CN102806235B - Online calculating method for wrap angle of cold-rolled strip steel plate shape roll - Google Patents
Online calculating method for wrap angle of cold-rolled strip steel plate shape roll Download PDFInfo
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- CN102806235B CN102806235B CN201210292700.3A CN201210292700A CN102806235B CN 102806235 B CN102806235 B CN 102806235B CN 201210292700 A CN201210292700 A CN 201210292700A CN 102806235 B CN102806235 B CN 102806235B
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Abstract
The invention provides an online calculating method for a wrap angle of a cold-rolled strip steel plate shape roll. The method comprises the following steps: 1) after beginning winding, measuring real-time linear velocity of an outlet strip steel online by using a laser velocimeter, and calculating a real-time passing length of the strip steel; 2) after the plate shape roll is put into online detection, figuring out an initial diameter of a steel coil by using an equal-area method; 3) periodically reading measured values of the laser velocimeter and a pulse generator, and figuring out a real-time steel coil diameter; 4) checking validity of the real-time steel coil diameter so as to obtain a steel coil diameter output value; and 5) calculating a real-time wrap angle value according to an actual steel coil winding method and the steel coil diameter output value. According to the invention, extended functions of the exiting hardware equipment of a cold rolled plate shape control system are sufficiently performed; a high-accuracy and real-time continuous strip steel winding diameter is indirectly figured out by effectively utilizing a direct physical relation between the linear velocity of the strip steel and rotation speed of a winder; moreover, an online checking link of a strip steel winding diameter calculated value is provided, so that the reasonability of the calculated value is guaranteed.
Description
Technical field
The invention belongs to cold-rolled strip steel shape control technology field, relate in particular to a kind of cold-rolled strip steel shape roller cornerite on-line calculation method.
Background technology
Along with the development of Chinese national economy, all significantly improving for demand and the quality requirement of cold-rolled steel strip products.Cold rolling enterprise is for self economic benefit and the market competitiveness, all dropped into a large amount of man power and materials and be rolled the research and development of procedure quality control technology.In the quality examination index of cold-rolled steel strip products, strip shape quality is a very important aspect.In order to improve the strip shape quality of belt steel product, advanced cold rolling production unit generally can be equipped with plat control system and realize plate shape On-line Control function.Realize plate shape On-line Control, carry out the on-line measurement of plate shape with regard to being equipped with shape detection device.The shape detection device of being used widely in actual production is so far contact plate profile instrument, its operation principle is the strip below that the plate shape roller that several senser elements are installed is installed on to milling train outlet, detect with steel in real time the radial pressure to different parts sensor, foundation is with the inner tensile stress of steel and with steel, the physical relation between the radial pressure of plate shape roller is conversed to the inside tensile stress size with the horizontal different parts of steel, and then obtain the plate shape Distribution Value of outlet with steel, the plate shape Distribution Value of measuring is the most at last sent into plate shape control module and calculates the regulated quantity of Mill shape regulating and controlling mechanism, complete the control of cold-rolled strip steel shape closed loop feedback.
It is worthy of note, in the time carrying out radial pressure to inner tensile stress conversion, need to relate to the cornerite size of cold-strip steel to plate shape roller.For the production unit that guide roller is installed between plate shape roller and coiling machine, plate shape roller cornerite value is invariable, can pass through geometric formula computing board shape roller cornerite value after only need to measuring at the scene the distance between each plant equipment.Due to the restriction of site space, between the plate shape roller of a lot of cold rolling units and coiling machine, be not equipped with guide roller, thereby plate shape roller cornerite value can change and constantly change along with the diameter that batches with steel.For this situation, just must obtain online the diameter that batches with steel, and then calculate real-time plate shape roller cornerite value.In engineering, can utilize theoretical strip coiling diameter computational methods carry out strip coiling diameter in line computation, its advantage is need to can not realize coil diameter by any external equipment to calculate, but also there is significant shortcoming: it ignored belt steel thickness the fluctuation of inhomogeneities, practical rolling speed, affect the external factor of coil diameter calculated value precision with steel gap existence etc., cause its coil diameter error of calculation excessive, can not meet high-precision plate shape measurement demand.In engineering, another strip coiling diameter acquisition methods is the coil diameter computational methods based on externally measured element, by equipment such as the newly-increased laser measuring apparatus of rolling unit, sonar to measure instrument, can obtain online easily the diameter value that batches with steel.But, due to often high cost of this external measurement devices, generally on rolling mill production line, seldom use; In addition, due to site environment more complicated, such as occurring that the coil of strip center of gravity possibility that slewing rollers skid, batch is eccentric, dust steam may affect precision of ultrasonic measurement etc., measurement device also likely breaks down in addition, thereby coil diameter computational methods based on externally measured element usually can not meet certainty of measurement requirement.
