CN108356082B - Pass milling train processing temperature real-time monitoring record and error calibration method - Google Patents
Pass milling train processing temperature real-time monitoring record and error calibration method Download PDFInfo
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- CN108356082B CN108356082B CN201810227887.6A CN201810227887A CN108356082B CN 108356082 B CN108356082 B CN 108356082B CN 201810227887 A CN201810227887 A CN 201810227887A CN 108356082 B CN108356082 B CN 108356082B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
Abstract
The invention discloses a kind of pass milling train processing temperature real-time monitoring record and error calibration methods, its device used includes pass rolling mill input mouth temperature detecting unit, pass milling train discharge port temperature detecting unit and remote monitoring terminal, and pass rolling mill input mouth temperature detecting unit includes sequentially connected inlet temperature sensor, feed inlet analog to digital conversion circuit module, feed inlet microprocessor and feed inlet communication module；Pass milling train discharge port temperature detecting unit includes sequentially connected discharge port temperature sensor, discharge port analog to digital conversion circuit module, discharge port microprocessor and discharge port communication module；Its method is comprising steps of one, parameter setting and calculating, two, real time data acquisition and processing, three, the temperature curve at reduction roll.The present invention can be realized metering workpieces processing quantity, complete the purpose that workpiece Qualification determines, False Rate is low, reduces artificial treatment complexity, and practical, using effect is good, convenient for promoting the use of.
Description
Technical field
The invention belongs to milling train processing technique fields, and in particular to a kind of pass milling train processing temperature real-time monitoring record with
Error calibration method.
Background technique
Pass milling train is that several annular grooves are arranged on roll surface and form pass for one kind, to roll a set pattern
The mechanical equipment of lattice metal stock.In general, it is manually to roll that groove rolling scene, which using non-full-automatic processing lathe, that is, passes through,
Roller processes mouth feeding, and workpiece is passed through pass by the dragging of roll after feeding.It is rolled when processing temperature is too high or too low
Workpiece be rejected product.There are uncertain human factors by the way of in the prior art, moreover, because of nothing in process
Method checks work pieces process temperature, can not judge the qualified or not of workpiece by directly observing workpiece after processing, so that after processing
There are more rejected product in workpiece, the quality for producing product is difficult to ensure.Therefore, in process to processing temperature into
Row real-time monitoring and record, for judging that the Qualification of workpiece is extremely important.
Currently, common pass rolling mill temperature monitoring mainly uses the single infrared ray of installation at pass rolling mill input mouth to survey
The real-time taking temperature of warm instrument, live single-chip microcontroller timing receipt are sent, long-range host computer receives display real time temperature system and realizes pair
The monitoring of work pieces process temperature saves temperature curve when work pieces process finally with graphic form, should finally by manual analysis
Temperature curve realizes metering piece count and determines whether product is qualified, and this method is judges whether qualification provides one to workpiece
Fixed foundation.But it since the infrared thermometer that such monitoring uses is non-contact type infrared thermometer, is only limitted to measure
Object external temperature, is not capable of measuring inside workpiece and there are temperature when barrier, infrared radiation thermometer measurement is work before processing
The temperature value of part is not the temperature value that workpiece is between roll, and due to roll dragging workpiece pass through pass when, workpiece will appear
It swings, i.e., the temperature that infrared thermometer measures is lower than workpiece actual temperature, cannot react the actual temperature of workpiece, this will occur
It can not judge substandard product, or the problem of a large amount of qualified products are mistaken for substandard product.So existing method is only
It realizes and the acquisition of pass rolling mill input mouth temperature information and curve display is saved, do not measure workpiece and be in practical temperature between roll
Degree is not implemented software to the correction of " falseness " data, the reduction of real curve and the post-processing of temperature data, can only pass through the later period
Manual analysis temperature curve is realized to the metering of piece count and the judgement of rejected product, and " training off " phenomenon easily influences to determine knot
Fruit；Moreover, the temperature data amount that existing method stores is larger, curve need to repeatedly be analyzed when curve and could be processed by checking
Piece count, qualification determination result etc. have inconvenience, and large labor intensity, and time-consuming and laborious, False Rate is high.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of structure letter
Single, design is rationally, practical, using effect good pass milling train processing temperature real-time monitoring record and error correction device.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of pass milling train processing temperature is supervised in real time
Survey record and error correction device, which is characterized in that including pass rolling mill input mouth temperature detecting unit, pass milling train discharge port
Temperature detecting unit and remote monitoring terminal, the pass rolling mill input mouth temperature detecting unit includes sequentially connected feed inlet
Temperature sensor, feed inlet analog to digital conversion circuit module, feed inlet microprocessor and feed inlet communication module, the feed inlet temperature
The normal position of pass rolling mill input mouth is arranged in degree sensor；The pass milling train discharge port temperature detecting unit include according to
Discharge port temperature sensor, discharge port analog to digital conversion circuit module, discharge port microprocessor and the discharging port communications mould of secondary connection
The normal position of pass milling train discharge port is arranged in block, the discharge port temperature sensor；The feed inlet communication module and
Discharge port communication module connects with remote monitoring terminal.
Above-mentioned pass milling train processing temperature real-time monitoring record and error correction device, it is characterised in that: the charging
Mouth temperature sensor and discharge port temperature sensor are infrared temperature sensor.
Above-mentioned pass milling train processing temperature real-time monitoring record and error correction device, it is characterised in that: the charging
Mouth microprocessor and discharge port microprocessor are DSP digital signal processor DSP28335, the feed inlet analog-to-digital conversion electricity
Road module is integrated in feed inlet microprocessor internal, and the discharge port analog to digital conversion circuit module is integrated in discharge port microprocessor
It is internal.
