CN114769325A - Control method for roll shifting of hot continuous rolling CVC working roll - Google Patents

Control method for roll shifting of hot continuous rolling CVC working roll Download PDF

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CN114769325A
CN114769325A CN202210444527.8A CN202210444527A CN114769325A CN 114769325 A CN114769325 A CN 114769325A CN 202210444527 A CN202210444527 A CN 202210444527A CN 114769325 A CN114769325 A CN 114769325A
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roll
shifting
roll shifting
bending
width
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CN114769325B (en
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闻成才
杨滋
冯涛
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Maanshan Iron and Steel Co Ltd
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Maanshan Iron and Steel Co Ltd
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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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls

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Abstract

The invention discloses a control method for roll shifting of a hot continuous rolling CVC working roll, and belongs to the technical field of strip rolling. According to the control method, the set value of the bending roll is periodically adjusted when the strip steel which is rolled in the same width in one rolling period is used, and meanwhile, a roll shifting coordination change model is given, so that the working roll shifting stroke is enlarged, the effect of uniform abrasion of the roll is achieved, and the rolling kilometers are improved; the roll bending force of each frame of the strip steel rolled in different widths is fixed, and the roll shifting executes a normal stroke so as to keep the rolling stability under the width jump. By adopting the control method, the roll shifting stroke of the working roll is increased by 30-60 mm during the same-width rolling, and the rolling kilometers of the same-width rolling are obviously increased.

Description

Control method for roll shifting of hot continuous rolling CVC working roll
Technical Field
The invention belongs to the technical field of plate strip rolling, and particularly relates to a control method for roll shifting of a hot continuous rolling working roll.
Background
The CVC rolling mill has the characteristics of strong convexity adjusting capability and rapid adjustment, but also has the problems of serious edge abrasion and short rolling kilometers in the same-width rolling process, limits the batch rolling of thin products and is not beneficial to improving the production efficiency. The working roll shifting, namely the transverse movement of the working roll, aims to ensure that the grinding of the working roll is uniform, and the variable-convexity working roll can also adjust the convexity of a roll gap through the shifting of the working roll, thereby realizing the control of the strip steel shape. When a strip is rolled, the working rolls are moved transversely by a certain distance, which is referred to as the roll shifting step length. The distance of the work rolls from the roll center line to the extreme position is called the stroke. The existing working roll generally adopts a reciprocating roll shifting method, namely, the working roll shifts to the limit position in one direction (transmission side or operation side), then shifts to the opposite direction (operation side or transmission side) until the limit position is reached, and then shifts to the opposite direction, so that the working roll reciprocates. The roll shifting of the working roll can reduce the abrasion of the roll to a certain degree, but the influence of the width of strip steel on the abrasion of the roll is not considered in the existing roll shifting mode, the length of the roll body of the working roll is not fully exerted, and the problem that the working roll is easy to abrade is not effectively solved.
Through retrieval, the application with the Chinese patent application number of 201911303850.8 discloses a method for prolonging the roll period of a roll of a 1250 hot continuous rolling finishing mill set, and the application provides that F1-F4 work rolls adopt a parabola negative convexity work roll shape and an asynchronous equal-stroke roll shifting strategy, F5-F7 adopt a double-convexity work roll shape and an asynchronous cosine roll shifting strategy, and the convexity control capability does not change along with the change of the roll shifting position. However, the application does not give the relation between the roll shifting and the roll bending, the convexity control capability mainly depends on the manual roll bending setting, and the method can be applied under the conditions of relatively single steel type and specification and small width change range of strip steel. But is not suitable for the scenes with complex varieties, large width change and high requirement on convexity control capability.
