CN116833233A - 1580 hot continuous rolling finishing mill working roll replacement control method and system - Google Patents
1580 hot continuous rolling finishing mill working roll replacement control method and system Download PDFInfo
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- CN116833233A CN116833233A CN202310754905.7A CN202310754905A CN116833233A CN 116833233 A CN116833233 A CN 116833233A CN 202310754905 A CN202310754905 A CN 202310754905A CN 116833233 A CN116833233 A CN 116833233A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 17
- 230000000881 depressing effect Effects 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000010009 beating Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- 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
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The application discloses a 1580 hot continuous rolling finishing mill working roll replacement control method and a system, wherein the method comprises the following steps: when the roll replacement preparation starts, the following three processes are synchronously operated: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide; when the roller is pulled out, the upper supporting balance cylinder and the working roller track beam lifting cylinder are lifted at the same time, and the working roller balance cylinder is operated in the lifting process of the working roller track beam lifting action in place and the upper supporting balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted; and (3) adjusting the roll changing end mark from the initial position E3 of the roll changing trolley to a certain area when the roll changing trolley exits the rolling mill. The application improves the working efficiency of the 1580 finishing mill for replacing the working rolls, shortens the roll replacement time greatly and effectively improves the working rate of the hot rolling line.
Description
Technical Field
The application belongs to the technical field of finishing mill roll change control, and particularly relates to a 1580 hot continuous rolling finishing mill working roll change control method and system.
Background
1580 hot continuous rolling finishing mills must replace the work rolls frequently, normally every 2-3 hours, due to the easy wear of the work rolls during rolling. At present, a finishing mill working roll replacement adopts a flow sequential control method, namely after the finishing mill normally rolls the last piece of steel, an operation table starts a roll replacement preparation function, equipment in the finishing mill starts to act and position, after detection conditions of related detection equipment are met, a roll replacement flow is automatically started, mechanical equipment acts step by step according to a preset roll replacement scheme, and when the last equipment acts and the corresponding sensor detects that the last equipment acts in place, the next equipment acts and controls. The whole roll changing process takes a long time, and the effective operation rate of the hot rolling production line is seriously affected.
In summary, since the 1580 hot continuous rolling finishing mill has a high daily roll changing frequency and a long single roll changing time, the calendar operation rate and the yield of the production line are seriously affected, and thus, improvement and improvement of the existing finishing mill set working roll changing method are needed.
Disclosure of Invention
The application aims to provide a 1580 hot continuous rolling finishing mill working roll replacement control method and system, which solve the problem that the working roll replacement time of the existing 1580 hot continuous rolling finishing mill is long.
The technical scheme adopted by the application is as follows:
a1580 hot continuous rolling finishing mill working roll replacement control method comprises the following steps:
when the roll replacement preparation starts, the following three processes are synchronously operated: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide;
when the roller is pulled out, the upper supporting balance cylinder and the working roller track beam lifting cylinder are lifted at the same time, and the working roller balance cylinder is operated in the lifting process of the working roller track beam lifting action in place and the upper supporting balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted;
and (3) adjusting the roll changing end mark from the initial position E3 of the roll changing trolley to a certain area when the roll changing trolley exits the rolling mill.
Further, the roll changing trolley exits from a certain area of the rolling mill specifically comprises the following steps: the roll changing trolley retreats to E6 position.
Further, after the depressing unloading and the entrance and exit guide beating are completed, roll changing preparation is completed, and then roll changing is started, wherein roll changing comprises roll drawing and roll loading; when the roller is pulled out, the roller changing trolley reaches the E9 position of the target position, and the working roller is pulled out and then returns to the E3 position of the initial position; when the roller is installed, the roller changing trolley pushes the new working roller into the finishing mill E9 from the initial position E3, and then returns to the initial position E3.
A 1580 hot continuous rolling finishing mill work roll change control system comprising:
the roll replacement preparation module is used for synchronously carrying out the following three processes when roll replacement preparation begins: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide;
the roller drawing and loading module is used for enabling the upper support balance cylinder and the working roller track beam lifting cylinder to lift simultaneously when drawing rollers, and enabling the working roller balance cylinder to act in the lifting process of the working roller track beam lifting action in place and the upper support balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted;
and the roll changing ending module is used for adjusting the roll changing ending mark from the initial position E3 of the roll changing trolley to a certain area of the roll changing trolley which is withdrawn from the rolling mill.
