CN102899478B - Method for removing matter adhered to furnace roller of annealing furnace - Google Patents
Method for removing matter adhered to furnace roller of annealing furnace Download PDFInfo
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- CN102899478B CN102899478B CN201210392520.2A CN201210392520A CN102899478B CN 102899478 B CN102899478 B CN 102899478B CN 201210392520 A CN201210392520 A CN 201210392520A CN 102899478 B CN102899478 B CN 102899478B
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Abstract
The invention relates to a method for removing matters adhered to furnace rollers of an annealing furnace, belonging to the technical field of continuous annealing furnaces. Devices comprise a man-machine monitoring interface, an Ethernet module, a first-level PLC (programmable logic controller) system, a DP (decentralized periphery) communication module, motors, frequency converters and the like. The man-machine monitoring interface is built through Ethernet communication cables and the Ethernet module and is communicatively connected with the CPU (central processing unit) module of the first-level PLC system; the first-level PLC system is built through DP network communication and the DP communication module and is communicatively connected with furnace roller motor frequency converters; and the motors are connected with the frequency converters through control cables. Compared with the traditional manual cleaning method by opening the furnace during maintenance, the method provided by the invention has the advantages of no production influence, good effect, low cost and high safety and reliability, and solves the problem that the matters adhered to the furnace rollers cannot be cleaned on line, wherein the problem is eagerly expected to be solved but is not solved for a long time.
Description
Technical field
The invention belongs to the continuous annealing furnace technical field, a kind of method of removing the annealing furnace roller bur particularly is provided.
Background technology
In continuous annealing furnace, furnace roller plays the effect of pilot tape steel trend, makes to be with steel to keep continuous annealing in stove under kinestate.Can produce impurity in stove in normal productive process, some impurity is attached to furnace wall, does not affect production in the short period of time.Some impurity is attached on furnace roller, and small impurity can be smoothed by the tension force effect with steel; But the hard larger impurity of quality is difficult to self falling or smooths because the gravity reason is attached to bottom roller surface in stove, causes belt steel surface to produce " pressing against hole ", directly has influence on strip quality.
The traditional method of cleaning furnace roller is labor cleaning after the maintenance blow-on.This method need take the production time, and cost is high, and security risk is large.Now by automatic control, make furnace roller and band steel produce velocity contrast, by friction, eliminate the roll surface dirt settling.The method has four kinds of benefits: the one, do not need parking maintenance, and do not take the production time, while normally producing, can polish; The 2nd, in time, the operative employee finds to be with steel to have " pressing against hole " can send immediately the polishing instruction at any time in cleaning; The 3rd, do not drop into cleaning up cost, reduce costs, save the repair time; The 4th, reduce the artificial number of times that cleans roll surface, reduced security risk.
This by time variable control polish roll surface, although the method for removing the furnace roller bur can not substitute the maintenance blow-on fully and clean, and is with steel for minimizing and " presses against hole ", improve the quality of products and play good action.This clean furnace roller method is not yet found report at present.
Summary of the invention
The object of the invention is to provide a kind of method of removing the annealing furnace roller bur, has solved the furnace roller bur Hand scarf problem that long-term serious hope solves.Eliminate belt steel surface and " press against hole ", the band steel caused for the furnace roller bur is especially pressed against hole.By adjusting the furnace roller diameter, change the furnace roller linear velocity, and then realize the differential control furnace roller, make furnace roller produce relative friction with the band steel, remove furnace roller surface adhesion thing.
The furnace roller bur is removed in the furnace roller polishing, and the speed that it is to control furnace roller at all makes furnace roller produce velocity contrast with the band steel contacted.Therefore, how producing velocity contrast is core of the present invention.The automatic control foundation of paper this invention once.Continuous annealing furnace comprises the parameters such as linear velocity set(ting)value, furnace roller diameter in the data set that PLC sends to furnace roller motor frequency conversion device in automatically controlling.Frequency transformer converses circular frequency control furnace roller motor according to the linear velocity set(ting)value received and furnace roller diameter.Change this parameter of furnace roller diameter in this process, can reach and change the purpose that frequency transformer exports motor angular velocity to, realize the change of furnace roller linear velocity.During normal annealing furnace is produced, in annealing furnace, all furnace rollers all move under identical linear velocity set(ting)value.Linear velocity according to above theory this roller after changing one of them furnace roller diameter changes.
The present invention relates to man-machine monitoring interface, ethernet module, primary PLC system, DP communication module, motor, frequency transformer etc.Setting up man-machine monitoring interface 1 by ethernet communication line 7, ethernet module 5 is connected with the communication of the CPU module 4 of primary PLC system; Set up the primary PLC system and be connected with the communication of furnace roller motor frequency conversion device by DP Netcom news 8, DP communication module 6; Motor is connected with frequency transformer by control cables 10.
Man-machine monitoring interface function of the present invention is that furnace roller linear velocity and furnace roller diameter data by operator's input, be sent to primary PLC.
