CN106984652A - The method that finishing stand sideslip is controlled according to breakdown bar camber - Google Patents
The method that finishing stand sideslip is controlled according to breakdown bar camber Download PDFInfo
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- CN106984652A CN106984652A CN201610041263.6A CN201610041263A CN106984652A CN 106984652 A CN106984652 A CN 106984652A CN 201610041263 A CN201610041263 A CN 201610041263A CN 106984652 A CN106984652 A CN 106984652A
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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
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
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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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- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a kind of method that finishing stand sideslip is controlled according to breakdown bar camber, including step：(1) control range is selected；(2) camber C values are determined；(3) the unilateral adjustment amount of roll gap Δ Gap of the i-th frame is obtained according to following modelsi：In formula：ΔGapiFor the unilateral adjustment amount of roll gap of the i-th frame, unit is mm；C represents strip camber C values (mm)；KmMill modulus is represented, its unit is KN/mm；KsPlastic deformation coefficient is represented, its unit is KN/mm；hiThe exit thickness of the i-th frame is represented, its unit is mm；h0Workpiece thickness is represented, its unit is mm；W represents strip finished width, and its unit is mm；KiThe gain coefficient of the i-th frame is represented, it is dimensionless；(4) by the unilateral adjustment amount of roll gap Δ Gap of the i-th frame of above-mentioned determinationiPress control system is transferred to be performed.The method of the present invention can eliminate breakdown bar camber to be influenceed on the sideslip of finish rolling.
Description
Technical field
The present invention relates to a kind of method for controlling rolling-mill housing sideslip, more particularly to a kind of control finishing stand
The method of sideslip.
Background technology
Hot-strip is important steel products, and hot continuous rolling is one of major way of hot-strip production.
Fig. 1 illustrates a kind of hot continuous rolling production line of hot-strip.As shown in figure 1, the hot continuous rolling production line bag
Include heating furnace 1, roughing mill 2, finishing mill 3, cooling facility for laminar flow 4 and coiling machine 5, wherein finish rolling
Machine 3 is included in some finishing stands, the hot continuous rolling production line, and finishing mill 3 includes finishing stand F1-F7.
The production technology of the hot continuous rolling production line is：The heated heating of plate blank of stove 1 of blank first, secondly through high pressure
Water dephosphorization, after carry out roughing through roughing mill 2, then cutting head cutting tail, then through the finish rolling of finishing mill 3, it
Section cooling is carried out by cooling facility for laminar flow 4, is finally carried out batching acquisition hot-strip by coiling machine 5
Finished product.
Slab after roughing is also referred to as middle base.Actual hot-strip production in, due to non-uniform temperature,
Often there is as shown in Figure 2 one in the reasons such as roughing both sides roll gap deviation, breaking-down roll skidding, middle base
Determine camber (i.e. the bending of shape such as reaping hook), follow-up finish rolling rolling stability is adversely affected, hold
It is easily caused finish rolling and occurs rolling brokenly the even accident such as sideslip steel scrap.But control hand effective to this shortage at present
Section, operative employee needs in time to be intervened according to actual rolling situation in production, is not known with larger
Property and error.With increasing, the hot rolling of high-strength hot-rolled strip product and thin, hard specification product
The problems such as rolling camber, sideslip, becomes increasingly conspicuous, as one of hot rolling production focal issue.
Camber problem comes from Asymmetric Rolling, i.e. inlet of rolling mill and outlet slab ratio wedge shape is unequal.
