Casting blank production method, device, equipment and medium

Abstract

The embodiment of the invention provides a casting blank production method, device and equipment and a medium, and the method comprises the steps that after molten steel is injected into a crystallizer, a casting blank produced by the crystallizer is pulled by a casting machine to pass through a secondary cooling area at a preset pulling speed scheme; in the process that the casting blank passes through the secondary cooling area, cooling equipment in the secondary cooling area is controlled to spray cooling water to the casting blank according to a preset water spraying scheme; and under the condition that the casting blank has defects, the actual water amount sprayed by the cooling equipment is controlled to be increased to the target water amount. Therefore, by regulating and controlling the synergistic effect of the secondary cooling system and the pulling speed in the continuous casting process, the initial solidification capacity of the blank shell on the surface of the casting blank is enhanced, the blank shell rapidly forms a uniform structure in the initial solidification stage, the calabash-shaped defect is effectively restrained, the yield of the casting blank is increased, the production stability is improved, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of metallurgical process technology, and in particular to a method, apparatus, equipment and medium for producing cast billets. Background Technology

[0002] In the continuous casting production of a special steel grade (such as one with high silicon and aluminum content), the billet often exhibits an abnormal phenomenon where the middle dimension is excessively wide while the head and tail dimensions are within acceptable limits, commonly known as the "gourd-shaped" defect.

[0003] Because this type of steel has a high alloy content and low high-temperature strength, dimensional deviations cannot be corrected by large width reduction during rolling, resulting in the billet being scrapped directly due to unqualified shape. Therefore, how to reduce the probability of "gourd-shaped" defects in finished products is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a billet production method, apparatus, equipment, and medium, which solves the technical problem that billets are prone to "gourd-shaped" defects in the prior art, and achieves the technical effect of reducing the probability of "gourd-shaped" defects in finished products.

[0005] In a first aspect, this application provides a method for producing a cast billet, comprising:

[0006] After the molten steel is injected into the crystallizer, the billet pulling machine is controlled to pull the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed.

[0007] During the process of the billet passing through the secondary cooling zone, the cooling equipment in the secondary cooling zone is controlled to spray cooling water onto the billet according to a preset water spraying scheme.

[0008] In the event of defects in the cast billet, the actual amount of water sprayed by the cooling equipment is increased to the target amount.

[0009] In some embodiments of this application, based on the foregoing scheme, during the process of controlling the billet puller to draw the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed, the method includes:

[0010] Control the start of the potter's wheel and increase the actual pulling speed to the first preset pulling speed with a first preset acceleration;

[0011] When the actual pulling speed is maintained at the first preset pulling speed for the first preset time, the potter is controlled to increase the actual pulling speed to the second preset pulling speed with the second preset acceleration.

[0012] When the actual drawing speed is maintained at the second preset drawing speed for the second preset time, the drawing machine is controlled to increase the actual drawing speed to the third preset drawing speed with a third preset acceleration.

[0013] In some embodiments of this application, based on the aforementioned scheme, the method for controlling the billet puller to draw the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed includes:

[0014] Control the potter's wheel to start at 2.40 m / s 2 The first preset acceleration will increase the actual pulling speed to 0.4 m / min;

[0015] With the actual drawing speed maintained at 0.4 m / min for 30 seconds, the potter's wheel was controlled at 0.48 m / s. 2 The second preset acceleration increases the actual pulling speed to 0.8 m / min;

[0016] With the actual drawing speed maintained at 0.8 m / min for 50 seconds, the potter's wheel was controlled at 0.60 m / s. 2 The third preset acceleration increases the actual pulling speed to 1.0 m / min.

[0017] In some embodiments of this application, based on the aforementioned scheme, controlling the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to a preset water spraying scheme includes:

[0018] The cooling equipment corresponding to each section in the secondary cooling zone is controlled to spray cooling water onto the billet according to its own preset water spraying scheme.

