CN108710345B - Workpiece alloy coating remelting control system and control method - Google Patents
Workpiece alloy coating remelting control system and control method Download PDFInfo
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- CN108710345B CN108710345B CN201810296669.8A CN201810296669A CN108710345B CN 108710345 B CN108710345 B CN 108710345B CN 201810296669 A CN201810296669 A CN 201810296669A CN 108710345 B CN108710345 B CN 108710345B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by quality surveillance of production
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32368—Quality control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
This application involves a kind of workpiece alloy coating remelting control system and control method, workpiece alloy coating remelting control system includes single-chip microcontroller and the coreless induction furnace unit connecting with the single-chip microcontroller, temperature collecting cell and stepper motor unit；The single-chip microcontroller control coreless induction furnace unit heats workpiece alloy coating；The temperature collecting cell acquires the temperature of workpiece surface in real time and is sent to the single-chip microcontroller；The temperature received is compared by the single-chip microcontroller with preset process warm angle value, and is controlled the stepper motor unit according to comparison result and acted, and the stepper motor unit drives workpiece to realize rotation and move horizontally by workbench.The application can complete the automatic control of workpiece remelting, and control precision is high, under the premise of saving human resources, the problems such as can be improved the yield rate of workpiece, be able to solve to manually-operated dependence.
Description
Technical field
The application belongs to Technology For Remelting field, and in particular to a kind of workpiece alloy coating remelting control system and controlling party
Method.
Background technique
In the production process of the two-way rod collar in oil field, need to carry out nickel base self-fluxing alloy powder to workpiece surface
Thermal spraying, and to alloy powder carry out remelting processing, to guarantee that workpiece is corrosion-resistant and wear-resistant under harsh environments
Performance.Presently, there are a variety of re melting process modes, common are flame remolten, laser remolten, inducting remolten etc..Above-mentioned remelting side
Formula is each provided with different advantages, applied to different production links.
In workpiece remelting processing process, the temperature control of workpiece surface alloy coat is the important guarantor of finished workpart rate
Card.In actual production process, conventional plant relies on skilled artisan to pass through eye-observation surface coating fusion process mostly
Realize remelting link, production efficiency and yield rate be not high, high labor cost high to the technical requirements of worker, and to the body of worker
Body health constitutes a threat to.
Summary of the invention
To be overcome the problems, such as present in the relevant technologies at least to a certain extent, this application provides a kind of paintings of workpiece alloy
Layer remelting control system and control method.
According to the embodiment of the present application in a first aspect, this application provides a kind of workpiece alloy coating remelting control system,
It includes single-chip microcontroller and the coreless induction furnace unit connecting with the single-chip microcontroller, temperature collecting cell and stepper motor unit；It is described
Single-chip microcontroller control coreless induction furnace unit heats workpiece alloy coating；The temperature collecting cell acquires workpiece surface in real time
Temperature is simultaneously sent to the single-chip microcontroller；The temperature received is compared by the single-chip microcontroller with preset process warm angle value, and
The stepper motor unit movement is controlled according to comparison result, the stepper motor unit drives workpiece to realize certainly by workbench
Turn and moves horizontally.
Further, the coreless induction furnace unit includes sequentially connected first isolation circuit, reverser, relay and high frequency
Furnace；The control signal of the single-chip microcontroller output inputs the reverser by first isolation circuit, and control signal controls institute
State the actuating of relay；The normally-closed contact of the relay connects the stopping control line of the coreless induction furnace, the relay it is normally opened
Contact connects the beginning control line of the coreless induction furnace, the common end control line of the common of the relay and the coreless induction furnace
It is connected.
Further, the coreless induction furnace uses high-frequency induction formula heating furnace, the sense in the high-frequency induction formula heating furnace
The shape and workpiece for answering coil carry out matching setting.