Cause the factor of Asymmetric Rolling numerous, mainly including rolled piece, milling train and the aspect of rolling centering three.Roll
Factor in terms of part includes camber, wedge shape degree and the temperature homogeneity of slab supplied materials.For slab supplied materials
Temperature homogeneity caused by Asymmetric Rolling problem, patent JP62197209A, JP06007818A is public
A kind of camber based on temperature detection and camber control method have been opened, has been by installing temperature in inlet of rolling mill
Detection means is spent, measurement slab transverse temperature is poor, thus obtains milling train both sides rolling force deviation and roll gap is inclined
Difference, and milling train both sides roll gap is compensated, so as to realize camber and camber control.But this method pair
Sideslip and camber are uncontrollable caused by the camber and wedge shape degree of slab supplied materials.Patent
JP62054511A discloses a kind of camber control method of view-based access control model detection, i.e., exported by milling train
High speed camera is installed, detection strip position, and sideslip information transmission to down-pressing system of rolling mill in real time is moved
State adjustment milling train both sides pressure, so as to realize camber and camber control.This method can solve various factors
Caused sideslip and camber problem, but need to be mounted so that the detection of slab position and automatic camber control system
System, implements investment greatly, the cycle is long.
The content of the invention
It is an object of the invention to provide a kind of side according to breakdown bar camber control finishing stand sideslip
Method, this method can be solved because base has camber and the problem of influence finish rolling rolling stability in the middle of roughing,
Sideslip steel scrap is reduced, hot-strip product strip shape quality is improved.
To achieve these goals, the present invention proposes a kind of according to breakdown bar camber control finishing stand
The method of sideslip, including step：
(1) control range is selected：The control range is head of the length direction away from middle base along middle base
The distance at portion end is X control section；
(2) camber C values are determined：Using middle base in its longitudinal direction away from head end distance as X's
Position to intermediate value C1 on the basis of, the reality of each point in the control range is subtracted to intermediate value C2
C1, obtains the camber C values of each point, C unit is mm；
(3) the unilateral adjustment amount of roll gap Δ Gap of the i-th frame is obtained according to following modelsi：
In formula：ΔGapiFor the unilateral adjustment amount of roll gap of the i-th frame, unit is mm；C represents strip sickle
The curved C values (mm) of knife；KmMill modulus is represented, its unit is KN/mm；KsRepresent plasticity
Deformation coefficient, its unit is KN/mm；hiThe exit thickness of the i-th frame is represented, its unit is mm；h0
Workpiece thickness is represented, its unit is mm；W represents strip finished width, and its unit is mm；KiTable
Show the gain coefficient of the i-th frame, it is dimensionless；
(4) by the unilateral adjustment amount of roll gap Δ Gap of the i-th frame of above-mentioned determinationiIt is transferred to press control system
System is performed.
The present general inventive concept allows for breakdown bar camber to be influenceed on the sideslip of finish rolling, using finish rolling
It is preceding that breakdown bar camber centering data are detected, and the breakdown bar camber pair obtained based on the detection
Middle data calculate the unilateral adjustment amount of roll gap of planishing roll in each finishing stand, then pass through press control system
The method for carrying out roll gap adjustment according to the unilateral adjustment amount of roll gap, realizes compensative level, to eliminate middle base
Camber influences on the sideslip of finish rolling, so as to solve because roughing centre base has camber and influences finish rolling
The problem of rolling stability, sideslip steel scrap is reduced, improve hot-strip product strip shape quality.
In the method that finishing stand sideslip is controlled according to breakdown bar camber of the present invention, step (1) is selected
The two ends camber that the reason for control range is that typically in middle base is obvious, the conduct in step (2)
The described of centering data is generally obtained to intermediate value C1 and C2 by the detection of width instrument, the mould in step (3)
Type is used for the unilateral adjustment amount of roll gap Δ Gap for calculating the planishing roll of the i-th frame in finishing standi, step (4)
In press control system be used for perform roll gap adjustment.
The present invention's controls the method for finishing stand sideslip can be by Industry Control meter according to breakdown bar camber
Calculation machine coordinates the press control system of width instrument and finishing stand to realize, wherein width instrument is used to detect centre
Base camber centering data, industrial control computer is for the model in construction step (3), related data
Calculating and transmission and Row control, the press control system of finishing stand is used to perform roll gap adjustment.
Further, in method of the present invention, also there is step (2a) after the step (2)：
The amplitude in the positive/negative direction of camber C values of each point and the C value amplitude thresholds of a setting are compared,
If the amplitude in the positive/negative direction of C values is less than or equal to the C values amplitude thresholds, step (3) is carried out,
If the amplitude in the positive/negative direction of C values is more than the C values amplitude thresholds, by the C values amplitude thresholds
As the amplitude in the positive/negative direction of C values to carry out step (3).Wherein, the C values amplitude thresholds according to
Experience is chosen.
