CN105834224A - Method for preventing cool roller bed of hot rolling layer from steel rear-end collision - Google Patents
Method for preventing cool roller bed of hot rolling layer from steel rear-end collision Download PDFInfo
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Abstract
The invention relates to a method for preventing a cool roller bed of a hot rolling layer from steel rear-end collision. The rolling rhythm of adjacent front band steel and back band steel are controlled according to different steel types and specifications based on a preset technique requirement through a hot metal detector combined with a basic automatic controller and a process controller; and under the premise of ensuring the rolling rhythm, steel rear-end collision of a layer cool zone due to differences in steel types and specifications can be avoided. The method includes the steps: 1, theoretically calculating out a time gap value T between the tail of the front band steel and the head of the back band steel; 2, practically detecting and calculating out a real time gap value T ' between the tail of the front band steel and the head of the back band steel; and 3, comparing the T and the T ', and issuing an on-site swinging command or a moving command to the back band steel according the comparison result. The method can shorten overlong gap time during manual control processes, reduce unnecessary time waste, and can avoid steel rear-end collision of the layer cool zone due to differences in steel types and specifications under the premise of ensuring the fastest rolling rhythm.
Description
Technical field
The invention belongs to the strip steel control field in hot rolling, be specifically related to a kind of method preventing hot rolling layer-cold roller way from chasing after steel.
Background technology
The production capacity advantage playing hot continuous rolling factory just requires to make production play maximum effect, final energy in effective rolling time
Enough while ensureing product quality, it is achieved efficiency is maximum, consume minimum efficient production, and wherein key link is rolled exactly
The hourly output of line processed, and expressing concrete parameter is exactly rolling rhythm.
For improving the hourly output of rolling line, just must improve the rolling rhythm of strip steel, but premise is to ensure that strip steel is on rolling line
Do not chase after the situation of steel, to ensure the accurately normal with set of tracking.
Produce the tracking of strip steel on line at hot continuous rolling to need through heating furnace, roughing, finish rolling and several big regions such as batch.For protecting
Card strip steel do not occurs to chase after mutually in rolling line region, follow the tracks of and make mistakes in the case of, it is necessary to control with certain rolling rhythm
System, is controlled from the steel gap of taking out of the source heating furnace of rolling line, divides certain off time when two pieces of strip steel of front and back meet
When not rolling, it is ensured that it does not occur to chase after mutually, follow the tracks of situation about makeing mistakes.
In view of the steel grade of different cultivars specification is in the operation of rolling of hot continuous rolling, there is the biggest diversity in its mill speed,
If the most front and back two pieces of strip steel rolled after heating furnace is extracted out with changeless off time, it is possible to there will be
Following two situation:
(1) the time interval time is long:
Front and back two pieces of strip steel rhythm are the longest for off time, cause the waste of waiting time, affect hourly output and energy resource consumption；
(2) the time interval time is short:
Front and back two pieces of strip steel rhythm are the shortest for off time, and front and back two pieces of strip steel chase after in a certain physical region mutually.
The rolling rhythm of strip steel is all to be ensured by the control thought under normal circumstances, is retracted to finish rolling from heating furnace and enters
Port area, owing to the mill speed of roughing, the speed etc. of roller-way are all that comparison is fixed, therefore from off time relatively
For personnel be relatively easily controlled, and for rhythm sky also relatively accurately；But for finish rolling and batch region come
Say, owing to finish rolling exists the process of increasing speed rolling, batches and there is the process that reduction of speed batches, even and the strip steel of same specification,
Owing to the requirement of technology controlling and process is different, the acceleration of its raising speed and the rate of deceleration of reduction of speed also have certain difference, thus
In the assurance of gap time, personnel are difficult to be accurately controlled, also frequently occur in rolling rhythm gap shorter in the case of, front and back
Two pieces of strip steel chase after in layer-cold roller way mutually, cause strip steel and scrap, produce the accidents such as line shutdown, give normal produce with
The biggest impact that tissue brings.
