CN108856306B - Head-to-tail continuous steel feeding rolling method and system - Google Patents
Head-to-tail continuous steel feeding rolling method and system Download PDFInfo
- Publication number
- CN108856306B CN108856306B CN201810659999.9A CN201810659999A CN108856306B CN 108856306 B CN108856306 B CN 108856306B CN 201810659999 A CN201810659999 A CN 201810659999A CN 108856306 B CN108856306 B CN 108856306B
- Authority
- CN
- China
- Prior art keywords
- rolling mill
- speed
- time
- running
- billet
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/72—Rear end control; Front end control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a method and a system for rolling steel by continuous feeding from head to tail, wherein the method comprises the following steps: detecting a first head signal of a steel billet; determining a first occlusion time based on the first head signal; after the first meshing time, controlling the speed of the first rolling mill to be reduced to a first running speed; controlling the first rolling mill to run at the first running speed for a preset first running time; and after the first running time, controlling the speed of the first rolling mill to rise to a second running speed, and controlling the first rolling mill to run at the second running speed for a preset second running time, wherein the second running time is the time for the second rolling mill to bite into the steel billet.
Description
Technical Field
The invention relates to the field of steel rolling, in particular to a head-to-tail continuous steel feeding rolling method and a head-to-tail continuous steel feeding rolling system.
Background
The size of the continuous steel feeding interval in bar production is a crucial technical index for steel enterprises, and shortening the steel feeding interval is one of effective means for improving the yield of bars, and can bring considerable economic benefit for the steel enterprises. The continuous feeding of the deformed steel end to end is a huge output of small investment: for a bar production line for annual production of 100 ten thousand tons of deformed steel, the shortest steel feeding interval of 2 seconds is calculated according to the current common production line, if the steel feeding is shortened to be continuous from head to tail, namely the steel feeding interval is 0 second, the steel tapping interval can generally reach about 800ms, the yield can be improved by about 2 percent according to 60 seconds of rolling one steel, the utilization rate of equipment is improved, the no-load running state of the equipment is reduced, the steel cost per ton is reduced, and meanwhile, the yield is improved according to the calculation of 2500-3000 yuan per ton of steel price under the condition of good market environment, and the technology can generate more than 5000 ten thousand economic benefits per year.
The factors for restricting the steel feeding interval of the bar production line comprise the shortest shearing interval time of flying shears, the shortest interval time of loop rising and falling, the shortest interval time of cold bed apron plate steel unloading, rolled piece tracking of a rough rolling area and the speed control time of a rough rolling inlet rolling mill. Various manufacturers are trying to shorten the gap, often subject to several factors above, and the gap between entering steel has been compressed to the limit.
In the prior art, two methods for shortening the steel feeding interval exist, the first method is manual control, steel is continuously fed during steel feeding, after a billet is bitten into a first rolling mill, manual intervention is carried out to reduce the speed, and after the distance is opened, the speed is manually increased. However, the method has the problems of manual operation labor intensity and inaccurate manual control to cause frame pulling, each steel is manually operated at the moment of head biting, the operation is frequent, the labor intensity is high, and rolling can be carried out at large intervals when other production tasks are carried out. And the method is subject to the subjectivity of manual operation, so that the serious problems of speed reduction in a continuous steel state of a 1#2# rolling mill, loosening of rolling mill equipment due to overlarge tension between two racks and the like are caused inevitably. The other method is that the rough rolling area is used for drawing and rolling steel, and when the steel is drawn and rolled, the steel is drawn and rolled at intervals which can be adapted by rear area equipment, but the method causes the size and the quality of the steel to be larger from head to tail and smaller from middle to middle, thereby causing the quality problem of products; the steel front slip change is large due to steel drawing and rolling, large sleeves are formed at the head and the tail of a finish rolling loop area, the production is unstable, and steel blocking accidents are easy to occur; and when the continuous steel state is not formed between the continuous steel rolling device and the downstream, the problems of large stress of the device, large damage to the rolling mill device and the like are solved.
