A strategy execution control method and apparatus for multi-piece steel rolling

Abstract

The application provides a multi-steel rolling strategy execution control method and device, the method comprises the following steps: generating group slab rolling rhythm time under group slab rolling strategy and continuous rolling rhythm time under continuous rolling strategy according to total multi-steel rolling time, waiting time, new rolling mill roller bed information and slab information; determining multi-steel rolling strategy according to group slab rolling rhythm time and continuous rolling rhythm time, and controlling and executing multi-steel rolling according to the multi-steel rolling strategy; comparing the calculation model and process path of the multi-steel group slab rolling strategy and the multi-steel continuous rolling strategy by setting the waiting roller bed as a bypass roller bed and combining the rolling parameters of typical products in the plate yard, determining and executing the multi-steel rolling strategy, reducing the equipment complexity, production cost and requirement for control ability, and thus improving the production efficiency of the plate and the equipment utilization rate.

Description

Technical Field

[0001] This invention relates to the field of thick steel plate rolling technology, and more particularly to a strategy execution control method and apparatus for rolling multiple steel plates. Background Technology

[0002] The process layout of a heavy plate production line varies depending on market demand, land area, investment, and capacity. When using thermomechanical controlled rolling (TMCP), the long heating time of the intermediate billets can prevent the mill's capacity from being fully utilized. Related technologies in medium and heavy plate controlled rolling mainly focus on optimizing the heating time and space utilization during the rolling process. This is achieved primarily through different mechanical structures (such as side-roll stands and lifting mechanisms) and precise control capabilities to optimize both space and time. However, adding extra mechanical structures increases equipment complexity and production costs, leading to higher requirements for control capabilities, thereby reducing the production efficiency and equipment utilization rate of medium and heavy plates. Summary of the Invention

[0003] One objective of this invention is to provide a strategy execution control method for multi-piece steel rolling. This method involves setting the waiting-to-warm-up roller table as a bypass roller table, and comparing the calculation models and process paths of multi-piece steel billet rolling strategies and multi-piece steel continuous rolling strategies based on the rolling parameters of typical products in a heavy plate mill. This allows for the determination and execution of the multi-piece steel rolling strategy, reducing equipment complexity, production costs, and control capability requirements, thereby improving the production efficiency and equipment utilization rate of medium and heavy plates. Another objective of this invention is to provide a strategy execution control device for multi-piece steel rolling. A further objective of this invention is to provide a computer-readable medium. A final objective of this invention is to provide a computer device.

[0004] To achieve the above objectives, this invention discloses a strategy execution control method for multi-piece steel rolling, comprising: Obtain the total rolling time of multiple steel pieces, waiting time, information on the new rolling mill roller table and slab information. The new rolling mill includes bypass roller table. Based on the total rolling time of multiple steel blocks, waiting time, information on the new rolling mill roller table, and slab information, the rolling rhythm time of the billet grouping strategy and the continuous rolling rhythm time of the continuous rolling strategy are generated. Based on the rolling rhythm time of billet assembly and the rolling rhythm time of continuous rolling, a multi-piece steel rolling strategy is determined, and the multi-piece steel rolling is controlled and executed according to the multi-piece steel rolling strategy.

[0005] Preferably, the total rolling time for multiple steel blocks includes the preparation time before rolling in the first stage, the rolling time in the first stage, the preparation time before rolling in the second stage, and the rolling time in the second stage. Based on the total rolling time of multiple steel blocks, waiting time, new rolling mill roller table information, and slab information, the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy are generated, including: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the waiting time, the information of the new rolling mill roller table and the slab information, the maximum number of steel plates in the rolling mill area under the billet rolling strategy is generated. Based on the maximum number of steel plates in the mill zone under the billet rolling strategy, the preparation time before the first stage rolling, the first stage rolling time, the preparation time before the second stage rolling, the second stage rolling time, and the waiting time, the billet rolling rhythm time is generated. Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, the waiting time, the information of the new rolling mill roller table and the slab information, the maximum number of steel plates in the rolling mill area under the continuous rolling strategy is generated. Based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, the waiting time, and the number of steel plates of the same specification continuously rolled in the current batch, the continuous rolling rhythm time under the continuous rolling strategy is generated.

[0006] Preferably, the information on the new rolling mill roller table includes the length of the bypass roller table and the safe distance for the bypass roller table to swing; the information on the slab includes the safe distance between the slabs waiting to be heated and the length of the steel plate waiting to be heated. Based on the preparation time before the first stage of rolling, the first stage of rolling time, the preparation time before the second stage of rolling, the waiting time, the information on the new rolling mill roller table, and the slab information, the maximum number of steel plates in the rolling mill zone under the billet rolling strategy is generated, including: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, and the waiting time, the number of steel plates under the time-based billet rolling strategy is generated. Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety spacing, and waiting steel plate length, the number of steel plates under the space-based billet rolling strategy is generated. By comparing the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy, the smaller one is determined as the maximum number of steel plates in the mill zone under the billet rolling strategy.

[0007] Preferably, the information on the new rolling mill roller table includes the length of the bypass roller table and the safe distance for the bypass roller table to swing; the information on the slab includes the safe distance between the slabs waiting to be heated and the length of the steel plate waiting to be heated. Based on the preparation time before the first stage of rolling, the first stage rolling time, the preparation time before the second stage of rolling, the second stage rolling time, the waiting time, the information on the new rolling mill roller table, and the slab information, the maximum number of steel plates in the rolling mill zone under the continuous rolling strategy is generated, including: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, and the waiting time, the number of steel plates under the time-based continuous rolling strategy is generated. Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety distance, and waiting steel plate length, the number of steel plates under the space-based continuous rolling strategy is generated. Comparing the number of steel plates under a time-based continuous rolling strategy and the number of steel plates under a space-based continuous rolling strategy, the smaller one is determined as the maximum number of steel plates in the mill zone under the continuous rolling strategy.

[0008] Preferably, a multi-slab rolling strategy is determined based on the billet rolling rhythm time and the continuous rolling rhythm time, and the multi-slab rolling is controlled and executed according to the multi-slab rolling strategy, including: Determine whether the rolling rhythm time of the billet group is less than the continuous rolling rhythm time; If so, the billet rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy; If not, the continuous rolling strategy is determined to be a multi-piece steel rolling strategy, and multi-piece steel rolling is performed in accordance with the continuous rolling strategy.

[0009] Preferably, the method further includes: Determine whether the number of continuously rolled steel plates of the same specification in the current batch is less than the preset batch steel plate number threshold, and whether the maximum number of steel plates in the mill area under the billet rolling strategy is greater than the preset billet steel plate number threshold. If both are true, the billet rolling strategy is determined as the multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy.

[0010] Preferably, the method further includes: Obtain the remainder of the quotient of the waiting time and the total rolling time of multiple steel pieces; Determine whether the remainder is less than a preset remainder threshold, and whether the number of continuously rolled steel plates of the same specification in the current batch is greater than a preset batch steel plate quantity threshold. If both are true, the continuous rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the continuous rolling strategy.

[0011] The present invention also discloses a strategy execution control device for multi-piece steel rolling, comprising: The first acquisition unit is used to acquire the total rolling time of multiple steel pieces, the waiting time, the information of the new rolling mill roller table and the slab information. The new rolling mill includes a bypass roller table. The strategy rhythm time generation unit is used to generate the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy based on the total rolling time of multiple steel blocks, the waiting time, the new rolling mill roller table information and the slab information. The first strategy determination execution unit is used to determine the multi-piece steel rolling strategy based on the billet rolling rhythm time and the continuous rolling rhythm time, and to control the execution of multi-piece steel rolling according to the multi-piece steel rolling strategy.

