A rolling production method based on cooperation of double casting machines and double heating furnaces
By using a rolling production method that combines a dual casting machine and a dual heating furnace, the problems of slab yield loss and insufficient production efficiency have been solved, achieving efficient batch smelting and batch rolling, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202610334615.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-18
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing hot rolling production mode, the yield of slabs with widened billets is severely reduced, and the efficiency of batch smelting and batch rolling is insufficient, which affects the overall production efficiency and product performance.
The rolling production method based on the collaboration of dual casting machines and dual heating furnaces is adopted. By dynamically scheduling the casting machine and heating furnace and continuously rolling, the edge trimming process in the steelmaking finishing stage is eliminated, and high-precision edge trimming is completed directly in the hot rolling process, realizing the collaborative scheduling and continuous rolling of the casting machine and heating furnace.
It significantly reduced the loss of slab yield, improved production efficiency and resource utilization, enhanced product surface quality and overall performance, and optimized process costs.
Smart Images
Figure CN122252479A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to hot rolling production technology, and more particularly to a rolling production method based on the collaboration of a dual casting machine and a dual heating furnace. Background Technology
[0002] In the steelmaking process, the high proportion of slab cutting during the widening and trimming of billets leads to significant yield losses. Furthermore, existing hot-rolling production methods have shortcomings in batch smelting and rolling, impacting overall production efficiency. There is an urgent need to develop a new production process that can effectively reduce slab yield losses in the steelmaking process, achieve efficient batch smelting and rolling, and simultaneously ensure overall product performance and production efficiency. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a rolling production method based on the cooperation of a dual casting machine and a dual heating furnace, which addresses the deficiencies in the prior art.
[0004] The technical solution adopted by this invention to solve its technical problem is: a rolling production method based on the cooperation of a dual casting machine and a dual heating furnace, comprising the following steps: 1) Steel casting and slab pretreatment: The refined molten steel is transported to the continuous casting machine for casting to form a continuous slab. After the slab is cut, it does not undergo the edge trimming treatment of the steelmaking finishing stage and directly enters the subsequent hot delivery process. The continuous casting machine adopts a dual casting machine configuration, namely casting machine 1 and casting machine 2, and the two continuous casting machines produce slabs with preset properties respectively; 2) Keep the cut slabs hot and directly hot-load them into the hot rolling process; 3) Coordinated scheduling of dual casting machines and dual heating furnaces; Based on the properties of the slabs produced by the No. 1 and No. 2 casting machines in steelmaking, and combined with the real-time operating status of the rolling line, the slabs are dynamically scheduled to be heated in the corresponding hot-charged heating furnace groups. The heating furnace group includes heating furnace #1, heating furnace #2 and heating furnace #3, and the dual-furnace combination mode is dynamically switched according to the real-time load of the rolling line; 4) Continuous rolling process; The slab heated to the preset rolling temperature in the heating furnace is fed into the rolling mill for continuous rolling, and multiple rolling passes are completed according to the preset process parameters; 5) After the hot rolling process is completed, high-precision edge trimming is performed in the fourth cooling unit or the hot rolling finishing area to complete the production of rolled products.
[0005] According to the above scheme, in step 2), the slab is rolled to a maximum width reduction of 80mm in the hot rolling process to meet the product width requirements.
[0006] According to the above scheme, step 3) specifically includes the following: 3.1) Division of labor steps for casting machines: By dividing the casting machine into different parts, the flow of slabs can be matched with the process rhythm and planning mode of different production units according to the slab production process, so as to achieve inter-production line collaboration. Among them, No. 1 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting hot-rolled HRD unit slabs. After cutting, the slabs are given priority to be hot-rolled and sent to the hot-rolling planned receiving pool. No. 2 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting tin-plated material unit slabs. After cutting, the slabs are given priority to be sent to the steelmaking insulation pit for temporary storage, and are sent hot-rolled after receiving instructions from the integrated rolling plan. 3.2) Heating furnace configuration steps: Choose one of two dual-furnace combinations: either a combination of heating furnace #1 and heating furnace #2, or a combination of heating furnace #2 and heating furnace #3. Simultaneously, dynamically switch between these two combinations based on the real-time load of the rolling line to ensure that the heating furnaces can stably receive the slabs from casting machines #1 and #2 and complete the heating, providing slabs at a qualified temperature for subsequent continuous rolling steps. The real-time load of the rolling line is determined by a combination of rolling rhythm and the number of slabs to be heated; 3.3) Scheduling logic steps: During the coordinated scheduling process Apply the distance priority principle and dynamically adjust the slab loading priority based on the order in which the slabs arrive at the roller conveyor junction from the casting machine and the transportation distance. A buffer and avoidance mechanism is adopted to temporarily store the slab in the steelmaking insulation pit to maintain the temperature when there is a path conflict, so as to ensure that the steelmaking step is coordinated and smooth with the heating and rolling steps.
[0007] According to the above scheme, in step 3.2), the two combinations are dynamically switched based on the real-time load of the rolling mill, as follows: When the rolling line is under heavy load, the No. 1 heating furnace and the No. 2 heating furnace are used in combination. The two furnaces operate at the same time, and the two heating furnaces simultaneously receive the hot slabs delivered by the No. 1 casting machine and the No. 2 casting machine for rapid heating and to avoid slab accumulation. When the rolling line load is low, it switches to a combination of heating furnace #2 and heating furnace #3. One of the heating furnaces is the main heating furnace, which receives the main slab heating task, and the other is a backup heating furnace, which fills the gap according to the arrival of the slab.
[0008] According to the above scheme, in step 3.3), the scheduling logic step adopts the following optimization strategy: (1) Time calibration strategy: The casting machine start time is determined by reverse calculation based on the start time of the rolling unit; (2) Continuous charging strategy: continuously charge slabs of the same type, specification and material into the same heating furnace to reduce furnace temperature fluctuations; (3) Reverse scheduling strategy: Driven by the demand of the hot rolling mill unit, the steelmaking collaborative operation plan is generated in reverse; combined with the requirements of No. 1 and No. 2 casting machines to produce according to the preset slab type, the timing of casting, cutting and hot delivery of HRD unit slab and tin-plated material unit slab, as well as the temporary storage time, are accurately matched to ensure that the steelmaking process and the demand of the hot rolling unit are synchronized.
[0009] According to the above scheme, in the continuous rolling step, a pre-configured continuous rolling unit is used, and the rolling mileage is controlled and the stand pressing load is optimized.
[0010] According to the above scheme, the continuous rolling unit is composed of hot rolling rolls and at least two types of slabs of the same width, arranged in a preset quantity, as follows: The continuous rolling unit consists of 75 slabs, comprising 2 hot rolls, 43 slabs of the same width unit 1 and 30 slabs of the same width unit 2, and ensures that the rolling mileage is ≤85km. Meanwhile, the F1-F4 stands account for 70% of the total reduction rate of the F1-F7 stands.
[0011] According to the above scheme, in step 5), after the hot rolling process is completed, the edge is trimmed in the fourth cooling unit or the hot rolling finishing station. The trimming accuracy is controlled within ±0.5mm. The slab is trimmed with high precision to ensure the product dimensional accuracy.
[0012] The beneficial effects of this invention are: 1. Reconstruction and Innovation of Width Control Process: Overturning the traditional process logic of slab edge trimming in the steelmaking finishing stage, the edge trimming process is moved to the hot rolling process after rolling is completed. High-precision edge trimming is carried out in the cooling unit or hot rolling finishing area, achieving a maximum width reduction of 80mm for hot-rolled slabs. At the same time, the slab yield loss is reduced from 0.3% in the traditional process to 0.15%, which greatly reduces the proportion of width-adjusting slabs cut off the line in the steelmaking process, reduces material waste from the source, and improves resource utilization.
[0013] By adopting a dual-casting machine billet supply and dual-furnace production mode, the steelmaking and hot rolling processes are efficiently coordinated. The batch smelting and hot rolling are cross-scheduled, which greatly improves production efficiency and optimizes process costs while ensuring product surface quality and overall performance. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a flowchart of a method according to an embodiment of the present invention; Figure 2 This is a schematic diagram of hot rolling cross-scheduling according to an embodiment of the present invention. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0016] Example 1: like Figure 1 As shown, a rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace includes the following steps: 1) Steel casting and slab pretreatment: The refined molten steel is transported to the continuous casting machine for casting to form a continuous slab. After the slab is cut, it does not undergo the edge trimming treatment of the steelmaking finishing stage and directly enters the subsequent hot delivery process. The continuous casting machine adopts a dual casting machine configuration, namely casting machine 1 and casting machine 2, and the two continuous casting machines produce slabs with preset properties respectively; 2) Keep the cut slabs hot and directly hot-load them into the hot rolling process; 3) Coordinated scheduling of dual casting machines and dual heating furnaces; Based on the properties of the slabs produced by the No. 1 and No. 2 casting machines in steelmaking, and combined with the real-time operating status of the rolling line, the slabs are dynamically scheduled to be heated in the corresponding hot-charged heating furnace groups. The heating furnace group includes heating furnace #1, heating furnace #2 and heating furnace #3, and the combination mode of the two furnaces is dynamically switched according to the real-time load of the rolling line. The coordinated scheduling of casting machine and heating furnace specifically includes: 3.1) Division of labor steps for casting machines: By dividing the casting machine into different parts, the flow of slabs can be matched with the process rhythm and planning mode of different production units according to the slab production process, so as to achieve inter-production line collaboration. Among them, No. 1 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting hot-rolled HRD unit slabs. After cutting, the slabs are given priority to be hot-rolled and sent to the hot-rolling planned receiving pool. No. 2 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting tin-plated material unit slabs. After cutting, the slabs are given priority to be sent to the steelmaking insulation pit for temporary storage, and are sent hot-rolled after receiving instructions from the integrated rolling plan. 3.2) Heating furnace configuration steps: Choose one of two dual-furnace combinations: either a combination of heating furnace #1 and heating furnace #2, or a combination of heating furnace #2 and heating furnace #3. Simultaneously, dynamically switch between these two combinations based on the real-time load of the rolling line to ensure that the heating furnaces can stably receive the slabs from casting machines #1 and #2 and complete the heating, providing slabs at a qualified temperature for subsequent continuous rolling steps. The real-time load of the rolling line is determined by a combination of rolling rhythm and the number of slabs to be heated; The load monitoring system collects rolling line data in real time. When the real-time load index of the rolling line exceeds the large load threshold for a continuous set time, the combination switching command is automatically triggered. During the switching process, after the original heating furnace combination completes the current slab heating cycle, the scheduling system links with the casting machine to adjust the billet feeding rhythm (such as temporarily suspending billet feeding or reducing billet feeding speed), and simultaneously activates the preheating program of the new combination to ensure that the furnace temperature is stable before accepting the slab.
[0017] The two combinations are dynamically switched based on the real-time load of the rolling line, as follows: When the rolling line is under heavy load, the No. 1 heating furnace and the No. 2 heating furnace are used in combination. The two furnaces operate at the same time, and the two heating furnaces simultaneously receive the hot slabs delivered by the No. 1 casting machine and the No. 2 casting machine for rapid heating and to avoid slab accumulation. When the rolling line load is low, it switches to a combination of heating furnace #2 and heating furnace #3. One of the heating furnaces is the main heating furnace, which receives the main slab heating task, and the other is a backup heating furnace, which fills the gap according to the arrival of the slab.
[0018] 3.3) Scheduling logic steps: During the coordinated scheduling process Apply the distance priority principle and dynamically adjust the slab loading priority based on the order in which the slabs arrive at the roller conveyor junction from the casting machine and the transportation distance. A buffer and avoidance mechanism is adopted to temporarily store the slab in the steelmaking insulation pit to maintain the temperature when there is a path conflict, so as to ensure that the steelmaking step is coordinated and smooth with the heating and rolling steps.
[0019] The following optimization strategies are adopted in the scheduling logic steps: (1) Time calibration strategy: The casting machine start time is determined by reverse calculation based on the start time of the rolling unit; Casting start time = Rolling start time - Conveying time (≤15 minutes) - Cutting time (40 seconds) - Refining time; (2) Continuous charging strategy: continuously charge slabs of the same type, specification and material into the same heating furnace to reduce furnace temperature fluctuations; (3) Reverse scheduling strategy: Driven by the demand of the hot rolling mill unit, the steelmaking collaborative operation plan is generated in reverse; combined with the requirements of No. 1 and No. 2 casting machines to produce according to the preset slab type, the timing of casting, cutting and hot delivery of HRD unit slab and tin-plated material unit slab, as well as the temporary storage time, are accurately matched to ensure that the steelmaking process and the demand of the hot rolling unit are synchronized.
[0020] 4) Continuous rolling process; The slab heated to the preset rolling temperature in the heating furnace is fed into the rolling mill for continuous rolling, and multiple rolling passes are completed according to the preset process parameters; In the continuous rolling process, a pre-configured continuous rolling unit is used, and the rolling mileage is controlled and the stand reduction load is optimized.
[0021] The continuous rolling unit consists of hot-rolled materials and at least two types of slabs of the same width, arranged in a predetermined quantity, as follows: The continuous rolling unit consists of 75 slabs, comprising 2 hot rolls, 43 slabs of the same width unit 1 and 30 slabs of the same width unit 2, and ensures that the rolling mileage is ≤85km. Meanwhile, the F1-F4 stands account for 70% of the total reduction rate of the F1-F7 stands.
[0022] The 70% reduction rate allocation should be allocated to the first four aircraft to undertake the main thinning task, while the last three aircraft should focus on fine-tuning. Product precision control: The high concentrated reduction rate in the early stage can quickly establish a thickness benchmark and reduce the risk of "thickness difference amplification" in the subsequent frame; the dispersed reduction rate in the later stage ensures the dimensional tolerance of the finished product; Rolling stability: A reasonable reduction rate distribution can balance the tension between stands and reduce problems such as strip deviation and strip breakage.
[0023] Its rolling unit structure is as follows: (1) Ironing roller material: The first piece has a thickness of 5.0mm and a width of 900mm, and the second piece has a thickness of 6.0mm and a width of 1100mm; (2) Unit 1 with the same width: 43 slabs with a width of 1200mm, the thickness decreases by 10%-15%, the width tolerance is ±10mm, and the width of the last slab in this unit is adjusted to 1150mm as a transition; (3) Unit 2 of the same width: 30 slabs with a width of 1050mm. Before the end of Unit 1 of the same width, the width of the last slab is adjusted to 1100mm as a transition material and included in this unit.
[0024] 5) After the hot rolling process is completed, high-precision edge trimming is performed in the fourth cooling unit or the hot rolling finishing area to complete the production of rolled products.
[0025] In step 5), after the hot rolling process is completed, the edge is trimmed in the fourth cooling unit or the hot rolling finishing station. The trimming accuracy is controlled within ±0.5mm. The slab is trimmed with high precision to ensure the product dimensional accuracy.
[0026] Example 2: like Figure 1 As shown, a rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace includes the following steps: Step 1, Steelmaking Process: Step 101: Add the raw materials to the steelmaking furnace for smelting. Mix iron ore with a particle size of 50-100mm, coke with a lump size of 100-150mm, and gas generator with a lump size of 50-100mm in proportion and add them to the blast furnace. Control the temperature at 1550-1650℃ and hold for 15-30 minutes for preliminary smelting. Step 102: Perform LF refining and RH refining. Transfer the pre-smelted molten steel to the LF refining furnace, control the temperature at 1550–1650℃, the vacuum degree at less than 1×10⁻³ Pa, and the stirring time at 30–60 minutes. Then transfer the molten steel to the RH refining furnace, with a vacuum degree at less than 1×10⁻⁴ Pa, and hold for 15–30 minutes. Step 103: Perform slab continuous casting. Pour the refined molten steel into a medium-frequency induction heating mold with a frequency of 10-20kHz, a power of 30-50kW, a casting temperature of 1520-1620℃, and a casting time of 15-30 minutes to obtain a slab with a thickness of 200-300mm.
[0027] Step 104: Activate the dual-casting machine billet supply dual-furnace production mode, and configure casting machine #1 to supply HRD units and casting machine #2 to supply tin-plating units.
[0028] Step 105: HRD is given priority to be sent to the hot rolling mill for planned collection, while tin-plated material is given priority to be sent to the steelmaking insulation pit, waiting for the integrated steelmaking and rolling plan instruction before being sent to the hot rolling mill.
[0029] Step 106: Using the start time of tin-plating unit rolling as a reference, calculate the casting machine start time in reverse, and control the casting machine start interval to 15-20 minutes.
[0030] Step 107: Cancel the finishing and trimming process in the steelmaking process and perform surface cleaning before hot rolling.
[0031] Step 2, Hot rolling process: Step 201: Adopt the batch rolling mode corresponding to batch smelting, such as HRD being loaded into heating furnace #1 and tin plating material being loaded into heating furnace #2.
[0032] Step 202: Achieve compact cyclic steel rolling of 2 HRDs + 1 tin-plated material. The first hot-roll material has a thickness of 5.0mm and a width of 900mm, and the second hot-roll material has a thickness of 6.0mm and a width of 1100mm.
[0033] Step 203, Unit 1 of the same width (1200mm*43 pieces): The thickness decreases by 10%–15%, and the width is strictly consistent (±10mm tolerance). The width of the last strip is adjusted to 1150mm (included in the 43 pieces of Unit 1 of the same width).
[0034] Step 204, Same Width Unit 2 (1050mm*30 pieces): After the 1200mm unit is completed, insert one 1100mm transition piece (included in the 30 pieces of Same Width Unit 2).
[0035] Step 205: Dynamically adjust the production cycle according to the actual rolling situation. The reduction rate of the F1–F4 stand passes should be controlled at 15–25%, and the rolling speed should be controlled at 1.3–1.5 m / min.
[0036] Step 206: The rolling mileage is controlled between 70 and 85 km.
[0037] Step 3, Cooling process: Step 301: Adopt laminar flow cooling mode. The temperature of the cooling medium is 20-30℃, and the flow rate is 10-20 m³ / min.
[0038] Step 302: Control the cooling rate to 0.5~1.0℃ / s.
[0039] Step 303: Perform hot rolling finishing and edge trimming. Use an edge trimming machine with a serrated cutting edge, and the trimming width is 1-2 mm.
[0040] By controlling the above process parameters, compared with the traditional production method, the yield of the material is increased by 15% and the production efficiency is increased by more than 20%.
[0041] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace, characterized in that, Includes the following steps: 1) Steel casting and slab pretreatment: The refined molten steel is transported to the continuous casting machine for casting to form a continuous slab. After the slab is cut, it does not undergo the edge trimming treatment of the steelmaking finishing stage and directly enters the subsequent hot delivery process. The continuous casting machine adopts a dual casting machine configuration, namely casting machine 1 and casting machine 2, and the two continuous casting machines produce slabs with preset properties respectively; 2) Keep the cut slabs hot and directly hot-load them into the hot rolling process; 3) Coordinated scheduling of dual casting machines and dual heating furnaces; Based on the properties of the slabs produced by the No. 1 and No. 2 casting machines in steelmaking, and combined with the real-time operating status of the rolling line, the slabs are dynamically scheduled to be heated in the corresponding hot-charged heating furnace groups. The heating furnace group includes heating furnace #1, heating furnace #2 and heating furnace #3, and the dual-furnace combination mode is dynamically switched according to the real-time load of the rolling line; 4) Continuous rolling process; The slab heated to the preset rolling temperature in the heating furnace is fed into the rolling mill for continuous rolling, and multiple rolling passes are completed according to the preset process parameters; 5) After the hot rolling process is completed, high-precision edge trimming is performed in the fourth cooling unit or the hot rolling finishing area to complete the production of rolled products.
2. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 1, characterized in that, In step 2), the slab is rolled to a maximum width reduction of 80mm in the hot rolling process to meet the product width requirements.
3. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 1, characterized in that, In step 3), the coordinated scheduling of the casting machine and heating furnace specifically includes: 3.1) Division of labor steps for casting machines: By dividing the casting machine into different parts, the flow of slabs can be matched with the process rhythm and planning mode of different production units according to the slab production process, so as to achieve inter-production line collaboration. Among them, No. 1 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting hot-rolled HRD unit slabs. After cutting, the slabs are given priority to be hot-rolled and sent to the hot-rolling planned receiving pool. No. 2 casting machine receives molten steel from the steelmaking process and is dedicated to casting and cutting tin-plated material unit slabs. After cutting, the slabs are given priority to be sent to the steelmaking insulation pit for temporary storage, and are sent hot-rolled after receiving instructions from the integrated rolling plan. 3.2) Heating furnace configuration steps: Choose one of two dual-furnace combinations: either a combination of heating furnace #1 and heating furnace #2, or a combination of heating furnace #2 and heating furnace #3. Simultaneously, dynamically switch between these two combinations based on the real-time load of the rolling line to ensure that the heating furnaces can stably receive the slabs from casting machines #1 and #2 and complete the heating, providing slabs at a qualified temperature for subsequent continuous rolling steps. The real-time load of the rolling line is determined by a combination of rolling rhythm and the number of slabs to be heated; 3.3) Scheduling logic steps: During the coordinated scheduling process Apply the distance priority principle and dynamically adjust the slab loading priority based on the order in which the slabs arrive at the roller conveyor junction from the casting machine and the transportation distance. A buffer and avoidance mechanism is adopted to temporarily store the slab in the steelmaking insulation pit to maintain the temperature when there is a path conflict, so as to ensure that the steelmaking step is coordinated and smooth with the heating and rolling steps.
4. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 3, characterized in that, In step 3.2), the two combinations are dynamically switched according to the real-time load of the rolling mill, as follows: When the rolling line is under heavy load, the No. 1 heating furnace and the No. 2 heating furnace are used in combination. The two furnaces operate at the same time, and the two heating furnaces simultaneously receive the hot slabs delivered by the No. 1 casting machine and the No. 2 casting machine for rapid heating and to avoid slab accumulation. When the rolling line load is low, it switches to a combination of heating furnace #2 and heating furnace #3. One of the heating furnaces is the main heating furnace, which receives the main slab heating task, and the other is a backup heating furnace, which fills the gap according to the arrival of the slab.
5. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 3, characterized in that, In step 3.3), the following optimization strategy is adopted in the scheduling logic step: (1) Time calibration strategy: The casting machine start time is determined by reverse calculation based on the start time of the rolling unit; (2) Continuous charging strategy: continuously charge slabs of the same type, specification and material into the same heating furnace to reduce furnace temperature fluctuations; (3) Reverse scheduling strategy: Driven by the demand of the hot rolling mill unit, the steelmaking collaborative operation plan is generated in reverse; combined with the requirements of No. 1 and No. 2 casting machines to produce according to the preset slab type, the timing of casting, cutting and hot delivery of HRD unit slab and tin-plated material unit slab, as well as the temporary storage time, are accurately matched to ensure that the steelmaking process and the demand of the hot rolling unit are synchronized.
6. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 1, characterized in that, In the continuous rolling step, a pre-configured continuous rolling unit is used, and the rolling mileage is controlled and the stand pressing load is optimized.
7. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 6, characterized in that, The continuous rolling unit is composed of hot rolling rolls and at least two types of slabs of the same width, arranged in a preset quantity, as follows: The continuous rolling unit consists of 75 slabs, comprising 2 hot rolls, 43 slabs of the same width unit 1 and 30 slabs of the same width unit 2, and ensures that the rolling mileage is ≤85km. Meanwhile, the F1-F4 stands account for 70% of the total reduction rate of the F1-F7 stands.
8. The rolling production method based on the coordinated operation of a dual casting machine and a dual heating furnace according to claim 1, characterized in that, In step 5), after the hot rolling process is completed, the slab is trimmed at the fourth cooling unit or the hot rolling finishing station. The trimming accuracy is controlled within ±0.5mm, and the slab is trimmed with high precision.
9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 8.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method described in any one of claims 1 to 8.