Further, the temperature collecting cell includes infrared temperature sensor, sample resistance and voltage follower；It is described
Collected temperature signal is converted into current signal and output with isolation by infrared temperature sensor；The sample resistance is to electricity
Stream signal is converted into voltage signal after being sampled；Voltage signal inputs the mould in the single-chip microcontroller by the voltage follower
Number converter.
Further, the stepper motor unit includes the second isolation circuit, driver, stepper motor and isolation transformation
Device；The single-chip microcontroller passes sequentially through second isolation circuit and driver is connect with the stepper motor；The isolation transformation
Device is connect with driver, is carried out for the driver independently-powered；
The stepper motor mixes formula stepper motor using five, and the pulse drive signal of the single-chip microcontroller output is using liter
Frequently-constant frequency-frequency reducing mode output.
Further, it is additionally provided with location information acquisition unit in the workpiece alloy coating remelting control system, it is described
Location information acquisition unit is connect with single-chip microcontroller；The location information acquisition unit is used to acquire the location information of workpiece；It is described
The initial position and the final position after workpiece remelting that the location information of workpiece includes workpiece remelting.
Further, the location information acquisition unit includes two close switches and third isolation circuit；Two institutes
It states and is connect close to switch by the third isolation circuit with the single-chip microcontroller；Along the direction that moves horizontally of workpiece, two institutes
State the two sides that the coreless induction furnace is located at close to switch；One of them is described close to the starting switched for detecting workpiece remelting
Position, another described close switch is for the final position after detecting workpiece remelting.
Further, it is additionally provided with communication unit and host computer in the workpiece alloy coating remelting control system, it is described
Single-chip microcontroller is communicated by the communication unit with the host computer；The single-chip microcontroller sends out the real time data in reflow process
Give the host computer；The host computer sends control instruction to the single-chip microcontroller.
According to the second aspect of the embodiment of the present application, present invention also provides a kind of workpiece alloy coating remelting controlling parties
Method comprising following steps:
Workpiece alloy coating remelting control system is initialized；
Control coreless induction furnace starting；
Judge whether to receive strong heating instructions, if receiving strong heating instructions, workpiece is carried out to force heat；Otherwise, weight
Newly judge whether to receive strong heating instructions；
Judge whether to receive reset instruction, if receiving reset instruction, controls workpiece and return to the origin position before remelting；
Otherwise, it is determined whether receiving preheating instruction；
If receiving preheating instruction, workpiece is preheated；Otherwise, it rejudges whether to receive and forces heat and refer to
It enables.
Workpiece is carried out to force heat；
Control coreless induction furnace is closed after the completion of forcing heat.
It is further, described that preheating detailed process is carried out to workpiece are as follows:
Read the temperature of the collected workpiece surface of infrared temperature sensor；
Judge whether the temperature of workpiece surface reaches preheating setting value；It is set if the temperature of workpiece surface reaches preheating
Definite value then controls stepper motor and is displaced according to default stride, and stepper motor drives workpiece mobile by workbench；Otherwise,
Re-read the temperature of the collected workpiece surface of infrared temperature sensor；
Judge whether workpiece covers whole process, if it is, forcing thermal process into workpiece；Otherwise, workpiece table is rejudged
Whether the temperature of layer reaches preheating setting value.
The technical solution that embodiments herein provides can include the following benefits: the application can be to oil pumping in oil fields
Bar box cupling surface layer alloy coat carries out remelting control, is heated using high-frequency induction formula heating furnace to workpiece surface alloy coat
And fusing, workpiece surface temperature information is acquired by infrared temperature sensor, when temperature reaches when technique requires to stepper motor
Control instruction is issued, drives workbench to realize the rotation and horizontal displacement of workpiece by stepper motor, completes the automatic of workpiece remelting
Control.The application controls precision height, under the premise of saving human resources, can be improved the yield rate of workpiece, remelting yield rate
Up to 97% or more, the problems such as being able to solve to manually-operated dependence.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Fig. 1 be a kind of workpiece alloy coating remelting control system shown according to an exemplary embodiment schematic diagram it
One.
