CN103182582A - Micro arc spot welding power supply and micro arc spot welding method - Google Patents
Micro arc spot welding power supply and micro arc spot welding method Download PDFInfo
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- CN103182582A CN103182582A CN2013101167002A CN201310116700A CN103182582A CN 103182582 A CN103182582 A CN 103182582A CN 2013101167002 A CN2013101167002 A CN 2013101167002A CN 201310116700 A CN201310116700 A CN 201310116700A CN 103182582 A CN103182582 A CN 103182582A
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Abstract
The invention discloses a micro arc spot welding power supply. The micro arc spot welding power supply comprises a main circuit for outputting high-frequency power to a welding gun, a digital signal processing (DSP) controller, and a current sampling circuit and a voltage sampling circuit which are connected to the output ends of the DSP controller and the main circuit respectively; the current sampling circuit is used for acquiring the current value output by the main circuit to obtain a feedback current and outputting the feedback current to the DSP controller; the voltage sampling circuit is used for acquiring the voltage value output by the main circuit to obtain a feedback voltage and outputting the feedback voltage to the DSP controller; and the DSP controller is used for controlling and adjusting the duty ratio of pulse width modulation (PWM) signals according to the set first current value, the feedback current and the feedback voltage and outputting the PWM signals to control the current output by the main circuit. By adopting the power supply, the melting quantity of workpieces is accurately controlled. The control precision of the power supply is high, and formed joints are uniform, beautiful and high in consistency. In addition, the invention also provides a micro arc spot welding method for overcoming the defects that the quality of the welded joints is instable and the outer parts of the welded joints are not smooth enough.
Description
Technical field
The present invention relates to the arc welding technology field, particularly relate to a kind of micro-arc spot welding power supply and micro-arc spot welding method.
Background technology
High speed development along with most advanced branches of science technology such as the development of miniaturization of electronic products, microminiaturization, high performance and space flight and aviation, welding quality and performance requirement to various micro parts are also more and more higher, and improving welding precision has been the key of some small product manufacturing successes.
The precision welding connection technology is according to different welding objects, selects suitable welding method and control technology, welding process is accurately controlled, to realize accurate welding.Precision welding connection technology in the encapsulation of microelectronic device and assembling is called miniature solder technology again, and its main purpose is under the prerequisite that obtains reliable joint performance, pursues high as far as possible connection precision.
Traditional micro-arc spot welding technology, can't recognize the fusing amount of workpiece, and because the putting position of workpiece original state all is different generally speaking, therefore, the electric current of micro-arc spot welding power supply output can not reflect the actual fusing amount situation of workpiece, causes the welding effect fluctuation bigger, and control accuracy is low, make that the joint inside of welding is not firm, external shape is not sufficiently oily.
Summary of the invention
Based on this, be necessary to provide micro-arc spot welding power supply and the micro-arc spot welding method that a kind of welding effect is better, control accuracy is higher.
A kind of micro-arc spot welding power supply comprises: be used for the output high frequency electric source to main circuit, the dsp controller of welding gun and be connected to described dsp controller and current sampling circuit and the voltage sampling circuit of main circuit output;
The current value acquisition feedback current that described current sampling circuit is gathered described main circuit output exports described dsp controller to;
The magnitude of voltage acquisition feedback voltage that described voltage sampling circuit is gathered described main circuit output exports described dsp controller to;
Described dsp controller is used for the dutycycle of pwm signal being controlled to adjust, and exporting the electric current that described pwm signal is controlled described main circuit output according to first current value of setting and described feedback current, feedback voltage.
Above-mentioned micro-arc spot welding power supply by adopting current feedback and the feedback system that the voltage feedback combines, controls to adjust welding arc.Carry out FEEDBACK CONTROL according to the current value of setting and feedback current, feedback voltage and regulate, the dutycycle of control pwm signal, and then the control welding current realizes accurately controlling the fusing amount of workpiece to regulate electric arc.Reach the control accuracy height, attractive in appearance, the high conformity of joint uniform in shaping.
