CN107900100B - Starting method applied to high-strength steel cold continuous rolling mill - Google Patents
Starting method applied to high-strength steel cold continuous rolling mill Download PDFInfo
- Publication number
- CN107900100B CN107900100B CN201710998364.7A CN201710998364A CN107900100B CN 107900100 B CN107900100 B CN 107900100B CN 201710998364 A CN201710998364 A CN 201710998364A CN 107900100 B CN107900100 B CN 107900100B
- Authority
- CN
- China
- Prior art keywords
- rack
- value
- force
- continuous rolling
- cold continuous
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 84
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
The embodiment of the invention discloses a starting method applied to a cold rolling continuous machine of high-strength steel, which comprises the following steps: building an outlet of the cold continuous rolling mill; respectively adjusting the rolling forces of the first stand, the second stand, the third stand, the fourth stand and the fifth stand to respective preset values; building an inlet of the cold continuous rolling mill, and starting the cold continuous rolling mill; adjusting the inclination value of the hydraulic cylinder between the frames; when the tension value of each rack tends to be stable, judging whether the difference value between the thickness of the high-strength steel at the outlet of the fifth rack and the target thickness is larger than a preset deviation value or not, and if the difference value between the thickness of the high-strength steel and the target thickness is larger than the preset deviation value, adjusting the rolling force of the first rack to the fourth rack to enable the difference value to be smaller than the preset deviation value; and (3) producing the high-strength steel by the cold continuous rolling mill according to a preset speed. The invention solves the technical problem of failure in starting due to difficulty in controlling the rolling force in the prior art.
Description
Technical field
The present invention relates to a kind of cold continuous rollings applied to high-strength steel of the control technology field of cold continuous rolling more particularly to method
Machine opens Che Fangfa.
Background technique
Since high-strength steel has high-intensitive and certain formability, it is therefore widely used in automobile manufacturing field.It is domestic each
Iron and steel enterprise, family is all the needs of Devoting Major Efforts To Developing high-intensity band steel is to meet automaker, the especially height of DP780 or more
Qiang Gang, the steel grade yield strength is high, and the maximum unit roll-force of each rack reaches 19Kn/mm.
Currently, since the roll-force of high-strength steel is close to limiting value, being easy to make in the production of the high-strength steel of DP780 or more
At rolling sideslip, additionally due to the plate shape thickness control difficulty of high-strength steel is big, phenomena such as when dynamic variable specification is easy to happen disconnected band,
When breaking down shutdown or disconnected band occurring, milling train is again started up extremely difficult.
It follows that there is technical issues that open vehicle since roll-force is difficult to control in the prior art.
Summary of the invention
What the embodiment of the present invention provided a kind of cold continuous rolling applied to high-strength steel opens Che Fangfa, to improve the prior art
In due to roll-force be difficult to control and there is technical issues that open vehicle.
What the embodiment of the present application provided a kind of cold continuous rolling applied to high-strength steel opens Che Fangfa, the cold continuous rolling packet
Include the first rack, the second rack, third rack, the 4th rack and the 5th rack, which comprises
The outlet of the cold continuous rolling is built and is opened；
Respectively by first rack, second rack, the third 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 third rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, control tension variation between each rack within setting range；
Monitor first rack, second rack, the third rack, the 4th rack and the 5th rack
Respective tension value judges the thickness of the high-strength steel of the 5th rack outlet when the tension value of each rack tends towards stability
Whether it is greater 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 greater than in advance
If deviation, then the roll-force of first rack, second rack, the third rack, the 4th rack is 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, after the outlet by the cold continuous rolling is built and opened, the method also includes:
By monitoring the state of the mandrel of the cold continuous rolling, judges that outlet is built to open and whether succeed.
Optionally, it is 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 third rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, make the cold continuous rolling dip deviation keep within the set range.
