CN103510037B - Heated filament arc spraying apparatus - Google Patents
Heated filament arc spraying apparatus Download PDFInfo
- Publication number
- CN103510037B CN103510037B CN201310473975.1A CN201310473975A CN103510037B CN 103510037 B CN103510037 B CN 103510037B CN 201310473975 A CN201310473975 A CN 201310473975A CN 103510037 B CN103510037 B CN 103510037B
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- output
- ignition tip
- power switch
- Prior art date
- 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.)
- Active
Links
Abstract
The invention provides a kind of heated filament arc spraying apparatus, comprise heated filament spray gun, described heated filament spray gun comprises the first ignition tip and the 3rd ignition tip sent into for the first spraying wire, the second ignition tip sent into for the second spraying wire and the 4th ignition tip; Described heated filament arc spraying apparatus also comprises the first constant current source, the second constant current source and constant pressure source.Two output terminals of the first constant current source connect the first ignition tip and the 3rd ignition tip respectively, carry out preheating to the first spraying wire sent into; Two output terminals of the second constant current source connect the second ignition tip and the 4th ignition tip respectively, carry out preheating to the second spraying wire sent into; Two output terminals of constant pressure source connect the first ignition tip and the second ignition tip respectively, provide the voltage and current producing electric arc.The present invention can carry out preheating to spraying wire, is not improving under electric current or voltage condition, and the fusing amount of a material can be made more, reduces oxidation, obtains good coating quality, improves the efficiency of spraying and the quality of spraying.
Description
Technical field
The present invention relates to a kind of heated filament arc spraying apparatus, belong to technical field of hot working.
Background technology
In recent years, Surface Engineering development is very fast, and especially hot-spraying techniques obtains huge progress, improves the work-ing life of workpiece.In current hot-spraying techniques, Application comparison is arc spraying technology widely.Electric arc spraying utilizes the electric arc produced between the expendable wire electrode of two formation coated materials to be thermal source, heat fused expendable wire electrode, and be atomized by pressurized gas and be ejected on matrix, forms the heat spraying method of coating.Because it has that efficiency is high, cost is low, simple and safe operation, anchoring strength of coating are high and the advantage such as suitable on-the-spot original position large-area construction, obtain general attention at home and abroad.When electric arc spraying, voltage increase can make the size of metallics have some to increase, and causes the severe oxidation of metallics.The size of working current, determines the productivity of electric arc spraying in any case, and spraying current is directly proportional to spraying productivity.But the electric current of conventional electric arc spraying can not be excessive, and spraying current is excessive, coating toughness and bonding strength reduce, and coating quality reduces.
Electric arc spraying principle conventional at present as shown in Figure 1.
The positive pole of power supply connects the first end of output inductor, the first end of the second termination spray gun of output inductor, and the negative pole of power supply connects the second end of spray gun.
During spraying, two rhizoid shape metal spraying material (spraying wire) are by two ignition tips sending in arc spray gun respectively of wire feeder uniformly continous, and two ignition tips connect the positive and negative electrode of power supply respectively and ensure the reliable insulation of two spraying wires before not contacting.When two one metal wire material ends contact with each other owing to sending to, be short-circuited and produce electric arc, make a material end instant melting, then under the blowing force effect of external pressurized contracting air, make the spray material fragmentation atomization of fusing, under pressurized air effect, spraying particle is accelerated, when the spraying particle with certain speed and temperature arrives substrate surface, spraying particle is with certain kinetic energy impact substrate surface, producing the moment of collision, kinetic energy and most of heat energy of particle are passed away in the form of heat by matrix, the intimate surface contact of particle and base material produces and is out of shape, and rapidly condensation and shrinking, be bonded on base material in flats.That connect and come the successive Ground shock waves substrate surface of particle or pile up thereon and produce said process, will be bonded together interlacedly and form arc spray coatings between particle and substrate surface and between particle and particle.
During electric arc spraying, when spraying current or arc voltage excessive time, coating mean grain size can be caused to increase, and toughness and bonding strength reduce, and spray efficiency is reduced.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of heated filament arc spraying apparatus is provided, every root spraying wire adds an ignition tip, and connect galvanic current source at two ignition tips of every root spraying wire, heated in advance by extra current and fill silk material, to improve the burn-off rate of spraying wire, increase deposited metal amount.Compared with traditional arc spraying apparatus, the present invention can not improve under electric current or voltage condition, and the fusing amount of spraying wire can be made more, while the good coating quality of acquisition, improves the efficiency of spraying.The technical solution used in the present invention is:
A kind of heated filament arc spraying apparatus, comprise heated filament spray gun, described heated filament spray gun comprises the first ignition tip sent into for the first spraying wire, the second ignition tip sent into for the second spraying wire, and described heated filament spray gun also comprises the 3rd ignition tip sent into for the first spraying wire and the 4th ignition tip sent into for the second spraying wire; Described heated filament arc spraying apparatus also comprises the first constant current source, the second constant current source and constant pressure source.Two output terminals of described first constant current source connect the first ignition tip and the 3rd ignition tip respectively, form current circuit together with the first spraying wire between feeding first ignition tip and the 3rd ignition tip, carry out preheating to the first spraying wire sent into; Two output terminals of described second constant current source connect the second ignition tip and the 4th ignition tip respectively, form current circuit together with the second spraying wire between feeding second ignition tip and the 4th ignition tip, carry out preheating to the second spraying wire sent into; Two output terminals of described constant pressure source connect the first ignition tip and the second ignition tip respectively, provide the voltage and current producing electric arc.