Fig. 2 is a kind of workpiece alloy coating remelting control system medium-high frequency furnace unit shown according to an exemplary embodiment
Schematic diagram.
Fig. 3 is temperature acquisition list in a kind of workpiece alloy coating remelting control system shown according to an exemplary embodiment
The schematic diagram of member.
Fig. 4 is stepper motor list in a kind of workpiece alloy coating remelting control system shown according to an exemplary embodiment
The schematic diagram of member.
Fig. 5 be a kind of workpiece alloy coating remelting control system shown according to an exemplary embodiment schematic diagram it
Two.
Fig. 6 is a kind of flow chart of workpiece alloy coating remelting control method shown according to an exemplary embodiment.
Fig. 7 is that workpiece preheats in a kind of workpiece alloy coating remelting control method shown according to an exemplary embodiment
Flow chart.
Fig. 8 is that workpiece forces heat in a kind of workpiece alloy coating remelting control method shown according to an exemplary embodiment
Flow chart.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
Fig. 1 is a kind of schematic diagram of workpiece alloy coating remelting control system shown according to an exemplary embodiment.Such as
Shown in Fig. 1, the application workpiece alloy coating remelting control system includes single-chip microcontroller 1 and the coreless induction furnace list connecting with single-chip microcontroller 1
Member 2, temperature collecting cell 3 and stepper motor unit 4.Wherein, on the base, single-chip microcontroller 1 controls the fixed setting of coreless induction furnace unit 2
Coreless induction furnace unit 2 is preheated to workpiece alloy coating and is forced heat.In reflow process, coreless induction furnace unit 2 uses constant function
Rate heats workpiece.Temperature collecting cell 3 is arranged at coreless induction furnace unit 2, is used to acquire the temperature of workpiece surface in real time
It spends and is sent to single-chip microcontroller 1.Stepper motor unit 4 connects a workbench, and workbench is arranged on a pedestal.In single-chip microcontroller 1
Under control, stepper motor unit 4 is able to drive workbench relative to base motion.
The course of work of the application workpiece alloy coating remelting control system are as follows: after system is opened, single-chip microcontroller 1 controls stepping
Electric motor units 4 act, and stepper motor unit 4 drives workpiece to move horizontally while rotation by workbench.Workbench drives
During workpiece passes through coreless induction furnace unit 2, single-chip microcontroller 1 controls coreless induction furnace unit 2 and heats to workpiece.In coreless induction furnace unit
During 2 pairs of workpiece heat, single-chip microcontroller 1 controls the temperature that temperature collecting cell 3 acquires workpiece surface in real time.Temperature is adopted
Collect unit 3 and collected temperature is sent to single-chip microcontroller 1.Single-chip microcontroller 1 by the temperature received and preset process warm angle value into
Row compares, and when the temperature of workpiece surface reaches preset process warm angle value, single-chip microcontroller 1 controls 4 band of stepper motor unit and starts building
Make platform movement, to complete the whole process of workpiece remelting by automatically controlling.
Specifically, workpiece can be oil pumping in oil fields bar box cupling, and carrying out remelting control to workpiece alloy coating is specially to oil
Field rod collar surface layer alloy coat carries out remelting control.
The application passes through setting single-chip microcontroller 1, coreless induction furnace unit 2, temperature collecting cell 3 and stepper motor unit 4, single-chip microcontroller
1 control coreless induction furnace unit 2 is preheated to workpiece and is forced heat, the temperature that single-chip microcontroller 1 acquires in real time according to temperature collecting cell 3
Stepper motor 43 in degree information control stepper motor unit 4 acts, and stepper motor 43 drives workpiece to realize certainly by workbench
Turn and move horizontally, complete the reflow process of workpiece, the application can be improved under the premise of saving human cost workpiece at
Product rate.