Above-mentioned pass milling train processing temperature real-time monitoring record and error correction device, it is characterised in that: the charging
Port communications module and discharge port communication module are RS-485 communication module.
Above-mentioned pass milling train processing temperature real-time monitoring record and error correction device, it is characterised in that: described long-range
Monitor terminal is industrial personal computer.
The present invention also provides a kind of method and step is simple, design rationally, can be realized metering workpieces processing quantity, complete
The purpose that workpiece Qualification determines, False Rate is low, and the pass milling train processing temperature for reducing artificial treatment complexity is supervised in real time
Survey record and error calibration method, which is characterized in that method includes the following steps:
Step 1: parameter setting and calculating, detailed process are as follows:
The environment temperature T of pass milling train when step 101, setting are without processingc, gone out by pass rolling mill input mouth to pass milling train
The maximum temperature drop Δ T of the material mouth and maximum value L of the be capable of processing Workpiece length of pass milling trainmaxWith minimum value Lmin；This batch is set
The linear velocity v of pass rolling mill roll, the length l of institute's workpieces processing, the processing temperature upper limit T when secondary processingmax, processing temperature lower limit
Tmin, and the sampling time t of remote monitoring terminal is sets；
Step 102, according to formulaCalculate workpiece qualification determination offset temperatures value TΔ, according to formulaCalculate work pieces process maximum time tmax, according to formulaCalculate work pieces process minimum duration tmin, according to
FormulaCalculate the single work pieces process duration Δ t of this batch；Wherein,It indicates to be rounded downwards；
Step 103, according to formulaComputation delay time td, according to formula
It calculates maximum value and is segmented holding time tΔ；Wherein,Expression rounds up；
Step 2: real time data acquisition and processing, detailed process are as follows:
Step 201, when people by workpiece be sent into pass rolling mill input mouth when, inlet temperature sensor real-time measurement pass rolls
The temperature T of machine inleta, the temperature T of discharge port temperature sensor real-time measurement discharge portb, and by TaAnd TbAnd Tmin-TΔThan
Compared with；
Work as Ta< Tmin-TΔAnd Tb< Tmin-TΔWhen, it is judged as that no work pieces process, record temperature value are
When first appearing Ta> Tmin-TΔWhen, the moment is that the 1st workpiece starts to process moment t to record at this timea1, and by pass
The temperature data of rolling mill input mouth is stored in temperature array A；When T occurs in i-tha> Tmin-TΔWhen, judge moment and last time at this time
There is Ta> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timea> Tmin-TΔAt the time of difference
Value is less than tminWhen, the temperature at moment at this time and pass rolling mill input mouth is not recorded；When at this time, there is T in moment and last timea
> Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece starts to process moment t to record at this timeai, and by pass
The temperature data of rolling mill input mouth is stored in temperature array A；Wherein, the value of i is the natural number greater than 1；
In tax~tax+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, it records the moment at this time and starts to prolong
Shi Jilu uses delay temperature array AdThe temperature data of pass rolling mill input mouth is temporarily recorded, when in delay time td
It is interior to occur being more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array A in the last one
Temperature value takes mean value, as delay time tdThe temperature value of the pass rolling mill input mouth of interior all sampling instant points is stored in temperature number
Group A；As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array A that is delayeddIt closes
And into temperature array A；Wherein, the value of x is the natural number greater than 1, taxStart to process the moment for x-th of workpiece；
In tax+Δt-td~taxIn+Δ t the period, when in tax+Δt-tdMoment last time delay record not up to prolongs
When time tdWhen, by the temperature T of pass rolling mill input mouthaThe environment temperature T of pass milling train when with without processingcIt is compared, when
Ta-TcWhen > 200, it is judged as that the maximum temperature in this time not entirely through pass rolling mill input mouth, is stored in temperature by workpiece
In array A, work as Ta-TcWhen≤200, it is judged as in talast+tdMoment, workpiece have passed through pass rolling mill input mouth completely；Its
In, talastFor in tax~tax+Δt-tdThe time that last time delay record starts in period；When in tax+Δt-tdMoment
Last time delay record has reached delay time tdWhen, by the temperature T of pass rolling mill input mouthaWith Tmin-TΔCompare, works as Ta>
Tmin-TΔWhen, the temperature data of pass rolling mill input mouth is stored in temperature array A, until Ta< Tmin-TΔ, work as Ta< Tmin-TΔ
When, it is judged as that workpiece has passed through pass rolling mill input mouth completely；
Step 202, when workpiece is dragged to below discharge port temperature sensor by roll, TbStart to be greater than Tmin-TΔ；
When first appearing Tb> Tmin-TΔWhen, the moment is that the 1st workpiece terminates to process moment t to record at this timeb1, and by pass
The temperature data of milling train discharge port is stored in temperature array B；When T occurs in i-thb> Tmin-TΔWhen, judge moment and last time at this time
There is Tb> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timeb> Tmin-TΔAt the time of difference
Value is less than tminWhen, the temperature at moment at this time and pass milling train discharge port is not recorded；When at this time, there is T in moment and last timeb
> Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece terminates to process moment t to record at this timebi, and by pass
The temperature data of milling train discharge port is stored in temperature array B；Wherein, the value of i is the natural number greater than 1；
In tbx~tbx+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, it records the moment at this time and starts to prolong
Shi Jilu uses delay temperature array BdThe temperature data of pass milling train discharge port is temporarily recorded, when in delay time td
It is interior to occur being more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array B in the last one
