Treatment method, device, medium and equipment for plate blanks with unqualified smelting components

Abstract

The invention provides a treatment method and device for slabs with unqualified smelting components, a medium and equipment. The method comprises the steps that treatment files of the slabs with the unqualified components of all steelmaking steel types are constructed based on historical production data; according to the current value of the exceeding component of the current plate blank, searching a corresponding middle tapping mark in the disposition file of the plate blank with the unqualified component; according to the intermediate tapping mark and the production constraint condition, the current plate blank is matched with the order hanging contract, and after matching succeeds, remaining materials are used for the current plate blank; in this way, the name of each standard-exceeding component, the range interval of the standard-exceeding component, the finished product brand number, the thickness specification, the rolling process parameters and the performance parameters can be presented in the processing file of the plate blank with the unqualified components; if a certain component of the current plate blank is not smelted, an intermediate tapping mark can be found in the disposition file of the plate blank with the unqualified component according to the current value of the component, and then rapid matching is carried out according to the intermediate tapping mark and production constraint conditions specified in a contract; although a certain component does not meet the design standard in a certain process step, the current plate blank can be reused as long as the performance parameters meet the requirements of the contract, and the remaining materials can be used as materials.

Description

Technical Field

[0001] The present invention relates to the technical field of hot rolling of steel, and particularly to a method, device, medium and equipment for processing unqualified slab in smelting. Background Art

[0002] In the field of steel manufacturing, slabs produced during the smelting process due to excessive components need to be re-listed by using surplus materials. If not disposed of in a timely manner, a large amount of surplus materials will be caused, resulting in heat loss of slabs, increase in spot goods, occupation of inventory funds, etc.

[0003] Currently, the processing of surplus materials with unqualified components is mainly manual operation, including multiple processes such as manual steel judgment, surplus material substitution, and quality block disposal. Moreover, for the disposal process of the same batch of slabs, the responsible persons for disposal are different, involving collaborative processing of multiple departments and specialties. A large amount of manual operation is based on personal experience, and there is a lack of process modification suggestions and performance prediction based on historical production data after the surplus material substitution. Technical personnel need to query and judge, resulting in low efficiency. For example, in the prior art such as the invention patent with the application number 202311213437.9, "A Method and Device for the Amount of Surplus Material Substitution of Hot Rolled Strip Steel", the efficiency of surplus material listing is improved through multi-mode matching, but it is only applicable to the specification matching scenario and cannot process slabs with excessive components. The invention patent with the application number 201210271763.0, "A Method for Rapid Automatic Grouping of Surplus Material Steel Plates", although optimizes the surplus material grouping scheme, still relies on manual experience for the disposal of slabs with excessive components.

[0004] Therefore, there is an urgent need for a method for processing unqualified slabs in smelting at present, so as to be able to process the slabs generated due to excessive components in a timely manner and improve the turnover efficiency of slabs with excessive components. Summary of the Invention

[0005] In view of the problems existing in the prior art, embodiments of the present invention provide a method, device, medium and equipment for processing unqualified slabs with smelting components, so as to solve or partially solve the technical problems in the prior art that unqualified slabs with smelting components cannot be processed in a timely manner, resulting in low turnover efficiency of slabs with excessive components and high labor costs.

[0006] In the first aspect of the present invention, a method for processing unqualified slabs with smelting components is provided, and the method includes:

[0007] Constructing a disposal file for unqualified slabs of each steel-making steel type based on historical production data; the disposal file for unqualified slabs includes the intermediate tapping mark, the original steel-making steel type, the name of the excessive component, the range interval of the excessive component, the brand number, the thickness specification, the rolling process parameters, and the performance parameters;

[0008] Find the corresponding intermediate tapping mark in the non - compliant slab disposal file according to the current value of the out - of - specification components of the current slab; the intermediate tapping mark has a corresponding relationship with the original steel - making grade, the name of the out - of - specification component, and the range interval of the out - of - specification component; the intermediate tapping mark has an associated relationship with the product brand and the thickness specification;

[0009] Match the current slab with each outstanding contract according to the found intermediate tapping mark and the production constraints included in each outstanding contract, and complete the surplus material appropriation of the current slab after successful matching.

