Hot rolling heating furnace tapping control method, device, equipment and medium

Abstract

The application discloses a hot-rolling heating furnace tapping control method, device, equipment and medium, and belongs to the technical field of metallurgy. The method comprises the following steps: obtaining the total target heating time and the total actual heating time of a slab in a heating furnace, and the segmented actual heating time of the slab in a heating section, the segmented target heating time of the heating section, the first slab quantity between the slab and the outlet of the heating section, and the second slab quantity between the slab and the outlet of the heating furnace; determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab quantity and the second slab quantity; and controlling the tapping of the heating furnace according to the target tapping rhythm. The target tapping rhythm determined by the method can make the tapping temperature or the end-of-section temperature of the slab heated by the heating furnace meet the requirements, improve the production quality, and ensure the production efficiency.

Description

Technical Field

[0001] This application relates to the field of metallurgical technology, and in particular to a method, apparatus, equipment and medium for controlling the tapping of steel from a hot rolling heating furnace. Background Technology

[0002] The capacity of a hot rolling production line is the most important factor affecting the profitability of a hot rolling mill, and it is also the lifeline of the mill. Therefore, all hot rolling production lines strive for maximum efficiency and productivity. Against this backdrop, automatic rolling rhythm control systems have emerged, which can improve the rolling pace.

[0003] Currently, some automatic rolling rhythm control systems first calculate the difference between the target heating time and the actual heating time of the slab, then calculate the ratio of this difference to the number of slabs to obtain the slab tapping rhythm. This allows them to control the slab tapping according to the tapping rhythm, thus improving the production efficiency of the heating furnace. The number of slabs refers to the number of slabs between the current slab and the heating furnace outlet.

[0004] However, the aforementioned automatic rolling rhythm control system focuses too much on improving production efficiency, which often leads to substandard slab exit temperatures or end-of-section temperatures for high-end steel products, such as high-strength steel, resulting in lower production quality. Summary of the Invention

[0005] In view of the above problems, this application is made to provide a method, apparatus, equipment and medium for controlling the tapping of hot-rolled heating furnaces to solve the above problems. When determining the target tapping rhythm, it not only considers the target heating time and actual heating time of the slab in the heating furnace, but also the segmented actual heating time and segmented target heating time in the heating section. That is, it fully considers the heating time of the slab in some heating sections. By controlling the tapping of the heating furnace according to the target tapping rhythm determined in this way, it can not only improve production efficiency, but also ensure that the tapping temperature of the slab and the end temperature of the heating section meet the requirements, thereby improving production quality.

[0006] In a first aspect, this application provides a method for controlling the tapping of steel from a hot-rolling heating furnace, the method comprising:

[0007] The total target heating time and total actual heating time of the slab in the heating furnace are obtained, as well as the segmented actual heating time of the slab in the heating section, the segmented target heating time of the heating section, the number of first slabs between the slab and the outlet of the heating section, and the number of second slabs between the slab and the outlet of the heating furnace.

[0008] The target steel tapping rhythm is determined based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab.

[0009] The steel tapping from the heating furnace is controlled according to the target tapping rhythm.

[0010] Optionally, determining the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab includes:

[0011] Obtain the width of the slab and the steel loading gap;

[0012] Based on the width and the steel loading gap, determine the number of third slabs that need to be transported out of the heating furnace outlet from the location of the slab;

[0013] Calculate the first downtime of the heating furnace from the current moment until the third number of slabs are shipped out, and the second downtime of the second number of slabs are shipped out;

[0014] The target steel tapping rhythm is determined based on the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab.

[0015] Optionally, determining the target steel tapping rhythm based on the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slabs, and the number of the second slabs includes:

[0016] The tapping rhythm of the heating furnace is determined based on the second downtime, the total target heating time, the total actual heating time, and the number of the second slabs.

[0017] The steel tapping rhythm of the heating section is determined based on the first downtime, the target heating time of the segment, the actual heating time of the segment, and the number of the first slabs.

[0018] The larger of the tapping rhythm of the heating furnace and the tapping rhythm of the heating section shall be used as the initial tapping rhythm.

[0019] The target steel tapping rhythm is determined based on the initial tapping rhythm.