Optionally, in the adjustment first rack, second rack, the third 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 also includes:
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the practical rolling force deviation value of each rack is less than 500kn, wherein the practical rolling force deviation value
The difference of roll-force between the fore side and driving side of the cold continuous rolling；
If practical rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjust rolling for each rack
Power processed.
Optionally, in the monitoring first rack, second rack, the third rack, the 4th rack
Before the respective tension value of the 5th rack, the method also includes:
Adjust the bending roller force of each rack.
Optionally, the monitoring first rack, second rack, the third rack, the 4th rack and
The respective tension value of 5th rack, comprising:
Keep first rack, second rack, the third rack, the 4th rack and the 5th rack each
From tension actual value and setting value between deviation be no more than 10%.
Optionally, it if the difference of the thickness of the high-strength steel and target thickness is greater than predetermined deviation value, adjusts
First rack, second rack, the third rack, the roll-force of the 4th rack are less than the difference pre-
If deviation, comprising:
According to third rack, the second rack, the first rack, the sequence of the 4th rack, roll-force is adjusted.
Optionally, the adjustment amount of the adjustment roll-force is the difference of roll-force upper limit value and practical rolling force value, wherein institute
Stating roll-force upper limit value is 30000kn.
Optionally, the pre-set velocity is 45mpm.
Optionally, after the production that the cold continuous rolling is carried out to high-strength steel according to pre-set velocity, the method
Further include:
The speed for monitoring the cold continuous rolling enables each rack when the speed of the cold continuous rolling is greater than 60mpm
Automatic thickness control function.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
Cold continuous rolling provided by the embodiments of the present application applied to high-strength steel opens Che Fangfa, first respectively by the first machine
Frame, the second rack, third rack, the roll-force of the 4th rack and the 5th rack are adjusted to respective preset value, restart cold company
Milling train, and by adjusting the hydraulic cylinder inclination between the first rack, the second rack, third rack, the 4th rack and the 5th rack
Value controls the tension variation between each rack within setting range, then by monitoring the tension value of each rack, when
When the tension value of each rack tends towards stability, by the thickness and target thickness that judge the high-strength steel of the 5th rack outlet
Whether difference is greater than predetermined deviation value, so as to adjust the first rack, the second rack, third rack, the roll-force of the 4th rack, makes
The difference is less than predetermined deviation value.Since method of the invention is by the roll-force of first to fourth rack of additional adjustment, 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 target thickness is not achieved in the exit thickness of the 5th rack
Degree, and after interstand tension stabilization, first to fourth rack can automatically switch to AGC control model, 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, it is not in roll-force overrun condition that roll-force, which has obtained preferable control, and
The thickness of the high-strength steel of 5th rack outlet can be rapidly achieved target value, to save the production time, improve and open vehicle
Success rate.Improve there is technical issues that open vehicle since roll-force is difficult to control in the prior art.
Detailed description of the invention
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, the accompanying drawings in the following description is 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.
A kind of process for opening vehicle method of the cold continuous rolling applied to high-strength steel in a kind of preferred embodiment of Fig. 1 present invention
Figure.
Specific embodiment
What the embodiment of the present invention provided a kind of cold continuous rolling applied to high-strength steel opens Che Fangfa, to improve the prior art
In due to roll-force be difficult to control and there is technical issues that open vehicle.
In order to solve above-mentioned technical problem of the existing technology, the overall of technical solution provided by the embodiments of the present application is thought
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 rigid
When starting, the AGC (automatic thickness control) of the 5th rack does not come into operation, so target is not achieved in the exit thickness of the 5th rack
Thickness, and after interstand tension is stablized, first to fourth rack can automatically switch to AGC control model, and the 5th machine at this time
Already less than predetermined deviation value, automatic thickness control is assigned to rolling for the 4th rack for the exit thickness of frame and the difference of target thickness
Power processed can reduce, thus for high-strength steel, it is not in roll-force overrun condition that roll-force, which has obtained preferable control,
And the 5th the thickness of high-strength steel of rack outlet can be rapidly achieved target value, to save the production time, improve and open vehicle
Success rate.Improve there is technical issues that open vehicle 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
It states 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 absence of conflict, the present invention are implemented
Technical characteristic in example and embodiment can be combined with each other.