[0010] In the above - mentioned solution, constructing the non - compliant slab disposal file based on historical production data includes:

[0011] For slabs with a single - element out - of - specification, obtain all the first out - of - specification data of a single element from the historical production data; classify the first out - of - specification data to obtain the first content classification interval, and match a corresponding thickness specification, rolling process parameters, performance parameters, and the first intermediate tapping mark for each first content classification interval to obtain the first non - compliant slab disposal file;

[0012] For slabs with multiple - element out - of - specification, obtain all the second out - of - specification data of each element from the historical production data, classify the second out - of - specification data to obtain the second content classification interval for each element; combine the second content classification intervals of each element to obtain a combined content classification interval; match a corresponding thickness specification, rolling process parameters, performance parameters, and the second intermediate tapping mark for the combined content classification interval to obtain the second non - compliant slab disposal file;

[0013] Determine the non - compliant slab disposal file according to the first non - compliant slab disposal file and the second non - compliant slab disposal file.

[0014] In the above - mentioned solution, classifying the first out - of - specification data to obtain the first content classification interval includes:

[0015] Arrange all the first out - of - specification data in ascending order to obtain the first data sequence;

[0016] Determine the first quantile and the second quantile of the first data sequence, and classify the first data sequence according to the standard lower limit value, standard upper limit value, the first quantile, and the second quantile of the single element to obtain the corresponding first content classification interval; the second quantile is greater than the first quantile.

[0017] In the above solution, the step of dividing the first data sequence into bins according to the standard lower limit value, standard upper limit value, the first quantile, and the second quantile of the single element to obtain the corresponding first content binning interval includes:

[0018] If it is determined that the first data sequence contains several data greater than the standard upper limit value of the single element and several data less than the standard lower limit value of the single element, then the several data greater than the standard upper limit value of the single element are determined as the first sub-data sequence, and the several data less than the standard lower limit value of the single element are determined as the second sub-data sequence;

[0019] Determine the first quantile and the second quantile of the first sub-data sequence, and divide the first sub-data sequence according to the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence, and the standard upper limit value to obtain the corresponding first content binning interval of the first sub-data sequence; the corresponding first content binning interval of the first sub-data sequence includes: [standard upper limit value, the first quantile of the first sub-data sequence] and (the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence];

[0020] Determine the first quantile and the second quantile of the second sub-data sequence, and divide the second sub-data sequence according to the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence, and the standard lower limit value to obtain the corresponding first content binning interval of the second sub-data sequence; the corresponding first content binning interval of the second sub-data sequence further includes: [the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence] and (the third quantile of the second sub-data sequence, standard lower limit value].

[0021] In the above solution, after constructing the composition non-conforming slab disposal file for each steelmaking steel grade based on historical production data, the method further includes:

[0022] For the performance parameters corresponding to the thickness specification and brand number matched by any intermediate tapping mark in the composition non-conforming slab disposal file, determine whether the performance parameters meet the production requirements of the brand number corresponding to the intermediate tapping mark. If they meet, set the automatic release flag corresponding to the intermediate tapping mark to the effective state.

[0023] In the above solution, the step of searching for the corresponding intermediate tapping mark in the composition non-conforming slab disposal file according to the current value of the excessive component of the current slab includes:

[0024] Determine the target range interval in the component non - conforming slab file where the current value of the over - standard component falls;

[0025] Based on the target range interval, search for the corresponding intermediate tapping mark in the component non - conforming slab disposal file.