In the present embodiment, as shown in Fig. 2, coreless induction furnace unit 2 includes sequentially connected first isolation circuit 21, reverser
22, relay 23 and coreless induction furnace 24.The control signal that single-chip microcontroller 1 exports inputs reverser 22 by the first isolation circuit 21, instead
+ 3V voltage is converted into+24V power voltage supply to device 22.Signal control relay 23 is controlled to act.Relay 23 and coreless induction furnace 24
Connection.Specifically, the stopping control line of the normally-closed contact connection coreless induction furnace 24 of relay 23, the normally opened contact connection of relay 23
The beginning control line of coreless induction furnace 24, the common of relay 23 are connected with the common end control line of coreless induction furnace 24.In order to prevent
The reversed induced electromotive force that 23 coil of relay generates interferes front-end circuit, in two input terminal parallel connections one of relay 23
A backward dioded to shield.
Specifically, coreless induction furnace 24 uses high-frequency induction formula heating furnace, and high-frequency induction formula heating furnace has heating speed fast, and
The advantages that power is controllable.The shape and workpiece of induction coil in high-frequency induction formula heating furnace carry out matching setting.
Specifically, the first isolation circuit 21 uses the LMDS Light Coupled Device of model TLP521, which can enhance circuit
Safety, reduce the interference of voltage.Reverser 22 uses high voltage, the high current Darlington battle array of model ULN2003
Column.Relay 23 uses the relay 23 of model DS1E-NIL-DC24V.
In the present embodiment, as shown in figure 3, temperature collecting cell 3 includes infrared temperature sensor 31, sample resistance 32 and electricity
Press follower 33.Collected temperature signal is converted into current signal and output with isolation by infrared temperature sensor 31.It is defeated
The range of current signal out is 4~20mA.Sample resistance 32 is converted into the electricity of 0.6V~3V after being sampled to current signal
Press signal.Voltage signal inputs the ADC (Analog-to-Digital in single-chip microcontroller 1 by voltage follower 33
Converter, analog-digital converter).Wherein, setting voltage follower 33 is voltage signal continued depletion in order to prevent, strengthen every
From effect.
The temperature monitoring of workpiece surface alloy coat is the core link of entire remelting control process, directly decides work
The success or not of part remelting.Workpiece surface maximum temperature is up to nearly thousand degrees Celsius in reflow process, while needing smaller at one
Within the temperature range of complete corresponding process flow, and infrared temperature sensor 31 is selected to can satisfy requirements above.Infrared temperature
The range with higher of sensor 31 and precision are spent, and has the function of preferable signal isolation, complicated work can be suitable for
Environment.Specifically, infrared temperature sensor 31 be arranged at coreless induction furnace 24, to by coreless induction furnace 24 workpiece surface temperature into
Row acquisition in real time.
In the present embodiment, as shown in figure 4, stepper motor unit 4 includes the second isolation circuit 41, driver 42, stepping electricity
Machine 43 and isolating transformer.Single-chip microcontroller 1 passes sequentially through the second isolation circuit 41 and driver 42 is connect with stepper motor 43.Isolation
Transformer is connect with driver 42, is carried out for driver 42 independently-powered.
In reflow process, the horizontal displacement of workpiece drags workbench by stepper motor 43 to complete, and this requires stepping electricity
Machine 43 has faster response speed, higher control precision and lesser vibration and noise, therefore, stepping electricity in the application
Machine 43 mixes formula stepper motor 43 using five.
In order to meet requirement of the system to 43 response speed of stepper motor, prevent stepper motor 43 from overshoot, step-out etc. occur
Failure, the pulse drive signal that single-chip microcontroller 1 exports is using raising frequency-constant frequency-frequency reducing mode output.
Isolating transformer carries out independently-powered for driver 42.Specifically, the casing of stepper motor 43 and driver 42 connects
Ground terminal is connect with protection the earth, guarantees the safe operation of stepper motor 43.Pass through whole/half step dial-up of 42 plate side of driver
Switch sets half step operational mode for stepper motor 43, reduces the vibration of stepper motor 43, can further increase workpiece
Displacement accuracy.
