CN105537728A - Circuit for increasing small current arc striking successful rate and stability of inverter argon arc welding machine - Google Patents
Circuit for increasing small current arc striking successful rate and stability of inverter argon arc welding machine Download PDFInfo
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- CN105537728A CN105537728A CN201610056494.4A CN201610056494A CN105537728A CN 105537728 A CN105537728 A CN 105537728A CN 201610056494 A CN201610056494 A CN 201610056494A CN 105537728 A CN105537728 A CN 105537728A
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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
- B23K9/10—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
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Abstract
The invention provides a circuit for increasing the small current arc striking successful rate and stability of an inverter argon arc welding machine. The circuit comprises an inverter welding machine main loop circuit and an output loop arc stabilizing circuit, wherein a double-tube and single-end forward topology circuit is adopted as the inverter welding machine main loop circuit which inverts direct current obtained after input alternating current is rectified into high-frequency square wave current and then rectifies the square wave current into low-voltage direct current needed by the inverter argon arc welding machine to output the low-voltage direct current; and the output loop arc stabilizing circuit is connected into the inverter welding machine main loop circuit in series and used for controlling the working state of the inverter argon arc welding machine. According to the circuit for increasing the small current arc striking successful rate and the stability of the inverter argon arc welding machine, due to the fact that the measures that the arc stabilizing circuit works during arc striking with small current and arc striking with large current and the arc stabilizing circuit only works with small current in the welding process are taken, the size of the arc stabilizing circuit is greatly reduced, cost is saved, the effect of increasing the small current arc striking successful rate and stability can be achieved, and the circuit is economical and applicable.
Description
Technical field
The present invention relates to inverter argon arc welding machine technical field, particularly, relate to a kind of circuit improving inverter argon arc welding machine small area analysis arcing initiation success rate and stability.
Background technology
Argon arc welding technology is the fastest, the most widely used a kind of solder technology of development.In recent years, argon arc welding, particularly GTAW, requisite means in the welding of various metal structure are become, so also increasing to the demand of argon arc welder, especially weld the high-alloy steel (as stainless steel, heat resisting steel) of oxidizable non-ferrous metal (as aluminium, magnesium and alloy thereof), rare metal (as molybdenum, titanium and titanium alloys), high strength alloy steel and some specific uses both at home and abroad.It is thinner that the workpiece of welding also comes, and this just requires that argon arc welding machine can export a smaller electric current, under small area analysis the arcing initiation success rate of argon arc welding machine and the stability of small area analysis most important, also become this area problem demanding prompt solution.
Do not find explanation or the report of technology similar to the present invention at present, not yet collect similar data both at home and abroad yet.
Summary of the invention
For above shortcomings in prior art, the object of this invention is to provide a kind of solution circuit improving inverter argon arc welding machine small area analysis arcing initiation success rate and stability, traditional inverter argon arc welding machine output loop increases arc static circuit, in addition, because when taking small area analysis and big current striking, arc static circuit all works, the measure that in welding process, arc static circuit only works under small area analysis, the volume of arc static circuit is reduced greatly, both saved cost, and can reach again and improve small area analysis striking success and stable effect.
In order to achieve the above object, a kind of circuit improving inverter argon arc welding machine small area analysis arcing initiation success rate and stability provided by the invention, is achieved through the following technical solutions.
Improve a circuit for inverter argon arc welding machine small area analysis arcing initiation success rate and stability, comprise inverter type welder main loop circuit, output loop arc static circuit; Wherein:
Described inverter type welder main loop circuit adopts two-tube single-end ortho-exciting topological circuit, the DC inverter after input AC electric rectification is become the square wave electricity of high frequency, and then the low-voltage DC be rectified into required for inverter argon arc welding machine exports;
Described output loop arc static circuit is series in inverter type welder main loop circuit, for improving inverter argon arc welding machine small area analysis arcing initiation success rate and stability.