Further, the roll changing trolley in the roll changing ending module exits from a certain area of the rolling mill specifically comprises the following steps: the roll changing trolley retreats to E6 position.
Further, after the depressing unloading and the entrance and exit guide beating are completed, roll changing preparation is completed, and then roll changing is started, wherein roll changing comprises roll drawing and roll loading; when the roller is pulled out, the roller changing trolley reaches the E9 position of the target position, and the working roller is pulled out and then returns to the E3 position of the initial position; when the roller is installed, the roller changing trolley pushes the new working roller into the finishing mill E9 from the initial position E3, and then returns to the initial position E3.
Compared with the prior art, the application has the following advantages:
under the condition of not changing the existing roll changing mechanical equipment and electrical equipment, the application effectively improves the action connection speed of the roll changing mechanical equipment, improves the working efficiency of the 1580 finishing mill for changing the working rolls, greatly shortens the roll changing time and effectively improves the working rate of the hot rolling line by redesigning and optimizing the actions of some control methods and sequential steps in the existing roll changing process.
Drawings
FIG. 1 is a flow chart of a method for controlling roll replacement of a work roll of a primary finishing mill;
FIG. 2 is a flow chart of a finishing mill work roll change control method of the present application;
FIG. 3 is a timing chart of the roll change operation of the present application;
FIG. 4 is a flow chart of an original roll;
FIG. 5 is a flow chart of the roller assembly of the present application;
FIG. 6 is a timing chart of the roller loading operation of the present application;
fig. 7 is a timing diagram of the simultaneous operation of the device of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
The application aims to provide an improvement of a control method for automatic roll changing of a finishing mill group in hot continuous rolling production, and under the condition of not changing the existing roll changing mechanical equipment and electrical equipment, the action connection speed of the roll changing mechanical equipment is effectively improved by redesigning and optimizing actions of some control methods and sequential steps in the existing roll changing flow, and the automatic roll changing efficiency of the finishing mill group is remarkably improved.
The application relates to an automatic roll-changing control method of a finishing mill group, which comprises 3 sets of control systems: respectively responsible for roll replacement preparation, automatic roll drawing and automatic roll loading control. Wherein the roll change preparation stage comprises: the roller is returned to a zero position, a main shaft is positioned and stopped, the unloading is carried out under the condition of pressing, the loop is lifted, and the guide at the inlet and the outlet is automatically knocked out; the automatic roller comprises: the roll changing trolley moves to E9 position in front of the rolling mill, the upper roll system and the lower roll system move to prepare for drawing rolls, and the roll changing trolley draws the working rolls to E3 position on the traversing platform; the automatic roller loading comprises: the roll changing trolley pushes the new roll from the transverse moving platform to the upper and lower roll systems of the rolling mill (E9 position) from the E3 position, the upper and lower roll systems are moved to the working position after the working roll is loaded, the roll changing trolley retreats to the outside of the transverse moving platform (E3 position), and the rolling mill automatically switches modes. And the whole roll changing process is controlled and completed by clicking a roll changing preparation and confirmation button.
The mechanical equipment acts in the whole roll changing process to sequentially execute the actions step by step, and particularly, the roll changing trolley is low in moving speed (60 seconds are needed from E3 to E9), the whole roll changing time is long, and the whole production efficiency is affected.
In order to shorten the roll changing time, the finishing mill roll changing equipment is divided into the internal equipment and the external equipment of the rolling mill, the internal equipment and the external equipment of the rolling mill synchronously act under the condition of meeting the interlocking relation of mechanical equipment in the whole roll changing process, and the roll changing efficiency is effectively improved by adjusting the original serial steps to be parallel steps.
The device in the rolling mill mainly comprises: the device comprises a roller channeling device, a pressing device, an upper supporting roller balancing device, an upper step pad device, a working roller balancing device, an upper working roller clamping plate, a lower working roller main shaft, a working roller track beam device, a lower supporting roller lifting device, a lower step pad device and the like.
The outside of the rolling mill comprises a finishing mill roll changing trolley, a looper, an inlet and outlet guide and the like.
In the original roll change control method, the external equipment of the rolling mill starts to move to the target position after the internal equipment of the finishing mill is in place; after the automatic roller drawing is started, the roller changing trolley starts to move from the initial position E3 to the front E9 of the rolling mill, and when the roller loading is finished, the roller changing trolley returns to the initial position E3 of the roller changing, and the roller loading is finished to automatically switch the finishing mill group mode.