A kind of micro-arc spot welding method comprises: the slow liter stage, main welding stage, slow depression of order section, receipts arc stage of arc maintenance stage, electric current;
The described arc maintenance stage: after detecting the striking success, the output current of regulating the micro-arc spot welding power supply is reduced to pilot arc smooth combustion state with electric arc;
Described electric current is slow to be risen the stage: after the time that arc stability burning and preheating are set, in the time of setting with the slow welding current value that rises to the setting of main welding stage of the output current of micro-arc spot welding power supply;
The described main welding stage: the output current with the micro-arc spot welding power supply in welding process remains described welding current value;
Described slow depression of order section: when welding process finished, the output current with the micro-arc spot welding power supply in the time of setting delayed the receipts arc current value of being down to setting;
The described receipts arc stage: in the time of setting, reduce to zero again behind the output current maintenance setting-up time with the micro-arc spot welding power supply.
Above-mentioned micro-arc spot welding method, the slow stage of rising of electric current has been realized the smooth transition of electric current from the arc maintenance stage to main welding process, the ripple vibration of having avoided electric current to skyrocket bringing, simultaneously, electric current slowly increases makes fusion gradually after the solder joint preheating, the moulding that is conducive to melt, receive the arc stage and realize that main welding current slowly is reduced to back ground current, welding is seamlessly transitted, the weld defect of avoiding bad receipts arc guide to cause, the main welding stage is the main energy input process of micro-arc spot welding, can control main weld interval flexibly according to the material difference of actual welding, make the complete molten adhere of material, reach good welding effect, avoid the quality of weld joint instability, external shape is level and smooth defective inadequately.
Description of drawings
Fig. 1 is the structural representation of the micro-arc spot welding power supply of an embodiment;
Fig. 2 is the structural representation of the micro-arc spot welding power supply of a preferred embodiment;
Fig. 3 is the schematic diagram of a micro-arc spot welding power supply control mode;
Fig. 4 changes schematic diagram for arc length
Fig. 5 is the electric current process schematic diagram that an electric current is the given embodiment of direct current;
Fig. 6 is a welding process electric current output waveform figure
Fig. 7 is the electric current process schematic diagram that an electric current is the given embodiment of DC pulse;
The specific embodiment
Be described in detail below in conjunction with the specific embodiment of accompanying drawing to micro-arc spot welding power supply of the present invention.
Fig. 1 shows the structural representation of the micro-arc spot welding power supply of an embodiment, comprising: be used for the output high frequency electric source to main circuit, the dsp controller of welding gun and be connected to described dsp controller and current sampling circuit and the voltage sampling circuit of main circuit output.
The current value acquisition feedback current that described current sampling circuit is gathered described main circuit output exports described dsp controller to.
The magnitude of voltage acquisition feedback voltage that described voltage sampling circuit is gathered described main circuit output exports described dsp controller to.
Described dsp controller is used for the dutycycle of pwm signal being controlled to adjust, and exporting the electric current that described pwm signal is controlled described main circuit output according to first current value of setting and described feedback current, feedback voltage.
The pwm signal of the 100kHz that described control module is used for producing corresponding dutycycle according to default parameter and feedback parameter exports described PWM drive circuit to.
The micro-arc spot welding power supply of present embodiment is made of the feedback control system of power supply current sampling circuit, voltage sampling circuit, dsp controller and main circuit.By the feedback system that adopts current feedback to combine with the voltage feedback, corresponding control strategy, the dutycycle of the pwm signal of adjustment output makes electric arc precisely controlled, reaches the fusing amount of accurate control workpiece and the purpose that joint is shaped.
In one embodiment, describedly comprise as follows according to first current value of setting and described feedback current, feedback voltage to the process that the dutycycle of pwm signal controls to adjust:
A, first current value that reads setting and feedback current, the feedback voltage under the original state.
B, calculate arc length under the original state according to described feedback voltage.
C, calculate arc power in the welding process according to described feedback current, feedback voltage; Concrete, establishing arc power is P, feedback current is that I, feedback voltage are U, then P=UI.
D, compensate computing according to the variable quantity of described arc power and described arc length and obtain second current value.
E, according to described feedback current with carry out the dutycycle of the described second current value adjustment pwm signal; Particularly, calculate the deviation of described second current value and feedback current, calculate controlled quentity controlled variable, the dutycycle of regulating described pwm signal according to described controlled quentity controlled variable according to described deviation.