On the other hand, existing cold rolling unit is equipped with some measurement mechanisms conventionally, and for example milling train exit laser velocimeter is used for measuring milling train outlet band steel wire speed, and the impulse generator being connected with reel-motor is used for measuring coiling machine rotating speed etc.Therefore, if can give full play to the expanded function of existing measurement mechanism, do not increasing under the condition of any newly-increased measurement device investment of unit, develop the cold-rolled strip steel shape roller cornerite on-line calculation method that a kind of precision is high and antijamming capability is strong, necessary condition and the current demand that improves cold-rolled strip steel shape detection and control quality, and then effectively solve in cold rolled strip steel production process owing to steel, the cornerite of plate shape roller being calculated to the inaccurate plate shape testing result distortion that causes, cause exporting the technical problem that belt plate shape control effect degenerates.
Summary of the invention
The object of the present invention is to provide a kind of cold-rolled strip steel shape roller cornerite on-line calculation method, to solve in cold rolled strip steel production process owing to steel, the cornerite of plate shape roller being calculated to the inaccurate plate shape testing result distortion that causes, cause exporting the technical problem that belt plate shape control effect degenerates.
The present invention for solving the problems of the technologies described above taked technical scheme is: a kind of cold-rolled strip steel shape roller cornerite on-line calculation method, is characterized in that: it comprises the following steps:
1) band steel threading and on coiling machine, start to batch after, measure outlet band steel actual time line speed V by being arranged on the laser velocimeter continuity in milling train exit, and utilize integrator synchronometer to calculate band steel and pass through in real time length L
1;
2), in the time that plate shape roller drops into online plate shape detection, adopt equal-area method to pass through in real time length L according to band steel
1calculate coil of strip initial diameter value D
1, and by D
1drop into online plate shape as plate shape roller and detect rear coil of strip diameter output valve D
2initial value;
3) calculate real-time coil of strip diameter D
3:
In plate shape roller line plate shape testing process, periodically read the laser velocimeter that is arranged on milling train exit and measure in real time the reel-motor rotation speed n that outlet is measured with the impulse generator being connected with Coiler driving device motor with steel wire speed V, the cycle is here that plate shape roller rotates a circle the minimum time used while normally working, then utilizes following formula to calculate real-time coil of strip diameter D
3:
In formula, i is coiling machine gear box ratio;
When band steel relative measurement roller slip or electric motor of coiling machine encoder catastrophic failure, utilize following formula to calculate real-time coil of strip diameter D
3:
In formula, L
1for utilizing integrator synchronometer to calculate band steel in real time by length, h is outlet coil of strip one-tenth-value thickness 1/10, D
0for the outside barrel diameter of coiling machine;
4) to real-time coil of strip diameter D
3carry out validity check, obtain coil of strip diameter output valve D
2, verification principle is:
If D
3be greater than a cycle coil of strip diameter output valve D
2, think that this calculated value is effective, and use D
3upgrade coil of strip diameter output valve D
2;
If D
3be less than or equal to the coil of strip diameter output valve D in a cycle
2, think that this calculated value is invalid, now utilize
upgrade coil of strip diameter output valve D
2, in formula, T is that plate shape roller rotates a circle the minimum time used while normally working;
5) calculate cornerite according to the mode of batching with steel and coil of strip diameter output valve.
Press such scheme, if described step 5) strip coiling on batch mode, cornerite computing formula is:
If batch mode under strip coiling, cornerite computing formula is:
；
D is plate shape roller diameter, a is the horizontal range of plate shape roller longitudinal center line to coiling machine longitudinal center line, b is the vertical range of plate shape roller longitudinal center line to coiling machine longitudinal center line, c is the air line distance of working roll roll gap center and plate shape roller longitudinal center line, and e is the horizontal range of working roll roll gap center and plate shape roller longitudinal center line.
Press such scheme, the described plate shape roller minimum time T used that rotates a circle while normally work is:
In formula, d is plate shape roller diameter, V
maxfor the maximum mill speed of cold rolling unit.
