CN204530005U - Constant current voltage limiting differential arc oxidation pilot circuit - Google Patents
Constant current voltage limiting differential arc oxidation pilot circuit Download PDFInfo
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- CN204530005U CN204530005U CN201520060075.9U CN201520060075U CN204530005U CN 204530005 U CN204530005 U CN 204530005U CN 201520060075 U CN201520060075 U CN 201520060075U CN 204530005 U CN204530005 U CN 204530005U
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Abstract
The utility model discloses a kind of constant current voltage limiting differential arc oxidation pilot circuit, it comprises forward output circuit, reverse output circuit, forward full-controlled bridge regulator rectifier circuit, reverse full-controlled bridge regulator rectifier circuit, forward rectifying and wave-filtering sensing circuit, reverse rectifying and wave-filtering sensing circuit and semibridge system single-phase inversion circuit, forward output circuit is connected with the input terminus of forward full-controlled bridge regulator rectifier circuit, the output terminal of forward full-controlled bridge regulator rectifier circuit is connected with the input terminus of forward rectifying and wave-filtering sensing circuit, reverse output circuit is connected with the input terminus of reverse full-controlled bridge regulator rectifier circuit, the output terminal of reverse full-controlled bridge regulator rectifier circuit is connected with the input terminus of reverse rectifying and wave-filtering sensing circuit, forward rectifying and wave-filtering sensing circuit output terminal is connected with semibridge system single-phase inversion circuit respectively with the output terminal of reverse rectifying and wave-filtering sensing circuit.The utility model with improve micro-arc oxidation process automatization processing treatment level, ensure that the quality of processing work.
Description
Technical field
The utility model relates to a kind of Energy control technology, specifically constant current voltage limiting differential arc oxidation pilot circuit.
Background technology
Arc oxidation technology is a kind of new technology generating ceramic membrane at valve metal surface in situ such as Al, Mg and Ti.This Technology can make surface of workpiece generate the extremely hard ceramic-like material of one deck, makes the performances such as wear-resisting, high temperature resistant, the acid-alkali-corrosive-resisting of workpiece surface improve decades of times.Positive and negative asymmetrical power supply is the key equipment realizing micro-arc oxidation process, and its function is in micro-arc oxidation process, the automatic detection and control producing pulsed electrical field and realize the parameter in working process.In the research of current differential arc oxidization technique and the field of utilization, be all adopt to set the parameter such as forward voltage, reverse voltage, forward current, reversible circulation, direct impulse, reverse impulse, frequency, dutycycle of mao power source; The form that mao power source mode of operation (constant current or voltage stabilizing) is chosen is carried out, do not have the electrical control demand of the whole micro-arc oxidation process of overall thinking, its electric control method and strategy cannot meet the occasion of in batch valve metals such as Al, Mg and Ti being carried out to the processing of automatization differential arc oxidation.
Utility model content
The utility model, in order to overcome the deficiencies in the prior art, provides a kind of constant current voltage limiting differential arc oxidation pilot circuit.
For achieving the above object, the technical solution adopted in the utility model is: comprise forward output circuit, reverse output circuit, forward full-controlled bridge regulator rectifier circuit, reverse full-controlled bridge regulator rectifier circuit, forward rectifying and wave-filtering sensing circuit, reverse rectifying and wave-filtering sensing circuit and semibridge system single-phase inversion circuit, forward output circuit is connected with the input terminus of forward full-controlled bridge regulator rectifier circuit, the output terminal of forward full-controlled bridge regulator rectifier circuit is connected with the input terminus of forward rectifying and wave-filtering sensing circuit, reverse output circuit is connected with the input terminus of reverse full-controlled bridge regulator rectifier circuit, the output terminal of reverse full-controlled bridge regulator rectifier circuit is connected with the input terminus of reverse rectifying and wave-filtering sensing circuit, forward rectifying and wave-filtering sensing circuit output terminal is connected with semibridge system single-phase inversion circuit respectively with the output terminal of reverse rectifying and wave-filtering sensing circuit.
Further, described forward output circuit and reverse output circuit comprise isolating switch ZK, three volume rectifier transformer ZLB and quick-acting fuses respectively.
Further, described forward rectifying and wave-filtering sensing circuit comprises electric capacity 1C, resistance 1R, voltage sensor 1V, current sensor 100A/75mV, is formed again be connected in series after electric capacity 1C, resistance 1R, voltage sensor 1V parallel connection with current sensor 100A/75mV.
Further, described reverse rectifying and wave-filtering sensing circuit comprises electric capacity 2C, resistance 2R, voltage sensor 2V, current sensor 75A/75mV, is formed again be connected in series after electric capacity 2C, resistance 2R, voltage sensor 2V parallel connection with current sensor 75A/75mV.