[0020] Optionally, determining the tapping rhythm of the heating furnace based on the second downtime, the total target heating time, the total actual heating time, and the number of the second slabs includes:

[0021] The tapping rhythm of the heating furnace is determined according to the following formula:

[0022]

[0023] Among them, P 炉 The tapping rhythm of the heating furnace is represented by t1, the total target heating time is represented by t2, the total actual heating time is represented by t3, the second downtime is represented by n1, and the second slab quantity is represented by n1.

[0024] Optionally, determining the tapping rhythm of the current heating section based on the first downtime, the target heating time for each segment, the actual heating time for each segment, and the quantity of the first slab includes:

[0025] The tapping rhythm of the current heating section is determined according to the following formula:

[0026]

[0027] Among them, P 段 t4 represents the steel tapping rhythm of the current heating section, t5 represents the target heating time of the section, t6 represents the actual heating time of the section, and n2 represents the number of the first slabs.

[0028] Optionally, determining the target tapping rhythm based on the initial tapping rhythm includes:

[0029] Obtain the preset rolling mill output rhythm in the rolling mill control system;

[0030] The maximum of the initial tapping rhythm of all slabs in all heating furnaces on the rolling line and the rolling line tapping rhythm is taken as the target tapping rhythm.

[0031] Optionally, if the total target heating time is greater than a preset time threshold, the heating section includes a first heating section, a second heating section, and a homogenization section.

[0032] If the total target heating time is less than or equal to the time threshold, then the heating section includes the homogenization section.

[0033] Secondly, this application provides a hot-rolling heating furnace tapping control device, the device comprising:

[0034] The acquisition module is used to acquire the total target heating time and total actual heating time of the slab in the heating furnace, as well as the segmented actual heating time of the slab in the heating section, the segmented target heating time of the heating section, the number of first slabs between the slab and the outlet of the heating section, and the number of second slabs between the slab and the outlet of the heating furnace.

[0035] The determination module is used to determine the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab and the number of the second slab;

[0036] The control module is used to control the steel tapping of the heating furnace according to the target steel tapping rhythm.

[0037] Thirdly, this application provides an electronic device, including: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method as described in the first aspect.

[0038] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method described in the first aspect.

[0039] The technical solutions provided in this application embodiment have at least the following technical effects or advantages:

[0040] This application provides a method, apparatus, equipment, and medium for controlling steel tapping from a hot-rolled heating furnace. It acquires the total target heating time and total actual heating time of slabs in the heating furnace, as well as the segmented actual heating time of each slab in its heating section, the segmented target heating time of that section, the number of first slabs between the slab and the outlet of that heating section, and the number of second slabs between the slab and the furnace outlet. This allows for understanding the heating status and location of each slab. Based on the total target heating time, total actual heating time, segmented target heating time, segmented actual heating time, number of first slabs, and number of second slabs, a target tapping rhythm is determined. This fully considers the total heating time of the furnace and the heating time of some heating sections, making the target tapping rhythm more precise. Controlling the furnace tapping according to the target tapping rhythm ensures that the slab tapping temperature meets requirements and improves the furnace's production efficiency. The target tapping rhythm determined by this method ensures that the tapping temperature or end-of-section temperature of the slabs heated in the furnace meets requirements, improving production quality while maintaining production efficiency.

[0041] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 This is a flowchart of a hot-rolling heating furnace tapping control method provided in an embodiment of this application;

[0044] Figure 2 This is a structural block diagram of a hot rolling heating furnace tapping control device provided in an embodiment of this application. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0046] Figure 1 This is a flowchart of a hot-rolling heating furnace tapping control method provided in an embodiment of this application, such as... Figure 1 As shown, the method includes steps S110 to S130.

[0047] Step S110: Obtain the total target heating time and total actual heating time of the slab in the heating furnace, as well as the segmented actual heating time of the slab in its heating section, the segmented target heating time of its heating section, the number of first slabs between the slab and the outlet of its heating section, and the number of second slabs between the slab and the outlet of the heating furnace.

[0048] In this embodiment, the heating furnace includes multiple heating sections, which are arranged from the inlet to the outlet of the furnace as a preheating section, a first heating section, a second heating section, and a soaking section. The slabs in the heating furnace are numbered according to the loading order, with the first slab loaded being numbered 0, the second slab loaded being numbered 1, and so on.

