CN107552577B - A method of improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton - Google Patents
A method of improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton Download PDFInfo
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- CN107552577B CN107552577B CN201710861918.9A CN201710861918A CN107552577B CN 107552577 B CN107552577 B CN 107552577B CN 201710861918 A CN201710861918 A CN 201710861918A CN 107552577 B CN107552577 B CN 107552577B
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Abstract
The present invention provides a kind of methods of disconnected band of improvement cold-rolling mill master cylinder magnetic scale Caton; this method is based on Siemens TDC control system and Siemens's PDA data collection system; the present invention may detect the generation of failure at 1 second; when guaranteeing board surface quality; timely locking-valve processing is able to achieve quick parking; in 2 minutes, belt steel rolling quality can be guaranteed each magnetic scale Caton downtime.
Description
Technical field
The present invention relates to steel cold rolling processing technique fields, particularly, are related to a kind of improvement cold-rolling mill master cylinder magnetic scale Caton
The method of disconnected band.
Background technique
The control thickness of cold-strip steel, which mainly passes through, adjusts the realization of hydraulic main cylinder drafts, controls precision at 1 μm, magnetic scale is anti-
Precision is presented at 0.001 μm；Master cylinder movement relies on servo valve control, and master cylinder position is relied on the mobile magnetic scale detection of cylinder, adjusts servo
Valve opening achievees the purpose that master cylinder position-force control.
Due to the aging of the impure emulsion of milling train and device line, the loss of magnetic scale electrical component, magnetic scale detection control
Device failure, signal line failure, magnetic scale are coupled with cylinder movement guide rod bite etc., and master cylinder position detection magnetic scale Caton is caused to be missed
Difference.Cause magnetic scale feedback master cylinder position data therefrom to fluctuate in minimum range, which normally rolls much smaller than milling train
When fluctuation range (at this time magnetic scale location feedback value and actual value be not inconsistent), master cylinder depressing position can not be according to setting closed loop at this time
Control, servo valve exception control cause roll-force under master cylinder pressure to significantly change, and strip tension fluctuation is further resulted in and rolled
Make high quick-break band.For such failure, domestic manufacturer generally transfinites according to magnetic scale position setting value and actual value deviation (such as partially
When difference surpasses 200 μm) or milling train fore side and transmission side two sides rolling force deviation transfinite (for example deviation surpasses 150 ton hours), or even according to
The milling train that detects by the interstand tension meter band signal triggering milling train that breaks quickly stops, in docking process master cylinder control servo valve according to
It is old to carry out control output in magnetic scale position.
Domestic five tandem mill mill speed of cold rolling is generally in 1000-1500m/min, when the prior art detects magnetic scale position
Magnetic scale position deviation or rolling force deviation caused by Caton transfinite or even when disconnected band sets out quick parking, docking process 10 seconds-
20 seconds, when due to detecting abnormal, the parameters such as rolling-mill housing roll-force and interstand tension severe exacerbation, at this time servo valve according to
It is so exporting, master cylinder is still acting, and situation is exacerbated in rack, and serious piling of steel, incident processing procedure are general in rack
Need 6-24 hours.
Due in milling train start and stop vehicle and the normal operation of rolling, roll-force, interstand tension, rack two sides master cylinder drafts etc.
Parameter fluctuation range is bigger, so alarm limits are limited in scope.When magnetic scale position detection failure occurs, closed-loop control is broken
Bad, fluctuation severe exacerbation, the general prior art can detect disconnected along with milling train in signal 1 second in a short time under master cylinder pressure
Band, fault-signal feedback are obvious blunt.
Summary of the invention
It is an object of that present invention to provide to solve technical problem.
To achieve the above object, the present invention provides a kind of method of disconnected band of improvement cold-rolling mill master cylinder magnetic scale Caton, the party
Method is based on Siemens TDC control system and Siemens's PDA data collection system, comprising the following steps:
A, during cold rolling mill, rolling line speed is greater than 0, and speed feedback value acquisition is encoded from rack mair motor speed
Device effectively monitors range when speed feedback value is greater than 200m/min；Actual linear velocity and 200m/min are compared, if practical line
Speed is greater than 200m/min, then functional block exports 1 signal；
B, data scanning each period is 20ms, and position feedback available data and a upper cycle data compare, if data
Do not change, triggers fault-signal after for 1 seconds；Existing period magnetic scale data are compared by NCM functional block, and pass through NOP function
Block saves upper period magnetic scale data, if data do not change, NCM functional block exports the triggering PDE delay of 1 signal and connects function
It can block；PDE functional block delay 1000ms, the signal for exporting velocity contrast's generation in 1 signal, with step A is done and logical operation, at
Vertical then export 1 signal, i.e., single magnetic scale breaks down signal when rolling mill speed surpasses 200m/min, 2 magnetic scales of each rack
Fault-signal is done or logical operation, and any rack is faulty, then exports a resultant fault signal.