For another example, the application with chinese patent application No. 201810016072.3 discloses a method for dispersing the roll shifting position of CVC working roll, in which the roll shifting position is randomly judged and given according to the difference between the roll shifting position of the K-th and K-1-th strip steel working rolls and the limit value of roll shifting, the roll bending force is recalculated according to the roll shifting position, the roll bending force is judged to be within the limit range in the corresponding frame, and the roll shifting value and the roll bending value are finally determined. The method can enlarge the roller shifting stroke and improve the uniform abrasion of the working roller, but has the problems of large roller bending force change and incapability of compensating the convexity change caused by the roller shifting. In addition, the roll shifting position in this application adopts a random distribution algorithm, and although the roll shifting positions are dispersed in a plurality of rolls, the roll shifting position of the next piece of steel cannot be predicted, and is an uncertain position. When the roll shifting amount is at the judged limit position, the bending roll is also at the limit position, thereby losing the capability of dynamic adjustment. For rolling strip steel with different widths, the problem of unstable rolling is caused by expanding the roll shifting stroke.
Disclosure of Invention
1. Problems to be solved
In order to solve the problems, the invention provides a control method for roll shifting of a hot continuous rolling CVC working roll. By adopting the technical scheme of the invention, the problems of insufficient roll shifting stroke during same-width rolling, overlarge roll shifting stroke during non-same-width rolling and influence on specification hopping stability are effectively solved, meanwhile, enough dynamic adjusting capacity is reserved for the bending roll, the method can be applied to a finish rolling whole rack, and the roll shifting rule is controllable.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention discloses a control method for roll shifting of a hot continuous rolling CVC working roll, which comprises the following steps:
step one, configuring bending roll force change amplitude values for each finish rolling machine frame
Figure BDA0003616028510000021
Step two, presetting the number of offset strip steels for each rack configuration of finish rolling
Figure BDA0003616028510000022
Step three, changing the amplitude according to the roll bending force
Figure BDA0003616028510000023
Presetting the number of offset strips
Figure BDA0003616028510000024
Number of strip steel blocks N with variable periodcycObtaining the roll bending force variation value FB of each framechg；
Step four, constructing a model related to the roll shifting variation and the roll bending force variation value to obtain the equivalent roll shifting quantity delta S and the set roll shifting quantity S after the roll bending variationnorm；
And step five, judging whether the roll shifting condition is met, and if the roll shifting condition is met, performing roll shifting according to the model constructed in the step four.
Further, in the fifth step, the step of judging the roll shifting condition is specifically that,
s1, judging whether the subsequent slabs have continuous same-width slabs and the number of the continuous same-width slabs;
s2, if the judgment result does not exceed the preset same width threshold number
Figure BDA0003616028510000025
The circular roll shifting function is not started; if the judgment result exceeds the same width threshold number
Figure BDA0003616028510000026
The circulation roll shifting function is started and the step S3 is entered;
s3, continuously judging whether the number of the follow-up same-width slabs is larger than the residual circulation number
Figure BDA0003616028510000027
If so, then
Figure BDA0003616028510000028
And starting the function of circulating roll shifting all the time; if not, then
Figure BDA0003616028510000029
Entering the circulating roll shifting function until the function is executed
Figure BDA00036160285100000210
And jumping out of the cycle and terminating the cycle roll shifting function.
Further, the specific determination process in step S1 is to determine whether each slab is a slab with the same width after the roll changing or the calibration is finished, and accumulate the number of the slabs with the same width, and when the accumulated number reaches the number of the same-width threshold
Figure BDA00036160285100000211
And starting the circulating roll shifting function.
Further, in step S3, the number of slabs with the same width is smaller than the threshold number of slabs with the same width
Figure BDA00036160285100000212
If BFM(i)Absence or Abs (B)FM(0)－BFM(i))≥△BthdThen, then
Figure BDA00036160285100000213
Entering into a circulating roll shifting function, wherein BFM(0)For the current finished width of the strip, BFM(i)Width of finished product of lower coiled strip, Δ BthdThe same width judgment condition is adopted.
Further, the conversion relation between the roll shifting variation and the roll bending force variation in the fourth step is as follows: Δ S ═ K × FBchg，
Figure BDA00036160285100000214
Wherein K ═ A (D/D)0)B*(b/B0) c, A, B, C are coefficients, d: diameter of work roll, D0: maximum diameter of work roll, b: width of strip, B0: length of the body of the backup roll, Δ S: equivalent roll shifting amount after roll bending change, FBchg: value of change of roll bending force, Snorm: the amount of the roll shifting is set,
Figure BDA0003616028510000031
original roll shifting amount.