Redesigning the improved control method:
1) The roll changing trolley is moved from the initial E3 position to the target position E9 position, the motion of the roll changing trolley is advanced from the completion of roll changing preparation to the start of roll changing preparation, when an operator operates a picture button and starts the roll changing preparation, the roll changing trolley starts to move from the initial E3 position to the target position E9, the synchronous motion of equipment in a rolling mill and the roll changing trolley is realized, and the time for waiting for the roll changing trolley to reach the target position E9 after the equipment in the rolling mill moves in place is reduced.
2) When the roll replacement is prepared, the serial control of the external and internal action sequences of the rolling mill is changed into parallel control, so that the overall action time is shortened: in the process of rolling mill inner equipment channeling return to zero, main shaft positioning and depressing unloading, the outer loopers of the rolling mill and the inlet and outlet guides and guards synchronously act, so that the time for preparing roll replacement is effectively reduced, and the method is shown in figures 1, 2 and 3.
3) In the process of automatic roller drawing and roller loading, under the condition of ensuring that mechanical equipment is interlocked, partial equipment is adjusted from sequential step actions to synchronous actions, as shown in fig. 7.
Before adjustment: when the roller is pulled out, the rail beam of the working roller is lifted in place, then the upper balance cylinder is lifted, and then the working roller is lifted out in a balanced way; when the roller is mounted, the rail beam of the working roller descends, the upper balance cylinder descends, and finally the balance cylinder of the working roller withdraws. When the roller is pulled out, the rail beam and the working roller are balanced to have interaction on mechanical equipment, the rail beam and the upper balance cylinder can be lifted at the same time, and when the roller is assembled, the rail beam, the upper balance cylinder and the upper balance cylinder can be lowered and retracted at the same time without mutual interference.
After adjustment: when the roller is pulled out, the upper supporting balance cylinder and the working roller track beam lifting cylinder are lifted at the same time, and the working roller balance cylinder is operated in the lifting process of the working roller track beam lifting action in place and the upper supporting balance cylinder; when the roller is installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder simultaneously descend and retract.
4) The roll change end mark is adjusted from the judgment that the roll change trolley completely returns to the initial position E3 to the judgment that the roll change trolley exits a certain area (E6) of the rolling mill, and the equipment in the rolling mill is returned to the loading operation in advance, as shown in fig. 4, 5 and 6.
The technology is realized and put into application, the working efficiency of replacing the working rolls of the 1580 finishing mill is improved, the roll replacement time is greatly shortened, and the working rate of a hot rolling line is improved.
The application also provides a 1580 hot continuous rolling finishing mill working roll replacement control system, which comprises:
the roll replacement preparation module is used for synchronously carrying out the following three processes when roll replacement preparation begins: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide;
the roller drawing and loading module is used for enabling the upper support balance cylinder and the working roller track beam lifting cylinder to lift simultaneously when drawing rollers, and enabling the working roller balance cylinder to act in the lifting process of the working roller track beam lifting action in place and the upper support balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted;
and the roll changing ending module is used for adjusting the roll changing ending mark from the initial position E3 of the roll changing trolley to a certain area of the roll changing trolley which is withdrawn from the rolling mill.
Further, the roll changing trolley in the roll changing ending module exits from a certain area of the rolling mill specifically comprises the following steps: the roll changing trolley retreats to E6 position.
Further, after the depressing unloading and the entrance and exit guide beating are completed, roll changing preparation is completed, and then roll changing is started, wherein roll changing comprises roll drawing and roll loading; when the roller is pulled out, the roller changing trolley reaches the E9 position of the target position, and the working roller is pulled out and then returns to the E3 position of the initial position; when the roller is installed, the roller changing trolley pushes the new working roller into the finishing mill E9 from the initial position E3, and then returns to the initial position E3.
As shown in fig. 1, 2 and 3, during roll changing preparation, the internal and external parts of the rolling mill are divided into three paths of parallel states, the looper, the guide plate, the roll shifting main shaft, the pressing roll changing trolley simultaneously act, and the roll changing trolley starts to move from an initial position E3 to a target position E9 after starting roll changing preparation.
As shown in fig. 4, 5 and 6, the end of finishing rolling change is set from the reverse E3 position of the changing carriage to the reverse E6 position (the carriage continues to reverse E3 position). And the roll changing trolley continuously retreats to the E3 position and stops.