Press such scheme, adopt equal-area method to calculate coil of strip initial diameter value D
1formula be:
Press such scheme, it also comprise step 6) by the cornerite calculating from Circular measure unit conversion Cheng Du unit, then send on the plate shape measurement value processing unit and active station HMI server of plat control system, carry out accurate measurement and the demonstration of online plate shape.
Beneficial effect of the present invention is:
1, the present invention compared with prior art, gives full play to the expanded function of the existing hardware device of cold rolled sheet shape control system, and effectively utilization goes out the strip coiling diameter of high accuracy and real-time continuous with steel wire speed and the direct physical relation indirect calculation of coiling machine rotating speed; And have the on-line testing link with coil of strip footpath calculated value, ensured the reasonability of calculated value.
2, in the inventive method computational process, consider plate shape roller mechanical erection deviation, more met the concrete condition in enforcement.
3,, compared with traditional theory computational methods, the inventive method significantly improves aspect computational accuracy; With compared with the additional measuring cell method in outside, the inventive method does not increase any equipment in ensureing computational accuracy, is conducive to control project investment level.
4, the inventive method can obtain high-precision cold-rolled strip steel shape roller cornerite value under the condition that does not increase any hardware device, effectively solve in cold rolled strip steel production process owing to steel, the cornerite of plate shape roller being calculated to the inaccurate plate shape testing result distortion that causes, cause exporting the technical problem that belt plate shape control effect degenerates, for the plate shape level of control that significantly improves cold-strip steel provides strong guarantee.
Brief description of the drawings
Fig. 1 batches schematic diagram on coiling machine in one embodiment of the invention;
Fig. 2 batches schematic diagram under coiling machine in one embodiment of the invention;
Fig. 3 is the flow chart of one embodiment of the invention;
Fig. 4 is cornerite comparison of computational results figure between the inventive method and conventional method.
In figure: 1, plate shape roller; 2, crimping machine.
Detailed description of the invention
A kind of cold-rolled strip steel shape roller cornerite on-line calculation method provided by the invention, as shown in Figure 3, before roll coil of strip threading, plat control system reads after the primary data in process computer, the specific works flow process that this inventive method is devoted oneself to work is: 1) start to batch rear use laser velocimeter on-line measurement outlet band steel actual time line speed, and calculate band steel and pass through in real time length L
1; 2) plate shape roller utilizes equal-area method to pass through in real time length L according to band steel after dropping into online detection
1calculate coil of strip initial diameter; 3) periodicity reads the measured value of laser velocimeter and impulse generator, calculates real-time coil of strip diameter; 4) above-mentioned real-time coil of strip diameter is carried out to validity check, obtain coil of strip diameter output valve; 5) batch mode and coil of strip diameter output valve according to actual coil of strip, calculate real-time cornerite value.Can also comprise step 6) Circular measure cornerite value is carried out to Conversion of measurement unit, the cornerite value after conversion is issued to plate shape measurement value processing unit and HMI server.
Below in conjunction with embodiment and Fig. 1 to Fig. 4, the invention will be further described, but do not limit the present invention.
Can be used for four rollers, six roller single chassis or multi-frame tandem mills based on a kind of cold-rolled strip steel shape roller cornerite on-line calculation method of the present invention.Below taking a single chassis six-high cluster mill as example, the product that six-high cluster mill can rolling comprises common plate, high-strength steel, part stainless steel and silicon steel etc.The present embodiment rolling be middle high grade silicon steel, type is UCM milling train, plate shape control device comprises that roller declination, the positive and negative roller of working roll, the positive roller of intermediate calender rolls, intermediate roll shifting and emulsion section are cooling etc.Wherein intermediate roll shifting is to preset according to strip width, and adjusting principle is that intermediate calender rolls body of roll edge is alignd with steel edge portion, also can be considered to add a correction by operation side, is transferred to a rear holding position constant; Emulsion section is cooling has larger characteristic time lag.Thereby the plate shape control device of on-line control mainly contains three kinds of roller declinations, the positive and negative roller of working roll, the positive roller of intermediate calender rolls, for eliminating the flatness defects such as monolateral wave, middle wave and the bilateral wave of the operation of rolling with steel.Basic mechanical design feature index and the device parameter of this unit are:
Mill speed: Max 900m/min, draught pressure: Max 18000KN, maximum rolling force square: 140.3KN × m, coiling tension: Max 220KN, main motor current: 5500KW;
Supplied materials thickness range: 1.8 ~ 2.5mm, supplied materials width range: 850 ~ 1350mm, outgoing gauge scope: 0.3mm ~ 1.0mm;
Work roll diameter: 290 ~ 340mm, working roll height: 1400mm, intermediate calender rolls diameter: 440 ~ 500mm, intermediate calender rolls height: 1640mm, backing roll diameter: 1150 ~ 1250mm, backing roll height: 1400mm;
Every side work roll bending power :-280 ~ 350KN, every side intermediate calender rolls bending roller force: 0 ~ 500KN, the axial traversing amount of intermediate calender rolls :-120 ~ 120mm, auxiliary hydraulic system pressure: 14MPa, balance bending system pressure: 28MPa, press down system pressure: 28MPa.
