Accident handling method, device, medium and equipment

Abstract

The invention discloses an accident handling method and device, a medium and equipment, and the method comprises the steps that if a shutdown accident occurs in a finishing mill unit or a coiling unit, a pendulum shear is controlled to cut off a plate blank, and a continuous casting machine is controlled to decelerate; obtaining the thickness of an intermediate billet at an outlet of a third roughing mill; if the thickness of the intermediate billet is smaller than the first preset thickness, the roll gap of the third roughing mill is controlled to be increased to the target thickness, and the target thickness is larger than the first preset thickness; the first roughing mill, the tunnel furnace, the second roughing mill and the third roughing mill are controlled to decelerate; and if the speed of the third roughing mill is smaller than or equal to the first preset speed, the speeds of the tunnel furnace, the first roughing mill, the second roughing mill and the third roughing mill are controlled to be kept unchanged, and the crop shear is controlled to periodically break the intermediate billet. The steel flux of the third roughing mill is increased, and the probability that slabs produced by a continuous casting machine collide with the tails of the slabs of the roughing mill sets is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of multi-mode full continuous casting and rolling production line, in particular, relates to an accident handling method, device, medium and equipment. BACKGROUND

[0002] The rolling mode of the multi-mode full continuous casting and rolling production line is flexible, and has three rolling modes of single slab, half endless and endless, which includes a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head cutting shear, an intermediate heating device, a finishing rolling mill group and a coiling mill group arranged in sequence. When a shutdown accident occurs in the finishing rolling mill group and the coiling mill group, the swing shear cuts off the slab, and the head cutting shear repeatedly acts to break the intermediate slab produced by the rough rolling mill group. During this period, the rough rolling mill group needs to be slowed down.

[0003] However, if the thickness of the intermediate slab is small, the steel flux of the rough rolling mill group is low when the rough rolling mill group is slowed down, and the speed of the rough rolling mill group is too low, so the slab produced by the continuous casting machine is easy to hit the tail of the slab of the rough rolling mill group, causing the accident to expand. SUMMARY

[0004] Embodiments of the present application provide an accident handling method, device, medium and equipment, which are used to solve the technical problem that the speed of the rough rolling mill group is too low when the thickness of the intermediate slab is small, which is easy to cause the slab produced by the continuous casting machine to hit the tail of the slab of the rough rolling mill group.

[0005] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0006] According to a first aspect of the present application, an accident handling method is provided, which is applied to a multi-mode full continuous casting and rolling production line, the multi-mode full continuous casting and rolling production line includes a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head cutting shear, a finishing rolling mill group and a coiling mill group arranged in sequence, the rough rolling mill group includes a first rough rolling mill, a second rough rolling mill and a third rough rolling mill arranged in sequence, and the method includes: If a shutdown accident occurs in the finishing rolling mill group or the coiling mill group, the swing shear is controlled to cut off the slab, and the continuous casting machine is controlled to slow down; The thickness of the intermediate slab at the outlet of the third rough rolling mill is acquired; If the thickness of the intermediate slab is less than a first preset thickness, the roll gap of the third rough rolling mill is controlled to increase to a target thickness, and the target thickness is greater than the first preset thickness; The first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill are controlled to slow down; If the speed of the third rough rolling mill is less than or equal to the first preset speed, the speeds of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill are kept unchanged, and the head cutting shear is controlled to periodically break the intermediate blank.

[0007] In some embodiments of the present application, based on the foregoing scheme, the control of the speed reduction of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill comprises: obtaining the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at the current time and the target speed at the next time, and obtaining the current roll gap of the third rough rolling mill at the current time and the target roll gap at the next time, the target speed being less than the current speed; taking the ratio of the current roll gap and the target roll gap as a weighting coefficient; updating the target speed of the third rough rolling mill as the product of the weighting coefficient and the target speed; at the next time, controlling the speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to decrease from the current speed to the target speed.

[0008] In some embodiments of the present application, based on the foregoing scheme, the obtaining of the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at the current time and the target speed at the next time comprises: obtaining the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at the current time and the target speed of the first rough rolling mill at the next time; based on the principle of second flow balance, determining the target speeds of the tunnel furnace, the second rough rolling mill and the third rough rolling mill according to the target speed of the first rough rolling mill.