Further, in method of the present invention, also there is step (3a) after the step (3)：
By the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiThe amplitude in positive/negative direction and the regulated quantity amplitude of a setting
Threshold value is compared, if the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiThe amplitude in positive/negative direction be less than etc.
In the regulated quantity amplitude thresholds, then step (4) is carried out, if the unilateral adjustment amount of roll gap of the i-th frame
ΔGapiThe amplitude in positive/negative direction is more than the regulated quantity amplitude thresholds, then by the regulated quantity amplitude thresholds
It is used as the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiThe amplitude in positive/negative direction is to carry out step (4).Wherein,
The regulated quantity amplitude thresholds are empirically chosen.
Further, in method of the present invention or above-mentioned, in the step (1), X's takes
Value scope is 0.5-30m.
Further, in the above-mentioned methods, X span is 5-15m.
In such scheme, the span of the X should at least include obvious breakdown bar camber, from
And reach the effect for preferably eliminating breakdown bar camber to the sideslip influence of finish rolling.
Further, in method of the present invention or above-mentioned, for F1-F4 frames, Km's
Span is 6000-6800KN/mm；For F5-F7 frames, KmSpan be
5600-6400KN/mm。
Further, in method of the present invention or above-mentioned, KsSpan be
1000-40000KN/mm。
Further, in method of the present invention or above-mentioned, hiSpan be 1.2-30mm.
In such scheme, Km、KsAnd hiFor the parameter of finishing stand, in some embodiments, essence
Mill stand includes seven frames of F1-F7.
Further, in method of the present invention or above-mentioned, h0Span 30-60mm.
Further, in method of the present invention or above-mentioned, W span
700-1800mm。
The method of the present invention that finishing stand sideslip is controlled according to breakdown bar camber, itself and existing skill
Art, which is compared, has advantages below：
(1) sideslip and camber caused by the camber and wedge shape degree of slab supplied materials are can control, is effectively subtracted
Lack finish rolling sideslip, roll brokenly whipping and steel scrap, improve hot rolling stability；
(2) due to the inventive method to the detection of middle base and to roll gap adjustment control be not synchronization implementation
, therefore, the cost of detection and control device not high to the synchronism and requirement of real-time for detecting and controlling
It is cheap；
(3) even if high synchronism is also impossible to Complete Synchronization again, control effect is unable to reach most preferably, and
The detection of the inventive method and the asynchronous of control ensure that optimal control effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the hot continuous rolling production line of hot-strip.
Fig. 2 is camber schematic diagram.
Fig. 3 controls the method for finishing stand sideslip in one kind to be of the present invention according to breakdown bar camber
The control system schematic diagram applied under embodiment.
Fig. 4 controls the method for finishing stand sideslip in one kind to be of the present invention according to breakdown bar camber
Schematic flow sheet under embodiment.
Fig. 5 controls the method for finishing stand sideslip in one kind to be of the present invention according to breakdown bar camber
Middle base centering data and curves under embodiment.
Embodiment
Below in conjunction with Figure of description and specific embodiment to of the present invention according to middle base reaping hook
The method of curved control finishing stand sideslip makes further explanation explanation, but the explanation not structure
The improper restriction of paired technical scheme.
Embodiment A1-A2
Fig. 3 illustrates the embodiment A1-A2 method that finishing stand sideslip is controlled according to breakdown bar camber
The control system applied, Fig. 4 illustrate embodiment A1-A2 according to breakdown bar camber control finish rolling
The flow of the method for frame sideslip.
As shown in figure 3, the embodiment A1-A2 side that finishing stand sideslip is controlled according to breakdown bar camber
The control system that method is applied includes width instrument 7 and industrial control computer 8, by industrial control computer 8
Width instrument 7 and finishing stand F1-F7 press control system is coordinated to realize.
