CN107900100A - A kind of cold rolling continuous machine applied to high-strength steel opens car method - Google Patents
A kind of cold rolling continuous machine applied to high-strength steel opens car method Download PDFInfo
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- CN107900100A CN107900100A CN201710998364.7A CN201710998364A CN107900100A CN 107900100 A CN107900100 A CN 107900100A CN 201710998364 A CN201710998364 A CN 201710998364A CN 107900100 A CN107900100 A CN 107900100A
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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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- 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
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
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Abstract
Car method is opened the embodiment of the invention discloses a kind of cold rolling continuous machine applied to high-strength steel, this method includes：The outlet of the cold continuous rolling is built and is opened；The roll-force of first rack, second rack, the 3rd rack, the 4th rack and the 5th rack is adjusted to respective preset value respectively；The entrance of the cold continuous rolling is built and is opened, and starts the cold continuous rolling；Adjust the hydraulic cylinder tilting value between each rack；When the tension value of each rack tends towards stability, judge whether the thickness of the high-strength steel of the 5th rack outlet and the difference of target thickness are more than predetermined deviation value, if the thickness of the high-strength steel and the difference of target thickness are more than predetermined deviation value, the first rack is then adjusted to the roll-force of the 4th rack, the difference is less than predetermined deviation value；The cold continuous rolling is carried out to the production of high-strength steel according to pre-set velocity.The present invention solves has the technical problem for opening car failure since roll-force is difficult to control in the prior art.
Description
Technical field
The present invention relates to the control technology field of cold rolling continuous machine, more particularly to a kind of cold rolling continuous applied to high-strength steel of method
Machine opens car method.
Background technology
Since high-strength steel has high intensity and certain formability, it is widely used in automobile manufacturing field.It is domestic each
Iron and steel enterprise of family meets the needs of automaker all in Devoting Major Efforts To Developing high-intensity band steel, particularly the height of more than DP780
Qiang Gang, the steel grade yield strength is high, and the maximum unit roll-force of each rack reaches 19Kn/mm.
At present, in the production of the high-strength steel of more than DP780, since the roll-force of high-strength steel is close to limiting value, easily make
Into rolling sideslip, additionally due to the plate shape thickness control difficulty of high-strength steel is big, phenomena such as broken belt easily occurs for when dynamic variable specification,
When breaking down shutdown or broken belt occurring, milling train is again started up extremely difficult.
It follows that there is the technical problem for opening car failure since roll-force is difficult to control in the prior art.
The content of the invention
A kind of cold rolling continuous machine applied to high-strength steel of offer of the embodiment of the present invention opens car method, to improve the prior art
In due to roll-force is difficult to control and in the presence of open car failure technical problem.
What the embodiment of the present application provided a kind of cold rolling continuous machine applied to high-strength steel opens car method, the cold rolling continuous machine bag
The first rack, the second rack, the 3rd rack, the 4th rack and the 5th rack are included, the described method includes：
The outlet of the cold continuous rolling is built and is opened；
Respectively by first rack, second rack, the 3rd rack, the 4th rack and the 5th machine
The roll-force of frame is adjusted to respective preset value；
The entrance of the cold continuous rolling is built and is opened, and starts the cold continuous rolling；
Adjust first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, tension variation between each rack is controlled within setting range；
Monitor first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Respective tension value, when the tension value of each rack tends towards stability, judges the thickness of the high-strength steel of the 5th rack outlet
Whether it is more than predetermined deviation value with the difference of target thickness, if the difference of the thickness of the high-strength steel and target thickness is more than in advance
If deviation, then first rack, second rack, the 3rd rack, the roll-force of the 4th rack are adjusted, is made
The deviation is less than predetermined deviation value；
The cold continuous rolling is carried out to the production of high-strength steel according to pre-set velocity.
Optionally, built in the outlet by the cold continuous rolling after opening, the method further includes：
Whether the state by the mandrel for monitoring the cold continuous rolling, judge that outlet is built to open and succeed.
