CN110227725A - Roll gap self-learning deviation rectifying method and device - Google Patents
Roll gap self-learning deviation rectifying method and device Download PDFInfo
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- CN110227725A CN110227725A CN201910438242.1A CN201910438242A CN110227725A CN 110227725 A CN110227725 A CN 110227725A CN 201910438242 A CN201910438242 A CN 201910438242A CN 110227725 A CN110227725 A CN 110227725A
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- 238000005096 rolling process Methods 0.000 claims abstract description 133
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
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- 238000004804 winding Methods 0.000 claims description 34
- 238000005259 measurement Methods 0.000 claims description 26
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- 238000004088 simulation Methods 0.000 claims description 5
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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
- B21B37/58—Roll-force control; Roll-gap control
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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
- B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force
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Abstract
The invention discloses a roll gap self-learning deviation rectifying method and device, relates to the technical field of steel rolling, is applied to a multi-frame continuous rolling process, and comprises the following steps: collecting current rolling data of each stand in a multi-stand continuous rolling mill when current coiled steel passes through a last stand of the multi-stand continuous rolling mill; determining the actual rolling force of each rack based on the current rolling data and the zone bit of the recalculation rolling force of each rack; obtaining the current values of the self-learning coefficients of the racks; judging whether the current value of the self-learning coefficient is within a preset range, if so, obtaining an updated value of the self-learning coefficient based on the current value of the self-learning coefficient and the old value of the self-learning coefficient; controlling the multi-frame continuous rolling mill to roll the next coil of strip steel according to the self-learning coefficient updating value; the problem of inaccurate roll gap setting caused by abnormal conditions can be solved, and the roll gap setting accuracy is improved, so that the rolling quality of the strip steel is improved.
Description
Technical field
The present invention relates to the method and devices that technical field of steel rolling more particularly to a kind of roll gap self study are rectified a deviation.
Background technique
In hot rolling production process, roll gap setting accuracy directly affects strip finished product thickness, and steel strip thickness controls precision
Reflect control of product quality level.
Currently, the side that the self study of hot rolling line roll gap mainly uses second flow thickness to make the difference compared with thickness gauge thickness
Method.Each rack second flow thickness surveys thickness according to outlet, with the calculating of second flow equal principle；Each rack thickness gauge thickness according to
The data such as actual measurement roll-force are obtained by roll gap equation inverse.In production process, discovery causes to survey roll-force when extraneous factor
When generating fluctuation, the method for the above roll gap self study cannot effectively improve roll gap setting accuracy.Such as certain volume rolling force setup
It is bigger than normal, when crossing process interstand tension increases extremely, actual measurement roll-force will be caused and to calculate roll-force again less than normal, rolled at this time
Power self study processed cannot correct rolling force setup situation bigger than normal.Keep the roll-force used when lower a roll of setting roll gap bigger than normal, makes
Less than normal at roll gap setting, head thickness is partially thin.
Summary of the invention
The embodiment of the present application solves real in the related technology by providing a kind of method and device of roll gap self study correction
When surveying roll-force and generating fluctuation, the technical issues of roll gap setting accuracy cannot be effectively improved.
On the one hand, the application is provided the following technical solutions by the embodiment of the application:
A kind of method of roll gap self study correction, is applied to multi-frame continuous rolling process, which comprises
When current coiled strip steel passes through the last rack of Multi-stand continuous rolling mill, each rack in the Multi-stand continuous rolling mill is acquired
Current rolling data；
Call the flag bit for calculating roll-force again of each rack；
The flag bit for calculating roll-force again based on the current rolling data and each rack, determines each rack
Practical roll-force；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
Based on the roll-force of the setting of each rack described in the practical roll-force and the current winding steel mill process, obtain
Obtain the self study coefficient current value of each rack；
Whether within a preset range the self study coefficient current value is judged, if so, working as based on the self study coefficient
Preceding value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value is the current coiled strip steel
Each rack described in the operation of rolling is connected with fixed self study coefficient value；
Whether within a preset range the self study coefficient update value is judged, if so, more based on the self study coefficient
New value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
Optionally, described to be specifically included based on the self study coefficient current value obtained from learning coefficient updated value:
The self study coefficient current value, which is multiplied with the difference of self study coefficient old value with self study gain coefficient, to be multiplied
Product, the product adds self study coefficient old value, obtained from learning coefficient updated value.