In view of above-mentioned objective factor, produce the rolling rhythm of line, the off time of precise rolling control from improving, avoid simultaneously
Strip steel in the cold accident chasing after steel of layer, need to develop a kind of prevent that strip steel from chasing after before and after occurring in layer-cold roller way mutually from
Dynamic control function, the most accurately controls the off time of front and back band steel, it is ensured that the maximum of rolling line production capacity plays, with full
On-the-spot normal, the needs of steady production of foot.
Summary of the invention
For solving problem above, the present invention provides a kind of method preventing hot rolling layer-cold roller way from chasing after steel, it is possible to advise according to difference
Under lattice, kind, front and back band steel arrives the concrete time batching region, it is judged that the minimum clearance time required for front and back band steel,
The position of strip steel is controlled, it is ensured that strip steel does not chase after the accident of steel in layer-cold roller way by the steel chain condition that enters of rolling line；
Whilst not relying on the time Estimate that operator are rough, for the estimation partially grown off time during minimizing personnel control,
Reduce unnecessary time waste, avoid because of the difference in steel grade, specification under the precondition ensureing the fastest rolling rhythm
Causing and chase after steel accident in territory, layer cold area, its technical scheme is specific as follows:
A kind of method preventing hot rolling layer-cold roller way from chasing after steel, it is characterised in that: by hot metal detector, coordinate basis certainly
Dynamicization control machine and process controller, according to the requirement of technique initialization to two pieces of adjacent strip steel of front and back according to different steel grades
Realize into the control rolling rhythm with specification, thus on the premise of ensureing rolling rhythm, it is to avoid because of the difference in steel grade, specification
The different territory, layer cold area caused chases after steel accident, comprises the following steps that
S1: when the steel grade of specification of the same race enters last passage of roughing, process computer calculates according to process set value
Go out previous piece of tail part of band steel from finish rolling entrance to the time of coiling machine entranceCalculate rear one according to process set value simultaneously
Block strip steel head from finish rolling entrance to the time of coiling machine entrance
S2: process computer is according to technique initialization requirement, according to calculateCalculate two pieces of strip steel of before and after
Minimum clearance time T, and T value is issued to basic automatization control machine；
S3: arrange strip steel physical location test point in finish rolling inlet region, described test point records previous piece of tail part of band steel respectively
Due in point t1 and rear one piece of strip steel head due in point t2, sends to basic automatization control by t1, t2 value of record
Machine；
S4: basic automatization controls machine and goes out two pieces of strip steel actual interval time T ' of before and after according to the mathematic interpolation of t2, t1；
S5: basic automatization controls the size that machine compares T ' and T,
As T ' >=T, rear one piece of strip steel is issued the instruction that moves ahead, enters rolling,
As T ' ＜ T, rear one piece of strip steel is issued the instruction of original place pendulum steel T '-T second, moves ahead after pendulum steel release
Enter rolling.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel according to the present invention, it is characterised in that: in step S1, described
" rear one piece of strip steel head from finish rolling entrance to coiling machine entrance " be specially " rear one piece of strip steel head from finish rolling entrance to
Second from the bottom group of roller-way before coiling machine ".
A kind of method preventing hot rolling layer-cold roller way from chasing after steel according to the present invention, it is characterised in that: in step S1Abide by
Follow:
Wherein:
N-th piece of tail part of band steel time (s) from flying shear to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
Ldc: constant, the distance (m) of F7 frame to coiling machine,
V0: variable, the strip speed (m/s) before F1,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet,
Vout: variable, throwing steel speed (m/s) of strip steel,
VBatch: variable, tail part of band steel enters the speed (m/s) of coiling machine,
h7: variable, finished product thickness (mm),
h0: variable, workpiece thickness (mm).