Further, described first constant current source comprises the first adjustable current output circuit, the first power switch tube drives circuit, the first supply current feedback filtering circuit, core control circuit; Two output terminals of described first adjustable current output circuit connect described first ignition tip and the 3rd ignition tip respectively, form output loop with the first spraying wire of feeding first ignition tip and the 3rd ignition tip; To sample from the output loop of the first adjustable current output circuit the current feedback signal of heated filament spray gun first ignition tip and the 3rd ignition tip, and after the first supply current feedback filtering circuit filtering, be sent to core control circuit; The current feedback signal of sampling and parameter preset compare by core control circuit, and pass through the turn-on and turn-off of the power switch pipe in the first adjustable current output circuit described in the first power switch tube drives control circui, thus make the extra current needed for the first adjustable current output circuit output preheating first spraying wire.
Further, be provided with current sensor LEM3 in the output loop of described first adjustable current output circuit, described current sensor LEM3 sample the first adjustable current output circuit outward current and electric current is sent out feedback signal and sends to the first supply current feedback filtering circuit to carry out filtering.
Further, described first adjustable current output circuit comprises three-phase commutation bridge BR2, input filter capacitor C2, power switch pipe Q5, sustained diode 3, output inductor L2; The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR2 respectively, positive output termination input filter capacitor C2 one end of three-phase commutation bridge BR2 and the collector electrode of power switch pipe Q5; The emtting electrode of power switch pipe Q5 is connected with the negative electrode of one end of output inductor L2, sustained diode 3; The other end of output inductor L2 connects the 3rd ignition tip of heated filament spray gun as the positive output end of the first adjustable current output circuit; The negative output termination input filter capacitor C2 the other end of three-phase commutation bridge BR2 and the anode of sustained diode 3, and the first ignition tip connecting heated filament spray gun as the negative output terminal of the first adjustable current output circuit; The base stage of power switch pipe Q5 is connected with the first power switch tube drives circuit, by the first power switch tube drives control circui.
Further, described second constant current source comprises the second adjustable current output circuit, the second power switch tube drives circuit, second source current feedback filtering circuit, core control circuit; Two output terminals of described second adjustable current output circuit connect described second ignition tip and the 4th ignition tip respectively, form output loop with the second spraying wire of feeding second ignition tip and the 4th ignition tip; To sample from the output loop of the second adjustable current output circuit the current feedback signal of heated filament spray gun second ignition tip and the 4th ignition tip, and after the filtering of second source current feedback filtering circuit, be sent to core control circuit; The current feedback signal of sampling and parameter preset compare by core control circuit, and pass through the turn-on and turn-off of the power switch pipe in the second adjustable current output circuit described in the second power switch tube drives control circui, thus make the extra current needed for the second adjustable current output circuit output preheating second spraying wire.
Further, be provided with current sensor LEM4 in the output loop of described second adjustable current output circuit, described current sensor LEM4 sample the second adjustable current output circuit outward current and electric current is sent out feedback signal and sends to second source current feedback filtering circuit to carry out filtering.
Further, described second adjustable current output circuit comprises three-phase commutation bridge BR3, input filter capacitor C3, power switch pipe Q6, sustained diode 4, output inductor L3; The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR3 respectively, positive output termination input filter capacitor C3 one end of three-phase commutation bridge BR3 and the collector electrode of power switch pipe Q6; The emtting electrode of power switch pipe Q6 is connected with the negative electrode of one end of output inductor L3, sustained diode 4; The other end of output inductor L3 connects the 4th ignition tip of heated filament spray gun as the positive output end of the second adjustable current output circuit; The negative output termination input filter capacitor C3 the other end of three-phase commutation bridge BR3 and the anode of sustained diode 4, and the second ignition tip connecting heated filament spray gun as the negative output terminal of the second adjustable current output circuit; The base stage of power switch pipe Q6 is connected with the second power switch tube drives circuit, by the second power switch tube drives control circui.
Further, described constant pressure source comprises adjustable voltage output circuit, voltage of supply output circuit power switch tube drives circuit, the 3rd supply current feedback filtering circuit, voltage of supply feedback filtering circuit, core control circuit; Two output terminals of described adjustable voltage output circuit connect the first ignition tip sent into for the first spraying wire and the second ignition tip sent into for the second spraying wire respectively, provide the voltage and current of the starting the arc; From the outward current of adjustable voltage output circuit, the current feedback signal of arc load is flow through in sampling, and is sent to core control circuit after the 3rd supply current feedback filtering circuit filtering; From the voltage feedback signal of heated filament spray gun first ignition tip and the second ignition tip two ends sampling arc load, and be sent to core control circuit after voltage of supply feedback filtering circuit filtering; The current feedback signal of the arc load of sampling and voltage feedback signal and parameter preset compare by core control circuit, and pass through the turn-on and turn-off of the power switch pipe in adjustable voltage output circuit described in voltage of supply output circuit power switch tube drives control circui, thus make the voltage and current of adjustable voltage output circuit output needed for the starting the arc.
Further, an output terminal of described adjustable voltage output circuit is provided with current sensor LEM2, described current sensor LEM2 sample adjustable voltage output circuit outward current and sent to by the current feedback signal of arc load the 3rd supply current feedback filtering circuit to carry out filtering; Be parallel with voltage sensor LEM1 at heated filament spray gun first ignition tip and the second ignition tip go-and-retum, described voltage sensor LEM1 sample arc load voltage feedback signal and send to voltage of supply feedback filtering circuit to carry out filtering.
