Safe production method and device for casting blank

Abstract

The invention provides a safe production method and device for a casting blank, and relates to the technical field of metallurgy. The method comprises the steps that before online fine width adjustment operation of the crystallizer is carried out, the target thickness of liquid slag of the crystallizer is determined based on the amplitude of the crystallizer; the liquid slag is used for protecting an initial blank shell of a casting blank when the online fine width adjustment operation of the crystallizer is carried out; the target thickness is greater than the initial thickness of the liquid slag; after the online fine width adjustment operation of the crystallizer is carried out, the operation length of the starting point of the casting blank is determined based on the effective length of the crystallizer and a preset safety coefficient; and producing the casting blank based on the running length. According to the safe production method and device for the casting blank, the safety of the casting blank production process can be guaranteed, and the production quality of the casting blank is improved.

Description

Technical Field

[0001] The present application relates to the field of metallurgical technology, and in particular to a method and device for safely producing a casting. Background Art

[0002] During the continuous steel casting process, different types of steel are continuously cast. Due to the different shrinkage coefficients of steel types, there will be a slight difference between the actual width of the produced billet and the planned width. In view of the difference between the actual width and the planned width of the billet, the online fine-tuning of the width of the crystallizer can be performed. After the online fine-tuning of the width of the crystallizer, the corner seam of the crystallizer is prone to steel clamping. Among them, the corner seam is the gap between the narrow copper plate and the large copper plate of the crystallizer. If the corner seam clamping steel adheres to the primary billet shell, it will cause the casting machine to stick and alarm and shut down, and even steel leakage accidents will occur; if the corner seam clamping steel is not discovered in time, it will cause serious scratches on the corners of the billet, resulting in quality defects of the billet. In other words, the online fine-tuning of the width of the crystallizer is prone to corner seam clamping steel, which will cause accidents in the production process of the billet and quality defects of the billet. Summary of the invention

[0003] The present application provides a safe production method and device for casting billets, which are used to solve the problems of accidents in the production process of casting billets and quality defects of casting billets caused by online fine-tuning of the width of the crystallizer in the prior art, and to achieve safe and high-quality production of casting billets.

[0004] In a first aspect, the present application provides a method for safe production of a casting, comprising:

[0005] Before performing the online fine width adjustment operation of the crystallizer, the target thickness of the liquid slag of the crystallizer is determined based on the amplitude of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0006] After performing the online fine width adjustment operation of the crystallizer, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor;

[0007] Based on the run length, the cast strand is produced.

[0008] Optionally, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor includes:

[0009] Multiplying the effective length by the preset safety factor to obtain a first threshold;

[0010] Based on the first threshold, the run length is determined.

[0011] Optionally, the run length is greater than the first threshold.

[0012] Optionally, the preset safety factor is greater than 1.

[0013] Optionally, determining a target thickness of liquid slag in the crystallizer based on the amplitude of the crystallizer comprises:

[0014] taking twice the amplitude as a second threshold;

[0015] Based on the second threshold, the target thickness is determined.

[0016] Optionally, the target thickness is greater than the second threshold.

[0017] In a second aspect, the present application also provides a safe production device for casting, comprising:

[0018] A first determination module is used to determine the target thickness of the liquid slag of the crystallizer based on the amplitude of the crystallizer before performing the online fine width adjustment operation of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0019] A second determination module is used to determine the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor after performing the online fine width adjustment operation of the crystallizer;

[0020] A production module is used for producing the ingot based on the running length.

[0021] Optionally, the second determining module is specifically configured to:

[0022] Multiplying the effective length by the preset safety factor to obtain a first threshold;

[0023] Based on the first threshold, the run length is determined.

[0024] Optionally, the run length is greater than the first threshold.

[0025] Optionally, the preset safety factor is greater than 1.

[0026] Optionally, the first determining module is specifically configured to:

[0027] taking twice the amplitude as a second threshold;

[0028] Based on the second threshold, the target thickness is determined.

[0029] Optionally, the target thickness is greater than the second threshold.

[0030] In a third aspect, the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0031] In a fourth aspect, the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0032] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which implements the method described in the first aspect when executed by a processor.

