CN107661902A - A kind of quick method for establishing cold-rolled process roller heat convex degree learning - Google Patents
A kind of quick method for establishing cold-rolled process roller heat convex degree learning Download PDFInfo
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- CN107661902A CN107661902A CN201610613238.0A CN201610613238A CN107661902A CN 107661902 A CN107661902 A CN 107661902A CN 201610613238 A CN201610613238 A CN 201610613238A CN 107661902 A CN107661902 A CN 107661902A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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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
- B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
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Abstract
A kind of quick method for establishing cold-rolled process roller heat convex degree learning, belongs to metal rolled field.When collecting some frame roll change signal, the emulsification flow quantity that beam and roll change rack outlet cooling spray beam are sprayed to interstand cooling respectively enters warm control model, it is determined that need to roll the quantity set point of coil of strip, detect and record the quantity for having rolled coil of strip, proportionality coefficient is multiplied by according to former emulsion flow setting value, the emulsification flow quantity of the emulsification flow quantity and outlet cooling spray beam of interstand cooling spray beam is carried out reducing adjustment accordingly, detects whether the quantity for having rolled coil of strip recorded reaches the quantity set point for needing to roll coil of strip；It is such as no, repeat the above steps；In this way, warm control model is terminated.It can realize the quick foundation of roll thermal crown after roll replacing in cold continuous rolling process, reduce the production loss in roll warm, improve the quality control level and production stability of roll warm.Suitable for the production process control field of cold mill complex.
Description
Technical field
The invention belongs to the rolling field of metal, more particularly to a kind of control method for being specially adapted for rolling mill for metal.
Background technology
At present in cold rolling process production process of plate, the overwhelming majority is produced using 6 roller mills or 4 roller mills, with 6 rollers
Exemplified by sour tandem mill, when working roll or intermediate calender rolls are rolled when tonnage is counted to, it is necessary to be operated the replacing of roller or intermediate calender rolls.In phase
Answer roll change after, because roll self-temperature is relatively low, the corresponding roll thermal crown of roll is not set up also, so when Strip Shape Control ability
Difference, production process are unstable.
For this situation, common practice in the industry is that about 5-7 volumes product progress low speed production is built after roll is changed at present
The vertical new roll thermal crown for changing roll, common practices are as follows：
| Number is rolled up after roll change | The setting speed upper limit |
| First volume 2 | 50% |
| The 3-4 volumes | 70% |
| The 5-6 volumes | 85% |
| Volume 7 and after | 100% |
The purpose of such a way is the roll thermal crown for progressively establishing roll, but its negative effect is also fairly obvious, a side
Needs so many pre- hot rolling in face significantly reduces the production efficiency of cold continuous rolling process.Meanwhile roll thermal crown does not set up preceding production board
After shape controlled level is substantially less than foundation, the quality condition of corresponding pre- hot rolling is also poor compared with normal volume.
Problem be present in prior art：
1st, so many pre- hot rolling is needed to significantly reduce the production efficiency of cold continuous rolling process.
2nd, product plate shape controlled level is substantially less than before roll thermal crown is not set up establish after, the quality condition of corresponding pre- hot rolling compared with
Normal volume is poor.
Application No. CN89108636.6, the authorization day for announcing are in September, 1992 Chinese invention patent of 16 days, disclose one
Kind of the convexity controllable roll of special-shaped oil pocket " have ", the oil pocket section of its roll be lens-shaped curve, the summit of curve with
Mandrel (or roller set) contacts so that mandrel backing roll set, and the volume of roll oil pocket is greatly reduced, rung in favor of improving rolling
Answer speed.According to width of rolling stock and rolling mill practice requirement, the oil pocket of the roll can be designed as one or more than one.This rolls
Roller overcomes the shortcomings that VC rolls, has center and edge plate shape control effect good, it is not necessary to which bend roller mechanism of battery coordinates；Rolling reaction
It hurry up；Mill bar quality is good；The advantages that production efficiency is high, there is significant economic benefit.
