CN107199246A - Hot rolling thin gauge strip method for coiling - Google Patents
Hot rolling thin gauge strip method for coiling Download PDFInfo
- Publication number
- CN107199246A CN107199246A CN201710616523.2A CN201710616523A CN107199246A CN 107199246 A CN107199246 A CN 107199246A CN 201710616523 A CN201710616523 A CN 201710616523A CN 107199246 A CN107199246 A CN 107199246A
- Authority
- CN
- China
- Prior art keywords
- strip
- speed
- coiling
- finishing mill
- runout table
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/003—Regulation of tension or speed; Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
Abstract
The invention discloses a kind of hot rolling thin gauge strip method for coiling, it is related to technical field of metallurgy industry.Including：When strip is in the mm finishing mill unit, the strip is run with First Speed；The strip stem goes out the mm finishing mill unit, into the runout table, and the strip is run with First Speed；The pinch roll of the runout table and the coiling machine is run with second speed respectively；The strip stem sets up tension force, the strip Accelerating running into coiling machine；When the tail part of band steel arrival mm finishing mill unit first presets frame, the strip runs slowly, until the tail part of band steel goes out the mm finishing mill unit, the speed of the runout table and pinch roll is identical with the speed of the strip；The tail part of band steel goes out the mm finishing mill unit, and the strip is run with third speed, and the runout table and the pinch roll are run with fourth speed.The present invention can improve thin gauge strip curling quality.
Description
Technical field
The present invention relates to technical field of metallurgy industry, more particularly to a kind of hot rolling thin gauge strip method for coiling.
Background technology
As strip user is for the consideration for reducing member dead weight, reducing rolled steel dosage, reduction production cost factor, and
Country progressively increases to the protection of resource environment, and the demand to thin gauge strip increases sharply.Hot rolling thin gauge strip generation
For cold rolling same specification strip, to reducing resource consumption, reduction use cost is significant.But, existing hot rolled thin rule
There is the problem of reeling quality is poor in lattice strip, hot ultrathin specification strip steel reeling quality is solved the problems, such as, for hot rolled thin gauge strip
The production of steel is significant.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of hot rolling thin gauge strip method for coiling, to solve in the prior art
Hot rolling thin gauge strip crimps ropy problem.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of hot rolling thin gauge strip method for coiling, hot rolling thin gauge strip coiling system includes：Mm finishing mill unit, runout table and
Coiling machine；One end of the runout table is connected with the port of export of the mm finishing mill unit, the other end of the runout table and institute
The arrival end for stating coiling machine is connected；It the described method comprises the following steps：
When strip is in the mm finishing mill unit, the strip is run with First Speed；
The strip stem goes out the mm finishing mill unit, into the runout table, and the strip is run with First Speed；It is described defeated
The pinch roll for going out roller-way and the coiling machine is run with second speed respectively, and the second speed is more than or equal to the described first speed
Degree；
The strip stem sets up tension force into the coiling machine, the strip Accelerating running, the speed of the runout table and
The speed of the pinch roll is identical with the speed of the strip；
When the tail part of band steel arrival mm finishing mill unit first presets frame, the strip runs slowly, until the strip
Afterbody goes out the mm finishing mill unit, and the speed of the speed of the runout table and the pinch roll is identical with the speed of the strip；
The tail part of band steel goes out after the mm finishing mill unit, and the strip is run with third speed, the runout table and the folder
Roller is sent to be run with fourth speed, the fourth speed is less than or equal to the third speed.
Optionally, the strip stem goes out the mm finishing mill unit, into the runout table；The runout table and described
The pinch roll of coiling machine is run with second speed respectively, and the second speed is more than or equal to the First Speed, is specially：
The strip stem goes out the mm finishing mill unit second and presets frame, and into runout table, the strip is transported with First Speed
OK, second speed operation of the pinch roll of the runout table and the coiling machine using advanced rate as 1.0-1.2, until the band
Steel stem sets up tension force into the coiling machine；The advanced rate refers to that the second speed is the 1.0- of the First Speed
1.2 again.
