CN107199246B - Hot rolling thin gauge strip method for coiling - Google Patents
Hot rolling thin gauge strip method for coiling Download PDFInfo
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- CN107199246B CN107199246B CN201710616523.2A CN201710616523A CN107199246B CN 107199246 B CN107199246 B CN 107199246B CN 201710616523 A CN201710616523 A CN 201710616523A CN 107199246 B CN107199246 B CN 107199246B
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- strip
- speed
- coiling
- finishing mill
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Classifications
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a kind of hot rolling thin gauge strip method for coiling, are related to technical field of metallurgy industry.Include: strip in the mm finishing mill unit when, the strip is run with First Speed；The strip stem goes out the mm finishing mill unit, and into the runout table, the strip is run with First Speed；The pinch roller of the runout table and the coiling machine is run respectively with second speed；The strip stem enters coiling machine and establishes tension, the strip Accelerating running；The tail part of band steel reaches the mm finishing mill unit first when presetting rack, and 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 roller is identical as 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 roller are run with fourth speed.The present invention can be improved thin gauge strip curling quality.
Description
Technical field
The present invention relates to technical field of metallurgy industry, in particular to a kind of hot rolling thin gauge strip method for coiling.
Background technique
As strip user is for the considerations of reducing member dead weight, reducing rolled steel dosage, reduction production cost factor, and
Country gradually increases 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 resource consumption is reduced, reduces use cost and be of great significance.But existing hot rolled thin rule
There is reeling quality difference 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 of great significance.
Summary 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 include: mm finishing mill unit, outlet roller
Road and coiling machine；One end of the runout table is connected with the outlet end of the mm finishing mill unit, the other end of the runout table
It is 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, and into the runout table, the strip is run with First Speed；Institute
The pinch roller for stating runout table and the coiling machine is run respectively with second speed, and the second speed is greater than or equal to described the
One speed；
The strip stem enters the coiling machine and establishes tension, the strip Accelerating running, the speed of the runout table
The speed of degree and the pinch roller is identical as the speed of the strip；
When the tail part of band steel arrival mm finishing mill unit first presets rack, the strip runs slowly, until described
Tail part of band steel goes out the mm finishing mill unit, the speed and the speed phase of the strip of the speed of the runout table and the pinch roller
Together；
After the tail part of band steel goes out the mm finishing mill unit, the strip is run with third speed, the runout table and institute
It states pinch roller to 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 roller of coiling machine is run respectively with second speed, and the second speed is greater than or equal to the First Speed, specifically:
The strip stem goes out the mm finishing mill unit second and presets rack, and into runout table, the strip is with the first speed
The pinch roller of degree operation, the runout table and the coiling machine is run with advanced rate for the second speed of 1.0-1.2, until institute
It states strip stem and establishes tension into the coiling machine；The advanced rate refers to that the second speed is the First Speed
1.0-1.2 again.
Optionally, after the tail part of band steel goes out the mm finishing mill unit, the strip is run with third speed, the outlet roller
Road and the pinch roller are run with fourth speed, and the fourth speed is less than or equal to the third speed, specifically:
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 described
Pinch roller is run with lagging rate as the fourth speed of 1.0-1.2, until the tail part of band steel enters the coiling machine；The lag
Rate refers to that the third speed is 1.0-1.2 times of the fourth speed.
Optionally, when entering the mm finishing mill unit entrance, the belt steel temperature is 1080-1140 DEG C；In the essence out
When milling train group, the belt steel temperature is 840-890 DEG C；The First Speed is 9.5-11m/s.
Optionally, the strip stem enters the coiling machine and establishes tension, the strip Accelerating running, specifically:
The strip stem enters the coiling machine and establishes tension, and the strip is 0.02-0.3m/s with acceleration2Plus
Speed Accelerating running.
Optionally, the method also includes:
The top of transition plates between the coiling machine is increased 10-15 millimeters.
Optionally, the method also includes:
The flipper guide pressure and width surplus of the coiling machine are controlled, when the steel strip thickness is greater than 2 millimeters, the side is led
Plate pressure is set as 20-40 kilograms；When the steel strip thickness is less than or equal to 2 millimeters, the flipper guide pressure is set as 10-20 thousand
Gram；Before the strip stem enters the flipper guide, the width surplus is set as 70-100 millimeters；The strip stem into
After entering the flipper guide, when the steel strip thickness is greater than 2 millimeters, the width surplus is set as 30-35 millimeters, the steel strip thickness
When less than or equal to 2 millimeters, the width surplus is set as 35-40 millimeters.