Further, the roll bending force variation value FBchgA sinusoidal variation is used.
Further, the roll bending force variation value
Figure BDA0003616028510000032
The roll bending force is set
Figure BDA0003616028510000033
Wherein, the first and the second end of the pipe are connected with each other,
Figure BDA0003616028510000034
for varying amplitude of bending force, Nrolled: the number of the rolled steel strips is periodically changed by the bending roll,
Figure BDA0003616028510000035
presetting the number of offset strip steels, Ncyc: the number of strip steel blocks in one period of change,
Figure BDA0003616028510000036
original roll bending force, FBnormIs to set the roll bending force.
Furthermore, the bending roll force variation amplitude of each frame
Figure BDA0003616028510000037
The method is divided according to the steel grade, thickness and width progress, wherein the bending force change amplitude of an F1 frame is 300, the bending force change amplitude of an F2 frame is 300, the bending force change amplitude of an F3 frame is 300, the bending force change amplitude of an F4 frame is 300, the bending force change amplitude of an F5 frame is 400, the bending force change amplitude of an F6 frame is 400, and the bending force change amplitude of an F7 frame is 400.
Further, the preset offset strip steel number of each frame
Figure BDA0003616028510000038
The preset values are respectively that the preset offset strip number of an F1 rack is 4, the preset offset strip number of an F2 rack is 9, the preset offset strip number of an F3 rack is 3, the preset offset strip number of an F4 rack is 7, the preset offset strip number of an F5 rack is 5, the preset offset strip number of an F6 rack is 1, and the preset offset strip number of an F7 rack is 4.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the control method for the roll shifting of the hot continuous rolling CVC working roll, the working roll is shifted through regular change of the bending roll during same-width rolling, so that the abrasion of an edge area is reduced, and the rolling kilometer number is increased; when the rolling is not performed with the same width, the working roll is already subjected to the shifting due to the specification jumping, and the bending roll is kept relatively fixed at the moment, so that the working roll is prevented from being excessively shifted;
(2) according to the control method for the roll shifting of the hot continuous rolling CVC working roll, the roll bending force changes are changed by adopting a sine curve, so that the roll bending force change directions of all the stand frames are inconsistent or asynchronous, the local wear area of each original fixed roll can be avoided, and the section shape of strip steel is smoother;
(3) according to the control method for the shifting of the working roll of the hot continuous rolling CVC, the stroke of the shifting of the working roll is increased by 30-60 mm during the same-width rolling, and the kilometer number of the same-width rolling is obviously increased.
Drawings
FIG. 1 is a flow chart of the present invention for determining roll shifting conditions;
FIG. 2 is a graph showing a roll bending force variation function according to the present invention;
FIG. 3 is a graph of a roll bending force set point in the present invention;
FIG. 4 is a graph showing the change in roll shifting of the work roll in the present invention.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The method for controlling the roll shifting of the hot continuous rolling CVC working roll comprises the following steps,
step one, configuring bending roll force change amplitude values for each finish rolling machine frame
Figure BDA0003616028510000041
Step two, presetting the number of offset strip steels for each rack of finish rolling
Figure BDA0003616028510000042
Step three, changing the amplitude according to the roller bending force
Figure BDA0003616028510000043
Presetting the number of offset strips
Figure BDA0003616028510000044
Number of strip steel blocks N in variable periodcycTo obtain the roll bending force variation value FB of each framechg；
Step four, constructing a model related to the roll shifting variation and the roll bending force variation value to obtain the equivalent roll shifting quantity delta S and the set roll shifting quantity S after the roll bending variationnorm；
And step five, judging whether the roll shifting condition is met, and if the roll shifting condition is met, performing roll shifting according to the model constructed in the step four.