In some embodiments, as shown in figure 5, being additionally provided with position letter in the application workpiece alloy coating remelting control system
Cease acquisition unit 5.Location information acquisition unit 5 is connect with single-chip microcontroller 1.Location information acquisition unit 5 is used to acquire the position of workpiece
Confidence breath.The initial position and the final position after workpiece remelting that the location information of workpiece includes workpiece remelting.After workpiece remelting
Final position be also origin position before workpiece remelting.
Specifically, location information acquisition unit 5 includes two close switches and third isolation circuit.Two equal close to switch
It is connect by third isolation circuit with the I/O of single-chip microcontroller 1 mouth.Along the direction that moves horizontally of workpiece, two close switch difference positions
In the two sides of coreless induction furnace 24., close to the initial position switched for detecting workpiece remelting, another is used close to switch for one of them
Final position after detecting workpiece remelting.When the signal that will test close to switch of detection workpiece remelting initial position is sent
When to single-chip microcontroller 1, single-chip microcontroller 1 controls coreless induction furnace unit 2 and heats to workpiece, the control of single-chip microcontroller 1 step during heating
Working table movement is driven into electric motor units 4.The signal that will test close to switch of final position after detecting workpiece remelting
When being sent to single-chip microcontroller 1, single-chip microcontroller 1, which controls stepper motor unit 4, to be stopped.
In some embodiments, as shown in figure 5, being additionally provided with communication unit in the application workpiece alloy coating remelting control system
Member 6 and host computer 7, single-chip microcontroller 1 are communicated by communication unit 6 with host computer 7.Single-chip microcontroller 1 will be real-time in reflow process
Data are sent to host computer 7.Real time data in reflow process includes coating skin temperature, 43 operating status of stepper motor, height
The field datas such as 24 operating status of frequency furnace and workpiece sequence number.Host computer 7 is monitored the real time data received, when upper
When machine 7 judges that data occur abnormal, host computer 7 sends control instruction to single-chip microcontroller 1, entangles to the control process of system
Just.
Specifically, communication unit 6 includes communication module and 485 buses.Communication interface circuit uses high-performance, with isolation
485 interface chip MAX1480B.In Anti-interference Design, which carries transformer, between the power supply system of conversion signal
Electrical isolation can realize error free transmission when transmission rate is 250kbps；On the other hand, using twisted-pair shielded wire as biography
Defeated medium is to balance out the electromagnetic interference signal sensed.
In some embodiments, as shown in figure 5, also setting up input unit in the application workpiece alloy coating remelting control system
8, input unit 8 is connect with single-chip microcontroller 1.Input unit 8 is used to input operation instruction instruction to single-chip microcontroller 1.Input unit 8 can be with
Using the virtual key in touch screen, physical button can also be used.Specifically, when input unit 8 is using physical button, tool
Body includes forcing hot key, pre-add hot key and reset key.Single-chip microcontroller 1 processes work according to the affected instruction execution received accordingly
Sequence.
As shown in fig. 6, being based on workpiece alloy coating remelting control system, present invention also provides a kind of workpiece alloy coatings
Remelting control method comprising following main control process:
S1, workpiece alloy coating remelting control system is initialized.
It starts to work, reads the data in memory and simultaneously system is initialized, including is house dog, system clock, fixed
When device, interruption, crossbar switch, I/O input and output, UART0 and UART1 etc..
S2, control coreless induction furnace 24 start.
S3, judgement force whether hot key is pressed, if key_h_start=1, then it represents that force hot key and press, into step
Rapid S8；Otherwise, indicate that forcing hot key does not press, then enters step S4.
S4, judge whether reset key is pressed, if key_move=1, then it represents that reset key pressing, enter step S5；It is no
Then, it indicates that reset key is not pressed, enters step S6.
S5, control workpiece return to the origin position before remelting.