Further, described adjustable voltage output circuit comprises three-phase commutation bridge BR1, input filter capacitor C1, voltage follower circuit power switch pipe Q1, Q2, Q3, Q4, intermediate frequency transformer TRH, commutation diode D1, D2, output inductor L1; The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR1 respectively, positive output termination input filter capacitor C1 one end of three-phase commutation bridge BR1, the collector electrode of power switch pipe Q1 and Q2; The negative output termination input filter capacitor C1 the other end of three-phase commutation bridge BR1, the emtting electrode of power switch pipe Q3 and Q4; The emtting electrode of power switch pipe Q1 is connected with the first input end of the collector electrode of Q3, intermediate frequency transformer TRH; The emtting electrode of power switch pipe Q2 is connected with second input terminus of the collector electrode of Q4, intermediate frequency transformer TRH; First output terminal of intermediate frequency transformer TRH is connected with the anode of commutation diode D1, and second output terminal of intermediate frequency transformer TRH is connected with the anode of commutation diode D2; The negative electrode of commutation diode D1 with D2 is connected and is connected one end of output inductor L1, and the other end of output inductor L1 connects heated filament spray gun first ignition tip as the positive output end of adjustable voltage output circuit; The center tap of intermediate frequency transformer TRH secondary connects heated filament spray gun second ignition tip as the negative output terminal of adjustable voltage output circuit; First input end and first output terminal of intermediate frequency transformer TRH are Same Name of Ends; The base stage of power switch pipe Q1, Q2, Q3, Q4 is connected with voltage of supply output circuit power switch tube drives circuit respectively, by power supply voltage follower circuit power switch tube drives control circui.
Advantage of the present invention: in the present invention, by the first constant current source and the second constant current source to spraying wire extra current, preheating is carried out to spraying wire, compared with traditional arc spraying apparatus, this heated filament arc spraying apparatus is not improving under electric current or voltage condition, the fusing amount of a material can be made more, can reduce oxidation, while the good coating quality of acquisition, greatly improve the efficiency of spraying and the quality of spraying.
Accompanying drawing explanation
The electric arc spraying schematic diagram that Fig. 1 is conventional before being.
Fig. 2 is entire system block diagram of the present invention.
Fig. 3 is the overall system architecture figure of the embodiment of the present invention.
Fig. 4 is the fundamental diagram one of the embodiment of the present invention.
Fig. 5 is the fundamental diagram two of the embodiment of the present invention.
Fig. 6 is the fundamental diagram three of the embodiment of the present invention.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
According to heated filament arc spraying apparatus provided by the present invention, its general frame as shown in Figure 2, comprise heated filament spray gun 4, described heated filament spray gun 4 comprises the first ignition tip 101 sent into for the first spraying wire, the second ignition tip 102 sent into for the second spraying wire, improvements of the present invention are, described heated filament spray gun 4 also comprises the 3rd ignition tip 103 sent into for the first spraying wire and the 4th ignition tip 104 sent into for the second spraying wire; Described heated filament arc spraying apparatus also comprises the first constant current source, the second constant current source and constant pressure source.Two output terminals of described first constant current source connect the first ignition tip 101 and the 3rd ignition tip 103 respectively, current circuit is formed together with the first spraying wire between feeding first ignition tip 101 and the 3rd ignition tip 103, first constant current source is used for providing extra current, carries out preheating to the first spraying wire sent into; Two output terminals of described second constant current source connect the second ignition tip 102 and the 4th ignition tip 104 respectively, current circuit is formed together with the second spraying wire between feeding second ignition tip 102 and the 4th ignition tip 104, second constant current source, also for providing extra current, carries out preheating to the second spraying wire sent into.Two output terminals of described constant pressure source connect the first ignition tip 101 and the second ignition tip 102 respectively, provide the voltage and current producing electric arc.
The detailed construction of heated filament arc spraying apparatus as shown in Figure 3, comprises the first adjustable current output circuit 1, second adjustable current output circuit 2, adjustable voltage output circuit 3, heated filament spray gun 4, first power switch tube drives circuit 5, second power switch tube drives circuit 6, first supply current feedback filtering circuit 7, second source current feedback filtering circuit the 8, the 3rd supply current feedback filtering circuit 9, voltage of supply feedback filtering circuit 10, voltage of supply output circuit power switch tube drives circuit 11, core control circuit 12.
First adjustable current output circuit 1, first power switch tube drives circuit 5, first supply current feedback filtering circuit 7, core control circuit 12 form the first constant current source jointly.First adjustable current output circuit 1 forms primarily of three-phase commutation bridge BR2, input filter capacitor C2, power switch pipe Q5, sustained diode 3, output inductor L2; First adjustable current output circuit 1 can export a stable direct current.
Particularly, the U of three-phase alternating current, V, W three-phase is connected to three input terminuss (one end, two ends and three ends) of three-phase commutation bridge BR2 respectively, and the positive output end (four ends) of three-phase commutation bridge BR2 connects the collector electrode of input filter capacitor C2 one end and power switch pipe Q5; The emtting electrode of power switch pipe Q5 is connected with the negative electrode of one end of output inductor L2, sustained diode 3; The other end of output inductor L2 connects the 3rd ignition tip 103 of heated filament spray gun 4 as the positive output end of the first adjustable current output circuit 1; The negative output terminal (five terminal) of three-phase commutation bridge BR2 connects the anode of the input filter capacitor C2 the other end and sustained diode 3, and connects the first ignition tip 101 of heated filament spray gun 4 as the negative output terminal of the first adjustable current output circuit 1; The base stage of power switch pipe Q5 is connected with the first power switch tube drives circuit 5, controls by the first power switch tube drives circuit 5.