The judgment flow of the fifth step is shown by referring to the figure 1, after roll changing or calibration is finished, whether batch of strip steel with the same width exists in a rolling plan or not is checked for each piece of steel, if the quantity of the strip steel with the same width exceeds a certain quantity, a roll bending-roll shifting change function is executed, and roll bending force and roll shifting quantity are output; and after the last piece of steel in the current same-width period is executed, the normal roll shifting is carried out. And when the number of the new strip steel with the same width meeting the conditions is detected, the roll bending-roll shifting change function is continuously executed. Specifically, the method comprises the following steps:
s1, judging whether the subsequent slabs have continuous same-width slabs and the number of the continuous same-width slabs; specifically, after the roll replacement or calibration is finished, judging whether each plate blank is the same-width plate blank or not, and accumulating the number of the same-width plate blanks;
s2, if the number of the follow-up continuous same-width slabs does not exceed the preset same-width threshold number
Figure BDA0003616028510000045
The circulating roll shifting function is not started; if the number of the subsequent continuous same-width slabs exceeds the same-width threshold number
Figure BDA0003616028510000046
The circular roll shifting function is started;
s3, judging whether the quantity of the follow-up same-width slabs is larger than the residual circulation quantity
Figure BDA0003616028510000047
If so, then
Figure BDA0003616028510000048
And starting the function of circulating roll shifting all the time; if not, then
Figure BDA0003616028510000049
Entering into the circulating roll shifting function until the roll shifting function is executed
Figure BDA00036160285100000410
Figure BDA00036160285100000411
And jumping out of the cycle and terminating the cycle roll shifting function.
Wherein the number of slabs with the same width is less than the number of thresholds with the same width
Figure BDA00036160285100000412
If BFM(i)Absence or Abs (B)FM(0)－BFM(i))≥△BthdThen, then
Figure BDA00036160285100000413
Entering a circulating roll shifting function, BFM(0)Width of the current finished strip, BFM(i)For width of finished product of lower coil steel,. DELTA.BthdThe same width judgment condition is adopted.
In this embodiment, the amplitude of the change in the roll bending force of each frame is set to be equal to or smaller than the amplitude of the change in the roll bending force of each frame
Figure BDA00036160285100000414
The data are stored in a database table, are divided according to the steel grade, thickness and width progress, and can also be synchronized with the database on a human-computer interface of an HMI (human machine interface) for real-time modification. See Table 1 for details
Table 1: roll bending force variation amplitude meter
Figure BDA0003616028510000051
In order to make the roll bending force variation and the variation direction of each frame inconsistent, the local wear area of each original fixed roll can be avoided, the section shape of the strip steel is smoother, and the roll bending force variation adopts sinusoidal curve variation. Meanwhile, each rack is provided with an offset preset table, and the offset preset table can be synchronized with the database and modified in real time in the database and a human-computer interface of the HMI (human machine interface), specifically shown in table 2.
Table 2: sine variation offset preset table
Figure BDA0003616028510000052
The roll bending force variation amplitude, roll bending variation offset number and the number of strip steel blocks in the variation period are used as sinusoidal function parameters to obtain the roll bending force variation value of each frame, a sinusoidal function related to the roll bending force variation is constructed,
Figure BDA0003616028510000053
Figure BDA0003616028510000054
wherein, Nrolled: the number of the rolled steel strips is periodically changed by the bending roll,
Figure BDA0003616028510000055
presetting the number of offset strip steels, Ncyc: number of strip steel blocks, FB, in one cycle of variationchg: the value of the change in the roll bending force,
Figure BDA0003616028510000056
original roll bending force, FBnormIs to set the roll bending force.
Determining a conversion relation between roll bending force and roll shifting: Δ S ═ K × FBchg，
Figure BDA0003616028510000057
Wherein: k ═ a (D/D)0)B*(b/B0)CA, B, C are all coefficients, preferably a-0.034025, B-0.617852, C-1.338651, d: diameter of work roll, D0: maximum work roll diameter, b: width of strip, B0: roll length of the support roll, Δ S: equivalent roll shifting quantity after roll bending change, Snorm: the amount of the roll shifting is set,
Figure BDA0003616028510000058
original roll shifting amount.