The control and regulation method of above-described embodiment, variation that can the real-time identification arc length in welding process, situation according to welding, with the foundation of arc length variable quantity as fusing control, the variation that workpiece is placed can effectively be compensated, particularly to the situation of the line end welding of widely applying, the situation that terminal ends and placement location are difficult to be consistent can effectively be controlled the fusing amount of welding by this method.
Referring to shown in Figure 2, Fig. 2 is the structural representation of the micro-arc spot welding power supply of a preferred embodiment.
The main circuit of micro-arc spot welding power supply comprises: the PWM drive circuit of Lian Jieing, inverter circuit, high frequency transformer and first current rectifying and wave filtering circuit successively; Inverter circuit connects dc source, and described PWM drive circuit inserts the pwm signal of described dsp controller output, and first current rectifying and wave filtering circuit connects described welding gun.
The micro-arc spot welding power supply of present embodiment, the dc source of input obtains high-frequency alternating current through inverter circuit, after the high frequency transformer step-down, obtain direct current or the dc pulse current of low-voltage, big electric current again by the processing of first current rectifying and wave filtering circuit, offer welding gun and excite the required current source of electric arc.
Change resolution ratio in order to obtain higher arc voltage, described voltage sampling circuit can design special signal conditioning circuit and nurse one's health, the first current rectifying and wave filtering circuit output loop voltage is through behind the buffer circuit, adopt the level biasing circuit to remove basic arc voltage, obtain bigger dynamic electric voltage excursion through further amplifying again, thereby improve the resolution ratio that arc voltage detects.
Further, main circuit also comprises: connect second current rectifying and wave filtering circuit of described inverter circuit, be used for alternating current with electrical network and carry out rectification and filtering and obtain dc source and export described inverter circuit to.
Second current rectifying and wave filtering circuit is input as single-phase 50Hz, the 220V civil power, behind four diode rectifications of power rectifier, obtain DC voltage, obtain more level and smooth DC voltage through filter capacitor again and supply with inverter circuit, preferably, filter capacitor can adopt the electrochemical capacitor of 470uF/450V, the other parallel resistance of electric capacity, when down circuitry, provide discharge circuit by resistance and electric capacity.
Further, the micro-arc spot welding power supply also comprises keyboard and the LCD display that is connected with described dsp controller respectively; Wherein, described keyboard be used for to set welding current, weld interval, welding slow rises time, welding slow fall the time and in advance, parameter such as delay duration of ventilation; Described LCD display is used for showing the pre-set parameter of input, and shows welding current in real time.
Further, the micro-arc spot welding power supply also comprises the failure detector circuit that connects dsp controller, is used for that described dsp controller is carried out overheated detection, over-current detection and net and presses abnormality detection.The micro-arc spot welding power supply of present embodiment can adopt the dsPIC33FGS610 chip of Microchip company; Feedback current, feedback voltage at first carry out ADC and convert data signal to behind the input dsp controller, and then carry out digitalization operation at a high speed and handle.The control output that calculation process obtains, the frequency that produces corresponding dutycycle by the built-in PWM module of DSP is the two-way pwm signal of 100kHz, isolates through overdrive circuit and amplifies the full bridge inverter that the rear drive power MOSFET is formed.
Further, the micro-arc spot welding power supply also comprises the high-frequency arc ignition circuit that is connected between first current rectifying and wave filtering circuit and the welding gun.When striking, described DSP controls described arc ignition control circuit and connects, and described high-frequency arc ignition circuit is used for striking to described first current rectifying and wave filtering circuit output loop output high-frequency and high-voltage.Electric arc ignite and reach stable after, described dsp controller is controlled described arc ignition control circuit and is turn-offed, described high-frequency arc ignition circuit stops to export high-frequency and high-voltage.
The micro-arc spot welding power supply of present embodiment also comprises keyboard and the LCD display that is connected with described control module respectively.Described keyboard be used for to be set slow slow time and logical protection gas, the delay in advance equal time parameter of dying of falling of time, welding that rises of welding current, pulse current frequency, pulse current base value, pulse peak current dutycycle, weld interval, welding.Described LCD display is used for showing the pre-set parameter of input, and shows each stage welding current value etc. in real time.
Can realize input and the demonstration of parameter in the welding process by LCD display and button.In addition, control module can also can realize carrying out exchanges data with host computer by RS232, comprises that parameter is set, welding data sends host computer etc. to.