The working condition of the first constant current source is as described below: two output terminals of the first adjustable current output circuit 1 connect the first ignition tip 101 and the 3rd ignition tip 103 respectively, forms output loop with the first spraying wire of feeding first ignition tip 101 and the 3rd ignition tip 103; To sample from the output loop of the first adjustable current output circuit 1 current feedback signal of heated filament spray gun first ignition tip 101 and the 3rd ignition tip 103, and after the first supply current feedback filtering circuit 7 filtering, be sent to core control circuit 12; The current feedback signal of sampling and parameter preset compare by core control circuit 12, and controlled the turn-on and turn-off of the power switch pipe in described first adjustable current output circuit 1 by the first power switch tube drives circuit 5, thus the first adjustable current output circuit 1 is made to export extra current needed for preheating first spraying wire.
Second adjustable current output circuit 2, second power switch tube drives circuit 6, second source current feedback filtering circuit 8, core control circuit 12 form the second constant current source jointly.Second adjustable current output circuit 2 forms primarily of three-phase commutation bridge BR3, input filter capacitor C3, power switch pipe Q6, sustained diode 4, output inductor L3; Second adjustable current output circuit 2 can export a stable direct current.
Particularly, the U of three-phase alternating current, V, W three-phase is connected to three input terminuss (one end, two ends and three ends) of three-phase commutation bridge BR3 respectively, and the positive output end (four ends) of three-phase commutation bridge BR3 connects the collector electrode of input filter capacitor C3 one end and power switch pipe Q6; The emtting electrode of power switch pipe Q6 is connected with the negative electrode of one end of output inductor L3, sustained diode 4; The other end of output inductor L3 connects the 4th ignition tip 104 of heated filament spray gun 4 as the positive output end of the second adjustable current output circuit 2; The negative output terminal (five terminal) of three-phase commutation bridge BR3 connects the anode of the input filter capacitor C3 the other end and sustained diode 4, and connects the second ignition tip 102 of heated filament spray gun 4 as the negative output terminal of the second adjustable current output circuit 2; The base stage of power switch pipe Q6 is connected with the second power switch tube drives circuit 6, controls by the second power switch tube drives circuit 6.
The working condition of the second constant current source is as described below: two output terminals of the second adjustable current output circuit 2 connect the second ignition tip 102 and the 4th ignition tip 104 respectively, forms output loop with the second spraying wire of feeding second ignition tip 102 and the 4th ignition tip 104; To sample from the output loop of the second adjustable current output circuit 2 current feedback signal of heated filament spray gun second ignition tip 102 and the 4th ignition tip 104, and after the filtering of second source current feedback filtering circuit 8, be sent to core control circuit 12; The current feedback signal of sampling and parameter preset compare by core control circuit 12, and controlled the turn-on and turn-off of the power switch pipe in described second adjustable current output circuit 2 by the second power switch tube drives circuit 6, thus the second adjustable current output circuit 2 is made to export extra current needed for preheating second spraying wire.
Adjustable voltage output circuit 3, voltage of supply output circuit power switch tube drives circuit the 11, the 3rd supply current feedback filtering circuit 9, voltage of supply feedback filtering circuit 10, core control circuit 12 form constant pressure source jointly.Adjustable voltage output circuit 3 is primarily of three-phase commutation bridge BR1, and input filter capacitor C1, voltage follower circuit power switch pipe Q1, Q2, Q3, Q4, intermediate frequency transformer TRH, commutation diode D1, D2, output inductor L1 forms.As long as adjustable voltage output circuit 3 can export the volts DS of 0-85V, different according to the requirement of electrical arc spraying power source power, the maximum 650A of output current capacity.This circuit can use half-bridge inversion circuit, push-pull inverter circuit equally, or the acquisition such as single-ended inverter circuit; Also the voltage follower circuit etc. of the chopper-type voltage follower circuit based on Industrial Frequency Transformer, the chopper-type voltage follower circuit based on generator, the voltage follower circuit based on silicon controlled rectifier, the voltage follower circuit based on generator or the Industrial Frequency Transformer based on band tap can be adopted.
Particularly, the U of three-phase alternating current, V, W three-phase is connected to three input terminuss (one end, two ends and three ends) of three-phase commutation bridge BR1 respectively, and the positive output end (four ends) of three-phase commutation bridge BR1 connects the collector electrode of input filter capacitor C1 one end, power switch pipe Q1 and Q2; The negative output terminal (five terminal) of three-phase commutation bridge BR1 connects the emtting electrode of the input filter capacitor C1 the other end, power switch pipe Q3 and Q4; The emtting electrode of power switch pipe Q1 is connected with the first input end (one end) of the collector electrode of Q3, intermediate frequency transformer TRH; The emtting electrode of power switch pipe Q2 is connected with second input terminus (two ends) of the collector electrode of Q4, intermediate frequency transformer TRH; First output terminal (three ends) of intermediate frequency transformer TRH is connected with the anode of commutation diode D1, and second output terminal (five terminal) of intermediate frequency transformer TRH is connected with the anode of commutation diode D2; The negative electrode of commutation diode D1 with D2 is connected and is connected one end of output inductor L1, and the other end of output inductor L1 connects heated filament spray gun first ignition tip 101 as the positive output end of adjustable voltage output circuit 3; The center tap (four ends) of intermediate frequency transformer TRH secondary connects heated filament spray gun second ignition tip 102 as the negative output terminal of adjustable voltage output circuit 3; The first input end (one end) of intermediate frequency transformer TRH and the first output terminal (three ends) are Same Name of Ends; The base stage of power switch pipe Q1, Q2, Q3, Q4 is connected with voltage of supply output circuit power switch tube drives circuit 11 respectively, controls by power supply voltage follower circuit power switch tube drives circuit 11.