[0012] Preferably, the total rolling time for multiple steel blocks includes the preparation time before rolling in the first stage, the rolling time in the first stage, the preparation time before rolling in the second stage, and the rolling time in the second stage. The strategy rhythm time generation unit is specifically used to generate the maximum number of steel plates in the rolling mill area under the billet rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the waiting time, the new rolling mill roller table information, and the slab information; to generate the billet rolling rhythm time based on the maximum number of steel plates in the rolling mill area under the billet rolling strategy, the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time; and to generate the billet rolling rhythm time based on the first-stage pre-rolling preparation time... The maximum number of steel plates in the mill zone under the continuous rolling strategy is generated based on the following information: rolling time, first-stage rolling time, second-stage rolling preparation time, second-stage rolling time, waiting time, new mill roller table information, and slab information. The continuous rolling rhythm time under the continuous rolling strategy is then generated based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the first-stage rolling preparation time, the first-stage rolling time, the second-stage rolling preparation time, the second-stage rolling time, the waiting time, and the number of steel plates of the same specification continuously rolled in the current batch.

[0013] Preferably, the information on the new rolling mill roller table includes the length of the bypass roller table and the safe distance for the bypass roller table to swing; the information on the slab includes the safe distance between the slabs waiting to be heated and the length of the steel plate waiting to be heated. The strategy rhythm time generation unit is specifically used to generate the number of steel plates under the time-based billet rolling strategy based on the preparation time before the first stage of rolling, the first stage of rolling, the preparation time before the second stage of rolling, and the waiting time; and to generate the number of steel plates under the space-based billet rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

[0014] Preferably, the information on the new rolling mill roller table includes the length of the bypass roller table and the safe distance for the bypass roller table to swing; the information on the slab includes the safe distance between the slabs waiting to be heated and the length of the steel plate waiting to be heated. The strategy rhythm time generation unit is specifically used to generate the number of steel plates under the time-based continuous rolling strategy based on the preparation time before the first stage of rolling, the first stage rolling time, the preparation time before the second stage of rolling, the second stage rolling time, and the waiting time; and to generate the number of steel plates under the space-based continuous rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the continuous rolling strategy.

[0015] Preferably, the first strategy determination execution unit is specifically used to determine whether the billet rolling rhythm time is less than the continuous rolling rhythm time; if so, the billet rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy; if not, the continuous rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the continuous rolling strategy.

[0016] Preferably, the device further includes: The first judgment unit is used to determine whether the number of continuously rolled steel plates of the same specification in the current batch is less than the preset batch steel plate number threshold, and whether the maximum number of steel plates in the mill area under the billet rolling strategy is greater than the preset billet steel plate number threshold. The second strategy determines the execution unit, which, if all are yes, determines the billet rolling strategy as the multi-piece steel rolling strategy and executes multi-piece steel rolling according to the billet rolling strategy.

[0017] Preferably, the device further includes: The second acquisition unit is used to obtain the remainder of the quotient of the waiting time and the total rolling time of multiple steel pieces; The second judgment unit is used to determine whether the remainder is less than a preset remainder threshold and whether the number of continuously rolled steel plates of the same specification in the current batch is greater than a preset batch steel plate number threshold. The third strategy determines the execution unit, which, if all are true, determines the continuous rolling strategy as a multi-piece steel rolling strategy and executes multi-piece steel rolling according to the continuous rolling strategy.

[0018] The present invention also discloses a computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements the method described above.

[0019] The present invention also discloses a computer device, including a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, wherein the processor executes the program to implement the method described above.

[0020] The present invention also discloses a computer program product, including a computer program / instruction, which, when executed by a processor, implements the method described above.

[0021] This invention acquires the total rolling time of multiple steel blocks, the waiting time, the roller table information of a new type of rolling mill, and slab information. The new type of rolling mill includes a bypass roller table. Based on the total rolling time of multiple steel blocks, the waiting time, the roller table information of the new type of rolling mill, and the slab information, it generates the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy. Based on the billet rolling rhythm time and the continuous rolling rhythm time, it determines the multiple steel block rolling strategy and controls the rolling of multiple steel blocks according to the strategy. By setting the waiting roller table as a bypass roller table, and combining the rolling parameters of typical products in the heavy plate mill, it compares the calculation models and process paths of the multiple steel block billet rolling strategy and the multiple steel block continuous rolling strategy to determine and execute the multiple steel block rolling strategy. This reduces equipment complexity, production costs, and the requirements for control capabilities, thereby improving the production efficiency and equipment utilization rate of medium and heavy plates. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A single-stand TMCP rolling process flow is provided for embodiments of the present invention; Figure 2 A schematic diagram of a novel single-stand rolling mill thick plate production line provided for an embodiment of the present invention; Figure 3 A schematic diagram of a continuous rolling process for multiple steel blocks using a single-stand rolling mill, provided in an embodiment of the present invention; Figure 4 A flowchart illustrating a strategy execution control method for multi-piece steel rolling, provided as an embodiment of the present invention; Figure 5 A flowchart illustrating another strategy execution control method for multi-piece steel rolling provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a strategy execution control device for multi-piece steel rolling provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that the strategy execution control method and apparatus for multi-piece steel rolling disclosed in this application can be used in the field of artificial intelligence technology, or in any field other than artificial intelligence technology. The application field of the strategy execution control method and apparatus for multi-piece steel rolling disclosed in this application is not limited.

[0026] To facilitate understanding of the technical solution provided in this application, the relevant content of the technical solution will be explained below. Thick plates, as a core product in the metallurgical field, are important materials for infrastructure construction, and their technological level and product quality are key indicators of the development level of the steel industry. Steel enterprises need to continuously improve the microstructure and properties of their products, enhance product quality and added value to maintain competitiveness. Therefore, thick plate manufacturers generally adopt thermomechanical controlled process (TMCP) rolling technology. This process refines ferrite grains, controls the phase transformation process, and improves the mechanical properties of the material by controlling deformation temperature, deformation regime, and cooling regime, producing steel with better toughness and higher strength.

[0027] The TMCP production process for thick plates is controlled by adjusting parameters such as rolling temperature and deformation regime in the first and second stages. The first stage rolling refines the austenite grains (γ) through repeated deformation and recrystallization; the second stage refines and elongates the austenite grains, increases the number of austenite grain boundaries and generates slip bands, providing favorable conditions for ferrite (α) nucleation, thereby obtaining fine-grained ferrite. Figure 1 A single-stand TMCP rolling process flow provided for embodiments of the present invention, such as... Figure 1As shown, the horizontal axis represents time in seconds (s), and the vertical axis represents temperature in degrees Celsius (°C). Ar1 is the end temperature of the austenite-ferrite transformation, i.e., the temperature at which ferrite formation is complete, and Ar3 is the start temperature of the austenite-ferrite transformation, i.e., the highest temperature at which austenite can stably exist. The recrystallization region is where, under certain temperature and deformation conditions, deformed austenite grains recrystallize, forming new, uniform, and fine recrystallized austenite grains. Recrystallized austenite grains are austenite grains after the recrystallization process; these grains are finer than the grains before deformation, contributing to improved material strength and toughness. The non-recrystallization region is where, at higher deformation amounts or lower temperatures, austenite grains may not recrystallize and remain in a deformed state. Deformed austenite grains are located in the non-recrystallization region; the austenite grains undergo deformation due to plastic deformation, and defects such as dislocations may occur in the internal structure of the grains. The (γ+α) two-phase region exists below the Ar3 temperature, where austenite begins to transform into ferrite, forming a two-phase region where austenite and ferrite coexist. Within this two-phase region, rapid cooling can influence the phase transformation process, promoting the formation of fine grains. Deformed (γ+α) grains occur within the two-phase region where austenite grains further deform during cooling, forming deformed mixed austenite and ferrite grains. For example... Figure 1 As shown, two-stage rolling refers to rolling the austenite recrystallization zone first, followed by rolling the non-recrystallization zone, which is divided into two stages. Three-stage rolling refers to rolling the recrystallization zone, the non-recrystallization zone, and the two-phase zone, which is carried out in three stages.