Optionally, built in the entrance by the cold continuous rolling, and before starting the cold continuous rolling, the method
Further include：
Adjust first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, the dip deviation of the cold continuous rolling is maintained in setting range.
Optionally, in the adjustment first rack, second rack, the 3rd rack, the 4th rack
Hydraulic cylinder tilting value between the 5th rack, makes tension variation between each rack control within setting range it
Afterwards, the method further includes：
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the actual rolling force deviation value of each rack is less than 500kn, wherein, the actual rolling force deviation value
The difference of roll-force between the fore side and driving side of the cold continuous rolling；
If actual rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjusts rolling for each rack
Power processed.
Optionally, in the monitoring first rack, second rack, the 3rd rack, the 4th rack
Before the respective tension value of the 5th rack, the method further includes：
Adjust the bending roller force of each rack.
Optionally, the monitoring first rack, second rack, the 3rd rack, the 4th rack and
The respective tension value of 5th rack, including：
Make first rack, second rack, the 3rd rack, the 4th rack and the 5th rack each
From tension force actual value and setting value between deviation be no more than 10%.
Optionally, if the difference of the thickness of the high-strength steel and target thickness is more than predetermined deviation value, adjust
First rack, second rack, the 3rd rack, the roll-force of the 4th rack, are less than the difference pre-
If deviation, including：
According to the 3rd rack, the second rack, the first rack, the order of the 4th rack, roll-force is adjusted.
Optionally, the adjustment amount of the adjustment roll-force rolls the difference of force value for roll-force upper limit value with reality, wherein, institute
It is 30000kn to state roll-force upper limit value.
Optionally, the pre-set velocity is 45mpm.
Optionally, after the production according to pre-set velocity progress high-strength steel by the cold continuous rolling, the method
Further include：
The speed of the cold continuous rolling is monitored, when the speed of the cold continuous rolling is more than 60mpm, enables each rack
Automatic thickness control function.
The one or more technical solutions provided in the embodiment of the present application, have at least the following technical effects or advantages：
Cold rolling continuous machine provided by the embodiments of the present application applied to high-strength steel opens car method, first respectively by the first machine
Frame, the second rack, the 3rd rack, the roll-force of the 4th rack and the 5th rack are adjusted to respective preset value, restart cold company
Milling train, and tilted by adjusting the hydraulic cylinder between the first rack, the second rack, the 3rd rack, the 4th rack and the 5th rack
Value, makes the tension variation between each rack control within setting range, then by monitoring the tension value of each rack, when
When the tension value of each rack tends towards stability, pass through the thickness of the high-strength steel that judges the 5th rack outlet and target thickness
Whether difference is more than predetermined deviation value, so as to adjust the first rack, the second rack, the 3rd rack, the roll-force of the 4th rack, makes
The difference is less than predetermined deviation value.Since the method for the present invention is by the additional roll-force for adjusting first to fourth rack, and
And by the control of the difference of the exit thickness of the 5th rack and target thickness within the scope of predetermined deviation value, due to just starting
When, the AGC (automatic thickness control) of the 5th rack does not come into operation, so the exit thickness of the 5th rack does not reach target thickness
Degree, and after interstand tension is stablized, first to fourth rack can automatically switch to AGC control models, and the 5th rack at this time
Exit thickness and target thickness difference already less than predetermined deviation value, automatic thickness controls the rolling for being assigned to the 4th rack
Power can reduce, thus for high-strength steel, roll-force has obtained preferable control, is not in roll-force overrun condition, and
The thickness of the high-strength steel of 5th rack outlet can be rapidly achieved desired value, so as to save the production time, improve and open car
Success rate.Improve and there is the technical problem for opening car failure since roll-force is difficult to control in the prior art.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only the embodiment of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to the attached drawing of offer other
Attached drawing.
The flow for opening car method of a kind of cold rolling continuous machine applied to high-strength steel in a kind of preferred embodiment of Fig. 1 present invention
Figure.
Embodiment
A kind of cold rolling continuous machine applied to high-strength steel of offer of the embodiment of the present invention opens car method, to improve the prior art
In due to roll-force is difficult to control and in the presence of open car failure technical problem.