A kind of method preventing hot rolling layer-cold roller way from chasing after steel according to the present invention, it is characterised in that: in step S1Abide by
Follow:
In formula:
N+1 strip steel head is the time (s) of Ki (second from the bottom group) roller-way before finish rolling flying shear entrance to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
LBefore dc: constant, the distance (m) of Ki roller-way before F7 frame to coiling machine,
VDe-scaling: variable, strip steel head crosses the speed (m/s) in finish rolling entrance flying shear region,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel according to the present invention, it is characterised in that: in step s 2, institute
State
Wherein, t: constant, the minimum cadence time (s) of front and back band steel.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel of the present invention, it is provided that the meter of off time between a kind of front and back band steel
Calculation mode, it is possible to arrive the concrete time batching region according to front and back band steel under different size, kind, it is judged that front and back band steel
The required minimum clearance time, control the position of strip steel by the steel chain condition that enters of rolling line, it is ensured that strip steel is cold at layer
The accident of steel is not chased after on roller-way；Whilst not relying on the time Estimate that operator are rough, reduce personnel control process
In for the estimation partially grown off time, reduce unnecessary time waste, in the precondition ensureing the fastest rolling rhythm
Under avoid chasing after steel accident because the difference in steel grade, specification causes in territory, layer cold area.Can effectively avoid two pieces of strip steel of before and after
Cause two pieces of strip steel of before and after to knock into the back in layer-cold roller way the accident of steel scrap because of the difference of mill speed, and thereby result in non-must
The downtime wanted, on producing the impact caused normally；Improve the hourly output of rolling line simultaneously and reduce energy
Consumption waste.
Accompanying drawing explanation
Fig. 1 is the control flow chart of the present invention.
Detailed description of the invention
Below, according to the specification drawings and specific embodiments a kind of side preventing hot rolling layer-cold roller way from chasing after steel to the present invention
Method is further described in detail.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel, it is characterised in that: by hot metal detector, coordinate basis certainly
Dynamicization control machine and process controller, according to the requirement of technique initialization to two pieces of adjacent strip steel of front and back according to different steel grades
Realize into the control rolling rhythm with specification, thus on the premise of ensureing rolling rhythm, it is to avoid because of the difference in steel grade, specification
The different territory, layer cold area caused chases after steel accident, comprises the following steps that
S1: when the steel grade of specification of the same race enters last passage of roughing, process computer calculates according to process set value
Go out previous piece of tail part of band steel from finish rolling entrance to the time of coiling machine entranceCalculate rear one according to process set value simultaneously
Block strip steel head from finish rolling entrance to the time of coiling machine entrance
S2: process computer is according to technique initialization requirement, according to calculateCalculate two pieces of strip steel of before and after
Minimum clearance time T, and T value is issued to basic automatization control machine；
S3: arrange strip steel physical location test point in finish rolling inlet region, described test point records previous piece of tail part of band steel respectively
Due in point t1 and rear one piece of strip steel head due in point t2, sends to basic automatization control by t1, t2 value of record
Machine；
S4: basic automatization controls machine and goes out two pieces of strip steel actual interval time T ' of before and after according to the mathematic interpolation of t2, t1；
S5: basic automatization controls the size that machine compares T ' and T,
As T ' >=T, rear one piece of strip steel is issued the instruction that moves ahead, enters rolling,
As T ' ＜ T, rear one piece of strip steel is issued the instruction of original place pendulum steel T '-T second, moves ahead after pendulum steel release
Enter rolling.
Further, in step S1, described " rear one piece of strip steel head from finish rolling entrance to coiling machine entrance " is concrete
For " rear one piece of strip steel head second from the bottom group of roller-way before finish rolling entrance to coiling machine ".
Further, in step S1Follow:
Wherein:
N-th piece of tail part of band steel time (s) from flying shear to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
Ldc: constant, the distance (m) of F7 frame to coiling machine,
V0: variable, the strip speed (m/s) before F1,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet,
Vout: variable, throwing steel speed (m/s) of strip steel,
VBatch: variable, tail part of band steel enters the speed (m/s) of coiling machine,
h7: variable, finished product thickness (mm),
h0: variable, workpiece thickness (mm).