[0028] The process layout of thick plate production lines varies depending on market demand, land area, investment, and capacity. Based on the number of rolling mills, there are two process layouts: single-stand rolling mills and two-stand rolling mills. Two-stand mills are suitable for high-capacity production plants with large land areas. In a two-stand thick plate production line, two mills separately complete the rolling in the recrystallization and non-recrystallization zones. A long warming roller table is set between the two mills, and a cross-rolling (one in, one out) method is used to improve production efficiency. Single-stand thick plate production lines complete the rolling in both the recrystallization and non-recrystallization zones with a single mill. This process layout is suitable for production plants with lower investment and smaller land areas. Its advantage lies in the longer warming roller table, which facilitates the rolling of ultra-long plates. However, when using thermomechanically controlled process (TMCP) rolling, the long warming time of the intermediate billet can lead to insufficient mill capacity. Related research shows that when a two-stand rolling mill adopts the TMCP rolling process, its capacity decreases by about 20%, and when a single-stand rolling mill adopts the TMCP rolling process, its capacity decreases by about 40%. Therefore, studying the multi-piece steel rolling strategy of a single-stand rolling mill thick plate production line is of great significance for improving rolling mill capacity and balancing production rhythm.

[0029] Compared to two-stand rolling mills, single-stand rolling mills have shorter rolling lines, enabling the rolling of ultra-long plates and improving production efficiency and yield. Table 1 compares the advantages and disadvantages of the process layouts of two-stand and single-stand rolling mills. Table 1

[0030] This invention, based on the factory design of a heavy plate rolling mill production line, aims to optimize rolling strategies, improve production efficiency, and balance production rhythm. Combining fundamental rolling process theory, it develops novel process layouts, control equipment, multi-piece steel rolling control strategies, and process algorithms for both single-stand and double-stand rolling mills. It can analyze the production rhythm of each process, improve equipment utilization and rolling capacity, optimize the process layout and equipment selection of heavy plate production lines, provide theoretical support for the precise design of heavy plate projects, and improve the design quality of heavy plate engineering.

[0031] This invention takes a single-stand rolling mill as an example. The TMCP production process of a thick plate production line on a single-stand rolling mill is characterized by the fact that the first-stage rolling and the second-stage rolling are completed on the same stand. After the first-stage rolling is completed, the slab needs to be cooled to the non-recrystallization zone or even the two-phase zone on the waiting roller table. The waiting time depends on the thickness of the waiting slab and the final rolling temperature and other process conditions, which results in the rolling mill capacity not being fully released. For the TMCP process, the waiting time of the intermediate slab is long.

[0032] Since the number of steel plates in a batch during the multi-plate rolling process is greatly affected by the space of the waiting roller table, the method of arranging a transverse roller table after the rolling mill increases the number of steel plates rolled in batches, maximizes the use of the waiting time, and improves the rolling mill utilization rate and capacity.

[0033] Based on the traditional single-stand thick plate production line process layout, the number of steel plates rolled from multiple billets is calculated, and the first-stage rolling time is greater than or equal to the second-stage rolling time. According to the time principle (first-stage rolling time, second-stage rolling time, and waiting time), a calculation model is generated to calculate the number of steel plates rolled from multiple billets.

[0034] Specifically, through Calculate the number of steel plates rolled from multiple steel billets. Among them, This refers to the number of steel plates rolled from multiple steel billets generated based on time in a traditional single-stand thick plate production line. Waiting time, in seconds; The preparation time before the second-stage rolling is measured in seconds. This refers to the number of steel plates awaiting heating on the transverse roller conveyor. The transverse movement time of the steel plate on the transverse roller conveyor is expressed in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). This is the length of the intermediate billet, in meters. The safe distance between slabs awaiting heating is in meters (m). The speed of the roller conveyor is measured in m / s.

[0035] The quantity of steel plates to be rolled in multiple batches is calculated based on spatial principles (lengths of the straight roller conveyor before the mill, the straight roller conveyor after the mill, and the transverse roller conveyor).

[0036] in, The number of steel plates rolled from multiple steel billets generated in a traditional single-stand thick plate production line based on space generation; The number of steel plates accommodated by the rear roller table and the transverse roller table of the first-stage rolling mill; The number of steel plates accommodated by the front roller table and the transverse roller table of the two-stage rolling mill; This refers to the total length of the roller conveyor after the rolling mill, in meters. The length of the steel plate to be heated is in meters. The safe distance for the roller conveyor to swing under temperature conditions, in meters; The safe distance between slabs awaiting heating is in meters (m). This is the total length of the transverse roller conveyor, in meters (m). This refers to the total length of the roller conveyor in front of the rolling mill, in meters. The final length of the rolled steel plate is expressed in meters (m).

[0037] In the traditional single-stand thick plate production line, the number of steel plates in a batch during continuous rolling is affected by the time consumed by the repeated movement of the slabs before and after the mill. If a transverse roller table is added, the steel plates need to be moved up and down on the transverse roller table after each rolling, which consumes a lot of time.

[0038] Based on the original process layout, a calculation model is generated to calculate the number of steel plates continuously rolled in a multi-slab rolling mill, according to the time principle (first-stage rolling time, second-stage rolling time, and waiting time).

[0039] in, The maximum number of steel plates in the rolling mill zone under the time-based multi-piece continuous rolling strategy of a traditional single-stand thick plate production line; Waiting time, in seconds; Total rolling time, in seconds; The preparation time before the second-stage rolling is measured in seconds. The preparation time before the second-stage rolling is measured in seconds. The transverse movement time of the steel plate on the transverse roller conveyor is expressed in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). This is the length of the intermediate billet, in meters. The safe distance between slabs awaiting heating is in meters (m). The speed of the roller conveyor is measured in m / s.

[0040] The number of steel plates in the mill area for continuous rolling of multiple steel plates based on the original process layout is calculated using a model that is consistent with the calculation method for the rolling strategy of multiple steel billets, based on spatial principles (length of the straight roller table before the mill, the straight roller table after the mill, and the transverse roller table). This model will not be elaborated further here.

[0041] Currently, the main rolling strategies for multiple steel plates are multi-plate billet rolling and multi-plate continuous rolling. Multi-plate billet rolling involves performing the first-stage rolling of subsequent steel plates in the same batch during the warming process after the first steel plate completes its first-stage rolling; once the temperature of the first steel plate meets the requirements for the second-stage rolling process, the second-stage rolling of that batch of steel plates is then performed sequentially. Multi-plate continuous rolling involves performing the second-stage rolling of the previous steel plate during the warming process after the current steel plate completes its first-stage rolling, and then performing the second-stage rolling of the current steel plate. The biggest difference between multi-plate billet rolling and multi-plate continuous rolling is that multi-plate billet rolling completes the first-stage rolling of all steel plates in a batch before performing the second-stage rolling of all steel plates in that batch; multi-plate continuous rolling involves sequentially performing the first-stage and second-stage rolling of different steel plates on the rolling mill.