In the present embodiment, provide a kind of cold continuous rolling applied to high-strength steel opens Che Fangfa, referring to Figure 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 third 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 the actual situation.
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 that each rack is tentatively set, tension is established in the entrance of the cold continuous rolling, and
Vehicle mode, which is opened, according to raw material plate starts the cold continuous rolling.
Step S104: adjustment first rack, second rack, the third rack, the 4th rack and institute
The hydraulic cylinder tilting value between the 5th rack is stated, controls the tension variation between each rack within setting range.
In the specific implementation process, the deviation of the tension value of each rack is controlled by adjusting the tilting value of hydraulic cylinder
Control within the set range, such as can be 3Mpa, 2Mpa etc..
Step S105: monitoring first rack, second rack, the third 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 greater than predetermined deviation value, if the thickness of the high-strength steel and target thickness
Difference is greater than predetermined deviation value, then adjusts first rack, second rack, the third rack, the 4th rack
Roll-force, make the deviation be 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 idle running, after the outlet by the cold continuous rolling is built and is opened, the method also includes:
By monitoring the state of the mandrel of the cold continuous rolling, judges that outlet is built to open and whether succeed.
In the specific implementation process, high strength band steel is rolled on mandrel, is then established outlet tension, 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
Zhang Chenggong is built, is crimped again after needing strap rolling-assisting device to rise at this time.
In order to guarantee the stability of each rack of cold continuous rolling, builds and open in the entrance by the cold continuous rolling, and open
Before moving the cold continuous rolling, the method also includes:
Adjust first rack, second rack, the third rack, the 4th rack and the 5th rack
Between hydraulic cylinder tilting value, make the cold continuous rolling dip deviation keep within the set range.
In order to guarantee the stability of cold continuous rolling starting, in the adjustment first rack, second rack, described
Hydraulic cylinder tilting value between third rack, the 4th rack and the 5th rack, keeps the tension between each rack inclined
After difference controls within setting range, the method also includes:
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the practical rolling force deviation value of each rack is less than 500kn, wherein the practical rolling force deviation value
The difference of roll-force between the fore side and driving side of the cold continuous rolling；
If practical rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjust rolling for each rack
Power processed.
In the specific implementation process, by judging the difference of the roll-force between fore side and driving side, 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 when 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 third machine
Before frame, the 4th rack and the respective tension value of the 5th rack, the method also includes:
Adjust the bending roller force of each rack.
In method provided by the present application, first rack, second rack, the third rack, described is monitored
4th rack and the respective tension value of the 5th rack, comprising:
Keep first rack, second rack, the third rack, the 4th rack and the 5th rack each
From tension actual value and setting value between deviation be no more than 10%.
In the specific implementation process, the tension value of each rack often changes, in order to guarantee to produce high-strength steel
Stability, needs the actual tension value of each rack of real-time monitoring, and needs to protect the deviation of actual tension value and setting value
It holds in smaller range.
In method provided by the present application, if the difference of the thickness of the high-strength steel and target thickness is greater than predetermined deviation
Value, then adjust the roll-force of first rack, second rack, the third rack, the 4th rack, makes described inclined
Difference is less than predetermined deviation value, comprising:
According to third rack, the second rack, the first rack, the sequence of the 4th rack, roll-force is adjusted.
In the specific implementation process, it when target thickness is not achieved in the thickness of milling train outlet high-strength steel, then produces
High-strength steel is unqualified, it is therefore desirable to adjust the roll-force of each rack again, and according to third rack, the second rack, the first machine
The sequence of frame, the 4th rack adjusts roll-force, so that adjustment space is reserved to the 4th rack, convenient for automatic quickly adjustment, thus
Preferably exit thickness can be adjusted, and the difference of thickness is made to be less than predetermined deviation value.