Involved by above-mentioned technical proposal is a kind of convexity controllable roll with special-shaped oil pocket, but the life of such a roll
Production and maintenance cost are high, and actual use scope is extremely narrow, and general cold continuous rolling is not used, and are solved required for can not solving herein
Problem.
Authorization Notice No. is CN101462124B, and authorized announcement date is the Chinese invention patent on June 15th, 2011, open
A kind of strip crown for Rolling production can on-line tuning roll.Its technical scheme is：At the end at topping roll body of roll both ends
A concentric toroidal cavity respectively symmetrically is respectively dug in face, and in the end face at bottom roll body of roll both ends, also each digging one is concentric respectively symmetrically
Toroidal cavity；The shape of four toroidal cavities is identical, respectively sets shape identical annular sliding in each toroidal cavity
Block.The technical scheme, because the roll surface spacing on upper and lower roll barrel both sides is increased, avoids the side of rolled piece 4 in rolling
The phenomenon that portion is thinned, substantially reduces strip crown, improves the dimensional accuracy of rolled product；Especially by axially adjustable ring
Position of the shape sliding block in toroidal cavity, then the thickness of rolled piece edge is can adjust, realizes on-line tuning and the improvement of strip crown.
Involved by above-mentioned technical proposal be a kind of strip crown can on-line tuning roll, but production and the dimension of such a roll
Shield cost is high, and actual use scope is extremely narrow, and general cold continuous rolling is not used, and solution asks required for can not solving the application
Topic.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of quick method for establishing cold-rolled process roller heat convex degree learning.Its
The corresponding discharge for spraying the emulsion of beam by controlling and reducing each emulsion of roll change frame, realizes that roll is more in cold continuous rolling process
The quick foundation of rear roll thermal crown is changed, the production loss that roll warm is brought can be reduced and improve the quality of roll warm
Controlled level and production stability.
The technical scheme is that：There is provided it is a kind of quickly establish the method for cold-rolled process roller heat convex degree learning, including pass through
The emulsification flow quantity of each cooling spray beam is controlled and adjusted, realizes the quick rise for being replaced roller temperature, described is each cold
But the outlet cooling spray that beam comprises at least interstand cooling spray beam and roll change frame between roll change frame and previous frame is sprayed
Beam；It is characterized in that：
A, according to the actual operating state of equipment, the corresponding roller replacing operation of frame progress for needing roll change, after roll change
The roll change frame sends roll change signal；
B, control system, which detects or gathers each frame, whether there is roll change signal, if nothing, according to normal production technology
Parameter carries out the flow control of each cooling spray beam emulsion；
C, when control system collects the roll change signal of some frame, the frame between exchange roller frame and previous frame
Between cooling spray beam emulsion flow control and roll change rack outlet cooling spray beam emulsion flow control respectively enter it is pre-
Thermal process control model；
D, warm is divided into three phases, A volumes of section, preceding B volumes of section and preceding C volumes of section before being respectively designated as；
E, control system determines to need to roll the quantity set point of coil of strip in preceding A volumes of section, preceding B volumes of section and preceding C volumes of section；
F, into the preceding A volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
G, during the preceding A volumes of section of warm, the first proportionality coefficient is multiplied by according to former emulsion flow setting value, it is right
The emulsification flow quantity of interstand cooling spray beam between roll change frame and previous frame carries out corresponding reduce and adjusted；According to former breast
Change flow quantity setting value and be multiplied by the second proportionality coefficient, the emulsification flow quantity progress for exchanging the outlet cooling spray beam of roller frame is corresponding
Reduce adjustment；
H, the A volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；
As no, repetition F-step；In this way, A volumes of section control model before terminating；
I, into the preceding B volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
J, during the preceding B volumes of section of warm, the 3rd proportionality coefficient is multiplied by according to former emulsion flow setting value, it is right