[0019] In some embodiments of this application, based on the aforementioned scheme, the secondary cooling zone near the crystallizer sequentially includes: a first zone, a second zone, a third zone, a fourth zone, a fifth zone, and a sixth zone. Controlling the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to a preset water spraying scheme includes:

[0020] The cooling equipment in the second zone is controlled to spray cooling water onto the billet at a rate of 650 L / min;

[0021] The cooling equipment in the third zone is controlled to spray cooling water onto the billet at a rate of 680 L / min;

[0022] Control the cooling equipment in the fourth zone to spray cooling water onto the billet at a rate of 550 L / min;

[0023] The cooling equipment in the fifth zone is controlled to spray cooling water onto the billet at a rate of 420 L / min;

[0024] Control the external cooling equipment of the sixth zone to spray cooling water onto the billet at a rate of 390 L / min;

[0025] The cooling equipment inside the sixth zone is controlled to spray cooling water onto the billet at a rate of 260 L / min.

[0026] In some embodiments of this application, based on the aforementioned scheme, the silicon content in the molten steel is ≥1.0%, and the aluminum content in the molten steel is ≥0.1%.

[0027] In some embodiments of this application, based on the aforementioned scheme, the defects in the cast billet include at least one of the following: the actual width of the cast billet exceeds the preset width and cracks appear on the surface of the cast billet.

[0028] Secondly, this application provides a billet production apparatus, comprising:

[0029] The speed control module is used to control the billet pulling machine to pull the billet produced by the crystallizer through the secondary cooling zone at a preset speed after the molten steel is injected into the crystallizer.

[0030] The cooling control module is used to control the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to a preset water spraying scheme during the process of the billet passing through the secondary cooling zone.

[0031] The water volume control module is used to control the actual water volume sprayed by the cooling equipment to increase to the target water volume in the event of defects in the billet.

[0032] Thirdly, this application provides an electronic device, comprising:

[0033] processor;

[0034] Memory used to store processor-executable instructions;

[0035] The processor is configured to execute a billet production method as provided in the first aspect.

[0036] Fourthly, this application provides a non-transitory computer-readable storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform a billet production method as provided in the first aspect.

[0037] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0038] This application provides a billet production method, including: after molten steel is injected into the crystallizer, controlling the billet puller to pull the billet produced in the crystallizer through a secondary cooling zone at a preset pulling speed; during the process of the billet passing through the secondary cooling zone, controlling the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to a preset water spraying scheme; and in the event of defects in the billet, controlling the actual amount of water sprayed by the cooling equipment to increase to a target amount. It can be seen that this application significantly improves the billet yield and production stability by regulating the secondary cooling regime and the synergistic effect of the pulling speed during continuous casting. The preset water spraying scheme optimizes the cooling intensity of the first section of the secondary cooling zone, enhances the initial solidification ability of the billet surface shell, suppresses bulging deformation caused by the static pressure of molten steel, and avoids the risk of surface cracks caused by uneven cooling. Furthermore, for the key node of pulling speed control in the initial casting stage, the preset pulling speed scheme optimizes the staged acceleration and holding time, reduces the negative impact of the "lifting effect" of the ingot head on the ductility of the billet, and enables the billet shell to quickly form a uniform structure in the early stage of solidification, avoiding local over-width. It achieves precise control of billet dimensions under complex working conditions, and is especially suitable for special steel grades with high silicon and aluminum content, effectively reducing scrap rate caused by billet mismatch and improving production efficiency and product quality. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram illustrating the production of a "gourd-shaped" defective billet in the conventional technology, provided for embodiments of this application.

[0041] Figure 2 A schematic flowchart of a billet production method provided in this application embodiment;

[0042] Figure 3 This application provides a schematic diagram of a billet production process.

[0043] Figure 4 A schematic diagram of the drawing speed curve of a potter's wheel provided in an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of a billet production apparatus provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0046] In the above image:

[0047] 1. Crystallizer; 2. Cast billet; 3. Secondary cooling zone. Detailed Implementation

[0048] This application provides a billet production method that solves the technical problem that billets in the prior art are prone to "gourd-shaped" defects.