Further, in step S1Follow:
In formula:
N+1 strip steel head is the time (s) of Ki (second from the bottom group) roller-way before finish rolling flying shear entrance to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
LBefore dc: constant, the distance (m) of Ki roller-way before F7 frame to coiling machine,
VDe-scaling: variable, strip steel head crosses the speed (m/s) in finish rolling entrance flying shear region,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet.
Further, in step s 2, described
Wherein, t: constant, the minimum cadence time (s) of front and back band steel.
Embodiment
Due to the major control strip steel situation that front and back two pieces of strip steel do not knock into the back in layer-cold roller way region, mainly control
System is to batching the operation matter of time that in region, front and back two pieces of strip steel are minimum from finish rolling entrance: the tail of the most previous piece of strip steel
Portion, after leaving finish rolling F7 frame, meets rear one piece of strip steel and enters the condition of finishing stand rolling, but must assure that previous piece
When tail part of band steel is batched complete smoothly, rear one piece of strip steel gets to the position of coiling machine, and now coiling machine function
Meet the condition batched.
1, finish rolling entrance judges the selection of point
In order to two pieces of strip steel do not knock into the back in territory, layer cold area before and after Kong Zhiing, if rear one piece of strip steel head enters finishing mill
Frame rolls, and is difficult to retrieve when comparing judgement the most again, it is therefore necessary to select just to enter in finish rolling entrance area
Row judges and calculates.
Generally strip steel entrance area is equipped with hot metal detector, in order to follow the tracks of the regional location that strip steel reality is reached, simultaneously
The calculating of relevant control unit program is encouraged by the signal of hot metal detector.
Owing to two pieces of strip steel of front and back can not occur in same tracking area, it is to avoid physics is followed the tracks of and made mistakes, so from finish rolling entrance
The fixed height of photocell distribution situation of region configuration, typically can judge to click to be selected as and finish rolling tracking area two separately by entrance
At tracking area, i.e. at HMD 1 in H1 tracking area, it is ensured that front and back band steel does not occurs in same tracking area, simultaneously
There has also been regular hour calculating surplus.
Assuming that the afterbody of previous piece of strip steel starts at HMD1 to batching to batch the complete required time smoothly and be from leaving
The head of rear one piece of strip steel is from reaching to start at HMD1 to batching the required time of nipping smoothlyFront and back band steel institute
The minimum safe time needed is T, then can calculate the minimum safe of every piece of strip steel whenever last passes of roughing
Time T, begins to timing when previous piece of tail part of band steel leaves HMD1, if the head of rear one piece of strip steel arrives in time T
Reach HMD1, then stop pendulum steel and do not enter H1 tracking area, until the requirement that the time meets T moves ahead again；If rear one piece of strip steel
Head time T after arrive HMD1 place, then illustrate will not occur the accident front and back knocked into the back can directly before be advanced into H1 with
Roll after track.