Optionally, the tail part of band steel goes out after the mm finishing mill unit, and the strip is run with third speed, the outlet roller
Road and the pinch roll are run with fourth speed, and the fourth speed is less than or equal to the third speed, are specially：
The tail part of band steel goes out the mm finishing mill unit, and the strip is run with third speed, the runout table and the pinch
Fourth speed operation of the roller using delayed rate as 1.0-1.2, until the tail part of band steel enters the coiling machine；The delayed rate is
Refer to 1.0-1.2 times that the third speed is the fourth speed.
Optionally, when entering the mm finishing mill unit entrance, the belt steel temperature is 1080-1140 DEG C；Going out the essence
During milling train group, the belt steel temperature is 840-890 DEG C；The First Speed is 9.5-11m/s.
Optionally, the strip stem sets up tension force into the coiling machine, and the strip Accelerating running is specially：
The strip stem sets up tension force into the coiling machine, and the strip is using acceleration as 0.02-0.3m/s2Acceleration
Accelerating running.
Optionally, methods described also includes：
The top of rebound between the coiling machine is raised 10-15 millimeters.
Optionally, methods described also includes：
The flipper guide pressure and width surplus of the coiling machine are controlled, when the belt steel thickness is more than 2 millimeters, the flipper guide pressure
Power is set to 20-40 kilograms；When the belt steel thickness is less than or equal to 2 millimeters, the flipper guide pressure is set to 10-20 kilograms；
The strip stem enters before the flipper guide, and the width surplus is set to 70-100 millimeters；Enter institute in the strip stem
State after flipper guide, when the belt steel thickness is more than 2 millimeters, the width surplus is set to 30-35 millimeters, and the belt steel thickness is less than
Or during equal to 2 millimeters, the width surplus is set to 35-40 millimeters.
Optionally, methods described also includes：
The strip stem is not by water cooling, to cause the strip stem not have water resistance；
The remainder except the strip stem uses intensity of cooling point to spread cooling for 25%, to reduce the strip fortune
Capable water resistance.
Optionally, methods described also includes：
Adjust the side guide plate of recoiling machine opening degree and the actual value of centering and the numerical bias of setting value is less than or equal to 2 millis
Rice；
Adjust the unilateral pressure of the pinch roll, adjusting range ± 10 kilogram.
Optionally, methods described also includes：
Limit the tail part of band steel and throw steel speed less than or equal to 9m/s.
It is using the beneficial effect produced by above-mentioned technical proposal：The embodiment of the present invention is by controlling finish rolling outlet speed
Degree, realizes velocity-stabilization, by controlling the advanced rate and delayed rate of runout table and pinch roll, and the cold control strategy of optimization layer,
Realize strip even running；Reduce the gradient of rebound between coiling machine, realize the production of many coiling machines, offside guide plate Stress control and
Width surplus is controlled, it is ensured that steel edge portion quality, so as to realize that the second best in quality thin gauge strip is batched.
Brief description of the drawings
Fig. 1 is the implementation process figure of hot rolling thin gauge strip method for coiling provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, control accompanying drawing and combination implementation below
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, it is not intended to limit the present invention.
Hot rolling thin gauge strip coiling system includes：Mm finishing mill unit, runout table and coiling machine；The one of the runout table
End is connected with the port of export of the mm finishing mill unit, and the other end of the runout table is connected with the arrival end of the coiling machine.
Fig. 1 is refer to, Fig. 1 is hot rolling thin gauge strip method for coiling provided in an embodiment of the present invention, and methods described includes
Following steps：
Step S101, when strip is in the mm finishing mill unit, the strip is run with First Speed.
Optionally, when entering the mm finishing mill unit entrance, the belt steel temperature is 1080-1140 DEG C；Going out the essence
During milling train group, the belt steel temperature is 840-890 DEG C；The First Speed is 9.5-11m/s.