[0049] The total target heating time is the target time for the slab to be heated in the furnace, and the segmented target heating time is the target time for the slab to be heated in each heating segment. Different heating segments may have different segmented target heating times. The total actual heating time is the total time the slab has been heated, calculated by subtracting the time the slab entered the furnace from the current time t. f The time difference is used to obtain the total actual heating time; the current position of the slab is collected in real time, and its heating segment is determined based on its position. The current heating segment is recorded as the heating segment. For example, if the slab is currently in heating segment one, then the heating segment is heating segment one. The segmented actual heating time is the time the slab has been heated in its current heating segment. This is calculated by subtracting the time t when the slab entered its current heating segment from the current time t.s The time difference is used to obtain the actual heating time for each segment. The total target heating time and the segmented target heating time for each heating segment are preset and can be directly called when needed.

[0050] For example, if a slab has the serial number 20, and slab 20 is currently in heating section one, which contains five slabs with serial numbers 17, 18, 19, 20, and 21, and there are three slabs (17, 18, and 19) between slab 20 and the outlet of section one, then the first slab quantity for slab 20 is 3. The same method can be used to calculate the first and second slab quantities for other serial numbers.

[0051] Optionally, if the total target heating time is greater than the preset time threshold, the heating segment includes the first heating segment, the second heating segment, and the homogenization segment; if the total target heating time is less than or equal to the time threshold, the heating segment includes the homogenization segment.

[0052] In this embodiment, if the total target heating time is greater than the time threshold, it indicates that the total target heating time is relatively long. In order to ensure the uniformity of slab heating within each heating section, the heating section includes a first heating section, a second heating section, and a soaking section. If the total target heating time is less than or equal to the time threshold, it indicates that the total target heating time is relatively short. In this case, the heating time of the slab in the soaking section should be maximized, so the heating section only includes the soaking section.

[0053] In other words, there are many slabs in the heating furnace, and each slab is in a different heating section at any given time. When the heating section includes the first heating section, the second heating section, and the soaking section, the target heating time and the actual heating time of each slab in the first heating section, the second heating section, and the soaking section need to be obtained. When the slab is in the preheating section, the corresponding target heating time and the actual heating time of each slab in the preheating section are not obtained. When the heating section only includes the soaking section, the target heating time and the actual heating time of each slab in the soaking section only need to be obtained. When the slab is in the first heating section, the second heating section, and the preheating section, the corresponding target heating time and the actual heating time of each slab in the preheating section are not obtained.

[0054] In this embodiment, step S110 is executed when the heating furnace is full. Specifically, a laser detector can be installed at the outlet of the heating furnace. When the laser detector is turned on, it indicates that there is already a slab at the outlet of the heating furnace, and the heating furnace is in a full state. Only at this time does the rolling rhythm calculation begin. Each time the laser detector is turned on, it will trigger a rolling rhythm calculation, that is, the steps S110 to S130 in this embodiment will be cycled once.

[0055] Step S120: Determine the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of first slabs, and the number of second slabs.

[0056] In this embodiment, when determining the target steel tapping rhythm, not only the total target heating time and the actual heating time are considered, but also the segmented target heating time of the current heating section of the slab and the time that the slab has been heated in the current heating section are considered. This not only improves production efficiency, but also ensures that the heating temperature of the slab meets the requirements.

[0057] In this embodiment, it is necessary to calculate the target tapping rhythm for each slab, except for the furnace head steel.

[0058] Optionally, step S120 includes steps S1201 to S1204.

[0059] Step S1201: Obtain the width of the slab and the steel loading gap.

[0060] In this embodiment, the information of each slab is pre-recorded, which may include the slab width, steel loading gap, etc. The steel loading gap refers to the gap between two adjacent slabs.

[0061] Step S1202: Based on the width and steel loading gap, determine the number of third slabs that need to be transported out of the heating section and the outlet of the heating furnace.

[0062] In this embodiment, the heated slabs are transported out of the furnace outlet one by one. Each time a slab is transported out, the other slabs inside the furnace move forward a certain distance, the sum of the width of the previously transported slab and the steel loading gap. Therefore, to determine which slab should be transported out of the current heating section, the furnace outlet needs to transport out the number of slabs equal to the number of slabs in the previous section.