As shown in the equipment simultaneous action iba diagram of fig. 7, the in-rolling mill equipment acts in advance with the equipment interlocking ensured: the upper balance cylinder and the lower working roll track beam rise simultaneously, the upper balance cylinder and the working roll balance cylinder rise simultaneously, and the like.
The application can effectively improve the roll changing efficiency of the finishing mill group, reduce the roll changing time of the finishing mill group and is beneficial to improving the operation rate of the production line.
It should be noted that each step/component described in the present application may be split into more steps/components, or two or more steps/components or part of operations of the steps/components may be combined into new steps/components, according to the implementation needs, to achieve the object of the present application.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (6)
1. A1580 hot continuous rolling finishing mill working roll replacement control method is characterized by comprising the following steps:
when the roll replacement preparation starts, the following three processes are synchronously operated: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide;
when the roller is pulled out, the upper supporting balance cylinder and the working roller track beam lifting cylinder are lifted at the same time, and the working roller balance cylinder is operated in the lifting process of the working roller track beam lifting action in place and the upper supporting balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted;
and (3) adjusting the roll changing end mark from the initial position E3 of the roll changing trolley to a certain area when the roll changing trolley exits the rolling mill.
2. The 1580 hot continuous rolling finishing mill work roll replacement control method according to claim 1, wherein the roll changing trolley exits from a certain area of the mill specifically comprises: the roll changing trolley retreats to E6 position.
3. The 1580 hot continuous rolling finishing mill working roll replacement control method according to claim 1, wherein the rolling unloading and the entrance and exit guide rolling out are completed, the roll replacement is ready to be completed, and then the roll replacement is started, and the roll replacement comprises roll drawing and roll loading; when the roller is pulled out, the roller changing trolley reaches the E9 position of the target position, and the working roller is pulled out and then returns to the E3 position of the initial position; when the roller is installed, the roller changing trolley pushes the new working roller into the finishing mill E9 from the initial position E3, and then returns to the initial position E3.
4. A 1580 hot continuous rolling finishing mill work roll change control system, comprising:
the roll replacement preparation module is used for synchronously carrying out the following three processes when roll replacement preparation begins: 1. the roll changing trolley starts to move from the initial E3 position to the target position E9; 2. the equipment in the rolling mill sequentially performs roll shifting and zeroing, main shaft positioning and depressing unloading; 3. the outer equipment of the rolling mill is sequentially lifted up by a loop and is driven out by an inlet guide and an outlet guide;
the roller drawing and loading module is used for enabling the upper support balance cylinder and the working roller track beam lifting cylinder to lift simultaneously when drawing rollers, and enabling the working roller balance cylinder to act in the lifting process of the working roller track beam lifting action in place and the upper support balance cylinder; when the rollers are installed, the upper supporting balance cylinder, the working roller balance cylinder and the working roller track beam lifting cylinder are simultaneously lowered and retracted;
and the roll changing ending module is used for adjusting the roll changing ending mark from the initial position E3 of the roll changing trolley to a certain area of the roll changing trolley which is withdrawn from the rolling mill.
5. The 1580 hot continuous rolling finishing mill work roll replacement control system according to claim 4, wherein the roll changing trolley in the roll changing end module exits from a certain area of the rolling mill specifically comprises: the roll changing trolley retreats to E6 position.
6. The 1580 hot continuous rolling finishing mill work roll replacement control system according to claim 4, wherein the reduction unloading and the entrance and exit guide rolling are completed, the roll replacement is ready to be completed, and then the roll replacement is started, and the roll replacement comprises roll drawing and roll loading; when the roller is pulled out, the roller changing trolley reaches the E9 position of the target position, and the working roller is pulled out and then returns to the E3 position of the initial position; when the roller is installed, the roller changing trolley pushes the new working roller into the finishing mill E9 from the initial position E3, and then returns to the initial position E3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754905.7A CN116833233A (en) | 2023-06-25 | 2023-06-25 | 1580 hot continuous rolling finishing mill working roll replacement control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754905.7A CN116833233A (en) | 2023-06-25 | 2023-06-25 | 1580 hot continuous rolling finishing mill working roll replacement control method and system |
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| Publication Number | Publication Date |
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| CN116833233A true CN116833233A (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310754905.7A Pending CN116833233A (en) | 2023-06-25 | 2023-06-25 | 1580 hot continuous rolling finishing mill working roll replacement control method and system |
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| Country | Link |
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| CN (1) | CN116833233A (en) |
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2023
- 2023-06-25 CN CN202310754905.7A patent/CN116833233A/en active Pending
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