Preferably, described two-tube single-end ortho-exciting topological circuit, comprising: inverter circuit and rear class rectification circuit; Wherein:
-described inverter circuit comprises:
Power tube Q3 and Q4 is in parallel; Power tube Q5 and Q6 is in parallel;
Diode D3 is connected to the colelctor electrode of the direct current VOUT+ after AC rectification and power tube Q5 and power tube Q6; Diode D4 is connected to emitter stage and the GND of power tube Q3 and power tube Q4;
Transformer T1 is connected to the emitter stage of power tube Q3 and power tube Q4, the colelctor electrode of sample transformer T2, power tube Q5 and power tube Q6;
Resistance R30 and electric capacity C17 is parallel to the two ends of power tube Q3 after connecting;
Resistance R31 and electric capacity C18 is parallel to the two ends of power tube Q6 after connecting;
Diode D1 is in parallel with resistance R30; Diode D2 is in parallel with resistance R31;
Direct current VOUT+ after input AC electric rectification is inputted by the input of inverter circuit and is reverse into the square wave electricity of high frequency, then exports in rear class rectification circuit by transformer T1;
Described resistance R30, electric capacity C17 and diode D1 and resistance R31, electric capacity C18 and diode D2 form RCD uptake pathway respectively, work reliably for the protection of power diode; Described diode D3 and D4 plays clamping action, for by the voltage clamp on power tube on the supply voltage;
-described rear class rectification circuit comprises:
Fast recovery diode D10 and D11 is connected between transformer T1 and diode D12;
Fast recovery diode D12, D13, D15 and D14 are in parallel successively;
Resistance R32 and electric capacity C20 is in parallel with fast recovery diode D10 after connecting;
Resistance R33 and electric capacity C21 is in parallel with fast recovery diode D14 after connecting;
Bi-directional voltage stabilizing pipe DZ1 is in parallel with resistance R33 and electric capacity C21;
Electric capacity C22 and C23 is in parallel with bi-directional voltage stabilizing pipe DZ1 after connecting;
Inductance L 2 is connected between resistance R33 and bi-directional voltage stabilizing pipe DZ1;
Inductance L 4 is connected with electric capacity L2;
When power tube Q3, Q4, Q5, Q6 conducting, power supply energy by transformer T1, fast recovery diode D10 and D11 to secondary load export energy, and in inductance L 2 storage power;
When power tube Q3, Q4, Q5, Q6 close, the energy be stored in inductance L 2 exports energy by fast recovery diode D12, D13, D14, D15 continuously to load;
Described resistance R32 and electric capacity C20, resistance R33 and electric capacity C21 form RC uptake pathway respectively, work reliably for the protection of fast recovery diode D10, D11, D12, D13, D14 and D15; Described bi-directional voltage stabilizing pipe DZ1 is used for protecting fast recovery diode not breakdown; Described electric capacity C22 and C23 is used for suppressing to export interference, and energy smooth output voltage, make the ripple of output voltage less; Described inductance L 4 is used for producing high pressure in output loop, realizes the high-voltage arc strike of argon arc welding.
Preferably, described transformer T1 adopts high frequency transformer; Described inductance L 4 adopts high-frequency arc strike inductance.
Preferably, described output loop arc static circuit comprises: electric capacity C59 and switch RL8B; Wherein:
Described electric capacity C59 and switch RL8B is parallel between bi-directional voltage stabilizing pipe DZ1 and electric capacity C22 and C23 after connecting.
Preferably, described switch RL8B is controlled by control circuit, and described control circuit comprises: control panel, amplifier U5B, amplifier U5A, optocoupler U4, triode Q26 and switch RL8A; Wherein:
The signal output part of described control panel is connected with the input of amplifier U5B;
The output of described amplifier U5B is connected with the input of amplifier U5A;
The output of described amplifier U5A is connected with optocoupler U4 and triode Q26 respectively;
Described triode Q26 is connected with switch RL8A.
Preferably, described switch RL8A forms the coiler part of switch RL8; Described RL8B forms the switch contact part of switch RL8.
Preferably, the control mode of described control circuit is:
Welding machine is under arc welding state, and electric capacity C59 does not work;
Welding machine is under argon arc welding state:
During-small area analysis, electric capacity C59 works always;
During-big current, electric capacity C59 only works instantaneously in striking, does not work in welding process.
Preferably, described small area analysis and big current are determined in the following manner:
Small area analysis is defined as during output current≤15A;
Big current is defined as during output current > 15A.
Compared with prior art, the present invention has following beneficial effect:
1, because arc static circuit when taking small area analysis and big current striking all works, the measure that in welding process, arc static circuit only works under small area analysis, the volume of arc static circuit is reduced greatly, has both saved cost, can reach again and improve small area analysis striking success and stable effect;
2, the present invention effectively improves the stability of arcing initiation success rate and small area analysis welding arc under inverter argon arc welding machine small area analysis, economic and practical.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the two-tube single-end ortho-exciting topological circuit of inverter type welder provided by the invention;
Fig. 2 is the output loop arc static circuit of inverter type welder provided by the invention.