2, the operation Time Calculation of previous piece of tail part of band steel
Previous piece of tail part of band steel is batched complete from finish rolling entrance to coiling machine, and its velocity characteristic is: strip steel at the uniform velocity throws steel with speed
Degree VoutLeave end frame F7, start to reduce speed now on layer-cold roller way from F7 until to during coiling machine so that speed must be batched
Degree VBatchEntering coiling machine, velocity characteristic figure is as follows:
The most previous piece of tail part of band steel is from the concrete time of finish rolling entrance to coiling machine entranceIt is calculated as:
Wherein:
The n tail part of band steel time (s) from flying shear to coiling machine
Lcs: constant, from flying shear to the distance (m) of F1 frame
L: constant, the distance (m) between frame
Ldc: constant, the distance (m) of F7 frame to coiling machine
V0: variable, the strip speed (m/s) before F1,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet
Vout: variable, throwing steel speed (m/s) of strip steel
VBatch: variable, tail part of band steel enters the speed (m/s) of coiling machine
h7: variable, finished product thickness (mm)
h0: variable, workpiece thickness (mm)
3, the operation Time Calculation of rear one piece of strip steel head
The head of rear one piece of strip steel from finish rolling entrance to coiling machine entrance, its velocity characteristic is: strip steel is with certain speed
VDe-scalingBy finish rolling entrance and flying shear region, when passing through F1～F7 with the speed that each frame is different after entering F1 frame
Frame, after head leaves end frame F7, carries out raising speed with certain acceleration, when raising speed to V1Time right up to batch
Machine, velocity characteristic figure is as follows:
Its acceleration of boosting velocity procedure after going out F7 due to general strip steel is the least, therefore exports to the speed of coiling machine from F7
Operational mode can be approximated to be process at the uniform velocity, VBatch≈V7.Time simultaneously for ensureing that next block strip steel arrives coiling machine, volume
Take function and had been provided with batching the condition of this block specifications strip steel, therefore when next block strip steel head arrive before batching a certain
During group roller-way, coiling machine needs to judge that now batching function has met, and then can occur when batching function and being unsatisfactory for
Batch automatically stopping soon of roller-way, before therefore the operation time needs of next block strip steel head calculate from finish rolling entrance to crimping machine
The operation time of Ki roller-way.
Rear one piece of strip steel head from finish rolling entrance to coiling machine before Ki roller-way concrete operation timeIt is calculated as:
In formula:
N+1 strip steel head is the time (s) of Ki roller-way before finish rolling flying shear entrance to coiling machine
Lcs: constant, from flying shear to the distance (m) of F1 frame
L: constant, the distance (m) between frame
LBefore dc: constant, the distance (m) of Ki roller-way before F7 frame to coiling machine
VDe-scaling: variable, strip steel head crosses the speed (m/s) in finish rolling entrance flying shear region
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet
4, the minimum clearance Time Calculation of front and back band steel
The known previous piece of tail part of band steel concrete time from finish rolling entrance to coiling machineRear one piece of strip steel head is from finish rolling
Entrance is to the concrete operation time of Ki roller-way before coiling machineSimultaneously take account of front and back band steel can not occur in same with
In track region, i.e. can not simultaneously appear in (between HMD2 and HMD1) in finish rolling porch H1 follows the tracks of, this is defined as
Little cadence time t, because tracking area length, roller-way speed are definite value, therefore t is definite value.During the minimum clearance of then front and back band steel
Between be:
In formula:
T: variable, minimum clearance time (s)
T: constant, the minimum cadence time (s) of front and back band steel
The n tail part of band steel time (s) from flying shear to coiling machine
N+1 strip steel head is the time (s) of Ki roller-way before finish rolling flying shear entrance to coiling machine
5, the judgement whether rear one piece of strip steel runs
According to above-mentioned formula, n-th piece of strip steel finish rolling rolls when, its afterbody operation time from flying shear to coiling machine
It has been determined that its head is before finish rolling flying shear entrance to coiling machine when (n+1)th piece of strip steel is at last passes of roughing
The time of Ki roller-wayIt is also determined that, the minimum clearance time of front and back band steel can be calculated
Accumulative timing is started, if the head of rear one piece of strip steel is in time T from when previous piece of strip steel n afterbody leaves HMD1
Arriving HMD1, if rear one piece of n+1 strip steel head arrives HMD1 in time T, then n+1 strip steel rests on MHD1 forward swing
Steel, does not enter H1 tracking area, until after adding up, before MHD1, the requirement that the pendulum steel time meets T, then cancel into steel chain
Allow strip steel to moving ahead.
If the head time of rear one piece of n+1 strip steel arrives the time t at HMD1 is more than required T time, then illustrate not
The accident front and back knocked into the back can occur, then can directly before be advanced into after H1 follows the tracks of and roll.