[0026] In the above - mentioned solution, the matching of the current slab with the outstanding contract according to the found intermediate tapping mark and production constraint conditions includes:

[0027] Search for the corresponding target thickness specification and target brand number in the component non - conforming slab disposal file according to the intermediate tapping mark;

[0028] Taking the target thickness specification and target brand number as quality constraint conditions, search for outstanding contracts that can meet the quality constraint conditions among all outstanding contracts to obtain initial outstanding contracts;

[0029] Obtain the slab width range and weight range of the initial outstanding contracts. Taking the slab width range and weight range as production constraint conditions, search for contracts in the initial outstanding contracts that can be successfully matched with the width and weight of the current slab to obtain target outstanding contracts.

[0030] The present invention also provides a processing device for smelting component non - conforming slabs, and the device includes:

[0031] A construction unit for constructing a component non - conforming slab disposal file for each steel - making steel type based on historical production data; the component non - conforming slab disposal file includes an intermediate tapping mark, the original steel - making steel type, the name of the over - standard component, the range interval of the over - standard component, the brand number, the thickness specification, the rolling process parameters, and the performance parameters;

[0032] A search unit for searching for the corresponding intermediate tapping mark in the component non - conforming slab disposal file according to the current range interval where the over - standard component of the current slab is located; the intermediate tapping mark has a corresponding relationship with the original steel - making steel type, the name of the over - standard component, and the range interval of the over - standard component; the intermediate tapping mark has an associated relationship with the brand number and the thickness specification;

[0033] A matching unit for matching the current slab with each outstanding contract according to the found intermediate tapping mark and the production constraint conditions included in each outstanding contract, and completing the use of the remaining materials of the current slab after successful matching.

[0034] In the third aspect of the present invention, a computer - readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of the method described in any one of the first aspects are implemented.

[0035] In a fourth aspect of the present invention, there is provided a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the method according to any one of the first aspects are implemented.

[0036] The present invention provides a method, device, medium, and equipment for processing slabs with unqualified smelting components. The method includes: constructing a disposal file for slabs with unqualified components of each steelmaking grade based on historical production data; the disposal file for slabs with unqualified components includes intermediate tapping marks, original steelmaking grades, names of excessive components, range intervals of the excessive components, product grades, thickness specifications, rolling process parameters, and performance parameters; finding the corresponding intermediate tapping mark in the disposal file for slabs with unqualified components according to the current value of the excessive component of the current slab; there is a corresponding relationship between the intermediate tapping mark, the original steelmaking grade, the name of the excessive component, and the range interval of the excessive component; there is an associated relationship between the intermediate tapping mark, the product grade, and the thickness specification; matching the current slab with each pending contract according to the found intermediate tapping mark and the production constraint conditions included in each pending contract, and completing the use of the remaining materials of the current slab after successful matching; thus, after generating a disposal file for slabs with unqualified components of each steelmaking grade based on historical production data, the names of each excessive component, the range interval of the excessive component, the product grade, the thickness specification, the rolling process parameters, and the performance parameters can be fully presented in the disposal file for slabs with unqualified components; if a certain component of the current slab fails to meet the design standard during smelting, the intermediate tapping mark can be found in the disposal file for slabs with unqualified components according to the current value of the component, and then the contract that meets the production requirements can be quickly matched based on the corresponding relationship between the intermediate tapping mark, the product grade, the thickness specification, the rolling process parameters, and the performance parameters, as well as the production constraint conditions stipulated in the contract; although a certain component does not meet the design standard in a certain process step, as long as the final performance parameters meet the contract requirements, the current slab can be reused, so that slabs with unqualified smelting components can be quickly circulated, the use of remaining materials can be completed, the circulation efficiency of slabs with unqualified smelting components can be improved, and the smelting cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0038] Figure 1 shows a schematic flow chart of a method for processing slabs with unqualified smelting components according to an embodiment of the present invention;

[0039] Figure 2 Shows a schematic diagram of partial data of a composition non - compliant slab disposal document according to an embodiment of the present invention;

[0040] Figure 3 Shows a schematic structural diagram of a processing device for smelting composition non - compliant slabs according to an embodiment of the present invention. Detailed implementation manners

[0041] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0042] The present invention provides a method for processing smelting composition non - compliant slabs, as Figure 1 shown, the method includes the following steps:

[0043] S110, constructing a composition non - compliant slab disposal document for each steel - making steel grade based on historical production data; the composition non - compliant slab disposal document includes an intermediate tapping mark, the original steel - making steel grade, the name of the over - standard component, the range interval of the over - standard component, the product brand, the thickness specification, rolling process parameters, and performance parameters.