In order to solve above-mentioned technical problem existing in the prior art, the overall think of of technical solution provided by the embodiments of the present application
Road is as follows：
The roll-force of each rack is adjusted to setting value first, then adjusts rolling for first to fourth rack by additional
Power processed, and by the control of the difference of the exit thickness of the 5th rack and target thickness within the scope of predetermined deviation value, due to firm
During startup, the AGC (automatic thickness control) of the 5th rack does not come into operation, so the exit thickness of the 5th rack does not reach target
Thickness, and after interstand tension is stablized, first to fourth rack can automatically switch to AGC control models, and the 5th machine at this time
The exit thickness of frame and the difference of target thickness are assigned to rolling for the 4th rack already less than predetermined deviation value, automatic thickness control
Power processed can reduce, thus for high-strength steel, roll-force has obtained preferable control, is not in roll-force overrun condition,
And the 5th the thickness of high-strength steel of rack outlet can be rapidly achieved desired value, so as to save the production time, improve and open car
Success rate.Improve and there is the technical problem for opening car failure since roll-force is difficult to control in the prior art.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
State technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the present invention
The detailed description of technical solution, rather than the restriction to technical solution of the present invention, in the case where there is no conflict, the present invention are implemented
Technical characteristic in example and embodiment can be mutually combined.
In the present embodiment, there is provided a kind of cold rolling continuous machine applied to high-strength steel opens car method, refers to Fig. 1, should
Method includes：
Step S101：The outlet of the cold continuous rolling is built and is opened.
Step S102：Respectively by first rack, second rack, the 3rd rack, the 4th rack and
The roll-force of 5th rack is adjusted to respective preset value.
Specifically, the roll-force of each rack can be adjusted to by preset value by programming, wherein preset value can
To be configured according to actual conditions.
Step S103：The entrance of the cold continuous rolling is built and is opened, and starts the cold continuous rolling.
Specifically, after the roll-force of each rack is tentatively set, tension force is established in the entrance of the cold continuous rolling, and
Car pattern, which is opened, according to raw material plate starts the cold continuous rolling.
Step S104：Adjust first rack, second rack, the 3rd rack, the 4th rack and institute
The hydraulic cylinder tilting value between the 5th rack is stated, the tension variation between each rack is controlled within setting range.
In specific implementation process, the deviation of the tension value of each rack is controlled by adjusting the tilting value of hydraulic cylinder
Control is in setting range, such as can be 3Mpa, 2Mpa etc..
Step S105：Monitor first rack, second rack, the 3rd rack, the 4th rack and institute
The 5th respective tension value of rack is stated, when the tension value of each rack tends towards stability, judges the height of the 5th rack outlet
Whether the strong thickness of steel and the difference of target thickness are more than predetermined deviation value, if the thickness of the high-strength steel and target thickness
Difference is more than predetermined deviation value, then adjusts first rack, second rack, the 3rd rack, the 4th rack
Roll-force, the deviation is less than predetermined deviation value.
Specifically, above-mentioned predetermined deviation value can be adjusted according to actual requirement, such as can be 300 μm, 200 μm
Or 100 μm.
Step S106：The cold continuous rolling is carried out to the production of high-strength steel according to pre-set velocity.
In order to avoid mandrel dallies, built in the outlet by the cold continuous rolling after opening, the method further includes：
Whether the state by the mandrel for monitoring the cold continuous rolling, judge that outlet is built to open and succeed.
In specific implementation process, high strength band steel is rolled onto on mandrel, is then established outlet tension force, can be passed through after building
Whether observation outlet mandrel state succeeds to judge that outlet is built to open, such as mandrel then shows that outlet does not have also in idling conditions
Build and be turned into work(, need strap rolling-assisting device to be crimped again after rising at this time.
In order to ensure the stability of each rack of cold rolling continuous machine, build and open in the entrance by the cold continuous rolling, and open
Before moving the cold continuous rolling, the method further includes：
Adjust first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, the dip deviation of the cold continuous rolling is maintained in setting range.