Therefore, further shortening of the steel advancing rhythm, reduction of dependence of steel advancing control on operation of workers, and effective control of the speed control time and speed of the rough rolling inlet rolling mill are urgently needed.
Disclosure of Invention
In order to solve the problem of poor rhythm of steel feeding control in the prior art, the embodiment of the invention mainly aims to provide a head-to-tail continuous steel feeding rolling method, which comprises the following steps:
detecting a first head signal of a steel billet;
determining a first occlusion time based on the first head signal;
after the first meshing time, controlling the speed of the first rolling mill to be reduced to a first running speed;
controlling the first rolling mill to run at the first running speed for a preset first running time;
and after the first running time, controlling the speed of the first rolling mill to rise to a second running speed, and controlling the first rolling mill to run at the second running speed for a preset second running time, wherein the second running time is the time for the second rolling mill to bite into the steel billet.
Optionally, in an embodiment of the present invention, after the first engagement time, controlling the speed of the first rolling mill to decrease to a first operating speed includes: after the first meshing time, controlling the first rolling mill to bite the steel billet; controlling the speed of the first rolling mill to be reduced to a first running speed.
Optionally, in an embodiment of the present invention, after the second operation time, the method further includes controlling the second rolling mill to bite into the steel billet.
Optionally, in an embodiment of the present invention, the method further includes detecting and tracking a second head signal of the steel billet before the second rolling mill bites into the steel billet.
The embodiment of the invention also provides an end-to-end continuous steel feeding and rolling system, which comprises a control device, a first rolling mill transmission device and a first thermal detector, wherein the control device is used for controlling the first rolling mill to roll steel;
the first thermal detection device detects a first head signal of the steel billet and sends the first head signal to the control device;
the control device determines a first occlusion time according to the first head signal;
after the first meshing time, the control device sends a speed regulating command to the first rolling mill transmission device;
the first rolling mill transmission device controls the speed of the first rolling mill to be reduced to a first running speed according to the speed regulating instruction, and controls the first rolling mill to run at the first running speed for a preset first running time;
after the first running time, the first rolling mill transmission device controls the speed of the first rolling mill to rise to a second running speed according to the speed regulating instruction, and controls the first rolling mill to run at the second running speed for a preset second running time.
Optionally, in an embodiment of the present invention, after the first engagement time, the sending, by the control device, a speed regulation command to the first rolling mill transmission device includes: after the first meshing time, the control device sends a first meshing command to the first rolling mill transmission device; the first rolling mill transmission device controls the first rolling mill to bite the steel billet according to the first meshing instruction; and the control device sends the speed regulating command to the first rolling mill transmission device.
Optionally, in an embodiment of the present invention, the system further includes a second rolling mill transmission and a second rolling mill; after the second running time, the control device sends a second engagement instruction to the second rolling mill transmission device; and the second rolling mill transmission device controls the second rolling mill to bite the steel billet according to the second meshing instruction.
Optionally, in an embodiment of the present invention, the system further includes a second hot detector, which is disposed between the first rolling mill and the second rolling mill, and is configured to detect a second head signal of the steel billet before the second rolling mill bites into the steel billet, and send the second head signal to the control device.
Optionally, in an embodiment of the present invention, the system further includes a human-machine interface, where the human-machine interface is connected to the control device, and is configured to display the first head signal and the second head signal, and set the first operation speed, the first operation time, the second operation speed, and the second operation time.
Optionally, in an embodiment of the present invention, the control device is further configured to generate the speed regulation instruction according to the first operation speed, the first operation time, the second operation speed, and the second operation time set by the human-machine interface.