The working condition of constant pressure source is as described below: two output terminals of adjustable voltage output circuit 3 connect the first ignition tip 101 sent into for the first spraying wire and the second ignition tip 102 sent into for the second spraying wire respectively, provide the voltage and current of the starting the arc; From the outward current of adjustable voltage output circuit 3, the current feedback signal of arc load is flow through in sampling, and is sent to core control circuit 12 after the 3rd supply current feedback filtering circuit 9 filtering; From the voltage feedback signal of heated filament spray gun first ignition tip 101 and the second ignition tip 102 two ends sampling arc load, and be sent to core control circuit 12 after the filtering of voltage of supply feedback filtering circuit 10; The current feedback signal of the arc load of sampling and voltage feedback signal and parameter preset compare by core control circuit 12, and controlled the turn-on and turn-off of the power switch pipe in described adjustable voltage output circuit 3 by voltage of supply output circuit power switch tube drives circuit 11, thus adjustable voltage output circuit 3 is made to export voltage and current needed for the starting the arc.
Core control circuit 12 is connected, for arranging the output parameter of power supply with the mutual circuit 13 of a personal-machine.
The driving circuit of the first power switch tube drives circuit 5(power switch pipe Q5) and the driving circuit of the second power switch tube drives circuit 6(power switch pipe Q6) form primarily of IGBT special driving chip M57962, first supply current feedback filtering circuit 7, second source current feedback filtering circuit 8, 3rd supply current feedback filtering circuit 9 is made up of low-pass filter, voltage of supply feedback filtering circuit 10 is made up of low-pass filter, core control circuit 12 is made up of PIC30f2020 etc., man-machine interaction circuit 13 is by display circuit and the keyboard such as LED or LCD of routine, the circuit compositions such as encoder.
As shown in Figure 3, LEM1 is isolated voltage sensor, is parallel to heated filament spray gun first ignition tip 101 and the second ignition tip 102 two ends, for detecting the magnitude of voltage at electric arc two ends.Voltage of supply feedback filtering circuit 10 is between LEM1 and core control circuit 12.LEM2,3,4 is isolated current sensor, for detecting electric power outputting current.LEM2 is located on the negative output terminal of adjustable voltage output circuit 3, and LEM3 is located in the output loop of the first adjustable current output circuit 1, and LEM4 is located in the output loop of the second adjustable current output circuit 2.3rd supply current feedback filtering circuit 9 is between LEM2 and core control circuit 12.First supply current feedback filtering circuit 7 is between LEM3 and core control circuit 12.Second source current feedback filtering circuit 8 is between LEM4 and core control circuit 12.First power switch tube drives circuit 5 is between core control circuit 12 and power switch pipe Q5, and the second power switch tube drives circuit 6 is between core control circuit 12 and power switch pipe Q6.Core control circuit 12 is connected with man-machine interaction circuit 13, can arrange power parameter.Below in conjunction with spraying process, illustrate the working process of power supply.
In adjustable voltage output circuit 3, power switch pipe Q1, Q4 conducting simultaneously, power switch pipe Q2, Q3 conducting simultaneously.The turn-on instant of Q1, Q4 and Q2, Q3 is anti-phase, phase 180 degree.By controlling the turn-on and turn-off of adjustable voltage output circuit 3 power switch pipe, regulate the output voltage of adjustable voltage output circuit 3, thus the size of regulating load electric current, make it to change according to desirable waveform.
In arc spray process, as the switching tube Q1 of adjustable voltage output circuit 3, Q4 conducting, Q2, Q3 turn off, power switch pipe Q5 conducting in the first adjustable current output circuit 1, in the second adjustable current output circuit 2 during power switch pipe Q6 conducting, as shown in Figure 4.Intermediate frequency transformer TRH primary current flows out from positive output end four end of three-phase commutation bridge BR1, through power switch pipe Q1, flow into from one end, former limit of intermediate frequency transformer TRH, flow out from former limit two end, through power switch pipe Q4, finally flow back to from the negative output terminal five terminal of three-phase commutation bridge BR1.The secondary current of intermediate frequency transformer TRH flows out from three ends, and through commutation diode D1, output inductor L1, electric current, through welding arc load, finally enters center tap four end of intermediate frequency transformer TRH.In the first adjustable current output circuit 1, electric current flows out from positive output end four end of three-phase commutation bridge BR2, through one end of filter capacitor C2, power switch pipe Q5, output inductor L2, the 3rd ignition tip 103, first ignition tip 101, finally flow back to from the negative output terminal five terminal of three-phase commutation bridge BR2.In the second adjustable current output circuit 2, electric current flows out from positive output end four end of three-phase commutation bridge BR3, through one end of filter capacitor C3, power switch pipe Q6, output inductor L3, the 4th ignition tip 104, second ignition tip 102, finally flow back to from the negative output terminal five terminal of three-phase commutation bridge BR3.
When the switching tube in the first adjustable current output circuit 1, second adjustable current output circuit 2, adjustable voltage output circuit 3 all turns off, as shown in Figure 5.Intermediate frequency transformer TRH primary current is zero, the output inductor L1 of secondary exports energy, electric current flows out from two ends (i.e. the other end) of output inductor L1, through arc load, enter the center tap of intermediate frequency transformer TRH secondary, through commutation diode D1 and D2 afterflow, finally flow back to one end of filter inductance L1.In the first adjustable current output circuit 1, electric current flows out from two ends (i.e. the other end) of output inductor L2, electric current flows through the 3rd ignition tip 103, first ignition tip 101, arrive the anode of sustained diode 3, last electric current goes back to one end of output inductor L2 from the cathode system of sustained diode 3.In the second adjustable current output circuit 2, electric current flows out from two ends (i.e. the other end) of output inductor L3, electric current flows through the 4th ignition tip 104, second ignition tip 102, arrive the anode of sustained diode 4, last electric current goes back to one end of output inductor L3 from the cathode system of sustained diode 4.