[0049] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0050] This application provides a billet production method, including: after molten steel is injected into the crystallizer, controlling the billet puller to pull the billet produced in the crystallizer through a secondary cooling zone at a preset pulling speed; during the process of the billet passing through the secondary cooling zone, controlling the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to a preset water spraying scheme; and in the event of defects in the billet, controlling the actual amount of water sprayed by the cooling equipment to increase to a target amount. It can be seen that this application significantly improves the billet yield and production stability by regulating the secondary cooling regime and the synergistic effect of the pulling speed during continuous casting. The preset water spraying scheme optimizes the cooling intensity of the first section of the secondary cooling zone, enhances the initial solidification ability of the billet surface shell, suppresses bulging deformation caused by the static pressure of molten steel, and avoids the risk of surface cracks caused by uneven cooling. Furthermore, for the key node of pulling speed control in the initial casting stage, the preset pulling speed scheme optimizes the staged acceleration and holding time, reduces the negative impact of the "lifting effect" of the ingot head on the ductility of the billet, and enables the billet shell to quickly form a uniform structure in the early stage of solidification, avoiding local over-width. It achieves precise control of billet dimensions under complex working conditions, and is especially suitable for special steel grades with high silicon and aluminum content, effectively reducing scrap rate caused by billet mismatch and improving production efficiency and product quality.

[0051] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0052] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the continuous casting production of certain special steel grades (such as those with high silicon and aluminum content), an abnormal phenomenon often occurs in the cast billet: the central dimension is excessively wide, while the head and tail dimensions are within acceptable limits. This is commonly known as a "gourd-shaped" defect. For example... Figure 1 As shown, the defect manifests as the slab 2 near the head ( Figure 1The width of a section on the left side (as shown in the dashed box) significantly exceeds the process requirements, while the head and tail areas are of normal size, resembling a gourd shape, which severely restricts subsequent rolling processes. Because this type of steel has a high alloy content and low high-temperature strength, dimensional deviations cannot be corrected by large width reductions during rolling, resulting in billet 2 being directly scrapped due to its unqualified shape. This not only affects production planning and cost control but also exacerbates resource waste.

[0054] In existing technologies, the root cause of the gourd-shaped defect is closely related to the deficiencies in the design of the secondary cooling system and the speed control strategy. On the one hand, the cooling intensity of the traditional secondary cooling zone (especially the first 2-6 zones) is insufficient, resulting in slow secondary growth of the billet shell after the narrow face of billet 2 leaves the crystallizer 1, and the shell is thin and cannot effectively resist the static pressure of molten steel. Since the wide face of billet 2 is supported by rollers and is not prone to bulging, while the narrow face lacks a supporting structure, the thin billet shell bulges outward under the pressure of molten steel, forming a localized over-width area. On the other hand, there are defects in the speed control during the initial casting stage: the initial speed increase process is too slow, and the traction effect of the billet mill on billet 2 is insufficient. Instead, the "lifting effect" inhibits the extension of billet 2 along the casting direction, exacerbating the bulging of the narrow face. As the casting speed gradually stabilizes, the synergistic effect of the secondary cooling system and the casting speed thickens the billet shell and enhances its ductility. Subsequently, the width of billet 2 returns to normal, ultimately leaving an over-width area at the head of billet 2. Existing technologies fail to effectively coordinate the dynamic matching of secondary cooling intensity and casting speed. They are unable to quickly form a uniform shell during the initial casting stage, and it is also difficult to suppress narrow-face deformation through casting speed optimization, resulting in frequent gourd-shaped defects.

[0055] To address the aforementioned problems, embodiments of this application provide a method for producing cast billets. For example... Figure 2 The diagram shown is a flow chart of a billet production method provided in an embodiment of this application, including steps S1-S3.