The micro-arc spot welding power supply of present embodiment can also comprise the failure detector circuit of link control module, is used for the power circuit of described power supply is carried out overheated detection, over-current detection and line voltage abnormality detection.
Among the present invention, the control and regulation process of feedback current constitutes the interior ring of control of current feedback, the control arc current is reference value with second current value, calculate the deviation of feedback current and second current value, calculate compensation rate based on pid algorithm, regulate the dutycycle control inverter circuit of output pwm signal, the inverter circuit operating frequency is 100kHz, the pwm signal frequency can be set at 100kHz, duty cycle adjustment resolution ratio 1/4800.Utilize the performance advantage of dsp controller, the control cycle of this feedback control loop is 1 inversion cycle, and namely in the 10 μ s, system responses is quick, and current stability can be effectively controlled.
In actual applications, the micro-arc spot welding power supply adopts Current Feedback Control, only can keep the arc stability burning, and owing to be subjected to the influence that workpiece is placed, workpiece melts and operates, arc length is not fixed amount, and line end welding effect is undesirable, particularly the situation that the little electric arc of finding is used, the inconsistent fusing amount that causes of arc length has notable difference, and the shaping of solder joint differs greatly.
In order to control the fusing amount, the present invention's cyclic group plinth in Current Control has been introduced based on dynamic prediction control outer shroud, and referring to shown in Figure 3, Fig. 3 is the schematic diagram of feedback processing process.
Particularly, arc voltage and arc current, arc length, arc channel are relevant, under the condition of current constant, and arc voltage reaction arc length.
Referring to shown in Figure 4, Fig. 4 for when welding workpiece placement location and the schematic diagram after the fusing, the electrode of welding gun and the distance between the workpiece are L under original state, because workpiece is placed not necessarily identical during each welding, therefore, the voltage of electric arc also is different under the original state; If Δ L is the fusing amount of workpiece reality, then in welding process, along with the variation of Δ L, so the voltage of electric arc also changes.
The Current Control process of micro-arc spot welding power supply of the present invention, can be after striking success, the stable section of a less electric current under the original state is at first measured the voltage and current of electric arc, calculate the initial arc length of electric arc according to arc voltage, and calculate the arc power under the original state.
Computational methods for arc length, as a kind of embodiment, can be at first the distance of tungsten electrode and workpiece be set at fixing length, press ladder control electric current, obtain corresponding arc voltage curve, change arc length to another fixed value, repeat said process, obtain the arc voltage curve map, in actual applications, extract the arc characteristic parameter acquiring to corresponding arc length by dsp controller.
The arc length that the welding incipient stage obtains has been reacted the situation that workpiece is placed, the situation bigger than normal or less than normal to arc length, arc power changes, correspondingly, carry out the transition to the welding stage of big electric current at electric arc after, variable quantity according to arc length compensates computing, correspondingly first current value is reduced by variable quantity or increases to obtain second current value, makes the speed of fusing obtain corresponding control.
In the melting stage of welding, gathering way of arc length also is burn-off rate, compensates computing according to the variation delta L of arc length, correspondingly to first current value I
1Reduce or increase to obtain second current value I by variable quantity
2, reaching the control to melting rate, L reaches certain value at arc length recruitment Δ, and system enters to be received the arc stage.
Be described in detail below in conjunction with the specific embodiment of accompanying drawing to micro-arc spot welding method of the present invention.
Micro-arc spot welding method of the present invention can realize that this method mainly comprises based on micro-arc spot welding power supply of the present invention: the slow liter stage, main welding stage, slow depression of order section, receipts arc stage of starting the arc stage, electric current.
The described arc maintenance stage: after detecting the striking success, the output current of regulating the micro-arc spot welding power supply is reduced to pilot arc smooth combustion state with electric arc.
Described electric current is slow to be risen the stage: after the time that arc stability burning and preheating are set, in the time of setting with the slow welding current value that rises to the setting of main welding stage of the output current of micro-arc spot welding power supply.
The described main welding stage: the output current with the micro-arc spot welding power supply in welding process remains described welding current value.
Described slow depression of order section: when welding process finished, the output current with the micro-arc spot welding power supply in the time of setting delayed the receipts arc current value of being down to setting.
The described receipts arc stage: in the time of setting, reduce to zero again behind the output current maintenance setting-up time with the micro-arc spot welding power supply.