[0042] It is worth noting that the strategy execution control method for multi-piece steel rolling based on the original process layout can also be referred to. Figure 4 or Figure 5 The strategy execution control method for multi-piece steel rolling shown in this embodiment of the invention is not limited thereto.

[0043] Figure 2 A schematic diagram of a novel single-stand rolling mill thick plate production line provided in an embodiment of the present invention is shown below. Figure 2 As shown, the new single-stand rolling mill thick plate production line includes a descaling machine 100, a rolling mill 200, a bypass roller conveyor 300, and a pre-straightening machine 400. The bypass roller conveyor 300 is used for intermediate billet warming. By arranging the bypass roller conveyor 300 on the operating side of the rolling mill 200, the time consumption of the intermediate billet reciprocating movement is reduced, the warming time is utilized to the maximum extent, and the rolling mill efficiency is improved.

[0044] Figure 3 This is a schematic diagram of a continuous rolling process for multiple steel blocks using a single-stand rolling mill, as provided in an embodiment of the present invention. Figure 3As shown, the rolling process includes a heating furnace area, a rolling mill area, and a cooling area. The red dotted line is the rolling center line, and the blue dotted line is the bypass roller table center line.

[0045] In step 1, steel plate No. 1, marked as 1R1, is undergoing first-stage rolling in the rolling mill area; steel plate No. 2, marked as 2#, is undergoing heating in the heating furnace area.

[0046] In step 2, steel plate No. 1 completes the first stage of rolling and is marked as 1C1. It is waiting to be heated in the bypass roller table of the rolling mill area; steel plate No. 2 is marked as 2R1 and is undergoing the first stage of rolling in the rolling mill area; steel plate No. 3 is marked as 3# and is being heated in the heating furnace area.

[0047] In step 3, steel plate No. 1 completes the first stage of waiting for temperature and is marked as 1C1. It is in the rolling mill area for the second stage of pre-rolling preparation. Steel plate No. 2 is marked as 2C1 and is waiting for temperature in the bypass roller table of the rolling mill area. Steel plate No. 3 is marked as 3R1 and is in the rolling mill area for the first stage of rolling.

[0048] In step 4, steel plate No. 1 completes the pre-rolling preparation for the second stage and is marked as 1R2, and is undergoing the second stage rolling in the rolling mill area; steel plate No. 2, marked as 2C1, is waiting to be heated in the bypass roller table of the rolling mill area; steel plate No. 3, marked as 3C1, is waiting to be heated in the bypass roller table of the rolling mill area; and steel plate No. 4, marked as 4#, is being heated in the heating furnace area.

[0049] In step 5, steel plate No. 1 completes the second stage of rolling and is now marked as 1#, and is cooling in the cooling zone; steel plate No. 2 completes the first stage of warming and is now marked as 2C1, and is in the rolling mill area for pre-second stage rolling preparation; steel plate No. 3 is now marked as 3C1 and is in the bypass roller table of the rolling mill area for warming; steel plate No. 4 is now marked as 4R1 and is in the rolling mill area for the first stage of rolling.

[0050] In step 6, steel plate No. 2 completes the pre-rolling preparation for the second stage and is marked as 2R2, and is undergoing the second stage rolling in the rolling mill area; steel plate No. 3, marked as 3C1, is waiting to be heated in the bypass roller table of the rolling mill area; steel plate No. 4, marked as 4C1, is waiting to be heated in the bypass roller table of the rolling mill area; and steel plate No. 5, marked as 5#, is being heated in the heating furnace area.

[0051] In step 7, steel plate No. 2 completes the second stage of rolling and is now marked as 2#, and is cooling in the cooling zone; steel plate No. 3 completes the first stage of warming and is now marked as 3C1, and is in the rolling mill area for pre-second stage rolling preparation; steel plate No. 4 is now marked as 4C1 and is in the bypass roller table of the rolling mill area for warming; steel plate No. 5 is now marked as 5R1 and is in the rolling mill area for the first stage of rolling.

[0052] The subsequent steel plate is repeatedly rolled in steps 4 to 7 to achieve continuous rolling of multiple steel plates, which will not be described in detail in this embodiment of the invention.

[0053] The following uses a strategy execution control device for multi-piece steel rolling as an example to illustrate the implementation process of the strategy execution control method for multi-piece steel rolling provided in this embodiment of the invention. It is understood that the execution subject of the strategy execution control method for multi-piece steel rolling provided in this embodiment of the invention includes, but is not limited to, a strategy execution control device for multi-piece steel rolling.

[0054] Figure 4 A flowchart of a strategy execution control method for multi-piece steel rolling provided in an embodiment of the present invention is shown below. Figure 4 As shown, the method includes: Step 101: Obtain the total rolling time, waiting time, new rolling mill roller table information, and slab information for multiple steel pieces.

[0055] In this embodiment of the invention, the novel rolling mill includes a bypass roller table.

[0056] Step 102: Based on the total rolling time of multiple steel blocks, the waiting time, the information of the new rolling mill roller table and the slab information, generate the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy.

[0057] Step 103: Determine the multi-piece steel rolling strategy based on the billet rolling rhythm time and the continuous rolling rhythm time, and control the execution of multi-piece steel rolling according to the multi-piece steel rolling strategy.

[0058] The technical solution provided in this invention involves acquiring the total rolling time of multiple steel blocks, the waiting time, the roller table information of the new rolling mill, and the slab information. The new rolling mill includes a bypass roller table. Based on the total rolling time of multiple steel blocks, the waiting time, the roller table information of the new rolling mill, and the slab information, the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy are generated. Based on the billet rolling rhythm time and the continuous rolling rhythm time, the multi-steel rolling strategy is determined, and the multi-steel rolling is controlled and executed according to the multi-steel rolling strategy. By setting the waiting roller table as a bypass roller table, the calculation models and process paths of the multi-steel billet rolling strategy and the multi-steel continuous rolling strategy are compared with the rolling parameters of typical products in the heavy plate mill. The multi-steel rolling strategy is determined and executed, reducing equipment complexity, production costs, and the requirements for control capabilities, thereby improving the production efficiency and equipment utilization rate of medium and heavy plates.

[0059] Figure 5 A flowchart of another strategy execution control method for multi-piece steel rolling provided by an embodiment of the present invention is shown below. Figure 5 As shown, the method includes: Step 201: Obtain the total rolling time of multiple steel pieces, the waiting time, the information of the new rolling mill roller table, and the slab information.

[0060] In this embodiment of the invention, each step is executed by a strategy execution control device for rolling multiple steel blocks.

[0061] In this embodiment of the invention, the total rolling time for multiple steel blocks includes the preparation time before rolling in the first stage, the rolling time in the first stage, the preparation time before rolling in the second stage, and the rolling time in the second stage; the new mill roller table information includes the length of the straight roller table before the mill, the straight roller table after the mill, the bypass roller table, and the safe distance for the bypass roller table to swing; the slab information includes the safe spacing between slabs waiting to be heated and the length of the steel plate waiting to be heated.

[0062] In this embodiment of the invention, the novel rolling mill includes a bypass roller table, which is used for the steel plate to wait for heating.