Optionally, when the flag bit for calculating roll-force again is the first flag bit, the current rolling data includes roller
Speed, tension and exit thickness, the practical roll-force are to calculate roll-force again, and the roll-force that calculates again is currently rolled according to described
Data processed are obtained by tube rolling simulation formula.
Optionally, when the flag bit for calculating roll-force again is the second flag bit, the current rolling data includes real
Roll-force is surveyed, the practical roll-force is the actual measurement roll-force.
Optionally, described based on each rack setting described in the practical roll-force and the current winding steel mill process
Roll-force, obtain the self study coefficient current value of each rack, specifically include:
The roll-force that the practical roll-force is set divided by each rack described in the current winding steel mill process obtains
Self study coefficient current value.
Optionally, the method also includes:
If the self study coefficient update value is not in the preset range, based on the boundary value of the preset range,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel.
Optionally, if the self study coefficient update value is not in the preset range, it is based on the default model
Value is enclosed, the Multi-stand continuous rolling mill is controlled and next coiled strip steel is rolled, specifically include:
When the self study coefficient update value is greater than the upper confinement boundary value of the preset range, the upper confinement boundary is utilized
Value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel；
When the self study coefficient update value is less than the lower limit of the preset range boundary value, the lower limit boundary is utilized
Value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
Optionally, described to be based on the self study coefficient update value, the Multi-stand continuous rolling mill is controlled to next coiled strip steel
It is rolled, is specifically included:
Setting roll-force when by next winding steel rolling obtains lower a roll multiplied by the self study coefficient update value
Correction roll-force when belt steel rolling；
According to the correction roll-force, next coiled strip steel is rolled.
Optionally, the boundary value based on the preset range controls the Multi-stand continuous rolling mill to next coiled strip steel
It is rolled, is specifically included:
Setting roll-force when by next winding steel rolling obtains lower a roll multiplied by the boundary value of the preset range
Correction roll-force when belt steel rolling；
According to the correction roll-force, next coiled strip steel is rolled.
On the other hand, the application provides a kind of device of roll gap self study correction by another embodiment of the application, answers
For multi-frame continuous rolling process, comprising:
Data acquisition module acquires the multimachine when for passing through the last rack of Multi-stand continuous rolling mill in current coiled strip steel
The current rolling data of each rack in frame tandem mill；
Indicate calling module, for calling the flag bit for calculating roll-force again of each rack；
First obtains module, for the mark for calculating roll-force again based on the current rolling data and each rack
Position obtains the practical roll-force of each rack；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
Second obtains module, for based on each machine described in the practical roll-force and the current winding steel mill process
Fixed roll-force is set up, the self study coefficient current value of each rack is obtained；
Third obtains module, for whether within a preset range to judge the self study coefficient current value, if so, being based on
The self study coefficient current value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value
Fixed self study coefficient value is connected with for each rack described in the current winding steel mill process；
Control module, for whether within a preset range to judge the self study coefficient update value, if so, based on described
Self study coefficient update value controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The present invention is applied to multi-frame continuous rolling process, firstly, acquiring the last machine that current coiled strip steel passes through Multi-stand continuous rolling mill
The current rolling data of each rack when frame；Then the flag bit for calculating roll-force again of each rack is called；Based on described
The flag bit for calculating roll-force again of current rolling data and each rack, determines the practical roll-force of each rack；Institute
Stating practical roll-force is to calculate roll-force or actual measurement roll-force again；Based on the practical roll-force and the current winding steel rolling
The roll-force of each rack setting in the process, obtains the self study coefficient current value of each rack；Judge the self study
Within a preset range whether coefficient current value, if so, being based on the self study coefficient current value and self study coefficient old value, obtain
Derived from learning coefficient updated value；The self study coefficient old value is that current coiled strip steel carries out the self study system set in the operation of rolling
Numerical value；According to the self study coefficient update value, controls the Multi-stand continuous rolling mill and next coiled strip steel is rolled, realization pair