In order to ensure stability that cold rolling continuous machine starts, in the adjustment first rack, second rack, described
Hydraulic cylinder tilting value between 3rd rack, the 4th rack and the 5th rack, makes the tension force between each rack inclined
After difference is controlled within setting range, the method further includes：
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the actual rolling force deviation value of each rack is less than 500kn, wherein, the actual rolling force deviation value
The difference of roll-force between the fore side and driving side of the cold continuous rolling；
If actual rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjusts rolling for each rack
Power processed.
In specific implementation process, by judging the difference of the roll-force between fore side and driving side, so as to adjust again
The roll-force of whole each rack, due to this application involves high-strength steel yield strength it is high, such as DP780, DP980 etc., respectively
The maximum unit roll-force of rack reaches 19Kn/mm, thus roll-force can be close to limiting value during production, it is therefore desirable to rationally control
The roll-force of each rack.
In order to improve the flatness of high-strength steel, in the monitoring first rack, second rack, the 3rd machine
Before frame, the 4th rack and the respective tension value of the 5th rack, the method further includes：
Adjust the bending roller force of each rack.
In the method that the application provides, first rack, second rack, the 3rd rack, described is monitored
4th rack and the respective tension value of the 5th rack, including：
Make first rack, second rack, the 3rd rack, the 4th rack and the 5th rack each
From tension force actual value and setting value between deviation be no more than 10%.
In specific implementation process, the tension value of each rack often changes, in order to ensure to produce high-strength steel
Stability, it is necessary to monitor the actual tension value of each rack, and need to protect the deviation of actual tension value and setting value in real time
Hold in smaller range.
In the method that the application provides, if the difference of the thickness of the high-strength steel and target thickness is more than predetermined deviation
Value, then adjust first rack, second rack, the 3rd rack, the roll-force of the 4th rack, makes described inclined
Difference is less than predetermined deviation value, including：
According to the 3rd rack, the second rack, the first rack, the order of the 4th rack, roll-force is adjusted.
In specific implementation process, when the thickness of milling train outlet high-strength steel does not reach target thickness, then produce
High-strength steel is unqualified, it is therefore desirable to the roll-force of each rack is adjusted again, and according to the 3rd rack, the second rack, the first machine
The order of frame, the 4th rack, adjusts roll-force, so that adjustment space is reserved to the 4th rack, easy to automatic quick adjustment, so that
Preferably exit thickness can be adjusted, and cause the difference of thickness to be less than predetermined deviation value.
In the method that the application provides, the adjustment amount of the adjustment roll-force is roll-force upper limit value and actual roll-force
The difference of value, wherein, the roll-force upper limit value is 30000kn, so as to quickly eliminate between actual (real) thickness and target thickness
Thickness difference.
In the method that the application provides, the pre-set velocity is 45mpm.
In specific implementation process, the speed setting value of main transmission makes speed and addition speed two by main in the operation of rolling
Part forms, and wherein addition speed is provided respectively by two modules of AGC and tension force, but second to the in steel start-up course
The AGC of four racks has not been put to, thus AGC output addition speed it is constant be zero.Pre-set velocity is set as 45mpm, that is, is opened
Vehicle speed, so as to be conducive to low speed tension adjustment.The control mode of tension force is changed into speed control mode.Preferably,
Tension force can be put into chain condition threshold speed and be revised as 12mpm, and existing speed adjusts the critical value of tension force
For 50mpm.Since raw material plate plays the problem of vehicle speed is set as 45mpm, be able to can not so be triggered there are speed control tension force, this
Application is conducive to tension force closed loop and puts into and realize that as early as possible raw material plate plays car by the way that critical speed is revised as 12mpm
Tension force function.
In the method that the application provides, in the production that the cold continuous rolling is carried out to high-strength steel according to pre-set velocity
Afterwards, the method further includes：
The speed of the cold continuous rolling is monitored, when the speed of the cold continuous rolling is more than 60mpm, enables each rack
Automatic thickness control function.