Preferably, fault-signal passes through CTV_P function by the core bus communication between Siemens TDC control system CPU
Block and CRV_P functional block realize sending and receiving for data.
Preferably, it being communicated by PROFIBUS-DP and realizes that AGC controls HGC function, fault-signal is negated by NOT module,
It is connected on AND and logic functional block and exports with other interlocking signals, then negated by NOT module, when logical operation value is 1
HGC fault-signal is exported, the output of master cylinder hydraulic pressure servo valve is stopped.
Preferably, resultant fault signal is sent to Siemens's PDA data collection system by CTV_P functional block, convenient for event
The record of barrier and analysis.
Preferably, resultant fault signal triggering milling train quickly stops, simultaneous faults rack two sides master cylinder servo-fluid pressure valve lock
Valve processing.
The invention has the following advantages:
It is not used before the method for the present invention, since failure occurs 5 seconds or so to find that (rolling parameter is serious at this time
Deteriorate), usually monthly magnetic scale Caton accident 2 times or more, once based on 10 hours, January, causality loss existed: 2*10*12*16.2*
4500=17496000 member (that is: about 4500 yuan of every market price of the 2 times * one hour * 10 hours production * 16.2 tons of * of a roll of volume 12), also
The loss of equipment impact injury and roll in rack caused by non-calculation accident, the investment etc. for manpower and material resources of resuming production.
The present invention may detect the generation of failure at 1 second, and when guaranteeing board surface quality, timely locking-valve handles energy
Realize quickly parking, in 2 minutes, belt steel rolling quality can be guaranteed each magnetic scale Caton downtime.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
The present invention is further detailed explanation below.
Specific embodiment
The embodiment of the present invention is described in detail below, but the present invention can be limited and be covered according to claim
Multitude of different ways implement.
A method of improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, this method is based on Siemens TDC control system and west
The sub- PDA data collection system of door, Siemens HMI can be used in control interface, and by taking 5 tandem mills as an example, each rack has fore side, passes
The dynamic master cylinder of side two, so magnetic scale has 10, each magnetic scale position detection of programming can trigger entire milling train when problematic
Fault-signal；
The programming of master cylinder position detection feedback display magnetic scale Caton is as follows:
A, during cold rolling mill, rolling line speed is greater than 0, and speed feedback value acquisition is encoded from rack mair motor speed
Device effectively monitors range when speed feedback value is greater than 200m/min；Actual linear velocity and 200m/min are compared, if practical line
Speed is greater than 200m/min, then functional block exports 1 signal；
B, data scanning each period is 20ms, and position feedback available data and a upper cycle data compare, if data
Do not change, set out fault-signal after for 1 seconds；Existing period magnetic scale data are compared by NCM functional block, and pass through NOP function
Block saves upper period magnetic scale data, if data do not change, NCM functional block exports the triggering PDE delay of 1 signal and connects function
It can block；PDE functional block delay 1000ms exports the signal that velocity contrast generates in 1 signal, with step A and does and (leads to logical operation
Cross AND module), establishment then exports 1 signal, i.e., single magnetic scale breaks down signal when rolling mill speed surpasses 200m/min, each
2 magnetic scale fault-signals of rack are done or logical operation, and any rack is faulty, then export a resultant fault signal.
The realization of fault-signal defencive function:
Ethernet communication between CPU module and picture primary server WINCC software that fault-signal passes through Siemens TDC passes
It is sent to picture and realizes picture warning function, when any rack magnetic scale position failure, by 1 triggering of resultant fault signal in program
PDF delay break function block, the signal of PDF output are sent to menu display function block；
Fault-signal passes through the core bus communication between TDC control system CPU and realizes that being sent to main enable controls stopping fastly for CPU
Signal realizes sending and receiving for data with CTV_P functional block and CRV_P functional block in program；
It is communicated by PROFIBUS-DP and realizes that AGC controls HGC function, fault-signal is negated by NOT module, with other
Interlocking signal is connected on AND and logic functional block and exports, then is negated by NOT module, the output when logical operation value is 1
HGC fault-signal stops the output of master cylinder hydraulic pressure servo valve；
Resultant fault signal is sent to Siemens's PDA data collection system by CTV_P functional block, convenient for the record of failure
And analysis.Resultant fault signal triggering milling train quickly stops, the processing of simultaneous faults rack two sides master cylinder servo-fluid pressure valve locking-valve.