As adjustable voltage output circuit 3 breaker in middle pipe Q2, Q3 conducting, Q1, Q4 turn off, power switch pipe Q5 conducting in the first adjustable current output circuit 1, in the second adjustable current output circuit 2 during power switch pipe Q6 conducting as shown in Figure 6.Intermediate frequency transformer TRH primary current flows out from positive output end four end of three-phase commutation bridge BR1, through power switch pipe Q2, flow into from former limit two end of intermediate frequency transformer TRH, flow out from one end, former limit, through power switch pipe Q3, finally flow back to from the negative output terminal five terminal of three-phase commutation bridge BR1.The secondary current of intermediate frequency transformer TRH flows out from five terminal, and through commutation diode D2, filter inductance L1, through welding arc load, finally enters center tap four end of intermediate frequency transformer TRH.In the first adjustable current output circuit 1, electric current flows out from positive output end four end of three-phase commutation bridge BR2, through one end of filter capacitor C2, power switch pipe Q5, output inductor L2,3rd ignition tip 103, first ignition tip 101, finally flows back to from the negative output terminal five terminal of three-phase commutation bridge BR2.In the second adjustable current output circuit 2, electric current flows out from positive output end four end of three-phase commutation bridge BR3, through one end of filter capacitor C3, power switch pipe Q6, output inductor L3,4th ignition tip 104, second ignition tip 102, finally flows back to from the negative output terminal five terminal of three-phase commutation bridge BR3.
Pulse width modulation (Pluse Width Modulation is adopted in the present invention, be called for short PWM) control techniques, control power switch pipe Q1, Q2 in adjustable voltage output circuit 3 by voltage of supply output circuit power switch tube drives circuit 11, the conducting of Q3, Q4 and shutoff.Conducting and the shutoff of power switch pipe Q5 in the first adjustable current output circuit 1 is controlled by the first power switch tube drives circuit 5.Conducting and the shutoff of power switch pipe Q6 in the second adjustable current output circuit 2 is controlled by the second power switch tube drives circuit 6.By adjustment pulse duty factor, the outward current in arc spray process can be controlled.
In the course of the work, voltage sensor LEM1 samples to the voltage between first ignition tip 101, second ignition tip 102 at arc nozzle two ends, current sensor LEM2 samples to the electric current flowing through arc load, current sensor LEM3 samples to the outward current between the first ignition tip 101, the 3rd ignition tip 103, and current sensor LEM4 samples to the outward current between the second ignition tip 102, the 4th ignition tip 104.Sampled result is given core control circuit 12, the parameter that sampled result and man-machine interaction circuit 13 set is compared computing by core control circuit 12 respectively, transmission of signal is to voltage of supply output circuit power switch tube drives circuit 11, first power switch tube drives circuit 5, second power switch tube drives circuit 6, the turn-on and turn-off of regulating power switching tube Q1, Q2, Q3, Q4, Q5, Q6 respectively, finally realize outward current and voltage parameter is equal with human-computer exchange circuit configuration value respectively.
In power-supply system (mainly referring to the first constant current source, the second constant current source and constant pressure source), the output voltage range of adjustable voltage output circuit 3 is 0V-85V, and average voltage scope is 0-45V, and output current scope is 10-650A.The scope of the outward current of the first adjustable current output circuit 1 and the second adjustable current output circuit 2 is 50A-200A.
Claims (10)
1. a heated filament arc spraying apparatus, comprise heated filament spray gun (4), described heated filament spray gun (4) comprises the first ignition tip (101) sent into for the first spraying wire, the second ignition tip (102) sent into for the second spraying wire, it is characterized in that: described heated filament spray gun (4) also comprises the 3rd ignition tip (103) sent into for the first spraying wire and the 4th ignition tip (104) sent into for the second spraying wire; Described heated filament arc spraying apparatus also comprises the first constant current source, the second constant current source and constant pressure source;
Two output terminals of described first constant current source connect the first ignition tip (101) and the 3rd ignition tip (103) respectively, form current circuit together with the first spraying wire between feeding first ignition tip (101) and the 3rd ignition tip (103), preheating is carried out to the first spraying wire sent into;
Two output terminals of described second constant current source connect the second ignition tip (102) and the 4th ignition tip (104) respectively, form current circuit together with the second spraying wire between feeding second ignition tip (102) and the 4th ignition tip (104), preheating is carried out to the second spraying wire sent into;
Two output terminals of described constant pressure source connect the first ignition tip (101) and the second ignition tip (102) respectively, provide the voltage and current producing electric arc.
2. heated filament arc spraying apparatus as claimed in claim 1, is characterized in that: described first constant current source comprises the first adjustable current output circuit (1), the first power switch tube drives circuit (5), the first supply current feedback filtering circuit (7), core control circuit (12);
Two output terminals of described first adjustable current output circuit (1) connect described first ignition tip (101) and the 3rd ignition tip (103) respectively, form output loop with the first spraying wire of feeding first ignition tip (101) and the 3rd ignition tip (103);
To sample from the output loop of the first adjustable current output circuit (1) current feedback signal of heated filament spray gun first ignition tip (101) and the 3rd ignition tip (103), and after the first supply current feedback filtering circuit (7) filtering, be sent to core control circuit (12); The current feedback signal of sampling and parameter preset compare by core control circuit (12), and controlled the turn-on and turn-off of the power switch pipe in described first adjustable current output circuit (1) by the first power switch tube drives circuit (5), thus make the extra current needed for the first adjustable current output circuit (1) output preheating first spraying wire.