Optionally, the method also includes:
The strip stem is not cooling by water, so that the strip stem does not have water resistance；
The rest part except the strip stem uses intensity of cooling point to spread cooling for 25%, to reduce the band
The water resistance of steel operation.
Optionally, the method also includes:
The numerical bias of the actual value and setting value that adjust the side guide plate of recoiling machine opening degree and centering is less than or equal to 2
Millimeter；
Adjust the unilateral pressure of the pinch roller, adjusting range ± 10 kilogram.
Optionally, the method also includes:
It limits the tail part of band steel and throws steel speed less than or equal to 9m/s.
The beneficial effects of adopting the technical scheme are that the embodiment of the present invention passes through control finish rolling outlet speed
Degree realizes velocity-stabilization, by controlling the advanced rate and lag rate of runout table and pinch roller, and the cold control strategy of optimization layer,
Realize strip even running；The gradient for reducing transition plates between coiling machine, realizes the production of more coiling machines, the control of opposite side guide plate pressure and
Width surplus is controlled, and guarantees steel edge portion quality, to realize that the second best in quality thin gauge strip batches.
Detailed description of the invention
Fig. 1 is the implementation flow chart of hot rolling thin gauge strip method for coiling provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, attached drawing is compareed below and is combined implements
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used 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 outlet end of the mm finishing mill unit, and the other end of the runout table is connected with the arrival end of the coiling machine.
Referring to FIG. 1, Fig. 1 is hot rolling thin gauge strip method for coiling provided in an embodiment of the present invention, the method 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；In the essence out
When 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 roller of the runout table and the coiling machine is run respectively with second speed, the second speed be greater than or
Equal to the First Speed.
In embodiments of the present invention, strip stem goes out mm finishing mill unit, and strip speed remains unchanged, and is still transported with First Speed
Row, and runout table and pinch roller are run with second speed, and First Speed and second speed are constant speed, to guarantee band
The stable operation on the run-out table of steel stem guarantees that strip stem reeling quality is good.
Optionally, step of embodiment of the present invention S102 specific implementation are as follows: the strip stem goes out the mm finishing mill unit
Second default rack, into runout table, the strip is run with First Speed, the folder of the runout table and the coiling machine
Roller is sent to run with advanced rate for the second speed of 1.0-1.2, until the strip stem enters the coiling machine and establishes tension；Institute
It states advanced rate and refers to that the second speed is 1.0-1.2 times of the First Speed.
In embodiments of the present invention, strip stem, which goes out the 7th rack (F7) of mm finishing mill unit and enters coiling machine to strip stem, builds
During vertical tension, runout table, coiler pinch-roll and batch mandrel batch advanced rate respectively within the scope of 1.0-1.2 gradually
It is incremented by.
Step S103, the strip stem enter the coiling machine and establish tension, the strip Accelerating running, the output
The speed of roller-way and the speed of the pinch roller are identical as the speed of the strip.
Optionally, the strip stem enters coiling machine and establishes tension, 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 where, the strip is 0.02-0.3m/s with acceleration2Acceleration Accelerating running, which is according to strip
The deviation setting between actual temperature and set temperature is exported in mm finishing mill unit, to guarantee strip in mm finishing mill unit outlet temperature
Reach 840-890 DEG C of set temperature.
In embodiments of the present invention, entry temperature at finishing, outlet temperature and muzzle velocity are controlled.Entry temperature at finishing is
1080-1140 DEG C, so that the initial temperature of strip meets the needs of finish rolling cooling.Exit temperature at finishing is 840-890 DEG C, essence
Rolling muzzle velocity is 9.5-11 m/s.By controlling the slab of coiling machine and the temperature of intermediate base, stablize finishing speeds
9.5-11 m/s.Before coiling machine establishes tension, mm finishing mill unit keeps the operation of 9.5-11 m/s constant speed, and coiling machine, which is established, 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 rack, the strip runs slowly,
Until the tail part of band steel goes out the mm finishing mill unit, the speed and the strip of the speed of the runout table and the pinch roller
Speed it is identical.