According to the control method for roll shifting of the hot continuous rolling CVC working roll, when the plate blank reaches the furnace end, each plate blank triggers a calculation program of the circular roll shifting function, and the program judges whether the subsequent plate blank has continuous same-width plate blanks or not and the quantity of the continuous same-width plate blanks. If the number of the subsequent continuous same-width slabs does not exceed the same-width threshold number
Figure BDA0003616028510000059
The circular roll shifting function is not started; if the number of the subsequent continuous same-width slabs exceeds the same-width threshold number
Figure BDA00036160285100000510
The cyclic roll shifting function is initiated. The plate blank with the roller shifting function started shows that the number of the subsequent plate blanks with the same width is larger, so that the residual circulation number is set
Figure BDA00036160285100000511
Judging if the number of the follow-up slabs with the same width is more than that
Figure BDA00036160285100000512
In a way that
Figure BDA00036160285100000513
And starting the circulating roll shifting function all the time; if the number of subsequent slabs of the same width is initially less than
Figure BDA00036160285100000514
To then
Figure BDA00036160285100000515
And enters a roll shifting function of a starting cycle until the roll shifting function is executed
Figure BDA00036160285100000516
And jumping out of the cycle, and terminating the roll shifting function of the starting cycle.
It should be noted that each slab arriving at the furnace end triggers the calculation procedure of the circular roll shifting function and judges the condition that the subsequent slabs are continuous and the same width. Each slab arriving at the end of the furnace is the current block, and it is irrelevant to the previous slabs that have been discharged, and only the number of the subsequent slabs of the same width are searched in the process.
The existing CVC roller type working roller for hot continuous rolling provides larger and stable plate shape control capability through the working roller movement, and can quickly reach the target plate shape in the specification jumping process. But in the same-width rolling process, the specifications are the same, the effective convexity of the strip steel is fixed, and the working rolls lack the target power source for shifting, so the roll shifting position is relatively fixed. The embodiment provides a control method for roll shifting of a hot continuous rolling CVC working roll, wherein a set value of a bending roll is periodically adjusted when strip steel which is rolled in the same width in a rolling period is used, a roll shifting coordinated change model is given, the working roll shifting stroke is expanded, the effect of uniform abrasion of the roll is achieved, and the rolling kilometers are improved; the roll bending force of the strip steel rolled in different widths is fixed, and the roll shifting performs a normal stroke to keep the rolling stability under the width jump. By adopting the control method of the embodiment, the roll shifting stroke of the working roll is increased by 30-60 mm during the same-width rolling, and the number of kilometers of the same-width rolling is obviously increased.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (9)

1. A control method for roll shifting of a hot continuous rolling CVC working roll is characterized by comprising the following steps: comprises the following steps of (a) preparing a solution,
step one, configuring bending roll force variation amplitude values for each frame of finish rolling
Figure FDA0003616028500000011
Step two, presetting the number of offset strip steels for each rack of finish rolling
Figure FDA0003616028500000012
Step three, changing the amplitude according to the roll bending force
Figure FDA0003616028500000013
Presetting the number of offset strips
Figure FDA0003616028500000014
Number of strip steel blocks N with variable periodcycObtaining the roll bending force variation value FB of each framechg；
Step four, constructing a model related to the roll shifting variation and the roll bending force variation value to obtain the equivalent roll shifting quantity delta S and the set roll shifting quantity S after the roll bending variationnorm；
And step five, judging whether the roll shifting condition is met, and if the roll shifting condition is met, performing roll shifting according to the model constructed in the step four.
2. The control method for roll shifting of the hot continuous rolling CVC working roll according to claim 1, characterized in that: in the fifth step, the specific steps for judging the roll shifting condition are,
s1, judging whether the subsequent slabs have continuous same-width slabs and the number of the continuous same-width slabs;
s2, if the judgment result does not exceed the preset same width threshold number
Figure FDA0003616028500000015
The circular roll shifting function is not started; if the judgment result exceeds the same width threshold number
Figure FDA0003616028500000016
The circulation roll shifting function is started and the process goes to step S3;
s3, continuously judging whether the quantity of the follow-up same-width slabs is larger than the residual circulation quantity
Figure FDA0003616028500000017
If so, then
Figure FDA0003616028500000018
And starting the circulating roll shifting function all the time; if not, then
Figure FDA0003616028500000019
Entering the circulating roll shifting function until the function is executed
Figure FDA00036160285000000110
And jumping out of the cycle and terminating the cycle roll shifting function.