The invention effectively controls the steel feeding rhythm, ensures that the rolling process is reliable and stable, realizes the continuous steel feeding from head to tail, can improve the production rhythm and the yield, can improve the yield by about 2 percent compared with the production rhythm of 2 second intervals at the fastest speed when the continuous steel feeding cannot be carried out, and brings considerable economic benefit for iron and steel enterprises.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a flow chart of a method for rolling steel by continuous feeding from head to tail according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an end-to-end continuous steel feeding rolling system according to an embodiment of the present invention;
FIGS. 3A-3E are schematic views of a head-to-tail continuous steel feed rolling process according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a human-machine interface of an end-to-end continuous steel feeding rolling system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a system for rolling steel by continuous feeding from head to tail.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a flow chart of a rolling method of continuous steel feeding from head to tail according to an embodiment of the present invention, wherein the invention shown in the flow chart comprises:
step S1, detecting a first head signal of the steel billet;
step S2, determining a first occlusion time according to the first head signal;
step S3, after the first meshing time, controlling the speed of the first rolling mill to be reduced to a first running speed;
step S4, controlling the first rolling mill to run at the first running speed for a preset first running time;
and step S5, after the first running time, controlling the speed of the first rolling mill to rise to a second running speed, and controlling the first rolling mill to run at the second running speed for a preset second running time, wherein the second running time is the time for the second rolling mill to bite into the steel billet.
In this embodiment, during rolling, a plurality of billets are conveyed to the rolling mill at a certain speed, the first rolling mill is a first rolling mill of a rough rolling inlet, and before the billets reach the first rolling mill, a first head signal of the billets is detected, wherein the first head signal represents that the head of the billets reach the detection position. The distance between the detection position and the first rolling mill is generally 6-12 meters, and can be set according to actual conditions.
The first engagement time can be determined according to the distance between the detection position and the first rolling mill and the current moving speed of the steel billet, namely the steel billet is engaged by the first rolling mill after the first time. And after the billet is bitten by the first rolling mill, controlling the speed of the first rolling mill to be reduced to a first running speed, wherein the first running speed can be preset and is less than the current billet speed. The first rolling mill is kept running at the first running speed, and the keeping time is the first running time. And after the first running time, controlling the speed of the first rolling mill to rise to a second running speed. The second operating speed may be preset, and the second operating speed is higher than the first operating speed. And the first rolling mill keeps running at the second running speed, and the keeping time is the second running time. After a second operating time, the billet is bitten into by the second rolling mill. The first running speed, the second running speed, the first running time and the second running time can be preset, and the first running speed, the second running speed, the first running time and the second running time are set according to the required separation time of the two steel billets under the actual condition. In addition, the speed of the billet before being bitten by the first rolling mill and the first running speed satisfy the cascade change so as not to cause the grinding roller. The second running speed of the first rolling mill and the second rolling mill meet the second flow principle so as to avoid damaging the billet.
In this embodiment, since the second running speed of the first rolling mill is lower than the speed of the billet before the billet is bitten into the first rolling mill, when the first rolling mill keeps the second running speed, the distance between the current billet and the next billet is shortened, and the two billets can touch each other before the next billet is bitten into the first rolling mill, thereby realizing the end-to-end steel feeding. The first rolling mill is a rough rolling inlet, the section of the steel billet is large, and the contact time of the two steel billets can be reduced as much as possible by adjusting the speed of the steel billet before being occluded. Therefore, the steel billet cannot be deformed while the steel is fed end to end.
As an embodiment of the present invention, said controlling the speed of said first rolling mill to decrease to a first operating speed after said first bite time comprises:
after the first meshing time, controlling the first rolling mill to bite the steel billet;
controlling the speed of the first rolling mill to be reduced to a first running speed.
In this embodiment, the first engagement time may be determined based on the distance between the inspection position and the first rolling mill and the speed of the billet before the billet is engaged by the first rolling mill, and the billet is engaged by the first rolling mill after the first engagement time. The billet is bitten into the first rolling mill by controlling the first rolling mill. In addition, the first rolling mill can also automatically bite into the billet. And after the first rolling mill bites the billet, controlling the speed of the first rolling mill to be reduced to a first running speed.
As an embodiment of the present invention, the method further includes controlling the second rolling mill to bite into the steel billet after the second operation time.
In this embodiment, after the speed of the first rolling mill is increased to the second operation speed, the speed operation is maintained, and the holding time is the second operation time. According to practical application, the length of the second operation time can be properly reduced, namely, the billet can be bitten by the second rolling mill immediately after the speed of the first rolling mill reaches the second operation time. In order to avoid the situation of steel drawing and ensure that the speed of the first rolling mill reaches the second operation speed, the first rolling mill can be controlled to keep the second operation time at the second operation speed.