The correction of next coiled strip steel；Due to carrying out the amendment of self study coefficient value according to the self study coefficient old value of setting, existing skill is avoided
It cannot be entangled in art because calculating roll-force progress self study using the consistent actual measurement roll-force of variation tendency and again and correcting bring
The case where positive rolling force deviation, can improve under abnormal conditions, if actual tension is bigger than normal, surveys roll-force and calculate roll-force again
Less than normal, roll-force self study cannot rectify a deviation to lower a roll of setting roll-force, cause roll gap to set not accurate problem, improve
Roll gap setting is accurate, to improve belt steel rolling quality；Meanwhile it can select to use according to the flag bit for calculating roll-force again and count again
It calculates roll-force or surveys the calculating that roll-force carries out self study coefficient current value, scene is facilitated to be operated according to operating condition selection,
The roll-force calculated again can avoid the inaccurate situation of actual measurement roll-force detection that may be present, improve the reliability of correction.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the method flow diagram of the roll gap self study correction in an embodiment of the present invention；
Fig. 2 is the center line thickness deviation curve obtained in an embodiment of the present invention using existing method；
Fig. 3 is the center line thickness deviation song obtained in an embodiment of the present invention using the method for roll gap self study correction
Line；
Fig. 4 is the structure drawing of device of the roll gap self study correction in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application solves different in the prior art by providing a kind of method and apparatus of roll gap self study correction
In normal situation, the problem of roll-force self study cannot effectively rectify a deviation to setting accuracy.
The technical solution of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows:
A kind of method of roll gap self study correction, is applied to hot continuous rolling process, which comprises
When current coiled strip steel passes through the last rack of Multi-stand continuous rolling mill, each rack in the Multi-stand continuous rolling mill is acquired
Current rolling data；Call the flag bit for calculating roll-force again of each rack；Based on the current rolling data and described
The flag bit for calculating roll-force again of each rack determines the practical roll-force of each rack；The practical roll-force is to count again
Calculate roll-force or actual measurement roll-force；It is set based on each rack described in the practical roll-force and the current winding steel mill process
Fixed roll-force obtains the self study coefficient current value of each rack；Judge the self study coefficient current value whether pre-
If in range, if so, being based on the self study coefficient current value and self study coefficient old value, being updated obtained from learning coefficient
Value；The self study coefficient old value is that each rack described in the current winding steel mill process is connected with fixed self study coefficient
Value；Whether within a preset range to judge the self study coefficient update value, if so, it is based on the self study coefficient update value,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Illustrate first, herein presented term "and/or", only a kind of incidence relation for describing affiliated partner, table
Show there may be three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this three
Kind situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Embodiment one
In the present embodiment, a kind of method of roll gap self study correction is applied to multi-frame continuous rolling process, the method packet
It includes:
S101, when current coiled strip steel is by the last rack of Multi-stand continuous rolling mill, acquire each in the Multi-stand continuous rolling mill
The current rolling data of rack；
S102, the flag bit for calculating roll-force again for calling each rack；
S103, the flag bit for calculating roll-force again based on the current rolling data and each rack, determine described in
The practical roll-force of each rack；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
S104, the rolling based on the setting of each rack described in the practical roll-force and the current winding steel mill process
Power obtains the self study coefficient current value of each rack；
S105, whether within a preset range the self study coefficient current value is judged, if so, being based on the self study system
Number current value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value is the current volume
Each rack is connected with fixed self study coefficient value during belt steel rolling；
S106, whether within a preset range the self study coefficient update value is judged, if so, being based on the self study system
Number updated value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
It should be noted that method of the invention, is that the improvement of roll gap self study programmed logic method is being embodied
When, the quantity at least two of rack, particular number is unrestricted, by taking seven rack continuous rolling process as an example, can set such as the following table 1
Self study parameter list, self study logic is controlled.