The emulsification flow quantity of interstand cooling spray beam between roll change frame and previous frame carries out corresponding reduce and adjusted；According to former breast
Change flow quantity setting value and be multiplied by the 4th proportionality coefficient, the emulsification flow quantity progress for exchanging the outlet cooling spray beam of roller frame is corresponding
Reduce adjustment；
K, the B volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；
As no, repetition I step；In this way, B volumes of section control model before terminating；
L, into the preceding C volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
M, during the preceding C volumes of section of warm, the 5th proportionality coefficient is multiplied by according to former emulsion flow setting value, it is right
The emulsification flow quantity of interstand cooling spray beam between roll change frame and previous frame carries out corresponding reduce and adjusted；According to former breast
Change flow quantity setting value and be multiplied by the 6th proportionality coefficient, the emulsification flow quantity progress for exchanging the outlet cooling spray beam of roller frame is corresponding
Reduce adjustment；
N, the C volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；
As no, repetition L steps；In this way, warm control model is terminated；
O, the flow that each cooling spray beam emulsion is carried out according to normal processing parameter controls；
The described quick method for establishing cold-rolled process roller heat convex degree learning, by adjusting roll change frame and previous frame respectively
Between interstand cooling spray beam and roll change frame outlet cooling spray beam emulsification flow quantity, improve each frame strip steel at entry
Temperature reduce heat loss, by reducing the cooling flow of emulsion realize that the plate face of coil of strip to be rolled normally heats up, with
The heating rate for being replaced roll is improved, the quick rise for being replaced roller temperature is realized, so as to realize cold-rolled process after roll change
The quick foundation of roller heat convex degree learning, the production loss that brings of warm after roller replacing operation is reduced, is preheated after improving roller replacing operation
The quality control level and production stability of process.
Further, in described warm, the 7th ratio, rise drying are multiplied by according to former drying temperature setting value
The desired temperature of machine, after warm control model terminates, the desired temperature of dryer recovers to normal value.
Specifically, the preceding A volumes of section, preceding B volumes of section and preceding C volumes of section need to roll the quantity set point of coil of strip, according to be rolled
The difference of the predetermined thickness after thickness and rolling before belt steel rolling processed determines.
Specifically, the quantity set point that the preceding A volumes of section needs to roll coil of strip is 1~2；The preceding B volumes of section needs to roll
The quantity set point position 2~4 of coil of strip；The quantity set point that the preceding C volumes of section needs to roll coil of strip is 3~6.
Specifically, the first described proportionality coefficient is 40%-85%；The second described proportionality coefficient is 50%-90%；Institute
The 3rd proportionality coefficient stated is 50%-90%；The 4th described proportionality coefficient is 60%-95；The 5th described proportionality coefficient is
60%-95%；The 6th described proportionality coefficient is 70%-100%.
Specifically, the 7th described proportionality coefficient is 110%-130%.
Further, described each proportionality coefficient, with before belt steel rolling to be rolled, rolling after thickness difference, into positive
Guan Xing.
Further, when some frame performs roller replacing operation, to the emulsion of the outlet cooling spray beam of the frame in itself
Flow carries out described reduction adjustment.
Further, when some frame performs roller replacing operation, the emulsion of beam is sprayed to the interstand cooling before the frame
Flow carries out described reduction adjustment.
Further, no matter which frame performs roller replacing operation, the 7th ratio is multiplied by according to former drying temperature setting value,
Raise the desired temperature of dryer.
Compared with the prior art, it is an advantage of the invention that：
, can be with the case where ensureing production stability 1. the method by quickly establishing cold-rolled process roller heat convex degree learning
By corresponding hot-rolling amount from former technique about need rolling volume 7 reduce at least only need rolling 3-4 volumes, significantly improve operating efficiency and
Improve the quality control level during hot-rolling.
2. because it provides a kind of processing method to emulsion process optimization and operation of rolling process optimization, so
It is not limited by specific emulsion technique and dryer process conditions, can be widely used for various tandem mills, is had wide
Market prospects.