[0063] Specifically, we can first calculate the sum of the width w of the slab and the steel loading gap ε of all slabs between the slab and the heating section, to obtain the first width sum. Assuming the slab's serial number is k, then the first width sum is: Then, when m slabs are discharged from the heating furnace outlet, the sum of the width of these m slabs and the steel loading gap is calculated to obtain the second width sum, denoted as: At this point, the sum of the first width is greater than or equal to the sum of the second width. If another slab is transported out of the heating furnace outlet, that is, when a total of m+1 slabs are transported out, the sum of the first width will be less than the sum of the second width. Therefore, m is taken as the number of the third slab. In other words, in order to transport the slab with the sequence number k out of the current heating section, m slabs need to be transported out of the heating furnace outlet.

[0064] Step S1203: Calculate the first downtime of the heating furnace from the current moment until the third number of slabs are shipped out, and the second downtime during the period when the second number of slabs are shipped out.

[0065] In this embodiment, the rolling production line sometimes needs to be shut down due to maintenance or other reasons, and there may be multiple shutdowns during the slab heating period. Therefore, when determining the steel output rhythm, the cumulative downtime during the heating period of each slab should be considered to more rationally control the slab heating time and improve production efficiency. Downtime can be obtained from the production plan. For example, the planned downtime between slab number k-1 and slab number k is δ. k If the machine does not stop between two adjacent slabs, the downtime is recorded as 0. The cumulative downtime can be calculated based on the downtime between each slab.

[0066] In this embodiment, the cumulative downtime includes two types: one is the sum of the planned downtimes corresponding to a slab before it leaves its heating section, i.e., the first downtime; the other is the sum of the planned downtimes corresponding to a slab before it leaves the heating furnace, i.e., the second downtime. Specifically, when the heating furnace transports out a third number of slabs, this slab can just leave its heating section; when the heating furnace transports out a second number of slabs, this slab can just leave the heating furnace.

[0067] Step S1204: Determine the target steel tapping rhythm based on the first shutdown time, the second shutdown time, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of first slabs, and the number of second slabs.

[0068] Therefore, when determining the target steel tapping rhythm of the heating furnace, not only the total target heating time, the total actual heating time, the segmented target heating time, and the segmented actual heating time are considered, but also the downtime is taken into account.

[0069] Optionally, step S1204 includes:

[0070] The first step is to determine the tapping rhythm of the heating furnace based on the second downtime, the total target heating time, the total actual heating time, and the number of second slabs.

[0071] In this embodiment, it is necessary not only to improve production efficiency, but also to ensure that the slab tapping temperature meets the requirements. Therefore, two tapping rhythms are calculated, one for the heating furnace and the other for the heating section.

[0072] Optional, the first step includes:

[0073] The tapping rhythm of the heating furnace is determined according to the following formula:

[0074]

[0075] Among them, P 炉The tapping rhythm of the heating furnace is represented by t1, the total target heating time, t2, the total actual heating time, t3, the second downtime, and n1, which represents the second slab quantity.

[0076] This can be understood as the total target heating time t1 minus the total actual heating time t2, resulting in the remaining heating time for the slab. Since the furnace continues heating during shutdown, this time cannot be ignored. Therefore, subtracting the second shutdown time from the remaining heating time gives the additional heating time the slab needs in the furnace. Finally, dividing this additional heating time by the number of slabs preceding it yields the average tapping rhythm of the slabs preceding it, i.e., the furnace's tapping rhythm.

[0077] In this embodiment, in order to ensure the accuracy of the calculation, a time correction value can be preset. The time correction value is then subtracted from the required heating time and divided by the number of second slabs.

[0078] The second step is to determine the steel tapping rhythm of the heating section based on the first downtime, the target heating time of each section, the actual heating time of each section, and the number of the first slab.

[0079] Optional, the second step includes:

[0080] The tapping rhythm of the heating zone is determined using the following formula:

[0081]

[0082] Among them, P 段 t4 represents the current steel output rhythm of the heating section, t5 represents the target heating time of the section, t6 represents the first shutdown time, and n2 represents the number of the first slabs.

[0083] This can be understood as subtracting the actual heating time t5 from the target heating time t4 for each segment, resulting in the remaining heating time for the slab in its current heating segment. Since the furnace continues heating during shutdown, this time cannot be ignored. Therefore, subtracting the first shutdown time from the remaining heating time in the heating segment gives the remaining heating time the slab needs in that segment. Finally, dividing this remaining heating time by the number of slabs preceding it in the current heating segment gives the average tapping rhythm of the slabs preceding it in the current heating segment, i.e., the tapping rhythm of the current heating segment.

[0084] The third step is to take the larger of the tapping rhythm of the heating furnace and the tapping rhythm of the heating section as the initial tapping rhythm.

[0085] Finally, compare the tapping rhythm P of the heating furnace. 炉 And the tapping rhythm P of the heating section 段The size of the slab is selected, and the larger one is chosen as the initial tapping rhythm to ensure that the slab can reach the required heating time in the heating furnace and the heating section it is in.

[0086] Step 4: Determine the target steel tapping rhythm based on the initial tapping rhythm.

[0087] In this embodiment, the initial tapping rhythm of a slab can be determined according to the method described above. The same method can be used to determine the initial tapping rhythm of all slabs in the heating furnace. A rolling line may have multiple heating furnaces, some active and some off. Therefore, the initial tapping rhythm of each slab in each active furnace is calculated, and the largest initial tapping rhythm among all initial tapping rhythms can be selected as the target tapping rhythm. However, considering the actual situation on site, the following method for determining the target tapping rhythm is also included.

[0088] Optional, the fourth step includes:

[0089] Obtain the preset steel tapping rhythm of the rolling line control system; take the maximum of the initial steel tapping rhythm of all slabs in all heating furnaces on the rolling line and the maximum steel tapping rhythm of the rolling line as the target steel tapping rhythm.

[0090] In this embodiment, the rolling mill has its own control system, and the heating furnace also has its own control system. Both control systems will determine a steel tapping rhythm, but ultimately the larger of the two tapping rhythms will be selected as the target tapping rhythm for final control.

[0091] Step S130: Control the steel tapping of the heating furnace according to the target steel tapping rhythm.

[0092] In this embodiment, when controlling the tapping of steel from the heating furnace, the tapping machine's operating time t must also be considered. p The correction amount for the roller conveyor running time is t. r Subtract t from the target steel production rhythm p p Then subtract t r The timing is obtained, and the timing starts after the previous slab is transported out of the heating furnace. If the timing time is reached, the next slab is controlled to be discharged.

[0093] In this embodiment, before controlling the tapping of steel from the heating furnace, the first temperature of the first slab at the furnace outlet and the end temperature of the first slab at the end of the heating section are obtained. If the first temperature reaches the preset tapping temperature and the end temperature reaches the preset segmentation temperature, the slab is tapped. Otherwise, the slab is not tapped, and the temperature of the slab is monitored in real time until the first temperature reaches the preset tapping temperature and the end temperature reaches the preset segmentation temperature, at which point the slab is tapped.

[0094] The hot-rolling furnace tapping control method in this embodiment ensures that, while maintaining a relatively fast rolling pace, high-strength steel and other high-end steel products can meet both the overall target heating time and the target heating time for specific heating sections, guaranteeing sufficient alloy solution treatment. For extreme or difficult-to-roll steel specifications, it ensures excellent heating uniformity in both the thickness and width directions of the slab, guaranteeing rolling stability and superior product quality.

[0095] Based on the same inventive concept, this application also provides a steel tapping control device for a hot rolling heating furnace. Figure 2 This is a structural block diagram of a hot-rolling heating furnace tapping control device provided in an embodiment of this application, as shown below. Figure 2 As shown, the device 200 includes an acquisition module 201, a determination module 202, and a control module 203.

[0096] The acquisition module 201 is used to acquire the total target heating time and total actual heating time of the slab in the heating furnace, as well as the segmented actual heating time of the slab in the heating section, the segmented target heating time of the heating section, the number of first slabs between the slab and the outlet of the heating section, and the number of second slabs between the slab and the outlet of the heating furnace.

[0097] The determination module 202 is used to determine the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of first slabs, and the number of second slabs;

[0098] The control module 203 is used to control the steel tapping of the heating furnace according to the target steel tapping rhythm.

[0099] Optionally, the determining module 202 includes:

[0100] The acquisition unit is used to acquire the width of the slab and the steel loading gap;

[0101] The first determining unit is used to determine the number of third slabs that need to be transported out of the heating section and the furnace outlet, based on the width and steel loading gap.

[0102] The calculation unit is used to calculate the first downtime of the heating furnace from the current time to the time when the third number of slabs are shipped out, and the second downtime of the time when the second number of slabs are shipped out.

[0103] The second determining unit is used to determine the target steel output rhythm based on the first shutdown time, the second shutdown time, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of first slabs, and the number of second slabs.

[0104] Optionally, the second determining unit further includes:

[0105] The first determining subunit is used to determine the steel tapping rhythm of the heating furnace based on the second shutdown time, the total target heating time, the total actual heating time, and the second slab quantity.

[0106] The second determining subunit is used to determine the steel tapping rhythm of the heating section based on the first shutdown time, the target heating time of the section, the actual heating time of the section, and the number of the first slabs.

[0107] The third determining subunit is used to take the larger of the tapping rhythm of the heating furnace and the tapping rhythm of the heating section as the initial tapping rhythm.

[0108] The fourth determining sub-unit is used to determine the target steel tapping rhythm based on the initial steel tapping rhythm.

[0109] Optionally, the first determined subunit is also used for:

[0110] The tapping rhythm of the heating furnace is determined according to the following formula:

[0111]

[0112] Among them, P 炉 The tapping rhythm of the heating furnace is represented by t1, the total target heating time, t2, the total actual heating time, t3, the second downtime, and n1, which represents the second slab quantity.

[0113] Optionally, the second determining subunit is also used for:

[0114] The tapping rhythm of the current heating section is determined using the following formula:

[0115]

[0116] Among them, P 段 t4 represents the current steel output rhythm of the heating section, t5 represents the target heating time of the section, t6 represents the first shutdown time, and n2 represents the number of the first slabs.

[0117] Optionally, the fourth determining subunit is also used for:

[0118] Obtain the preset rolling mill output rhythm in the rolling mill control system;

[0119] The maximum of the initial tapping rhythm of all slabs in all heating furnaces on the rolling line and the maximum tapping rhythm of the rolling line is taken as the target tapping rhythm.

[0120] Optionally, if the total target heating time is greater than the preset time threshold, the heating section includes the first heating section, the second heating section, and the homogenization section.

[0121] If the total target heating time is less than or equal to the time threshold, then the heating section includes the homogenization section.

[0122] It is understood that the device provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0123] This application also provides an electronic device that may include a processor and a memory, wherein the processor and the memory may be connected to each other via a bus or other means.

[0124] The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0125] Memory may include mass storage for data or instructions. For example, and not limitingly, memory may include hard disk drives (HDDs), floppy disk drives, flash memory, optical disks, magneto-optical disks, magnetic tape, or Universal Serial Bus (USB) drives, or combinations of two or more of these. Where appropriate, memory may include removable or non-removable (or fixed) media. Where appropriate, memory may be internal or external to an electronic device. In a particular embodiment, memory may be non-volatile solid-state memory.

[0126] In one instance, the memory may be read-only memory (ROM). In one instance, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0127] The processor reads and executes computer program instructions stored in the memory to implement any of the hot rolling furnace tapping control methods in the above embodiments.

[0128] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus to communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0129] Furthermore, in conjunction with the hot-rolling furnace tapping control method in the above embodiments, this application embodiment can provide a computer-readable storage medium for implementation. This computer-readable storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the hot-rolling furnace tapping control methods in the above embodiments.

[0130] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0131] This application provides a method, apparatus, equipment, and medium for controlling steel tapping from a hot-rolled heating furnace. It acquires the total target heating time and total actual heating time of slabs in the heating furnace, as well as the segmented actual heating time of each slab in its heating section, the segmented target heating time of that section, the number of first slabs between the slab and the outlet of that heating section, and the number of second slabs between the slab and the furnace outlet. This allows for understanding the heating status and location of each slab. Based on the total target heating time, total actual heating time, segmented target heating time, segmented actual heating time, number of first slabs, and number of second slabs, a target tapping rhythm is determined. This fully considers the total heating time of the furnace and the heating time of some heating sections, making the target tapping rhythm more precise. Controlling the furnace tapping according to the target tapping rhythm ensures that the slab tapping temperature meets requirements and improves the furnace's production efficiency. The target tapping rhythm determined by this method ensures that the tapping temperature or end-of-section temperature of the slabs heated in the furnace meets requirements, improving production quality while maintaining production efficiency.

[0132] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0133] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of this application, various features of this application are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0134] It should be noted that the above embodiments are illustrative of this application and not limiting of it, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This application can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A method for controlling steel tapping from a hot-rolling heating furnace, characterized in that, The method includes: The total target heating time and total actual heating time of the slab in the heating furnace are obtained, as well as the segmented actual heating time of the slab in the heating section, the segmented target heating time of the heating section, the number of first slabs between the slab and the outlet of the heating section, and the number of second slabs between the slab and the outlet of the heating furnace. The target steel tapping rhythm is determined based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab. The steel tapping from the heating furnace is controlled according to the target steel tapping rhythm; The step of determining the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab includes: Obtain the width of the slab and the steel loading gap; Based on the width and the steel loading gap, determine the number of third slabs that need to be transported out of the heating furnace outlet from the location of the slab; Calculate the first downtime of the heating furnace from the current moment until the third number of slabs are shipped out, and the second downtime of the second number of slabs are shipped out; The target steel tapping rhythm is determined based on the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab.

2. The method for controlling steel tapping from a hot-rolling heating furnace according to claim 1, characterized in that, The step of determining the target steel tapping rhythm based on the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slabs, and the number of the second slabs includes: The tapping rhythm of the heating furnace is determined based on the second downtime, the total target heating time, the total actual heating time, and the number of the second slabs. The steel tapping rhythm of the heating section is determined based on the first downtime, the target heating time of the segment, the actual heating time of the segment, and the number of the first slabs. The larger of the tapping rhythm of the heating furnace and the tapping rhythm of the heating section shall be used as the initial tapping rhythm. The target steel tapping rhythm is determined based on the initial tapping rhythm.

3. The hot-rolling furnace tapping control method according to claim 2, characterized in that, The step of determining the tapping rhythm of the heating furnace based on the second downtime, the total target heating time, the total actual heating time, and the number of second slabs includes: The tapping rhythm of the heating furnace is determined according to the following formula: P 炉 ； Among them, P 炉 The tapping rhythm of the heating furnace is represented by t1, the total target heating time is represented by t2, the total actual heating time is represented by t3, the second downtime is represented by n1, and the second slab quantity is represented by n1.

4. The hot-rolling heating furnace tapping control method according to claim 2, characterized in that, The step of determining the tapping rhythm of the heating section based on the first downtime, the target heating time of the segment, the actual heating time of the segment, and the quantity of the first slab includes: The tapping rhythm of the heating zone is determined according to the following formula: P 段 ； Among them, P 段 t4 represents the steel tapping rhythm of the heating section, t5 represents the target heating time of the section, t6 represents the actual heating time of the section, and n2 represents the number of the first slabs.

5. The hot-rolling heating furnace tapping control method according to claim 2, characterized in that, Determining the target tapping rhythm based on the initial tapping rhythm includes: Obtain the preset rolling mill output rhythm in the rolling mill control system; The maximum of the initial tapping rhythm of all slabs in all heating furnaces on the rolling line and the rolling line tapping rhythm is taken as the target tapping rhythm.

6. The method for controlling steel tapping from a hot-rolling heating furnace according to claim 1, characterized in that, If the total target heating time is greater than a preset time threshold, then the heating section includes a first heating section, a second heating section, and a homogenization section. If the total target heating time is less than or equal to the time threshold, then the heating section includes the homogenization section.

7. A steel tapping control device for a hot-rolling heating furnace, characterized in that, The device includes: The acquisition module is used to acquire the total target heating time and total actual heating time of the slab in the heating furnace, as well as the segmented actual heating time of the slab in the heating section, the segmented target heating time of the heating section, the number of first slabs between the slab and the outlet of the heating section, and the number of second slabs between the slab and the outlet of the heating furnace. The determination module is used to determine the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab and the number of the second slab; The control module is used to control the steel tapping of the heating furnace according to the target steel tapping rhythm; The step of determining the target steel tapping rhythm based on the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab includes: Obtain the width of the slab and the steel loading gap; Based on the width and the steel loading gap, determine the number of third slabs that need to be transported out of the heating furnace outlet from the location of the slab; Calculate the first downtime of the heating furnace from the current moment until the third number of slabs are shipped out, and the second downtime of the second number of slabs are shipped out; The target steel tapping rhythm is determined based on the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the number of the first slab, and the number of the second slab.

8. An electronic device, characterized in that, include: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, the processor executing the computer instructions to perform the method of any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1-6.

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