1 self study parameter list of table
| Rack | F1 | F2 | F3 | F4 | F5 | F6 | F7 |
| Whether for roll gap setting flag bit | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Self-learning function puts into flag bit | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Self study gain coefficient | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Self study current value lower limit | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 |
| The self study current value upper limit | 1.08 | 1.08 | 1.08 | 1.08 | 1.08 | 1.08 | 1.08 |
| Self study updated value lower limit | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 |
| The self study updated value upper limit | 1.05 | 1.05 | 1.05 | 1.05 | 1.05 | 1.05 | 1.05 |
| Using calculating roll-force flag bit again | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
In table 1, F1~F7 represents the 1 to 7th rack, and setting parameter includes self study gain coefficient, self study current value
Bound, self study updated value bound, self-learning function put into flag bit and use calculates roll-force flag bit again.It is wherein
No to be not applied to roll gap setting for the roll gap setting representative of flag bit 0,1 representative is applied to roll gap and sets, and the setting in table indicates 7
A rack whole application roll seams fixed；Self-learning function puts into flag bit item 0 and represents without self study calculating, 1 representative application
Method of the invention carries out self study calculating, but does not update and (be not applied to lower a roll)；2, which represent application method of the invention, carries out
Self study calculates and updates and (be applied to lower a roll), and setting indicates that 7 racks all carry out certainly using method of the invention in table 1
Study calculates and updates and (be applied to lower a roll).
Also, it is to be understood that being learnt by oneself using calculating roll-force flag bit 1 again and representing using calculating roll-force again
Coefficient current value to be practised to calculate, 0 representative carries out self study coefficient current value using actual measurement roll-force and calculates, and in the present invention, all it is
The calculating of self study coefficient current value is carried out using roll-force is calculated again, but in using the present invention, it can alternatively be used.
It is described in detail below with reference to each step of the Fig. 1 to the method for the present invention.
Referring to Fig. 1, S101 is first carried out, when current coiled strip steel passes through the last rack of Multi-stand continuous rolling mill, described in acquisition
The current rolling data of each rack in Multi-stand continuous rolling mill.
Specifically, in specific continuous rolling process, method of the invention, first when being completed to previous winding steel rolling, i.e.,
When through last rack, the parameter of each rack of milling train is acquired, to obtain the actual rolling parameter in the operation of rolling, i.e. institute
The current rolling data stated.
More specifically, in order to more accurately acquire real time data, it is high that current coiled strip steel head position reaches last rack outlet
Temperature meter, triggers self study timing, acquires current rolling data.
Next, executing S102, the flag bit for calculating roll-force again of each rack is called；
As an alternative embodiment, can be when executing this method, selection uses and calculates roll-force again or do not make
With therefore, setting calculates the flag bit of roll-force again, selects for operator.
Next, executing S103, the mark for calculating roll-force again based on the current rolling data and each rack
Position, determines the practical roll-force of each rack.
Specifically, the current rolling data including but not limited to practical roll-force, mill speed and tension,
The practical roll-force is to calculate roll-force or actual measurement roll-force again；
When the flag bit for calculating roll-force again is the first flag bit, the current rolling data includes mill speed
The underlying parameter of tube rolling simulation is used for tension etc., the practical roll-force to be described to calculate rolling again to calculate roll-force again
Power is obtained according to the current rolling data by tube rolling simulation formula.In the specific implementation process, it is calculated again when described
When the flag bit of roll-force is the first flag bit, using mill speed described in roll-force formula manipulation and tension, each rack is obtained
Calculate roll-force again.
When the flag bit for calculating roll-force again is the second flag bit, the current rolling data includes actual measurement rolling
Power, the practical roll-force are the actual measurement roll-force.In the specific implementation process, when the mark for calculating roll-force again
When position is the second flag bit, practical roll-force is obtained based on actual measurement roll-force.
As long as, for example, the first flag bit is 1, second marks specifically, the first flag bit and the second flag bit can be distinguished
Will position is 0.
Next, S104 is executed, based on each machine described in the practical roll-force and the current winding steel mill process
Fixed roll-force is set up, the self study coefficient current value of each rack is obtained.
Specifically, the rolling that the practical roll-force is set divided by each rack described in the current winding steel mill process
Power, obtained from learning coefficient current value.
Due in some cases, then calculates each rack described in roll-force and the current winding steel mill process and set
Roll-force variation tendency it is inconsistent, for example, actual tension is bigger than normal, actual measurement roll-force with to calculate roll-force again less than normal, can be into
The amendment of row trend avoids the prior art using the consistent actual measurement roll-force of trend and calculates roll-force again and modified can not ask
Topic.