In specific implementation process, as rolling mill speed ＞ 60mpm, the AGC functions of each rack are all put into.It is and firm
Start milling train under 45mpm speed operating statuses, the AGC of the 5th rack of milling train does not come into operation, so the actual (real) thickness of outlet
Target thickness is not reached.After interstand tension is stablized, Increased Speed of Rolling Mill to 60mpm, other racks (first to fourth rack) are certainly
It is dynamic to be switched to AGC control models, and the thickness of outlet of the 5th rack and the difference of target thickness are inclined already less than default at this time
Difference, so automatic thickness control is assigned to the roll-force of the 4th rack and can reduce, because without roll-force overrun condition,
And the 5th the thickness of rack outlet can be rapidly achieved desired value.
The one or more technical solutions provided in the embodiment of the present application, have at least the following technical effects or advantages：
Cold rolling continuous machine provided by the embodiments of the present application applied to high-strength steel opens car method, first respectively by the first machine
Frame, the second rack, the 3rd rack, the roll-force of the 4th rack and the 5th rack are adjusted to respective preset value, restart cold company
Milling train, and tilted by adjusting the hydraulic cylinder between the first rack, the second rack, the 3rd rack, the 4th rack and the 5th rack
Value, makes the tension variation between each rack control within setting range, then by monitoring the tension value of each rack, when
When the tension value of each rack tends towards stability, pass through the thickness of the high-strength steel that judges the 5th rack outlet and target thickness
Whether difference is more than predetermined deviation value, so as to adjust the first rack, the second rack, the 3rd rack, the roll-force of the 4th rack, makes
The difference is less than predetermined deviation value.Since the method for the present invention is by the additional roll-force for adjusting first to fourth rack, and
And by the difference of the exit thickness of the 5th rack and target thickness control within the scope of predetermined deviation value, due to just start when,
The AGC (automatic thickness control) of 5th rack does not come into operation, so the exit thickness of the 5th rack does not reach target thickness, and
After interstand tension is stablized, first to fourth rack can automatically switch to AGC control models, and the outlet of the 5th rack at this time
Already less than predetermined deviation value, the roll-force that automatic thickness control is assigned to the 4th rack can drop the difference of thickness and target thickness
It is low, thus for high-strength steel, roll-force has obtained preferable control, is not in roll-force overrun condition, and the 5th machine
The thickness of the high-strength steel of frame outlet can be rapidly achieved desired value, so as to save the production time, improve the success rate for opening car.
Improve and there is the technical problem for opening car failure since roll-force is difficult to control in the prior art.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
1. a kind of cold rolling continuous machine applied to high-strength steel opens car method, the cold rolling continuous machine include the first rack, the second rack,
3rd rack, the 4th rack and the 5th rack, the described method includes：
The outlet of the cold continuous rolling is built and is opened；
Respectively by first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Roll-force is adjusted to respective preset value；
The entrance of the cold continuous rolling is built and is opened, and starts the cold continuous rolling；
Adjust between first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Hydraulic cylinder tilting value, tension variation between each rack is controlled within setting range；
Monitor first rack, second rack, the 3rd rack, the 4th rack and the 5th rack each
Tension value, when the tension value of each rack tends towards stability, judge the thickness and mesh of the high-strength steel of the 5th rack outlet
Whether the difference of mark thickness is more than predetermined deviation value, if the difference of the thickness of the high-strength steel and target thickness is more than described pre-
If deviation, then first rack, second rack, the 3rd rack, the roll-force of the 4th rack are adjusted, is made
The difference is less than the predetermined deviation value；
The cold continuous rolling is carried out to the production of high-strength steel according to pre-set velocity.
2. the method as described in claim 1, it is characterised in that built in the outlet by the cold continuous rolling after opening, institute
The method of stating further includes：
Whether the state by the mandrel for monitoring the cold continuous rolling, judge that outlet is built to open and succeed.