Step S102, the strip stem goes out the mm finishing mill unit, and into the runout table, the strip is with the first speed
Degree operation；The pinch roll of the runout table and the coiling machine is run with second speed respectively, the second speed be more than or
Equal to the First Speed.
In embodiments of the present invention, strip stem goes out mm finishing mill unit, and strip speed is kept constant, still transported with First Speed
OK, and runout table and pinch roll are run with second speed, First Speed and second speed are constant speed, so as to ensure band
Steel stem stable operation on the run-out table, it is ensured that strip stem reeling quality is good.
Optionally, step of embodiment of the present invention S102 specific implementations are：The strip stem goes out the mm finishing mill unit
Second default frame, into runout table, the strip is run with First Speed, the folder of the runout table and the coiling machine
Second speed operation of the roller using advanced rate as 1.0-1.2 is sent, until the strip stem sets up tension force into the coiling machine；Institute
State advanced rate and refer to that the second speed is 1.0-1.2 times of the First Speed.
In embodiments of the present invention, strip stem goes out the frame of mm finishing mill unit the 7th（F7）Built to strip stem into coiling machine
During vertical tension force, runout table, coiler pinch-roll and batch mandrel batch advanced rate respectively in the range of 1.0-1.2 gradually
It is incremented by.
Step S103, the strip stem sets up tension force, the strip Accelerating running, the output into the coiling machine
The speed of roller-way and the speed of the pinch roll are identical with the speed of the strip.
Optionally, the strip stem sets up tension force into coiling machine, is in mm finishing mill unit inlet temperature in the strip
1080-1140 DEG C, the strip is 840-890 DEG C in the mm finishing mill unit outlet temperature, and the First Speed is 9.5-11m/s
In the case of, the strip is using acceleration as 0.02-0.3m/s2Acceleration Accelerating running, the acceleration magnitude is according to strip
The deviation setting between actual temperature and design temperature is exported in mm finishing mill unit, to ensure strip in mm finishing mill unit outlet temperature
Reach 840-890 DEG C of design temperature.
In embodiments of the present invention, control entry temperature at finishing, outlet temperature and muzzle velocity.Entry temperature at finishing is
1080-1140 DEG C, to cause the initial temperature of strip to meet the demand of finish rolling cooling.Exit temperature at finishing is 840-890 DEG C, essence
Muzzle velocity is rolled for 9.5-11 m/s.By controlling the slab of coiling machine and the temperature of middle base, finishing speeds stabilization is set to exist
9.5-11 m/s.Before coiling machine sets up tension force, mm finishing mill unit keeps the operation of 9.5-11 m/s constant speeds, and coiling machine, which is set up, to be opened
After power control, according to the 0.02-0.3m/s of setting2Acceleration operation, realizes finishing temperature closed-loop control.
Step S104, when the tail part of band steel arrival mm finishing mill unit first presets frame, the strip runs slowly,
Until the tail part of band steel goes out the speed and the strip of the mm finishing mill unit, the speed of the runout table and the pinch roll
Speed it is identical.
In embodiments of the present invention, the described first default frame refers to the end racks of mm finishing mill unit, and tail part of band steel is reached
Mm finishing mill unit first presets frame and refers to that tail part of band steel reaches the end racks of mm finishing mill unit, and now, strip runs slowly, until
Tail part of band steel goes out mm finishing mill unit, and makes the speed of runout table and the speed of pinch roll identical with the speed of the strip.
Step S105, the tail part of band steel goes out after the mm finishing mill unit, and the strip is run with third speed, the output
Roller-way and the pinch roll are run with fourth speed, and the fourth speed is less than or equal to the third speed.
Optionally, step S105 specific implementation is：The tail part of band steel goes out the mm finishing mill unit, the strip with
Third speed is run, the fourth speed operation of the runout table and the pinch roll using delayed rate as 1.0-1.2, until described
Tail part of band steel enters the coiling machine；The delayed rate refers to that the third speed is 1.0-1.2 times of the fourth speed.