In method provided by the present application, the adjustment amount of the adjustment roll-force is roll-force upper limit value and practical 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 method provided by the present application, the pre-set velocity is 45mpm.
In the specific implementation process, the speed setting value of main transmission enables 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, to be conducive to low speed tension adjustment.The control mode of tension 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
For 50mpm.It is set as 45mpm since raw material plate plays vehicle speed, can there are problems that speed control tension can not trigger in this way, this
Application is conducive to tension force closed loop and puts into and realize that as early as possible raw material plate plays vehicle by the way that critical speed is revised as 12mpm
Tension force function.
In method provided by the present application, in the production that the cold continuous rolling is carried out to high-strength steel according to pre-set velocity
Later, the method also includes:
The speed for monitoring the cold continuous rolling enables each rack when the speed of the cold continuous rolling is greater than 60mpm
Automatic thickness control function.
In the specific implementation process, as rolling mill speed > 60mpm, the AGC function of each rack is all put into.And it is rigid
Start milling train under 45mpm speed operating status, 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 achieved.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 model, and the difference of the thickness and target thickness of the outlet of the 5th rack at this time is inclined already less than default
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 target value.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
Cold continuous rolling provided by the embodiments of the present application applied to high-strength steel opens Che Fangfa, first respectively by the first machine
Frame, the second rack, third rack, the roll-force of the 4th rack and the 5th rack are adjusted to respective preset value, restart cold company
Milling train, and by adjusting the hydraulic cylinder inclination between the first rack, the second rack, third rack, the 4th rack and the 5th rack
Value controls the tension variation between each rack within setting range, then by monitoring the tension value of each rack, when
When the tension value of each rack tends towards stability, by the thickness and target thickness that judge the high-strength steel of the 5th rack outlet
Whether difference is greater than predetermined deviation value, so as to adjust the first rack, the second rack, third rack, the roll-force of the 4th rack, makes
The difference is less than predetermined deviation value.Since method of the invention is by the roll-force of first to fourth rack of additional adjustment, 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, when due to just starting,
The AGC (automatic thickness control) of 5th rack does not come into operation, so target thickness is not achieved in the exit thickness of the 5th rack, and
After interstand tension is stablized, first to fourth rack can automatically switch to AGC control model, 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, it is not in roll-force overrun condition that roll-force, which has obtained preferable control, and the 5th machine
The thickness of the high-strength steel of frame outlet can be rapidly achieved target value, to save the production time, improve the success rate for opening vehicle.
Improve there is technical issues that open vehicle since roll-force is difficult to control in the prior art.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls 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
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of cold continuous rolling applied to high-strength steel opens Che Fangfa, the cold continuous rolling include the first rack, the second rack,
Third rack, the 4th rack and the 5th rack, which comprises
The outlet of the cold continuous rolling is built and is opened；
Respectively by first rack, second rack, the third 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；
It adjusts between first rack, second rack, the third rack, the 4th rack and the 5th rack
Hydraulic cylinder tilting value, control tension variation between each rack within setting range；
Monitor first rack, second rack, the third rack, the 4th rack and the 5th rack respectively
Tension value judge the thickness and mesh of the high-strength steel of the 5th rack outlet when the tension value of each rack tends towards stability
Whether the difference of mark thickness is greater than predetermined deviation value, if the difference of the thickness of the high-strength steel and target thickness is greater than described pre-
If deviation, then the roll-force of first rack, second rack, the third rack, the 4th rack is 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, which is characterized in that after the outlet by the cold continuous rolling is built and is opened, institute
State method further include:
By monitoring the state of the mandrel of the cold continuous rolling, judges that outlet is built to open and whether succeed.