Primary PLC system function of the present invention is to process the parameters such as furnace roller linear velocity and furnace roller diameter, and finally to frequency transformer, send steering order.
Frequency transformer function of the present invention is that the steering orders such as the linear velocity that PLC is sent, diameter change into circular frequency and control motor.
Motor of the present invention will be accepted the circular frequency that frequency transformer sends, and finally control furnace roller and rotate.
Specific as follows:
(1) man-machine monitoring interface input furnace roller linear velocity, original roller diameter value, initial polishing zone, roller footpath change set(ting)value, polishing time, polishing model selection, polishing function are opened, the polishing function is closed parameter, by ethernet communication line 7 and ethernet module 5, parameter are issued to the primary PLC system;
The man-machine interface parameter implication of the present invention is as follows
The range of set value that the roller footpath changes parameter is 3% to 10%;
The range of set value of polishing time parameter is 10 seconds to 9999 seconds;
The polishing pattern is divided into: order polishing, the polishing of fixed zone; The order polishing is by the furnace roller subregion, 1 zone of can only polishing simultaneously; The polishing of fixed zone is to formulate a certain zone of polishing according to input value;
Initial polishing zone, limited according to the quantity to the furnace roller subregion;
The polishing time is only effective under order polishing pattern; The polishing function continues certain zone of polishing, stops the current region polishing after exceeding polishing time of regulation, and next zone starts to polish.
(2) by ethernet communication line 7 and ethernet module 5, primary PLC system CPU module receives the parameter that man-machine monitoring interface issues;
(3) PLC processing parameter, the logic judgement
Below introduce in order PLC processing parameter, logic deterministic process, i.e. Fig. 2, the description of Fig. 3.
PLC checks " the roller footpath changes set(ting)value ", in 3% to 10% scope, keeps this set(ting)value constant; Lower than specialized range, former set(ting)value is changed to 3%, higher than specialized range, former set(ting)value is changed to 10%;
PLC checks " polishing time ", at 10 seconds to 9999 seconds, in scope, keeps this set(ting)value constant; Lower than specialized range, former set(ting)value is changed to 10 seconds, higher than specialized range, former set(ting)value is changed to 9999 seconds;
PLC checks " polishing model selection ", and the PLC User is set the corresponding polishing pattern of carrying out;
When PLC carries out " order polishing ", be written into " initial polishing zone ", PLC records the polishing time in this zone, and the time of record stops current region after exceeding polishing time of regulation polishes, and next zone starts to polish;
When PLC carries out " polishing of fixed zone ", be written into " initial polishing zone ", PLC does not record the polishing time in this zone;
PLC backup original roller diameter data;
PLC checking mode initiation command;
Polishing starts PLC and specifies the diameter of furnace roller according to " the roller footpath changes set(ting)value ", " sequentially polishing " or " polishing of fixed zone " zone modification issued.
The present invention does not change the linear velocity setup parameter, and PLC directly is sent to frequency transformer by the linear velocity value.
(4) PLC by DP Netcom news 8, DP communication module 6 to the roller footpath ginseng after the frequency transformer transmission processing.
(5) frequency transformer generates circular frequency by the linear velocity, the roller footpath parameter integration that receive, and controls motor by three-phase control cables 10.
Advantage positively effect of the present invention:
The present invention in actual applications, removes the furnace roller bur effective, and has good economic benefit and social benefit.The present invention has overcome many drawbacks of traditional maintenance blow-on labor cleaning method, get final product Hand scarf during production, do not need parking maintenance, have advantages of save man-hour, cleaning in time, low without cleaning expense, security risk, significant to improving the quality of products, reducing costs, there is good application value.
The accompanying drawing explanation
Fig. 1 is that roll surface bur control network diagram is removed in the furnace roller polishing.Wherein, man-machine monitoring interface 1, primary PLC frame 2, power module 3, CPU module 4, ethernet module 5, DP communication module 6, ethernet communication line 7, Profibus-DP connection 8, furnace roller motor 9, motor three-phase control cables 10.
Fig. 2: furnace roller roller footpath parameter processing flow chart
Fig. 3: furnace roller polishing program " order polishing ", " polishing of fixed zone " control flow chart.
Embodiment
The present invention includes: man-machine monitoring interface, ethernet module, primary PLC system, DP communication module, furnace roller motor frequency conversion device etc.Setting up man-machine monitoring interface 1 by ethernet communication line 7, ethernet module 5 is connected with the communication of the CPU module 4 of primary PLC system; Set up the primary PLC system and be connected with the communication of furnace roller motor frequency conversion device by DP Netcom news 8, DP communication module 6.
Step 1: man-machine monitoring interface input
The linear velocity value is 4 metre per second (m/s)s;
Roller footpath value is 1.2 meters;
Reorganization value in roller footpath is 5%;
Initial polishing zone is set as the firstth district;
The polishing time is 300 seconds;
The polishing model selection is the circulation polishing;
The polishing function is opened.
Step 2: by ethernet communication line 7 and ethernet module 5, primary PLC system CPU module receives the parameter that man-machine monitoring interface issues.
