Speed compensation method under hot continuous rolling lubrication rolling

Abstract

The invention discloses a speed compensation method under hot continuous rolling lubrication rolling, and belongs to the technical field of metallurgical automation control, and the method comprises the following steps: determining a rack which is put into use for lubrication rolling, and recording the rack as a current rack; an adjacent rack in front of the current rack is recorded as a previous rack, and an adjacent rack behind the current rack is recorded as a next rack; determining rolling process parameters of lubrication rolling and starting time and stopping time of lubrication rolling; on the basis of the rolling process parameters, the speed compensation amount of the previous rack and the speed compensation amount of the next rack are calculated correspondingly; after lubrication rolling is started, speed compensation is conducted on the front rack and the rear rack; and after lubrication rolling is stopped, speed compensation of the front rack and the rear rack is cancelled. The problems of width narrowing, thickness fluctuation and rolling instability caused by lubrication rolling in hot continuous rolling are solved, and the method has positive significance in improving the rolling stability and improving the strip steel quality.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical automation control, in particular to a speed compensation method under hot continuous rolling lubrication rolling. Background Art

[0002] In the field of plate rolling, in recent years, the use of lubricated rolling methods in hot rolling has reduced energy consumption and improved the surface quality of strip steel. However, during the use of lubricated rolling, during the rolling process, and when it stops, it reduces the friction between the rolls and the strip steel, changes the flow rate between the stands, and has a certain impact on the rolling stability and the quality of the finished strip steel. Therefore, for the application of lubricated rolling in hot rolling, the corresponding stand speed compensation is obtained based on the data such as the amount of lubricated rolling oil used and the angle of the looper, which is of positive significance for solving the rolling instability and strip steel quality problems caused by such lubricated rolling.

[0003] However, currently in the existing technology, there is no solution to achieve speed compensation in the application of lubricated rolling in hot rolling to solve the problems of rolling stability and strip quality during lubricated rolling. Summary of the invention

[0004] The invention provides a speed compensation method under lubricating rolling in hot continuous rolling, so as to solve the technical problem that the rolling stability and strip quality are affected after the lubricating rolling in hot continuous rolling is put into use.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] In one aspect, the present invention provides a speed compensation method under hot rolling lubrication rolling, comprising:

[0007] Determine the stand to be put into use for lubrication rolling, and record it as the current stand; and in accordance with the rolling sequence, record the adjacent stand before the current stand as the previous stand, and record the adjacent stand after the current stand as the next stand;

[0008] Determine the rolling process parameters of lubrication rolling, as well as the start and stop timing of lubrication rolling;

[0009] Based on the rolling process parameters of lubrication rolling, the speed compensation of the front stand and the rear stand are calculated respectively;

[0010] After the lubrication rolling is started, the speed compensation is performed on the previous stand based on the real-time calculated amount of the speed compensation amount of the previous stand, and the speed compensation is performed on the next stand based on the real-time calculated amount of the speed compensation amount of the next stand;

[0011] After the lubrication rolling stops, the speed compensation of the preceding and succeeding stands is cancelled.

[0012] Furthermore, the rolling process parameters of the lubrication rolling include: the real-time oil volume of the lubrication rolling of the current frame, the upper limit of the lubrication rolling oil volume of the current frame, the lower limit of the lubrication rolling oil volume of the current frame, the actual angle of the front loop of the current frame, the set angle of the front loop of the current frame, the actual angle of the rear loop of the current frame, and the set angle of the rear loop of the current frame.

[0013] Furthermore, the calculation formula of the speed compensation amount of the previous rack is:

[0014]

[0015] Among them, V cf Indicates the speed compensation of the previous rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current rack lubrication rolling oil volume; k luf Indicates the previous stand lubrication rolling compensation coefficient; L af Indicates the actual angle of the current rack front looper; L saf Indicates the current frame front loop setting angle; k lpf Indicates the current frame front loop angle compensation coefficient; T A To control the cycle.