[0044] In the hot - rolling production line, slabs produced by steel - making smelting are rolled to obtain finished steel coils. Slabs with over - standard components (components exceeding the standard range) during the smelting process need to be re - listed as surplus materials, improving the utilization rate of smelting composition non - compliant slabs and reducing the smelting cost.

[0045] It can be understood that during the actual production process, some components in the steel - making stage may not meet the design standards, but the performance of the finished steel coils obtained through process adjustment in the subsequent steel - rolling stage may meet the requirements of some customers. Therefore, the present invention needs to construct a composition non - compliant slab disposal document for each steel - making steel grade based on the historical production data of the steel - making - rolling stage. The composition non - compliant slab disposal document records data with non - compliant components but performance parameters meeting customer requirements, so as to provide a reference basis for the current slab with non - compliant component smelting in production to act as surplus materials in the future.

[0046] Among them, the composition non - compliant slab disposal document includes an intermediate tapping mark, the original steel - making steel grade (steel - making steel grade), the name of the over - standard component, the range interval of the over - standard component, the product brand, the thickness specification, rolling process parameters, and performance parameters. The composition non - compliant slab disposal document can be as Figure 2 shown. From Figure 2It can be seen that the disposal document for slabs with unqualified components contains a lot of lines of data. Each line of data represents a matching rule, and each matching rule contains the corresponding relationship between the steelmaking grade, the exceeded standard component, the content grading interval, the intermediate tapping mark, the thickness, the product brand, the rolling process parameters, and the performance parameters. The intermediate tapping mark has a corresponding relationship with the original steelmaking grade, the name of the exceeded standard component, and the range interval of the exceeded standard component; the intermediate tapping mark also has an associated relationship (corresponding relationship) with the product brand and the thickness specification. The thickness specification and the product brand have a corresponding relationship with the rolling process parameters and the performance parameters.

[0047] Among them, the intermediate tapping mark can be unique or non-unique. When the intermediate tapping mark is unique, it can represent the uniqueness of the corresponding relationship between the original steelmaking grade, the name of the exceeded standard component, and the range interval of the exceeded standard component. And the intermediate tapping mark has a corresponding relationship with the product brand and the thickness specification. The thickness specification and the product brand have a corresponding relationship with the rolling process parameters and the performance parameters. Therefore, the intermediate tapping mark can act as an intermediate bridge to correspond the steelmaking grade, the exceeded standard component, the content grading interval with the product brand and the thickness specification, facilitating the subsequent rapid matching of slabs with unqualified components and the hanging orders, and improving the utilization efficiency of surplus materials. When the intermediate tapping mark is non-unique, it is necessary to combine the intermediate tapping mark, the name of the exceeded standard component, and the range interval of the exceeded standard component to represent the corresponding relationship between the product brand, the thickness specification, the rolling process parameters, and the performance parameters. In order to represent more clearly and concisely, the intermediate tapping mark in the present invention is unique.

[0048] The product brand refers to the product brand of the finished steel coil obtained after smelting and rolling a certain steelmaking grade.

[0049] The thickness specification refers to the thickness grading interval. For example, it is the thickness grading interval obtained after grading the slabs with unqualified smelting components in intervals of 2 mm.

[0050] The rolling process parameters refer to the process parameters used when producing the finished steel coil. In this embodiment, examples are: the finish rolling temperature and the average coiling temperature, but this does not form a limitation. The rolling process parameters also include other parameters, which will not be exemplified one by one here.

[0051] Taking Figure 2 the line data numbered 191 in the middle as an example, the rolling process parameters specifically include: the finish rolling temperature is 880 °C and the average coiling temperature is 640 °C.