As an embodiment of the invention, a second header signal of the steel billet is detected and tracked before the second rolling mill bites into the steel billet.
In this embodiment, a detection position is further provided between the first rolling mill and the second rolling mill for detecting the second head signal of the billet. Tracking the second head signal can ensure that the position of the billet in the rolling field is monitored in real time, and the connecting position between the billet and the previous billet can be determined simultaneously to complete the subsequent process.
According to the head-tail continuous steel feeding rolling method, the rhythm of steel feeding is effectively controlled, the rolling process is reliable and stable, head-tail continuous steel feeding is realized, the production rhythm can be improved, the yield can be improved by about 2% compared with the production rhythm of 2 second intervals at the fastest speed when steel cannot be fed continuously, and considerable economic benefits are brought to iron and steel enterprises.
Fig. 2 is a schematic structural diagram of an end-to-end continuous steel feeding rolling system according to an embodiment of the present invention, wherein the system includes a control device 10, a first rolling mill 50, a first rolling mill transmission device 20, and a first heat detector 40;
the first thermal detector 40 detects a first head signal of the steel billet 30 and sends the first head signal to the control device 10;
the control device 10 determines a first occlusion time according to the first head signal;
after the first engagement time, the control device 10 sends a speed regulation command to the first rolling mill transmission device 20;
the first rolling mill transmission device 20 controls the speed of the first rolling mill 50 to be reduced to a first running speed according to the speed regulating instruction, and controls the first rolling mill 50 to run at the first running speed for a preset first running time;
after the first operation time, the first rolling mill transmission device 20 controls the speed of the first rolling mill 50 to increase to a second operation speed according to the speed regulation instruction, and controls the first rolling mill 50 to operate at the second operation speed for a preset second operation time.
In this embodiment, during rolling, a plurality of billets are fed to the rolling mill at a constant speed, the first rolling mill 50 is a roughing entry first rolling mill, and before the billet 30 reaches the first rolling mill, the first heat check 40 detects a first head signal of the billet 30, which indicates that the head of the billet 30 has reached the position of the first heat check 40, and transmits the first head signal to the control device 10. The distance between the first heat detector 40 and the first rolling mill 50 is generally 6-12 m, which can be set according to practical situations. Preferably, the control device 10 may adopt a PLC control system, and is connected to the thermal detection device through a remote I/network and a data connection line.
The control device 10 may determine the first engagement time, that is, the billet 30 is engaged by the first rolling mill 50 after the first engagement time elapses, based on the distance between the first thermal detector 40 and the first rolling mill 50 and the current moving speed of the billet 30. After the steel billet 30 is bitten into the first rolling mill 50, the control device 10 sends a speed regulation command to the first rolling mill transmission device 20, and the first rolling mill transmission device 20 controls the speed of the first rolling mill 50 to be reduced to a first running speed according to the debugging command, wherein the first running speed can be preset, and the first running speed is less than the current speed of the steel billet 30. The first rolling mill transmission device 20 controls the first rolling mill 50 to keep running at the first running speed according to the debugging command, and the keeping time is the first running time. After the first running time, the first rolling mill transmission device 20 controls the first rolling mill 50 to increase to the second running speed according to the debugging command. The second operating speed may be preset, and the second operating speed is higher than the first operating speed. The first rolling mill transmission device 20 controls the first rolling mill 50 to keep running at the second running speed according to the debugging command, and the keeping time is the second running time. The first running speed, the second running speed, the first running time and the second running time can be preset, and the first running speed, the second running speed, the first running time and the second running time are set according to the required separation time of the two steel billets under the actual condition. In addition, the speed of the billet 30 before biting into the first rolling mill and the first running speed satisfy a cascade change so as not to cause grinding rolls. The second operating speed of the first rolling mill 50 and the second rolling mill satisfy the second flow principle so as not to damage the billet.
In the present embodiment, since the second running speed of the first rolling mill 50 is lower than the speed of the billet 30 before the billet 30 is bitten into the first rolling mill 50, when the first rolling mill 50 maintains the second running speed, the distance between the preceding billet 30 and the following billet is reduced, and the two billets can touch before the following billet is bitten into the first rolling mill 50, thereby achieving the end-to-end steel feeding. Since the first rolling mill 50 is a rough mill entry, the billet cross-section is large and the contact time between the two billets can be minimized by adjusting the speed of the billet before it is bitten. Therefore, the steel billet cannot be deformed while the steel is fed end to end.
As an embodiment of the present invention, after the first engagement time, the control device 10 sends a speed regulation command to the first rolling mill transmission device 20, including:
after the first engagement time, the control device 10 sends a first engagement command to the first rolling mill transmission device 20;
the first rolling mill transmission device 20 controls the first rolling mill 50 to bite into the billet according to the first bite instruction;
the control device 10 sends the speed regulation command to the first rolling mill transmission device 20.
In this embodiment, the first engagement time may be determined based on the distance between the first heat check 40 and the first rolling mill 50 and the speed of the billet 30 before the billet 30 is engaged by the first rolling mill 50, and after the first engagement time, the billet 30 is engaged by the first rolling mill 50. A first bite command is sent to the first rolling mill drive 20 by the control device 10 to control the first rolling mill 50 so that the billet 30 is bitten into the first rolling mill 50. Further, the first rolling mill 50 may also autonomously bite into the billet 30. After the first rolling mill 50 bites the billet 30, the first mill transmission 20 controls the speed of the first rolling mill 50 to be reduced to the first running speed according to the speed regulation command.
As an embodiment of the present invention, the system further comprises a second mill transmission 80 and a second mill 70;
after the second operating time, the control device 10 sends a second engagement command to the second rolling mill transmission device 80;
the second rolling mill transmission 80 controls the second rolling mill 70 to bite into the steel slab 30 according to the second bite instruction.
In the present embodiment, after the speed of the first rolling mill 50 is increased to the second operation speed, the speed operation is maintained for the second operation time. Depending on the actual application, the length of the second run time may be reduced appropriately, i.e. the billet 30 may be bitten by the second rolling mill immediately after the speed of the first rolling mill 50 reaches the second run. In order to avoid the situation of drawing steel and to ensure that the speed of the first rolling mill 50 reaches the second operating speed, the first rolling mill 50 may be controlled to maintain the second operating time at the second operating speed. After the second run time, the billet is bitten into the second rolling mill 70.
The second rolling mill transmission device 80 controls the second rolling mill 70 to bite the billet 30 in accordance with a second bite instruction from the control device 10. Further, the second rolling mill 70 may also autonomously bite into the billet 30.
As an embodiment of the present invention, the system further includes a second thermal detector 60, and the second thermal detector 60 is disposed between the first rolling mill 50 and the second rolling mill 70, and configured to detect a second head signal of the steel billet 30 before the second rolling mill 70 bites into the steel billet 30, and send the second head signal to the control device 10.
In this embodiment, a second thermal detector 60 is further disposed between the first rolling mill 50 and the second rolling mill 70 for detecting a second head signal of the billet 30. The control apparatus 10 tracks the second head signal, can ensure that the position of the billet 30 in the rolling site is monitored in real time, and can simultaneously determine the connection position between the billet 30 and the previous billet to complete the subsequent process.
In this embodiment, the system further includes a human-machine interface 90, and the human-machine interface 90 is connected to the control device 10, and is configured to display the first head signal and the second head signal, and set the first operation speed, the first operation time, the second operation speed, and the second operation time.
The control device 10 is further configured to generate a speed regulation instruction according to the first operation speed, the first operation time, the second operation speed, and the second operation time set by the human-machine interface 90.
In the present embodiment, the human-machine interface 90 facilitates a user to detect data and signals during the rolling process, and the first operation speed, the first operation time, the second operation speed and the second operation time can be preset through the human-machine interface 90. The control device 10 may generate a speed regulation command based on the first operating speed, the first operating time, the second operating speed, and the second operating time. In addition, parameters such as the running speed of each rolling mill in the rolling process can be preset through the human-computer interface 90.
Fig. 3A-3E are schematic diagrams of a continuous end-to-end steel feeding and rolling process according to an embodiment of the present invention, which includes a first rolling mill, a second rolling mill, a third rolling mill, a No. 1 billet, a No. 2 billet, a first thermal inspection, and a second thermal inspection. Wherein, the No. 2 billet is the previous billet of the No. 1 billet.
As shown in fig. 3A, the billet No. 1 reaches the position of the first thermal inspection, and the first thermal inspection detects the first head signal of the billet No. 1 and sends the first head signal to the control device.
As shown in FIG. 3B, the No. 1 billet is fed with the No. 2 billet to form a continuous steel feeding state from head to tail. And the No. 2 billet enters a normal rolling process after being bitten by the second rolling mill, and at the moment, the first rolling mill keeps running at the second running speed. Because the speed of the billet before being bitten by the first rolling mill is higher than the second running speed of the first rolling mill, the No. 1 billet in the figure can catch up with the No. 2 billet before being bitten by the first rolling mill and touch the No. 2 billet, thereby realizing the continuous steel feeding from head to tail.
As shown in fig. 3C, the No. 1 billet is bitten by the first rolling mill, and at this time, the speed of the first rolling mill is shifted to the first operation speed, and the first operation speed is maintained and the first operation time is operated. Since the first running speed is lower than the second running speed, the distance between the No. 2 billet moving at the second running speed and the No. 1 billet moving at the first running speed is gradually increased.
After the first operating time, the speed of the first rolling mill is increased to gradually reach the second operating speed, as shown in fig. 3D. When the first rolling mill speed reaches the second running speed, the speed of the No. 1 billet is consistent with that of the No. 2 billet, the separation time between the two billets is the separation time required by the rolling process, and the first running speed, the first running time, the second running speed and the second running time can be preset according to the separation time.
After the first rolling mill is operated at the second operating speed for the second operating time as shown in fig. 3E, the No. 1 billet undergoes the second thermal inspection, the second thermal inspection acquires the second head signal thereof, and the No. 1 billet is bitten into the second rolling mill. At the moment, the second thermal detection sends the collected second head signal of the No. 1 billet to the control device, so that the position of the No. 1 billet in a rolling field can be monitored in real time, and the head-tail connection position of the No. 1 billet and the No. 2 billet is determined, so that the subsequent rolling process is completed. And after being bitten by the second rolling mill, the No. 1 billet enters a normal rolling process.
Fig. 4 is a schematic diagram of a human-machine interface of an end-to-end continuous steel feeding and rolling system according to an embodiment of the present invention, wherein the schematic diagram includes a speed drop input/disable switching button; setting a low-speed ratio example; low speed duration (ms), etc. The quick-drop steel feeding device comprises a quick-drop input/forbidden switching button, a control unit and a control unit, wherein the quick-drop input/forbidden switching button is used for selecting whether a head-tail continuous steel feeding function can be input or not through the switching button; the low speed ratio example is set for adjusting the magnitude of the parameter to adjust the magnitude of the speed reduction of the inlet mill according to the coefficient of the current speed of the inlet mill (i.e. the first mill). And information such as rolling interval, rolling time and the like is displayed on the human-computer interface, so that the monitoring and the operation of a user are facilitated.
According to the head and tail continuous steel feeding rolling method, the rhythm of steel feeding is effectively controlled, so that the rolling process is reliable and stable, head and tail continuous steel feeding is realized, the production rhythm can be improved, the yield can be improved, and compared with the production rhythm of 2 second intervals at the fastest speed, which cannot continuously feed steel, the yield can be improved by about 2%, and considerable economic benefits are brought to steel enterprises.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A method for rolling steel in a head-to-tail continuous feeding manner, which is characterized by comprising the following steps:
detecting a first head signal of a steel billet;
determining a first occlusion time based on the first head signal;
after the first meshing time, controlling the speed of the first rolling mill to be reduced to a first running speed;
controlling the first rolling mill to run at the first running speed for a preset first running time;
and after the first running time, controlling the speed of the first rolling mill to rise to a second running speed, controlling the first rolling mill to run at the second running speed for a preset second running time, and after the second running time, controlling the second rolling mill to bite into the billet.
2. The method of claim 1, wherein controlling the speed of the first rolling mill to decrease to a first operating speed after the first bite time comprises:
after the first meshing time, controlling the first rolling mill to bite the steel billet;
controlling the speed of the first rolling mill to be reduced to a first running speed.
3. The method of claim 1 further comprising detecting and tracking a second header signal of the steel billet prior to the second rolling mill biting into the steel billet.
4. The system is characterized by comprising a control device, a first rolling mill transmission device and a first thermal detector;
the first thermal detection device detects a first head signal of the steel billet and sends the first head signal to the control device;
the control device determines a first occlusion time according to the first head signal;
after the first meshing time, the control device sends a speed regulating command to the first rolling mill transmission device;
the first rolling mill transmission device controls the speed of the first rolling mill to be reduced to a first running speed according to the speed regulating instruction, and controls the first rolling mill to run at the first running speed for a preset first running time;
after the first running time, the first rolling mill transmission device controls the speed of the first rolling mill to rise to a second running speed according to the speed regulating instruction, and controls the first rolling mill to run at the second running speed for a preset second running time.
5. The system of claim 4, wherein said control device sending a speed governing command to said first mill drive after said first bite time comprises:
after the first meshing time, the control device sends a first meshing command to the first rolling mill transmission device;
the first rolling mill transmission device controls the first rolling mill to bite the steel billet according to the first meshing instruction;
and the control device sends the speed regulating command to the first rolling mill transmission device.
6. The system of claim 4, further comprising a second mill transmission and a second mill;
after the second running time, the control device sends a second engagement instruction to the second rolling mill transmission device;
and the second rolling mill transmission device controls the second rolling mill to bite the steel billet according to the second meshing instruction.
7. The system of claim 6, further comprising a second hot check disposed between the first rolling mill and the second rolling mill for detecting a second header signal of the steel billet prior to the second rolling mill biting into the steel billet and sending the second header signal to the control device.
8. The system of claim 7, further comprising a human-machine interface coupled to the control device for displaying the first head signal and the second head signal and setting the first operating speed, the first operating time, the second operating speed, and the second operating time.
9. The system of claim 8, wherein the control device is further configured to generate the speed-adjusting command according to the first operating speed, the first operating time, the second operating speed, and the second operating time set by the human-machine interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659999.9A CN108856306B (en) | 2018-06-25 | 2018-06-25 | Head-to-tail continuous steel feeding rolling method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659999.9A CN108856306B (en) | 2018-06-25 | 2018-06-25 | Head-to-tail continuous steel feeding rolling method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108856306A CN108856306A (en) | 2018-11-23 |
| CN108856306B true CN108856306B (en) | 2020-02-11 |
Family
ID=64294496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810659999.9A Active CN108856306B (en) | 2018-06-25 | 2018-06-25 | Head-to-tail continuous steel feeding rolling method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108856306B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453066B (en) * | 2020-10-27 | 2022-07-29 | 中天钢铁集团有限公司 | Control method for stably controlling steel passing interval of high-speed wire steel rolling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215313A (en) * | 1987-03-05 | 1988-09-07 | Toshiba Corp | Control device for spacing of material |
| CN103372572A (en) * | 2012-04-28 | 2013-10-30 | 宝山钢铁股份有限公司 | Control method for improving rolling pace of roughing mill |
| CN104438319A (en) * | 2014-10-13 | 2015-03-25 | 首钢京唐钢铁联合有限责任公司 | Rough rolling speed increasing method |
| CN106670241A (en) * | 2017-01-19 | 2017-05-17 | 宣化钢铁集团有限责任公司 | Device and method for shortening continuous tapping time interval of rolled steel production line |
| CN107159718A (en) * | 2017-06-28 | 2017-09-15 | 山东钢铁股份有限公司 | A kind of Steel Rolling Control method, apparatus and system |
| CN107520254A (en) * | 2017-10-11 | 2017-12-29 | 天津天合共创科技有限公司 | A kind of non-gap rolling system and method based on PLC controls |
| CN107983777A (en) * | 2017-12-08 | 2018-05-04 | 江苏永钢集团有限公司 | A kind of method for control speed being used in steel rolling process |
-
2018
- 2018-06-25 CN CN201810659999.9A patent/CN108856306B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215313A (en) * | 1987-03-05 | 1988-09-07 | Toshiba Corp | Control device for spacing of material |
| CN103372572A (en) * | 2012-04-28 | 2013-10-30 | 宝山钢铁股份有限公司 | Control method for improving rolling pace of roughing mill |
| CN104438319A (en) * | 2014-10-13 | 2015-03-25 | 首钢京唐钢铁联合有限责任公司 | Rough rolling speed increasing method |
| CN106670241A (en) * | 2017-01-19 | 2017-05-17 | 宣化钢铁集团有限责任公司 | Device and method for shortening continuous tapping time interval of rolled steel production line |
| CN107159718A (en) * | 2017-06-28 | 2017-09-15 | 山东钢铁股份有限公司 | A kind of Steel Rolling Control method, apparatus and system |
| CN107520254A (en) * | 2017-10-11 | 2017-12-29 | 天津天合共创科技有限公司 | A kind of non-gap rolling system and method based on PLC controls |
| CN107983777A (en) * | 2017-12-08 | 2018-05-04 | 江苏永钢集团有限公司 | A kind of method for control speed being used in steel rolling process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108856306A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106670241B (en) | A kind of steel rolling production-line that shortens continuously is tapped the device and method of time interval | |
| CN110280602B (en) | Intelligent steel rolling abnormal rolling evaluation system and processing method | |
| CN110280598B (en) | Intelligent steel rolling intelligent loop pulling control method | |
| CN109396195B (en) | Anti-seismic steel bar head and tail identification quick-falling control system and control method | |
| CN109332626B (en) | Continuous casting billet hot-feeding direct-rolling automatic blank discharging equipment and method | |
| CN109967532B (en) | Method for preventing hot-rolled strip finishing mill group from slipping | |
| CN103350115B (en) | Method for controlling speed of hot-rolling thin-gauge loop compensation host machine through variable coefficient | |
| CN109590336B (en) | Control system and method for steel billet spacing | |
| CN108856306B (en) | Head-to-tail continuous steel feeding rolling method and system | |
| CN109590335B (en) | Control system and method for preventing steel billet from heading and tailing | |
| CN111774421A (en) | Rod and wire rod rough rolling head rear-end collision feeding control method | |
| CN109590337B (en) | Control system and method for preventing steel scrap | |
| CN107020299B (en) | A kind of tail portion lamination identification monitoring method of hot rolling coiler | |
| CN111570529B (en) | Automatic control method of coiling machine in emergency of strip breakage of fully-continuous hot-rolled thin strip line | |
| CN113231478B (en) | Device for accurately positioning bar rolling line and control method | |
| CN105327948A (en) | Control method for continuous rolling of wire rods and bars | |
| CN113369315A (en) | Control method for rolling mill impact speed drop compensation based on direct-current transmission device | |
| CN112058915B (en) | Method for controlling production rhythm of rolling mill | |
| CN111360077B (en) | Control method for preventing strip steel from throwing into acid tank | |
| CN212093725U (en) | Endless rolling wire rod production facility | |
| CN113305160A (en) | Descaling machine pinch roll control method and device and strip steel descaling system | |
| JPH09276931A (en) | Method for coiling hot rolled steel strip and device for coiling hot rolled steel strip | |
| CN104384185B (en) | System and method for preventing one-pass drifting and off-tracking of reversing cold mill | |
| CN202779188U (en) | Automatic billet breaking control device | |
| CN111346925B (en) | Method and system for preventing strip breakage and vehicle sliding of acid continuous rolling mill |
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 |