Because the micro-arc spot welding process is to utilize hf arc starter to carry out striking, hf arc starter output high-frequency and high-voltage, long-term existence can be to system and is caused interference on every side, the micro-arc spot welding method of present embodiment, after detecting the striking success, make electric arc reach the arc maintenance state rapidly by the electric current adjusting, delay the current value when being raised to main the welding behind arc stability burning and the preheating certain hour, enter main welding process then, enter after main welding finishes that electric current is slow to fall process, be reduced to receive arc current after the time-delay certain hour finish.
The slow stage of rising of electric current has been realized the smooth transition of electric current from the arc maintenance stage to main welding process, the ripple vibration of having avoided electric current to skyrocket bringing, simultaneously, electric current slowly increases makes fusion gradually after the solder joint preheating, the moulding that is conducive to melt, receive the arc stage and realize that main welding current slowly is reduced to back ground current, welding is seamlessly transitted, the weld defect of avoiding bad receipts arc guide to cause, the main welding stage is the main energy input process of micro-arc spot welding, according to the material difference of actual welding, controls main weld interval flexibly, finish after making the material melted join, can reach good welding effect.
By above-mentioned micro-arc spot welding method, inner firm, external shape level and smooth defective inadequately in can avoiding welding.
As shown in Figure 5, Fig. 5 is the electric current process schematic diagram that an electric current is the given embodiment of direct current, and particularly, the micro-arc spot welding method is as follows:
Described aeration stage t in advance
1: when starting welding, at first control electromagnetic gas valve, protective gas is led to welding region by torch neck, can effectively get rid of the pernicious gas of gas passage and welding region.
Described arc maintenance stage t
2: ventilation in advance finishes namely to control arc ignition circuit and main circuit work, and after detecting the striking success, the output current of control micro-arc spot welding power supply is to set-point i
1Pilot arc smooth combustion state is in the initial arc length of this phase measuring.
The slow stage t that rises of described electric current
3: after arc stability burnt and reaches the time of test purpose and preheating setting, the output current with the micro-arc spot welding power supply in the time of setting delayed the welding current value i that rises to the main welding stage
2
Described main welding stage t
4: the output current with the micro-arc spot welding power supply in welding process remains described welding current value i
2, finish after reaching suitable fusing amount.
Described slow depression of order section t
5: when welding process finished, the output current with the micro-arc spot welding power supply in the time of setting delayed the receipts arc current value i that is down to setting
3
Described receipts arc stage t
6: in the time of setting, the output current of micro-arc spot welding power supply is maintained i
3And keep the regular hour.
The described delay stage t that dies
7: continue behind the arc extinction to keep protective gas a period of time, make joint not oxidized at the hot stage of cooling procedure, time-delay finishes back tripping protection gas.
Above-mentioned t
1-t
7Time is set by millisecond (ms), and electric current is pressed the resolution setting of 0.1A, utilizes the advantage of dsp controller, has realized the accurate control of time and electric current, has effectively improved the control accuracy of electric arc.
In order to make molten metal form the spherical of even slyness, be provided with electric current in ending phase and reduce to the process that certain value is kept certain hour more gradually.When arc current was big, bigger arc force acted directly on and makes the deposite metal be out of shape on the deposite metal, and stop electric arc this moment suddenly, and the deposite metal is solidified too fast, has little time to get back to nature, and the solder joint distortion of formation is serious, and uniformity is poor.And by above-mentioned illustrated current attenuation and back ground current, when parameter arranges when suitable, reduce setting rate on the one hand, the deposite metal is returned to the spherical state near nature under surface tension effects, on the other hand, the active force of little arc current reduces, and the deposite metal distortion reduces, and can efficient recovery be arranged in the short period after electric arc is removed.
Referring to shown in Figure 6, Fig. 6 is a welding process electric current output waveform figure, and this waveform corresponding parameters is set to:
Arc maintenance stage electric current is 9.0A, and the time in arc maintenance stage is 50ms: slow to rise the time in stage be 50ms; Main welding stage electric current is 30.0A, and the main time in welding stage is 300ms; The slow depression of order section time is 50ms; Receiving arc stage electric current is 9.0A, and receiving the time in arc stage is 50ms.