In order to realize the plate shape measuring ability with steel to outlet, to survey ABB AB of Sweden plate shape roller is installed in milling train outlet, this plate shape roller diameter is 313mm, i.e. d=313mm.Be made up of solid steel axle, broad ways is divided into a measured zone every 52mm or 26mm, and in each measured zone, the surrounding at measuring roller is uniform-distribution with four grooves to place magnetoelasticity power sensor vertically, and the outside of sensor is wrapped up by steel loop.Product specification in this example (thickness × width) is: 0.30mm × 1250mm, i.e. h=0.30mm.In the middle of plate shape roller, 14 measurement section width are 52mm, and all the other are 26mm near transmission side and each 12 the measurement section width of fore side, plate shape roller total length 1352mm.
After coiling machine is installed on plate shape roller, when strip coiling optional use batch (Fig. 1) or under batch (Fig. 2) two kinds and batch mode.The present embodiment reel overall diameter is D
0=600mm, and be equipped with the impulse generator being connected with coiling machine 2 driving motors be used for measure reel-motor rotating speed.Coiling machine gear box ratio primary election principle is the highest permission working speed of motor and the ratio of the high workload rotating speed of reel reality, i=1.37 in the present embodiment.In addition, in field measurement the present embodiment, plate shape roller 1 longitudinal center line is to the horizontal range a (unit is mm) of coiling machine 2 longitudinal center lines, plate shape roller 1 longitudinal center line is to the vertical range b (unit is mm) of coiling machine 2 longitudinal center lines, the air line distance c (unit is mm) of working roll roll gap center and plate shape roller 1 longitudinal center line, the horizontal range e (unit is mm) of working roll roll gap center and plate shape roller 1 longitudinal center line.
Fig. 3 has provided the online calculation flow chart of cold-rolled strip steel shape roller cornerite of the inventive method.Based on Fig. 3, the present embodiment carries out cold-rolled strip steel shape roller cornerite and at the concrete calculation process of line computation is:
S1) read the following primary data in control system process computer: outlet coil of strip one-tenth-value thickness 1/10 h (unit is mm), the outside barrel diameter D of coiling machine
0(unit is mm), plate shape roller diameter d (unit is mm), plate shape roller longitudinal center line is to the horizontal range a (unit is mm) of coiling machine longitudinal center line, plate shape roller longitudinal center line is to the vertical range b (unit is mm) of coiling machine longitudinal center line, the air line distance c (unit is mm) of working roll roll gap center and plate shape roller longitudinal center line, the horizontal range e (unit is mm) of working roll roll gap center and plate shape roller longitudinal center line.
S2) band steel threading and on coiling machine, start to batch after, measure outlet band steel actual time line speed V (unit is m/min) by the laser velocimeter continuity that is arranged on milling train exit, and utilize integrator synchronometer to calculate band steel and pass through in real time length L
1(unit is m), after calculating each time, all upgrades last calculated value with currency.
S3), in the time that plate shape roller drops into online plate shape detection, adopt equal-area method to calculate coil of strip initial diameter value D
1(unit is mm):
And by D
1drop into online plate shape as plate shape roller and detect rear coil of strip diameter output valve D
2the initial value of (unit is mm).
S4) in the online plate shape of plate shape roller testing process, periodically read the reel-motor rotation speed n (unit is turn/min) that the laser velocimeter that is arranged on milling train exit is measured outlet band steel wire speed V (unit is m/min) in real time and the impulse generator that is connected with Coiler driving device motor is measured, here when sampling period T (unit is ms) normally works for plate shape roller, rotate a circle the minimum time used, then utilize following formula to calculate real-time coil of strip diameter D
3(unit is mm):
In formula, i is coiling machine gear box ratio.