3. the method as described in claim 1, which is characterized in that build and open in the entrance by the cold continuous rolling, and start
Before the cold continuous rolling, the method also includes:
It adjusts between first rack, second rack, the third rack, the 4th rack and the 5th rack
Hydraulic cylinder tilting value, make the cold continuous rolling dip deviation keep within the set range.
4. the method as described in claim 1, which is characterized in that in the adjustment first rack, second rack, institute
The hydraulic cylinder tilting value between third rack, the 4th rack and the 5th rack is stated, the tension between each rack is made
After deviation controls within setting range, the method also includes:
The tilting value of the hydraulic cylinder is adjusted within the scope of ± 0.3mm；
Judge whether the practical rolling force deviation value of each rack is less than 500kn, wherein the practical 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 practical rolling force deviation value is not less than 500kn, hydraulic cylinder is retracted, and readjust the rolling of each rack
Power.
5. the method as described in claim 1, which is characterized in that in the monitoring first rack, second rack, institute
Before stating third rack, the 4th rack and the respective tension value of the 5th rack, the method also includes:
Adjust the bending roller force of each rack.
6. the method as described in claim 1, which is characterized in that the monitoring first rack, second rack, described
Third rack, the 4th rack and the respective tension value of the 5th rack, comprising:
Keep first rack, second rack, the third rack, the 4th rack and the 5th rack respective
Deviation between the actual value and setting value of tension is no more than 10%.
7. the method as described in claim 1, which is characterized in that if the difference of the thickness of the high-strength steel and target thickness
Value is greater than predetermined deviation value, then adjusts first rack, second rack, the third rack, the 4th rack
Roll-force makes the difference be less than the predetermined deviation value, comprising:
According to third rack, the second rack, the first rack, the sequence of the 4th rack, roll-force is adjusted.
8. the method for claim 7, which is characterized in that it is described adjustment roll-force adjustment amount be roll-force upper limit value with
The difference of practical rolling force value, wherein the roll-force upper limit value is 30000kn.
9. the method as described in claim 1, which is characterized in that the pre-set velocity is 45mpm.
10. the method as described in claim 1, which is characterized in that carry out the cold continuous rolling according to pre-set velocity described
After the production of high-strength steel, the method also includes:
The speed for monitoring the cold continuous rolling enables the automatic of each rack when the speed of the cold continuous rolling is greater than 60mpm
Thickness control function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998364.7A CN107900100B (en) | 2017-10-24 | 2017-10-24 | Starting method applied to high-strength steel cold continuous rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998364.7A CN107900100B (en) | 2017-10-24 | 2017-10-24 | Starting method applied to high-strength steel cold continuous rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107900100A CN107900100A (en) | 2018-04-13 |
| CN107900100B true CN107900100B (en) | 2019-04-12 |
Family
ID=61841617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710998364.7A Active CN107900100B (en) | 2017-10-24 | 2017-10-24 | Starting method applied to high-strength steel cold continuous rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107900100B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085543B (en) * | 2018-10-23 | 2021-08-17 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
| CN109894482B (en) * | 2019-02-28 | 2020-08-21 | 首钢智新迁安电磁材料有限公司 | Cold continuous rolling mill start control optimization method and device |
| CN110202009B (en) * | 2019-06-11 | 2020-12-11 | 首钢京唐钢铁联合有限责任公司 | Rolling mill start thickness control method and device |
| CN112718858B (en) * | 2020-12-15 | 2022-05-17 | 首钢智新迁安电磁材料有限公司 | Starting control method, device and system for raw material plate |
| CN113680827B (en) * | 2021-08-17 | 2023-04-28 | 北京首钢冷轧薄板有限公司 | Method for starting cold-rolled thin high-strength steel with large rolling reduction after belt breakage |