Temperature value takes mean value, as delay time tdThe temperature value of the pass milling train discharge port of interior all sampling instant points is stored in temperature number
Group B；As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array B that is delayeddIt closes
And into temperature array B；Wherein, the value of x is the natural number greater than 1, tbxTerminate to process the moment for x-th of workpiece；
In tbx+Δt-td~tbxIn+Δ t the period, when in tbx+Δt-tdMoment delay record is not up to delay time td
When, by the temperature T of pass milling train discharge portbThe environment temperature T of pass milling train when with without processingcIt is compared, works as Tb-Tc> 200
When, it is judged as that not entirely through pass milling train discharge port, the maximum temperature in this time is stored in temperature array B for workpiece,
Work as Tb-TcWhen≤200, it is judged asMoment, workpiece have passed through pass milling train discharge port completely；Wherein, tblastFor
In tbx~tbx+Δt-tdThe time that last time delay record starts in period；When in tbx+Δt-tdMoment delay record is
Reach delay time tdWhen, by the temperature T of pass milling train discharge portbWith Tmin-TΔCompare, works as Tb> Tmin-TΔWhen, pass is rolled
The temperature data of machine discharge port is stored in temperature array B, until Tb< Tmin-TΔ, work as Tb< Tmin-TΔWhen, it is judged as that workpiece is complete
Pass milling train discharge port is passed through；
From tbxMoment, firstly, to the temperature T of the corresponding pass rolling mill input mouth of each sampling instantaIt is rolled with pass
The temperature T of machine discharge portbIt is compared, as 0 < Ta-TbIt, will when≤Δ TRemember as the sampling instant temperature
It records to final roll rolling temperature array；Work as Ta-TbIt, will when > Δ TAs the sampling instant thermograph to final
Roll rolling temperature array；Work as Ta-TbIt, will when < 0Temperature is rolled as the sampling instant thermograph to final roll
Degree group；Then, using every tΔThe method that period is maximized is to the temperature data in final roll rolling temperature array
It is saved；
Step 203, by the maximum temperature value of acquirement respectively with processing temperature upper limit TmaxWith processing temperature lower limit TminThan
Compared with, qualification is determined as to the workpiece that whole numerical value is greater than lower limit and is less than the upper limit, be otherwise determined as it is unqualified, until tax+ Δ t is complete
Determine that processing terminate for workpiece data, and piece count adds 1 at last time record.
Above-mentioned method, it is characterised in that: further include the steps that the temperature curve at fitting reduction roll after step 2
Three, detailed process are as follows:
?ExtremelyPeriod, curve when being unprocessed workpiece, temperature
Degree is environment temperature and is held essentially constant, with the environment temperature T without pass milling train when processingcFitting；Wherein, ta(x-1)It is
X-1 workpiece starts to process moment, tb(x-1)Terminate to process the moment for -1 workpiece of xth；
?ExtremelyPeriod, temperature curve when being workpieces processing, using depositing
The temperature of each section value maximum value of storage, the temperature value information that finally will acquire are carried out curve fitting by interpolation method, are corrected
The true temperature curve in pass milling train process afterwards.
Above-mentioned method, it is characterised in that: the value of Δ T described in step 101 is 20 DEG C.
Compared with the prior art, the present invention has the following advantages:
1, pass milling train processing temperature real-time monitoring of the invention record and error correction device, set using modular
Meter, structure is simple, and design is reasonable.
2, the present invention realizes metering processing work by pass milling train processing temperature real-time monitoring record and error calibration method
Number of packages amount, and correct erroneous judgement of the infrared temperature sensor because of piece count caused by " training off ", reduction at inlet port and outlet port
Due to hardware it is insufficient caused by the low problem of qualification rate.
3, the present invention is calculated at different moments roll by the judgement to pass rolling mill input mouth and discharge port temperature
Temperature, the temperature of acquisition is accurate.
4, pass milling train processing temperature real-time monitoring of the invention record and error calibration method, can efficiently accomplish workpiece
The judgement of Qualification, False Rate are low.
5, pass milling train processing temperature real-time monitoring of the invention record and error calibration method, additionally it is possible to which fitting reduction is rolled
It is multiple to reduce artificial treatment for temperature curve at roller, the true temperature curve in pass milling train process after being corrected
Miscellaneous degree.
In conclusion the present invention has rational design, it can be realized metering workpieces processing quantity, complete the judgement of workpiece Qualification
Purpose, False Rate is low, reduces artificial treatment complexity, overcomes infrared in existing pass rolling mill temperature monitoring and recording system
The untrue property of temperature caused by when temperature and workpiece are swung when the non-practical work piece of temperature measurer taking temperature is between roll, practicability
By force, using effect is good, convenient for promoting the use of.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the schematic block circuit diagram of pass milling train processing temperature real-time monitoring of the present invention record and error correction device.
Fig. 2 is the method flow block diagram of pass milling train processing temperature real-time monitoring of the present invention record and error calibration method.
Fig. 3 is the inlet temperature curve graph of the invention containing radiation temperature.
Fig. 4 is that the present invention filters out the inlet temperature curve graph after radiation temperature.
Fig. 5 is four kinds of situation maps of inlet temperature curve of the present invention.
Fig. 6 is the temperature profile after filtering wave by prolonging time of the present invention.
Fig. 7 is the filtered inlet temperature curve graph of the present invention.
Fig. 8 is the filtered discharge port temperature profile of the present invention.
Fig. 9 is temperature profile at the roll of the invention obtained after treatment.
Figure 10 is the true temperature curve graph in the pass milling train process after present invention correction.