Referring to shown in Figure 7, Fig. 7 is the electric current process schematic diagram that an electric current is the given embodiment of DC pulse.
The control thought of DC pulse and DC control basically identical, the background current of each pulse is consistent, peak point current then arranges rule control according to electric current, same, the method of circular current control outer shroud PREDICTIVE CONTROL in each stage peak point current adopts, background current plays the arc maintenance effect, only adopts Current Feedback Control.
To the situation of DC pulse output, given pulse frequency, pulse duty factor and the background current of also comprising of parameter.Frequency setting is that 0-500Hz, dutycycle are set 0-99%, and background current is purpose with pilot arc smooth combustion, sets resolution ratio 0.1A.System of the present invention adopts high-frequency inversion, and the various parameter control accuracies of pulse are higher.
The dc pulse current waveform is more effective to the heating law of control electric arc, and the workpiece that size is big slightly is fit to adopt pulse current waveform.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of 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.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a micro-arc spot welding power supply is characterized in that, comprising: be used for the output high frequency electric source to main circuit, the dsp controller of welding gun and be connected to described dsp controller and current sampling circuit and the voltage sampling circuit of main circuit output;
The current value acquisition feedback current that described current sampling circuit is gathered described main circuit output exports described dsp controller to;
The magnitude of voltage acquisition feedback voltage that described voltage sampling circuit is gathered described main circuit output exports described dsp controller to;
Described dsp controller is used for the dutycycle of pwm signal being controlled to adjust, and exporting the electric current that described pwm signal is controlled described main circuit output according to first current value of setting and described feedback current, feedback voltage.
2. micro-arc spot welding power supply according to claim 1 is characterized in that, describedly according to first current value of setting and described feedback current, feedback voltage the process that the dutycycle of pwm signal controls to adjust is comprised:
Read first current value of setting and feedback current, the feedback voltage under the original state;
According to the arc length under the described feedback voltage calculating original state;
Calculate the arc power in the welding process according to described feedback current, feedback voltage;
Compensate computing according to the variable quantity of described arc power and described arc length and obtain second current value;
According to described feedback current and the dutycycle of carrying out the described second current value adjustment pwm signal.
3. micro-arc spot welding power supply according to claim 2 is characterized in that, describedly comprises according to described feedback current and the process of carrying out the dutycycle of the described second current value adjustment pwm signal:
Calculate the deviation of described second current value and feedback current;
Calculate controlled quentity controlled variable according to described deviation;
Regulate the dutycycle of described pwm signal according to described controlled quentity controlled variable.
4. micro-arc spot welding power supply according to claim 1 is characterized in that, described main circuit comprises: the PWM drive circuit of Lian Jieing, inverter circuit, high frequency transformer and first current rectifying and wave filtering circuit successively;
Described inverter circuit connects dc source, and described PWM drive circuit inserts the pwm signal of described dsp controller output, and first current rectifying and wave filtering circuit connects described welding gun.
5. micro-arc spot welding power supply according to claim 1, it is characterized in that, described main circuit also comprises: connect second current rectifying and wave filtering circuit of described inverter circuit, be used for alternating current with electrical network and carry out rectification and filtering and obtain dc source and export described inverter circuit to.
6. micro-arc spot welding power supply according to claim 1 is characterized in that, also comprises the keyboard and the LCD display that are connected with described dsp controller respectively;
Described keyboard be used for to set welding current, weld interval, welding slow rises time, welding slow fall the time and in advance, parameter such as delay duration of ventilation;
Described LCD display is used for showing the pre-set parameter of input, and shows welding current in real time.
7. micro-arc spot welding power supply according to claim 1 is characterized in that, also comprises the failure detector circuit that connects dsp controller, is used for that described dsp controller is carried out overheated detection, over-current detection and net and presses abnormality detection.
8. a micro-arc spot welding method is characterized in that, comprising: the slow liter stage, main welding stage, slow depression of order section, receipts arc stage of arc maintenance stage, electric current;
The described arc maintenance stage: after detecting the striking success, the output current of regulating the micro-arc spot welding power supply is reduced to pilot arc smooth combustion state with electric arc;
Described electric current is electric to be risen the stage: after the time of arc stability burning and preheating setting, the output current with the micro-arc spot welding power supply in the time of setting delays the welding current value that rises to the setting of main welding stage;
The described main welding stage: the output current with the micro-arc spot welding power supply in welding process remains described welding current value;
Described slow depression of order section: when welding process finished, the output current with the micro-arc spot welding power supply in the time of setting delayed the receipts arc current value of being down to setting;
The described receipts arc stage: in the time of setting, reduce to zero again behind the output current maintenance setting-up time with the micro-arc spot welding power supply.
