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

Abstract

The invention discloses a hot rolling heating furnace tapping control method, device and equipment and a medium, and belongs to the technical field of metallurgy. The method comprises the following steps: acquiring total target heating time and total actual heating time of a plate blank in a heating furnace, the actual segmented heating time of the plate blank in the heating section, the target segmented heating time of the heating section, the first plate blank number between the plate blank and an outlet of the heating section and the second plate blank number between the plate blank and an outlet of a heating furnace are determined; 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 number of the first slabs and the number of the second slabs; and controlling the heating furnace to tap steel according to the target tapping rhythm. According to the target tapping rhythm determined through the method, the tapping temperature or the section end temperature of the plate blank heated by the heating furnace meets the requirement, the production quality is improved, and meanwhile the production efficiency can be guaranteed.

Description

Technical Field

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

[0002] The capacity of hot rolling production line is the most important factor affecting the profit of hot rolling mill and the lifeline of hot rolling mill. Therefore, all hot rolling production lines are pursuing the ultimate efficiency and ultimate productivity. In this context, some rolling rhythm automatic control systems were born, which can improve the rolling rhythm.

[0003] At present, some rolling rhythm automatic control systems will first calculate the difference between the target heating time and the actual heating time of the slab, and then calculate the ratio of the difference to the number of slabs to obtain the steel-out rhythm of the slab, thereby controlling the steel-out of the slab according to the steel-out rhythm, thereby improving the production efficiency of the heating furnace. Among them, the number of slabs is the number of slabs between the current slab and the outlet of the heating furnace.

[0004] However, the above-mentioned rolling rhythm automatic control system focuses too much on improving production efficiency, which often leads to unqualified slab furnace temperature or end-of-segment temperature for high-end steel varieties represented by high-strength steel, resulting in low production quality. Summary of the invention

[0005] In view of the above problems, the present application is proposed to provide a hot rolling heating furnace steel tapping control method, device, equipment and medium that solve the above problems. When determining the target steel tapping rhythm, not only the target heating time and actual heating time of the slab in the heating furnace are considered, but also the segmented actual heating time and segmented target heating time in the heating section are considered. That is, the heating time of the slab in some heating sections is fully considered, so that the steel tapping of the heating furnace is controlled according to the target steel tapping rhythm determined in this way, which can not only improve the production efficiency, but also make the slab's furnace discharge temperature and the temperature at the end of the heating section meet the requirements, thereby improving the production quality.

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

[0007] Obtaining the total target heating time and the 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;

[0008] Determine a target steel 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;

[0009] The heating furnace is controlled to discharge steel according to the target steel-discharging rhythm.

[0010] Optionally, determining a target steel-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 includes:

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

[0012] Determine the number of third slabs to be transported out of the heating furnace outlet in order to transport the slab out of the heating section according to the width and the steel loading gap;

[0013] calculating a first downtime of the heating furnace from the current moment to the time when the third number of slabs is transported out, and a second downtime of the heating furnace during the time when the second number of slabs is transported out;

[0014] The target steel-out 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 first slab quantity and the second slab quantity.

[0015] Optionally, determining the target steel-tapping rhythm according to 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 first slab quantity, and the second slab quantity includes:

[0016] determining a steel-tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity;

[0017] Determine the steel-out rhythm of the heating section according to the first downtime, the segment target heating time, the segment actual heating time and the first slab quantity;

[0018] The larger one of the steel-out rhythm of the heating furnace and the steel-out rhythm of the heating section is used as the initial steel-out rhythm;

[0019] The target steel-tapping rhythm is determined according to the initial steel-tapping rhythm.

[0020] Optionally, determining the steel-tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity includes:

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

[0022]

[0023] Among them, P 炉 represents the steel-out rhythm of the heating furnace, t1 represents the total target heating time, t2 represents the total actual heating time, t3 represents the second downtime, and n1 represents the second slab quantity.

[0024] Optionally, determining the steel-out rhythm of the current heating section according to the first downtime, the segment target heating time, the segment actual heating time and the first slab quantity includes:

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

[0026]

[0027] Among them, P 段 represents the steel-out rhythm of the current heating section, t4 represents the target heating time of the segment, t5 represents the actual heating time of the segment, t6 represents the first downtime, and n2 represents the first slab quantity.

[0028] Optionally, determining the target steel-tapping rhythm according to the initial steel-tapping rhythm includes:

[0029] Obtain the steel-out rhythm of the rolling line preset in the rolling line control system;

[0030] The maximum of the initial steel-out rhythm of all slabs in all heating furnaces on the rolling line and the steel-out rhythm of the rolling line is used as the target steel-out 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 soaking section;

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

[0033] In a second aspect, the present application provides a hot rolling heating furnace steel tapping control device, the device comprising:

[0034] An acquisition module is used to acquire the total target heating time and the 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] A determination module, configured to determine a target steel 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;

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

[0037] In a third aspect, the present application provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0038] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0039] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0040] The present application provides a hot rolling heating furnace tapping control method, device, equipment and medium, which obtains 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, so as to understand the heating situation and location of each slab; according to 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, the target tapping rhythm is determined, and the total heating time of the heating furnace and the heating time of some heating sections are fully considered, so that the target tapping rhythm is more accurate; the tapping of the heating furnace is controlled according to the target tapping rhythm, so that the tapping temperature of the slab can meet the requirements, and the production efficiency of the heating furnace can be improved. The target tapping rhythm determined by the method makes the tapping temperature or the end temperature of the slab heated by the heating furnace meet the requirements, improves the production quality, and ensures the production efficiency at the same time.

[0041] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0043] Figure 1 It is a flow chart of a hot rolling heating furnace steel tapping control method provided in an embodiment of the present application;

[0044] Figure 2 It is a structural block diagram of a hot rolling heating furnace steel tapping control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] Figure 1 : is a flow chart of a hot rolling heating furnace steel tapping control method provided in an embodiment of the present application, such as Figure 1 As shown, the method includes steps S110 to S130.

[0047] Step S110, obtain the total target heating time and the 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.

[0048] In this embodiment, the heating furnace includes a plurality of heating sections, and the arrangement order of the plurality of heating sections from the entrance to the exit of the heating furnace is 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 order of loading into the furnace, and the first slab loaded is numbered 0, the second slab loaded is numbered 1, and so on.

[0049] The total target heating time is the target time that the slab needs to be heated in the heating furnace, and the segmented target heating time is the target time that the slab needs to be heated in the heating section. Different heating sections may have different segmented target heating times. The total actual heating time is the total time that the slab has been heated, which is calculated by subtracting the time t when the slab enters the heating furnace from the current time t f The total actual heating time is obtained by calculating the time difference between the heating time and the heating time. The current position of the slab is collected in real time, and the heating section is determined according to the current position, and the current heating section is recorded as the heating section. For example, if the slab is currently in section 1, then the heating section is section 1. The actual heating time of each section is the time that the slab has been heated in the heating section. The actual heating time of each section is calculated by subtracting the time t when the slab enters the heating section from the current time t.s The total target heating time and the target heating time of each heating section are preset and can be directly called when needed.

[0050] For example, if the serial number of a slab is 20, the heating section where the slab No. 20 is currently located is the first heating section, and there are five slabs in the first heating section, with serial numbers 17, 18, 19, 20 and 21, and there are three slabs No. 17, 18 and 19 between the slab No. 20 and the first heating section outlet, then the first slab quantity of the slab No. 20 is 3. The first slab quantity and the second slab quantity of slabs with other serial numbers can be calculated by the same method.

[0051] 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 soaking section; if the total target heating time is less than or equal to the time threshold, the heating section includes a soaking section.

[0052] In this embodiment, if the total target heating time is greater than the time threshold, it means that the total target heating time is long. In order to ensure the uniformity of heating of the slab in each heating section, the heating section includes the first heating section, the second heating section and the soaking section. If the total target heating time is less than or equal to the time threshold, it means that the total target heating time is short. Then, the heating time of the slab in the soaking section is guaranteed as much as possible, so the heating section only includes the soaking section.

[0053] That is to say, there will be many slabs in the heating furnace, and each slab will be in a different heating section at the current moment. When the heating section includes the first heating section, the second heating section and the equalizing section, it is necessary to obtain the segmented target heating time and the segmented actual heating time of each slab in the first heating section, the second heating section and the equalizing section. When the slab is in the preheating section, the corresponding segmented target heating time and the segmented actual heating time are not obtained; when the heating section only includes the equalizing section, it is only necessary to obtain the segmented target heating time and the segmented actual heating time of each slab in the equalizing section. When the slab is in the first heating section, the second heating section and the preheating section, the corresponding segmented target heating time and the segmented actual heating time are not obtained.

[0054] In this embodiment, when the heating furnace is in a full furnace state, step S110 is executed. Specifically, a laser detector can be installed at the outlet of the heating furnace. When the laser detector is turned on, it means that there are slabs at the outlet of the heating furnace, and the heating furnace enters a full furnace state. At this time, the rolling rhythm is calculated. Each time the laser detector is turned on, the rolling rhythm calculation is triggered once, that is, steps S110 to S130 in this embodiment are cycled once.

[0055] Step S120, determining a target steel-out rhythm according to 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-out rhythm, not only the total target heating time and the actual heating time are considered, but also the segmented target heating time of the heating section where the slab is currently located and the time the slab has been heated in the current heating section. 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 steel-tapping rhythm of each slab, except for the furnace head steel.

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

[0059] Step S1201, obtaining the width of the slab and the steel loading gap.

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

[0061] Step S1202: Determine the number of third slabs to be transported out of the heating furnace outlet in order to transport the slabs out of the heating section according to the width and the steel loading gap.

[0062] In this embodiment, the heated slabs are transported out piece by piece at the outlet of the heating furnace. Each time a piece is transported out, the other slabs in the heating furnace will move forward a certain distance, which is the sum of the width of the slab just transported out and the steel loading gap. Therefore, if you want to know which slab you want to transport out of the current heating section, then the corresponding outlet of the heating furnace must transport the third number of slabs.

[0063] Specifically, the sum of the width w of the slab and all the slabs between the slab and the heating section and the steel loading gap ε can be calculated to obtain the first width sum. Assuming that the sequence number of the slab is k, the first width sum is: Then calculate the sum of the width of the m slabs and the steel loading gap when m slabs are transported out of the heating furnace outlet, and get the second width sum, which is recorded as: At this time, the sum of the first width is greater than or equal to the sum of the second width. If one more slab is transported out of the heating furnace outlet, that is, 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, and m is used as the third number of slabs. In other words, if you want to transport the slab with sequence number k out of the current heating section, m slabs must be transported out of the heating furnace outlet.

[0064] Step S1203, calculating the first downtime of the heating furnace from the current moment to the time when the third number of slabs are transported out, and the second downtime of the heating furnace during the time when the second number of slabs are transported out.

[0065] In this embodiment, the rolling line sometimes needs to be shut down due to maintenance or other reasons, and the slab heating period may be shut down multiple times. Therefore, the cumulative downtime during each slab heating period should be considered when determining the steelmaking rhythm, which can more reasonably control the slab heating time and improve production efficiency. The downtime can be obtained from the production plan. For example, the planned downtime between the slab with sequence number k-1 and the slab with sequence number k is δ k If there is no stoppage between two adjacent slabs, the stoppage time is recorded as 0. The cumulative stoppage time can be calculated based on the stoppage time between each slab.

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

[0067] Step S1204, determining the target steel-making rhythm according to 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 first slab quantity and the second slab quantity.

[0068] Therefore, when determining the target steel-making rhythm of the heating furnace, not only the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, but also the downtime are considered.

[0069] Optionally, step S1204 includes:

[0070] The first step is to determine the steel-out rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity.

[0071] In this embodiment, not only the production efficiency needs to be improved, but also the slab discharge temperature needs to meet the requirements, so two steel discharge rhythms are calculated, one for the heating furnace and the other for the heating section.

[0072] Optionally, the first step includes:

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

[0074]

[0075] Among them, P 炉It represents the steel-out rhythm of the heating furnace, t1 represents the total target heating time, t2 represents the total actual heating time, t3 represents the second downtime, and n1 represents the second slab quantity.

[0076] It can be understood that the total target heating time t1 minus the total actual heating time t2 is the remaining heating time of the slab. Because the heating furnace is still heating during shutdown, this part of time cannot be ignored, so the remaining heating time minus the second shutdown time is the remaining heating time, and the heating time of the slab in the heating furnace is obtained. Finally, the remaining heating time is divided by the number of slabs in front of the slab, and the average steel-out rhythm of the slab in front of the slab is obtained, that is, the steel-out rhythm of the heating furnace.

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

[0078] The second step is to determine the steel-out rhythm of the heating section according to the first downtime, the target heating time of each section, the actual heating time of each section and the number of the first slabs.

[0079] Optionally, the second step includes:

[0080] Determine the steel tapping rhythm in the heating section according to the following formula:

[0081]

[0082] Among them, P 段 It represents the steel-out rhythm of the current heating section, t4 represents the target heating time of the segment, t5 represents the actual heating time of the segment, t6 represents the first downtime, and n2 represents the first slab quantity.

[0083] It can be understood that the remaining heating time of the slab in the current heating section is obtained by subtracting the actual heating time t5 from the segmented target heating time t4. Because the heating furnace is still heating during shutdown, this part of time cannot be ignored, so the remaining heating time in the heating section is subtracted from the first shutdown time to obtain the heating time required for the slab in the heating section. Finally, the heating time required for the heating section is divided by the number of slabs in front of the slab in the heating section, and the average steel-out rhythm of the slab in front of the slab in the heating section is obtained, that is, the steel-out rhythm of the heating section.

[0084] The third step is to use the larger of the steel-out rhythm of the heating furnace and the steel-out rhythm of the heating section as the initial steel-out rhythm.

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

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

[0087] In this embodiment, the initial steel-out rhythm of a slab can be determined according to the method described above, and the initial steel-out rhythm of all slabs in the heating furnace can be determined by the same method. A rolling line may have multiple heating furnaces, some of which are in an activated state and some are in a closed state. Then the initial steel-out rhythm of each slab in each heating furnace in each activated state is calculated, and the largest initial steel-out rhythm among all initial steel-out rhythms can be selected as the target steel-out rhythm. However, considering the actual situation on site, the following method for determining the target steel-out rhythm is also included.

[0088] Optionally, the fourth step includes:

[0089] The preset steel-out rhythm of the rolling line in the rolling line control system is obtained; the maximum of the initial steel-out rhythm of all slabs in all heating furnaces on the rolling line and the steel-out rhythm of the rolling line is used as the target steel-out rhythm.

[0090] In this embodiment, the rolling line has its own control system, and the heating furnace also has its own control system. Both control systems will determine a steel-out rhythm, but ultimately the largest steel-out rhythm of the two is selected as the target steel-out rhythm for final control.

[0091] Step S130, controlling the heating furnace to discharge steel according to the target steel-discharging rhythm.

[0092] In this embodiment, when controlling the steel tapping of the heating furnace, the tapping machine action time t p , the roller running time correction is t r , subtract t from the target tapping rhythm p p Then subtract t r , get the timing time, and start timing when the front slab is transported out from the heating furnace outlet. If the timing time is reached, the next slab is controlled to be discharged.

[0093] In this embodiment, before controlling the steel discharge from the heating furnace, the first temperature of the first slab at the outlet of the heating furnace and the end temperature of the first slab at the end of the heating section are also acquired. If the first temperature reaches the preset discharge temperature and the end temperature reaches the preset segment temperature, the slab is controlled to be discharged. Otherwise, the slab is not controlled to be discharged, and the temperature of the slab is monitored in real time until the first temperature reaches the preset discharge temperature and the end temperature reaches the preset segment temperature, and then the slab is controlled to be discharged.

[0094] By adopting the hot rolling heating furnace tapping control method in this embodiment, under the premise of ensuring a fast rolling rhythm, high-end steel represented by high-strength steel can be heated in the heating furnace, not only the total target heating time of the heating furnace can meet the requirements, but also the segmented target heating time of some heating sections can meet the requirements, ensuring sufficient solid solution of the alloy. For extreme specifications or difficult-to-roll specifications, the heating uniformity in the thickness and width directions of the slab is very good, ensuring rolling stability and excellent product quality.

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

[0096] An acquisition module 201 is used to acquire the total target heating time and the 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] A determination module 202, for determining a target steel 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;

[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] An acquisition unit, used to acquire the width of the slab and the steel loading gap;

[0101] The first determination unit is used to determine the number of third slabs to be transported out of the heating furnace outlet to transport the slabs out of the heating section according to the width and the steel loading gap;

[0102] A calculation unit, used for calculating a first downtime of the heating furnace from the current moment to the time when the third number of slabs is transported out, and a second downtime of the heating furnace during the time when the second number of slabs is transported out;

[0103] The second determination unit is used to determine the target steel-out rhythm according to 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 first slab quantity and the second slab quantity.

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

[0105] A first determination subunit is used to determine the steel-out rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time, and the second slab quantity;

[0106] The second determination subunit is used to determine the steel-out rhythm of the heating section according to the first downtime, the segment target heating time, the segment actual heating time and the first slab quantity;

[0107] The third determination subunit is used to use the larger of the steel tapping rhythm of the heating furnace and the steel tapping rhythm of the heating section as the initial steel tapping rhythm;

[0108] The fourth determination subunit is used to determine the target steel-outing rhythm according to the initial steel-outing rhythm.

[0109] Optionally, the first determining subunit is further used for:

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

[0111]

[0112] Among them, P 炉 It represents the steel-out rhythm of the heating furnace, t1 represents the total target heating time, t2 represents the total actual heating time, t3 represents the second downtime, and n1 represents the second slab quantity.

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

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

[0115]

[0116] Among them, P 段 It represents the steel-out rhythm of the current heating section, t4 represents the target heating time of the segment, t5 represents the actual heating time of the segment, t6 represents the first downtime, and n2 represents the first slab quantity.

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

[0118] Obtain the steel-out rhythm of the rolling line preset in the rolling line control system;

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

[0120] 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 soaking section;

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

[0122] It can be understood that the device provided in the above embodiment 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] An embodiment of the present application also provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

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

[0125] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0126] In one example, the memory may be a read-only memory (ROM). In one example, 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 a flash memory, or a combination of two or more of these.

[0127] The processor implements any one of the hot rolling heating furnace steel tapping control methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0128] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0129] In addition, in combination with the hot rolling heating furnace steel tapping control method in the above embodiment, the embodiment of the present application can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the hot rolling heating furnace steel tapping control methods in the above embodiment is implemented.

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

[0131] The present application provides a hot rolling heating furnace tapping control method, device, equipment and medium, which obtains 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, so as to understand the heating situation and location of each slab; according to 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, the target tapping rhythm is determined, and the total heating time of the heating furnace and the heating time of some heating sections are fully considered, so that the target tapping rhythm is more accurate; the tapping of the heating furnace is controlled according to the target tapping rhythm, so that the tapping temperature of the slab can meet the requirements, and the production efficiency of the heating furnace can be improved. The target tapping rhythm determined by the method makes the tapping temperature or the end temperature of the slab heated by the heating furnace meet the requirements, improves the production quality, and ensures the production efficiency at the same time.

[0132] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0133] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be interpreted as reflecting the following intention: the claimed application requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, the inventive aspects lie in less than all the features of the single embodiment disclosed above. Therefore, the claims following the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0134] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of multiple such components. The present application may be implemented by means of hardware including several different components and by means of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A hot rolling heating furnace steel tapping control method, characterized in that: The method comprises: Obtaining the total target heating time and the 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; Determine a target steel 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; The heating furnace is controlled to discharge steel according to the target steel-discharging rhythm.

2. The hot rolling heating furnace steel tapping control method according to claim 1, characterized in that: Determining a target steel 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 includes: Obtaining the width of the slab and the steel loading gap; Determine the number of third slabs to be transported out of the heating furnace outlet in order to transport the slab out of the heating section according to the width and the steel loading gap; calculating a first downtime of the heating furnace from the current moment to the time when the third number of slabs is transported out, and a second downtime of the heating furnace during the time when the second number of slabs is transported out; The target steel-out 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 first slab quantity and the second slab quantity.

3. The hot rolling heating furnace tapping control method according to claim 2, characterized in that: The step of determining the target steel-tapping rhythm according to 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 first slab quantity, and the second slab quantity includes: determining a steel-tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity; Determine the steel-out rhythm of the heating section according to the first downtime, the segment target heating time, the segment actual heating time and the first slab quantity; The larger one of the steel-out rhythm of the heating furnace and the steel-out rhythm of the heating section is used as the initial steel-out rhythm; The target steel-tapping rhythm is determined according to the initial steel-tapping rhythm.

4. The hot rolling heating furnace tapping control method according to claim 3, characterized in that: Determining the steel tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity includes: The steel-out rhythm of the heating furnace is determined according to the following formula: Among them, P 炉 represents the steel-out rhythm of the heating furnace, t1 represents the total target heating time, t2 represents the total actual heating time, t3 represents the second downtime, and n1 represents the second slab quantity.

5. The hot rolling heating furnace tapping control method according to claim 3, characterized in that: Determining the steel-out rhythm of the current heating section according to the first downtime, the segment target heating time, the segment actual heating time and the first slab quantity includes: The steel tapping rhythm of the current heating section is determined according to the following formula: Among them, P 段 represents the steel-out rhythm of the current heating section, t4 represents the target heating time of the segment, t5 represents the actual heating time of the segment, t6 represents the first downtime, and n2 represents the first slab quantity.

6. The hot rolling heating furnace tapping control method according to claim 3, characterized in that: Determining the target steel-outing rhythm according to the initial steel-outing rhythm includes: Obtain the steel-out rhythm of the rolling line preset in the rolling line control system; The maximum of the initial steel-out rhythm of all slabs in all heating furnaces on the rolling line and the steel-out rhythm of the rolling line is used as the target steel-out rhythm.

7. The hot rolling heating furnace tapping control method according to claim 1, characterized in that: 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 soaking section; If the total target heating time is less than or equal to the time threshold, the heating section includes the soaking section.

8. A hot rolling heating furnace steel tapping control device, characterized in that: The device comprises: An acquisition module is used to acquire the total target heating time and the 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; A determination module, configured to determine a target steel 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; A control module is used to control the steel tapping of the heating furnace according to the target steel tapping rhythm.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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