Detailed description of the invention
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Embodiment
Present embodiments provide a kind of circuit improving inverter argon arc welding machine small area analysis arcing initiation success rate and stability, circuit part comprises inverter type welder main loop circuit, output loop arc static circuit.Wherein:
What described inverter type welder main loop circuit adopted is two-tube single-end ortho-exciting topological circuit, the DC inverter after input AC electric rectification is become the square wave electricity of high frequency, and then is rectified into the low-voltage DC required for inverter type welder.
Described output loop arc static circuit is series capacitance and switch in the circuit after exporting rectification, and carrys out gauge tap by control circuit, and the state realizing arc static circuit work controls.
Following according to Fig. 1 ~ Fig. 2, illustrate the better embodiment of the present embodiment:
Improve a circuit for inverter argon arc welding machine small area analysis arcing initiation success rate and stability, comprise inverter type welder main loop circuit and output loop arc static circuit; Wherein:
Described inverter type welder main loop circuit adopts two-tube single-end ortho-exciting topological circuit, the DC inverter after input AC electric rectification is become the square wave electricity of high frequency, and then the low-voltage DC be rectified into required for inverter argon arc welding machine exports;
Described output loop arc static circuit is series in inverter type welder main loop circuit, for controlling the duty of inverter argon arc welding machine.
As shown in Figure 1, two-tube single-end ortho-exciting topological circuit, mainly comprises:
By power tube Q3, Q4, Q5, Q6; the inverter circuit of diode D3, D4 and T1 composition; mainly the direct current (VOUT+) after interchange input rectifying is reverse into the square wave electricity of high frequency; then be transported in the rectification circuit of rear class by high frequency transformer T1; R30, C17, D1 in circuit, R31, C18, D2 form RCD uptake pathway, and protection power device works reliably; D3, D4 mainly play clamping action, the voltage clamp on power switch on the supply voltage.
Circuit connecting relation is:
Described inverter circuit comprises:
Power tube Q3 and Q4 is in parallel; Power tube Q5 and Q6 is in parallel;
Diode D3 is connected to VOUT+ and power tube Q5, Q6 colelctor electrode; Diode D4 is connected to emitter stage and the GND of Q3, Q4;
Transformer T1 is connected to the colelctor electrode of power tube Q3 and Q4 emitter stage, sampling transformer T2, power tube Q5 and Q6;
Resistance R30 and electric capacity C17 is parallel to the two ends of power tube Q3 after connecting;
Resistance R31 and electric capacity C18 is parallel to the two ends of power tube Q6 after connecting;
Diode D1 is in parallel with resistance R30; Diode D2 is in parallel with resistance R31;
Direct current VOUT+ after input AC electric rectification is inputted by the input of inverter circuit and is reverse into the square wave electricity of high frequency, then exports in rear class rectification circuit by transformer T1;
Described resistance R30, electric capacity C17 and diode D1 and resistance R31, electric capacity C18 and diode D2 form RCD uptake pathway respectively, work reliably for the protection of power diode; Described diode D3 and D4 plays clamping action, for by the voltage clamp on power tube on the supply voltage.
By fast recovery diode D10, D11, D12, D13, D14, D15, inductance L 2 forms rear class rectification circuit.Mainly at power tube Q3, Q4, Q5, during Q6 conducting, power supply energy is by transformer T1, fast recovery diode D10, D11 exports energy to secondary load, and in inductance L 2 storage power, power tube Q3, Q4, Q5, time Q6 closes, be stored in energy in inductance L 2 by diode D12, D13, D14, D15 exports energy to load, and ensure the continuity of output current, resistance R32, C20, R33, C21 forms the protection of RC uptake pathway and is used for fast recovery diode D10 ~ D15 reliably working, bi-directional voltage stabilizing pipe DZ1 is used for protecting fast recovery diode not breakdown, electric capacity C22, C23 is used for suppressing to export interference, and energy smooth output voltage, make the ripple of output voltage less.Inductance L 4 is high-frequency arc strike inductance, is used for producing high pressure in output loop, realizes the high-voltage arc strike of argon arc welding.