S6, judge whether pre-add hot key is pressed, if key_start=1, then it represents that preheating key pressing enters step
S7；Otherwise, indicate that pre-add hot key is not pressed, return step S3.
S7, workpiece is preheated.Wherein, preheating temperature is at 650 ° or so.
S8, workpiece is carried out to force heat.Wherein, the temperature for forcing heat is 950 °~1000 °.
S9, control coreless induction furnace 24 are closed.
In above-mentioned steps S7, as shown in fig. 7, carrying out preheating detailed process to workpiece are as follows:
S71, the temperature for reading the collected workpiece surface of infrared temperature sensor 31；
S72, judge whether the temperature of workpiece surface reaches preheating setting value；
If the temperature of workpiece surface reaches preheating setting value, S73 is entered step；Otherwise, return step S71.
S73, control stepper motor 43 are displaced according to default stride, and stepper motor 43 drives workpiece to move by workbench
It is dynamic.
S74, judge whether workpiece covers whole process, if it is, returning to main control process；Otherwise, return step S72.
In above-mentioned steps S8, the process for carrying out forcing heat to workpiece is identical as preheating process is carried out to workpiece.One
In a specifically embodiment, as shown in figure 8, force to workpiece the detailed process of heat are as follows:
S81, default the last the first heat set points Tem1, the last the second heat set points Tem2 and the strong heat set points of third
Tem3；First movement is preset apart from setting value Dis1, the second moving distance setting value Dis2 and third moving distance setting value
Dis3.Wherein, Dis1+Dis2+Dis3=Workpiece length.By workpiece be divided into three sections carry out segmentation force heat.Number i is set, it is secondary
Number i round numbers, i=0,1,2.
S82, the temperature for reading the collected workpiece surface of infrared temperature sensor 31.
S83, judge whether the temperature of workpiece surface reaches the last the first heat set points Tem1；If the temperature of workpiece surface
Reach the last the first heat set points Tem1, then enters step S84；Otherwise return step S82.
S84, control stepper motor 43 are displaced according to default stride, and stepper motor 43 drives workpiece to move by workbench
It is dynamic.
S85, judge whether workpiece covers first movement apart from setting value Dis1, if it is, entering step S86；Otherwise,
Return step S82.
S86, number i add 1.
S87, judge whether number i is greater than 2, if it is, terminating；Otherwise, return step S82.
The application workpiece alloy coating remelting control method can movement to workpiece and heating be precisely controlled, complete
The automatic control of workpiece remelting solves traditional remelting processing existing problems in manual operation.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application
Embodiment person of ordinary skill in the field understood.
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
In addition, can integrate in a central processing module in each functional unit in each embodiment of the application,
It can be each unit to physically exist alone, can also be integrated in two or more units in a module.It is above-mentioned integrated
Module both can take the form of hardware realization, can also be realized in the form of software function module.The integrated mould
If block is realized and when sold or used as an independent product in the form of software function module, it also can store and counted at one
In calculation machine read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of workpiece alloy coating remelting control system, which is characterized in that it includes single-chip microcontroller and connects with the single-chip microcontroller
Coreless induction furnace unit, temperature collecting cell and the stepper motor unit connect；The single-chip microcontroller control coreless induction furnace unit is to workpiece alloy
Coating is heated；The temperature collecting cell acquires the temperature of workpiece surface in real time and is sent to the single-chip microcontroller；The list
The temperature received is compared by piece machine with preset process warm angle value, and controls the stepper motor list according to comparison result
Metaaction, the stepper motor unit drive workpiece to realize rotation and move horizontally by workbench；The single-chip microcontroller is configured
Are as follows:
Control system is initialized；
Control coreless induction furnace starting；
Judge whether to receive strong heating instructions, if receiving strong heating instructions, workpiece is carried out to force heat；Otherwise, sentence again
It is disconnected whether to receive strong heating instructions；
Judge whether to receive reset instruction, if receiving reset instruction, controls workpiece and return to the origin position before remelting；It is no
Then, judge whether to receive preheating instruction；
If receiving preheating instruction, workpiece is preheated；Otherwise, it rejudges and whether receives strong heating instructions；
Workpiece is carried out to force heat；
Control coreless induction furnace is closed after the completion of forcing heat；
It is wherein, described that preheating detailed process is carried out to workpiece are as follows:
Read the temperature of the collected workpiece surface of infrared temperature sensor；
Judge whether the temperature of workpiece surface reaches preheating setting value；If the temperature of workpiece surface reaches preheating setting
Value, then control stepper motor and be displaced according to default stride, and stepper motor drives workpiece mobile by workbench；Otherwise, weight
The new temperature for reading the collected workpiece surface of infrared temperature sensor；
Judge whether workpiece covers whole process, if it is, forcing thermal process into workpiece；Otherwise, workpiece surface is rejudged
Whether temperature reaches preheating setting value.