[0056] Step S1: After the molten steel is injected into the crystallizer, the billet pulling machine is controlled to pull the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed.

[0057] Step S2: During the process of the billet passing through the secondary cooling zone, control the cooling equipment in the secondary cooling zone to spray cooling water onto the billet according to the preset water spraying plan.

[0058] Step S3: In the event of defects in the billet, control the actual amount of water sprayed by the cooling equipment to increase to the target amount.

[0059] Regarding step S1, after the molten steel is injected into the crystallizer, the billet pulling machine is controlled to pull the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed.

[0060] like Figure 3As shown, the billet 2 produced by the crystallizer 1 is pulled through the secondary cooling zone 3 by a billet puller (not shown in the figure).

[0061] In continuous casting equipment, the heat exchange process formed by the molten steel in the crystallizer 1 through the closed-loop cooling water of the crystallizer 1 is usually called primary cooling. The cooling process of continuing to spray water on the billet 2 after exiting the crystallizer 1 until the transverse section of the billet 2 is completely solidified is called secondary cooling. The area from exiting the crystallizer 1 to complete solidification of the billet 2 is called secondary cooling zone 3.

[0062] It should be noted that the silicon content in the molten steel is ≥1.0%, and the aluminum content is ≥0.1%. After the molten steel is injected into the crystallizer 1, it quickly forms a thin shell (cast billet 2) upon contact with the cooling wall of the crystallizer 1, and is then output from the outlet of the crystallizer 1. After the cast billet 2 leaves the crystallizer 1, it is pulled by the billet puller through the secondary cooling zone 3. The secondary cooling zone 3 accelerates the thickness of the thin shell growing on the outside of the cast billet 2 by spraying cooling water, allowing the cast billet 2 to further solidify.

[0063] Furthermore, in the process of controlling the billet puller to pull the billet produced by the crystallizer through the secondary cooling zone at a preset pulling speed, the method includes steps S11-S13.

[0064] Step S11: Control the potter to start and increase the actual pulling speed to the first preset pulling speed with the first preset acceleration;

[0065] Step S12: When the actual pulling speed is maintained at the first preset pulling speed for a duration of the first preset pulling speed, control the potter to increase the actual pulling speed to the second preset pulling speed with the second preset acceleration.

[0066] Step S13: When the actual pulling speed is maintained at the second preset pulling speed for a period of time that reaches the second preset pulling speed, control the potter to increase the actual pulling speed to the third preset pulling speed with a third preset acceleration.

[0067] For example, such as Figure 4 The diagram shown is a schematic of the drawing speed curve of a potter's wheel provided in an embodiment of this application. The horizontal axis represents time (in seconds), and the vertical axis represents drawing speed (in m / min). It can be seen that controlling the potter's wheel to start at 2.40 m / s... 2 The initial preset acceleration increases the actual drawing speed, reaching the initial preset drawing speed of 0.4 m / min after 10 seconds. After running at the initial preset drawing speed of 0.4 m / min for 40 seconds, the potter is controlled to move at 0.48 m / s. 2 The second preset acceleration increases the actual drawing speed, reaching the second preset drawing speed of 0.8 m / min at 90 s. After running at the second preset drawing speed of 0.8 m / min for 140 s, the potter is controlled to move at 0.60 m / s. 2The third preset acceleration increases the actual pulling speed, reaching the third preset pulling speed of 1.0 m / min at 160 s.

[0068] It is understood that the duration of maintaining a certain drawing speed (including the first preset drawing speed, the second preset drawing speed, and the third preset drawing speed) refers to the time period during which the speed at which the billet 2 is drawn out of the crystallizer 1 remains constant. For example, the first preset duration is 30 seconds, and the second preset duration is 50 seconds, i.e. Figure 3 The pulling speed curves corresponding to 10s-40s and 90s-140s.