[0052] The performance parameters refer to the steel coil performance presented by the product brand of the finished steel coil. In this embodiment, examples are: the lower yield strength and the tensile strength, but this does not form a limitation. Taking Figure 2Taking the row data with label 191 as an example, the properties of the finished steel coil are as follows: the lower yield strength is 351, the tensile strength is 472, and the elongation is 28.4.

[0053] In one embodiment, a disposal file for slabs with unqualified components is constructed based on historical production data, including:

[0054] For slabs with a single element exceeding the standard, all first over-standard data of a single element are obtained from historical production data; the first over-standard data are grouped to obtain the first content grouping intervals, and corresponding thickness specifications, rolling process parameters, property parameters, and first intermediate tapping marks are matched for each first content grouping interval to obtain a first disposal file for slabs with unqualified components;

[0055] For slabs with multiple elements exceeding the standard, all second over-standard data of each element are obtained from historical production data, and the second over-standard data are grouped to obtain the second content grouping intervals for each element; the second content grouping intervals are combined to obtain a combined content grouping interval; corresponding thickness specifications, rolling process parameters, property parameters, and second intermediate tapping marks are matched for the combined content grouping interval to obtain a second disposal file for slabs with unqualified components;

[0056] According to the first disposal file for slabs with unqualified components and the second disposal file for slabs with unqualified components, a disposal file for slabs with unqualified components is determined.

[0057] In one embodiment, grouping the first over-standard data to obtain the first content grouping intervals includes:

[0058] All the first over-standard data are arranged in ascending order to obtain a first data sequence;

[0059] The first quantile and the second quantile of the first data sequence are determined, and the first data sequence is grouped according to the standard lower limit value, the standard upper limit value, the first quantile, and the second quantile of a single element to obtain the corresponding first content grouping intervals; the second quantile is greater than the first quantile.

[0060] In one embodiment, grouping the first data sequence according to the standard lower limit value, the standard upper limit value, the first quantile, and the second quantile of a single element to obtain the corresponding first content grouping intervals includes:

[0061] If it is determined that the first data sequence contains several data greater than the standard upper limit value of a single element and several data less than the standard lower limit value of a single element, then the several data greater than the standard upper limit value of the single element are determined as a first sub-data sequence, and the several data less than the standard lower limit value of the single element are determined as a second sub-data sequence;

[0062] Determine the first quantile and the second quantile of the first sub-data sequence, and classify the first sub-data sequence according to the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence, i.e., the standard upper limit value, to obtain the first content classification interval corresponding to the first sub-data sequence; the first content classification interval corresponding to the first sub-data sequence includes: [standard upper limit value, the first quantile of the first sub-data sequence] and (the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence].

[0063] Determine the first quantile and the second quantile of the second sub-data sequence, and classify the second sub-data sequence according to the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence, and the standard lower limit value, to obtain the first content classification interval corresponding to the second sub-data sequence; the first content classification interval corresponding to the second sub-data sequence further includes: [the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence] and (the third quantile of the second sub-data sequence, the standard lower limit value].

[0064] Specifically, first, in the historical production performance database, the steelmaking steel grade, the exceeded component, and the actual content of the exceeded component can be screened out. There are multiple steelmaking steel grades, and the required data can be collected separately for each steelmaking steel grade.

[0065] In actual production, the exceeded smelting components may be single-element exceeded (such as only S exceeded), or may be multi-element exceeded (such as both carbon C and manganese MN (also written as Mn) are exceeded). Then the classification strategies for single-element exceeded slabs and multi-element exceeded slabs are as follows:

[0066] For any single-element exceeded slab, all the exceeded data (the first exceeded data) of this single element need to be collected from the historical production performance database. For example, when the exceeded component is S, the first exceeded data collected respectively include a1, a2,..., an.