As shown in figure 4, with reference to Fig. 3 is referred to, embodiment A1-A2's controls essence according to breakdown bar camber
The method of mill stand sideslip is comprised the following steps that：
(1) base centering data processing (selected control range) in the middle of：Middle base 6 is detected by width instrument 7
Breakdown bar camber centering data, 8 pairs of the industrial control computer breakdown bar camber centering data enter
Row processing, control range is selected according to rule set in advance, and the control range is the length along middle base
The distance of head end of the direction away from middle base is X control section；Above-mentioned rule set in advance should cause
X span includes obvious breakdown bar camber, and the rule set in advance can be based on centering
The size of data absolute value judges, or empirically sets；The present embodiment X spans are selected
5-15m；
(2) camber C values are determined：Industrial control computer 8 with middle base 6 in its longitudinal direction
Away from head end distance for X position to intermediate value C1 on the basis of, by the reality of each point in control range
C1 is subtracted to intermediate value C2, the camber C values of each point are obtained, C unit is mm；
(2a) C value amplitude limits：Industrial control computer 8 is by the width in the positive/negative direction of camber C values of each point
Value and the C value amplitude thresholds of a setting are compared, if the amplitude in the positive/negative direction of C values is less than or equal to
The C value amplitude thresholds, then carry out step (3), if the amplitude in the positive/negative direction of C values is more than the C values
Amplitude thresholds, then using the C values amplitude thresholds as the amplitude in the positive/negative direction of C values to carry out step (3)；
Wherein, C values amplitude thresholds are empirically chosen；
(3) finishing stand F1-F7 leveling corrections are calculated：The executable program of industrial control computer 8
In have and meet the program modules of following models, industrial control computer 8 obtains essence by the program module
The unilateral adjustment amount of roll gap Δ Gap of i-th frame (i.e. finishing stand Fi) in mill stand F1-F7i：
In formula：ΔGapiFor the unilateral adjustment amount of roll gap of the i-th frame, unit is mm；C represents strip sickle
The curved C values of knife, its unit is mm (span -100~100)；KmMill modulus is represented, its
Unit is KN/mm (for F1-F4 frames, KmSpan be 6000-6800KN/mm；It is right
In F5-F7 frames, KmSpan be 5600-6400KN/mm)；KsPlastic deformation coefficient is represented,
Its unit is KN/mm (span is 1000-40000KN/mm)；hiRepresent the outlet of the i-th frame
Thickness, its unit is mm (span is 1.2-30mm)；h0Represent workpiece thickness, its unit
For mm (span 30-60mm)；W represents strip finished width, and its unit is mm (value models
Enclose 700-1800mm)；KiThe gain coefficient of the i-th frame is represented, it is that (span is less than dimensionless
1)；
(3a) regulated quantity amplitude limit：Industrial control computer 8 is by the unilateral adjustment amount of roll gap Δ Gap of the i-th framei
The amplitude in positive/negative direction and the regulated quantity amplitude thresholds of a setting are compared, if the one side of the i-th frame
Adjustment amount of roll gap Δ GapiThe amplitude in positive/negative direction is less than or equal to the regulated quantity amplitude thresholds, then carries out step
(4), if the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiThe amplitude in positive/negative direction is more than the regulated quantity width
Be worth threshold value, then using the regulated quantity amplitude thresholds as the i-th frame unilateral adjustment amount of roll gap Δ GapiPositive/negative side
To amplitude to carry out step (4)；Wherein, the regulated quantity amplitude thresholds are empirically chosen；
(4) finishing stand F1-F7 leveling amendments are performed：Industrial control computer 8 is by the of above-mentioned determination
The unilateral adjustment amount of roll gap Δ Gap of i framesiThe press control system of finishing stand is transferred in the middle base of distance
The distance of 6 head end is the execution of the progress corresponding roll gap adjustments of finishing stand F1-F7 in the range of X.
Table 1 lists the embodiment A1 method according to breakdown bar camber control finishing stand sideslip
Specific process parameter.In embodiment A1, the centering data detected by width instrument are as shown in figure 5, horizontal seat
The length direction of middle base is designated as, at the head end 2m away from middle base 6 is C2=61.2mm to intermediate value,
At 10 meters of the head end away from middle base 6 is C1=12.5mm to intermediate value, and the C values calculated are
48.7mm。
Table 1.