It is not used before the method for the present invention, since failure occurs 5 seconds or so to find that (rolling parameter is serious at this time
Deteriorate), usually monthly magnetic scale Caton accident 2 times or more, once based on 10 hours, January, causality loss existed: 2*10*12*16.2*
4500=17496000 member (that is: about 4500 yuan of every market price of the 2 times * one hour * 10 hours production * 16.2 tons of * of a roll of volume 12), also
The loss of equipment impact injury and roll in rack caused by non-calculation accident, the investment etc. for manpower and material resources of resuming production.
The method of the present invention may detect the generation (rolling parameter has no obvious deterioration at this time) of failure at 1 second, protect
In the case of demonstrate,proving board surface quality, timely locking-valve processing is able to achieve quick parking, and each magnetic scale Caton downtime is in 2 minutes, band
Steel rolling quality can be guaranteed, and also provide early warning with alarm parking function for the plant maintenance work of mechanical electric.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of method for improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, this method are based on Siemens TDC control system and west gate
Sub- PDA data collection system, which comprises the following steps:
A, during cold rolling mill, rolling line speed is greater than 0, and speed feedback value acquisition is fast from rack mair motor speed encoder
It spends and monitors range when value of feedback is greater than 200m/min to be effective；Actual linear velocity and 200m/min are compared, if actual linear velocity
Greater than 200m/min, then functional block exports 1 signal；
B, data scanning each period is 20ms, and position feedback available data and a upper cycle data compare, if data do not have
Variation triggers fault-signal after for 1 seconds；Existing period magnetic scale data are compared by NCM functional block, and are protected by NOP functional block
A period magnetic scale data are deposited, if data do not change, NCM functional block exports 1 signal triggering PDE delay turn-on power loss
Block；PDE functional block delay 1000ms, the signal for exporting velocity contrast's generation in 1 signal, with step A is done and logical operation, sets up
Then export 1 signal, i.e., single magnetic scale breaks down signal when rolling mill speed surpasses 200m/min, 2 magnetic scales of each rack therefore
Barrier signal is done or logical operation, and any rack is faulty, then exports a resultant fault signal.
2. the method according to claim 1 for improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, which is characterized in that fault-signal
By the core bus communication between Siemens TDC control system CPU, data are realized by CTV_P functional block and CRV_P functional block
Send and receive.
3. the method according to claim 2 for improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, which is characterized in that pass through
PROFIBUS-DP communication realizes that AGC controls HGC function, and fault-signal is negated by NOT module, is connected to other interlocking signals
It exports on AND and logic functional block, then is negated by NOT module, HGC fault-signal is exported when logical operation value is 1, is stopped
The only output of master cylinder hydraulic pressure servo valve.
4. the method according to claim 3 for improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, which is characterized in that resultant fault
Signal is sent to Siemens's PDA data collection system by CTV_P functional block, record and analysis convenient for failure.
5. the method according to claim 4 for improving the disconnected band of cold-rolling mill master cylinder magnetic scale Caton, which is characterized in that resultant fault
Signal triggering milling train quickly stops, the processing of simultaneous faults rack two sides master cylinder servo-fluid pressure valve locking-valve.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715700B (en) * | 2020-05-08 | 2022-05-27 | 唐山钢铁集团有限责任公司 | AGC state detection control method for strip mill |
| CN114789200B (en) * | 2021-10-14 | 2024-02-09 | 天津市新宇彩板有限公司 | Method and system for fault self-diagnosis and recording of cold rolling unit |
| CN114789198B (en) * | 2021-10-14 | 2024-02-02 | 天津市新宇彩板有限公司 | Method and system for improving vibration belt breakage of main oil cylinder of cold rolling mill |
| CN114798768A (en) * | 2022-03-18 | 2022-07-29 | 首钢京唐钢铁联合有限责任公司 | Control method and device for finish rolling of continuous casting and rolling production line |
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| US4083002A (en) * | 1976-02-17 | 1978-04-04 | Allport John J | Method and apparatus for measuring cross sectional area and weight per unit length of elongated, conductive material by magnetic field displacement |
| JP2006159256A (en) * | 2004-12-07 | 2006-06-22 | Sanyo Special Steel Co Ltd | Fixing method when electromagnetic coil of electromagnetic tooth clutch of screw-down pointer of slab blooming mill is burned out |
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| US4083002A (en) * | 1976-02-17 | 1978-04-04 | Allport John J | Method and apparatus for measuring cross sectional area and weight per unit length of elongated, conductive material by magnetic field displacement |
| JP2006159256A (en) * | 2004-12-07 | 2006-06-22 | Sanyo Special Steel Co Ltd | Fixing method when electromagnetic coil of electromagnetic tooth clutch of screw-down pointer of slab blooming mill is burned out |
| CN102699033A (en) * | 2012-05-15 | 2012-10-03 | 北京首钢自动化信息技术有限公司 | Rolling mill SONY magneto-scale online redundancy method |
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