Brief description of the drawings
Fig. 1 is the structure arrangement schematic diagram that the frame of 6 roller 5 of the invention is rolled and accordingly emulsion sprays beam；
Fig. 2 is the quick method flow block diagram for establishing cold-rolled process roller heat convex degree learning of the invention.
1 is upper backup roll in figure, and 2 be upper intermediate calender rolls, and 3 be top working roll, and 4 be bottom working roll, and 5 be lower intermediate calender rolls, under 6 are
Support roller.
1ETW~5ETW be respectively on the entrance of 1~No. 5 frame emulsion spray beam, 1EBW~for 5EBW be respectively 1~No. 5
The emulsified liquid spray beam of entrance of frame, 1DT~5DT are respectively that spray beam is cooled down in the outlet of 1~No. 5 frame, 1DB~5DB difference
For cooling spray beam under the outlet of 1~No. 5 frame, 1MT~4MT be respectively 2~No. 5 frames frame between upper cooling spray beam, 1MB~
4MB be respectively 2~No. 5 frames frame between lower cooling spray beam, 5SP be No. 5 frames outlet under cooling spray beam.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
In Fig. 1, by taking the most frequently used machine frame rolling mill of 6 roller 5 of cold continuous rolling as an example, wherein solid between upper and lower working roll
Line is the running route of coil of strip strip to be rolled, is represented with belt steel rolling center line in figure.
Involved support roller, intermediate calender rolls and working roll are that upper and lower corresponding is set in figure, therefore support roller, intermediate calender rolls
And working roll has upper and lower point；It is corresponding, entrance emulsion spray beam, outlet cooling spray beam and the interstand cooling of each frame
Spray beam is also to have upper and lower point.Because each equipment and emulsion spray beam involved in figure is existing equipment, therefore it has
Body structure and annexation will not be described in detail herein.
Each corresponding emulsion spray beam deployment scenarios can be seen that from figure has upper and lower emulsification in each frame entrance
Liquid spray beam (numbering is i ETW and i ETW, wherein i=1,2,3,4), its main function is to provide the lubrication of the operation of rolling；Every
Individual rack outlet is also provided with upper and lower emulsion spray beam (numbering be iDT and iDB, wherein i=1,2,3,4), its main function
To provide the roll cooling effect of the operation of rolling.Meanwhile between each two frame, it is also equipped with emulsion between upper and lower frame
Spray beam (numbering iMT, iMB, wherein i=1,2,3,4), there is provided the cooling on the upper and lower surface of strip.
Speed of production takes lower value in roll warm, and the purpose is to had enough time so that in low speed production process
Roll is obtained to be fully warmed-up.And according to cold continuous rolling production technology, in low speed production process, emulsion corresponding discharge and speed
For linear approximate relationship.But such a setting have ignored an important difference, i.e., roller temperature is relatively low during chilling roller state after roll change,
Required cooling is horizontal different with cooling requirement required under mill speed being during hot-rolling state after rolling a period of time, and mesh
Preceding emulsion flow set is entirely to be set on the basis of emulsification flow quantity during hot-rolling state.
Thus, first measure in control method described in the technical program is drawn, when system acquisition is to roll change signal,
Accordingly reduce for cooling spray beam flow after the frame of roll change frame in warm (each DT, DB in Fig. 1 and
5SP sprays beam).Because now roller temperature is relatively low, its refrigerating function emulsification flow quantity does not need the flow set under hot-rolling state
Value, therefore the quick rise of roller temperature can be realized by reducing cooling flow.
While cooling spray beam flow is reduced after frame, because mill speed is low under chilling roller state, roller temperature is low, plate face
Temperature is also low under more normal hot-rolling high-speed production state, and the demand of plate face cooling emulsion is also compared with normal water between frame now
It is flat low, therefore can be by the corresponding reduction of interstand cooling flow (each MT, MB in Fig. 1 spray beam), to realize that plate face is normal
Heating, accelerate roll heating rate.