Next, executing S105, whether within a preset range the self study coefficient current value is judged, if so, being based on
The self study coefficient current value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value
The self study coefficient value of the setting of Multi-stand continuous rolling mill described in the operation of rolling is carried out for the current coiled strip steel.
Specifically, the self study coefficient current value is multiplied with the difference of self study coefficient old value with self study gain coefficient
Product is obtained, the product adds self study coefficient old value, obtained from learning coefficient updated value.
The bound of preset value, can be according to the needs of correction, after being tested, self-setting；Self study gain coefficient
It can also be configured according to same method, the method for this law and with no restrictions, as long as can be carried out correction.
It should be noted that the judgement self study coefficient current value is whether it is within the preset range, the side
Method further include:
If the self study coefficient current value not in the preset range, returns to the flag bit that transfinites.At this point, without
Self study updates, and self study parameter when current winding steel rolling is continued to use in the rolling of next coiled strip steel.
If return is transfinited flag bit specifically, the self study coefficient current value is in the preset range,
It specifically includes:
When the self study coefficient current value is greater than the upper confinement boundary value of the preset range, returning to first transfinites mark
Position；
When the self study coefficient current value is less than the lower limit of the preset range boundary value, returning to second transfinites mark
Position.
Finally, executing S106, whether within a preset range the self study coefficient update value is judged, if so, being based on institute
Self study coefficient update value is stated, the Multi-stand continuous rolling mill is controlled and next coiled strip steel is rolled.
At this point, when it is implemented, setting roll-force when by next winding steel rolling is multiplied by the self study coefficient
Updated value obtains correction roll-force when next winding steel rolling；
According to the correction roll-force, next coiled strip steel is rolled.
More specifically, when correcting roll-force for next winding steel rolling, the Bounce distance of roll gap setting is calculated.
As another situation, when the self study coefficient update value is not in the preset range, the method is also
Include:
If the self study coefficient update value is not in the preset range, based on the boundary value of the preset range,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel.
Specifically,
When the self study coefficient update value is greater than the upper confinement boundary value of the preset range, the upper confinement boundary is utilized
Value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel；
When the self study coefficient update value is less than the lower limit of the preset range boundary value, the lower limit boundary is utilized
Value, controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
At this point, when it is implemented, setting roll-force when by next winding steel rolling is multiplied by the preset range
Boundary value obtains correction roll-force when next winding steel rolling；
According to the correction roll-force, next coiled strip steel is rolled.
It should be noted that when a coiled strip steel is rolled under control, each rack that when current winding steel rolling obtains
Self study update the amendment that coefficient respectively corresponds the roll-force of each rack when controlling next winding steel rolling.
Below by a typical application example, the technical solution of the present embodiment is further described: in certain 1580mm
When hot rolling line rolls 2.75mm*1208mm specification STC1, after F6 rack threading, interstand tension increases strip, and F7 is real
It surveys roll-force to reduce, the partially thin such as Fig. 2 of head thickness is influenced, it is less than normal that F7 rack calculates roll-force again by actual measurement tension increase.Specifically
Numerical value is as follows.If being not provided with roll gap self-learning method of the invention, pass through roll-force self study, the setting roll-force of lower a roll
Setting roll-force cannot be kept bigger than normal to reduced adjustment in direction, will be less than normal with the roll gap of this tube rolling simulation, cause head thickness
It is still partially thin.Using roll gap self-learning method of the invention, self study coefficient current value, the use being arranged in model table are calculated first
Calculating roll-force flag bit again is 1, then surveys roll-force using calculating roll-force (8743T) again, sets roll-force as 9546T,
The then ratio that self study coefficient current value is 8743 and 9546, i.e., 0.9159.Then self study coefficient update value is calculated, for certainly
The difference of learning coefficient current value (0.9159) and self study coefficient old value (0.9612) is multiplied by self study gain coefficient (0.15)
In addition self study coefficient old value (0.9612), i.e., 0.9544.Next winding up roller seams timing, and calculating the roll-force that spring uses is to be somebody's turn to do
Volume setting roll-force reduces the roll-force of roll gap calculating multiplied by self study coefficient (0.9544), and roll gap setting will increase, and changes
The partially thin trend of kind head thickness, effect are as shown in Figure 3.