S5) to step S4) in the real-time coil of strip diameter D that calculates
3carry out validity check, verification principle is: if D
3be greater than a cycle coil of strip diameter output valve D
2, think that this calculated value is effective, and with this calculated value D
3upgrade coil of strip diameter output valve D
2; If D
3be less than or equal to a cycle coil of strip diameter output valve D
2, think that this calculated value is invalid, now utilize
upgrade coil of strip diameter output valve D
2.
S6) judge strip coiling mode, if strip coiling be in Fig. 1, provide on batch mode, now cornerite computing formula is:
If strip coiling be in Fig. 2, provide under batch mode, cornerite now
computing formula is:
S7) by step S6) in the cornerite that calculates
carry out Conversion of measurement unit, by Circular measure unit conversion Cheng Du unit, cornerite after conversion is sent on the plate shape measurement value processing unit and active station HMI server of plat control system, realize accurate measurement and the Presentation Function of online plate shape, described cornerite Conversion of measurement unit formula is:
In formula,
for the cornerite value after Conversion of measurement unit.
Especially, because the operation of rolling is complicated and changeable, when occurring in equipment running process that band steel relative measurement roller slides or when electric motor of coiling machine encoder catastrophic failure, can not utilizing step S4) in the computing formula that provides calculate real-time coil of strip diameter D
3time, the optional D that carries out with the following method
3in line computation:
In formula, L
1in order to utilize integrator synchronometer to calculate band steel, by length, (unit is m) in real time; H is outlet coil of strip one-tenth-value thickness 1/10 (unit is mm); D
0for the outside barrel diameter (unit is mm) of coiling machine.
Especially, the definite method of minimum time used of rotating a circle when described plate shape roller is normally worked is:
，
In formula, d is plate shape roller diameter, and unit is mm, has d=313mm in the present embodiment; V
maxfor the maximum mill speed of cold rolling unit, unit is m/min,, in the present embodiment, there is V
max=900m/min.
By step S6) in cornerite
computing formula can find out, in strip coiling process, a, b, c, d and e are invariable, only have coil of strip diameter output valve D
2increase therefore D along with strip coiling process
2precision directly have influence on cornerite
precision.So, compare distinct methods for D
2computational accuracy quality, namely distinct methods is for cornerite
computational accuracy quality.
First, we carry out traditional theory computational methods and the inventive method and are calculating coil of strip diameter output valve D
2time superiority-inferiority comparison.Due to the restriction of project investment, common rolling mill production line is not equipped with measurement devices such as laser measuring apparatus, sonar to measure instrument, thereby can not obtain online and batch diameter value actual value with steel.But, each coiled strip steel batch complete after, the measurement that we can off-line it finally batch diameter actual value.In this case, we can by distinct methods relatively for the some groups of roll coil of strips finally batch diameter calculated value and the ratio that finally batches diameter actual value, obtain the order of quality between method.Fig. 4 provided in the 20 coiled strip steel production processes of choosing at random in the present embodiment, utilize respectively that traditional theory computational methods and the inventive method obtain by finally batching diameter calculated value and the distribution map of ratio that finally batches diameter actual value.It is 1.2326 that the traditional theory computational methods that provide in Fig. 4 are obtained to the ratio data of 20 result of averaging, the calculation deviation that is to say traditional theory computational methods is 23.46%, corresponding with it, it is 1.0061 that the inventive method obtains the ratio data of 20 result of averaging, the calculation deviation that is to say traditional theory computational methods is 0.61%, and its precision meets technical requirement completely.
Secondly, the computational accuracy of the inventive method is almost in full accord with actual value, and does not increase any newly-increased measurement device investment of unit.Compared with being equipped with inspection method measurement devices such as laser measuring apparatus, sonar to measure instrument with needs, in meeting required precision, greatly reduce investment, be conducive to control project investment level; And the inventive method has for the verification of external interference factor and alternative means, can adapt to the work condition environment that coil of strip center of gravity possibility is eccentric, dust steam may affect ultrasonic measurement that skids, batches such as slewing rollers.
In a word, the inventive method can obtain high-precision cold-rolled strip steel shape roller cornerite value under the condition that does not increase any hardware device, effectively solve in cold rolled strip steel production process owing to steel, the cornerite of plate shape roller being calculated to the inaccurate plate shape testing result distortion that causes, cause exporting the technical problem that belt plate shape control effect degenerates, for the plate shape level of control that significantly improves cold-strip steel provides strong guarantee.
Above embodiment is only for calculating thought of the present invention and feature are described, its object is to make those skilled in the art can understand content of the present invention and implement according to this, and protection scope of the present invention is not limited to above-described embodiment.So the disclosed principle of all foundations, equivalent variations or the modification that mentality of designing is done, all within protection scope of the present invention.