While emulsion technique adjustment, heat loss can also be reduced by the raising of strip steel at entry temperature, accelerated
Roll heats up, and tandem mills can realize that the region of fast temperature adjustment sets for pickling section dryer temperature, can pass through drying
The raising of incoming band steel temperature is realized in the quick adjustment of machine desired temperature.
After above-mentioned corresponding measure collects, you can it is as shown in the table to obtain a kind of method for quickly establishing roller heat convex degree learning：
While stating measure on the implementation, according to following execution principle control and adjust accordingly：
1st, during some specific frame roll change, the outlet cooling spray beam parameter adjustment of the frame in itself.
2nd, during some specific frame roll change, the interstand cooling spray beam parameter adjustment before the frame.
3rd, whichever frame roll change, dryer relevant parameter adjust.
The each technical measures of summary and step, you can obtain that the present invention shown in Fig. 2 is quick to be established cold-rolled process and roll
The method flow block diagram of roller roll thermal crown.
In Fig. 2, technical scheme provides a kind of quick method for establishing cold-rolled process roller heat convex degree learning, and it is sent out
Bright point is：
1st, in normal productive process, if system does not send roll change signal, emulsion technique and dryer technique are not
Adjust, control program logic continues to operate according to normal production technology；
If the 2, sending roll change signal in production process, the quantity (referred to as volume number) of coil of strip has been rolled after roll change in A volumes of model
In enclosing, dryer temperature is automatically adjusted according to gG, the emulsion flow value (letter of the rack outlet cooling spray beam of roll change frame
Referred to as flow value, similarly hereinafter) be automatically adjusted according to aX, the flow of strip cooling spray beam between roll change frame and previous frame frame
Value is according to dD adjust automaticallies；
If the 3, having rolled coil of strip quantity (B ＞ A) in the range of B volumes after roll change, dryer temperature is adjusted automatically according to gG
Whole, the flow value of the rack outlet cooling spray beam of roll change frame is automatically adjusted according to bY, roll change frame and previous frame machine
The flow value of strip cooling spray beam is according to eE adjust automaticallies between frame；
If the 4, having rolled coil of strip quantity (C ＞ B) in the range of C volumes after roll change, dryer temperature is adjusted automatically according to gG
Whole, the flow value of the rack outlet cooling spray beam of roll change frame is automatically adjusted according to cZ, roll change frame and previous frame machine
Strip cooling spray beam is according to fF adjust automaticallies between frame；
5th, coil of strip quantity has been rolled after roll change more than after C, dryer Parameter reconstruction returns normal value level, and control program
Logic continues to control the flow value of each cooling spray beam according to normal processing parameter.
Embodiment：
Carried out by taking certain 5 Stands Cold Tandem Mill as an example, after 1-3 frames working roll tonnage is counted in its normal productive process normal
Roll change operation, it is as follows according to former technique, its hot-rolling process：
| Number is rolled up after roll change | The setting speed upper limit |
| First volume 2 | 50% |
| 3-4 volumes | 70% |
| 5-6 volumes | 85% |
| Volume 7 and after | 100% |
After the roll crown quickly regulating method corresponding system of technical scheme comes into operation, in roll change operation
When, systems inspection to roll change signal and specific roll change frame signal, now perform roller heat convex degree learning quickly regulating method such as automatically
Under：
By the implementation of technical scheme, the level of being produced by below is realized：
| Number is rolled up after roll change | The setting speed upper limit |
| Volume 1 | 50% |
| Volume 2 | 70% |
| Volume 3 | 85% |
| Volume 4 and after | 100% |
It can be seen that by the implementation of technical scheme, can be by corresponding hot-rolling in the case where ensureing production stability
During need the quantity of rolled band steel, from former technique, volume about 7 are reduced to 3-4 volumes, are significantly improved operating efficiency and are improved
Quality control level during hot-rolling.