3. the method as described in claim 1, it is characterised in that build and open in the entrance by the cold continuous rolling, and start
Before the cold continuous rolling, the method further includes：
Adjust between first rack, second rack, the 3rd rack, the 4th rack and the 5th rack
Hydraulic cylinder tilting value, the dip deviation of the cold continuous rolling is maintained in setting range.
4. the method as described in claim 1, it is characterised in that in the adjustment first rack, second rack, institute
The hydraulic cylinder tilting value between the 3rd rack, the 4th rack and the 5th rack is stated, makes the tension force between each rack
After deviation is controlled within setting range, the method further includes：
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the actual rolling force deviation value of each rack is less than 500kn, wherein, the actual rolling force deviation value is institute
State the difference of the roll-force between the fore side of cold continuous rolling and driving side；
If actual rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjusts the rolling of each rack
Power.
5. the method as described in claim 1, it is characterised in that in the monitoring first rack, second rack, institute
Before stating the 3rd rack, the 4th rack and the respective tension value of the 5th rack, the method further includes：
Adjust the bending roller force of each rack.
6. the method as described in claim 1, it is characterised in that the monitoring first rack, second rack, described
3rd rack, the 4th rack and the respective tension value of the 5th rack, including：
Make first rack, second rack, the 3rd rack, the 4th rack and the 5th rack respective
Deviation between the actual value and setting value of tension force is no more than 10%.
7. the method as described in claim 1, it is characterised in that if the difference of the thickness of the high-strength steel and target thickness
Value is more than predetermined deviation value, then adjusts first rack, second rack, the 3rd rack, the 4th rack
Roll-force, makes the difference be less than the predetermined deviation value, including：
According to the 3rd rack, the second rack, the first rack, the order of the 4th rack, roll-force is adjusted.
8. the method for claim 7, it is characterised in that it is described adjustment roll-force adjustment amount for roll-force upper limit value with
The difference of actual rolling force value, wherein, the roll-force upper limit value is 30000kn.
9. the method as described in claim 1, it is characterised in that the pre-set velocity is 45mpm.
10. the method as described in claim 1, it is characterised in that carry out the cold continuous rolling according to pre-set velocity described
After the production of high-strength steel, the method further includes：
The speed of the cold continuous rolling is monitored, when the speed of the cold continuous rolling is more than 60mpm, enables the automatic of each rack
Thickness control function.
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| CN201710998364.7A CN107900100B (en) | 2017-10-24 | 2017-10-24 | A kind of cold continuous rolling applied to high-strength steel opens Che Fangfa |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894482A (en) * | 2019-02-28 | 2019-06-18 | 首钢智新迁安电磁材料有限公司 | A kind of cold continuous rolling Starting control optimization method and device |
| CN110202009A (en) * | 2019-06-11 | 2019-09-06 | 首钢京唐钢铁联合有限责任公司 | A kind of milling train vehicle method for controlling thickness and device |
| CN111085543A (en) * | 2018-10-23 | 2020-05-01 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
| CN112718858A (en) * | 2020-12-15 | 2021-04-30 | 首钢智新迁安电磁材料有限公司 | Starting control method, device and system for raw material plate |
| CN113680827A (en) * | 2021-08-17 | 2021-11-23 | 北京首钢冷轧薄板有限公司 | Method for lifting cold-rolled thin high-reduction-rate high-strength steel after strip breakage |
| CN114682631A (en) * | 2022-03-29 | 2022-07-01 | 北京首钢冷轧薄板有限公司 | Method for adjusting current load of cold continuous rolling mill frame |
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| CN111085543A (en) * | 2018-10-23 | 2020-05-01 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
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| CN114700373A (en) * | 2022-03-10 | 2022-07-05 | 首钢京唐钢铁联合有限责任公司 | Starting tension control method for raw material plate and related equipment |
| CN114682631A (en) * | 2022-03-29 | 2022-07-01 | 北京首钢冷轧薄板有限公司 | Method for adjusting current load of cold continuous rolling mill frame |
| CN114682631B (en) * | 2022-03-29 | 2023-11-28 | 北京首钢冷轧薄板有限公司 | Method for adjusting current load of cold tandem mill frame |
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