Table 2 lists the embodiment A2 method according to breakdown bar camber control finishing stand sideslip
Specific process parameter.In embodiment A2, in the centering data detected by width instrument, away from middle base 6
At head end 1m is the centering at C2=53.6mm, 10 meters of the head end away from middle base 6 to intermediate value
It is worth for C1=-6.7mm, the C values calculated are 60.3mm.
Table 2.
Above-described embodiment A1 and A2 only give the calculated case of a C value, for according to step (2)
The different C values that (2a) is obtained, only need to substitute into step (3) can calculate the machine of corresponding C values
Frame F1-F7 unilateral adjustment amount of roll gap Δ Gapi.Embodiment A1 and A2 have received good in actual applications
Good effect, can reduce finish rolling sideslip, roll brokenly whipping and steel scrap, improve hot rolling stability.
It should be noted that listed above is only specific embodiment of the invention, it is clear that the present invention is not limited
In above example, there is the similar change of many therewith.If those skilled in the art is from the present invention
All deformations that disclosure is directly exported or associated, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of method that finishing stand sideslip is controlled according to breakdown bar camber, it is characterised in that including step：
(1) control range is selected：The control range is the length direction along middle base away from middle base
Head end distance be X control section；
(2) camber C values are determined：Using middle base in its longitudinal direction away from head end distance as X
Position to intermediate value C1 on the basis of, by the actual to intermediate value C2 of each point in the control range
C1 is subtracted, the camber C values of each point are obtained, C unit is mm；
(3) the unilateral adjustment amount of roll gap Δ Gap of the i-th frame is obtained according to following modelsi：
In formula：ΔGapiFor the unilateral adjustment amount of roll gap of the i-th frame, unit is mm；C represents strip
Camber C values (mm)；KmMill modulus is represented, its unit is KN/mm；KsTable
Show plastic deformation coefficient, its unit is KN/mm；hiThe exit thickness of the i-th frame is represented, its list
Position is mm；h0Workpiece thickness is represented, its unit is mm；W represents strip finished width,
Its unit is mm；KiThe gain coefficient of the i-th frame is represented, it is dimensionless；
(4) by the unilateral adjustment amount of roll gap Δ Gap of the i-th frame of above-mentioned determinationiIt is transferred to press control
System is performed.
2. the method as described in claim 1, it is characterised in that also there is step after the step (2)
(2a)：By the amplitude in the positive/negative direction of camber C values of each point and the C value amplitude thresholds of a setting
It is compared, if the amplitude in the positive/negative direction of C values is less than or equal to the C values amplitude thresholds, enters
Row step (3), if the amplitude in the positive/negative direction of C values is more than the C values amplitude thresholds, by institute
C values amplitude thresholds are stated as the amplitude in the positive/negative direction of C values to carry out step (3).
3. method as claimed in claim 1 or 2, it is characterised in that also have after the step (3)
Step (3a)：By the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiThe amplitude in positive/negative direction and a setting
Regulated quantity amplitude thresholds be compared, if the unilateral adjustment amount of roll gap Δ Gap of the i-th frameiIt is positive/negative
The amplitude in direction is less than or equal to the regulated quantity amplitude thresholds, then carries out step (4), if i-th
The unilateral adjustment amount of roll gap Δ Gap of frameiThe amplitude in positive/negative direction is more than the regulated quantity amplitude thresholds,
Then using the regulated quantity amplitude thresholds as the i-th frame unilateral adjustment amount of roll gap Δ GapiPositive/negative direction
Amplitude to carry out step (4).
4. the method as described in claim 1, it is characterised in that in the step (1), X value model
Enclose for 0.5-30m.
5. method as claimed in claim 4, it is characterised in that X span is 5-15m.