Description of symbols:
1-inlet temperature sensor；2-feed inlet analog to digital conversion circuit modules；
3-feed inlet microprocessors；4-feed inlet communication modules；
5-remote monitoring terminals；6-discharge port temperature sensors；
7-discharge port analog to digital conversion circuit modules；8-discharge port microprocessors；
9-discharge port communication modules.
Specific embodiment
As shown in Figure 1, pass milling train processing temperature real-time monitoring record of the invention and error correction device, including pass
Rolling mill input mouth temperature detecting unit, pass milling train discharge port temperature detecting unit and remote monitoring terminal 5, the pass milling train
Inlet temperature detection unit include sequentially connected inlet temperature sensor 1, feed inlet analog to digital conversion circuit module 2, into
Hanging down for pass rolling mill input mouth is arranged in material mouth microprocessor 3 and feed inlet communication module 4, the inlet temperature sensor 1
Right above straight；The pass milling train discharge port temperature detecting unit includes sequentially connected discharge port temperature sensor 6, discharge port
Analog to digital conversion circuit module 7, discharge port microprocessor 8 and discharge port communication module 9, the discharge port temperature sensor 6 are arranged
In the normal position of pass milling train discharge port；The feed inlet communication module 4 and discharge port communication module 9 are monitored with long-range
Terminal 5 connects.
In the present embodiment, the inlet temperature sensor 1 and discharge port temperature sensor 6 are infrared temperature sensing
Device.
In the present embodiment, the feed inlet microprocessor 3 and discharge port microprocessor 8 are DSP digital signal processor
DSP28335, the feed inlet analog to digital conversion circuit module 2 are integrated in inside feed inlet microprocessor 3, the discharge port modulus
Conversion circuit module 7 is integrated in inside discharge port microprocessor 8.
In the present embodiment, the feed inlet communication module 4 and discharge port communication module 9 are RS-485 communication module.
In the present embodiment, the remote monitoring terminal 5 is industrial personal computer.
As shown in Fig. 2, pass milling train processing temperature real-time monitoring record of the invention and error calibration method, including it is following
Step:
Step 1: parameter setting and calculating, detailed process are as follows:
The environment temperature T of pass milling train when step 101, setting are without processingc(unit be DEG C), by pass rolling mill input mouth to
The maximum temperature drop Δ T of the pass milling train discharge port and maximum value L of the be capable of processing Workpiece length of pass milling trainmax(unit mm)
With minimum value Lmin(unit mm)；The linear velocity v (unit is by m/s) of pass rolling mill roll when this lots processed is set, it processes
Length l (unit mm), the processing temperature upper limit T of workpiecemax(unit is DEG C), processing temperature lower limit Tmin(unit is DEG C), and
The sampling time t of remote monitoring terminal 5 is sets(unit ms)；
In the present embodiment, the value of Δ T described in step 101 is 20 DEG C.
In the present embodiment, TcValue be 280 DEG C, LmaxValue be 1500mm, LminValue be 1000mm, v's takes
Value is 1.0m/s, and the value of l is 1200mm, TmaxValue be 1000 DEG C, TminValue be 700 DEG C, tsValue be 20ms.
Step 102, according to formulaCalculate workpiece qualification determination offset temperatures value TΔ, according to formulaCalculate work pieces process maximum time tmax, according to formulaCalculate work pieces process minimum duration tmin, according to
FormulaCalculate the single work pieces process duration Δ t of this batch；Wherein,It indicates to be rounded downwards；
In the present embodiment,
Step 103, according to formulaComputation delay time td, according to formula
It calculates maximum value and is segmented holding time tΔ；Wherein,Expression rounds up；
In the present embodiment,
Step 2: real time data acquisition and processing, detailed process are as follows:
Step 201, when people by workpiece be sent into pass rolling mill input mouth when, 1 real-time measurement pass of inlet temperature sensor
The temperature T of rolling mill input moutha, the temperature T of 6 real-time measurement discharge port of discharge port temperature sensorb, and by TaAnd TbAnd Tmin-
TΔCompare；
Work as Ta< Tmin-TΔAnd Tb< Tmin-TΔWhen, it is judged as that no work pieces process, record temperature value are
When first appearing Ta> Tmin-TΔWhen, the moment is that the 1st workpiece starts to process moment t to record at this timea1, and by pass
The temperature data of rolling mill input mouth is stored in temperature array A；When T occurs in i-tha> Tmin-TΔWhen, judge moment and last time at this time
There is Ta> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timea> Tmin-TΔAt the time of difference
Value is less than tminWhen, the temperature at moment at this time and pass rolling mill input mouth is not recorded；When at this time, there is T in moment and last timea
> Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece starts to process moment t to record at this timeai, and by pass
The temperature data of rolling mill input mouth is stored in temperature array A；Wherein, the value of i is the natural number greater than 1；
When T occurs in i-tha> Tmin-TΔWhen, there is T in moment and last time at this time for judgementa> Tmin-TΔAt the time of difference be
It is no to be greater than tmin, it is therefore an objective to " training off " data are filtered out, " training off " data may not be the temperature of work pieces process, but a upper work
There is no the radiation temperature taken away in time after part process finishing.It does so and can be avoided the workpiece that inlet temperature sensor 1 measures
Influence of the radiation temperature to part temperature profile.
As shown in figure 3, there is adjacent nearlyr temperature to be higher than Tmin-TΔTwo rectangular waves 1. 2., time interval between the two
Less than 1.0s, thus can determine whether 2. to close on radiation temperature when roll rolling, the Roller Machining workpiece caused by the temperature
Illusion.The time interval for being higher than red line for the first time because closing on two temperature is less than 1.0s, therefore can pass through tax-ta(x-1)> 1.0s item
Part filters out this section of waveform, does not remember tax.As a result as shown in Figure 4.