[0063] Step 202: Based on the preparation time before the first stage of rolling, the first stage of rolling time, the second stage of rolling time, the waiting time, the information of the new rolling mill roller table and the slab information, generate the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

[0064] In this embodiment of the invention, the novel rolling mill roller table information includes the lengths of the front straight roller table, the rear straight roller table, the bypass roller table, and the bypass roller table swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated.

[0065] In this embodiment of the invention, step 202 specifically includes: Step 2021: Based on the preparation time before the first stage of rolling, the first stage of rolling time, the preparation time before the second stage of rolling, and the waiting time, generate the number of steel plates under the time-based billet rolling strategy.

[0066] Specifically, through The preparation time before the first stage of rolling, the first stage rolling time, the preparation time before the second stage rolling, and the waiting time are calculated to generate the number of steel plates under the time-based billet rolling strategy. Among these calculations, The preparation time before the second-stage rolling is measured in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). The number of steel plates under a time-based billet rolling strategy; The time to reach the desired temperature is measured in seconds (s).

[0067] It is worth noting that this model is applicable to: one-stage rolling time Greater than or equal to the two-stage rolling time ,vice versa.

[0068] In this embodiment of the invention, the waiting time of the new rolling mill thick plate production line is not limited by the space of the waiting roller table, nor is it affected by the reciprocating motion of the steel plate before and after the rolling mill. The waiting time is utilized to the maximum extent, and the rolling mill utilization rate and capacity are greatly improved.

[0069] Step 2022: Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety spacing, and waiting steel plate length, generate the number of steel plates under the space-based billet rolling strategy.

[0070] Specifically, through , to perform calculations and generate. Among them, This refers to the length of the bypass roller conveyor. The number of steel plates under a space-based billet rolling strategy; The length of the steel plate to be heated is in meters. The safe distance for the roller conveyor to swing under temperature conditions, in meters; The safe distance between the slabs awaiting heating is in meters (m).

[0071] Step 2023: Compare the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

[0072] Specifically, under the multi-slab billet rolling strategy, the actual calculation model for the number of billet plates in each batch is as follows: Specifically, the smaller value between the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy is taken as the maximum number of steel plates in the mill zone under the billet rolling strategy. This represents the maximum number of steel plates within the rolling mill zone under the billet rolling strategy. The number of steel plates under a space-based billet rolling strategy. The number of steel plates under a time-based billet rolling strategy.

[0073] In this embodiment of the invention, the length of the straight roller table before and after the mill in the process layout of the new rolling mill thick plate production line only needs to meet the sum of the maximum rolling length of the steel plate and the length of the intermediate billet. The number of steel plates in the rolling area mainly depends on the length of the bypass roller table.

[0074] Step 203: Generate the billet rolling rhythm time based on the maximum number of steel plates in the rolling mill area under the billet rolling strategy, the preparation time before the first stage rolling, the first stage rolling time, the preparation time before the second stage rolling, the second stage rolling time, and the waiting time.

[0075] Specifically, through The maximum number of steel plates in the mill zone under the billet rolling strategy, the preparation time before the first stage of rolling, the first stage rolling time, the preparation time before the second stage of rolling, the second stage rolling time, and the waiting time are calculated to generate the billet rolling rhythm time. Among them, For the billet rolling rhythm time; This represents the maximum number of steel plates in the mill zone under the billet rolling strategy. The preparation time before the second-stage rolling is measured in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). The preparation time before the second-stage rolling is measured in seconds. The time to reach the desired temperature is measured in seconds (s).

[0076] Step 204: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, the waiting time, the information of the new rolling mill roller table and the slab information, generate the maximum number of steel plates in the rolling mill area under the continuous rolling strategy.

[0077] In this embodiment of the invention, the novel rolling mill roller table information includes the lengths of the front straight roller table, the rear straight roller table, the bypass roller table, and the bypass roller table swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated.

[0078] In this embodiment of the invention, step 204 specifically includes: Step 2041: Based on the preparation time before the first stage of rolling, the first stage of rolling, the preparation time before the second stage of rolling, the second stage of rolling, and the waiting time, generate the number of steel plates under the time-based continuous rolling strategy.

[0079] Specifically, through , The preparation time before the first stage of rolling, the first stage rolling time, the preparation time before the second stage rolling, the second stage rolling time, and the waiting time are calculated to generate the number of steel plates under a time-based continuous rolling strategy. Among these calculations, The number of steel plates under a time-based continuous rolling strategy; The preparation time before the second-stage rolling is measured in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). The preparation time before the second-stage rolling is measured in seconds. Waiting time, in seconds; This represents the total rolling time, expressed in seconds (s).

[0080] In this embodiment of the invention, in the process layout of the new type of rolling mill thick plate production line, after setting the bypass roller table, the rolling during the waiting time can be fully utilized, the time consumed by the steel plate reciprocating back and forth in the rolling mill is reduced to the greatest extent, and the time consumed by the steel plate moving laterally between the straight roller table and the bypass roller table is also offset to the greatest extent. The waiting time is utilized to the maximum extent, the rolling mill utilization rate and capacity are greatly improved, and the number of steel plates continuously rolled from multiple steel plates is increased.

[0081] Step 2042: Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety distance, and waiting steel plate length, generate the number of steel plates under the space-based continuous rolling strategy.

[0082] Specifically, through The bypass roller length, bypass roller swing safety distance, waiting slab safety spacing, and waiting steel plate length are calculated to generate the steel plate quantity under a space-based continuous rolling strategy. This refers to the length of the bypass roller conveyor. The number of steel plates under a space-based continuous rolling strategy; The length of the steel plate to be heated is in meters. The safe distance for the roller conveyor to swing under temperature conditions, in meters; The safe distance between the slabs awaiting heating is in meters (m).

[0083] In this embodiment of the invention, in the process layout of the novel thick plate rolling mill production line, since a bypass roller table is set up for waiting for temperature, the length of the straight roller table before and after the mill only needs to meet the sum of the maximum rolling length of the steel plate and the length of the intermediate billet. The number of steel plates in the rolling area mainly depends on the length of the bypass roller table. The number of steel plates rolled in multiple batches is calculated based on the spatial principle (length of the straight roller table before the mill, the straight roller table after the mill, and the bypass roller table).

[0084] Step 2043: Compare the number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy, and determine the smaller one as the maximum number of steel plates in the mill zone under the continuous rolling strategy.

[0085] Specifically, under the multi-plate continuous rolling strategy, the number of steel plates in the rolling mill area is: Specifically, the smaller value between the number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy is taken as the maximum number of steel plates in the mill zone under the continuous rolling strategy. This represents the maximum number of steel plates within the rolling mill zone under a continuous rolling strategy. The number of steel plates under a time-based continuous rolling strategy. The number of steel plates under a space-based continuous rolling strategy.

[0086] Step 205: Based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the preparation time before the first stage of rolling, the rolling time before the first stage, the preparation time before the second stage of rolling, the rolling time before the second stage, the waiting time, and the number of steel plates of the same specification continuously rolled in the current batch, generate the continuous rolling rhythm time under the continuous rolling strategy.