[0033] The safe production method and device for casting provided in the present application can reduce the probability of primary billet shell rupture and the probability of steel clamping in the corner seam of the crystallizer by determining the target thickness of liquid slag and the running length of the starting point of the casting, thereby improving the quality of the casting, reducing the probability of production accidents, ensuring the safety of the production process of the casting, and meeting the long-term, efficient and high-quality production requirements of the continuous casting process under high-frequency width adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a schematic flow chart of a safe production method for casting provided in an embodiment of the present application;

[0036] Figure 2 It is one of the structural schematic diagrams of the crystallizer provided in the embodiments of the present application;

[0037] Figure 3 This is the second structural schematic diagram of the crystallizer provided in the embodiment of the present application;

[0038] Figure 4 It is a schematic structural diagram of a safe production device for casting blanks provided in an embodiment of the present application;

[0039] Figure 5 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Figure 1 Schematic diagram of the process of safe production of ingots provided in the embodiment of the present application. Figure 1 The embodiment of the present application provides a method for safe production of a casting, the execution subject of which may be an electronic device, for example, a controller. The following description is made by taking the execution subject of the method as an example. The method may include:

[0042] Step 110: before performing online fine-tuning of the width of the crystallizer, based on the amplitude of the crystallizer, determine the target thickness of the liquid slag of the crystallizer; the liquid slag is used to protect the primary billet shell of the ingot when performing online fine-tuning of the width of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0043] Step 120: After the online fine-tuning of the width of the crystallizer is performed, the running length of the starting point of the casting billet is determined based on the effective length of the crystallizer and a preset safety factor;

[0044] Step 130 : Produce a cast billet based on the run length.

[0045] Figure 2 This is one of the structural schematic diagrams of the crystallizer provided in the embodiments of the present application. Figure 2 As shown, during the production of ingots, when the online fine-width adjustment of the crystallizer is performed, the clamping surface (large surface) needs to be loosened to facilitate the widening surface (narrow surface) to move according to the width adjustment needs. Specifically, the clamping surface is opened by the disc spring pressure of the hydraulic system, and the opening speed is fast. At the moment of loosening the clamping surface, the primary ingot shell in the crystallizer suddenly loses support, and the static pressure of the molten steel will cause the primary ingot shell to break, causing the molten steel to overflow from the primary ingot shell. At this time, the clamping surface is in an open state, and there is an obvious corner gap between the large surface and the narrow surface. The suddenly overflowing molten steel can easily rush into the corner gap and solidify. Because the width adjustment amount of the online fine-width adjustment of the crystallizer is very small, generally not more than 15mm on one side, the running length of the starting point of the ingot after the width adjustment is also short, generally not more than 500mm, and then the clamping surface of the crystallizer is tightened, which causes the molten steel that overflows the primary ingot shell and rushes into the corner gap of the crystallizer and solidifies to be clamped in the corner gap of the crystallizer, forming the corner gap clamped steel of the crystallizer. Based on this, the present application proposes a new safe production method for casting billets.

[0046] In step 110, the molten steel forms a primary billet shell of the ingot after the crystallizer is cooled. Before performing the online fine-tuning width operation of the crystallizer, the controller can determine the target thickness of the liquid slag of the crystallizer based on the amplitude of the crystallizer. The liquid slag is used to protect the primary billet shell of the ingot when performing the online fine-tuning width operation of the crystallizer. The target thickness is greater than the initial thickness of the liquid slag. Figure 3 This is the second structural schematic diagram of the crystallizer provided in the embodiment of the present application. There is liquid slag inside the crystallizer, and the thickness of the liquid slag before adjustment is the initial thickness. After determining the target thickness of the liquid slag, the liquid slag of the crystallizer can be adjusted to the determined target thickness. Specifically, the liquid slag can be directly increased to the target thickness; or the solid slag of the crystallizer can be removed first, and then the liquid slag can be increased to the target thickness. When performing online fine-tuning of the width of the crystallizer, the sufficient influx of liquid slag protective slag at the meniscus of the crystallizer will form a buffer for the primary billet shell at the moment of loosening the clamping surface, thereby reducing the degree and probability of its breakage.