Claims (3)
1. a cold-rolled strip steel shape roller cornerite on-line calculation method, is characterized in that: it comprises the following steps:
1) band steel threading and on coiling machine, start to batch after, measure outlet band steel actual time line speed V by being arranged on the laser velocimeter continuity in milling train exit, and utilize integrator synchronometer to calculate band steel and pass through in real time length L
1;
2), in the time that plate shape roller drops into online plate shape detection, adopt equal-area method to pass through in real time length L according to band steel
1calculate coil of strip initial diameter value D
1, and by D
1drop into online plate shape as plate shape roller and detect rear coil of strip diameter output valve D
2initial value;
3) calculate real-time coil of strip diameter D
3:
In the online plate shape of plate shape roller testing process, periodically read the laser velocimeter that is arranged on milling train exit and measure in real time the reel-motor rotation speed n that outlet is measured with the impulse generator being connected with Coiler driving device motor with steel wire speed V, the cycle is here that plate shape roller rotates a circle the minimum time used while normally working, then utilizes following formula to calculate real-time coil of strip diameter D
3:
In formula, i is coiling machine gear box ratio;
When band steel relative measurement roller slip or electric motor of coiling machine encoder catastrophic failure, utilize following formula to calculate real-time coil of strip diameter D
3:
In formula, L
1for utilizing integrator synchronometer to calculate band steel in real time by length, h is outlet coil of strip one-tenth-value thickness 1/10, D
0for the outside barrel diameter of coiling machine;
4) to real-time coil of strip diameter D
3carry out validity check, obtain coil of strip diameter output valve D
2, verification principle is:
If D
3be greater than a cycle coil of strip diameter output valve D
2, think that this calculated value is effective, and use D
3upgrade coil of strip diameter output valve D
2;
If D
3be less than or equal to the coil of strip diameter output valve D in a cycle
2, think that this calculated value is invalid, now utilize
upgrade coil of strip diameter output valve D
2, in formula, T is that plate shape roller rotates a circle the minimum time used while normally working;
5) calculate cornerite according to the mode of batching with steel and coil of strip diameter output valve;
If described step 5) strip coiling on batch mode, cornerite computing formula is:
If strip coiling batches mode under being, cornerite computing formula is:
D is plate shape roller diameter, a is the horizontal range of plate shape roller longitudinal center line to coiling machine longitudinal center line, b is the vertical range of plate shape roller longitudinal center line to coiling machine longitudinal center line, c is the air line distance of working roll roll gap center and plate shape roller longitudinal center line, and e is the horizontal range of working roll roll gap center and plate shape roller longitudinal center line;
The formula that adopts equal-area method to calculate coil of strip initial diameter value D1 is:
2. cold-rolled strip steel shape roller cornerite on-line calculation method according to claim 1, is characterized in that: the described plate shape roller minimum time T used that rotates a circle while normally work is:
In formula, d is plate shape roller diameter, V
maxfor the maximum mill speed of cold rolling unit.
3. cold-rolled strip steel shape roller cornerite on-line calculation method according to claim 1 and 2, it is characterized in that: it also comprise step 6) by the cornerite calculating from Circular measure unit conversion Cheng Du unit, send to again on the plate shape measurement value processing unit and active station HMI server of plat control system, carry out accurate measurement and the demonstration of online plate shape.
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| JP3636151B2 (en) * | 2002-03-12 | 2005-04-06 | 住友金属工業株式会社 | Metal strip manufacturing method |
| JP4709628B2 (en) * | 2005-10-18 | 2011-06-22 | 新日本製鐵株式会社 | Cold rolled steel sheet manufacturing method |
| CN101758084B (en) * | 2008-12-26 | 2012-01-11 | 宝山钢铁股份有限公司 | Model self-adapting sheet shape prediction and control method |
| CN101920267B (en) * | 2009-06-09 | 2013-05-01 | 鞍钢股份有限公司 | Variable wrap angle flatness control parameter processing method for cold rolling mill |
| CN102527736B (en) * | 2012-01-06 | 2014-08-13 | 中冶南方工程技术有限公司 | Method for confirming reeling radius of cold-rolled steel strip |
| CN102581030B (en) * | 2012-03-19 | 2013-11-20 | 中冶南方工程技术有限公司 | Method for determining closed-loop shape control cycle of cold-rolled strip steel plate |
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