Circuit connecting relation is:
Described rear class rectification circuit comprises:
Fast recovery diode D10 and D11 is connected between transformer T1 and diode D12;
Fast recovery diode D12, D13, D15 and D14 are in parallel successively;
Resistance R32 and electric capacity C20 is in parallel with fast recovery diode D10 after connecting;
Resistance R33 and electric capacity C21 is in parallel with fast recovery diode D14 after connecting;
Bi-directional voltage stabilizing pipe DZ1 is in parallel with resistance R33 and electric capacity C21;
Electric capacity C22 and C23 is in parallel with bi-directional voltage stabilizing pipe DZ1 after connecting;
Inductance L 2 is connected between resistance R33 and bi-directional voltage stabilizing pipe DZ1;
Inductance L 4 (can adopt high-frequency arc strike inductance) is connected with inductance L 2;
When power tube Q3, Q4, Q5, Q6 conducting, power supply energy by transformer T1, fast recovery diode D10 and D11 to secondary load export energy, and in inductance L 2 storage power;
When power tube Q3, Q4, Q5, Q6 close, the energy be stored in inductance L 2 exports energy by fast recovery diode D12, D13, D14, D15 continuously to load;
Described resistance R32 and electric capacity C20, resistance R33 and electric capacity C21 form RC uptake pathway respectively, work reliably for the protection of fast recovery diode D10, D11, D12, D13, D14 and D15; Described bi-directional voltage stabilizing pipe DZ1 is used for protecting fast recovery diode not breakdown; Described electric capacity C22 and C23 is used for suppressing to export interference, and energy smooth output voltage, make the ripple of output voltage less; Described inductance L 4 is used for producing high pressure in output loop, realizes the high-voltage arc strike of argon arc welding.
As shown in Figure 2, be the arc static circuit of argon arc welding
Composition graphs 1, relative to traditional inverter output circuit, Capacity Ratio larger electric capacity C59 and switch RL8B is added in output circuit, all generally adopt PWM control mode to realize for inverter type welder, the constant current output characteristic of welding machine realizes by the dutycycle of control PWM, under big current, the dutycycle of PWM is larger, the ripple of output voltage and electric current is all very little, the stability of striking and electric arc compares better, under small area analysis, the dutycycle of PWM is very little, high-frequency arc strike is made easily to occur drawing the situation of not firing with when welding and change between arc at high frequency, namely the arcing initiation success rate of high frequency is lower, in addition, due to the ripples ultra of the smaller output current of dutycycle and voltage, other is large, electric arc is easily by ectocine, small area analysis ripple current is large, electric arc performance is unstable, larger energy can be stored after increasing bulky capacitor C59, smooth output voltage, the ripple of small area analysis is diminished, improve the stability of small area analysis.
Circuit connecting relation is:
Described output loop arc static circuit comprises: electric capacity C59 and switch RL8B; Wherein:
Described electric capacity C59 and switch RL8B is parallel between bi-directional voltage stabilizing pipe DZ1 and electric capacity C22 and C23 after connecting.
Described switch RL8B is controlled by control circuit, and described control circuit comprises: control panel, amplifier U5B, amplifier U5A, optocoupler U4, triode Q26 and switch RL8A; Wherein:
The signal output part of described control panel is connected with the input of amplifier U5B;
The output of described amplifier U5B is connected with the input of amplifier U5A;
The output of described amplifier U5A is connected with optocoupler U4 and triode Q26 respectively;
Described triode Q26 is connected with switch RL8A;
Described switch RL8A is the coiler part of switch RL8; Described RL8B is the switch contact part of switch RL8.
The control principle of control circuit is:
In Fig. 2,1TIGOMMA signal is selected from panel, when welding selection MMA (arc welding), 1TIGOMMA is low level, amplifier U5B output 7 pin is low level (0V), 3 pin of amplifier U5A are caused to be low level, 2 pin of amplifier U5A are setting value (the setting value 1V of output current, welding machine exports 100A), this value is greater than 0V forever, so 1 pin of U5A is low level, simultaneously because 1TIGOMMA is low level, optocoupler U4 does not work, like this, the B pole of triode Q26 not electric condition, do not work, RL8A can not obtain electric, switch RLB not adhesive, ensure like this under MMA state, C59 does not work, improve the life-span of electric capacity C59,
When argon arc welding state chosen by panel, 1TIGOMMA is high level, when output current is set as small area analysis, Ig is smaller, and lower than the 3 pin voltages of amplifier U5A, 1 pin exports as high level, triode Q26 is in running order, RL8A obtains electric, switch RL8B adhesive, and electric capacity C59 is connected in output loop, improve the stability of arcing initiation success rate and electric current, welding arc stablility.