[0009] In some embodiments of the present application, based on the foregoing scheme, after the obtaining of the thickness of the intermediate blank at the outlet of the third rough rolling mill, the method further comprises: if the thickness of the intermediate blank is greater than or equal to the first preset thickness and less than a second preset thickness, the roll gap of the rough rolling mill at the end of the rough rolling mill group is kept unchanged, and the second preset thickness is the upper limit value of the thickness of the intermediate blank cut by the head cutting shear; performing the step of controlling the speed reduction of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill.

[0010] In some embodiments of the present application, based on the foregoing scheme, after the obtaining of the thickness of the intermediate blank at the outlet of the third rough rolling mill, the method further comprises: if the thickness of the intermediate blank is greater than or equal to a second preset thickness, the second preset thickness being an upper limit value of the thickness of the intermediate blank sheared by the head shear, the second preset thickness being greater than the target thickness; controlling the first rough rolling mill, the second rough rolling mill and the third rough rolling mill to stop.

[0011] In some embodiments of the present application, based on the foregoing scheme, the head shear comprises a driving motor, and after the control of the head shear to periodically break the intermediate blank, the method further comprises: if the heat generation of the driving motor is greater than or equal to a preset heat generation or the head shear receives a first control signal for controlling the head shear to stop or the head shear receives a second control signal for controlling the rough rolling mill group to stop, the driving motor is controlled to stop, so that the head shear stops breaking the intermediate blank.

[0012] In some embodiments of the present application, based on the foregoing scheme, a loop is arranged between the second rough rolling mill and the third rough rolling mill, and the control of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed comprises: if the angle of the loop is not equal to a target angle, the speed of the third rough rolling mill is adjusted to make the angle of the loop equal to the target angle.

[0013] According to a second aspect of the present application, an accident handling device is provided, which is applied to a multi-mode full-continuous casting and rolling production line, the multi-mode full-continuous casting and rolling production line comprising a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head shear, a finish rolling mill group and a coiling mill group arranged in sequence, the rough rolling mill group comprising a first rough rolling mill, a second rough rolling mill and a third rough rolling mill arranged in sequence, and the device comprising: a first control unit, if a stop accident occurs in the finish rolling mill group or the coiling mill group, controlling the swing shear to cut off the slab and controlling the continuous casting machine to reduce the speed; a first acquisition unit, acquiring the thickness of the intermediate blank at the outlet of the third rough rolling mill; a second control unit, if the thickness of the intermediate blank is less than a first preset thickness, controlling the roll gap of the third rough rolling mill to increase to a target thickness, the target thickness being greater than the first preset thickness; a third control unit, controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed; a fourth control unit, if the speed of the third rough rolling mill is less than or equal to a first preset speed, controlling the speed of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill to remain unchanged, and controlling the head shear to periodically break the intermediate blank.

[0014] According to a third aspect of the present application, a computer readable storage medium is provided, having stored thereon a computer program comprising executable instructions which, when executed by a processor, implement the method according to any one of the embodiments of the first aspect of the present application.

[0015] According to a fourth aspect of the present application, an electronic device is provided, comprising: one or more processors; a memory for storing executable instructions of the processors, which, when executed by the one or more processors, cause the one or more processors to implement the method according to any one of the embodiments of the first aspect of the present application.

[0016] The beneficial effects of the present application are as follows: When a breakdown accident occurs in the finishing mill train or the coiling train, the plate blank is cut off by the swing shear, and the speed of the continuous casting machine is reduced. If the thickness of the intermediate blank at the outlet of the third rough rolling mill is too small, it indicates that the steel flux of the third rough rolling mill is too low. Therefore, the roll gap of the third rough rolling mill is increased, that is, the steel flux of the third rough rolling mill is increased. During the process of reducing the speed of the third rough rolling mill to the first preset speed, the speed of the rough rolling mill train is not too low, thereby effectively reducing the probability that the plate blank produced by the continuous casting machine collides with the tail of the plate blank in the rough rolling mill train.

[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings: Figure 1 A schematic diagram of a multi-mode full continuous casting and rolling production line is shown; Figure 2 A flowchart of an accident handling method in an embodiment of the present application is shown; Figure 3 A block diagram of an accident handling device in an embodiment of the present application is shown; Figure 4 A schematic diagram of a computer readable storage medium in an embodiment of the present application is shown; Figure 5 A schematic diagram of the system structure of an electronic device in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] Figure 1 A schematic diagram of a multi-mode full continuous casting and rolling production line is shown,Figure 1 In the figure, 1 - continuous casting machine, 2 - continuous casting machine area slab, 3 - pendulum shear, 4 - rough rolling mill area slab, 5 - tunnel furnace, 6 - first rough rolling mill, 7 - first loop, 8 - second rough rolling mill, 9 - second loop, 10 - third rough rolling mill, 11 - head cutting shear, 12 - waste hopper, 13 - broken slab, 14 - intermediate heating device, 15 - finishing rolling mill, 16 - coiling mill, see Figure 1 The multi-mode full continuous casting and rolling production line is described as follows: The multi-mode full continuous casting and rolling production line comprises a continuous casting machine, a pendulum shear, a tunnel furnace, a first rough rolling mill, a first loop, a second rough rolling mill, a second loop, a third rough rolling mill, a head cutting shear, an intermediate heating device, a finishing rolling mill and a coiling mill arranged in sequence. The slab produced by the continuous casting machine passes through the pendulum shear, the tunnel furnace, the first rough rolling mill, the first loop, the second rough rolling mill, the second loop and the third rough rolling mill in sequence to become an intermediate billet, and then passes through the head cutting shear, the intermediate heating device, the finishing rolling mill and the coiling mill. When an accident occurs in the finishing rolling mill and the rough rolling mill, the slab is cut off by the pendulum shear, and the head cutting shear is rotated. The slab is broken once every half rotation of the head cutting shear, that is, the slab is broken once every interval of half rotation of the head cutting shear. The broken slab enters the waste hopper. Since the volume of the waste hopper is limited, if the speed through the head cutting shear is fast and the length of the broken slab is long, it is difficult to enter the waste hopper. Therefore, the speed of the third rough rolling mill needs to be limited so that the length of the broken slab by the head cutting shear is less than the length of the waste hopper in the running direction of the slab, that is, less than the length of the waste hopper in the left-right direction of the figure. Figure 1

[0020] Figure 2 A flow chart of an accident handling method in the embodiment of the application is shown, see Figure 1 An accident handling method is provided, which is applied to a multi-mode full continuous casting and rolling production line. The multi-mode full continuous casting and rolling production line comprises a continuous casting machine, a pendulum shear, a tunnel furnace, a rough rolling mill, a head cutting shear, a finishing rolling mill and a coiling mill arranged in sequence. The rough rolling mill comprises a first rough rolling mill, a second rough rolling mill and a third rough rolling mill arranged in sequence. The method comprises at least steps S1 to S5, which are described in detail as follows: In step S1, if a shutdown accident occurs in the finishing rolling mill or the coiling mill, the slab is cut off by the pendulum shear and the continuous casting machine is controlled to reduce the speed.

[0021] In some embodiments, after the shutdown accident occurs in the finishing rolling mill or the coiling mill and before the slab is cut off by the pendulum shear and the continuous casting machine is controlled to reduce the speed, the method further comprises sending a shutdown accident signal to the continuous casting machine, the rough rolling mill and the head cutting shear.

[0022] ​It should be noted that when the finishing rolling mill group has a stop accident, the finishing rolling mill group sends a stop accident signal; when the coiling mill group has a stop accident, the coiling mill group sends a stop accident signal.

[0023] In some embodiments, the control of the swing shear cutting the slab and the control of the speed reduction of the continuous casting machine comprises: receiving a stop accident signal, controlling the speed reduction of the continuous casting machine and sending a cutting control signal to the swing shear, and according to the cutting control signal, controlling the swing shear to cut the slab.

[0024] In step S2, the thickness of the intermediate slab at the outlet of the third rough rolling mill is obtained.

[0025] In step S3, if the thickness of the intermediate slab is less than a first preset thickness, the roll gap of the third rough rolling mill is controlled to increase to a target thickness, and the target thickness is greater than the first preset thickness.

[0026] In some embodiments, the control of the roll gap of the third rough rolling mill to increase to a target thickness comprises: increasing the roll gap of the third rough rolling mill from a current thickness to a target thickness at a preset thickness change rate.

[0027] For example, the current thickness is 10 mm, the thickness change rate is 1 mm / s, and the target thickness is 24 mm. According to the thickness change rate of 1 mm / s, the roll gap of the third rough rolling mill is increased from 10 mm to 24 mm, which takes (24-10) ÷ 1 = 14 s.

[0028] In step S4, the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill are controlled to reduce speed. In step S5, if the speed of the third rough rolling mill is less than or equal to a first preset speed, the speed of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill is controlled to remain unchanged, and the intermediate slab is controlled to be periodically cut by the head cutting shear. The first preset speed can be 0.5 m / s.

[0029] In some embodiments, during the control of the speed reduction of the continuous casting machine, the speed of the continuous casting machine is controlled to be less than the speed of the tunnel furnace.

[0030] In some embodiments, the controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce speed comprises: obtaining a current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a current time and a target speed at a next time, and obtaining a current roll gap of the third rough rolling mill at the current time and a target roll gap at the next time, the target speed being less than the current speed; taking a ratio of the current roll gap and the target roll gap as a weighting coefficient; updating the target speed of the third rough rolling mill to a product of the weighting coefficient and the target speed; and controlling the speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce from the current speed to the target speed at the next time.

[0031] In this way, the target speed of the third rough rolling mill is compensated according to the change of the roll gap of the third rough rolling mill. If the target roll gap is smaller than the current roll gap, the target speed of the third rough rolling mill is increased. If the target roll gap is equal to the current roll gap, the target speed of the third rough rolling mill is kept unchanged, which can also be understood as not compensating the target speed of the third rough rolling mill. If the target roll gap is larger than the current roll gap, the target speed of the third rough rolling mill is decreased.

[0032] In some embodiments, the obtaining the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at the current time and the target speed at the next time comprises: obtaining the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at the current time and the target speed of the first rough rolling mill at the next time; and determining the target speeds of the tunnel furnace, the second rough rolling mill and the third rough rolling mill according to the target speed of the first rough rolling mill based on the principle of second flow balance.

[0033] It should be noted that the principle of second flow balance can also be understood as the principle of steel flux balance, which indicates that the steel fluxes passing through the first rough rolling mill and the tunnel furnace, the second rough rolling mill and the third rough rolling mill per unit time are the same.

[0034] In some embodiments, when the first rough rolling mill is controlled to reduce speed at a constant speed, the target speed of the first rough rolling mill at the next time is obtained by: obtaining a speed change rate of the first rough rolling mill; taking a difference between the next time and the current time as a difference weighting coefficient; weighting the speed change rate based on the difference weighting coefficient to obtain a speed change amount; and taking a difference between the current speed of the first rough rolling mill and the speed change amount as the target speed of the first rough rolling mill.

[0035] In some embodiments, after the thickness of the intermediate billet at the outlet of the third rough rolling mill is obtained, the method further comprises: if the thickness of the intermediate billet is greater than or equal to the first preset thickness and less than a second preset thickness, controlling the roll gap of the rough rolling mill at the end of the rough rolling mill group to be unchanged, the second preset thickness being an upper limit value of the thickness of the intermediate billet cut by the head shear; and performing the step of controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed.

[0036] In some embodiments, after the thickness of the intermediate billet at the outlet of the third rough rolling mill is obtained, the method further comprises: if the thickness of the intermediate billet is greater than or equal to the second preset thickness, the second preset thickness being an upper limit value of the thickness of the intermediate billet cut by the head shear, the second preset thickness being greater than the target thickness; and controlling the first rough rolling mill, the second rough rolling mill and the third rough rolling mill to stop. The first preset thickness can be 0.5 times the second preset thickness, and the target thickness can be 0.8 times the second preset thickness. The second preset thickness can be understood as the maximum value of the allowable cutting thickness of the head shear.

[0037] In this way, when the thickness of the intermediate billet exceeds the maximum value of the allowable cutting thickness of the head shear, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill are controlled to stop, and the rough rolling mill group stops conveying the intermediate billet to the head shear.

[0038] In some embodiments, the head shear comprises a driving motor, and after the head shear is controlled to periodically break the intermediate billet, the method further comprises: if the heat generation of the driving motor is greater than or equal to a preset heat generation, or the head shear receives a first control signal for controlling the head shear to stop, or the head shear receives a second control signal for controlling the rough rolling mill group to stop, the driving motor is controlled to stop, so that the head shear stops breaking the intermediate billet.

[0039] In some embodiments, a loop is arranged between the second rough rolling mill and the third rough rolling mill, and the step of controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed comprises: if the angle of the loop is not equal to a target angle, the speed of the third rough rolling mill is controlled to be adjusted so that the angle of the loop is equal to the target angle. The loop can be the second loop 9 in Figure 1

[0040] ​In some embodiments, if the angle of the loop is not equal to the target angle, the speed of the third rough rolling mill is controlled to be adjusted, including: if the angle of the loop is greater than the target angle, the speed of the third rough rolling mill is controlled to be increased; if the angle of the loop is equal to the target angle, the speed of the third rough rolling mill is controlled to be kept unchanged; and if the angle of the loop is less than the target angle, the speed of the third rough rolling mill is controlled to be decreased.

[0041] In the present application, when a shutdown accident occurs in the finishing rolling mill group or the coiling mill group, the strip-shaped blank is cut by the swing shear, and the speed of the continuous casting machine is reduced. If the thickness of the intermediate blank at the outlet of the third rough rolling mill is smaller, it indicates that the steel flux of the third rough rolling mill is lower, and the roll gap of the third rough rolling mill is increased, that is, the steel flux of the third rough rolling mill is increased. In the process of reducing the speed of the third rough rolling mill to the first preset speed, the speed of the rough rolling mill group is not too low, effectively reducing the probability that the strip-shaped blank produced by the continuous casting machine collides with the tail of the strip-shaped blank in the rough rolling mill group.

[0042] Figure 3 A block diagram of an accident handling device in an embodiment of the present application is shown, referring to Figure 3 According to a second aspect of the present application, an accident handling device 100 is provided, which is applied to a multi-mode full continuous casting and rolling production line, the multi-mode full continuous casting and rolling production line comprising a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head cutting shear, a finishing rolling mill group and a coiling mill group which are sequentially distributed, the rough rolling mill group comprising a first rough rolling mill, a second rough rolling mill and a third rough rolling mill which are sequentially distributed, and the device comprising: A first control unit 101 is configured to control the swing shear to cut the strip-shaped blank and control the continuous casting machine to reduce the speed if a shutdown accident occurs in the finishing rolling mill group or the coiling mill group; A first acquisition unit 102 is configured to acquire the thickness of the intermediate blank at the outlet of the third rough rolling mill; A second control unit 103 is configured to control the roll gap of the third rough rolling mill to be increased to a target thickness if the thickness of the intermediate blank is smaller than a first preset thickness, the target thickness being greater than the first preset thickness; A third control unit 104 is configured to control the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed; A fourth control unit 105 is configured to control the speed of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill to be kept unchanged and control the head cutting shear to periodically cut the intermediate blank if the speed of the third rough rolling mill is smaller than or equal to a first preset speed.

[0043] Based on the same inventive concept, as a fourth aspect, the present application also provides a computer readable storage medium, having stored thereon a computer program, the computer program comprising executable instructions which, when executed by a processor, implement the method according to any of the embodiments of the first aspect of the present application.

[0044] In some possible implementation manners, each aspect of the present application can also be implemented as a program product in the form of a program code, which, when run on a terminal device, is used to cause the terminal device to perform the steps described in the "Exemplary Method" section above according to various exemplary embodiments of the present application.

[0045] Reference Figure 4 As shown, a program product 200 for implementing the above method according to the embodiments of the present application is described, which can adopt a portable compact disc read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited thereto, and in the present document, the readable storage medium can be any tangible medium containing or storing a program, which can be used or combined with an instruction execution system, device or apparatus.

[0046] The program product can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0047] The computer readable signal medium can include a data signal propagated in baseband or propagated as a carrier wave in a propagated data signal, in which the readable program code is carried. Such a propagated data signal can take on many forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The readable signal medium can also be any readable medium that is not a readable storage medium and that can transmit, propagate or transport the program for use by or in connection with an instruction execution system, apparatus or device.

[0048] The program code contained on the readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0049] The program code, which can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages, can be executed by processing unit 310. The program code can execute entirely on the user's computing device, partly on the user's computing device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, such as through the Internet using an Internet Service Provider.

[0050] As another aspect, the present application also provides an electronic device capable of implementing the above method.

[0051] Those skilled in the art can understand that various aspects of the present application can be implemented as a system, a method or a program product. Therefore, various aspects of the present application can be embodied as a whole hardware embodiment, a whole software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, which can be collectively referred to as "circuitry", "module" or "system" herein.

[0052] The electronic device 300 according to this embodiment of the present application will be described below with reference to Figure 5 Figure 5 The electronic device 300 shown is merely an example and should not impose any limitation on the function and scope of use of the embodiments of the present application.

[0053] As shown in Figure 5 The electronic device 300 is in the form of a general computing device. The components of the electronic device 300 can include, but are not limited to, the at least one processing unit 310 described above, the at least one storage unit 320 described above, and a bus 330 connecting different system components, including the storage unit 320 and the processing unit 310.

[0054] The storage unit stores program code which can be executed by the processing unit 310, so that the processing unit 310 performs the steps described in the "Embodiment Method" section of the present specification according to various exemplary embodiments of the present application.

[0055] The storage unit 320 can include a readable medium in the form of a volatile storage unit, such as a random access memory (RAM) 321 and / or a cache memory 322, and can further include a read-only memory (ROM) 323.​

[0056] Storage 320 can also include a number of software modules, such as operating system 324, application programs 325, other program modules 326, and program data 327.

[0057] Bus 330 can represent one or more of several types of bus structures, including a storage bus or bus controller, peripheral bus, graphics bus, processor or local bus using any of a variety of bus architectures.

[0058] Electronic device 300 can also communicate with one or more external devices 400 such as a keyboard or pointing device, using one or more I / O interfaces 350. I / O interface 350 can enable electronic device 300 to exchange information with other devices, for example, using a network connection. It should be appreciated that other hardware and / or software components that are not shown can also be included in electronic device 300. By way of example, electronic device 300 can also include one or more storage devices, such as disk drives, optical storage devices, and / or tape storage devices; one or more memory devices, including one or more of volatile memory, non-volatile memory, and / or removable storage devices; one or more processing devices, including one or more of microprocessors, digital signal processors, and / or graphics processing units; one or more operating systems; one or more applications programs; one or more Figure 5 As shown, network adapter 360 communicates with other modules of electronic device 300 via bus 330. It should be appreciated that although not shown, other hardware and / or software modules could be used in conjunction with electronic device 300. For example, a microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc. can be used in conjunction with electronic device 300.

[0059] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can 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 disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions can also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. Also, as technology evolves, the meaning of "processor" and "computing device" can evolve, and can be implemented in ways other than described herein.

[0060] The above merely provides an example of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall fall into the scope of claims of the present application.

Claims

1. An accident handling method, characterized by, The method is applied to a multi-mode full continuous casting and rolling production line, the multi-mode full continuous casting and rolling production line comprises a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head cutting shear, a finishing rolling mill group and a coiling mill group which are sequentially distributed, the rough rolling mill group comprises a first rough rolling mill, a second rough rolling mill and a third rough rolling mill which are sequentially distributed, and the method comprises the following steps: if a shutdown accident occurs in the finishing rolling mill group or the coiling mill group, the slab is cut off by the swing shear and the continuous casting machine is controlled to reduce the speed; the thickness of the intermediate slab at the outlet of the third rough rolling mill is obtained; if the thickness of the intermediate slab is less than a first preset thickness, the roll gap of the third rough rolling mill is controlled to increase to a target thickness, and the target thickness is greater than the first preset thickness; the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill are controlled to reduce the speed; if the speed of the third rough rolling mill is less than or equal to a first preset speed, the speed of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill is kept unchanged, and the head cutting shear is controlled to periodically cut off the intermediate slab.

2. The method of claim 1, wherein, the step of controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed comprises the following steps: the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a current time and the target speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a next time are obtained, and the current roll gap of the third rough rolling mill at the current time and the target roll gap of the third rough rolling mill at the next time are obtained, and the target speed is less than the current speed; the ratio of the current roll gap to the target roll gap is taken as a weighting coefficient; the target speed of the third rough rolling mill is updated to the product of the weighting coefficient and the target speed; at the next time, the speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill is controlled to decrease from the current speed to the target speed.

3. A method of handling an incident according to claim 2, characterized in that the step of obtaining the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a current time and the target speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a next time comprises the following steps: the current speed of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill at a current time and the target speed of the first rough rolling mill at a next time are obtained; based on the principle of second flow balance, the target speed of the tunnel furnace, the second rough rolling mill and the third rough rolling mill is determined according to the target speed of the first rough rolling mill.

4. The method of claim 1, wherein, after the step of obtaining the thickness of the intermediate slab at the outlet of the third rough rolling mill, the method further comprises the following steps: if the thickness of the intermediate slab is greater than or equal to the first preset thickness and less than a second preset thickness, the roll gap of the rough rolling mill at the end of the rough rolling mill group is kept unchanged, and the second preset thickness is an upper limit value of the thickness of the intermediate slab cut by the head cutting shear; the step of controlling the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed is performed.

5. The method of claim 1, wherein, after the step of obtaining the thickness of the intermediate slab at the outlet of the third rough rolling mill, the method further comprises the following steps: If the thickness of the intermediate blank is greater than or equal to a second preset thickness, the second preset thickness being an upper limit value of the thickness of the intermediate blank sheared by the head cutting shear, the second preset thickness being greater than the target thickness; The first rough rolling mill, the second rough rolling mill and the third rough rolling mill are controlled to stop.

6. The method of claim 1, wherein, The head cutting shear comprises a driving motor, and after the control of the head cutting shear to periodically break the intermediate blank, the method further comprises: If the heat generation of the driving motor is greater than or equal to a preset heat generation or the head cutting shear receives a first control signal for controlling the head cutting shear to stop or the head cutting shear receives a second control signal for controlling the rough rolling mill group to stop, the driving motor is controlled to stop, so that the head cutting shear stops breaking the intermediate blank.

7. The method of claim 1, wherein, A loop is arranged between the second rough rolling mill and the third rough rolling mill, and the control of the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed comprises: If the angle of the loop is not equal to a target angle, the speed of the third rough rolling mill is controlled to be adjusted, so that the angle of the loop is equal to the target angle.

8. An accident handling apparatus characterized by comprising: The device is applied to a multi-mode full continuous casting and rolling production line, the multi-mode full continuous casting and rolling production line comprising a continuous casting machine, a swing shear, a tunnel furnace, a rough rolling mill group, a head cutting shear, a finish rolling mill group and a coiling mill group arranged in sequence, the rough rolling mill group comprising a first rough rolling mill, a second rough rolling mill and a third rough rolling mill arranged in sequence, and the device comprising: A first control unit controls the swing shear to cut off the slab and controls the continuous casting machine to reduce the speed if a stoppage accident occurs in the finish rolling mill group or the coiling mill group; A first acquisition unit acquires the thickness of the intermediate blank at the outlet of the third rough rolling mill; A second control unit controls the roll gap of the third rough rolling mill to increase to a target thickness if the thickness of the intermediate blank is less than a first preset thickness, the target thickness being greater than the first preset thickness; A third control unit controls the first rough rolling mill, the tunnel furnace, the second rough rolling mill and the third rough rolling mill to reduce the speed; A fourth control unit controls the speed of the tunnel furnace, the first rough rolling mill, the second rough rolling mill and the third rough rolling mill to remain unchanged and controls the head cutting shear to periodically break the intermediate blank if the speed of the third rough rolling mill is less than or equal to a first preset speed.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program comprises executable instructions, which, when executed by a processor, implement the method of any one of claims 1-7.

10. An electronic device, comprising: Comprise: One or more processors; A memory for storing executable instructions of the processor, which, when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-7.

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