Embodiment is applied
In current control reality, when the thickness of previous piece of strip steel n strip steel is 3.2mm specification, it is in each frame
Threading speed as follows:
| V0 | V1 | V2 | V3 | V4 | V5 | V6 | V7 |
| 0.68 | 1.19 | 1.94 | 3.16 | 4.40 | 5.65 | 6.68 | 7.50 |
Because of Vout=8.24 meter per seconds, so the throwing steel speed calculation of each frame is as follows:
| V0 | V1 | V2 | V3 | V4 | V5 | V6 | V7 |
| 0.75 | 1.30 | 2.13 | 3.47 | 4.84 | 6.21 | 7.33 | 8.24 |
According to existing situation, Lcs=10.4 meters, L=5.8 rice, VBatch=4 meter per seconds, Ldc=144.04 meters, then according to n
Tail part of band steel operation time formula:
When the thickness of rear one piece of strip steel n+1 strip steel is 2.03mm specification, the threading speed needed for its each frame is:
| V0 | V1 | V2 | V3 | V4 | V5 | V6 | V7 |
| 0.59 | 1.29 | 2.42 | 4.27 | 6.11 | 8.08 | 9.25 | 10.20 |
VDe-scalingValue is 1.1 meter per seconds, LBefore dc=114.64 meters, then according to n+1 strip steel head operation time formula:
The minimum cadence time taking front and back band steel is 14 seconds, then the minimum clearance time is
When n strip steel (thickness is 3.2mm) afterbody leaves HMD1, timer starts,
(1) if the time that next block n+1 strip steel (thickness is 2.0mm) head arrives HMD1 from roughing is 20 seconds,
Time interval is less than 31.97 seconds, then n+1 strip steel (thickness is 2.0mm) just automatic swing 11.97 seconds before HMD1,
Until having reached total time 31.97 seconds just to allow into steel, and roll.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel of the present invention, it is provided that the meter of off time between a kind of front and back band steel
Calculation mode, it is possible to arrive the concrete time batching region according to front and back band steel under different size, kind, it is judged that front and back band steel
The required minimum clearance time, control the position of strip steel by the steel chain condition that enters of rolling line, it is ensured that strip steel is cold at layer
The accident of steel is not chased after on roller-way；Whilst not relying on the time Estimate that operator are rough, reduce personnel control process
In for the estimation partially grown off time, reduce unnecessary time waste, in the precondition ensureing the fastest rolling rhythm
Under avoid chasing after steel accident because the difference in steel grade, specification causes in territory, layer cold area.Can effectively avoid two pieces of strip steel of before and after
Cause two pieces of strip steel of before and after to knock into the back in layer-cold roller way the accident of steel scrap because of the difference of mill speed, and thereby result in non-must
The downtime wanted, on producing the impact caused normally；Improve the hourly output of rolling line simultaneously and reduce energy
Consumption waste.
Claims (5)
1. one kind prevents the method that hot rolling layer-cold roller way chases after steel, it is characterised in that: by hot metal detector, coordinate basis certainly
Dynamicization control machine and process controller, according to technique initialization requirement to two pieces of adjacent strip steel of front and back according to different steel grades and
Specification realizes, into the control rolling rhythm, comprising the following steps that
S1: when the steel grade of specification of the same race enters last passage of roughing, process computer calculates according to process set value
Go out previous piece of tail part of band steel from finish rolling entrance to the time of coiling machine entranceCalculate latter one piece according to process set value simultaneously
Strip steel head from finish rolling entrance to the time of coiling machine entrance
S2: process computer is according to technique initialization requirement, according to calculateCalculate two pieces of strip steel of before and after
Small-gap suture time T, and T value is issued to basic automatization control machine；
S3: arrange strip steel physical location test point in finish rolling inlet region, described test point records previous piece of tail part of band steel respectively
Due in point t1 and rear one piece of strip steel head due in point t2, sends to basic automatization control by t1, t2 value of record
Machine；
S4: basic automatization controls machine and goes out two pieces of strip steel actual interval time T ' of before and after according to the mathematic interpolation of t2, t1；
S5: basic automatization controls the size that machine compares T ' and T,
As T ' >=T, rear one piece of strip steel is issued the instruction that moves ahead, enters rolling,
As T ' ＜ T, rear one piece of strip steel is issued the instruction of original place pendulum steel T '-T second, moves ahead after pendulum steel release
Enter rolling.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel the most according to claim 1, it is characterised in that: step S1
In, described " rear one piece of strip steel head from finish rolling entrance to coiling machine entrance " is specially that " rear one piece of strip steel head is from finish rolling
Entrance is to second from the bottom group of roller-way before coiling machine ".