When output current setting value is large, Ig is greater than the 3 pin voltages of U5A, and output 1 pin of U5A is low level.At this moment Q26 work is controlled by diode D69 by optocoupler U4, and close during striking arc welding gun switch, welding machine output no-load voltage.Make the diode end conducting of optocoupler U4,1TIGOMMA high level signal is transported to D69 by the triode of optocoupler U4, then arrive the B pole of Q26, Q26 works, and switch RL8B works, high frequency ignites welding arc, this be welding arc voltage (OUT+OUT-) relatively low, can not make voltage-stabiliser tube DZ2, DZ12 conducting, optocoupler does not work, switch RL8B does not work, and electric capacity C59 does not work.
Realized by above control circuit, welding machine is under MMA state, electric capacity C59 does not work, and under T1G (argon arc welding) state, during small area analysis, electric capacity C59 works always, during big current, C59 only works instantaneously in striking, do not work in welding process, so both achieve the result that argon arc welding improves small area analysis arcing initiation success rate and stability, can not work by electric capacity C59 when big current welds again, improve the life-span of C59, economic and practical.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. improve a circuit for inverter argon arc welding machine small area analysis arcing initiation success rate and stability, it is characterized in that, comprise inverter type welder main loop circuit and output loop arc static circuit; Wherein:
Described inverter type welder main loop circuit adopts two-tube single-end ortho-exciting topological circuit, the DC inverter after input AC electric rectification is become the square wave electricity of high frequency, and then the low-voltage DC be rectified into required for inverter argon arc welding machine exports;
Described output loop arc static circuit is series in inverter type welder main loop circuit, for controlling the duty of inverter argon arc welding machine.
2. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 1 and stability, is characterized in that, described two-tube single-end ortho-exciting topological circuit, comprising: inverter circuit and rear class rectification circuit; Wherein:
-described inverter circuit is mainly:
Power tube Q3 and Q4 is in parallel; Power tube Q5 and Q6 is in parallel;
Diode D3 is connected to the colelctor electrode of the direct current VOUT+ after AC rectification and power tube Q5 and power tube Q6; Diode D4 is connected to emitter stage and the GND of power tube Q3 and power tube Q4;
Transformer T1 is connected to the emitter stage of power tube Q3 and power tube Q4, the colelctor electrode of sample transformer T2, power tube Q5 and power tube Q6;
Resistance R30 and electric capacity C17 is parallel to the two ends of power tube Q3 after connecting;
Resistance R31 and electric capacity C18 is parallel to the two ends of power tube Q6 after connecting;
Diode D1 is in parallel with resistance R30; Diode D2 is in parallel with resistance R31;
Direct current VOUT+ after input AC electric rectification is inputted by the input of inverter circuit and is reverse into the square wave electricity of high frequency, then exports in rear class rectification circuit by transformer T1;
Described resistance R30, electric capacity C17 and diode D1 and resistance R31, electric capacity C18 and diode D2 form RCD uptake pathway respectively, work reliably for the protection of power diode; Described diode D3 and D4 plays clamping action, for by the voltage clamp on power tube on the supply voltage;
-described rear class rectification circuit is mainly:
Fast recovery diode D10 and D11 is connected between transformer T1 and diode D12;
Fast recovery diode D12, D13, D15 and D14 are in parallel successively;
Resistance R32 and electric capacity C20 is in parallel with fast recovery diode D10 after connecting;
Resistance R33 and electric capacity C21 is in parallel with fast recovery diode D14 after connecting;
Bi-directional voltage stabilizing pipe DZ1 is in parallel with resistance R33 and electric capacity C21;
Electric capacity C22 and C23 is in parallel with bi-directional voltage stabilizing pipe DZ1 after connecting;
Inductance L 2 is connected between resistance R33 and bi-directional voltage stabilizing pipe DZ1;
Inductance L 4 is connected with electric capacity L2;
When power tube Q3, Q4, Q5, Q6 conducting, power supply energy by transformer T1, fast recovery diode D10 and D11 to secondary load export energy, and in inductance L 2 storage power;
When power tube Q3, Q4, Q5, Q6 close, the energy be stored in inductance L 2 exports energy by fast recovery diode D12, D13, D14, D15 continuously to load;
Described resistance R32 and electric capacity C20, resistance R33 and electric capacity C21 form RC uptake pathway respectively, work reliably for the protection of fast recovery diode D10, D11, D12, D13, D14 and D15; Described bi-directional voltage stabilizing pipe DZ1 is used for protecting fast recovery diode not breakdown; Described electric capacity C22 and C23 is used for suppressing to export interference, and energy smooth output voltage, make the ripple of output voltage less; Described inductance L 4 is used for producing high pressure in output loop, realizes the high-voltage arc strike of argon arc welding.
3. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 2 and stability, is characterized in that, described transformer T1 adopts high frequency transformer; Described inductance L 4 adopts high-frequency arc strike inductance.
4. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 2 and stability, is characterized in that, described output loop arc static circuit comprises: electric capacity C59 and switch RL8B; Wherein:
Described electric capacity C59 and switch RL8B is parallel between bi-directional voltage stabilizing pipe DZ1 and electric capacity C22 and C23 after connecting.
5. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 4 and stability, it is characterized in that, described switch RL8B is controlled by control circuit, and described control circuit comprises: control panel, amplifier U5B, amplifier U5A, optocoupler U4, triode Q26 and switch RL8A; Wherein:
The signal output part of described control panel is connected with the input of amplifier U5B;
The output of described amplifier U5B is connected with the input of amplifier U5A;
The output of described amplifier U5A is connected with optocoupler U4 and triode Q26 respectively;
Described triode Q26 is connected with switch RL8A.
6. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 5 and stability, is characterized in that, described switch RL8A forms the coiler part of switch RL8, and described switch RL8B forms the switch contact part of switch RL8.
7. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 5 and stability, is characterized in that, the control mode of described control circuit is:
Welding machine is under arc welding state, and electric capacity C59 does not work;
Welding machine is under argon arc welding state:
During-small area analysis, electric capacity C59 works always;
During-big current, electric capacity C59 only works instantaneously in striking, does not work in welding process.
8. the circuit of raising inverter argon arc welding machine small area analysis arcing initiation success rate according to claim 7 and stability, it is characterized in that, described small area analysis and big current are determined in the following manner:
Small area analysis is defined as during output current≤15A;
Big current is defined as during output current > 15A.
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| CN106216810A (en) * | 2016-08-09 | 2016-12-14 | 上海广为焊接设备有限公司 | The high-voltage arc ignition circuit of Width funtion input argon arc welding machine |
| CN106392387A (en) * | 2016-01-27 | 2017-02-15 | 上海广为焊接设备有限公司 | Multifunctional welding circuit of double-tube single-ended forward inverter welding machine |
| CN107627009A (en) * | 2016-07-18 | 2018-01-26 | 上海沪工焊接集团股份有限公司 | Welding machine arc stabilizer |
| CN107931782A (en) * | 2017-12-18 | 2018-04-20 | 深圳市佳士科技股份有限公司 | Arc ignition circuit and AC-DC argon arc welding machine |
| CN113399782A (en) * | 2021-05-31 | 2021-09-17 | 深圳市佳士科技股份有限公司 | Arc striking circuit and electric welding machine |
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| CN106392387A (en) * | 2016-01-27 | 2017-02-15 | 上海广为焊接设备有限公司 | Multifunctional welding circuit of double-tube single-ended forward inverter welding machine |
| CN106392387B (en) * | 2016-01-27 | 2019-01-18 | 上海广为焊接设备有限公司 | Two-tube single-ended forward type inverter type welder realizes the circuit of multi-functional welding |
| CN107627009A (en) * | 2016-07-18 | 2018-01-26 | 上海沪工焊接集团股份有限公司 | Welding machine arc stabilizer |
| CN107627009B (en) * | 2016-07-18 | 2020-06-30 | 上海沪工焊接集团股份有限公司 | Arc stabilizer of welder |
| CN106216810A (en) * | 2016-08-09 | 2016-12-14 | 上海广为焊接设备有限公司 | The high-voltage arc ignition circuit of Width funtion input argon arc welding machine |
| CN106216810B (en) * | 2016-08-09 | 2018-07-20 | 上海广为焊接设备有限公司 | Width funtion inputs the high-voltage arc ignition circuit of argon arc welding machine |
| CN107931782A (en) * | 2017-12-18 | 2018-04-20 | 深圳市佳士科技股份有限公司 | Arc ignition circuit and AC-DC argon arc welding machine |
| CN107931782B (en) * | 2017-12-18 | 2019-10-22 | 深圳市佳士科技股份有限公司 | Arc ignition circuit and AC-DC argon arc welding machine |
| CN113399782A (en) * | 2021-05-31 | 2021-09-17 | 深圳市佳士科技股份有限公司 | Arc striking circuit and electric welding machine |
| CN113399782B (en) * | 2021-05-31 | 2023-03-28 | 深圳市佳士科技股份有限公司 | Arc striking circuit and electric welding machine |
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