In tax~tax+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, it records the moment at this time and starts to prolong
Shi Jilu uses delay temperature array AdThe temperature data of pass rolling mill input mouth is temporarily recorded, when in delay time td
It is interior to occur being more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array A in the last one
Temperature value takes mean value, as delay time tdThe temperature value of the pass rolling mill input mouth of interior all sampling instant points is stored in temperature number
Group A；As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array A that is delayeddIt closes
And into temperature array A；Wherein, the value of x is the natural number greater than 1, taxStart to process the moment for x-th of workpiece；
In tax+Δt-td~taxIn+Δ t the period, when in tax+Δt-tdMoment last time delay record not up to prolongs
When time tdWhen, by the temperature T of pass rolling mill input mouthaThe environment temperature T of pass milling train when with without processingcIt is compared, when
Ta-TcWhen > 200, it is judged as that the maximum temperature in this time not entirely through pass rolling mill input mouth, is stored in temperature by workpiece
In array A, work as Ta-TcWhen≤200, it is judged as in talast+tdMoment, workpiece have passed through pass rolling mill input mouth completely；Its
In, talastFor in tax~tax+Δt-tdThe time that last time delay record starts in period；When in tax+Δt-tdMoment
Last time delay record has reached delay time tdWhen, by the temperature T of pass rolling mill input mouthaWith Tmin-TΔCompare, works as Ta>
Tmin-TΔWhen, the temperature data of pass rolling mill input mouth is stored in temperature array A, until Ta< Tmin-TΔ, work as Ta< Tmin-TΔ
When, it is judged as that workpiece has passed through pass rolling mill input mouth completely；
Step 202, when workpiece is dragged to discharge port 6 lower section of temperature sensor by roll, TbStart to be greater than Tmin-TΔ；
When first appearing Tb> Tmin-TΔWhen, the moment is that the 1st workpiece terminates to process moment t to record at this timeb1, and by pass
The temperature data of milling train discharge port is stored in temperature array B；When T occurs in i-thb> Tmin-TΔWhen, judge moment and last time at this time
There is Tb> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timeb> Tmin-TΔAt the time of difference
Value is less than tminWhen, the temperature at moment at this time and pass milling train discharge port is not recorded；When at this time, there is T in moment and last timeb
> Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece terminates to process moment t to record at this timebi, and by pass
The temperature data of milling train discharge port is stored in temperature array B；Wherein, the value of i is the natural number greater than 1；
When T occurs in i-thb> Tmin-TΔWhen, there is T in moment and last time at this time for judgementb> Tmin-TΔAt the time of difference be
It is no to be greater than tmin, it is therefore an objective to " training off " data are filtered out, " training off " data may not be the temperature of work pieces process, but a upper work
There is no the radiation temperature taken away in time after part process finishing.It does so and can be avoided the workpiece that discharge port temperature sensor 6 measures
Influence of the radiation temperature to part temperature profile.
In tbx~tbx+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, it records the moment at this time and starts to prolong
Shi Jilu uses delay temperature array BdThe temperature data of pass milling train discharge port is temporarily recorded, when in delay time td
It is interior to occur being more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array B in the last one
Temperature value takes mean value, as delay time tdThe temperature value of the pass milling train discharge port of interior all sampling instant points is stored in temperature number
Group B；As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array B that is delayeddIt closes
And into temperature array B；Wherein, the value of x is the natural number greater than 1, tbxTerminate to process the moment for x-th of workpiece；
In tbx+Δt-td~tbxIn+Δ t the period, when in tbx+Δt-tdMoment delay record is not up to delay time td
When, by the temperature T of pass milling train discharge portbThe environment temperature T of pass milling train when with without processingcIt is compared, works as Tb-Tc> 200
When, it is judged as that not entirely through pass milling train discharge port, the maximum temperature in this time is stored in temperature array B for workpiece,
Work as Tb-TcWhen≤200, it is judged asMoment, workpiece have passed through pass milling train discharge port completely；Wherein, tblastFor
In tbx~tbx+Δt-tdThe time that last time delay record starts in period；When in tbx+Δt-tdMoment delay record is
Reach delay time tdWhen, by the temperature T of pass milling train discharge portbWith Tmin-TΔCompare, works as Tb> Tmin-TΔWhen, pass is rolled
The temperature data of machine discharge port is stored in temperature array B, until Tb< Tmin-TΔ, work as Tb< Tmin-TΔWhen, it is judged as that workpiece is complete
Pass milling train discharge port is passed through；
From tbxMoment, firstly, to the temperature T of the corresponding pass rolling mill input mouth of each sampling instantaIt is rolled with pass
The temperature T of machine discharge portbIt is compared, as 0 < Ta-TbIt, will when≤Δ TRemember as the sampling instant temperature
It records to final roll rolling temperature array；Work as Ta-TbIt, will when > Δ TAs the sampling instant thermograph to final
Roll rolling temperature array；Work as Ta-TbIt, will when < 0Temperature is rolled as the sampling instant thermograph to final roll
Degree group；Then, using every tΔThe method that period is maximized is to the temperature data in final roll rolling temperature array
It is saved；
Step 203, by the maximum temperature value of acquirement respectively with processing temperature upper limit TmaxWith processing temperature lower limit TminThan
Compared with, qualification is determined as to the workpiece that whole numerical value is greater than lower limit and is less than the upper limit, be otherwise determined as it is unqualified, until tax+ Δ t is complete
Determine that processing terminate for workpiece data, and piece count adds 1 at last time record.