Further, described semibridge system single-phase inversion circuit comprises IGBT switching element T 1, T2 and derided capacitors C1, C2.
The utility model has following beneficial effect: the electrical control problem solving whole micro-arc oxidation process on the whole, its control strategy runs through the process such as wave setting, the starting the arc, coating growth, blow-out of micro-arc oxidation process, improve micro-arc oxidation process automatization processing treatment level, ensure that the quality of processing work.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is schematic circuit of the present utility model.
Fig. 2 is output waveform figure of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the utility model comprises isolating switch ZK, three volume rectifier transformer ZLB, quick-acting fuse 1RD1,1RD2,1RD3,2RD1,2RD2,2RD3, forward full-controlled bridge regulator rectifier circuit 1, oppositely full-controlled bridge regulator rectifier circuit 3, forward rectifying and wave-filtering sensing circuit 2, oppositely rectifying and wave-filtering sensing circuit 4 and semibridge system single-phase inversion circuit 5 form.Quick-acting fuse 1RD1, 1RD2, 1RD3 connects forward full-controlled bridge regulator rectifier circuit 1, quick-acting fuse 2RD1, 2RD2, 2RD3 connects reverse full-controlled bridge regulator rectifier circuit 3, forward full-controlled bridge regulator rectifier circuit 1 is connected to the anode of semibridge system single-phase inversion circuit 5 after the filtering of forward rectifying and wave-filtering sensing circuit 2 and sampling, reverse full-controlled bridge regulator rectifier circuit 3 is connected to the negative electrode of semibridge system single-phase inversion circuit 5 after the filtering of reverse rectifying and wave-filtering sensing circuit 4 and sampling, the negative pole of forward full-controlled bridge regulator rectifier circuit 1 is connected with the positive pole of reverse full-controlled bridge regulator rectifier circuit 3, form votage reference point.
Forward rectifying and wave-filtering sensing circuit 2 comprises electric capacity 1C, resistance 1R, voltage sensor 1V, current sensor 100A/75mV, hold 1C, resistance 1R, formed with current sensor 100A/75mV again after voltage sensor 1V parallel connection and be connected in series, reverse rectifying and wave-filtering sensing circuit 4 comprises electric capacity 2C, resistance 2R, voltage sensor 2V, current sensor 75A/75mV, electric capacity 2C, resistance 2R, formed with current sensor 75A/75mV again after voltage sensor 2V parallel connection and be connected in series, bear filtering and the electric current and voltage acquisition function of forward and reverse rectification respectively, the voltage and current signal gathered transfers to the measurement that main control unit (DSP) carries out power supply, protection and control.
Forward full-controlled bridge regulator rectifier circuit 1 exports the adjustable dc voltage of 0 ~ 600V, reverse full-controlled bridge regulator rectifier circuit 3 exports the adjustable dc voltage of 0 ~ 300V, to adapt to the needs of different capacity and asymmetric output, connect large reactance and RC in parallel of two-way regulator rectifier circuit DC side is ensure DC waveform level and smooth.Semibridge system single-phase inversion circuit 5 employs the semibridge system single-phase inversion circuit be made up of two IGBT switching element T 1, T2 and derided capacitors C1, C2, namely T1, T2 and C1, C2 form single-phase bridge inverter circuit, it is different by voltage rating to be that the volts DS of 600V and 300V converts positive and negative half wave amplitude respectively to, the voltage of alternating current of frequency 0 ~ 10KHz.