[0047] In step 120, after the mold is finely adjusted online, the controller can determine the running length of the starting point of the ingot based on the effective length of the ingot and the preset safety factor. Specifically, appropriately lengthening the running length of the starting point of the ingot can reduce the probability of steel being clamped in the corner seam.

[0048] In step 130 , the controller may control the production of the cast strand according to the running length of the starting point of the cast strand.

[0049] The safe production method for the ingot provided in the embodiment of the present application can reduce the probability of rupture of the primary ingot shell and the probability of steel being clamped in the corner seam of the crystallizer by determining the target thickness of the liquid slag and the running length of the starting point of the ingot, thereby improving the quality of the ingot, reducing the probability of production accidents, ensuring the safety of the ingot production process, and meeting the long-term, efficient and high-quality production requirements of the continuous casting process under high-frequency width adjustment.

[0050] In one embodiment, the running length of the starting point of the casting billet is determined based on the effective length of the crystallizer and a preset safety factor, including: multiplying the effective length by the preset safety factor to obtain a first threshold; and determining the running length based on the first threshold.

[0051] Further, in one embodiment, the run length is greater than a first threshold.

[0052] Further, in one embodiment, the preset safety factor is greater than 1.

[0053] Specifically, the preset safety factor may be 1.5. The controller may multiply the effective length of the crystallizer by the preset safety factor to obtain a first threshold value, and the running length of the starting point of the casting billet may be greater than the first threshold value.

[0054] The safe production method of the ingot provided in the embodiment of the present application obtains a first threshold value by multiplying the effective length by a preset safety factor, and makes the running length of the starting point of the ingot be greater than the first threshold value, thereby ensuring an appropriate running length, avoiding the defect that the running length of the starting point of the ingot is too short to exit the lower mouth of the crystallizer, reducing the occurrence of steel clamping in the corner seam of the crystallizer, ensuring the safety of the ingot production process, and improving the production quality of the ingot.

[0055] In one embodiment, the target thickness of the liquid slag in the crystallizer is determined based on the amplitude of the crystallizer, including: taking twice the amplitude as a second threshold; and determining the target thickness based on the second threshold.

[0056] Further, in one embodiment, the target thickness is greater than a second threshold.

[0057] The controller may determine the target thickness of the liquid slag in the crystallizer based on the amplitude of the crystallizer. For example, twice the amplitude may be used as the second threshold, and the target thickness is set to be greater than the second threshold.

[0058] The safe production method for castings provided in the embodiments of the present application determines the target thickness of the liquid slag in the crystallizer through the amplitude of the crystallizer, thereby forming a buffer for the primary billet shell at the moment of releasing the clamping surface of the crystallizer, reducing the degree and probability of cracking of the primary billet shell, reducing the probability of steel being clamped in the corner seam of the crystallizer, improving the quality of the castings, reducing the probability of production accidents, and ensuring the safety of the production process of the castings.

[0059] The safe production device for casting provided in the present application is described below. The safe production device for casting described below and the safe production method for casting described above can be referenced to each other.

[0060] Figure 4 Schematic diagram of the structure of the safe production device for casting blanks provided in the embodiment of the present application. Figure 4 The safe production device for casting provided in the embodiment of the present application may include:

[0061] The first determination module 410 is used to determine the target thickness of the liquid slag of the crystallizer based on the amplitude of the crystallizer before performing the online fine width adjustment operation of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0062] A second determination module 420 is used to determine the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor after performing the online fine width adjustment operation of the crystallizer;

[0063] The production module 430 is used to produce the casting strand based on the running length.

[0064] The safe production device for casting provided in the embodiment of the present application can reduce the probability of primary billet shell rupture and the probability of steel clamping in the corner seam of the crystallizer by determining the target thickness of liquid slag and the running length of the starting point of the casting, thereby improving the quality of the casting, reducing the probability of production accidents, ensuring the safety of the production process of the casting, and meeting the long-term, efficient and high-quality production requirements of the continuous casting process under high-frequency width adjustment.

[0065] In one embodiment, the second determining module is specifically configured to:

[0066] Multiplying the effective length by the preset safety factor to obtain a first threshold;

[0067] Based on the first threshold, the run length is determined.

[0068] In one embodiment, the run length is greater than the first threshold.

[0069] In one embodiment, the preset safety factor is greater than 1.