It is introduced by taking pass rolling mill input mouth temperature curve as an example, the specific processing method of data are as follows: after workpiece arrival
Occur wherein four kinds of situations such as Fig. 5 in 1., 2., 3., 4. shown in, carry out filtering wave by prolonging time after temperature curve it is as shown in Figure 6.
Wherein straight line is Tmin-TΔ=595 DEG C of straight line, here primarily to can be arrived the moment with intuitive judgment workpiece.
In Fig. 5, in tax~tax+ 1.1 (i.e. tax~tax+Δt-td) period, 1. extremely for sudden temperature drop in process
280 DEG C, and the retention time is less than delay time 120ms, is 2. brought down below T for temperature in workpiece processmin-TΔIt is a certain
Temperature, and the retention time be less than delay time 120ms, therefore in Fig. 5 1., 2. can by filtering wave by prolonging time to it is therein train off temperature into
Row filters out, and then removes and be determined as underproof possibility, as a result as in Fig. 6 1., 2. shown in；It is 3. temperature appearance in Fig. 5
Phenomenon is reduced, but is still higher than Tmin-TΔA certain temperature, and there is temperature higher than T in the later periodmin-TΔ, easily determine this section of relatively low temperature
Temperature is trained off to be normally non-, is 4. ideal normal temperature curve, in t without filtering processingax~taxIt is warm in+1.1 times
Degree is always above Tmin-TΔ, without filtering wave by prolonging time processing, therefore in tax+ 1.1~tax+ 1.2 (i.e. tax+Δt-td~tax+Δt)
Period is by the temperature value measured and Tmin-TΔCompare, until being less than Tmin-TΔProcess finishing is thought, as a result respectively as in Fig. 6
3., 4. shown in.
In the present embodiment, for passing through TaAnd TbThe processing of temperature curve is respectively such as Fig. 7 and Fig. 8 institute between curve acquisition roll
Show, temperature curve is as shown in Figure 9 at the roll obtained after treatment.It is 1. qualified workpiece in Fig. 9, is 2., 3. unqualified work
Part.
Comparison diagram 5 and Fig. 9 by above-mentioned device and method it is found that can carry out temperature during pass mill milling
Monitoring record and error correction have been filtered out due to inlet temperature sensor 1 and discharge port temperature sensor 6 " training off " and have been caused
The relatively low underproof illusion of temperature, reduce due to hardware it is insufficient caused by the low problem of qualification rate.
In the present embodiment, the temperature curve three at fitting reduction roll, detailed process are further included the steps that after step 2
Are as follows:
?ExtremelyPeriod, curve when being unprocessed workpiece,
Temperature is environment temperature and is held essentially constant, with the environment temperature T without pass milling train when processingcFitting；Wherein, ta(x-1)For
- 1 workpiece of xth starts to process moment, tb(x-1)Terminate to process the moment for -1 workpiece of xth；
?ExtremelyPeriod, temperature curve when being workpieces processing, using depositing
The temperature of each section value maximum value of storage, the temperature value information that finally will acquire are carried out curve fitting by interpolation method, are corrected
The true temperature curve in pass milling train process afterwards.
In the present embodiment, the true temperature curve in pass milling train process after being corrected is as shown in Figure 10, directly
Line A1 is the processing temperature upper limit, and straight line A2 is processing temperature lower limit, and curve A3 is processing curve, it can be seen that being 2., 3. not
Qualified workpiece.
Present invention reduces artificial treatment complexity, realizes and the metering of workpieces processing quantity and workpiece are at roll
The reduction of actual temperature curve.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (6)
1. a kind of pass milling train processing temperature real-time monitoring record and error calibration method, the device used include pass milling train
Inlet temperature detection unit, pass milling train discharge port temperature detecting unit and remote monitoring terminal (5), the pass milling train into
Material mouth temperature detecting unit include sequentially connected inlet temperature sensor (1), feed inlet analog to digital conversion circuit module (2),
Feed inlet microprocessor (3) and feed inlet communication module (4), the inlet temperature sensor (1) setting pass milling train into
The normal position of material mouth；The pass milling train discharge port temperature detecting unit includes sequentially connected discharge port temperature sensor
(6), discharge port analog to digital conversion circuit module (7), discharge port microprocessor (8) and discharge port communication module (9), the discharge port
The normal position of pass milling train discharge port is arranged in temperature sensor (6)；The feed inlet communication module (4) and discharge port are logical
Letter module (9) connects with remote monitoring terminal (5)；It is characterized in that, method includes the following steps:
Step 1: parameter setting and calculating, detailed process are as follows:
The environment temperature T of pass milling train when step 101, setting are without processingc, by pass rolling mill input mouth to pass milling train discharge port
Maximum temperature drop Δ T and the be capable of processing Workpiece length of pass milling train maximum value LmaxWith minimum value Lmin；This batch is arranged to add
The linear velocity v of working hour pass rolling mill roll, the length l of institute's workpieces processing, processing temperature upper limit Tmax, processing temperature lower limit Tmin,
And the sampling time t of remote monitoring terminal (5) is sets；
Step 102, according to formulaCalculate workpiece qualification determination offset temperatures value TΔ, according to formulaCalculate work pieces process maximum time tmax, according to formulaCalculate work pieces process minimum duration tmin, root
According to formulaCalculate the single work pieces process duration Δ t of this batch；Wherein,It indicates to be rounded downwards；
Step 103, according to formulaComputation delay time td, according to formulaIt calculates
Maximum value is segmented holding time tΔ；Wherein,Expression rounds up；
Step 2: real time data acquisition and processing, detailed process are as follows:
Step 201, when people by workpiece be sent into pass rolling mill input mouth when, inlet temperature sensor (1) real-time measurement pass rolls
The temperature T of machine inleta, the temperature T of discharge port temperature sensor (6) real-time measurement discharge portb, and by TaAnd TbAnd Tmin-
TΔCompare；
Work as Ta< Tmin-TΔAnd Tb< Tmin-TΔWhen, it is judged as that no work pieces process, record temperature value are
When first appearing Ta> Tmin-TΔWhen, the moment is that the 1st workpiece starts to process moment t to record at this timea1, and by pass milling train
The temperature data of feed inlet is stored in temperature array A；When T occurs in i-tha> Tmin-TΔWhen, there is T in moment and last time at this time for judgementa
> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timea> Tmin-TΔAt the time of difference it is small