[0069] Regarding step S2, during the process of the billet 2 passing through the secondary cooling zone 3, the cooling equipment in the secondary cooling zone 3 is controlled to spray cooling water onto the billet 2 according to a preset water spraying scheme.

[0070] The cooling equipment in the secondary cooling zone 3 includes multiple nozzles that spray cooling water evenly onto the surface of the billet 2 to increase the growth rate of the billet shell.

[0071] Furthermore, controlling the cooling equipment in the secondary cooling zone 3 to spray cooling water onto the billet 2 according to a preset water spraying scheme includes:

[0072] The cooling equipment corresponding to each section of the secondary cooling zone 3 is controlled to spray cooling water onto the billet 2 according to its own preset water spraying scheme.

[0073] For example, the secondary cooling zone 3, located near the crystallizer 1, sequentially includes: a first zone, a second zone, a third zone, a fourth zone, a fifth zone, and a sixth zone. For instance, Figure 3 The secondary cooling zone 3 is divided into six sections from right to left by dotted lines: the first section, the second section, the third section, the fourth section, the fifth section, and the sixth section. The section closest to the crystallizer 1 is the first section, and the section farthest from the crystallizer 1 is the sixth section.

[0074] Specifically, the cooling equipment in the second zone sprays cooling water onto the billet 2 at a rate of 650 L / min; the cooling equipment in the third zone sprays cooling water onto the billet 2 at a rate of 680 L / min; the cooling equipment in the fourth zone sprays cooling water onto the billet 2 at a rate of 550 L / min; the cooling equipment in the fifth zone sprays cooling water onto the billet 2 at a rate of 420 L / min; the cooling equipment outside the sixth zone sprays cooling water onto the billet 2 at a rate of 390 L / min; and the cooling equipment inside the sixth zone sprays cooling water onto the billet 2 at a rate of 260 L / min.

[0075] It should be noted that the interior of the sixth zone refers to the side of the sixth zone that is close to the center of the billet or the subsequent fan-shaped section. In this area, the billet has partially solidified and has a lower cooling requirement. Excessive cooling should be avoided to prevent surface cracks.

[0076] The outer part of the sixth zone refers to the side of the sixth zone closest to the front fan-shaped section or the equipment shell. The temperature of the billet in this area is relatively high, and cooling needs to be strengthened to accelerate the thickening of the billet shell and prevent the static pressure of the molten steel from causing bulging deformation.

[0077] Regarding step S3, in the event of a defect in billet 2, the actual amount of water sprayed by the cooling equipment is increased to the target amount.

[0078] The defects that occur in the billet 2 include at least one of the following: the actual width of the billet 2 exceeds the preset width and cracks appear on the surface of the billet 2.

[0079] Oversized defects (gourd-shaped defects) refer to the actual width of the billet exceeding the preset process requirements (preset width), which is usually manifested as a bulge in the middle (due to insufficient strength of the billet shell to resist the static pressure of molten steel).

[0080] Surface cracks refer to cracks (such as corner cracks or transverse cracks) that occur on the surface of the cast billet due to uneven cooling or abrupt temperature gradient changes.

[0081] Specifically, by using a laser width measuring instrument or an infrared thermometer to monitor in real time, if an overwidth or crack signal is detected, the actual water volume sprayed by the cooling equipment is increased to the target water volume (for example, the total water volume of the first 6 zones is increased from 2739L / min to 2950L / min, as shown in Table 1). This enhances cooling, accelerates the thickening of the billet shell, and suppresses bulging or cracking.

[0082] Table 1. Target Water Volume for the First Six Zones of the Secondary Cooling Zone

[0083] Secondary cooling area Target water volume (L / min) Original actual water volume (L / min) Second Division 650 570 Third Division 680 640 Fourth Division 550 520 Fifth Division 420 410 External of the Sixth Division 390 339 Internal of the Sixth Division 260 260 total 2950 2739

[0084] The following provides a specific embodiment to detail a billet production method provided in this application.

[0085] In the process of applying the billet production method provided in this application, a production line designed multiple sets of orthogonal experiments to obtain the optimal preset casting speed scheme and preset water spraying scheme. The test results are shown in Table 2.

[0086] Table 2. Schematic diagram of partial measurement results from multiple orthogonal experiments.

[0087]

[0088]

[0089] In Table 2, the variables are the increase in total water volume in the secondary cooling zone (0%, 2.5%, 5%, 7.5%, 10%, 15%), casting speed (0.4 / 0.8 m / min), and casting speed holding time (20-90 seconds). The observed indicators are the billet overwidth (in mm) and crack length (slight or greater than 5 mm). It can be seen that when the total water volume in the secondary cooling zone increases to 7.5%, the billet overwidth phenomenon is significantly reduced to below 27 mm, and there are no cracks; when the total water volume increases to more than 10%, slight cracks appear at the corners (corner cracks of the billet). Therefore, increasing the total water volume in the secondary cooling zone to 7.5% is the preset water spraying scheme.

[0090] With a 7.5% increase in the total water volume in the secondary cooling zone, it is evident that the billet overwidth is relatively small (below 27 mm) under two conditions: holding the casting speed at 0.4 m / min for 30 s and at 0.8 m / min for 60 s, and holding it at 0.4 m / min for 20 s and at 0.8 m / min for 50 s. Furthermore, considering that a short holding time at the low casting speed (0.4 m / min) would affect the stability of successful initial casting, the preset casting speed scheme was set to holding it at 0.4 m / min for 30 s and at 0.8 m / min for 50 s.

[0091] After implementing the above-mentioned preset casting speed and preset water spraying scheme, the maximum extra width measured in the middle of the billet is 17mm, which meets the requirements for the width of the rolled steel in the subsequent process.

[0092] In summary, this application provides a billet production method, including: after molten steel is injected into the crystallizer 1, controlling the billet puller to pull the billet 2 produced by the crystallizer 1 through the secondary cooling zone 3 at a preset pulling speed; during the process of the billet 2 passing through the secondary cooling zone 3, controlling the cooling equipment in the secondary cooling zone 3 to spray cooling water onto the billet 2 according to a preset water spraying scheme; and in the event of defects in the billet 2, controlling the actual water volume sprayed by the cooling equipment to increase to a target water volume. It can be seen that this application significantly improves the yield and production stability of the billet 2 by regulating the secondary cooling system and the synergistic effect of the pulling speed during the continuous casting process. The preset water spraying scheme optimizes the cooling intensity of the first section of the secondary cooling zone 3, enhances the initial solidification ability of the billet shell on the surface of the billet 2, suppresses bulging deformation caused by the static pressure of the molten steel, and avoids the risk of surface cracks caused by uneven cooling. Furthermore, for key aspects of casting speed control during the initial casting stage, the staged acceleration and holding time were optimized in the preset casting speed scheme to reduce the negative impact of the "lifting effect" of the ingot head on the ductility of the billet 2, enabling the billet shell to quickly form a uniform structure in the early stage of solidification and avoiding local over-width. Precise control of the billet 2 dimensions was achieved under complex working conditions, especially suitable for special steel grades with high silicon and aluminum content, effectively reducing the scrap rate caused by billet mismatch and improving production efficiency and product quality.

[0093] Based on the same inventive concept, embodiments of this application also provide, as follows: Figure 5 The billet production apparatus shown includes:

[0094] The speed control module 51 is used to control the billet pulling machine to pull the billet 2 produced by the crystallizer 1 through the secondary cooling zone 3 at a preset speed scheme after the molten steel is injected into the crystallizer 1.

[0095] The cooling control module 52 is used to control the cooling equipment of the secondary cooling zone 3 to spray cooling water onto the billet 2 according to a preset water spraying scheme during the process of the billet 2 passing through the secondary cooling zone 3.

[0096] The water volume control module 53 is used to control the actual water volume sprayed by the cooling equipment to increase to the target water volume in the event of a defect in the billet 2.

[0097] Furthermore, the device also includes an actual pulling speed adjustment module, used for:

[0098] Control the start of the potter's wheel and increase the actual pulling speed to the first preset pulling speed with a first preset acceleration;

[0099] When the actual pulling speed is maintained at the first preset pulling speed for the first preset time, the potter is controlled to increase the actual pulling speed to the second preset pulling speed with the second preset acceleration.

[0100] When the actual drawing speed is maintained at the second preset drawing speed for the second preset time, the drawing machine is controlled to increase the actual drawing speed to the third preset drawing speed with a third preset acceleration.

[0101] Furthermore, the device also includes an actual pulling speed adjustment module, used for:

[0102] Control the potter's wheel to start at 2.40 m / s 2 The first preset acceleration will increase the actual pulling speed to 0.4 m / min;

[0103] With the actual drawing speed maintained at 0.4 m / min for 30 seconds, the potter's wheel was controlled at 0.48 m / s. 2 The second preset acceleration increases the actual pulling speed to 0.8 m / min;

[0104] With the actual drawing speed maintained at 0.8 m / min for 50 seconds, the potter's wheel was controlled at 0.60 m / s. 2 The third preset acceleration increases the actual pulling speed to 1.0 m / min.

[0105] Furthermore, the device also includes a zoned cooling control module for:

[0106] The cooling equipment corresponding to each section of the secondary cooling zone 3 is controlled to spray cooling water onto the billet 2 according to its own preset water spraying scheme.

[0107] Furthermore, the device also includes a front six-zone cooling regulation module for:

[0108] The cooling equipment in the second zone is controlled to spray cooling water onto the billet 2 at a rate of 650 L / min;

[0109] The cooling equipment in the third zone is controlled to spray cooling water onto the billet 2 at a rate of 680 L / min;

[0110] Control the cooling equipment in the fourth zone to spray cooling water onto the billet 2 at a rate of 550 L / min;

[0111] The cooling equipment in the fifth zone is controlled to spray cooling water onto the billet 2 at a rate of 420 L / min;

[0112] Control the external cooling equipment of the sixth zone to spray cooling water onto the billet 2 at a rate of 390 L / min;

[0113] The cooling equipment inside the sixth section is controlled to spray cooling water onto the billet 2 at a rate of 260 L / min.

[0114] Based on the same inventive concept, embodiments of this application also provide, as follows: Figure 6 An electronic device shown includes:

[0115] Processor 61;

[0116] Memory 62 is used to store executable instructions of processor 61;

[0117] The processor 61 is configured to execute a billet production method as described above.

[0118] Based on the same inventive concept, embodiments of this application also provide a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by the processor 61 of an electronic device, enables the electronic device to perform a billet production method as described above.

[0119] Since the electronic device described in this embodiment is an electronic device used to implement the information processing method in the embodiments of this application, those skilled in the art can understand the specific implementation methods and various variations of the electronic device in this embodiment based on the information processing method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any electronic device used by those skilled in the art to implement the information processing method in the embodiments of this application falls within the scope of protection of this application.

[0120] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0125] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for producing a cast slab, characterized by, The method comprises the following steps: after the molten steel is injected into the crystallizer, a withdrawal machine is controlled to pull the cast blank produced by the crystallizer through a secondary cooling zone at a preset withdrawal speed scheme; during the process that the cast blank passes through the secondary cooling zone, a cooling device of the secondary cooling zone is controlled to spray cooling water on the cast blank at a preset water spraying scheme; in the case that the cast blank has a defect, the actual water amount sprayed by the cooling device is increased to a target water amount.

2. The billet production method as claimed in claim 1, characterized in that, During the process that the withdrawal machine is controlled to pull the cast blank produced by the crystallizer through the secondary cooling zone at the preset withdrawal speed scheme, the method comprises the following steps: the withdrawal machine is controlled to start and increase the actual withdrawal speed to a first preset withdrawal speed at a first preset acceleration; when the actual withdrawal speed is maintained at the first preset withdrawal speed for a first preset time length, the withdrawal machine is controlled to increase the actual withdrawal speed to a second preset withdrawal speed at a second preset acceleration; when the actual withdrawal speed is maintained at the second preset withdrawal speed for a second preset time length, the withdrawal machine is controlled to increase the actual withdrawal speed to a third preset withdrawal speed at a third preset acceleration.

3. The billet production method as recited in claim 1 or 2, characterized by, During the process that the withdrawal machine is controlled to pull the cast blank produced by the crystallizer through the secondary cooling zone at the preset withdrawal speed scheme, the method comprises the following steps: controlling the start of the stretching machine and increasing the actual stretching speed to 0.4 m / min with the first preset acceleration of 2.40 m / s 2 controlling the start of the stretching machine and increasing the actual stretching speed to 0.4 m / min with the first preset acceleration of 2.40 m / s under the condition that the actual drawing speed is maintained at 0.4 m / min for a time period of 30 s, the blank drawing machine is controlled to increase the actual drawing speed to 0.8 m / min by the second preset acceleration of 0.48 m / s 2 . under the condition that the actual drawing speed is maintained at 0.8 m / min for a time period of 50 s, the drawing machine is controlled to increase the actual drawing speed to 1.0 m / min with the third preset acceleration of 0.60 m / s 2 .

4. The casting method according to claim 1, wherein the control of the cooling device of the secondary cooling zone to spray the cooling water on the cast blank at the preset water spraying scheme comprises the following steps: the cooling device corresponding to each subzone in the secondary cooling zone is controlled to spray the cooling water on the cast blank at a respective preset water spraying scheme.

5. The casting method according to claim 1, wherein The side of the secondary cooling zone close to the crystallizer comprises, in sequence, a first subzone, a second subzone, a third subzone, a fourth subzone, a fifth subzone and a sixth subzone, and the control of the cooling device of the secondary cooling zone to spray the cooling water on the cast blank at the preset water spraying scheme comprises the following steps: the cooling device of the second subzone is controlled to spray the cooling water on the cast blank at 650 L / min; the cooling device of the third subzone is controlled to spray the cooling water on the cast blank at 680 L / min; the cooling device of the fourth subzone is controlled to spray the cooling water on the cast blank at 550 L / min; the cooling device of the fifth subzone is controlled to spray the cooling water on the cast blank at 420 L / min; the cooling device outside the sixth subzone is controlled to spray the cooling water on the cast blank at 390 L / min; the cooling device inside the sixth subzone is controlled to spray the cooling water on the cast blank at 260 L / min.

6. The casting method according to claim 1, wherein The content of silicon in the molten steel is greater than or equal to 1.0%, and the content of aluminum in the molten steel is greater than or equal to 0.1%.

7. The casting method according to claim 1, wherein The case that the cast blank has a defect comprises at least one of the following: the actual width of the cast blank exceeds a preset width and cracks are generated on the surface of the cast blank.

8. A slab production apparatus characterized by comprising: The method comprises the following steps: a withdrawal speed control module is configured to control a withdrawal machine to pull a cast blank produced by a crystallizer through a secondary cooling zone at a preset withdrawal speed scheme after the molten steel is injected into the crystallizer; a cooling control module is configured to control a cooling device of the secondary cooling zone to spray cooling water on the cast blank at a preset water spraying scheme during the process that the cast blank passes through the secondary cooling zone; and the cooling control module is configured to control the cooling device of the secondary cooling zone to spray the cooling water on the cast blank at the preset water spraying scheme. A water amount control module is configured to control the actual water amount sprayed by the cooling device to increase to a target water amount in the event of a defect in the cast slab.

9. An electronic device, comprising: Comprise: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute to implement a cast slab production method as claimed in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, comprising: When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is enabled to implement a cast slab production method as claimed in any one of claims 1 to 7.

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