Technical solution in above-mentioned the embodiment of the present application, at least have the following technical effects or advantages:
The present invention is applied to multi-frame continuous rolling process, firstly, acquiring the last machine that current coiled strip steel passes through Multi-stand continuous rolling mill
The current rolling data of each rack when frame；Then the flag bit for calculating roll-force again of each rack is called；Based on described
The flag bit for calculating roll-force again of current rolling data and each rack, determines the practical roll-force of each rack；Institute
Stating practical roll-force is to calculate roll-force or actual measurement roll-force again；Based on the practical roll-force and the current winding steel rolling
The roll-force of each rack setting in the process, obtains the self study coefficient current value of each rack；Judge the self study
Within a preset range whether coefficient current value, if so, being based on the self study coefficient current value and self study coefficient old value, obtain
Derived from learning coefficient updated value；The self study coefficient old value is that current coiled strip steel carries out the self study system set in the operation of rolling
Numerical value；According to the self study coefficient update value, controls the Multi-stand continuous rolling mill and next coiled strip steel is rolled, realization pair
The correction of next coiled strip steel；Due to carrying out the amendment of self study coefficient value according to the self study coefficient old value of setting, existing skill is avoided
It cannot be entangled in art because calculating roll-force progress self study using the consistent actual measurement roll-force of variation tendency and again and correcting bring
The case where positive rolling force deviation, can improve under abnormal conditions, if actual tension is bigger than normal, surveys roll-force and calculate roll-force again
Less than normal, roll-force self study cannot rectify a deviation to lower a roll of setting roll-force, cause roll gap to set not accurate problem, improve
Roll gap setting is accurate, to improve belt steel rolling quality；Meanwhile it can select to use according to the flag bit for calculating roll-force again and count again
It calculates roll-force or surveys the calculating that roll-force carries out self study coefficient current value, scene is facilitated to be operated according to operating condition selection,
The roll-force calculated again can avoid the inaccurate situation of actual measurement roll-force detection that may be present, improve the reliability of correction.
Embodiment two
In the present embodiment, a kind of device of roll gap self study correction is applied to multi-frame continuous rolling process, referring to fig. 4, packet
It includes:
Data acquisition module acquires the multimachine when for passing through the last rack of Multi-stand continuous rolling mill in current coiled strip steel
The current rolling data of each rack in frame tandem mill；
Indicate calling module, for calling the flag bit for calculating roll-force again of each rack；
First obtains module, for the mark for calculating roll-force again based on the current rolling data and each rack
Position obtains the practical roll-force of each rack；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
Second obtains module, for based on each machine described in the practical roll-force and the current winding steel mill process
Fixed roll-force is set up, the self study coefficient current value of each rack is obtained；
Third obtains module, for whether within a preset range to judge the self study coefficient current value, if so, being based on
The self study coefficient current value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value
Fixed self study coefficient value is connected with for each rack described in the current winding steel mill process；
Control module, for whether within a preset range to judge the self study coefficient update value, if so, based on described
Self study coefficient update value controls the Multi-stand continuous rolling mill and rolls to next coiled strip steel.
The device for the roll gap self study correction introduced by the present embodiment for implement in the embodiment of the present application one roll gap from
Learn device used by the method for correction, so the side based on the correction of roll gap self study described in the embodiment of the present application one
Method, those skilled in the art can understand the specific embodiment and its various change form of the device of the present embodiment,
So how to realize that the method in the embodiment of the present application is no longer discussed in detail for the system at this.As long as the affiliated technology in this field
Personnel implement device used by the method that roll gap self study is rectified a deviation in the embodiment of the present application, belong to what the application to be protected
Range.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of method of roll gap self study correction, is applied to multi-frame continuous rolling process, which is characterized in that the described method includes:
When current coiled strip steel is by the last rack of Multi-stand continuous rolling mill, the current of each rack in the Multi-stand continuous rolling mill is acquired
Rolling data；
Call the flag bit for calculating roll-force again of each rack；
The flag bit for calculating roll-force again based on the current rolling data and each rack, determines the reality of each rack
Border roll-force；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
Based on the roll-force of the setting of each rack described in the practical roll-force and the current winding steel mill process, institute is obtained
State the self study coefficient current value of each rack；
Whether within a preset range the self study coefficient current value is judged, if so, being based on the self study coefficient current value
With self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value is the current winding steel rolling
Each rack is connected with fixed self study coefficient value in the process；
Whether within a preset range to judge the self study coefficient update value, if so, it is based on the self study coefficient update value,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel.