In tminWhen, the temperature at moment at this time and pass rolling mill input mouth is not recorded；When at this time, there is T in moment and last timea>
Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece starts to process moment t to record at this timeai, and pass is rolled
The temperature data of machine inlet is stored in temperature array A；Wherein, the value of i is the natural number greater than 1；
In tax~tax+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, record at this time the moment, simultaneously remembered by trigger
Record uses delay temperature array AdThe temperature data of pass rolling mill input mouth is temporarily recorded, when in delay time tdIt is interior go out
Now it is more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array A in the last one temperature
Value takes mean value, as delay time tdThe temperature value of the pass rolling mill input mouth of interior all sampling instant points is stored in temperature array A；
As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array A that is delayeddIt is merged into
In temperature array A；Wherein, the value of x is the natural number greater than 1, taxStart to process the moment for x-th of workpiece；
In tax+Δt-td~taxIn+Δ t the period, when in tax+Δt-tdWhen moment last time delay record is not up to delayed
Between tdWhen, by the temperature T of pass rolling mill input mouthaThe environment temperature T of pass milling train when with without processingcIt is compared, works as Ta-Tc>
When 200, it is judged as that the maximum temperature in this time not entirely through pass rolling mill input mouth, is stored in temperature array A by workpiece
In, work as Ta-TcWhen≤200, it is judged as in talast+tdMoment, workpiece have passed through pass rolling mill input mouth completely；Wherein,
talastFor in tax~tax+Δt-tdThe time that last time delay record starts in period；When in tax+Δt-tdMoment is most
Primary delay record has reached delay time t afterwardsdWhen, by the temperature T of pass rolling mill input mouthaWith Tmin-TΔCompare, works as Ta>
Tmin-TΔWhen, the temperature data of pass rolling mill input mouth is stored in temperature array A, until Ta< Tmin-TΔ, work as Ta< Tmin-TΔ
When, it is judged as that workpiece has passed through pass rolling mill input mouth completely；
Step 202, when workpiece is dragged to below discharge port temperature sensor (6) by roll, TbStart to be greater than Tmin-TΔ；
When first appearing Tb> Tmin-TΔWhen, the moment is that the 1st workpiece terminates to process moment t to record at this timeb1, and by pass milling train
The temperature data of discharge port is stored in temperature array B；When T occurs in i-thb> Tmin-TΔWhen, there is T in moment and last time at this time for judgementb
> Tmin-TΔAt the time of difference whether be greater than tmin, when at this time, there is T in moment and last timeb> Tmin-TΔAt the time of difference it is small
In tminWhen, the temperature at moment at this time and pass milling train discharge port is not recorded；When at this time, there is T in moment and last timeb>
Tmin-TΔAt the time of difference be greater than tminWhen, the moment is that i-th of workpiece terminates to process moment t to record at this timebi, and pass is rolled
The temperature data of machine discharge port is stored in temperature array B；Wherein, the value of i is the natural number greater than 1；
In tbx~tbx+Δt-tdIn period, it is less than T when there is temperature valuemin-TΔWhen, record at this time the moment, simultaneously remembered by trigger
Record uses delay temperature array BdThe temperature data of pass milling train discharge port is temporarily recorded, when in delay time tdIt is interior go out
Now it is more than or equal to Tmin-TΔTemperature value when, will be greater than or equal to Tmin-TΔTemperature value and temperature array B in the last one temperature
Value takes mean value, as delay time tdThe temperature value of the pass milling train discharge port of interior all sampling instant points is stored in temperature array B；
As delay time tdInterior temperature value is always less than Tmin-TΔWhen, in delay time tdAfter, by the temperature array B that is delayeddIt is merged into
In temperature array B；Wherein, the value of x is the natural number greater than 1, tbxTerminate to process the moment for x-th of workpiece；
In tbx+Δt-td~tbxIn+Δ t the period, when in tbx+Δt-tdMoment delay record is not up to delay time tdWhen,
By the temperature T of pass milling train discharge portbThe environment temperature T of pass milling train when with without processingcIt is compared, works as Tb-TcWhen > 200,
It is judged as that not entirely through pass milling train discharge port, the maximum temperature in this time is stored in temperature array B for workpiece, when
Tb-TcWhen≤200, it is judged as in tblast+tdMoment, workpiece have passed through pass milling train discharge port completely；Wherein, tblastFor
tbx~tbx+Δt-tdThe time that last time delay record starts in period；When in tbx+Δt-tdMoment delay record has reached
To delay time tdWhen, by the temperature T of pass milling train discharge portbWith Tmin-TΔCompare, works as Tb> Tmin-TΔWhen, by pass milling train
The temperature data of discharge port is stored in temperature array B, until Tb< Tmin-TΔ, work as Tb< Tmin-TΔWhen, it is judged as that workpiece is completely logical
Pass milling train discharge port is crossed；
From tbxMoment, firstly, to the temperature T of the corresponding pass rolling mill input mouth of each sampling instantaGo out with pass milling train
The temperature T of material mouthbIt is compared, as 0 < Ta-TbIt, will when≤Δ TExtremely as the sampling instant thermograph
Final roll rolling temperature array；Work as Ta-TbIt, will when > Δ TAs the sampling instant thermograph to final roll
Rolling temperature array；Work as Ta-TbIt, will when < 0As the sampling instant thermograph to final roll rolling temperature number
Group；Then, using every tΔThe method that period is maximized carries out the temperature data in final roll rolling temperature array
It saves；
Step 203, by the maximum temperature value of acquirement respectively with processing temperature upper limit TmaxWith processing temperature lower limit TminCompare, it is right
Whole numerical value, which is greater than lower limit and is less than the workpiece of the upper limit, is determined as qualification, be otherwise determined as it is unqualified, until tax+ Δ t is completed most
Primary record determines that processing terminate for workpiece data, and piece count adds 1 afterwards；
Step 3: the temperature curve at fitting reduction roll, detailed process are as follows:
?ExtremelyPeriod, curve when being unprocessed workpiece, temperature are
It environment temperature and is held essentially constant, the environment temperature T of pass milling train when with without processingcFitting；Wherein, ta(x-1)It is xth -1
Workpiece starts to process moment, tb(x-1)Terminate to process the moment for -1 workpiece of xth；
?ExtremelyPeriod, temperature curve when being workpieces processing, using storage
Temperature of each section value maximum value, the temperature value information that finally will acquire is carried out curve fitting by interpolation method, after being corrected
True temperature curve in pass milling train process.