A kind of method preventing hot rolling layer-cold roller way from chasing after steel the most according to claim 1, it is characterised in that: step S1
InFollow:
Wherein:
N-th piece of tail part of band steel time (s) from flying shear to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
Ldc: constant, the distance (m) of F7 frame to coiling machine,
V0: variable, the strip speed (m/s) before F1,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet,
Vout: variable, throwing steel speed (m/s) of strip steel,
VBatch: variable, tail part of band steel enters the speed (m/s) of coiling machine,
h7: variable, finished product thickness (mm),
h0: variable, workpiece thickness (mm).
A kind of method preventing hot rolling layer-cold roller way from chasing after steel the most according to claim 2, it is characterised in that: step S1
InFollow:
In formula:
N+1 strip steel head is the time (s) of Ki (second from the bottom group) roller-way before finish rolling flying shear entrance to coiling machine,
Lcs: constant, from flying shear to the distance (m) of F1 frame,
L: constant, the distance (m) between frame,
LdcBefore: constant, the distance (m) of Ki roller-way before F7 frame to coiling machine,
VDe-scaling: variable, strip steel head crosses the speed (m/s) in finish rolling entrance flying shear region,
V1～V7: variable, the strip speed (m/s) of F1～F7 outlet.
A kind of method preventing hot rolling layer-cold roller way from chasing after steel the most according to claim 1, it is characterised in that: in step
In S2, described
Wherein, t: constant, the minimum cadence time (s) of front and back band steel.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755865A (en) * | 2016-11-21 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of method for improving ferrite temperature homogeneity |
| CN107159718A (en) * | 2017-06-28 | 2017-09-15 | 山东钢铁股份有限公司 | A kind of Steel Rolling Control method, apparatus and system |
| CN108637018A (en) * | 2018-05-31 | 2018-10-12 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN109570242A (en) * | 2017-09-29 | 2019-04-05 | 宝山钢铁股份有限公司 | A kind of hot rolling cooling roller bed control system and method |
| CN109590335A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method preventing steel billet crown tail |
| CN109590337A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method preventing steel scrap |
| CN109590336A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method for steel billet spacing |
| CN110586661A (en) * | 2019-08-09 | 2019-12-20 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN111438193A (en) * | 2020-03-31 | 2020-07-24 | 首钢京唐钢铁联合有限责任公司 | Control method and control system for preventing rear-end collision during rolling of rough rolling slab |
| CN111524112A (en) * | 2020-04-17 | 2020-08-11 | 中冶赛迪重庆信息技术有限公司 | Steel chasing identification method, system, equipment and medium |
| CN112139260A (en) * | 2019-06-26 | 2020-12-29 | 宝山钢铁股份有限公司 | Hot rolling reversible pass rolling temperature drop control method |
| CN112872044A (en) * | 2021-01-13 | 2021-06-01 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling rolling rhythm |
| CN113290060A (en) * | 2021-05-18 | 2021-08-24 | 广西柳州钢铁集团有限公司 | Production rhythm control method of hot continuous rolling mill |
| CN114054520A (en) * | 2021-10-22 | 2022-02-18 | 山东莱钢永锋钢铁有限公司 | Automatic control production interval control device for head, top and tail of rolling line |