[0070] In one embodiment, the first determining module is specifically configured to:

[0071] taking twice the amplitude as a second threshold;

[0072] Based on the second threshold, the target thickness is determined.

[0073] In one embodiment, the target thickness is greater than the second threshold.

[0074] Specifically, the above-mentioned safe production device for casting provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the above-mentioned execution subject is the controller, and can achieve the same technical effect. The parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0075] Figure 5 Schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the safe production method of the casting, for example, including:

[0076] Before performing the online fine width adjustment operation of the crystallizer, the target thickness of the liquid slag of the crystallizer is determined based on the amplitude of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0077] After performing the online fine width adjustment operation of the crystallizer, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor;

[0078] Based on the run length, the cast strand is produced.

[0079] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0080] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the safe production method for casting provided by the above methods, for example, including:

[0081] Before performing the online fine width adjustment operation of the crystallizer, the target thickness of the liquid slag of the crystallizer is determined based on the amplitude of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0082] After performing the online fine width adjustment operation of the crystallizer, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor;

[0083] Based on the run length, the cast strand is produced.

[0084] On the other hand, the present application further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the steps of the safe production method of the casting provided by the above methods, for example, including:

[0085] Before performing the online fine width adjustment operation of the crystallizer, the target thickness of the liquid slag of the crystallizer is determined based on the amplitude of the crystallizer; the liquid slag is used to protect the primary billet shell of the cast billet when performing the online fine width adjustment operation of the crystallizer; the target thickness is greater than the initial thickness of the liquid slag;

[0086] After performing the online fine width adjustment operation of the crystallizer, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor;

[0087] Based on the run length, the cast strand is produced.

[0088] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0089] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0090] It should also be noted that the terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0091] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0092] "Determine B based on A" in the embodiments of the present application means that the factor A should be considered when determining B. It is not limited to "B can be determined based on A alone", but should also include: "Determine B based on A and C", "Determine B based on A, C and E", "Determine C based on A, and further determine B based on C", etc. In addition, it can also include taking A as a condition for determining B, for example, "When A meets the first condition, use the first method to determine B"; for another example, "When A meets the second condition, determine B", etc.; for another example, "When A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that takes A as a factor for determining B, for example, "When A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0093] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A safe production method for casting, characterized in that: include: Before performing an online fine-tuning operation of the crystallizer width, determining a target thickness of the liquid slag of the crystallizer based on the amplitude of the crystallizer; The liquid slag is used to protect the primary billet shell of the casting billet when the online fine width adjustment operation of the crystallizer is performed; The target thickness is greater than the initial thickness of the liquid slag; After performing the online fine width adjustment operation of the crystallizer, determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor; Based on the run length, the cast strand is produced.

2. The safe production method of the casting according to claim 1, characterized in that: The step of determining the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor comprises: Multiplying the effective length by the preset safety factor to obtain a first threshold; Based on the first threshold, the run length is determined.

3. The safe production method of the casting according to claim 2, characterized in that: The run length is greater than the first threshold.

4. The safe production method of the casting according to claim 2, characterized in that: The preset safety factor is greater than 1.

5. The safe production method of casting according to claim 1, characterized in that: The step of determining a target thickness of liquid slag in the crystallizer based on the amplitude of the crystallizer comprises: taking twice the amplitude as a second threshold; Based on the second threshold, the target thickness is determined.

6. The safe production method of casting according to claim 5, characterized in that: The target thickness is greater than the second threshold.

7. A safe production device for casting, characterized in that: include: A first determination module is used to determine a target thickness of liquid slag in the crystallizer based on the amplitude of the crystallizer before performing an online fine-tuning operation of the width of the crystallizer; The liquid slag is used to protect the primary billet shell of the casting billet when the online fine width adjustment operation of the crystallizer is performed; The target thickness is greater than the initial thickness of the liquid slag; A second determination module is used to determine the running length of the starting point of the casting billet based on the effective length of the crystallizer and a preset safety factor after performing the online fine width adjustment operation of the crystallizer; A production module is used for producing the ingot based on the running length.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the safe production method for casting billets as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the safe production method for casting billets as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the safe production method for casting billets as claimed in any one of claims 1 to 6 is implemented.

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