9. micro-arc spot welding method according to claim 8 is characterized in that, also comprises aeration stage in advance before the stage at described arc maintenance: when starting welding, at first control electromagnetic gas valve, protective gas is led to welding region by torch neck;
After the described receipts arc stage, also comprise and postpone to die the stage: behind arc extinction, continue to keep one section setting-up time of protective gas.
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| CN106956061A (en) * | 2017-04-25 | 2017-07-18 | 南通市慧冠智能科技有限公司 | Source of welding current power output changes acts closed loop control method with arc welding robot |
| CN108202177A (en) * | 2016-12-19 | 2018-06-26 | 上海沪工焊接集团股份有限公司 | Gas shielded arc welding striking control method and device |
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| CN110722248A (en) * | 2019-10-21 | 2020-01-24 | 深圳市佳士科技股份有限公司 | Arc-closing control circuit, control system and arc-closing control method of welding machine |
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| CN111360365A (en) * | 2020-03-31 | 2020-07-03 | 贵州大学 | Micro-arc spot welding control system |
| CN111390342A (en) * | 2020-04-23 | 2020-07-10 | 欧地希机电（青岛）有限公司 | Welding power supply with arc voltage automatic compensation |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201353676Y (en) * | 2008-11-19 | 2009-12-02 | 上海沪工电焊机制造有限公司 | TIG welding power supply closed-loop fuzzy control system |
| CN202317370U (en) * | 2011-11-02 | 2012-07-11 | 温岭万顺机电制造有限公司 | Full digital inverter welding machine |
-
2013
- 2013-04-03 CN CN201310116700.2A patent/CN103182582B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201353676Y (en) * | 2008-11-19 | 2009-12-02 | 上海沪工电焊机制造有限公司 | TIG welding power supply closed-loop fuzzy control system |
| CN202317370U (en) * | 2011-11-02 | 2012-07-11 | 温岭万顺机电制造有限公司 | Full digital inverter welding machine |
Non-Patent Citations (3)
| Title |
|---|
| 庞清乐、王永强: ""基于模糊和PI控制的MIG焊接电源设计"", 《控制工程》 * |
| 熊振兴、黄石生: ""现代数字化弧焊电源的发展"", 《电焊机》 * |
| 黄石生: "《弧焊电源及其数字化控制》", 31 January 2007 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105537728A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Circuit for increasing small current arc striking successful rate and stability of inverter argon arc welding machine |
| CN108202177A (en) * | 2016-12-19 | 2018-06-26 | 上海沪工焊接集团股份有限公司 | Gas shielded arc welding striking control method and device |
| CN106956061A (en) * | 2017-04-25 | 2017-07-18 | 南通市慧冠智能科技有限公司 | Source of welding current power output changes acts closed loop control method with arc welding robot |
| CN109175735A (en) * | 2018-08-09 | 2019-01-11 | 北京长城华冠汽车科技股份有限公司 | Battery modules Laser Welding Quality appraisal procedure and device |
| CN110722248A (en) * | 2019-10-21 | 2020-01-24 | 深圳市佳士科技股份有限公司 | Arc-closing control circuit, control system and arc-closing control method of welding machine |
| CN111230258A (en) * | 2020-03-02 | 2020-06-05 | 广州市精源电子设备有限公司 | Inverter type arc welding power supply, arc welding control method and arc spot welding method |
| CN111360365A (en) * | 2020-03-31 | 2020-07-03 | 贵州大学 | Micro-arc spot welding control system |
| CN111360365B (en) * | 2020-03-31 | 2022-04-26 | 贵州大学 | Micro-arc spot welding control system |
| CN111390342A (en) * | 2020-04-23 | 2020-07-10 | 欧地希机电（青岛）有限公司 | Welding power supply with arc voltage automatic compensation |
| CN114871620A (en) * | 2022-05-25 | 2022-08-09 | 西南交通大学 | Thick plate welding quality monitoring and control system and welding method thereof |
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