In embodiments of the present invention, the described first default rack refers to the end racks of mm finishing mill unit, and tail part of band steel reaches
Mm finishing mill unit first presets rack and refers to that tail part of band steel reaches the end racks of mm finishing mill unit, at this point, strip runs slowly, until
Tail part of band steel goes out mm finishing mill unit, and make runout table speed and pinch roller speed it is identical as the speed of the strip.
Step S105, after the tail part of band steel goes out the mm finishing mill unit, the strip is run with third speed, the output
Roller-way and the pinch roller are run with fourth speed, and the fourth speed is less than or equal to the third speed.
Optionally, the specific implementation of step S105 are as follows: the tail part of band steel goes out the mm finishing mill unit, the strip with
Third speed operation, the runout table and the pinch roller are run with lagging rate as the fourth speed of 1.0-1.2, until described
Tail part of band steel enters the coiling machine；The lag 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 operation, at this point, the lag rate of runout table and pinch roller is gradually successively decreased out of 1.2-1 respectively, strip is defeated
Even running on roller-way out.After strip goes out finishing mill, pinch roller and runout table generate lag speed, and strip speed is constant, defeated
Roller table speed and pinch roller constant airspeed out, and have certain lag compared with strip speed, guarantee that tail part of band steel is stablized, from
And guarantee that entire volume coil of strip shape is good.
Optionally, the method also includes: the top of the transition plates between the coiling machine is increased 10-15 millimeters.In
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 excessively high, is often there is head fold defect after going out coiler pinch-roll in strip steel head, even results in steel scrap, will
The top of transition plates increases 10-15 millimeters, solves coiling machine and batches head fold defect during thin gauge strip, realizes more
Coiling machine production.
Optionally, the method also includes: control the flipper guide pressure and width surplus of the coiling machine, the strip is thick
When degree is greater than 2 millimeters, the flipper guide pressure is set as 20-40 kilograms；It is described when the steel strip thickness is less than or equal to 2 millimeters
Flipper guide pressure is set as 10-20 kilograms；Before the strip stem enters the flipper guide, the width surplus is set as 70-100
Millimeter；After the strip stem enters the flipper guide, when the steel strip thickness is greater than 2 millimeters, the width surplus is set as
30-35 millimeters, when the steel strip thickness is less than or equal to 2 millimeters, the width surplus is set as 35-40 millimeters.Control coiling machine
Flipper guide pressure and width surplus keep steel edge portion quality good.
Optionally, it is cooling not by water that the method also includes: the strip stems, so that the strip stem does not have
Water resistance；The rest part except the strip stem uses intensity of cooling point to spread cooling for 25%, to reduce the strip fortune
Capable water resistance.
Optionally, the method also includes: adjust the actual value and 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, guarantees that flipper guide is normal to tail part of band steel correction trend, and it is tower-shaped to prevent tail portion；It adjusts
The whole unilateral side Withdrawal roll pressure, adjusting range ± 10 kilogram improve coil of strip tail portion scroll quality
Optionally, the method also includes: limit the tail part of band steel and throw steel speed and be less than or equal to 9m/s.Mitigation is batched
Motor burden when drive end unit reduction of speed, thus by the ability orientation of motor into the system control ring for keeping tail portion constant tension.