2. the method as described in claim 1, which is characterized in that it is described to be based on the self study coefficient current value, it is learnt by oneself
Coefficient update value is practised, is specifically included:
The self study coefficient current value is multiplied to obtain product with self study gain coefficient with the difference of self study coefficient old value, institute
Product is stated plus self study coefficient old value, obtained from learning coefficient updated value.
3. the method as described in claim 1, which is characterized in that the flag bit for calculating roll-force again is the first flag bit
When, the current rolling data includes roller speed, tension and exit thickness, and the practical roll-force is to calculate roll-force again, described
Roll-force is calculated again to be obtained according to the current rolling data by tube rolling simulation formula.
4. the method as described in claim 1, which is characterized in that the flag bit for calculating roll-force again is the second flag bit
When, the current rolling data includes actual measurement roll-force, and the practical roll-force is the actual measurement roll-force.
5. the method as described in claim 1, which is characterized in that described to be based on the practical roll-force and the current coiled strip steel
The roll-force of each rack setting described in the operation of rolling, obtains the self study coefficient current value of each rack, specifically includes:
The roll-force that the practical roll-force is set divided by each rack described in the current winding steel mill process, is learnt by oneself
Practise coefficient current value.
6. the method as described in claim 1, which is characterized in that the method also includes:
If the self study coefficient update value is not in the preset range, based on the boundary value of the preset range, control
The Multi-stand continuous rolling mill rolls next coiled strip steel.
7. method as claimed in claim 6, which is characterized in that if the self study coefficient update value is not described default
In range, then it is based on the preset range value, the Multi-stand continuous rolling mill is controlled and next coiled strip steel is rolled, it is specific to wrap
It includes:
When the self study coefficient update value is greater than the upper confinement boundary value of the preset range, using the upper confinement boundary value,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel；
When the self study coefficient update value is less than the lower limit of the preset range boundary value, using the lower limit boundary value,
The Multi-stand continuous rolling mill is controlled to roll next coiled strip steel.
8. the method as described in claim 1, which is characterized in that it is described to be based on the self study coefficient update value, described in control
Multi-stand continuous rolling mill rolls next coiled strip steel, specifically includes:
Setting roll-force when by next winding steel rolling obtains next coiled strip steel multiplied by the self study coefficient update value
Correction roll-force when rolling；
According to the correction roll-force, next coiled strip steel is rolled.
9. method as claimed in claim 6, which is characterized in that the boundary value based on the preset range, described in control
Multi-stand continuous rolling mill rolls next coiled strip steel, specifically includes:
Setting roll-force when by next winding steel rolling obtains next coiled strip steel multiplied by the boundary value of the preset range
Correction roll-force when rolling；
According to the correction roll-force, next coiled strip steel is rolled.
10. a kind of device of roll gap self study correction, is applied to multi-frame continuous rolling process characterized by comprising
Data acquisition module when for passing through the last rack of Multi-stand continuous rolling mill in current coiled strip steel, acquiring the multi-frame and connecting
The current rolling data of each rack in milling train；
Indicate calling module, for calling the flag bit for calculating roll-force again of each rack；
First obtains module, for the flag bit for calculating roll-force again based on the current rolling data and each rack,
Obtain the practical roll-force of each rack；The practical roll-force is to calculate roll-force or actual measurement roll-force again；
Second obtains module, for being set based on each rack described in the practical roll-force and the current winding steel mill process
Fixed roll-force obtains the self study coefficient current value of each rack；
Third obtains module, for whether within a preset range to judge the self study coefficient current value, if so, based on described
Self study coefficient current value and self study coefficient old value, obtained from learning coefficient updated value；The self study coefficient old value is institute
It states each rack described in current winding steel mill process and is connected with fixed self study coefficient value；
Control module, for whether within a preset range to judge the self study coefficient update value, if so, being based on the self-study
Coefficient update value is practised, the Multi-stand continuous rolling mill is controlled and next coiled strip steel is rolled.
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