in Figure 4: including by tungsten electrode W, welding switch
N, source of welding current S, striking controller C, " high frequency oscillator " or " high-voltage pulse generator " G composition, further include control power supply V,
Resistance R1, resistance R2, resistance R3, resistance R4, optocoupler OP1, the output end of the termination control of resistance R1 mono- power supply V, other end connection
The other end separated time of one end of striking switch N, striking switch is separately connected one end of resistance R2 and the input of striking controller C
End, the input terminal of output end connection " high frequency oscillator " or " high-voltage pulse generator " G of the striking controller C are described " high
The output end separated time of frequency oscillator " or " high-voltage pulse generator " G are separately connected the input of the pin 1, source of welding current S of tungsten electrode W
The pin 2 of the one end at end and resistance R4, the tungsten electrode W connects workpiece, the pin 1 of another termination optocoupler OP1 of resistance R4, optocoupler
4 separated time of pin of OP1 is separately connected the output end of source of welding current S and one end of resistance R3, and the other end of resistance R3 connects control
The input terminal of power supply V, the model PC817 of the optocoupler OP1.The other end of resistance R2, workpiece, optocoupler OP1 pin 2 and draw
Foot 3 is grounded.Wherein " high frequency oscillator " or " high-voltage pulse generator " G, tungsten electrode W and workpiece form tungsten electrode short circuit discrimination circuit
B。
A kind of specific steps of the striking method of arc initiation device based on argon arc welding of the invention are as follows:
A, striking switch N is pressed, " high frequency oscillator " or " high-voltage pulse generator " G are powered, and issue hf and hv pulse；
B, when tungsten electrode W contact workpiece, the pin 1 of optocoupler OP1 is low level, and the pin 4 of optocoupler OP1 is high level, closes weldering
Meet power supply S；
C, when starting to weld, welder is slowly mentioned out tungsten electrode W, and when tungsten electrode W is detached from workpiece, the pin 1 of optocoupler OP1 is high electricity
Flat, the pin 4 of optocoupler OP1 is low level, connects source of welding current S, ignite electric arc.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to design of the invention
It is defined with range, without departing from the design concept of the invention, ordinary engineering and technical personnel is to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content is all documented in technical requirements book.
Claims (5)
1. a kind of arc initiation device of argon arc welding machine, including by tungsten electrode W, switch N, source of welding current S, striking controller C are welded, "
High frequency oscillator " or " high-voltage pulse generator " G composition, it is characterised in that: it further include control power supply V, resistance R1, resistance
R2, resistance R3, resistance R4, optocoupler OP1, the output end of the termination of the resistance R1 mono- control power supply V, the other end connect striking switch
The other end separated time of one end of N, the striking switch is separately connected one end of resistance R2 and the input terminal of striking controller C, institute
State the input terminal of output end connection " high frequency oscillator " or " high-voltage pulse generator " G of striking controller the C, " high frequency vibrating
Swing device " or " high-voltage pulse generator " G output end separated time be separately connected the pin 1 of tungsten electrode W, source of welding current S input terminal and
The pin 2 of one end of resistance R4, the tungsten electrode W connects workpiece, the pin 1 of another termination optocoupler OP1 of the resistance R4, optocoupler
4 separated time of pin of OP1 is separately connected the output end of source of welding current S and one end of resistance R3, the other end connection of the resistance R3
Control the input terminal of power supply V.
2. a kind of arc initiation device of argon arc welding machine according to claim 1, it is characterised in that: the resistance R2's is another
End, workpiece, the pin 2 of optocoupler OP1 and pin 3 are grounded.
3. a kind of arc initiation device of argon arc welding machine according to claim 1, it is characterised in that: " high frequency oscillator " or
" high-voltage pulse generator " G, tungsten electrode W and workpiece form tungsten electrode short circuit discrimination circuit B.
4. a kind of arc initiation device of argon arc welding machine according to claim 1, it is characterised in that: the model of the optocoupler OP1
For PC817.
5. a kind of striking method of the arc initiation device based on argon arc welding, it is characterised in that: the striking method of the argon arc welding
Specific steps are as follows:
A, striking switch N is pressed, " high frequency oscillator " or " high-voltage pulse generator " G are powered, and issue hf and hv pulse；
B, when tungsten electrode W contact workpiece, the pin 1 of optocoupler OP1 is low level, and the pin 4 of optocoupler OP1 is high level, closes weldering
Meet power supply S；
C, when starting to weld, welder is slowly mentioned out tungsten electrode W, and when tungsten electrode W is detached from workpiece, the pin 1 of optocoupler OP1 is high electricity
Flat, the pin 4 of optocoupler OP1 is low level, connects source of welding current S, ignite electric arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448884.XA CN110064814B (en) | 2019-05-28 | 2019-05-28 | Arc striking device of argon arc welding machine and arc striking method based on arc striking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448884.XA CN110064814B (en) | 2019-05-28 | 2019-05-28 | Arc striking device of argon arc welding machine and arc striking method based on arc striking device |
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| CN110064814A true CN110064814A (en) | 2019-07-30 |
| CN110064814B CN110064814B (en) | 2021-06-29 |
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| CN201910448884.XA Expired - Fee Related CN110064814B (en) | 2019-05-28 | 2019-05-28 | Arc striking device of argon arc welding machine and arc striking method based on arc striking device |
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Citations (10)
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|---|---|---|---|---|
| SE373007B (en) * | 1971-04-20 | 1975-01-20 | Messer Griesheim Gmbh | |
| CN1033448A (en) * | 1986-12-11 | 1989-06-21 | 林肯电学公司 | The method and apparatus of control short-circuit welding system |
| CN1084793A (en) * | 1992-09-28 | 1994-04-06 | 机械电子工业部成都电焊机研究所 | A kind of pulsed tungsten argon arc weld(ing) machine controller |
| CN101927392A (en) * | 2009-06-25 | 2010-12-29 | 上海沪工电焊机制造有限公司 | Electric welder arc striking device |
| CN102218581A (en) * | 2011-04-28 | 2011-10-19 | 北京工业大学 | Composite high-frequency pulse welding system and process |
| CN103264214A (en) * | 2013-04-28 | 2013-08-28 | 华中科技大学 | Arcing circuit for plasma arc cutting |
| WO2014076543A2 (en) * | 2012-11-13 | 2014-05-22 | Lincoln Global, Inc. | Systems and methods to facilitate the starting and stopping of arc welding processes |
| CN106563864A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | High-frequency impulse arc-initiating device on direct-current welder |
| CN106825884A (en) * | 2017-02-20 | 2017-06-13 | 上海威特力焊接设备制造股份有限公司 | A kind of CUT turns arc circuit and method |
| CN207982508U (en) * | 2017-12-27 | 2018-10-19 | 兰州石化职业技术学院 | A kind of novel built-in promotion arc strike control device of TIG welderings |
-
2019
- 2019-05-28 CN CN201910448884.XA patent/CN110064814B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE373007B (en) * | 1971-04-20 | 1975-01-20 | Messer Griesheim Gmbh | |
| CN1033448A (en) * | 1986-12-11 | 1989-06-21 | 林肯电学公司 | The method and apparatus of control short-circuit welding system |
| CN1084793A (en) * | 1992-09-28 | 1994-04-06 | 机械电子工业部成都电焊机研究所 | A kind of pulsed tungsten argon arc weld(ing) machine controller |
| CN101927392A (en) * | 2009-06-25 | 2010-12-29 | 上海沪工电焊机制造有限公司 | Electric welder arc striking device |
| CN102218581A (en) * | 2011-04-28 | 2011-10-19 | 北京工业大学 | Composite high-frequency pulse welding system and process |
| WO2014076543A2 (en) * | 2012-11-13 | 2014-05-22 | Lincoln Global, Inc. | Systems and methods to facilitate the starting and stopping of arc welding processes |
| CN103264214A (en) * | 2013-04-28 | 2013-08-28 | 华中科技大学 | Arcing circuit for plasma arc cutting |
| CN106563864A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | High-frequency impulse arc-initiating device on direct-current welder |
| CN106825884A (en) * | 2017-02-20 | 2017-06-13 | 上海威特力焊接设备制造股份有限公司 | A kind of CUT turns arc circuit and method |
| CN207982508U (en) * | 2017-12-27 | 2018-10-19 | 兰州石化职业技术学院 | A kind of novel built-in promotion arc strike control device of TIG welderings |
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| CN110064814B (en) | 2021-06-29 |
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Inventor after: Shi Weiyi Inventor after: Liu Qiang Inventor after: Zhao Kongbiao Inventor after: Chen Fulan Inventor before: Shi Weiyi Inventor before: Liu Qiang Inventor before: Zhao Sunbiao Inventor before: Chen Fulan |
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