[0016] Furthermore, k luf The value range of k is 0~0.25; lpf The value range of T is 0~0.5; A The value range is 1ms to 32ms.

[0017] Furthermore, the calculation formula of the speed compensation amount of the latter rack is:

[0018]

[0019] Among them, V cb Indicates the speed compensation of the next rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current rack lubrication rolling oil volume; k lub Indicates the lubrication rolling compensation coefficient of the next stand; L ab Indicates the actual angle of the current rack rear loop; L sab Indicates the current rack rear loop setting angle; k lpb Indicates the current rack rear loop angle compensation coefficient; T A Indicates the control period.

[0020] Furthermore, k lubThe value range of k is 0~0.25; lpb The value range of T is 0~0.5; A The value range is 1ms to 32ms.

[0021] Further, after the lubrication rolling is started, the speed compensation is performed on the previous stand based on the real-time calculated amount of the speed compensation amount of the previous stand, and the speed compensation is performed on the next stand based on the real-time calculated amount of the speed compensation amount of the next stand, including:

[0022] After lubrication rolling starts, wait for time T sf , the speed compensation of the previous rack is increased from the initial value 0 to the acceleration a sf Real-time calculation of speed compensation added to the previous rack;

[0023] After lubrication rolling starts, wait for time T sb , the speed compensation of the next rack is increased from the initial value 0 to the acceleration a sb Increase the real-time calculation of the speed compensation amount to the next rack.

[0024] Furthermore, T sf The value range is 0 to 500, in ms; a sf The value range is 0 to 1, and the unit is m / s 2 ; T sb The value range is 0 to 500, in ms; a sb The value range is 0 to 1, and the unit is m / s 2 .

[0025] Furthermore, after the lubrication rolling stops, the speed compensation of the previous stand and the next stand is cancelled, including:

[0026] After the lubrication rolling stops, wait for the time T ff , the speed compensation of the previous rack is calculated by the real-time calculation of the speed compensation of the previous rack, with acceleration a ff Decrease to 0;

[0027] After the lubrication rolling stops, wait for the time T fb , the speed compensation of the next rack is calculated by the real-time calculation of the speed compensation of the next rack, with acceleration a fb Decrease to 0.

[0028] Furthermore, T ff The value range is 0 to 500, in ms; a ff The value range is 0 to 1, and the unit is m / s 2 ; T fb The value range is 0 to 500, in ms; a fbThe value range is 0 to 1, and the unit is m / s 2 .

[0029] On the other hand, the present invention further provides an electronic device, comprising a processor and a memory; wherein the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the above method.

[0030] In yet another aspect, the present invention further provides a computer-readable storage medium, wherein at least one instruction is stored in the storage medium, and the instruction is loaded and executed by a processor to implement the above method.

[0031] The beneficial effects brought about by the technical solution provided by the present invention include at least:

[0032] The speed compensation method under hot rolling lubrication rolling provided by the present invention corrects the speed between frames to make the second flow rate between frames more accurate, solves the problems of width narrowing, thickness fluctuation and rolling instability caused by the use of lubrication rolling in hot rolling, and has positive significance for improving rolling stability and improving strip quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a schematic flow chart of a speed compensation method under hot rolling lubrication rolling provided by an embodiment of the present invention;

[0035] Figure 2 is a detailed flow chart of a speed compensation method under hot rolling lubrication rolling provided by an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of a rolling device using a lubrication rolling method provided by an embodiment of the present invention;

[0037] Figure 4 It is a system block diagram of an electronic device provided by an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 21. Rolling oil nozzle; 22. Looper; 23. Strip steel; 24. Working roll; 25. Support roll;

[0040] 31. Previous rack; 32. Current rack; 33. Next rack. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] First of all, it should be noted that in the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplarily" is intended to present the concept in a concrete way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0043] First embodiment

[0044] This embodiment provides a speed compensation method for hot rolling lubrication rolling, which can be implemented by an electronic device. The execution process of the method is as follows: Figure 1 As shown, the following steps are included:

[0045] S1, determine the rack to be put into use for lubrication rolling, record it as the current rack; and according to the rolling sequence, record the adjacent rack located in front of the current rack as the previous rack, and record the adjacent rack located behind the current rack as the next rack;

[0046] S2, determining rolling process parameters of lubrication rolling, and starting timing and stopping timing of lubrication rolling;

[0047] Among them, the rolling process parameters of lubrication rolling include: the real-time oil volume of lubrication rolling of the current frame, the upper limit of the lubrication rolling oil volume of the current frame, the lower limit of the lubrication rolling oil volume of the current frame, the actual angle of the front loop of the current frame, the set angle of the front loop of the current frame, the actual angle of the rear loop of the current frame, and the set angle of the rear loop of the current frame.

[0048] S3, based on the rolling process parameters of lubrication rolling, respectively calculating the speed compensation amount of the front stand and the rear stand;

[0049] It should be noted that the above "speed" refers to the real-time speed during the rolling process, that is, the actual speed of the rolling mill after the lubrication rolling is put into use. If it is divided according to the threading speed, the speed during acceleration, the rolling speed, the speed during deceleration, and the steel throwing speed, then the time when lubrication rolling is put into use is generally still at the threading speed, but because it lasts for a long time, it will run through the entire speed increase and decrease process, so the speed compensation amount is corrected based on the actual speed of the rolling mill.

[0050] Specifically, in this embodiment, Figure 2 As shown, the above S3 includes the following steps:

[0051] S31, according to the amount of lubricating rolling oil used when the current stand is put into lubrication rolling, the actual angle of the front looper of the current stand, and the set angle of the front looper of the current stand, the speed compensation amount of the previous stand is calculated, and the formula is as follows:

[0052]

[0053] Among them, V cf Indicates the speed compensation of the previous rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current rack lubrication rolling oil volume; k luf Indicates the previous stand lubrication rolling compensation coefficient, and its value range is 0~0.25; L af L is the actual angle of the current frame front looper; saf Set the angle for the current rack front looper; k lpf is the current frame front loop angle compensation coefficient, and its value range is 0~0.5; T A It is the controller execution cycle, and its value range is 1 to 32, in ms.

[0054] S32, according to the amount of lubricating rolling oil used when the current stand is put into lubricating rolling, the actual angle of the rear looper of the current stand, and the set angle of the rear looper of the current stand, the speed compensation amount of the next stand is calculated, and the formula is as follows:

[0055]

[0056] Among them, V cb Indicates the speed compensation of the next rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current rack lubrication rolling oil volume; k lub It indicates the lubrication rolling compensation coefficient of the next stand, and its value range is 0~0.25; L ab Indicates the actual angle of the current rack rear loop; L sab Set the angle for the current rack rear looper; k lpb is the compensation coefficient of the current rack rear loop angle, and its value range is 0~0.5; T A It is the controller execution cycle, and its value range is 1 to 32, in ms.

[0057] S4, after the lubrication rolling is started, the speed compensation is performed on the previous rack based on the real-time calculated amount of the speed compensation amount of the previous rack, and the speed compensation is performed on the next rack based on the real-time calculated amount of the speed compensation amount of the next rack;

[0058] Specifically, in this embodiment, the above S4 includes the following steps:

[0059] S41, after lubrication rolling starts, wait for time T sf , the speed compensation value V of the previous rack cf From the initial value 0 to the acceleration a sf Increase to real-time computing capacity; among them, the front rack waiting time T sf , its value range is 0~500, unit is ms; front frame acceleration a sf , its value range is 0~1, and its unit is m / s 2 .

[0060] S42, after lubrication rolling starts, wait for time T sb , the speed compensation value V of the next rack cb From the initial value 0 to the acceleration a sb Increase to real-time computing capacity; among them, the rear rack waiting time T sb , its value range is 0~500, unit is ms; rear frame acceleration a sb , its value range is 0~1, and its unit is m / s 2 .

[0061] S5, after the lubrication rolling stops, the speed compensation of the previous stand and the next stand is cancelled.

[0062] Specifically, in this embodiment, Figure 2 As shown, the above S5 includes the following steps:

[0063] S51, after the lubrication rolling stops, wait for time T ff , the speed compensation value V of the previous rack cf The real-time calculation is based on the acceleration a ff Reduced to 0; where the front rack waiting time T ff , its value range is 0~500, unit is ms; front frame acceleration a ff , its value range is 0~1, and its unit is m / s 2 .

[0064] S52, after the lubrication rolling stops, wait for a period of time T fb , the speed compensation value V of the next rack cb The real-time calculation is based on the acceleration a fb Reduced to 0; where the rear rack waiting time T fb , its value range is 0~500, unit is ms; rear frame acceleration a fb , its value range is 0~1, and its unit is m / s 2 .

[0065] In summary, this embodiment provides a speed compensation method under hot rolling lubrication rolling. The speed compensation method under hot rolling lubrication rolling corrects the speed between frames to make the second flow rate between frames more accurate, solves the width narrowing, thickness fluctuation, and rolling instability problems caused by the use of lubrication rolling in hot rolling, and is of positive significance to improving rolling stability and improving strip quality.

[0066] Second embodiment

[0067] In this embodiment, the speed compensation method of hot rolling lubrication rolling of the present invention is applied to a hot rolling finishing mill, and the F2 finishing mill is taken as an example to further illustrate the implementation process of the method of the present invention. The structure of the rolling equipment using the lubrication rolling method is as follows: Figure 3 shown.

[0068] Specifically, in this application scenario, the method of the present invention is operated according to the following steps:

[0069] (1) The strip 23 is inserted from the previous frame 31 to the current frame 32, and then to the next frame 33;

[0070] (2) Assuming that after the strip 23 is threaded, the rolling oil nozzle 21 starts to spray oil and start lubrication rolling; assuming that the current rolling oil volume is 100 ml / min, the upper limit of the allowed spray rolling oil volume is 600 ml / min, the lower limit of the allowed spray rolling oil volume is 50 ml / min, the front frame lubrication rolling compensation coefficient of the lubricating rolling stand is 0.1, the current frame front looper angle compensation coefficient is 0.15, the front looper set angle is 23°, the actual angle is 22°, the controller execution cycle is 4 ms, and the calculated front frame speed compensation of the lubricating rolling stand is 0.056 m / s, and since the front looper angle changes in real time, its speed compensation also changes in real time with the looper angle;

[0071] (3) Similarly, assuming that the lubrication rolling compensation coefficient of the rear stand of the lubrication rolling stand is 0.2, the compensation coefficient of the rear looper angle of the current stand is 0.25, the set angle of the rear looper is 22°, the actual angle is 23°, the controller execution cycle is 4ms, and the speed compensation of the rear stand of the lubrication rolling stand is calculated to be 0.099m / s. Since the rear looper angle changes in real time, its speed compensation also changes in real time with the looper angle.

[0072] (4) Waiting time 200ms, the rack speed compensation before the lubrication rolling rack is put into use is increased from the initial value 0 to an acceleration of 0.1m / s 2 Increase to 0.056m / s; wait time 250ms, after the lubrication rolling stand is put into use, the stand speed compensation amount is increased from the initial value 0 to the acceleration 0.15m / s 2 Increased to 0.099m / s;

[0073] (5) Assuming that the tail of the strip is about to reach the first stand of the finishing rolling mill, the lubrication rolling is stopped, and the waiting time is 300ms. The real-time compensation value of the stand speed before the lubrication rolling stand is increased by 0.15m / s. 2 Restore to 0; wait for 350ms, and use the lubrication rolling stand to compensate the real-time speed of the stand at an acceleration of 0.2m / s 2 Restore to 0.

[0074] Third embodiment

[0075] This embodiment provides an electronic device, such as Figure 4 As shown, the electronic device includes: a processor and a memory; wherein the processor and the memory can be connected via a communication bus; the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the method of the first embodiment. In addition, the electronic device may also include a transceiver, the processor and the transceiver can be connected via a communication bus, and the transceiver is used to communicate with other devices.

[0076] Next, combine Figure 4 The following is a detailed introduction to the various components of the electronic device:

[0077] Among them, the processor is the control center of the electronic device, and the electronic device may include multiple processors, each of which may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may be a processor or a general term for multiple processing elements. For example, the processor is one or more central processing units (CPUs), or other general-purpose processors, application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement an embodiment of the present invention, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (field programmable gate arrays, FPGAs), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor may execute various functions of the electronic device by running or executing software programs stored in the memory and calling data stored in the memory.

[0078] In a specific implementation, as an embodiment, the processor may include one or more CPUs, such as Figure 4 The CPU0 and CPU1 shown in the figure are, of course, only exemplary.

[0079] The memory is used to store the software program for executing the solution of the present invention, and the execution is controlled by the processor. The specific implementation method can refer to the above method embodiment and will not be repeated here.

[0080] Optionally, the memory may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be integrated with the processor or exist independently and accessed through the interface circuit ( Figure 4 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0081] The transceiver may include a receiver and a transmitter ( Figure 4 The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function. The transceiver can be integrated with the processor or exist independently and communicate with the electronic device through the interface circuit ( Figure 4 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0082] In addition, it should be noted that Figure 4 The structure of the electronic device shown in the figure does not constitute a limitation on the device, and the actual device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. In addition, the technical effects achieved by the electronic device when executing the method of the first embodiment above can refer to the technical effects described in the first embodiment above, so they are not repeated here.

[0083] Fourth embodiment

[0084] This embodiment provides a computer-readable storage medium, which stores at least one instruction, and the instruction is loaded and executed by a processor to implement the method of the first embodiment. The computer-readable storage medium may be a ROM, a random access memory, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc. The instructions stored therein may be loaded by a processor in a terminal to execute the method.

[0085] In addition, it should be noted that the present invention can be provided as a method, an apparatus or a computer program product. Therefore, the embodiment of the present invention can be in the form of a full or partial hardware embodiment, a full or partial software embodiment or an embodiment combining software and hardware. Moreover, when implemented using software, the embodiment of the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center containing one or more available media sets. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state hard disk.

[0086] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0087] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable terminal device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0088] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements. In addition, the term "and / or" is only an association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone, wherein A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding. "At least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can be represented by: a, b, c, ab, ac, bc or abc, where a, b, c can be single or plural.

[0089] In addition, it can be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0090] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0091] In several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of functional modules / units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0092] If the method is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0093] Finally, it should be noted that the above is only a preferred embodiment of the present invention. It should be pointed out that although the preferred embodiment of the present invention has been described, for ordinary technicians in this technical field, once the basic creative concept of the present invention is known, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the attached claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims

1. A speed compensation method for hot rolling lubrication rolling, characterized in that: include: Determine the stand to be put into use for lubrication rolling and record it as the current stand; According to the rolling sequence, the adjacent rack located before the current rack is recorded as the previous rack, and the adjacent rack located after the current rack is recorded as the next rack; Determine the rolling process parameters of lubrication rolling, as well as the start and stop timing of lubrication rolling; Based on the rolling process parameters of lubrication rolling, the speed compensation of the front stand and the rear stand are calculated respectively; After the lubrication rolling is started, the speed compensation is performed on the previous stand based on the real-time calculated amount of the speed compensation amount of the previous stand, and the speed compensation is performed on the next stand based on the real-time calculated amount of the speed compensation amount of the next stand; After the lubrication rolling stops, the speed compensation of the preceding and succeeding stands is cancelled.

2. The speed compensation method under hot rolling lubrication rolling according to claim 1, characterized in that: The rolling process parameters of the lubrication rolling include: the real-time oil volume of the lubrication rolling of the current frame, the upper limit of the lubrication rolling oil volume of the current frame, the lower limit of the lubrication rolling oil volume of the current frame, the actual angle of the front looper of the current frame, the set angle of the front looper of the current frame, the actual angle of the rear looper of the current frame, and the set angle of the rear looper of the current frame.

3. The speed compensation method under hot rolling lubrication rolling according to claim 2, characterized in that: The calculation formula for the speed compensation of the previous rack is: Among them, V cf Indicates the speed compensation of the previous rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current stand lubrication rolling oil volume; k luf Indicates the previous stand lubrication rolling compensation coefficient; L af Indicates the actual angle of the current rack front looper; L saf Indicates the current frame front loop setting angle; k lpf Indicates the current frame front loop angle compensation coefficient; T A To control the cycle.

4. The speed compensation method under hot rolling lubrication rolling according to claim 3, characterized in that: k luf The value range of k is 0~0.25; lpf The value range of T is 0~0.5; A The value range is 1ms to 32ms.

5. The speed compensation method under hot rolling lubrication rolling according to claim 2, characterized in that: The calculation formula for the speed compensation of the rear rack is: Among them, V cb Indicates the speed compensation of the next rack; O lu Indicates the real-time oil volume of the current stand lubrication rolling; lumax Indicates the upper limit of the current rack lubrication rolling oil volume; lumin Indicates the lower limit of the current stand lubrication rolling oil volume; k lub Indicates the lubrication rolling compensation coefficient of the next stand; L ab Indicates the actual angle of the current rack rear loop; L sab Indicates the current rack rear loop setting angle; k lpb Indicates the current rack rear loop angle compensation coefficient; T A Indicates the control period.

6. The speed compensation method under hot rolling lubrication rolling according to claim 5, characterized in that: k lub The value range of k is 0~0.25; lpb The value range of T is 0~0.5; A The value range is 1ms to 32ms.

7. The speed compensation method under hot rolling lubrication rolling according to claim 1, characterized in that: After the lubrication rolling is started, the speed compensation is performed on the previous stand based on the real-time calculated amount of the speed compensation amount of the previous stand, and the speed compensation is performed on the next stand based on the real-time calculated amount of the speed compensation amount of the next stand, including: After lubrication rolling starts, wait for time T sf , the speed compensation of the previous rack is increased from the initial value 0 to the acceleration a sf Real-time calculation of speed compensation added to the previous rack; After lubrication rolling starts, wait for time T sb , the speed compensation of the next rack is increased from the initial value 0 to the acceleration a sb Increase the real-time calculation of the speed compensation amount to the next rack.

8. The speed compensation method under hot rolling lubrication rolling according to claim 7, characterized in that: T sf The value range is 0 to 500, in ms; a sf The value range is 0 to 1, and the unit is m / s 2 ; T sb The value range is 0 to 500, in ms; a sb The value range is 0 to 1, and the unit is m / s 2 .

9. The speed compensation method under hot rolling lubrication rolling according to claim 1, characterized in that: After the lubrication rolling stops, the speed compensation of the previous and next stands is cancelled, including: After the lubrication rolling stops, wait for the time T ff , the speed compensation of the previous rack is calculated by the real-time calculation of the speed compensation of the previous rack, with acceleration a ff Decrease to 0; After the lubrication rolling stops, wait for the time T fb , the speed compensation of the next rack is calculated by the real-time calculation of the speed compensation of the next rack, with acceleration a fb Decrease to 0.

10. The speed compensation method under hot rolling lubrication rolling according to claim 9, characterized in that: T ff The value range is 0 to 500, in ms; a ff The value range is 0 to 1, and the unit is m / s 2 ; T fb The value range is 0 to 500, in ms; a fb The value range is 0 to 1, and the unit is m / s 2 .

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