Due to technical scheme, by controlling each emulsion of roll change frame to spray the corresponding discharge of beam emulsion,
The quick foundation of roll thermal crown after roll is changed in cold continuous rolling process is realized, will be corresponding in the case where ensureing production stability
Hot-rolling amount about needs rolling volume 7 to reduce to 3-4 volumes of rolling is at least only needed from former technique, significantly improves operating efficiency, can reduce
Production loss that roll warm is brought simultaneously improves the quality control level and production stability of roll warm, so its
Do not limited by specific emulsion technique and dryer process conditions, can be widely used for various tandem mills, had wide
Market prospects.
It the method can be widely used in the production process control field of cold mill complex.
Claims (10)
1. a kind of quick method for establishing cold-rolled process roller heat convex degree learning, including by controlling and adjusting the breast of each cooling spray beam
Change flow quantity, realize the quick rise for being replaced roller temperature, described each cooling spray beam comprises at least roll change frame with before
The outlet cooling spray beam of interstand cooling spray beam and roll change frame between one frame；It is characterized in that：
A, according to the actual operating state of equipment, for needing the frame of roll change to carry out corresponding roller replacing operation, this is changed after roll change
Roller frame sends roll change signal；
B, control system, which detects or gathers each frame, whether there is roll change signal, if nothing, according to normal processing parameter
Carry out the flow control of each cooling spray beam emulsion；
C, it is cold between the frame between exchange roller frame and previous frame when control system collects the roll change signal of some frame
But the flow control of spray beam emulsion and the flow control of roll change rack outlet cooling spray beam emulsion respectively enter preheated
Process control pattern；
D, warm is divided into three phases, A volumes of section, preceding B volumes of section and preceding C volumes of section before being respectively designated as；
E, control system determines to need to roll the quantity set point of coil of strip in preceding A volumes of section, preceding B volumes of section and preceding C volumes of section；
F, into the preceding A volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
G, during the preceding A volumes of section of warm, the first proportionality coefficient is multiplied by according to former emulsion flow setting value, to roll change
The emulsification flow quantity of interstand cooling spray beam between frame and previous frame carries out corresponding reduce and adjusted；According to former emulsion
Flow setting value is multiplied by the second proportionality coefficient, and the emulsification flow quantity for exchanging the outlet cooling spray beam of roller frame is reduced accordingly
Adjustment；
H, the A volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；As no,
Repeat F-step；In this way, A volumes of section control model before terminating；
I, into the preceding B volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
J, during the preceding B volumes of section of warm, the 3rd proportionality coefficient is multiplied by according to former emulsion flow setting value, to roll change
The emulsification flow quantity of interstand cooling spray beam between frame and previous frame carries out corresponding reduce and adjusted；According to former emulsion
Flow setting value is multiplied by the 4th proportionality coefficient, and the emulsification flow quantity for exchanging the outlet cooling spray beam of roller frame is reduced accordingly
Adjustment；
K, the B volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；As no,
Repeat I step；In this way, B volumes of section control model before terminating；
L, into the preceding C volumes of section control model of warm, detect and record the quantity for having rolled coil of strip；
M, during the preceding C volumes of section of warm, the 5th proportionality coefficient is multiplied by according to former emulsion flow setting value, to roll change
The emulsification flow quantity of interstand cooling spray beam between frame and previous frame carries out corresponding reduce and adjusted；According to former emulsion
Flow setting value is multiplied by the 6th proportionality coefficient, and the emulsification flow quantity for exchanging the outlet cooling spray beam of roller frame is reduced accordingly
Adjustment；
N, the C volumes of quantity set point for needing to roll coil of strip before whether the quantity for having rolled coil of strip that detection is recorded reaches；As no,
Repeat L steps；In this way, warm control model is terminated；
O, the flow that each cooling spray beam emulsion is carried out according to normal processing parameter controls；
The described quick method for establishing cold-rolled process roller heat convex degree learning, by adjusting respectively between roll change frame and previous frame
Interstand cooling spray beam and roll change frame outlet cooling spray beam emulsification flow quantity, improve the temperature of each frame strip steel at entry
Spend to reduce heat loss, realize that the plate face of coil of strip to be rolled normally heats up by reducing the cooling flow of emulsion, to improve
The heating rate of roll is replaced, the quick rise for being replaced roller temperature is realized, so as to realize cold-rolled process roll after roll change
The quick foundation of roll thermal crown, the production loss that brings of warm after roller replacing operation is reduced, improves warm after roller replacing operation
Quality control level and production stability.
2. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1, it is characterized in that described pre-
In thermal process, the 7th ratio is multiplied by according to former drying temperature setting value, the desired temperature of dryer is raised, when preheated program control
After molding formula terminates, the desired temperature of dryer recovers to normal value.
3. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1, it is characterized in that described first A volumes
Section, preceding B volumes of section and preceding C volumes of section need to roll the quantity set point of coil of strip, according to the thickness before belt steel rolling to be rolled and rolling
The difference of predetermined thickness afterwards determines.
4. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 3, it is characterized in that the preceding A volumes of section
The quantity set point for needing to roll coil of strip is 1~2；The preceding B volumes of section needs to roll the quantity set point position 2~4 of coil of strip；It is described
The quantity set point that preceding C volumes of section needs to roll coil of strip is 3~6.
5. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1, it is characterized in that described first
Proportionality coefficient is 40%-85%；The second described proportionality coefficient is 50%-90%；The 3rd described proportionality coefficient is 50%-
90%；The 4th described proportionality coefficient is 60%-95；The 5th described proportionality coefficient is 60%-95%；The 6th described ratio
Coefficient is 70%-100%.
6. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 2, it is characterized in that the described the 7th
Proportionality coefficient is 110%-130%.
7. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 5 or 6, it is characterized in that described is each
Thickness difference before individual proportionality coefficient, with belt steel rolling to be rolled, after rolling, into positive correlation.
8. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1, it is characterized in that working as some frame
When performing roller replacing operation, the emulsification flow quantity that spray beam is cooled down to the outlet of the frame in itself carries out described reduction adjustment.
9. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1, it is characterized in that working as some frame
When performing roller replacing operation, the reduction described in the emulsification flow quantity progress of beam is sprayed to the interstand cooling before the frame and is adjusted.
10. according to the quick method for establishing cold-rolled process roller heat convex degree learning described in claim 1 or 2, no matter it is characterized in which
Individual frame performs roller replacing operation, is multiplied by the 7th ratio according to former drying temperature setting value, raises the desired temperature of dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613238.0A CN107661902B (en) | 2016-07-29 | 2016-07-29 | A method of quickly establishing cold-rolled process roller heat convex degree learning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610613238.0A CN107661902B (en) | 2016-07-29 | 2016-07-29 | A method of quickly establishing cold-rolled process roller heat convex degree learning |
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| Publication Number | Publication Date |
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| CN107661902A true CN107661902A (en) | 2018-02-06 |
| CN107661902B CN107661902B (en) | 2019-09-20 |
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| CN112387783A (en) * | 2020-10-29 | 2021-02-23 | 厦门厦顺铝箔有限公司 | Shape control method of aluminum foil for lithium ion battery |
| CN114011884A (en) * | 2021-10-19 | 2022-02-08 | 武汉钢铁有限公司 | Plate shape control method of cold-rolled wide plate |
| CN114798755A (en) * | 2022-04-26 | 2022-07-29 | 东北大学 | Method for analyzing influence of hot crown on plate shape in cold continuous rolling process |
| CN116351868A (en) * | 2023-03-23 | 2023-06-30 | 首钢智新迁安电磁材料有限公司 | Method for improving thickness precision of strip steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112387783A (en) * | 2020-10-29 | 2021-02-23 | 厦门厦顺铝箔有限公司 | Shape control method of aluminum foil for lithium ion battery |
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