3. heated filament arc spraying apparatus as claimed in claim 2, it is characterized in that: in the output loop of described first adjustable current output circuit (1), be provided with current sensor LEM3, described current sensor LEM3 sample the first adjustable current output circuit (1) outward current and electric current is sent out feedback signal and sends to the first supply current feedback filtering circuit (7) to carry out filtering.
4. heated filament arc spraying apparatus as claimed in claim 2, is characterized in that: described first adjustable current output circuit (1) comprises three-phase commutation bridge BR2, input filter capacitor C2, power switch pipe Q5, sustained diode 3, output inductor L2;
The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR2 respectively, positive output termination input filter capacitor C2 one end of three-phase commutation bridge BR2 and the collector electrode of power switch pipe Q5; The emtting electrode of power switch pipe Q5 is connected with the negative electrode of one end of output inductor L2, sustained diode 3; The other end of output inductor L2 connects the 3rd ignition tip (103) of heated filament spray gun (4) as the positive output end of the first adjustable current output circuit (1);
The negative output termination input filter capacitor C2 the other end of three-phase commutation bridge BR2 and the anode of sustained diode 3, and as the first adjustable current output circuit (1) negative output terminal connect heated filament spray gun (4) the first ignition tip (101);
The base stage of power switch pipe Q5 is connected with the first power switch tube drives circuit (5), controls by the first power switch tube drives circuit (5).
5. heated filament arc spraying apparatus as claimed in claim 1, is characterized in that: described second constant current source comprises the second adjustable current output circuit (2), the second power switch tube drives circuit (6), second source current feedback filtering circuit (8), core control circuit (12);
Two output terminals of described second adjustable current output circuit (2) connect described second ignition tip (102) and the 4th ignition tip (104) respectively, form output loop with the second spraying wire of feeding second ignition tip (102) and the 4th ignition tip (104);
To sample from the output loop of the second adjustable current output circuit (2) current feedback signal of heated filament spray gun second ignition tip (102) and the 4th ignition tip (104), and after second source current feedback filtering circuit (8) filtering, be sent to core control circuit (12); The current feedback signal of sampling and parameter preset compare by core control circuit (12), and controlled the turn-on and turn-off of the power switch pipe in described second adjustable current output circuit (2) by the second power switch tube drives circuit (6), thus make the extra current needed for the second adjustable current output circuit (2) output preheating second spraying wire.
6. heated filament arc spraying apparatus as claimed in claim 5, it is characterized in that: in the output loop of described second adjustable current output circuit (2), be provided with current sensor LEM4, described current sensor LEM4 sample the second adjustable current output circuit (2) outward current and electric current is sent out feedback signal and sends to second source current feedback filtering circuit (8) to carry out filtering.
7. heated filament arc spraying apparatus as claimed in claim 5, is characterized in that: described second adjustable current output circuit (2) comprises three-phase commutation bridge BR3, input filter capacitor C3, power switch pipe Q6, sustained diode 4, output inductor L3;
The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR3 respectively, positive output termination input filter capacitor C3 one end of three-phase commutation bridge BR3 and the collector electrode of power switch pipe Q6; The emtting electrode of power switch pipe Q6 is connected with the negative electrode of one end of output inductor L3, sustained diode 4; The other end of output inductor L3 connects the 4th ignition tip (104) of heated filament spray gun (4) as the positive output end of the second adjustable current output circuit (2);
The negative output termination input filter capacitor C3 the other end of three-phase commutation bridge BR3 and the anode of sustained diode 4, and as the second adjustable current output circuit (2) negative output terminal connect heated filament spray gun (4) the second ignition tip (102);
The base stage of power switch pipe Q6 is connected with the second power switch tube drives circuit (6), controls by the second power switch tube drives circuit (6).
8. heated filament arc spraying apparatus as claimed in claim 1, is characterized in that: described constant pressure source comprises adjustable voltage output circuit (3), voltage of supply output circuit power switch tube drives circuit (11), the 3rd supply current feedback filtering circuit (9), voltage of supply feedback filtering circuit (10), core control circuit (12);
Two output terminals of described adjustable voltage output circuit (3) connect the first ignition tip (101) sent into for the first spraying wire and the second ignition tip (102) sent into for the second spraying wire respectively, provide the voltage and current of the starting the arc;
From the outward current of adjustable voltage output circuit (3), the current feedback signal of arc load is flow through in sampling, and is sent to core control circuit (12) after the 3rd supply current feedback filtering circuit (9) filtering; From the voltage feedback signal of heated filament spray gun first ignition tip (101) and the second ignition tip (102) two ends sampling arc load, and be sent to core control circuit (12) after voltage of supply feedback filtering circuit (10) filtering; The current feedback signal of the arc load of sampling and voltage feedback signal and parameter preset compare by core control circuit (12), and controlled the turn-on and turn-off of the power switch pipe in described adjustable voltage output circuit (3) by voltage of supply output circuit power switch tube drives circuit (11), thus make the voltage and current of adjustable voltage output circuit (3) output needed for the starting the arc.
9. heated filament arc spraying apparatus as claimed in claim 8, it is characterized in that: an output terminal of described adjustable voltage output circuit (3) is provided with current sensor LEM2, described current sensor LEM2 sample adjustable voltage output circuit (3) outward current and sent to by the current feedback signal of arc load the 3rd supply current feedback filtering circuit (9) to carry out filtering;
Be parallel with voltage sensor LEM1 at heated filament spray gun first ignition tip (101) and the second ignition tip (102) go-and-retum, described voltage sensor LEM1 sample arc load voltage feedback signal and send to voltage of supply feedback filtering circuit (10) to carry out filtering.