2. pass milling train processing temperature real-time monitoring record described in accordance with the claim 1 and error calibration method, feature exist
In: the inlet temperature sensor (1) and discharge port temperature sensor (6) be infrared temperature sensor.
3. pass milling train processing temperature real-time monitoring record described in accordance with the claim 1 and error calibration method, feature exist
In: the feed inlet microprocessor (3) and discharge port microprocessor (8) be DSP digital signal processor DSP28335, it is described
Feed inlet analog to digital conversion circuit module (2) is integrated in feed inlet microprocessor (3) inside, the discharge port analog to digital conversion circuit mould
It is internal that block (7) is integrated in discharge port microprocessor (8).
4. pass milling train processing temperature real-time monitoring record described in accordance with the claim 1 and error calibration method, feature exist
In: the feed inlet communication module (4) and discharge port communication module (9) be RS-485 communication module.
5. pass milling train processing temperature real-time monitoring record described in accordance with the claim 1 and error calibration method, feature exist
In: the remote monitoring terminal (5) is industrial personal computer.
6. pass milling train processing temperature real-time monitoring record described in accordance with the claim 1 and error calibration method, feature exist
In: the value of Δ T described in step 101 is 20 DEG C.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030037291A (en) * | 2001-11-01 | 2003-05-14 | 주식회사 포스코 | Rolling control apparatus and its method using temperature compensation |
| CN100998995A (en) * | 2006-09-06 | 2007-07-18 | 中铝西南铝板带有限公司 | Temperature control system of milling uluminium/aluminium alloy coiled material and control method |
| CN105631231A (en) * | 2016-01-28 | 2016-06-01 | 北京科技大学 | Method for correcting temperature measured value for hot rolling process |
| CN106029244A (en) * | 2013-12-20 | 2016-10-12 | 诺维尔里斯巴西有限公司 | Dynamic shifting of reduction (DSR) to control temperature in tandem rolling mills |
| WO2017037922A1 (en) * | 2015-09-03 | 2017-03-09 | 東芝三菱電機産業システム株式会社 | System for controlling hot-rolled steel plant |
| CN106955896A (en) * | 2017-03-15 | 2017-07-18 | 中冶华天工程技术有限公司 | Water tank parameter on-line tuning system and method based on rolled piece head and tail temperature difference |
| CN107405657A (en) * | 2015-03-26 | 2017-11-28 | 东芝三菱电机产业系统株式会社 | Temperature computation method, temperature computing device, method for heating and controlling and heating control apparatus |
-
2018
- 2018-03-20 CN CN201810227887.6A patent/CN108356082B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030037291A (en) * | 2001-11-01 | 2003-05-14 | 주식회사 포스코 | Rolling control apparatus and its method using temperature compensation |
| CN100998995A (en) * | 2006-09-06 | 2007-07-18 | 中铝西南铝板带有限公司 | Temperature control system of milling uluminium/aluminium alloy coiled material and control method |
| CN106029244A (en) * | 2013-12-20 | 2016-10-12 | 诺维尔里斯巴西有限公司 | Dynamic shifting of reduction (DSR) to control temperature in tandem rolling mills |
| CN107405657A (en) * | 2015-03-26 | 2017-11-28 | 东芝三菱电机产业系统株式会社 | Temperature computation method, temperature computing device, method for heating and controlling and heating control apparatus |
| WO2017037922A1 (en) * | 2015-09-03 | 2017-03-09 | 東芝三菱電機産業システム株式会社 | System for controlling hot-rolled steel plant |
| CN105631231A (en) * | 2016-01-28 | 2016-06-01 | 北京科技大学 | Method for correcting temperature measured value for hot rolling process |
| CN106955896A (en) * | 2017-03-15 | 2017-07-18 | 中冶华天工程技术有限公司 | Water tank parameter on-line tuning system and method based on rolled piece head and tail temperature difference |
Non-Patent Citations (1)
| Title |
|---|
| 劈分法轧制H型钢异型坏的智能CARD系统开发;董永刚;《中国优秀硕士学位论文全文数据库》;20021231(第2期);全文 * |
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