Step 3: PLC processing parameter.
Measuring roll footpath modification value legitimacy is also revised, and must change 5%, and after the roller footpath changes, value is 1.14 meters;
Detect polishing time value legitimacy and revise, obtaining every zone polishing 300 seconds;
Start circulation polishing pattern, circulate to polish according to Fig. 3 and control.
Step 4: PLC by DP Netcom news 8, DP communication module 6 to the roller footpath parameter after the frequency transformer transmission processing.
Step 5: frequency transformer generates circular frequency by the linear velocity, the roller footpath parameter integration that receive.Obtain circular frequency 3.508rad/s, by three-phase control cables 10, control motors.
Claims (1)
1. a method of removing the annealing furnace roller bur, relate to man-machine monitoring interface, ethernet module, primary PLC system, DP communication module, motor, frequency transformer; Setting up man-machine monitoring interface by ethernet communication line, ethernet module is connected with the communication of the CPU module of primary PLC system; Set up the primary PLC system and be connected with the communication of furnace roller motor frequency conversion device by DP Netcom news, DP communication module; Motor is connected with frequency transformer by control cables; It is characterized in that, processing step is as follows:
1) man-machine monitoring interface input furnace roller linear velocity, original roller diameter data, initial polishing zone, roller footpath change set(ting)value, polishing time, polishing model selection, polishing function are opened, the polishing function is closed parameter, by ethernet communication line (7) and ethernet module (5), parameter are issued to the primary PLC system;
The range of set value that the roller footpath changes parameter is 3% to 10%;
The range of set value of polishing time parameter is 10 seconds to 9999 seconds;
The polishing pattern is divided into: order polishing, the polishing of fixed zone; The order polishing is by the furnace roller subregion, 1 zone of can only polishing simultaneously; The polishing of fixed zone is to formulate a certain zone of polishing according to input value;
Initial polishing zone, limited according to the quantity to the furnace roller subregion;
The polishing time is only effective under order polishing pattern; The polishing function continues certain zone of polishing, stops the current region polishing after exceeding polishing time of regulation, and next zone starts to polish;
2) by ethernet communication line (7) and ethernet module (5), primary PLC system CPU module receives the parameter that man-machine monitoring interface issues;
3) PLC processing parameter, the logic judgement
Below introduce in order PLC processing parameter, logic deterministic process.
PLC checks " the roller footpath changes set(ting)value ", in 3% to 10% scope, keeps this set(ting)value constant; Lower than specialized range, former set(ting)value is changed to 3%, higher than specialized range, former set(ting)value is changed to 10%;
PLC checks " polishing time ", at 10 seconds to 9999 seconds, in scope, keeps this set(ting)value constant; Lower than specialized range, former set(ting)value is changed to 10 seconds, higher than specialized range, former set(ting)value is changed to 9999 seconds;
PLC checks " polishing model selection ", and the PLC User is set the corresponding polishing pattern of carrying out;
When PLC carries out " order polishing ", be written into " initial polishing zone ", PLC records the polishing time in this zone, and the time of record stops current region after exceeding polishing time of regulation polishes, and next zone starts to polish;
When PLC carries out " polishing of fixed zone ", be written into " initial polishing zone ", PLC does not record the polishing time in this zone;
PLC backup original roller diameter data;
PLC checking mode initiation command;
The zone that polishing beginning PLC issues according to " the roller footpath changes set(ting)value ", " order polishing " or " determining the zone polishing " is revised and is specified roller footpath data;
4) PLC by DP Netcom news (8), DP communication module (6) to the roller footpath data after the frequency transformer transmission processing;
5) frequency transformer generates circular frequency by the linear velocity, the roller footpath data integration that receive, and controls motor by three-phase control cables (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210392520.2A CN102899478B (en) | 2012-10-16 | 2012-10-16 | Method for removing matter adhered to furnace roller of annealing furnace |
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| CN201210392520.2A CN102899478B (en) | 2012-10-16 | 2012-10-16 | Method for removing matter adhered to furnace roller of annealing furnace |
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| CN102899478B true CN102899478B (en) | 2014-01-01 |
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| CN104690608B (en) * | 2015-03-03 | 2017-12-26 | 首钢京唐钢铁联合有限责任公司 | A kind of method and device for furnace roller of polishing |
| CN105013836B (en) * | 2015-07-25 | 2017-04-05 | 北京首钢自动化信息技术有限公司 | Without planisher rolling force control device and its method under elongation percentage detection state |
| CN105385836B (en) * | 2015-12-21 | 2017-08-25 | 马鞍山钢铁股份有限公司 | A kind of method that not blow-on handles furnace roller dross online |
| CN113061713B (en) * | 2021-02-04 | 2022-09-13 | 宝信软件(武汉)有限公司 | Control method of soaking pit roller way |
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| CN102560071A (en) * | 2012-01-16 | 2012-07-11 | 美钢联工程技术股份有限公司 | Method for grinding hearth roll of continuous annealing unit on line |
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