2. workpiece alloy coating remelting control system according to claim 1, which is characterized in that the coreless induction furnace unit packet
Include sequentially connected first isolation circuit, reverser, relay and coreless induction furnace；The control signal of the single-chip microcontroller output passes through institute
It states the first isolation circuit and inputs the reverser, control signal controls the actuating of relay；The normally-closed contact of the relay
The stopping control line of the coreless induction furnace is connected, the normally opened contact of the relay connects the beginning control line of the coreless induction furnace, institute
The common for stating relay is connected with the common end control line of the coreless induction furnace.
3. workpiece alloy coating remelting control system according to claim 2, which is characterized in that the coreless induction furnace is using high
Frequency induction type heating furnace, the shape and workpiece of the induction coil in the high-frequency induction formula heating furnace carry out matching setting.
4. workpiece alloy coating remelting control system according to claim 1, which is characterized in that the temperature collecting cell
Including infrared temperature sensor, sample resistance and voltage follower；The infrared temperature sensor is by collected temperature signal
It is converted into current signal and output with isolation；The sample resistance is converted into voltage signal after being sampled to current signal；
Voltage signal inputs the analog-digital converter in the single-chip microcontroller by the voltage follower.
5. workpiece alloy coating remelting control system according to claim 1, which is characterized in that the stepper motor unit
Including the second isolation circuit, driver, stepper motor and isolating transformer；The single-chip microcontroller passes sequentially through the second isolation electricity
Road and driver are connect with the stepper motor；The isolating transformer is connect with driver, is carried out for the driver independent
Power supply；
The stepper motor mixes formula stepper motor using five, and the pulse drive signal of the single-chip microcontroller output uses raising frequency-
The output of constant frequency-frequency reducing mode.
6. workpiece alloy coating remelting control system according to claim 1, which is characterized in that the workpiece alloy coating
Location information acquisition unit is additionally provided in remelting control system, the location information acquisition unit is connect with single-chip microcontroller；It is described
Location information acquisition unit is used to acquire the location information of workpiece；The location information of the workpiece includes the start bit of workpiece remelting
It sets and the final position after workpiece remelting.
7. workpiece alloy coating remelting control system according to claim 6, which is characterized in that the location information acquisition
Unit includes two close switches and third isolation circuit；Two close switches pass through the third isolation circuit and institute
State single-chip microcontroller connection；Along the direction that moves horizontally of workpiece, two two sides that the coreless induction furnace is located at close to switch；Its
In one it is described close to switch initial position for detecting workpiece remelting, another it is described close to switching for detecting workpiece weight
Final position after molten.
8. workpiece alloy coating remelting control system according to claim 1, which is characterized in that the workpiece alloy coating
Communication unit and host computer are additionally provided in remelting control system, the single-chip microcontroller passes through the communication unit and the host computer
It is communicated；Real time data in reflow process is sent to the host computer by the single-chip microcontroller；The host computer is to the list
Piece machine sends control instruction.
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