6. the method as described in claim 1, it is characterised in that for F1-F4 frames, KmValue model
Enclose for 6000-6800KN/mm；For F5-F7 frames, KmSpan be
5600-6400KN/mm。
7. the method as described in claim 1, it is characterised in that KsSpan be
1000-40000KN/mm。
8. the method as described in claim 1, it is characterised in that hiSpan be 1.2-30mm.
9. the method as described in claim 1, it is characterised in that h0Span 30-60mm.
10. the method as described in claim 1, it is characterised in that W span 700-1800mm.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570241A (en) * | 2017-09-29 | 2019-04-05 | 宝山钢铁股份有限公司 | A kind of wedge-shaped control system and method with sideslip protection |
| CN111014308A (en) * | 2019-12-09 | 2020-04-17 | 北京科技大学设计研究院有限公司 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
| CN111036690A (en) * | 2019-11-14 | 2020-04-21 | 北京科技大学设计研究院有限公司 | Method for controlling deflection of rough rolling intermediate billet |
| CN111702007A (en) * | 2020-06-24 | 2020-09-25 | 河北工程大学 | Hot rolling finishing mill group strip steel head deviation control method |
| CN111842507A (en) * | 2020-07-10 | 2020-10-30 | 宝钢湛江钢铁有限公司 | Method for realizing deviation control of center line of plate blank |
| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
| CN112742879A (en) * | 2021-01-04 | 2021-05-04 | 南京钢铁股份有限公司 | Control method for camber of medium plate |
| CN112958633A (en) * | 2021-01-28 | 2021-06-15 | 北京科技大学设计研究院有限公司 | Incoming material camber-based fine rolling strip steel head pre-swing leveling control method |
| CN113680829A (en) * | 2021-08-20 | 2021-11-23 | 鞍钢集团自动化有限公司 | Novel sickle elbow part pre-control method |
| CN113953332A (en) * | 2020-07-21 | 2022-01-21 | 宝山钢铁股份有限公司 | Control method for strip steel single-side wave shape between hot continuous rolling mill frames |
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| CN109570241A (en) * | 2017-09-29 | 2019-04-05 | 宝山钢铁股份有限公司 | A kind of wedge-shaped control system and method with sideslip protection |
| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
| CN111036690A (en) * | 2019-11-14 | 2020-04-21 | 北京科技大学设计研究院有限公司 | Method for controlling deflection of rough rolling intermediate billet |
| CN111014308A (en) * | 2019-12-09 | 2020-04-17 | 北京科技大学设计研究院有限公司 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
| CN111014308B (en) * | 2019-12-09 | 2021-08-03 | 北京科技大学设计研究院有限公司 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
| CN111702007A (en) * | 2020-06-24 | 2020-09-25 | 河北工程大学 | Hot rolling finishing mill group strip steel head deviation control method |
| CN111842507A (en) * | 2020-07-10 | 2020-10-30 | 宝钢湛江钢铁有限公司 | Method for realizing deviation control of center line of plate blank |
| CN111842507B (en) * | 2020-07-10 | 2022-03-18 | 宝钢湛江钢铁有限公司 | Method for realizing deviation control of center line of plate blank |
| CN113953332A (en) * | 2020-07-21 | 2022-01-21 | 宝山钢铁股份有限公司 | Control method for strip steel single-side wave shape between hot continuous rolling mill frames |
| CN112742879A (en) * | 2021-01-04 | 2021-05-04 | 南京钢铁股份有限公司 | Control method for camber of medium plate |
| CN112958633A (en) * | 2021-01-28 | 2021-06-15 | 北京科技大学设计研究院有限公司 | Incoming material camber-based fine rolling strip steel head pre-swing leveling control method |
| CN112958633B (en) * | 2021-01-28 | 2022-05-31 | 北京科技大学设计研究院有限公司 | Incoming material camber-based fine rolling strip steel head pre-swing leveling control method |
| CN113680829A (en) * | 2021-08-20 | 2021-11-23 | 鞍钢集团自动化有限公司 | Novel sickle elbow part pre-control method |
| CN114160586A (en) * | 2021-12-02 | 2022-03-11 | 唐山学院 | Compensation method for hot rolling medium plate rolling center line offset |
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