[0087] In this embodiment of the invention, for the continuous rolling strategy of multiple steel plates, it is also necessary to focus on a factor in production, namely the number of steel plates of the same specification that can be continuously rolled within a batch. Based on the continuous rolling process, the rolling rhythm time for continuous rolling of multiple steel pieces is derived:

[0088] in, For continuous rolling rhythm time under continuous rolling strategy; This refers to the number of steel plates of the same specification that are continuously rolled within the current batch. This represents the maximum number of steel plates within the rolling mill zone under a continuous rolling strategy. The preparation time before the second-stage rolling is measured in seconds. The rolling time for one stage is measured in seconds (s). The preparation time before the first stage of rolling is measured in seconds (s). The preparation time before the second-stage rolling is measured in seconds. Waiting time, in seconds; This represents the total rolling time, expressed in seconds (s).

[0089] Step 206: Determine whether the billet rolling rhythm time is less than the continuous rolling rhythm time. If yes, proceed to step 207; otherwise, proceed to step 208.

[0090] In this embodiment of the invention, if the billet rolling rhythm time is less than the continuous rolling rhythm time, it indicates that the mill using the billet rolling strategy has higher efficiency, and step 207 is continued; if the billet rolling rhythm time is greater than or equal to the continuous rolling rhythm time, it indicates that the mill using the continuous rolling strategy has higher efficiency, and step 208 is continued.

[0091] Step 207: Determine the billet rolling strategy as a multi-piece steel rolling strategy, and execute multi-piece steel rolling according to the billet rolling strategy.

[0092] In this embodiment of the invention, a multi-plate rolling strategy is implemented according to the billet rolling rhythm time and the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

[0093] Step 208: Determine the continuous rolling strategy as a multi-piece steel rolling strategy, and execute multi-piece steel rolling according to the continuous rolling strategy.

[0094] In this embodiment of the invention, a multi-plate rolling strategy is implemented according to the continuous rolling rhythm time and the maximum number of steel plates in the rolling mill area under the continuous rolling strategy.

[0095] As an alternative, determine whether the number of continuously rolled steel plates of the same specification in the current batch is less than the preset batch steel plate quantity threshold, and whether the maximum number of steel plates in the mill area under the billet rolling strategy is greater than the preset billet steel plate quantity threshold; if both are true, determine the billet rolling strategy as the multi-piece steel rolling strategy, and execute multi-piece steel rolling according to the billet rolling strategy.

[0096] It is worth noting that the batch steel plate quantity threshold and the billet steel plate quantity threshold can be set according to actual needs, and the embodiments of the present invention do not limit this.

[0097] As an alternative, obtain the remainder of the quotient of the waiting time and the total rolling time of multiple steel plates; determine whether the remainder is less than a preset remainder threshold, and whether the number of steel plates of the same specification continuously rolled in the current batch is greater than a preset batch steel plate number threshold; if both are true, determine the continuous rolling strategy as the multiple steel plate rolling strategy, and execute the multiple steel plate rolling according to the continuous rolling strategy.

[0098] It is worth noting that the remainder threshold and the batch steel plate quantity threshold can be set according to actual needs, and the embodiments of the present invention do not limit this.

[0099] In this embodiment of the invention, the multi-piece continuous rolling strategy is suitable for the TMCP production process with large two-stage compression and long waiting time. Due to the large two-stage compression ratio, the first-stage rolling time is shorter and the second-stage rolling time is longer. Therefore, the rolling production efficiency is higher under the multi-piece continuous rolling mode; it is suitable for large-scale stable production on a single-stand rolling mill.

[0100] It is worth noting that the acquisition, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. The user information in the embodiments of this application was obtained through legal and compliant means, and the acquisition, storage, use, and processing of user information have been authorized and agreed upon by the client.

[0101] It is worth noting that the information collected in this application is information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of the relevant data all comply with the relevant laws, regulations and standards of the relevant countries and regions, necessary confidentiality measures have been taken, and they do not violate public order and good morals. Corresponding operation portals are provided for users to choose to authorize or refuse.

[0102] It is worth noting that the technical solution provided in this application provides users with a corresponding operation entry point, allowing users to choose to agree to or reject the automated decision-making result; if the user chooses to reject, the process will proceed to the expert decision-making process.

[0103] This invention combines the rolling length, slab length, and rolling process time and waiting time of each stage of the rolling process of typical products in a heavy plate mill; it develops a new calculation model and process path for the number of slabs and rolling rhythm of multiple steel billet rolling and continuous rolling of multiple steel billets under the process layout conditions of a single-stand rolling mill heavy plate production line, thereby improving the mill utilization rate and overall capacity, improving the quality of heavy plate engineering design, and enhancing the company's competitiveness and technological advantages in the field of heavy plate engineering design.

[0104] The technical solution of the multi-piece steel rolling strategy execution control method provided in this invention involves acquiring the total rolling time of multiple pieces of steel, the waiting time, the roller table information of the new rolling mill, and the slab information. The new rolling mill includes a bypass roller table. Based on the total rolling time of multiple pieces of steel, the waiting time, the roller table information of the new rolling mill, and the slab information, the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy are generated. Based on the billet rolling rhythm time and the continuous rolling rhythm time, the multi-piece steel rolling strategy is determined, and the multi-piece steel rolling is controlled and executed according to the multi-piece steel rolling strategy. By setting the waiting roller table as a bypass roller table, the calculation models and process paths of the multi-piece steel billet rolling strategy and the multi-piece steel continuous rolling strategy are compared with the rolling parameters of typical products in the heavy plate mill. The multi-piece steel rolling strategy is determined and executed, reducing equipment complexity, production costs, and control capability requirements, thereby improving the production efficiency and equipment utilization rate of medium and heavy plates.

[0105] Figure 6 This is a schematic diagram of a strategy execution control device for multi-piece steel rolling according to an embodiment of the present invention. This device is used to execute the aforementioned strategy execution control method for multi-piece steel rolling, such as... Figure 6 As shown, the device includes: a first acquisition unit 11, a strategy rhythm time generation unit 12, and a first strategy determination and execution unit 13.

[0106] The first acquisition unit 11 is used to acquire the total rolling time of multiple steel pieces, the waiting time, the information of the new rolling mill roller table and the slab information. The new rolling mill includes a bypass roller table.

[0107] The strategy rhythm time generation unit 12 is used to generate the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy based on the total rolling time of multiple steel blocks, the waiting time, the new rolling mill roller table information and the slab information.

[0108] The first strategy determination execution unit 13 is used to determine the multi-piece steel rolling strategy based on the billet rolling rhythm time and the continuous rolling rhythm time, and to control the execution of multi-piece steel rolling according to the multi-piece steel rolling strategy.

[0109] In this embodiment of the invention, the total rolling time for multiple steel blocks includes a first-stage pre-rolling preparation time, a first-stage rolling time, a second-stage pre-rolling preparation time, and a second-stage rolling time. The strategy rhythm time generation unit 12 is specifically used to generate the maximum number of steel plates in the rolling mill area under the billet rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the waiting time, the new rolling mill roller table information, and the slab information; to generate the billet rolling rhythm time based on the maximum number of steel plates in the rolling mill area under the billet rolling strategy, the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time; and to generate the billet rolling rhythm time based on the first-stage pre-rolling preparation time, the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time. The maximum number of steel plates in the mill zone under the continuous rolling strategy is generated based on the time, first-stage rolling time, second-stage pre-rolling preparation time, second-stage rolling time, waiting time, new mill roller table information, and slab information. Based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the first-stage pre-rolling preparation time, first-stage rolling time, second-stage pre-rolling preparation time, second-stage rolling time, waiting time, and the number of steel plates of the same specification continuously rolled in the current batch, the continuous rolling rhythm time under the continuous rolling strategy is generated.

[0110] In this embodiment of the invention, the novel rolling mill roller table information includes the bypass roller table length and the bypass roller table swing safety distance; the slab information includes the safety spacing of the slabs waiting to be heated and the length of the steel plate waiting to be heated; The strategy rhythm time generation unit 12 is specifically used to generate the number of steel plates under the time-based billet rolling strategy based on the preparation time before the first stage of rolling, the first stage of rolling, the preparation time before the second stage of rolling, and the waiting time; to generate the number of steel plates under the space-based billet rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

[0111] In this embodiment of the invention, the novel rolling mill roller table information includes the bypass roller table length and the bypass roller table swing safety distance; the slab information includes the safety spacing of the slabs waiting to be heated and the length of the steel plate waiting to be heated; The strategy rhythm time generation unit 12 is specifically used to generate the number of steel plates under the time-based continuous rolling strategy based on the preparation time before the first stage rolling, the first stage rolling time, the preparation time before the second stage rolling, the second stage rolling time, and the waiting time; to generate the number of steel plates under the space-based continuous rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the continuous rolling strategy.

[0112] In this embodiment of the invention, the first strategy determination execution unit 13 is specifically used to determine whether the billet rolling rhythm time is less than the continuous rolling rhythm time; if so, the billet rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy; if not, the continuous rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the continuous rolling strategy.

[0113] In this embodiment of the invention, the device further includes: a first judgment unit 14 and a second strategy determination and execution unit 15.

[0114] The first judgment unit 14 is used to determine whether the number of continuously rolled steel plates of the same specification in the current batch is less than the preset batch steel plate number threshold, and whether the maximum number of steel plates in the rolling mill area under the billet rolling strategy is greater than the preset billet steel plate number threshold.

[0115] The second strategy determination execution unit 15 is used to determine the billet rolling strategy as a multi-piece steel rolling strategy if all are yes, and to execute multi-piece steel rolling according to the billet rolling strategy.

[0116] In this embodiment of the invention, the device further includes: a second acquisition unit 16, a second judgment unit 17, and a third strategy determination and execution unit 18.

[0117] The second acquisition unit 16 is used to acquire the remainder of the quotient of the waiting time and the total rolling time of multiple steel pieces.

[0118] The second judgment unit 17 is used to determine whether the remainder is less than a preset remainder threshold, and whether the number of continuously rolled steel plates of the same specification in the current batch is greater than a preset batch steel plate number threshold.

[0119] The third strategy determination execution unit 18 is used to determine the continuous rolling strategy as a multi-piece steel rolling strategy if all are true, and to execute multi-piece steel rolling according to the continuous rolling strategy.

[0120] In this embodiment of the invention, the total rolling time of multiple steel blocks, the waiting time, the roller table information of the new rolling mill, and the slab information are obtained. The new rolling mill includes a bypass roller table. Based on the total rolling time of multiple steel blocks, the waiting time, the roller table information of the new rolling mill, and the slab information, the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy are generated. Based on the billet rolling rhythm time and the continuous rolling rhythm time, the multi-steel rolling strategy is determined, and the multi-steel rolling is controlled and executed according to the multi-steel rolling strategy. By setting the waiting roller table as a bypass roller table, the calculation models and process paths of the multi-steel billet rolling strategy and the multi-steel continuous rolling strategy are compared with the rolling parameters of typical products in the heavy plate mill. The multi-steel rolling strategy is determined and executed, reducing equipment complexity, production costs, and control capability requirements, thereby improving the production efficiency and equipment utilization rate of medium and heavy plates.

[0121] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer device, specifically, a computer device can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0122] This invention provides a computer device including a memory and a processor. The memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions. When the program instructions are loaded and executed by the processor, they implement the steps of the above-described embodiment of the strategy execution control method for rolling multiple steel blocks. For a detailed description, please refer to the embodiment of the above-described strategy execution control method for rolling multiple steel blocks.

[0123] The following is for reference. Figure 7 It shows a schematic diagram of the structure of a computer device 600 suitable for implementing the embodiments of this application.

[0124] like Figure 7 As shown, the computer device 600 includes a central processing unit (CPU) 601, which can perform various appropriate tasks and processes based on programs stored in read-only memory (ROM) 602 or programs loaded from storage section 608 into random access memory (RAM) 603. The RAM 603 also stores various programs and data required for the operation of the computer device 600. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0125] The following components are connected to I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal feedback (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to I / O interface 605 as needed. A removable medium 611, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 610 as needed so that computer programs read from it can be installed in storage section 608 as needed.

[0126] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program including program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611.

[0127] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0128] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0129] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0130] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0131] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0132] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0133] The acquisition, storage, use, and processing of data in this application all comply with the relevant provisions of national laws and regulations.

[0134] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, they do not mean that the applicant has used or necessarily used the solution.

[0135] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0136] This application can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0137] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0138] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A strategy execution control method for multi-piece steel rolling, characterized in that, The method includes: The total rolling time of multiple steel pieces, the waiting time, the information of the new rolling mill roller table, and the slab information are obtained. The new rolling mill includes a bypass roller table. Based on the total rolling time of the multiple steel blocks, the waiting time, the information of the new rolling mill roller table and the slab information, the rolling rhythm time of the billet grouping strategy and the continuous rolling rhythm time of the continuous rolling strategy are generated. Based on the billet rolling rhythm time and continuous rolling rhythm time, a multi-piece steel rolling strategy is determined, and the multi-piece steel rolling is controlled and executed according to the multi-piece steel rolling strategy. Specifically, it is determined whether the rolling rhythm time of the billet group is less than the continuous rolling rhythm time; If so, the billet rolling strategy is determined to be a multi-slab rolling strategy, and the multi-slab rolling is performed according to the billet rolling strategy. The billet rolling strategy is to perform the first stage rolling of the subsequent steel plates in the batch during the waiting temperature process after the first slab has completed the first stage rolling; after the temperature of the first steel plate meets the requirements of the second stage rolling process, the second stage rolling of the batch of steel plates is performed in sequence. If not, the continuous rolling strategy is determined to be a multi-slab rolling strategy, and multi-slab rolling is performed according to the continuous rolling strategy. The continuous rolling strategy is to perform the second-stage rolling of the previous steel plate during the waiting process after the current slab has completed the first stage rolling, and then perform the second-stage rolling of the current steel plate. It also includes: determining whether the number of continuously rolled steel plates of the same specification in the current batch is less than a preset batch steel plate number threshold, and whether the maximum number of steel plates in the rolling mill area under the billet rolling strategy is greater than a preset billet steel plate number threshold. If both are yes, the billet rolling strategy is determined as the multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy; It also includes: obtaining the remainder of the quotient of the waiting time and the total rolling time of the multiple steel pieces; Determine whether the remainder is less than a preset remainder threshold, and obtain whether the number of continuously rolled steel plates of the same specification in the current batch is greater than a preset batch steel plate quantity threshold. If both are true, the continuous rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the continuous rolling strategy.

2. The strategy execution control method for multi-piece steel rolling according to claim 1, characterized in that, The total rolling time for the multiple steel blocks includes the preparation time before rolling in the first stage, the rolling time in the first stage, the preparation time before rolling in the second stage, and the rolling time in the second stage. The process of generating the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy based on the total rolling time of the multiple steel blocks, the waiting time, the new rolling mill roller table information, and the slab information includes: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the waiting time, the information of the new rolling mill roller table and the slab information, the maximum number of steel plates in the rolling mill area under the billet rolling strategy is generated. Based on the maximum number of steel plates in the mill zone under the billet rolling strategy, the preparation time before the first stage rolling, the first stage rolling time, the preparation time before the second stage rolling, the second stage rolling time, and the waiting time, the billet rolling rhythm time is generated. Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, the waiting time, the information of the new rolling mill roller table and the slab information, the maximum number of steel plates in the rolling mill area under the continuous rolling strategy is generated. Based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the preparation time before the first stage of rolling, the rolling time before the first stage, the preparation time before the second stage of rolling, the rolling time before the second stage, the waiting time, and the number of steel plates of the same specification continuously rolled in the current batch, the continuous rolling rhythm time under the continuous rolling strategy is generated.