In embodiments of the present invention, when tail part of band steel goes out mm finishing mill unit, strip decelerates to third speed, then, strip with
Third speed is run, and now, the delayed rate of runout table and pinch roll is gradually successively decreased in the range of 1.2-1 respectively, and strip is defeated
Go out even running on roller-way.Strip goes out after finishing mill, and pinch roll and runout table produce delayed speed, and strip speed is constant, defeated
Go out roller table speed and pinch roll constant airspeed, and have compared with strip speed certain delayed, it is ensured that tail part of band steel is stable, from
And ensure that entire volume coil of strip shape is good.
Optionally, methods described also includes：The top of rebound between the coiling machine is raised 10-15 millimeters.
In the embodiment of the present invention, coiling machine valve outlet transition plate surface slope in initial designs is excessive, produces thin gauge strip mistake
Cheng Zhong, because speed is too high, strip steel head goes out after coiler pinch-roll through often there is head fold defect, even results in steel scrap, will
The top of rebound raises 10-15 millimeters, solves coiling machine and batches head fold defect during thin gauge strip, realizes many
Coiling machine is produced.
Optionally, methods described also includes：The flipper guide pressure and width surplus of the coiling machine are controlled, the strip is thick
When degree is more than 2 millimeters, the flipper guide pressure is set to 20-40 kilograms；It is described when the belt steel thickness is less than or equal to 2 millimeters
Flipper guide pressure is set to 10-20 kilograms；Before the strip stem enters the flipper guide, the width surplus is set to 70-100
Millimeter；After the strip stem enters the flipper guide, when the belt steel thickness is more than 2 millimeters, the width surplus is set to
30-35 millimeters, when the belt steel thickness is less than or equal to 2 millimeters, the width surplus is set to 35-40 millimeters.Control coiling machine
Flipper guide pressure and width surplus make steel edge portion quality good.
Optionally, methods described also includes：The strip stem is not by water cooling, to cause the strip stem not have
Water resistance；The remainder except the strip stem uses intensity of cooling point to spread cooling for 25%, to reduce the strip fortune
Capable water resistance.
Optionally, methods described also includes：Adjust actual value and the setting of the side guide plate of recoiling machine opening degree and centering
The numerical bias of value is less than or equal to 2 millimeters, it is ensured that flipper guide corrects trend to tail part of band steel normally, prevents afterbody turriform；Adjust
The whole unilateral Withdrawal roll pressure, adjusting range ± 10 kilogram improve coil of strip afterbody scroll quality
Optionally, methods described also includes：Limit the tail part of band steel and throw steel speed less than or equal to 9m/s.Tail is batched in mitigation
Motor burden during portion's reduction of speed, so that by the ability orientation of motor to the system control ring for keeping afterbody constant tension.
The embodiment of the present invention realizes velocity-stabilization by controlling finish rolling muzzle velocity, by controlling runout table and pinch
The advanced rate and delayed rate of roller, and the cold control strategy of optimization layer, realize strip even running；The slope of rebound between reduction coiling machine
Degree, realizes many coiling machine productions, offside guide plate Stress control and width surplus are controlled, it is ensured that steel edge portion quality, so that
Realize that the second best in quality thin gauge strip is batched.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present invention constitutes any limit with its function and internal logic
It is fixed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of hot rolling thin gauge strip method for coiling, it is characterised in that hot rolling thin gauge strip coiling system includes：Finishing mill
Group, runout table and coiling machine；One end of the runout table is connected with the port of export of the mm finishing mill unit, the runout table
The other end be connected with the arrival end of the coiling machine；
It the described method comprises the following steps：
When strip is in the mm finishing mill unit, the strip is run with First Speed；
The strip stem goes out the mm finishing mill unit, into the runout table, and the strip is run with First Speed；It is described defeated
The pinch roll for going out roller-way and the coiling machine is run with second speed respectively, and the second speed is more than or equal to the described first speed
Degree；
The strip stem sets up tension force into the coiling machine, the strip Accelerating running, the speed of the runout table and
The speed of the pinch roll is identical with the speed of the strip；
When the tail part of band steel arrival mm finishing mill unit first presets frame, the strip runs slowly, until the strip
Afterbody goes out the mm finishing mill unit, and the speed of the speed of the runout table and the pinch roll is identical with the speed of the strip；
The tail part of band steel goes out after the mm finishing mill unit, and the strip is run with third speed, the runout table and the folder
Roller is sent to be run with fourth speed, the fourth speed is less than or equal to the third speed.
2. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that the strip stem goes out the essence
Milling train group, into the runout table；The pinch roll of the runout table and the coiling machine is run with second speed respectively, institute
Second speed is stated more than or equal to the First Speed, is specially：
The strip stem goes out the mm finishing mill unit second and presets frame, and into runout table, the strip is transported with First Speed
OK, second speed operation of the pinch roll of the runout table and the coiling machine using advanced rate as 1.0-1.2, until the band
Steel stem sets up tension force into the coiling machine；The advanced rate refers to that the second speed is the 1.0- of the First Speed
1.2 again.
3. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that the tail part of band steel goes out the essence
After milling train group, the strip is run with third speed, and the runout table and the pinch roll are run with fourth speed, and described
Four speed are less than or equal to the third speed, are specially：
The tail part of band steel goes out the mm finishing mill unit, and the strip is run with third speed, the runout table and the pinch
Fourth speed operation of the roller using delayed rate as 1.0-1.2, until the tail part of band steel enters the coiling machine；The delayed rate is
Refer to 1.0-1.2 times that the third speed is the fourth speed.
4. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that enter into the mm finishing mill unit
During mouth, the belt steel temperature is 1080-1140 DEG C；When going out the mm finishing mill unit, the belt steel temperature is 840-890 DEG C；Institute
First Speed is stated for 9.5-11m/s.
5. hot rolling thin gauge strip method for coiling as claimed in claim 4, it is characterised in that the strip stem enters described
Coiling machine sets up tension force, and the strip Accelerating running is specially：
The strip stem sets up tension force into the coiling machine, and the strip is using acceleration as 0.02-0.3m/s2Acceleration
Accelerating running.
6. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that methods described also includes：
The top of rebound between the coiling machine is raised 10-15 millimeters.
7. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that methods described also includes：
The flipper guide pressure and width surplus of the coiling machine are controlled, when the belt steel thickness is more than 2 millimeters, the flipper guide pressure
Power is set to 20-40 kilograms；When the belt steel thickness is less than or equal to 2 millimeters, the flipper guide pressure is set to 10-20 kilograms；
The strip stem enters before the flipper guide, and the width surplus is set to 70-100 millimeters；Enter institute in the strip stem
State after flipper guide, when the belt steel thickness is more than 2 millimeters, the width surplus is set to 30-35 millimeters, and the belt steel thickness is less than
Or during equal to 2 millimeters, the width surplus is set to 35-40 millimeters.
8. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that methods described also includes：
The strip stem is not by water cooling, to cause the strip stem not have water resistance；
The remainder except the strip stem uses intensity of cooling point to spread cooling for 25%, to reduce the strip fortune
Capable water resistance.
9. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that methods described also includes：
Adjust the side guide plate of recoiling machine opening degree and the actual value of centering and the numerical bias of setting value is less than or equal to 2 millis
Rice；
Adjust the unilateral pressure of the pinch roll, adjusting range ± 10 kilogram.
10. hot rolling thin gauge strip method for coiling as claimed in claim 1, it is characterised in that methods described also includes：
Limit the tail part of band steel and throw steel speed less than or equal to 9m/s.
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|---|---|---|---|
| CN201710616523.2A CN107199246B (en) | 2017-07-26 | 2017-07-26 | Hot rolling thin gauge strip method for coiling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616523.2A CN107199246B (en) | 2017-07-26 | 2017-07-26 | Hot rolling thin gauge strip method for coiling |
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| CN107199246A true CN107199246A (en) | 2017-09-26 |
| CN107199246B CN107199246B (en) | 2019-10-29 |
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