| CN114700373B (en) * | 2022-03-10 | 2024-07-12 | 首钢京唐钢铁联合有限责任公司 | Method for controlling starting tension of raw material plate and related equipment |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177132A (en) * | 1997-09-04 | 1999-03-23 | Toshiba Corp | Reduction control device for rolling mill |
| CN101797588A (en) * | 2010-04-01 | 2010-08-11 | 中色科技股份有限公司 | Secondary control rolling force forecasting method of hot mill |
| CN101934290A (en) * | 2009-06-30 | 2011-01-05 | 上海宝信软件股份有限公司 | Load allocation adjusting method for stainless steel tandem cold rolling mill |
| JP2013111615A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | Method of conveying rolled stock and rolling apparatus |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
| CN105344712A (en) * | 2015-11-26 | 2016-02-24 | 首钢京唐钢铁联合有限责任公司 | Starting method for raw material plate of cold continuous rolling mill |
-
2017
- 2017-10-24 CN CN201710998364.7A patent/CN107900100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177132A (en) * | 1997-09-04 | 1999-03-23 | Toshiba Corp | Reduction control device for rolling mill |
| CN101934290A (en) * | 2009-06-30 | 2011-01-05 | 上海宝信软件股份有限公司 | Load allocation adjusting method for stainless steel tandem cold rolling mill |
| CN101797588A (en) * | 2010-04-01 | 2010-08-11 | 中色科技股份有限公司 | Secondary control rolling force forecasting method of hot mill |
| JP2013111615A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | Method of conveying rolled stock and rolling apparatus |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
| CN105344712A (en) * | 2015-11-26 | 2016-02-24 | 首钢京唐钢铁联合有限责任公司 | Starting method for raw material plate of cold continuous rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107900100A (en) | 2018-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107900100B (en) | Starting method applied to high-strength steel cold continuous rolling mill | |
| RU2434696C1 (en) | Method of producing steel strip | |
| CN107617647B (en) | Method for producing hot-rolled strip steel with thickness less than or equal to 1.2mm by continuous casting and rolling of sheet billet | |
| CN105344712B (en) | Starting method for raw material plate of cold continuous rolling mill | |
| CN107073534B (en) | For casting and rolling the method and casting rolling equipment of continuous casting blank material without a head | |
| KR101246074B1 (en) | Device for controlling or regulating a temperature | |
| CN110722000B (en) | Rolling method and device for high-strength steel | |
| EP2441538A1 (en) | Strand casting device with dynamic strand thickness reduction | |
| CN106475423B (en) | A kind of Minimal Tension threading control method of cold-rolled orientation silicon steel thin plate | |
| EP2627465A1 (en) | Energy- and yield-optimized method and plant for producing hot steel strip | |
| CN103949494A (en) | Control method for eliminating finishing surface contusion of hot-rolled strip steel | |
| WO2012032071A1 (en) | Method for producing steel strips by continuous rolling or semi-continuous rolling | |
| KR101581168B1 (en) | Method for adjusting a drive load for a plurality of drives of a mill train for rolling rolling stock, control and/or regulation device, storage medium, program code and rolling mill | |
| EP2086703A1 (en) | Method and control device for controlling the heat removal from a side plate of a mould | |
| EP2293889B1 (en) | Conti-mill train with integration/deintegration of roller frameworks in active operation | |
| JPH11500360A (en) | Method and apparatus for operating continuous casting apparatus | |
| CN102658292A (en) | Non-oriented electrical steel processing method | |
| CN113102504B (en) | Method and apparatus for producing flat metal products | |
| CN104084428B (en) | Subtract the uneven method thickened of sizing production On-line Control seamless steel pipe tube wall | |
| US9764367B2 (en) | Width-altering system for strip-shaped rolling rock | |
| EP2689863A1 (en) | Method of influencing the geometry of a milled good in a targeted manner | |
| EP2849898B1 (en) | Method for operating a steckel mill | |
| CN104858244A (en) | Loop control method capable of ensuring tension stability of strip steel processing line | |
| CN102601328B (en) | Multistep method for online adjusting width decrease of crystallizer rapidly | |
| CN107716559A (en) | A kind of control method for preventing twin pressure roller gateway tension variation excessive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |