CN117161108A

CN117161108A - Hot rolled steel plate shape control method, device, medium and electronic equipment

Info

Publication number: CN117161108A
Application number: CN202311253851.2A
Authority: CN
Inventors: 岳江波; 李利巍; 邹航; 唐璇; 宋畅
Original assignee: Wuhan Iron and Steel Co Ltd
Current assignee: Wuhan Iron and Steel Co Ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-12-05

Abstract

The application discloses a hot rolled steel plate shape control method, a device, a medium and electronic equipment. The method comprises the following steps: after laminar cooling, judging whether the head of the steel plate reaches a side guide plate area or not by acquiring the head position of the steel plate; if the head of the steel plate reaches the side guide plate area, detecting the center line of the head of the steel plate; if the head center line deviates from the center line of the conveying roller, detecting the deviation direction and the deviation amount of the head center line, and determining the adjustment direction and the adjustment amount of the side guide plate according to the deviation direction and the deviation amount; and adjusting the side guide plate based on the adjusting direction and the adjusting amount to control the plate shape of the steel plate. The technical scheme provided by the application can improve the control effect of the opposite side guide plate, thereby improving the control of the shape of the steel plate.

Description

Hot rolled steel plate shape control method, device, medium and electronic equipment

Technical Field

The application belongs to the technical field of hot-rolled steel plate shape control, and particularly relates to a hot-rolled steel plate shape control method, a hot-rolled steel plate shape control device, a hot-rolled steel plate shape control medium and electronic equipment.

Background

The technological process of the hot continuous rolling unit is roughly divided into the procedures of heating, rough rolling, finish rolling, coiling and the like. The quality of the hot rolled coil and the various procedures of the hot rolling process have correlation. The tower shape in coil form is used as a main expression form of plate shape, and is directly related to the original plate shape of the steel plate during the hot rolling process. The tower shape usually occurs after the strip steel is subjected to finish rolling or after the strip steel is subjected to uneven cooling, so that the coil shape is difficult to control, tower shape defects of the strip steel are caused, the tower shape defects are generally caused by the reasons of strip steel camber, poor centering function of a coiling machine side guide plate and the like, part of users have very strict requirements on the tower shape defects of an inner ring, the tower shape of the inner ring exceeds the requirements of the users, and the inner ring must be rewound and repaired in a finishing process, so that the quality cost is lost. The tower shape of the steel coil and the original shape of the steel plate have direct correlation, and although the control of the side guide plates after rolling and the high-efficiency coiling of the coiling machine can have a certain improvement effect on the tower shape of the steel coil, the control of the original shape directly determines the excellent coil shape of the steel coil. Therefore, it is necessary to perform the plate shape control from the hot rolling to the coiling. In view of the above, the present application provides a hot rolled steel sheet shape control method that fulfills the above-described needs.

Disclosure of Invention

Embodiments of the present application provide a hot rolled steel sheet shape control method, apparatus, medium, and electronic device, which can improve the control effect of a side guide plate, thereby improving the control of the steel sheet shape, and can improve the coiling quality of the steel sheet and reduce the tower shape of the steel sheet.

Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.

According to a first aspect of an embodiment of the present application, there is provided a hot rolled steel sheet shape control method characterized by comprising: after laminar cooling, judging whether the head of the steel plate reaches a side guide plate area or not by acquiring the head position of the steel plate; if the head of the steel plate reaches the side guide plate area, detecting the center line of the head of the steel plate; if the head center line deviates from the center line of the conveying roller, detecting the deviation direction and the deviation amount of the head center line, and determining the adjustment direction and the adjustment amount of the side guide plate according to the deviation direction and the deviation amount; and adjusting the side guide plate based on the adjusting direction and the adjusting amount to control the plate shape of the steel plate.

In some embodiments of the present application, based on the foregoing aspects, the determining the adjustment direction and the adjustment amount of the side guide according to the offset direction and the offset amount includes: determining the adjusting direction of the side guide plate according to the offset direction, and determining the adjusting amount of the side guide plate according to the offset amount; if the offset direction deviates to the transmission side of the conveying roller way, the side guide plate is controlled by adopting a transmission side pressure mode; and if the offset direction deviates to the working side of the conveying roller way, controlling the side guide plate by adopting a working side pressure mode.

In some embodiments of the application, based on the foregoing, the method further comprises, prior to acquiring the head position of the steel plate: detecting the offset direction and the offset of the head of the billet or the intermediate billet in the process of rough rolling the billet and finish rolling the intermediate billet, and determining the adjusting direction and the adjusting pressure of the pinch roll according to the offset direction and the offset; if the offset direction of the head of the billet or the intermediate billet is the pinch roll driving side, increasing the pressure of the pinch roll working side so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side; if the offset direction of the head of the billet or the intermediate billet is the pinch roll working side, the pressure of the pinch roll driving side is increased so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side.

In some embodiments of the application, based on the foregoing, the method further comprises, prior to acquiring the head position of the steel plate: in the process of temperature control of the steel billet or the intermediate billet or the steel plate, respectively obtaining a heating furnace outlet, a roughing mill inlet, a finishing mill inlet and corresponding temperature differences in the width direction of the steel billet or the intermediate billet or the steel plate after ultra-fast cooling; and correspondingly adjusting the furnace temperature of the heating furnace, the dephosphorization water flow in the roughing mill and the cooling water flow corresponding to the roughing mill, the finishing mill and the ultra-fast cooling section if the temperature difference is larger than a preset threshold value according to each temperature difference.

In some embodiments of the application, the preset threshold is 40 ℃ based on the foregoing protocol.

In some embodiments of the application, based on the foregoing, the method further comprises, prior to acquiring the head position of the steel plate: in the course of rough rolling of billet or finish rolling of intermediate billet, the transverse vibration of rough rolling is controlled to be less than or equal to 20mm, and the transverse vibration of finish rolling is controlled to be less than or equal to 40mm.

In some embodiments of the application, based on the foregoing, the method further comprises: before the billet is rolled, the equipment and the billet are subjected to surface treatment, so that the difference of the horizontal planes of the upper plane and the lower plane of the steel plate is controlled.

Compared with the prior art, the application at least comprises the following beneficial effects:

in the application, the product obtained by solidifying the steelmaking molten steel in the whole production and processing process can be called a billet. The product obtained after rolling the billet in the roughing mill may be referred to as an intermediate billet. The product obtained after the intermediate billet is rolled by the finishing mill may be referred to as a steel sheet.

In order to improve the control effect of the side guide on the shape of the steel plate, the section of the conveying roller for conveying the steel plate to the coiling machine is divided into three parts, namely a common area, a side guide area and a coiling area. After laminar cooling, it is determined whether the head of the steel sheet reaches the side guide area by acquiring the head position of the steel sheet. If the head of the steel plate reaches the side guide area, the center line of the head of the steel plate is detected. If the head center line deviates from the center line of the conveying roller, detecting the deviation direction and the deviation amount of the head center line, and determining the adjusting direction and the adjusting amount of the side guide plate according to the deviation direction and the deviation amount. If the offset direction deviates to the transmission side of the conveying roller way, the opposite side guide plate is controlled by adopting a transmission side pressure mode. If the offset direction is biased towards the working side of the conveying roller way, the side guide plate is controlled by adopting a working side pressure mode.

In the present application, the head of the billet or intermediate billet in the pinch roll is detected during rough rolling of the billet and finish rolling of the intermediate billet. If the offset direction of the head of the billet or intermediate billet is the pinch roll driving side, the pressure of the pinch roll working side is increased, and if the offset direction of the head of the billet or intermediate billet is the pinch roll working side, the pressure of the pinch roll driving side is increased so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side.

And meanwhile, in the temperature control process of the steel billet, the intermediate billet and the steel plate, temperature differences in the width direction of the steel billet, the intermediate billet and the steel plate corresponding to the outlet of the heating furnace, the inlet of the roughing mill, the inlet of the finishing mill and the ultra-fast cooling are respectively obtained. And the furnace temperature of the heating furnace, the flow of dephosphorization water in the roughing mill and the flow of cooling water corresponding to the roughing mill, the finishing mill and the ultra-fast cooling section are correspondingly adjusted according to the temperature differences.

Based on the method, the control effect of the opposite side guide plate can be improved, so that the control of the steel plate shape is improved, the coiling quality of the steel plate can be improved, and the tower shape of the steel plate can be reduced.

According to a second aspect of the embodiment of the present application, there is provided a hot rolled steel sheet shape control apparatus characterized by comprising: the judging unit is used for judging whether the head of the steel plate reaches the side guide plate area or not by acquiring the head position of the steel plate after laminar cooling; a first detecting unit for detecting a head center line of the steel plate if the head of the steel plate reaches a side guide area; a second detecting unit for detecting a deviation direction and a deviation amount of the head center line if the head center line deviates from the center line of the transfer roller, and determining an adjustment direction and an adjustment amount of the side guide according to the deviation direction and the deviation amount; and the adjusting unit is used for adjusting the side guide plate based on the adjusting direction and the adjusting amount so as to control the plate shape of the steel plate.

According to a third aspect of embodiments of the present application, there is provided a computer readable storage medium having stored therein at least one program code loaded and executed by a processor to implement operations performed by the method.

According to a fourth aspect of an embodiment of the present application, there is provided an electronic device, characterized in that the electronic device comprises one or more processors and one or more memories, the one or more memories having stored therein at least one program code loaded and executed by the one or more processors to implement the operations performed by the method.

The advantages of the embodiments of the second aspect and the fourth aspect may be referred to the advantages of the first aspect and the embodiments of the first aspect, and are not described here again.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a flowchart showing a hot rolled steel sheet shape control method in an embodiment of the present application;

FIG. 2 is a diagram showing a side guide control architecture in accordance with the present application;

FIG. 3 illustrates a pinch roll pressure control schematic in an embodiment of the present application;

fig. 4 shows respective temperature change charts of comparative example 1;

fig. 5 is a schematic view showing the structure of a hot rolled steel sheet shape control device in an embodiment of the present application;

fig. 6 shows a schematic structural diagram of an electronic device in an embodiment of the application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

In the present application, the hot rolling mill mainly includes 4 steps, namely, a heating step, a rough rolling step, a finish rolling step, and a coiling step, in the course of processing a steel slab into a steel coil. The product of solidification of steel making molten steel during the whole production process can be called a billet. The product obtained after rolling the billet in the roughing mill may be referred to as an intermediate billet. The product obtained after the intermediate billet is rolled by the finishing mill may be referred to as a steel sheet.

First, the billet is transported by the transport roller to the heating furnace to perform the heating process, and in general, when the billet is heated to 1150 ℃ to 1200 ℃, the heating of the billet is stopped. After being heated at high temperature, the surface of the steel billet can form iron scales, so that the steel billet needs to be subjected to a dephosphorization process to ensure the quality of the steel billet in the subsequent process. After the dephosphorization process, the billet is transferred to a roughing mill for the roughing process.

In the rough rolling process, the billet is generally rolled into an intermediate billet of 35mm to 70mm, and the billet is generally subjected to a rough rolling process of 5 to 7 passes during the rolling process. Meanwhile, during the rough rolling process, a proper amount of cooling water is added according to the temperature distribution condition of the steel billet.

Similarly, in the finish rolling process, the intermediate billet is generally rolled into a steel plate of 30mm or less, and the intermediate billet is subjected to a multi-pass finish rolling process in the finish rolling process. And during the finish rolling process, a proper amount of cooling water is added according to the temperature distribution condition of the intermediate billet.

After the rough rolling process and the finish rolling process, the steel plate is subjected to ultra-fast cooling or laminar cooling, so that the temperature of the steel plate is reduced to below 700 ℃ to finish the coiling process of the steel plate.

It should be added and described that in the present application, in order to control the shape of the steel sheet during the processing of the steel slab into the steel coil in the hot rolling mill, the temperatures of the steel slab and the intermediate slab are controlled during the rough rolling process and the finish rolling process of the steel slab to ensure that the temperature difference between the steel slab and the intermediate slab in the lateral direction is less than a preset threshold. Meanwhile, the pressure of the pinch roll is regulated in the processes of the billet rough rolling process and the intermediate billet finish rolling process so as to control the level difference value of the billet and the intermediate billet. In addition, the side guide plate is added in the conveying process before the coiling process, and the adjusting direction and the adjusting amount of the side guide plate are determined according to the offset direction and the offset amount of the billet. By integrating the method, the application can better control the plate shape of the steel plate, thereby improving the production quality of products.

The present application will be described in detail below:

fig. 1 shows a flowchart of a hot rolled strip shape control method in an embodiment of the present application. The hot rolled steel sheet shape control method may be performed by an apparatus having a calculation processing function, for example, may be performed by a hot rolled steel sheet shape control apparatus. Referring to fig. 1, the hot rolled steel sheet shape control method at least includes steps 110 to 140, and is described in detail as follows:

step 110, after laminar cooling, judging whether the head of the steel plate reaches the side guide plate area by acquiring the head position of the steel plate.

And 120, if the head of the steel plate reaches the side guide plate area, detecting the center line of the head of the steel plate.

And 130, if the head center line deviates from the center line of the conveying roller, detecting the deviation direction and the deviation amount of the head center line, and determining the adjustment direction and the adjustment amount of the side guide plate according to the deviation direction and the deviation amount.

And 140, adjusting the side guide plate based on the adjusting direction and the adjusting amount to control the plate shape of the steel plate.

After the laminar cooling, the steel sheet is transferred to a coiler by a transfer roller to complete the coiling process of the steel sheet. In the conveying process, the steel plate heads can be sideways bent to different degrees, and the conveying of long distances can aggravate the sideways bending degree of the steel plate heads. Meanwhile, the coiling layout of the existing hot continuous rolling production line is compact, the length of a side guide plate in front of a coiling machine is generally 2-3 m, the time for correcting deviation is insufficient, the impact force of a coiled thick plate which cannot be repaired and saved on the guide plate is generally large, and the pressure limit of a coiling side guide plate oil cylinder is easily exceeded.

Therefore, in order to improve the control effect of the side guide on the steel plate and reduce the degree of side bending of the steel plate head, in the present application, the conveying roller that conveys the steel plate to the coiler is divided into three parts, namely a normal area, a side guide area, and a coiling area. Referring to FIG. 2, a side guide control architecture diagram is shown in accordance with the present application. In the normal region in fig. 2, the opening of the side guide is B, and the steel plate moves forward by the drive of the conveying roller. When the head position of the steel plate is detected to reach the side guide area, the head center line of the steel plate is detected. If the head center line deviates from the center line of the conveying roller, the deviation direction and the deviation amount of the head center line are detected, and the adjustment direction and the adjustment amount of the side guide plate are determined according to the deviation direction and the deviation amount.

Then, an adjustment direction of the side guide is determined according to the offset direction, and an adjustment amount of the side guide is determined according to the offset amount. And if the offset direction deviates to the transmission side of the conveying roller way, the side guide plate is controlled by adopting a transmission side pressure mode. And if the offset direction deviates to the working side of the conveying roller way, controlling the side guide plate by adopting a working side pressure mode. By means of the orientation and quantitative control of the side guide plates, the problems that the correction time of the side guide plates is insufficient and the pressure limit of the side guide plate oil cylinder is exceeded can be solved, and therefore the plate shape control of the steel plate is achieved.

For example, with continued reference to fig. 2, in the side guide area in fig. 2, if the deflection direction of the steel sheet is biased toward the drive side of the conveyor table by the action of the conveyor roller and the deflection amount is W2, the side guide is controlled by the drive side pressure method, and the adjustment amount of the side guide is 0.5W2.

In addition, after the deviation correction of the head part of the steel plate is realized, the opening degree of the side guide plate can be reduced in the coiling area, so that the space for the deviation of the steel plate is reduced, and the shape of the steel plate can be further controlled.

For example, with continued reference to fig. 2, in the winding region in fig. 2, by adjusting the opening degree of the side guide to B1, the influence of the conveying roller on the steel sheet is reduced, thereby improving the winding quality of the steel sheet and reducing the tower shape of the steel sheet. Wherein b1=b-W2.

Further, referring to FIG. 3, a schematic diagram of pinch roll pressure control in an embodiment of the present application is shown. In the process of rough rolling of a billet and finish rolling of an intermediate billet, detecting the offset direction and the offset of the head of the billet or the intermediate billet, and determining the adjusting direction and the adjusting pressure of a pinch roll according to the offset direction and the offset. If the offset direction of the head of the billet or the intermediate billet is the pinch roll driving side, increasing the pressure of the pinch roll working side so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side; if the offset direction of the head of the billet or the intermediate billet is the pinch roll working side, the pressure of the pinch roll driving side is increased so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side.

Further, before acquiring the head position of the steel plate, the method further includes: and respectively acquiring temperature differences in the width direction of the corresponding billet or intermediate billet or steel plate after the heating furnace outlet, the roughing mill inlet, the finishing mill inlet and the ultra-fast cooling in the temperature control process of the billet or intermediate billet or steel plate. And correspondingly adjusting the furnace temperature of the heating furnace, the dephosphorization water flow in the roughing mill and the cooling water flow corresponding to the roughing mill, the finishing mill and the ultra-fast cooling section if the temperature difference is larger than a preset threshold value according to each temperature difference. Wherein the preset threshold is 40 ℃. The control process of the temperature difference will be described below by table 1.

TABLE 1

Specifically, table 1 shows temperature differences in the width direction of the billet or intermediate billet or steel plate corresponding to example 1-example 6, and the billet or intermediate billet or steel plate corresponding to comparative example 1, at the outlet of the heating furnace, the inlet of the roughing mill, the inlet of the finishing mill, and after ultra-fast cooling. Wherein, the comparative example 1 does not use the temperature difference adjusting method in the present method.

After the furnace temperature of the heating furnace, the flow rate of the dephosphorizing water in the roughing mill and the flow rates of the cooling water corresponding to the roughing mill, the finishing mill and the ultra-fast cooling section were adjusted, the temperature differences of the heating furnace outlet, the roughing mill inlet, the finishing mill inlet and the ultra-fast cooling according to examples 1 to 6 were maintained at 20 ℃ to 40 ℃.

Referring to fig. 4, various temperature change diagrams of comparative example 1 are shown. In fig. 4, D represents the working side and W represents the transmission side. As can be seen from FIG. 4-1, the temperature difference at the outlet of the heating furnace was 70℃in comparative example 1. As can be seen from FIG. 4-2, the temperature difference at the outlet of the heating furnace was 70℃in comparative example 1. As can be seen from fig. 4 to 3, the temperature difference at the outlet of the heating furnace of comparative example 1 was 65 ℃. As can be seen from fig. 4 to 4, the temperature difference at the outlet of the heating furnace of comparative example 1 was 50 ℃.

Thus, by comparing examples 1 to 6 using the temperature difference adjusting method in the present method with comparative example 1 not using the temperature difference adjusting method in the present method, the advantageous effects of the above temperature difference adjusting method can be clearly seen, and temperature difference control of a billet or intermediate billet or steel plate at the outlet of a heating furnace, the inlet of a roughing mill, the inlet of a finishing mill, and after ultra-fast cooling can be achieved.

Further, with continued reference to Table 1, table 1 also shows the rough rolling transverse vibration and the finish rolling transverse vibration corresponding to examples 1 to 6, and comparative example 1. In the course of rough rolling of the steel billet and finish rolling of the intermediate billet, the shape of the steel plate can be effectively controlled and the tower shape of the steel plate can be reduced in the coiling process of the steel plate by controlling the rough rolling transverse vibration of the steel billet to be less than or equal to 20mm and the finish rolling transverse vibration of the intermediate billet to be less than or equal to 40mm.

Further, the apparatus and the billet are subjected to surface treatment before the billet is rolled, thereby controlling the difference in level between the upper and lower planes of the steel sheet.

The application also provides a hot rolled steel plate shape control device based on the same inventive concept, and referring to fig. 5, a schematic structural diagram of the hot rolled steel plate shape control device in the embodiment of the application is shown. The hot rolled steel sheet shape control apparatus 500 includes: a judging unit 501 for judging whether the head of the steel plate reaches the side guide area by acquiring the head position of the steel plate after laminar cooling; a first detecting unit 502 for detecting a head center line of the steel plate if the head of the steel plate reaches a side guide area; a second detecting unit 503 for detecting a shift direction and a shift amount of the head center line if the head center line is shifted with respect to the transfer roller center line, and determining an adjustment direction and an adjustment amount of the side guide according to the shift direction and the shift amount; and an adjusting unit 504 for adjusting the side guide based on the adjustment direction and the adjustment amount to control the plate shape of the steel plate.

For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

The present application may also provide a computer-readable storage medium having at least one program code stored therein, the at least one program code being loaded and executed by a processor to implement operations performed by the method, based on the same inventive concept.

The application also provides an electronic device based on the same inventive concept, and referring to fig. 6, fig. 6 shows a schematic structural diagram of the electronic device in the embodiment of the application.

The electronic device comprises one or more memories 604, one or more processors 602 and at least one computer program (program code) stored on the memories 604 and executable on the processors 602, the processor 602 implementing the methods as described above when executing the computer program.

Where in FIG. 6, a bus architecture (represented by bus 600), bus 600 may include any number of interconnected buses and bridges, with bus 600 linking together various circuits, including one or more processors, represented by processor 602, and memory, represented by memory 604. Bus 600 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., as are well known in the art and, therefore, will not be described further herein. The bus interface 605 provides an interface between the bus 600 and the receiver 601 and the transmitter 605. The receiver 601 and the transmitter 605 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 602 is responsible for managing the bus 600 and general processing, while the memory 604 may be used to store data used by the processor 602 in performing operations.

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software that is executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit.

In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate components may or may not be physically separate, and components as control devices may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above description is only an example of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A hot rolled steel sheet shape control method, characterized by comprising:

after laminar cooling, judging whether the head of the steel plate reaches a side guide plate area or not by acquiring the head position of the steel plate;

if the head of the steel plate reaches the side guide plate area, detecting the center line of the head of the steel plate;

if the head center line deviates from the center line of the conveying roller, detecting the deviation direction and the deviation amount of the head center line, and determining the adjustment direction and the adjustment amount of the side guide plate according to the deviation direction and the deviation amount;

and adjusting the side guide plate based on the adjusting direction and the adjusting amount to control the plate shape of the steel plate.

2. The method of claim 1, wherein determining the adjustment direction and adjustment amount of the side guide based on the offset direction and the offset amount comprises:

determining the adjusting direction of the side guide plate according to the offset direction, and determining the adjusting amount of the side guide plate according to the offset amount;

if the offset direction deviates to the transmission side of the conveying roller way, the side guide plate is controlled by adopting a transmission side pressure mode;

and if the offset direction deviates to the working side of the conveying roller way, controlling the side guide plate by adopting a working side pressure mode.

3. The method of claim 1, wherein prior to acquiring the head position of the steel plate, the method further comprises:

detecting the offset direction and the offset of the head of the billet or the intermediate billet in the process of rough rolling the billet and finish rolling the intermediate billet, and determining the adjusting direction and the adjusting pressure of the pinch roll according to the offset direction and the offset;

if the offset direction of the head of the billet or the intermediate billet is the pinch roll driving side, increasing the pressure of the pinch roll working side so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side; if the offset direction of the head of the billet or the intermediate billet is the pinch roll working side, the pressure of the pinch roll driving side is increased so that the pressure of the pinch roll driving side is equal to the pressure of the pinch roll working side.

4. The method of claim 1, wherein prior to acquiring the head position of the steel plate, the method further comprises:

in the process of temperature control of the steel billet or the intermediate billet or the steel plate, respectively obtaining a heating furnace outlet, a roughing mill inlet, a finishing mill inlet and corresponding temperature differences in the width direction of the steel billet or the intermediate billet or the steel plate after ultra-fast cooling;

and correspondingly adjusting the furnace temperature of the heating furnace, the dephosphorization water flow in the roughing mill and the cooling water flow corresponding to the roughing mill, the finishing mill and the ultra-fast cooling section if the temperature difference is larger than a preset threshold value according to each temperature difference.

5. The method of claim 4, wherein the predetermined threshold is 40 ℃.

6. The method of claim 1, wherein prior to acquiring the head position of the steel plate, the method further comprises:

in the course of rough rolling of billet or finish rolling of intermediate billet, the transverse vibration of rough rolling is controlled to be less than or equal to 20mm, and the transverse vibration of finish rolling is controlled to be less than or equal to 40mm.

7. The method according to claim 1, wherein the method further comprises:

before the billet is rolled, the equipment and the billet are subjected to surface treatment, so that the difference of the horizontal planes of the upper plane and the lower plane of the steel plate is controlled.

8. A hot rolled steel sheet shape control apparatus, characterized by comprising:

the judging unit is used for judging whether the head of the steel plate reaches the side guide plate area or not by acquiring the head position of the steel plate after laminar cooling;

a first detecting unit for detecting a head center line of the steel plate if the head of the steel plate reaches a side guide area;

a second detecting unit for detecting a deviation direction and a deviation amount of the head center line if the head center line deviates from the center line of the transfer roller, and determining an adjustment direction and an adjustment amount of the side guide according to the deviation direction and the deviation amount;

and the adjusting unit is used for adjusting the side guide plate based on the adjusting direction and the adjusting amount so as to control the plate shape of the steel plate.

9. A computer readable storage medium having stored therein at least one program code loaded and executed by a processor to implement operations performed by the method of any of claims 1 to 7.

10. An electronic device comprising one or more processors and one or more memories, the one or more memories having stored therein at least one piece of program code that is loaded and executed by the one or more processors to implement the operations performed by the method of any of claims 1-7.