As shown in Figure 2, according to the micro-arc oxidation process requirement of workpiece to be machined, the Electrical Control Technology of constant current voltage limiting is adopted to process, before micro-arc oxidation process starts, first set forward current constant current value, reversible circulation constant current value, forward voltage voltage limiting value and inversion waveform, in general, according to the surface-area setting forward current constant current value I1 of workpiece to be machined, value is 4 ~ 6A/dm
2; According to forward current constant current value setting reversible circulation constant current value I2, value is 1/3 of forward current constant current value; Coating growth thickness needed for workpiece to be machined, setting forward voltage voltage limiting value U1, value is: striking voltage≤U1≤forward voltage rating; Frequency needed for workpiece to be machined, setting inversion waveform parameter, as direct impulse number, reverse impulse number and corresponding dutycycle.After setting, start whole micro-arc oxidation process process, sequence of control is introduced into forward and reverse electric current current constant control program, it is mao power source soft start-up process during 0-t1, the t1 moment, forward and reverse electric current arrived current constant control value I1 and I2, and sequence of control carries out current constant control according to I1 and I2 value, and during t1-t2, workpiece to be machined progresses into electrical spark district and arc discharge district, its resistance value constantly increases simultaneously, and correspondingly forward and reverse voltage also constantly rises.When t2 moment forward voltage arrives forward voltage voltage limiting value U1, forward current constant control is converted to forward voltage stabilizing and controls by sequence of control, forward voltage stabilizing sequence of control carries out voltage stabilizing control according to forward voltage voltage limiting value U1, at this moment Reverse Turning Control program is still reversible circulation current constant control, and its set(ting)value is followed forward current value according to ratio (1:3) and carried out current constant control.During t2-t3, workpiece surface arc light weakens gradually, and in the completely dissolve of t3 moment workpiece surface arc light, at this moment mao power source quits work, and whole micro-arc oxidation process all completes.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a constant current voltage limiting differential arc oxidation pilot circuit, it is characterized in that: comprise forward output circuit, reverse output circuit, forward full-controlled bridge regulator rectifier circuit, reverse full-controlled bridge regulator rectifier circuit, forward rectifying and wave-filtering sensing circuit, reverse rectifying and wave-filtering sensing circuit and semibridge system single-phase inversion circuit, forward output circuit is connected with the input terminus of forward full-controlled bridge regulator rectifier circuit, the output terminal of forward full-controlled bridge regulator rectifier circuit is connected with the input terminus of forward rectifying and wave-filtering sensing circuit, reverse output circuit is connected with the input terminus of reverse full-controlled bridge regulator rectifier circuit, the output terminal of reverse full-controlled bridge regulator rectifier circuit is connected with the input terminus of reverse rectifying and wave-filtering sensing circuit, forward rectifying and wave-filtering sensing circuit output terminal is connected with semibridge system single-phase inversion circuit respectively with the output terminal of reverse rectifying and wave-filtering sensing circuit.
2. constant current voltage limiting differential arc oxidation pilot circuit according to claim 1, is characterized in that: described forward output circuit and reverse output circuit comprise isolating switch ZK, three volume rectifier transformer ZLB and quick-acting fuses respectively.
3. constant current voltage limiting differential arc oxidation pilot circuit according to claim 1, it is characterized in that: described forward rectifying and wave-filtering sensing circuit comprises electric capacity 1C, resistance 1R, voltage sensor 1V, current sensor 100A/75mV, formed with current sensor 100A/75mV again after electric capacity 1C, resistance 1R, voltage sensor 1V parallel connection and be connected in series.
4. constant current voltage limiting differential arc oxidation pilot circuit according to claim 1, it is characterized in that: described reverse rectifying and wave-filtering sensing circuit comprises electric capacity 2C, resistance 2R, voltage sensor 2V, current sensor 75A/75mV, formed with current sensor 75A/75mV again after electric capacity 2C, resistance 2R, voltage sensor 2V parallel connection and be connected in series.
5. constant current voltage limiting differential arc oxidation pilot circuit according to claim 1, is characterized in that: described semibridge system single-phase inversion circuit comprises IGBT switching element T 1, T2 and derided capacitors C1, C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060075.9U CN204530005U (en) | 2015-01-28 | 2015-01-28 | Constant current voltage limiting differential arc oxidation pilot circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060075.9U CN204530005U (en) | 2015-01-28 | 2015-01-28 | Constant current voltage limiting differential arc oxidation pilot circuit |
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| CN204530005U true CN204530005U (en) | 2015-08-05 |
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| CN201520060075.9U Expired - Fee Related CN204530005U (en) | 2015-01-28 | 2015-01-28 | Constant current voltage limiting differential arc oxidation pilot circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2635120C1 (en) * | 2017-01-27 | 2017-11-09 | Акционерное общество Научно-исследовательский и конструкторско-технологический институт подвижного состава (АО "ВНИКТИ") | Device for microarc metal and alloy oxidation |
| CN110484953A (en) * | 2019-08-23 | 2019-11-22 | 北京星航机电装备有限公司 | A kind of preparation method of the high anti-corrosion differential arc oxidation film layer of aluminum alloy surface |
| RU2775987C1 (en) * | 2021-06-06 | 2022-07-12 | Юрий Иванович Красников | Apparatus for micro-arc oxidation of products made of metals and alloys |
-
2015
- 2015-01-28 CN CN201520060075.9U patent/CN204530005U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2635120C1 (en) * | 2017-01-27 | 2017-11-09 | Акционерное общество Научно-исследовательский и конструкторско-технологический институт подвижного состава (АО "ВНИКТИ") | Device for microarc metal and alloy oxidation |
| CN110484953A (en) * | 2019-08-23 | 2019-11-22 | 北京星航机电装备有限公司 | A kind of preparation method of the high anti-corrosion differential arc oxidation film layer of aluminum alloy surface |
| RU2775987C1 (en) * | 2021-06-06 | 2022-07-12 | Юрий Иванович Красников | Apparatus for micro-arc oxidation of products made of metals and alloys |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20180128 |