3. The control method for roll shifting of the hot continuous rolling CVC working roll according to claim 2, characterized in that: the specific determination process in step S1 is to determine whether each slab is a slab with the same width after the roll replacement or calibration is finished, and to accumulate the number of slabs with the same width, and when the accumulated number reaches the threshold number with the same width
Figure FDA00036160285000000111
And then, starting the circulating roll shifting function.
4. The control method for roll shifting of the hot continuous rolling CVC working roll according to claim 3, characterized in that: in step S3, the number of slabs with the same width is less than the number of thresholds with the same width
Figure FDA00036160285000000112
If BFM(i)Absence or Abs (B)FM(0)－BFM(i))≥△BthdThen, then
Figure FDA00036160285000000113
Entering a circulating roll shifting function, wherein BFM(0)Width of the current finished strip, BFM(i)Width of finished product of lower coiled strip, Δ BthdThe same width judgment condition is adopted.
5. The method for controlling roll shifting of the hot continuous rolling CVC working roll according to any one of claims 1 to 4, characterized in that the conversion relation between the roll shifting variable quantity and the roll bending force variable quantity in the fourth step is as follows: Δ S ═ K × FBchg，
Figure FDA00036160285000000114
Wherein K ═ a (D/D)0)B*(b/B0)CA, B, C are coefficients, d: diameter of work roll, D0: maximum work roll diameter, b: width of strip, B0: length of the body of the backup roll, Δ S: equivalent roll shifting amount after roll bending change, FBchg: value of change of roll bending force, Snorm: the amount of the roll shifting is set,
Figure FDA0003616028500000021
original roll shifting amount.
6. The method for controlling roll shifting of a hot continuous rolling CVC working roll according to claim 5, characterized in that the roll bending force variation value FBchgA sinusoidal variation is used.
7. The method for controlling roll shifting of hot continuous rolling CVC working roll according to claim 6, characterized in that roll bending force variation value
Figure FDA0003616028500000022
The roll bending force is set
Figure FDA0003616028500000023
Wherein the content of the first and second substances,
Figure FDA0003616028500000024
amplitude of change of roll bending force, Nrolled: the number of the rolled steel strips is periodically changed by the bending roll,
Figure FDA0003616028500000025
presetting the number of offset strips, Ncyc: the number of strip steel blocks in one period of change,
Figure FDA0003616028500000026
original roll force, FBnormIs to set the roll bending force.
8. The method as claimed in claim 7, wherein the roll bending force variation amplitude of each stand is set according to the roll shifting control method of the hot continuous rolling CVC working roll
Figure FDA0003616028500000027
The method is divided according to the steel grade, thickness and width progress, wherein the bending roll force change amplitude of an F1 frame is 300, the bending roll force change amplitude of an F2 frame is 300, the bending roll force change amplitude of an F3 frame is 300, the bending roll force change amplitude of an F4 frame is 300, the bending roll force change amplitude of an F5 frame is 400, the bending roll force change amplitude of an F6 frame is 400, and the bending roll force change amplitude of an F7 frame is 400.