10. heated filament arc spraying apparatus as claimed in claim 8, it is characterized in that: described adjustable voltage output circuit (3) comprises three-phase commutation bridge BR1, input filter capacitor C1, voltage follower circuit power switch pipe Q1, Q2, Q3, Q4, intermediate frequency transformer TRH, commutation diode D1, D2, output inductor L1;
The three-phase of three-phase alternating current is connected to three input terminuss of three-phase commutation bridge BR1 respectively, positive output termination input filter capacitor C1 one end of three-phase commutation bridge BR1, the collector electrode of power switch pipe Q1 and Q2; The negative output termination input filter capacitor C1 the other end of three-phase commutation bridge BR1, the emtting electrode of power switch pipe Q3 and Q4; The emtting electrode of power switch pipe Q1 is connected with the first input end of the collector electrode of Q3, intermediate frequency transformer TRH; The emtting electrode of power switch pipe Q2 is connected with second input terminus of the collector electrode of Q4, intermediate frequency transformer TRH;
First output terminal of intermediate frequency transformer TRH is connected with the anode of commutation diode D1, and second output terminal of intermediate frequency transformer TRH is connected with the anode of commutation diode D2; The negative electrode of commutation diode D1 with D2 is connected and is connected one end of output inductor L1, and the other end of output inductor L1 connects heated filament spray gun first ignition tip (101) as the positive output end of adjustable voltage output circuit 3;
The center tap of intermediate frequency transformer TRH secondary connects heated filament spray gun second ignition tip (102) as the negative output terminal of adjustable voltage output circuit (3);
First input end and first output terminal of intermediate frequency transformer TRH are Same Name of Ends;
The base stage of power switch pipe Q1, Q2, Q3, Q4 is connected with voltage of supply output circuit power switch tube drives circuit (11) respectively, controls by power supply voltage follower circuit power switch tube drives circuit (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310473975.1A CN103510037B (en) | 2013-10-12 | 2013-10-12 | Heated filament arc spraying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310473975.1A CN103510037B (en) | 2013-10-12 | 2013-10-12 | Heated filament arc spraying apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103510037A CN103510037A (en) | 2014-01-15 |
| CN103510037B true CN103510037B (en) | 2015-09-30 |
Family
ID=49893461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310473975.1A Active CN103510037B (en) | 2013-10-12 | 2013-10-12 | Heated filament arc spraying apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103510037B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2343395A1 (en) * | 2010-01-12 | 2011-07-13 | General Electric Company | Wire arc spray system using composite wire for porous coating, and related method |
| CN202279853U (en) * | 2011-09-29 | 2012-06-20 | 北京工业大学 | DC (direct current) pulse arc processing system |
| CN203498456U (en) * | 2013-10-12 | 2014-03-26 | 无锡洲翔成套焊接设备有限公司 | Hot-wire electric arc spraying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147672A (en) * | 1983-02-10 | 1984-08-24 | Hitachi Zosen Corp | Electric arc melt-spraying method |
-
2013
- 2013-10-12 CN CN201310473975.1A patent/CN103510037B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2343395A1 (en) * | 2010-01-12 | 2011-07-13 | General Electric Company | Wire arc spray system using composite wire for porous coating, and related method |
| CN202279853U (en) * | 2011-09-29 | 2012-06-20 | 北京工业大学 | DC (direct current) pulse arc processing system |
| CN203498456U (en) * | 2013-10-12 | 2014-03-26 | 无锡洲翔成套焊接设备有限公司 | Hot-wire electric arc spraying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103510037A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107276405B (en) | The fine electric spark pulse power and Discrete control method based on the power supply | |
| CN101524781B (en) | AC arc welding system and method thereof | |
| CN101323048B (en) | Control method of electron-beam welder acceleration high-voltage power supply as well as power-supply apparatus | |
| CN103100783B (en) | Double arc hybrid welding power supply device | |
| CN106735198A (en) | A kind of electron beam High-precision high-frequency deflection scanning device | |
| CN203498456U (en) | Hot-wire electric arc spraying device | |
| CN103354428B (en) | Super-audio frequency fast-transformation DC (direct current) pulse plasma spraying power supply | |
| CN101856769A (en) | Plasma arc cutting and welding power supply | |
| CN110729914A (en) | Closed-loop regulated high-precision superaudio pulse power supply | |
| CN103418892B (en) | A kind of welding supply and control method that there is energy and keep loop | |
| CN103192167B (en) | A kind of two consumable electrode transferred arc composite welding supply unit | |
| CN103510037B (en) | Heated filament arc spraying apparatus | |
| KR100855543B1 (en) | Power supply apparatus of inverter welder using scr | |
| CN108183619A (en) | A kind of high powered plasma cutting power supply | |
| CN105149732B (en) | A kind of consumable electrode welding machine and its welding method | |
| CN203498458U (en) | Novel efficient electric-arc spraying device | |
| CN103526150B (en) | A kind of arc spraying apparatus | |
| CN203582948U (en) | Double-arc spraying device with spraying matrix heating function | |
| CN107332459B (en) | Nanosecond pulse power supply system for wire-cut electric discharge machining and control method | |
| CN103182596B (en) | Adaptive variable polarity plasma arc welding power supply | |
| CN203292680U (en) | Self-adaptive polarity-variable plasma arc welding power source | |
| CN207926459U (en) | A kind of high powered plasma cutting power supply | |
| CN208132170U (en) | A kind of low-cost energy-saving AC-DC argon arc welding machine | |
| CN103510038B (en) | Double-arc electric arc spraying device with spraying substrate heating function | |
| CN203433400U (en) | Electric arc energy adjusting device based on bifurcation compound arc welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |