Production scheduling method for thin-gauge strip steel and related equipment

Abstract

The invention discloses a production scheduling method of thin-specification strip steel and related equipment, and relates to the technical field of strip steel production.The method comprises the steps that order requirements are obtained, and the order requirements comprise the thickness interval and the production quantity of target products; and dynamically adjusting the rolling production scheduling process of the strip steel based on the order demand. According to the method, the production stability and the process precision of the thin-specification strip steel are further improved by distributing the heat for the products in different thickness intervals, dynamically adjusting the decarburization process and using the plate blank with the appropriate length according to the change of the thickness of the target product, and the diversified market requirements are met.

Description

Technical Field

[0001] This application relates to the technical field of strip production, and particularly to a scheduling method for thin-gauge strips and related equipment. Background Art

[0002] In the process of strip production, especially the production of thin-gauge strips (such as those with a thickness of 0.8 mm or less), it faces challenges such as complex production processes, high process requirements, and large equipment loads. Strip production usually needs to be quickly adjusted according to market demand or order demand, while traditional production scheduling often relies on fixed thickness intervals and production sequences, resulting in low production efficiency and even problems of excessive transition materials.

[0003] In the prior art, although there are some scheduling methods for strip production, there are still defects such as the inability to fully utilize production resources, the inability to flexibly respond to different order demands, and efficiency problems during thickness changes. Therefore, there is an urgent need for a scheduling method for thin-gauge strips to solve the above-mentioned technical problems. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] In a first aspect, this application provides a scheduling method for thin-gauge strips, including:

[0006] Obtain order requirements, where the order requirements include the thickness interval and production quantity of the target product;

[0007] Based on the order requirements, dynamically adjust the rolling scheduling process of the strip.

[0008] In some embodiments, based on the order requirements, dynamically adjusting the rolling scheduling process of the strip includes:

[0009] Allocate orders to different production heats based on target products in different thickness intervals;

[0010] Optimize the arrangement of the product thickness intervals for each production heat to reduce the generation of transition materials.

[0011] In some embodiments, it further includes:

[0012] Based on the production quantity, preferentially arrange the continuous production of products in the same thickness interval to reduce the number of thickness adjustments during the rolling process.

[0013] In some embodiments, it further includes:

[0014] Control the continuous rolling kilometer number of products with the first preset thickness to be less than or equal to the preset kilometer number.

[0015] In some embodiments, it further includes:

[0016] When the target product thickness is the second preset thickness, at least 8 pieces are set, where the piece is the thickness control corresponding to the strip tracking number;

[0017] When the target product thickness is the third preset thickness, at least 6 pieces are set;

[0018] When the target product thickness is the fourth preset thickness, at least 2 pieces are set;

[0019] When the target product thickness is the fifth preset thickness, at least 4 pieces are set;

[0020] When the target product thickness is the sixth preset thickness, at least 7 pieces are set.

[0021] In some embodiments, it further includes:

[0022] When the target product thickness is a thicker specification, produce the product with the thicker specification as the first heat and the last heat;

[0023] When the target product thickness is a thinner specification, arrange the product with the thinner specification to be produced in the intermediate heat;

[0024] Dynamically adjust the decarburization process according to the change of the target product thickness, where the decarburization process includes a single-stage decarburization process and a two-stage decarburization process.

[0025] In some embodiments, it further includes:

[0026] When the target product thickness is 1.3 mm and 1.4 mm, do not adopt the method of multiple rapid transition thickness control;

[0027] In the production of products with a target product thickness less than or equal to 1.2 mm, use a slab with a first preset length for rolling, where the first preset length is 10.5 m to 11 m;

[0028] In the production of products with a target product thickness greater than 1.2 mm, use a slab with a second preset length for rolling, where the second preset length is 11.5 m.

[0029] In a second aspect, the present application proposes a production scheduling device for thin-gauge strip steel, including:

[0030] An order acquisition unit for acquiring order requirements, where the order requirements include the thickness range and production quantity of the target product;

[0031] The rolling adjustment unit dynamically adjusts the rolling production scheduling process of the strip steel based on order requirements.

[0032] In a third aspect, an electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program stored in the memory, it implements the steps of the production scheduling method for thin-gauge strip steel according to any one of the first aspects above.

[0033] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the production scheduling method for thin-gauge strip steel according to any one of the first aspects.

[0034] In summary, by dynamically adjusting the rolling production scheduling process of the strip steel according to order requirements, the present application can effectively improve production efficiency, reduce the frequency of thickness adjustment during the production process, and optimize the generation of transition materials. By introducing the thickness range, production quantity, and quality requirements of the target product into production scheduling optimization, it can not only achieve flexible production of strip steel with different specifications, but also reduce production costs on the premise of ensuring product quality. In addition, the present invention further improves the production stability and process accuracy of thin-gauge strip steel by allocating furnace charges to products in different thickness ranges, dynamically adjusting the decarburization process, and using slab billets of appropriate lengths according to the change in the thickness of the target product, meeting the diverse market demands. Description of the Drawings

[0035] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this specification. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0036] Figure 1 It is a schematic flowchart of a production scheduling method for thin-gauge strip steel provided by an embodiment of the present application;

[0037] Figure 2 It is a schematic diagram of the actual situation of roll period production scheduling provided by an embodiment of the present application;

[0038] Figure 3 It is a schematic structural diagram of a production scheduling device for thin-gauge strip steel provided by an embodiment of the present application;

[0039] Figure 4 It is a schematic structural diagram of an electronic device for production scheduling of thin-gauge strip steel provided by an embodiment of the present application. Detailed Embodiments

[0040] In the description, claims, and above-mentioned drawings of this application, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments described here can be implemented in an order other than that illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments.

[0041] Please refer to Figure 1 , which is a schematic flowchart of a production scheduling method for thin-gauge strip steel provided by an embodiment of this application, and specifically may include:

[0042] S110. Obtain order requirements, where the order requirements include the thickness range and production quantity of the target product;

[0043] Exemplarily, in the production process of thin-gauge strip steel, obtaining order requirements is the first step of the production scheduling method. The order requirements include the thickness range and production quantity of the target product, and these two parameters are crucial for the production process. The thickness range determines the process adjustment range during the rolling process. Different thickness requirements correspond to different mill settings (such as reduction, rolling speed, heating temperature, etc.). Therefore, after receiving the order requirements, the primary task is to accurately understand and refine the production requirements for products in different thickness ranges. The production quantity affects the allocation of production resources. Products with a large production quantity may need to be given priority in production to ensure that the production tasks are completed on time.

[0044] By obtaining the order requirements, the production scheduling method can formulate a reasonable production plan based on the thickness range and production quantity of the target product. Different thickness ranges mean different rolling processes and equipment configuration requirements. For example, when producing extremely thin-gauge strip steel (≤0.8 mm), it is necessary to ensure that the mill can accurately control the thickness and surface quality, while for thicker strip steel (such as 1.4 mm), such precise control may not be required. At this time, the thickness range information provided in the order requirements provides guidance for the production scheduling system to help the system select an appropriate production process and resource allocation plan.

[0045] In addition, the order also includes the production quantity, that is, the specific quantity of the target product required by the customer for production. The production quantity directly affects the scheduling efficiency and resource utilization. When the order requirements are clear, the scheduling system needs to reasonably arrange the number of furnace runs according to the production quantity to ensure that the production task volume of each furnace run is appropriate, and avoid situations of resource idleness or overproduction. By dynamically adjusting the production quantity, the scheduling method can optimize the production process, reduce the idle time of equipment, improve production efficiency, and at the same time ensure the continuity and stability of production.

[0046] S120. Dynamically adjust the rolling scheduling process of the strip steel based on the order requirements.

[0047] Exemplarily, dynamically adjusting the rolling scheduling process of the strip steel based on the order requirements is to ensure that different thickness ranges, production quantities, and quality requirements can be flexibly responded to during the production process. The core of this process is to timely adjust the production plan and resource allocation according to the target product thickness range and production quantity provided in the order. With the continuous change of production requirements, dynamic adjustment can ensure that each batch of strip steel can be produced with the most appropriate process and time, thereby maximizing production efficiency and product quality.

[0048] During the dynamic adjustment process, the change in the thickness range requires the scheduling system to be able to judge in real time which products need special processes and configurations. For example, when producing extremely thin specifications, the rolling process needs to precisely control the roll gap and speed of the rolling mill to avoid the generation of transition materials or products with unqualified quality during thickness adjustment. While for the production of thicker strip steel, the requirements for thickness control are lower, and different rolling mill settings can be used. By dynamically adjusting the production sequence and process, the equipment load can be effectively reduced, and the production process can be optimized according to the thickness requirements.

[0049] In addition, dynamic adjustment also needs to consider the change in production quantity. Especially when the order quantity is large, how to efficiently arrange the rolling tasks to achieve mass production. The thickness ranges with large production quantities need to be given priority in production to ensure the maximization of equipment utilization rate and avoid excessive idle time and production capacity waste. For the specifications with small production quantities, by adjusting the production sequence, these specifications can be merged into adjacent furnace runs to reduce the number of process adjustments caused by specification switching, thereby achieving a smooth transition in production and improving efficiency. Dynamic adjustment not only optimizes the production process but also ensures the flexibility of production and the efficient use of resources.

[0050] In summary, by obtaining order requirements and dynamically adjusting the rolling production scheduling process, this application effectively reduces the generation of transitional materials. Based on the production quantity, it reasonably arranges the continuous production of products within the same thickness range, reduces the number of rolling thickness adjustments, and improves production efficiency. It conducts refined processing on products with different thicknesses in aspects such as furnace arrangement, decarburization process adjustment, slab length selection, and special thickness control, enhances production stability, realizes standardized production scheduling for thin gauge rolling periods, and thus achieves low-cost mass production. For example, in practical applications, it significantly increases the output of 0.8mm products in a single casting of MCCR (Multi-Mode Continuous Casting and Rolling), and significantly reduces the production cost per ton of steel by optimizing the decarburization process, further improving the production stability and process accuracy of thin gauge strip steel, and meeting diverse market demands.

[0051] In some examples, based on order requirements, the rolling production scheduling process of the strip steel is dynamically adjusted, including:

[0052] Based on target products in different thickness ranges, allocate orders to different production furnace batches;

[0053] Optimize the arrangement of the product thickness range for each production furnace batch to reduce the generation of transitional materials.

[0054] Exemplarily, in the process of dynamically adjusting the rolling production scheduling process of the strip steel based on order requirements, it is first necessary to allocate orders to different production furnace batches according to the thickness range of the target products. This is because different thickness ranges require different process parameters and equipment configurations. For example, when producing extremely thin gauge strip steel, the rolling mill needs to control the thickness with extremely high precision, and the reduction and rolling speed must be precisely adjusted. While for thicker gauge strip steel, the precision requirement is relatively lower, and the rolling mill settings are relatively loose. Therefore, for products in different thickness ranges, the production scheduling system reasonably allocates the products to the corresponding production furnace batches according to order requirements to meet the production process requirements of different specifications.

[0055] Secondly, in the process of arranging each production furnace batch, it is necessary to optimize the arrangement of the product thickness range. The goal of the optimized arrangement is to reduce the transitional materials generated when switching between different thickness specifications. Transitional materials refer to non-standard products caused by thickness adjustment and are usually regarded as waste or unqualified products. During the production process, if the product thickness switches too frequently, it will lead to unstable rolling and generate transitional materials. Therefore, by reasonably arranging the continuous production of products within the same thickness range, frequent thickness adjustments can be avoided, waste of transitional materials can be reduced, and rolling efficiency can be improved.

[0056] Finally, the optimized arrangement not only focuses on reducing transition materials, but also needs to ensure a smooth transition during the production process, that is, when switching between thickness ranges, ensure a stable switching process. When dynamically adjusting the production schedule, the production scheduling system will consider the similarity between thickness ranges and the requirements of equipment adjustment, so as to arrange products in adjacent thickness ranges in adjacent furnace batches, minimizing the transition during each thickness adjustment. This optimized arrangement strategy not only improves production efficiency, but also ensures the quality stability of products, reducing quality problems caused by thickness transitions.

[0057] In some instances, it also includes:

[0058] Based on the production quantity, prioritize the continuous production of products in the same thickness range to reduce the number of thickness adjustments during the rolling process.

[0059] Exemplarily, in the production of thin-gauge strip steel, prioritizing the continuous production of products in the same thickness range based on the production quantity has important theoretical significance. First of all, from the perspective of equipment operation stability, each rolling thickness adjustment requires corresponding changes in key parameters such as the rolling force, roll gap, and rolling speed of the equipment. Frequent thickness adjustments will keep the equipment in a continuous dynamic change, increasing the wear and fatigue of various components of the equipment. For example, the surface of the roll may show uneven wear due to frequent force changes, affecting the rolling accuracy and the surface quality of the strip steel. Therefore, prioritizing the continuous production of products in the same thickness range can reduce the frequent changes of equipment parameters, maintain a relatively stable operating state of the equipment, extend the service life of the equipment, and reduce the maintenance cost.

[0060] From the perspective of production efficiency, the thickness adjustment process takes a certain amount of time to complete the re-setting and debugging of equipment parameters. During this period, the production line is usually in a suspended or low-speed operation state, resulting in a decrease in overall production efficiency. If products in the same thickness range with a large production quantity can be continuously produced, these time losses can be avoided, maintaining a high production rhythm of the production line, ensuring more qualified products are produced per unit time, thus meeting the market order demand and enhancing the production efficiency of the enterprise.

[0061] From the perspective of product quality consistency, a stable rolling process helps to ensure quality indicators such as the thickness uniformity and mechanical properties of the strip steel. Frequent thickness adjustments may lead to problems such as thickness deviation and uneven tissue performance during the thickness switching stage of the strip steel. By prioritizing the continuous production of products in the same thickness range with a larger production quantity, the stable maintenance of rolling process parameters can be ensured, thereby improving the consistency and reliability of product quality. This not only enhances the competitiveness of the enterprise's products in the market, but also wins a good reputation and a larger market share for the enterprise. Therefore, optimizing the production schedule and reasonably arranging the continuous production of products in thickness ranges not only improves production efficiency, but also ensures the quality stability of the strip steel.

[0062] In some examples, it further includes:

[0063] Controlling the continuous rolling kilometer number of products with the first preset thickness to be less than or equal to the preset kilometer number.

[0064] Exemplarily, in the production of thin-gauge strip steel, an overly long continuous rolling kilometer number may lead to excessive wear of equipment. Especially when producing thin-gauge products, under long-term high-load operation of the rolling mill, components of the equipment such as rolling rolls and screw-down devices are prone to excessive wear and fatigue, which will affect the service life of the equipment and may lead to a decrease in production efficiency. By restricting the rolling kilometer number of products with the first preset thickness, it is possible to avoid equipment failures due to continuous excessive load, thereby reducing equipment maintenance costs and improving the stability and reliability of the production process.

[0065] From the perspective of production efficiency, an overly long continuous rolling kilometer number will not only increase the equipment load but also may affect the surface quality and thickness accuracy of the strip steel, especially when producing strip steel with an extremely thin gauge. If the equipment becomes fatigued during overly long continuous production in the rolling process, it may lead to uneven thickness fluctuations or surface defects on the strip steel surface, affecting the final quality of the product. Therefore, by setting an upper limit for the preset kilometer number and timely switching production tasks or making adjustments, the thickness accuracy and surface quality during the rolling process can be effectively controlled, ensuring the high efficiency and quality consistency of production.

[0066] From the perspective of the controllability of the production process, controlling the kilometer number of each rolling helps optimize the production schedule. Long-term continuous rolling may lead to an excessive amount of transitional materials or an increase in the difficulty of equipment adjustment. By restricting the rolling kilometer number, production tasks can be better allocated, avoiding unnecessary equipment adjustments and process instability. In addition, controlling the continuous rolling kilometer number can help production managers better predict and adjust the production progress, ensure the completion of production tasks as planned, avoid production process interruptions or resource waste, and thus improve the execution efficiency and flexibility of the production plan.

[0067] It should be noted that in the embodiments of the present application, the first preset thickness is 0.8 mm, and the preset kilometer number is 38 km to 44 km.

[0068] In some examples, it further includes:

[0069] When the target product thickness is the second preset thickness, at least 8 pieces are set, where the piece is the thickness control corresponding to the strip steel tracking number;

[0070] When the target product thickness is the third preset thickness, at least 6 pieces are set;

[0071] When the target product thickness is the fourth preset thickness, at least 2 pieces are set;

[0072] When the thickness of the target product is the fifth preset thickness, at least 4 pieces are set;

[0073] When the thickness of the target product is the sixth preset thickness, at least 7 pieces are set.

[0074] Exemplarily, as Figure 2 shown, Figure 2 It is a schematic diagram of the actual situation of the roll scheduling. Merge 1 and Merge 2 refer to two slab billets, which are merged and produced into a steel coil. In the order of 1-2, C is the single-billet mode, E is the endless mode, Y is for shearing, N is for non-shearing, IN is the shearing identification, the cross-furnace area is the mixed combustion part (with fluctuating composition), Endless is the endless mode. In the production process of thin-gauge strip steel, setting a specific number of pieces for different target product thicknesses is a key measure to ensure production quality and efficiency. For the second preset thickness, at least 8 pieces are required because the strip steel of this thickness may face relatively complex process control situations during rolling. A sufficient number of pieces can more finely track and adjust the thickness control to ensure the uniformity and stability of the thickness throughout the rolling process. Each piece corresponds to the thickness control of the strip steel tracking number, and the thickness is controlled once. More pieces mean that thickness deviations can be detected and corrected more timely and accurately, reducing product quality problems caused by uneven thickness and improving the finished product rate.

[0075] When the target product thickness is the third preset thickness, at least 6 pieces are set, and when the fourth preset thickness is at least 2 pieces, etc. These different settings are determined based on the production characteristics of strip steel with different thicknesses. Relatively thick strip steel has a lower sensitivity to thickness changes during rolling, but still requires a certain number of pieces to ensure the orderly monitoring and adjustment of the production process. For thinner strip steel such as in the case of the fourth preset thickness, although the number of pieces set is relatively small, this is determined based on a comprehensive consideration of its production difficulty and equipment control accuracy. The smaller number of pieces meets the basic thickness control requirements while avoiding unnecessary system complexity and production time costs caused by too many control units.

[0076] From the perspective of the overall production system coordination, these settings of the number of pieces for different thicknesses enable the production process to achieve a balance between precision and efficiency. A reasonable arrangement of the number of pieces not only ensures effective quality control of the production of strip steel with various thicknesses but also does not affect the production rhythm due to an overly complex control system. Through precise thickness tracking and adjustment, the generation of waste products is reduced, the utilization rate of raw materials is improved, and at the same time, the stability of product quality is ensured, enhancing the competitiveness of the enterprise in the thin-gauge strip steel market.

[0077] It should be noted that in the embodiments of the present application, the second preset thickness is from 0.83 mm to 1.05 mm, the third preset thickness is from 1.1 mm to 1.3 mm, the fourth preset thickness is 1.4 mm, the fifth preset thickness is from 1.5 mm to 1.6 mm, and the sixth preset thickness is from 1.8 mm to 3.0 mm.

[0078] In some examples, it further includes:

[0079] When the thickness of the target product is of a thicker specification, the products of the thicker specification are used as the first furnace batch and the last furnace batch for production;

[0080] When the thickness of the target product is of a thinner specification, the products of the thinner specification are arranged for production in the middle furnace batches;

[0081] According to the change of the thickness of the target product, the decarburization process is dynamically adjusted, where the decarburization process includes a single-stage decarburization process and a two-stage decarburization process.

[0082] Exemplarily, in the production process of thin-gauge strip steel, it is crucial to dynamically adjust the production schedule according to the change of the thickness of the target product. Thicker-gauge strip steel (such as 1.3 mm and above) usually requires less thickness adjustment. Therefore, arranging it as the first furnace batch and the last furnace batch for production is an ideal choice. By arranging the products of the thicker specification at the beginning and end of production, the frequent adjustments caused by thickness changes during the production process can be reduced. The arrangement of the first furnace batch and the last furnace batch helps to gradually increase or decrease the mill load during rolling, reducing the frequent changes of the equipment during rolling, thereby improving the stability and production efficiency of the equipment. Products of the thicker specification usually require fewer rolling process changes. Therefore, arranging them in these furnace batches can maximize the utilization efficiency of the production line.

[0083] On the contrary, when producing thinner-gauge strip steel (such as 1.2 mm and below), the mill needs to perform more precise thickness control, and frequent thickness adjustments put greater pressure on the equipment. Therefore, arranging the products of the thinner specification for production in the middle furnace batches helps to optimize the production process flow. The middle furnace batches are usually located in areas with more thickness changes, suitable for performing precise thickness control, and can effectively reduce the equipment load fluctuation. By arranging the products of the thinner specification in these furnace batches, the mill parameters can be better controlled to ensure that the products meet the predetermined quality standards during rolling, while improving the production efficiency and avoiding production delays caused by frequent adjustments.

[0084] Dynamically adjusting the decarburization process according to the thickness change of the target product is also a key step in production scheduling. The decarburization process has a direct impact on the quality of the product. Especially when producing strip steel with different thickness specifications, adjusting the decarburization process can optimize the mechanical properties and surface quality of the product. For example, for thicker strip steel, a single-stage decarburization process is usually adopted, which has a higher carbon content and relatively lower requirements for decarburization accuracy; while for thinner strip steel, a two-stage decarburization process is required to more precisely control the carbon content and ensure the consistency and high precision of product quality. By dynamically adjusting the decarburization process according to different thickness specifications, the smooth progress of the production process can be ensured, while meeting the quality requirements of strip steel with different specifications.

[0085] In some instances, it also includes:

[0086] When the thickness of the target product is 1.3 mm and 1.4 mm, the multiple rapid transition thickness control method is not adopted.

[0087] Exemplarily, during the production process of thin-gauge strip steel, target products with thicknesses of 1.3 mm and 1.4 mm belong to relatively thicker specifications. These products generally do not require as frequent thickness transitions and adjustments as extremely thin-gauge products. Therefore, in the production of relatively thicker specifications, the MFGC (Multi Flying Gauge Control) method is not applicable. The MFGC technology is mainly used in the production of thin-gauge strip steel. It can quickly adjust the thickness during the production process to ensure a smooth transition between different specifications. However, for relatively thicker products with thicknesses of 1.3 mm and 1.4 mm, the thickness control during the rolling process is relatively simple, and the need for thickness adjustment is less. Therefore, excessive technical intervention is not required, and using MFGC will instead increase production complexity and waste additional resources.

[0088] In addition, avoiding the use of MFGC in the production of relatively thicker specification products can also improve production efficiency. The MFGC technology consumes a certain amount of time and resources for equipment adjustment and control in practical applications. Especially when the equipment frequently switches thickness, the production line will temporarily stop or slow down, affecting the overall production efficiency. For strip steel with thicknesses of 1.3 mm and 1.4 mm, the thickness is relatively stable, and the need for adjusting mill parameters is small. Therefore, a simpler process flow can be adopted to maintain high production efficiency and stability, avoid unnecessary technical intervention, and thus improve the overall production efficiency and reduce equipment wear.

[0089] In some instances, it also includes:

[0090] During the production of products with a target product thickness less than or equal to 1.2 mm, a slab with a first preset length is used for rolling, where the first preset length is 10.5 m to 11 m;

[0091] In the production of products with a target product thickness greater than 1.2 mm, slabs with a second preset length are used for rolling, where the second preset length is 11.5 m.

[0092] Exemplarily, in the production process of thin-gauge strip steel, for different target product thicknesses, using slabs of different lengths for rolling can effectively improve production efficiency and ensure product quality. For products with a target product thickness less than or equal to 1.2 mm, using slabs with a first preset length for rolling is an optimized production strategy. Thinner-gauge strip steel requires more precise thickness control, and the use of short slabs can increase the flexibility in the production process. Short slabs can be rolled over a shorter distance, reducing the frequency of thickness adjustment during rolling, quickly adapting to possible thickness fluctuations during production, while also increasing the response speed of the rolling process and ensuring the quality stability and uniformity of the product.

[0093] In contrast, for products with a target product thickness greater than 1.2 mm, slabs with a second preset length are used for rolling. The production of thicker-gauge strip steel generally does not require frequent thickness adjustment, so using longer slabs can improve production efficiency. Long slabs provide more raw materials and a larger rolling range, helping to reduce the frequency of slab replacement and ensuring the stable operation of the production line. By selecting the appropriate length of slabs, not only is the production process optimized, but also production interruptions caused by frequent slab switching and equipment adjustment are reduced, thereby improving production efficiency and reducing resource waste.

[0094] In some instances, it also includes:

[0095] Table 1 Decarburization processes adopted for different furnace batches

[0096] Number of heats Steelmaking decarburization process Carbon content Product thickness range / mm 1 Single tap 0.04％ 1.4-4 2 Double tap 0.02％ 1.4-0.9 3 Double tap 0.02％ 0.9-0.75 4 Double tap 0.02％ 0.75-0.9 5 Double tap 0.02％ 0.9-1.2 6 Single tap 0.04％ 1.2-1.2 7 Single tap 0.04％ 1.2-1.9

[0097] As shown in Table 1, in this production design, to maximize production cost reduction, the single-stage decarburization process is used as much as possible, and the two-stage decarburization process is only adopted when producing extremely thin-gauge products. The single-stage decarburization process has a lower cost and can reduce production costs on the premise of meeting product quality requirements. For example, the product thickness ranges of furnace numbers 1, 6, and 7 are relatively wide, and the carbon content is 0.04%, and the single-stage decarburization process can meet the relatively loose decarburization requirements of these products. Although the two-stage decarburization process has a higher cost, for extremely thin-gauge products (such as furnace numbers 2, 3, 4, and 5), their product thickness ranges are narrower and the carbon content requirements are lower (0.02%). Adopting the two-stage decarburization process can better achieve deep decarburization, ensure product quality, and help reduce the mill load. Since extremely thin-gauge products have high requirements for precise control of carbon content during rolling, the two-stage decarburization process can provide more stable and accurate carbon content control, reducing the instability of rolling force caused by carbon content fluctuations, thereby ensuring the stable operation of the equipment.

[0098] The design of 7 heats of steel in the single-roll period is closely linked to the scheduling method of continuous production in the three-roll period with 21 heats per casting. According to the steelmaking decarburization process and product thickness range arrangement in Table 1, the production process follows a certain planning logic. First, arrange 1 heat with a larger thickness range (1.4 to 4 mm) to adopt the single-stage decarburization process. In this way, the initial state of the equipment can be utilized at the beginning of production to easily complete the production of thicker product specifications, while meeting the requirements for carbon content and reducing costs. Subsequently, gradually transition to heats with a narrower thickness range and stricter carbon content requirements (such as 2, 3, 4, 5), and adopt the two-stage decarburization process to ensure product quality and production stability. Finally, arrange 6 and 7 heats with a larger thickness range (1.2 to 1.9 mm) to adopt the single-stage decarburization process. This arrangement not only ensures the quality of products with different thickness specifications, but also optimizes cost control by reasonably selecting the decarburization process. At the same time, it matches the roll period scheduling to ensure the smoothness of continuous production and the efficient operation of the equipment, achieving a balance between production cost and product quality.

[0099] Please refer to Figure 3 , which is a schematic structural diagram of a production scheduling device for thin-gauge strip steel provided by an embodiment of the present application, including:

[0100] An order acquisition unit 21, configured to acquire order requirements, where the order requirements include the thickness range and production quantity of the target product;

[0101] A rolling adjustment unit 22, configured to dynamically adjust the rolling production scheduling process of the strip steel based on the order requirements.

[0102] Please refer to Figure 4 , an embodiment of the present application further provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, it implements the steps of any method of the production scheduling device for thin-gauge strip steel.

[0103] Since the electronic device introduced in this embodiment is the device adopted for a production scheduling device for thin-gauge strip steel in an embodiment of the present application, based on the method introduced in an embodiment of the present application, those skilled in the art can understand the specific implementation manners and various variations of the electronic device in this embodiment. Therefore, the specific implementation of how this electronic device implements the method in an embodiment of the present application will not be described in detail here. As long as the device adopted by those skilled in the art to implement the method in an embodiment of the present application belongs to the scope to be protected by the present application.

[0104] In the specific implementation process, when the computer program 311 is executed by the processor, it can implement any implementation manner in the corresponding embodiment of the first aspect.

[0105] It should be noted that in the above embodiments, each embodiment is described with its own emphasis. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0106] Those skilled in the art should understand that the embodiments of the present application can provide methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0107] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can also be implemented. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded computers, or other programmable data processing devices to generate a machine, so that the instructions executed by the processors of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one or more of the flows Figure 1 or blocks.

[0108] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implements the functions specified in Figure 1 one or more of the flows Figure 1 or blocks.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one or more of the flows Figure 1 or blocks.

[0110] The embodiments of the present application also provide a computer program product, which includes computer software instructions. When the computer software instructions run on a processing device, the processing device is caused to execute Figure 1The process of a scheduling method for thin-gauge strip steel in the corresponding embodiment.

[0111] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are fully or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless manner (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

[0112] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0113] In several embodiments provided by the present application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, indirect couplings or communication connections of devices or units, and can be in electrical, mechanical, or other forms.

[0114] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0115] In addition, in each embodiment of the present application, each functional unit can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0116] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0117] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

[0118] Although the preferred embodiments of this specification have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications that fall within the scope of this specification.

[0119] Obviously, those skilled in the art can make various changes and deformations to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and deformations of this specification fall within the scope of the claims of this specification and their equivalent technologies, this specification is also intended to include these changes and deformations.

Claims

1. A method for scheduling production of thin-gauge strip steel, characterized in that: The method comprises: Obtaining order requirements, wherein the order requirements include a thickness range and a production quantity of a target product; Based on the order requirements, the rolling scheduling process of the strip steel is dynamically adjusted.

2. The method for scheduling production of thin-gauge steel strip according to claim 1, characterized in that: The process of dynamically adjusting the rolling production schedule of the strip steel based on the order demand includes: Allocate orders to different production batches based on target products in different thickness ranges; The product thickness range of each production furnace is optimized to reduce the generation of transition materials.

3. The method for scheduling production of thin-gauge steel strip according to claim 1, characterized in that: Also includes: Based on the production quantity, continuous production of products in the same thickness range is prioritized to reduce the number of thickness adjustments during the rolling process.

4. The method for scheduling production of thin-gauge steel strip according to claim 3, characterized in that: Also includes: The continuous rolling kilometres of the product with the first preset thickness is controlled to be less than or equal to the preset kilometres.

5. The method for scheduling production of thin-gauge steel strip according to claim 1, characterized in that: Also includes: When the target product thickness is the second preset thickness, at least 8 blocks are set, wherein the blocks are thickness controls corresponding to the strip tracking number; When the target product thickness is the third preset thickness, at least 6 pieces are provided; When the target product thickness is a fourth preset thickness, at least two pieces are provided; When the target product thickness is the fifth preset thickness, at least 4 pieces are provided; When the target product thickness is the sixth preset thickness, at least 7 pieces are provided.

6. The method for scheduling production of thin-gauge steel strip according to claim 1, characterized in that: Also includes: When the target product thickness is a thicker specification, the thicker specification product is produced as the first batch and the last batch; When the target product is of a thinner thickness, the thinner product is arranged to be produced in an intermediate heat; According to the change of the thickness of the target product, the decarburization process is dynamically adjusted, wherein the decarburization process includes a single decarburization process and a double decarburization process.

7. The method for scheduling production of thin-gauge steel strip according to claim 1, characterized in that: Also includes: When the target product thickness is 1.3 mm and 1.4 mm, the multiple rapid transition thickness control method is not used; In the production of the product with a target product thickness less than or equal to 1.2 mm, a slab with a first preset length is used for rolling, wherein the first preset length is 10.5 m to 11 m; In the production of the target product with a thickness greater than 1.2 mm, a slab with a second preset length is used for rolling, wherein the second preset length is 11.5 m.

8. A production arrangement device for thin-gauge strip steel, characterized in that: include: An order acquisition unit, used to acquire order requirements, wherein the order requirements include a thickness range and a production quantity of a target product; The rolling adjustment unit dynamically adjusts the rolling scheduling process of the strip steel based on the order requirements.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement the steps of the method for scheduling production of thin-gauge steel strip as described in any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the production scheduling method for thin-gauge steel strip according to any one of claims 1 to 7 is implemented.

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