| CN114453428A (en) * | 2022-01-12 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing strip steel from rear-end collision in finish rolling coiling |
| CN114700377A (en) * | 2022-03-28 | 2022-07-05 | 北京京诚瑞达电气工程技术有限公司 | Method and system for controlling end-off rolling |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755865A (en) * | 2016-11-21 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of method for improving ferrite temperature homogeneity |
| CN107159718A (en) * | 2017-06-28 | 2017-09-15 | 山东钢铁股份有限公司 | A kind of Steel Rolling Control method, apparatus and system |
| CN107159718B (en) * | 2017-06-28 | 2018-11-23 | 山东钢铁股份有限公司 | A kind of Steel Rolling Control method, apparatus and system |
| CN109570242A (en) * | 2017-09-29 | 2019-04-05 | 宝山钢铁股份有限公司 | A kind of hot rolling cooling roller bed control system and method |
| CN108637018B (en) * | 2018-05-31 | 2019-10-08 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN108637018A (en) * | 2018-05-31 | 2018-10-12 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN109590337A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method preventing steel scrap |
| CN109590336A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method for steel billet spacing |
| CN109590336B (en) * | 2018-11-22 | 2020-06-26 | 阳春新钢铁有限责任公司 | Control system and method for steel billet spacing |
| CN109590335A (en) * | 2018-11-22 | 2019-04-09 | 阳春新钢铁有限责任公司 | A kind of control system and method preventing steel billet crown tail |
| CN112139260A (en) * | 2019-06-26 | 2020-12-29 | 宝山钢铁股份有限公司 | Hot rolling reversible pass rolling temperature drop control method |
| CN110586661A (en) * | 2019-08-09 | 2019-12-20 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN110586661B (en) * | 2019-08-09 | 2020-12-18 | 柳州钢铁股份有限公司 | Gapless rolling control method |
| CN111438193B (en) * | 2020-03-31 | 2021-09-21 | 首钢京唐钢铁联合有限责任公司 | Control method and control system for preventing rear-end collision during rolling of rough rolling slab |
| CN111438193A (en) * | 2020-03-31 | 2020-07-24 | 首钢京唐钢铁联合有限责任公司 | Control method and control system for preventing rear-end collision during rolling of rough rolling slab |
| CN111524112A (en) * | 2020-04-17 | 2020-08-11 | 中冶赛迪重庆信息技术有限公司 | Steel chasing identification method, system, equipment and medium |
| CN111524112B (en) * | 2020-04-17 | 2023-04-07 | 中冶赛迪信息技术(重庆)有限公司 | Steel chasing identification method, system, equipment and medium |
| CN112872044A (en) * | 2021-01-13 | 2021-06-01 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling rolling rhythm |
| CN112872044B (en) * | 2021-01-13 | 2023-02-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling rolling rhythm |
| CN113290060A (en) * | 2021-05-18 | 2021-08-24 | 广西柳州钢铁集团有限公司 | Production rhythm control method of hot continuous rolling mill |
| CN114054520A (en) * | 2021-10-22 | 2022-02-18 | 山东莱钢永锋钢铁有限公司 | Automatic control production interval control device for head, top and tail of rolling line |
| CN114453428A (en) * | 2022-01-12 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing strip steel from rear-end collision in finish rolling coiling |
| CN114453428B (en) * | 2022-01-12 | 2024-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing rear-end collision of strip steel in finish rolling and coiling |
| CN114700377A (en) * | 2022-03-28 | 2022-07-05 | 北京京诚瑞达电气工程技术有限公司 | Method and system for controlling end-off rolling |
| CN114700377B (en) * | 2022-03-28 | 2023-10-17 | 北京京诚瑞达电气工程技术有限公司 | Method and system for controlling head-removing rolling |
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