The embodiment of the present invention realizes velocity-stabilization by control finish rolling muzzle velocity, passes through control runout table and pinch
The advanced rate and lag rate of roller, and the cold control strategy of optimization layer realize strip even running；The slope of transition plates between reduction coiling machine
Degree realizes more coiling machine productions, and the control of opposite side guide plate pressure and width surplus are controlled, and guarantees steel edge portion quality, thus
Realize that the second best in quality thin gauge strip batches.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of hot rolling thin gauge strip method for coiling, which is characterized 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 outlet end 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, and into the runout table, the strip is run with First Speed；It is described defeated
The pinch roller of roller-way and the coiling machine is run respectively with second speed out, and the second speed is greater than or equal to first speed
Degree；First Speed is constant speed；
The strip stem enters the coiling machine and establishes tension, the strip Accelerating running, the speed of the runout table and
The speed of the pinch roller is identical as the speed of the strip；
When the tail part of band steel arrival mm finishing mill unit first presets rack, the strip runs slowly, until the strip
Tail portion goes out the mm finishing mill unit, and the speed of the speed of the runout table and the pinch roller is identical as the speed of the strip；
Wherein, the described first default rack refers to the end racks of mm finishing mill unit；
After the tail part of band steel goes out the mm finishing mill unit, the strip is run with third speed, the runout table and the folder
Roller is sent to 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 described in claim 1, which is characterized in that the strip stem goes out the essence
Milling train group, into the runout table；The pinch roller of the runout table and the coiling machine is run respectively with second speed, institute
It states second speed and is greater than or equal to the First Speed, specifically:
The strip stem goes out the mm finishing mill unit second and presets rack, and into runout table, the strip is transported with First Speed
The pinch roller of row, the runout table and the coiling machine is run with advanced rate for the second speed of 1.0-1.2, until the band
Steel stem enters the coiling machine and establishes tension；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 described in claim 1, which is characterized 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 roller are run with fourth speed, and described
Four speed are less than or equal to the third speed, specifically:
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
Roller is run with lagging rate as the fourth speed of 1.0-1.2, until the tail part of band steel enters the coiling machine；The lag rate is
Refer to that the third speed is 1.0-1.2 times of the fourth speed.
4. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that enter into the mm finishing mill unit
When mouth, the belt steel temperature is 1080-1140 DEG C；In the mm finishing mill unit out, the belt steel temperature is 840-890 DEG C；Institute
Stating First Speed is 9.5-11m/s.
5. hot rolling thin gauge strip method for coiling as claimed in claim 4, which is characterized in that described in the strip stem enters
Coiling machine establishes tension, the strip Accelerating running, specifically:
The strip stem enters the coiling machine and establishes tension, and the strip is the acceleration of 0.02-0.3m/s2 with acceleration
Accelerating running.
6. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that the method also includes:
The top of transition plates between the coiling machine is increased 10-15 millimeters.
7. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that the method also includes:
The flipper guide pressure and width surplus of the coiling machine are controlled, when the steel strip thickness is greater than 2 millimeters, the flipper guide pressure
Power is set as 20-40 kilograms；When the steel strip thickness is less than or equal to 2 millimeters, the flipper guide pressure is set as 10-20 kilograms；In
Before the strip stem enters the flipper guide, the width surplus is set as 70-100 millimeters；Enter institute in the strip stem
After stating flipper guide, when the steel strip thickness is greater than 2 millimeters, the width surplus is set as 30-35 millimeters, and the steel strip thickness is less than
Or when being equal to 2 millimeters, the width surplus is set as 35-40 millimeters.
8. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that the method also includes:
The strip stem is not cooling by water, so that the strip stem does not have water resistance；
Except the rest part of strip stem is using dispersion cooling, to reduce the water resistance of the strip operation.
9. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that the method also includes:
The numerical bias of the actual value and setting value that adjust the side guide plate of recoiling machine opening degree and centering is less than or equal to 2 millis
Rice；
Adjust the unilateral pressure of the pinch roller, adjusting range ± 10 kilogram.
10. hot rolling thin gauge strip method for coiling as described in claim 1, which is characterized in that the method also includes:
It limits the tail part of band steel and throws 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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| CN201710616523.2A CN107199246B (en) | 2017-07-26 | 2017-07-26 | Hot rolling thin gauge strip method for coiling |
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| CN107199246B true CN107199246B (en) | 2019-10-29 |
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| CN113798331A (en) * | 2021-09-15 | 2021-12-17 | 山西太钢不锈钢股份有限公司 | Thin-specification strip steel or silicon steel tail coiling control process |
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| CN103170525A (en) * | 2011-12-20 | 2013-06-26 | 攀钢集团攀枝花钢钒有限公司 | Hot continuous rolled titanium tape reeling method |
| CN103878178A (en) * | 2014-03-04 | 2014-06-25 | 河北钢铁股份有限公司唐山分公司 | Method for producing ultrathin hot-rolled coils from sheet billets by continuous casting and rolling |
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| CN111940542A (en) * | 2020-07-10 | 2020-11-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for coiling strip steel |
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