3. The strategy execution control method for multi-piece steel rolling according to claim 2, characterized in that, The new type of rolling mill roller information includes the bypass roller length and the bypass roller swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated; The step of generating the maximum number of steel plates in the rolling mill zone under the billet rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the waiting time, the new rolling mill roller table information, and the slab information includes: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, and the waiting time, the number of steel plates under the time-based billet rolling strategy is generated. Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety spacing, and waiting steel plate length, the number of steel plates under the space-based billet rolling strategy is generated. The number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy are compared, and the smaller one is determined as the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

4. The strategy execution control method for multi-piece steel rolling according to claim 2, characterized in that, The new type of rolling mill roller information includes the bypass roller length and the bypass roller swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated; The process of generating the maximum number of steel plates in the rolling mill zone under a continuous rolling strategy, based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, the waiting time, the new rolling mill roller table information, and the slab information, includes: Based on the preparation time before the first stage of rolling, the rolling time before the second stage of rolling, the rolling time before the second stage of rolling, and the waiting time, the number of steel plates under the time-based continuous rolling strategy is generated. Based on the bypass roller length, bypass roller swing safety distance, waiting slab safety distance, and waiting steel plate length, the number of steel plates under the space-based continuous rolling strategy is generated. The number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy are compared, and the smaller one is determined as the maximum number of steel plates in the mill zone under the continuous rolling strategy.

5. A strategy execution control device for multi-piece steel rolling, characterized in that, The device includes: The first acquisition unit is used to acquire the total rolling time of multiple steel pieces, the waiting time, the roller table information of the new rolling mill, and the slab information. The new rolling mill includes a bypass roller table. The strategy rhythm time generation unit is used to generate the billet rolling rhythm time under the billet rolling strategy and the continuous rolling rhythm time under the continuous rolling strategy based on the total rolling time of the multiple steel blocks, the waiting time, the new rolling mill roller table information and the slab information. The first strategy determination execution unit is used to determine the multi-piece steel rolling strategy based on the billet rolling rhythm time and the continuous rolling rhythm time, and to control the execution of multi-piece steel rolling according to the multi-piece steel rolling strategy. The first strategy determination execution unit is specifically used to determine whether the billet rolling rhythm time is less than the continuous rolling rhythm time; if so, the billet rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the billet rolling strategy; if not, the continuous rolling strategy is determined as a multi-piece steel rolling strategy, and multi-piece steel rolling is performed according to the continuous rolling strategy. Also includes: The first judgment unit is used to determine whether the number of continuously rolled steel plates of the same specification in the current batch is less than a preset batch steel plate quantity threshold, and whether the maximum number of steel plates in the rolling mill area under the billet rolling strategy is greater than the preset billet steel plate quantity threshold. The billet rolling strategy is to perform the first stage rolling of the subsequent steel plates in the batch during the waiting temperature process after the first billet completes the first stage rolling; after the temperature of the first steel plate meets the requirements of the second stage rolling process, the second stage rolling of the batch of steel plates is then performed sequentially. The second strategy determines the execution unit, which, if all are yes, determines the billet rolling strategy as a multi-piece steel rolling strategy and executes multi-piece steel rolling according to the billet rolling strategy. The continuous rolling strategy is to perform the second-stage rolling of the previous steel plate during the waiting process after the current billet has completed the first-stage rolling, and then perform the second-stage rolling of the current steel plate. Also includes: The second acquisition unit is used to acquire the remainder of the quotient of the waiting time and the total rolling time of the multiple steel pieces; The second judgment unit is used to determine whether the remainder is less than a preset remainder threshold, and to obtain whether the number of continuously rolled steel plates of the same specification in the current batch is greater than a preset batch steel plate number threshold. The third strategy determines the execution unit, which, if all are true, determines the continuous rolling strategy as a multi-piece steel rolling strategy and executes multi-piece steel rolling according to the continuous rolling strategy.

6. The strategy execution control device for multi-slab steel rolling according to claim 5, characterized in that, The total rolling time for the multiple steel blocks includes the preparation time before rolling in the first stage, the rolling time in the first stage, the preparation time before rolling in the second stage, and the rolling time in the second stage. The strategy rhythm time generation unit is specifically used to generate the maximum number of steel plates in the rolling mill area under the billet rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the waiting time, the new rolling mill roller table information, and the slab information; to generate the billet rolling rhythm time based on the maximum number of steel plates in the rolling mill area under the billet rolling strategy, the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time; and to generate the billet rolling rhythm time based on the first-stage pre-rolling preparation time, the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time. The maximum number of steel plates in the mill zone under the continuous rolling strategy is generated based on the preparation time, first-stage rolling time, second-stage rolling preparation time, second-stage rolling time, waiting time, new mill roller table information, and slab information. The continuous rolling rhythm time under the continuous rolling strategy is then generated based on the maximum number of steel plates in the mill zone under the continuous rolling strategy, the first-stage rolling preparation time, the first-stage rolling time, the second-stage rolling preparation time, the second-stage rolling time, the waiting time, and the number of steel plates of the same specification continuously rolled in the current batch.

7. The strategy execution control device for multi-slab steel rolling according to claim 6, characterized in that, The new type of rolling mill roller information includes the bypass roller length and the bypass roller swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated; The strategy rhythm time generation unit is specifically used to generate the number of steel plates under the time-based billet rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, and the waiting time; to generate the number of steel plates under the space-based billet rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based billet rolling strategy and the number of steel plates under the space-based billet rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the billet rolling strategy.

8. The strategy execution control device for multi-piece steel rolling according to claim 6, characterized in that, The new type of rolling mill roller information includes the bypass roller length and the bypass roller swing safety distance; the slab information includes the safety spacing of the slab waiting to be heated and the length of the steel plate waiting to be heated; The strategy rhythm time generation unit is specifically used to generate the number of steel plates under the time-based continuous rolling strategy based on the first-stage pre-rolling preparation time, the first-stage rolling time, the second-stage pre-rolling preparation time, the second-stage rolling time, and the waiting time; to generate the number of steel plates under the space-based continuous rolling strategy based on the bypass roller length, the bypass roller swing safety distance, the waiting slab safety distance, and the waiting steel plate length; and to compare the number of steel plates under the time-based continuous rolling strategy and the number of steel plates under the space-based continuous rolling strategy, and determine the smaller one as the maximum number of steel plates in the rolling mill area under the continuous rolling strategy.

9. A computer-readable medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the strategy execution control method for multi-piece steel rolling as described in any one of claims 1 to 4.

10. A computer device comprising a memory and a processor, the memory for storing information including program instructions, and the processor for controlling the execution of the program instructions, characterized in that, When the program instructions are loaded and executed by the processor, the strategy execution control method for rolling multiple steel blocks as described in any one of claims 1 to 4 is implemented.

11. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the strategy execution control method for rolling multiple steel blocks as described in any one of claims 1 to 4.

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