9. The method for controlling roll shifting of a hot continuous rolling CVC working roll according to claim 8, characterized in that: predetermined offset strip number of each stand
Figure FDA0003616028500000028
The preset values are respectively that the preset offset strip number of an F1 rack is 4, the preset offset strip number of an F2 rack is 9, the preset offset strip number of an F3 rack is 3, the preset offset strip number of an F4 rack is 7, the preset offset strip number of an F5 rack is 5, the preset offset strip number of an F6 rack is 1, and the preset offset strip number of an F7 rack is 4.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115591948A (en) * 2022-10-13 2023-01-13 福建鼎盛钢铁有限公司（Cn） Method for improving ESP strip steel section size control precision

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5655397A (en) * 1994-07-08 1997-08-12 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for rolling a plate and rolling mill both using roll shift and roll bend and roll for use therefor
US5697244A (en) * 1994-03-18 1997-12-16 Sms Schloemann-Siemag Aktiengesellschaft Method and arrangement for rolling strip
JP2000079409A (en) * 1998-09-02 2000-03-21 Sumitomo Metal Ind Ltd Method for controlling shape of sheet using multiple rolling mill
US20080163659A1 (en) * 2005-03-25 2008-07-10 Angang Steel Company Limited Roll Profile for Both Shape Control and Free Ruled Rolling
CN102310089A (en) * 2011-09-21 2012-01-11 首钢总公司 Method for eliminating local wear of working roller of CVC (continually variable crown) mill
CN102581026A (en) * 2012-01-18 2012-07-18 中冶南方工程技术有限公司 Control method for transverse integrative optimization of shape of cold rolled steel strip
CN102861771A (en) * 2012-09-29 2013-01-09 鞍钢股份有限公司 Differential roll bending method of working roll and used for controlling nonsymmetrical flatness defects
CN106140829A (en) * 2015-03-27 2016-11-23 上海梅山钢铁股份有限公司 Produce the method for local high spot based on the hot-strip that prevents of CVC roller shape
CN108213087A (en) * 2018-01-08 2018-06-29 东北大学 A kind of method for disperseing CVC working roll roll shiftings position
CN108273853A (en) * 2018-01-19 2018-07-13 山东钢铁集团日照有限公司 A kind of continuous hot-rolling mill working roll intelligence roller shifting method
CN109759453A (en) * 2019-03-05 2019-05-17 马鞍山钢铁股份有限公司 A kind of board-shape control method of Cold tandem mill strip steel width dynamic variable specification

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5697244A (en) * 1994-03-18 1997-12-16 Sms Schloemann-Siemag Aktiengesellschaft Method and arrangement for rolling strip
US5655397A (en) * 1994-07-08 1997-08-12 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for rolling a plate and rolling mill both using roll shift and roll bend and roll for use therefor
JP2000079409A (en) * 1998-09-02 2000-03-21 Sumitomo Metal Ind Ltd Method for controlling shape of sheet using multiple rolling mill
US20080163659A1 (en) * 2005-03-25 2008-07-10 Angang Steel Company Limited Roll Profile for Both Shape Control and Free Ruled Rolling
CN102310089A (en) * 2011-09-21 2012-01-11 首钢总公司 Method for eliminating local wear of working roller of CVC (continually variable crown) mill
CN102581026A (en) * 2012-01-18 2012-07-18 中冶南方工程技术有限公司 Control method for transverse integrative optimization of shape of cold rolled steel strip
CN102861771A (en) * 2012-09-29 2013-01-09 鞍钢股份有限公司 Differential roll bending method of working roll and used for controlling nonsymmetrical flatness defects
CN106140829A (en) * 2015-03-27 2016-11-23 上海梅山钢铁股份有限公司 Produce the method for local high spot based on the hot-strip that prevents of CVC roller shape
CN108213087A (en) * 2018-01-08 2018-06-29 东北大学 A kind of method for disperseing CVC working roll roll shiftings position
CN108273853A (en) * 2018-01-19 2018-07-13 山东钢铁集团日照有限公司 A kind of continuous hot-rolling mill working roll intelligence roller shifting method
CN109759453A (en) * 2019-03-05 2019-05-17 马鞍山钢铁股份有限公司 A kind of board-shape control method of Cold tandem mill strip steel width dynamic variable specification

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115591948A (en) * 2022-10-13 2023-01-13 福建鼎盛钢铁有限公司（Cn） Method for improving ESP strip steel section size control precision
CN115591948B (en) * 2022-10-13 2024-05-14 福建鼎盛钢铁有限公司 Method for improving control precision of section size of ESP strip steel

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