[0067] Then all the first exceeded data can be sorted in ascending order to obtain the first data sequence. In practical applications, the first data sequence may include several data greater than the standard upper limit value of the single element and several data less than the standard lower limit value of the single element. For the several data greater than the standard upper limit value of the single element, they can be regarded as the first sub-data sequence, and the 75% quantile (the first quantile) and the 90% quantile (the second quantile) of the first sub-data sequence are respectively determined.

[0068] Then the first content classification interval corresponding to the first sub-data sequence includes: [standard upper limit value, the first quantile of the first sub-data sequence] and (the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence].

[0069] Similarly, for the second sub-data sequence, there are also two levels of first content classification intervals, including: [the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence] and (the third quantile of the second sub-data sequence, the standard lower limit value].

[0070] A unique first intermediate tapping mark is assigned to each content classification interval, excessive component, and steelmaking grade of the excessive component. Then, continue to classify according to the thickness range (each 2 mm as a thickness interval) and product brand, so as to obtain the corresponding relationship between the first intermediate tapping mark, product brand, and thickness classification interval.

[0071] For each first intermediate tapping mark, it is necessary to extract the rolling process parameters (coiling temperature, finishing rolling temperature, etc.) and performance parameters (yield strength, tensile strength, elongation, etc.) of all slabs that meet the corresponding content classification interval, product brand, and thickness classification interval from the historical performance database. Then, determine the average coiling temperature, average finishing rolling temperature, average yield strength, average tensile strength, and average elongation, and associate each first intermediate tapping mark with the average coiling temperature, average finishing rolling temperature, average yield strength, average tensile strength, and average elongation, so as to obtain the disposal document for the first component non-conforming slabs.

[0072] For the multi-element excessive slabs, it is necessary to determine the second excessive data of each excessive element, classify the second excessive data, and obtain the second content classification interval of each element. Among them, the specific implementation method of the second content classification interval is the same as that of the first content classification interval, so it will not be elaborated here.

[0073] After obtaining the second content classification interval of each excessive element, combine the second content classification intervals to obtain multiple combinations of content classification intervals. For any combination of content classification intervals, check whether there are slabs in the historical performance database that match this combination of content classification intervals. If there are, retain this combination of content classification intervals; if not, discard this combination of content classification intervals.

[0074] A unique second intermediate tapping mark is assigned to each retained combination of content classification intervals, excessive component, and steelmaking grade. Then, continue to classify according to the thickness range (each 2 mm as a thickness interval) and product brand, so as to obtain the corresponding relationship between the second intermediate tapping mark, product brand, and thickness classification interval.

[0075] For each second intermediate tapping mark, it is necessary to extract from the historical performance database the rolling process parameters (coiling temperature, finishing rolling temperature, etc.) and performance parameters (yield strength, tensile strength, elongation, etc.) of all slabs that meet the corresponding content grading interval combination, finished product grade, and thickness grading interval. Then, determine the average coiling temperature, average finishing rolling temperature, average yield strength, average tensile strength, and average elongation, and associate each second intermediate tapping mark with the average coiling temperature, average finishing rolling temperature, average yield strength, average tensile strength, and average elongation, so as to obtain the disposal document for slabs with unqualified second components.

[0076] Finally, determine the final disposal document for slabs with unqualified components based on the disposal document for slabs with unqualified first components and the disposal document for slabs with unqualified second components.

[0077] In this way, in the disposal document for slabs with unqualified components, the intermediate tapping mark not only has a corresponding relationship with the content grading interval, excessive component, and steelmaking steel type, but also has an associated relationship with the average coiling temperature, average finishing rolling temperature, average yield strength, average tensile strength, and average elongation.

[0078] In one implementation, after constructing the disposal document for slabs with unqualified components of each steelmaking steel type based on historical production data, the method further includes:

[0079] For the performance parameters corresponding to the thickness specification and finished product grade matched by any intermediate tapping mark in the disposal document for slabs with unqualified components, determine whether the performance parameters meet the production requirements of the finished product grade corresponding to the intermediate tapping mark. If they meet, set the automatic release flag corresponding to the intermediate tapping mark to the effective state.

[0080] In the present invention, after obtaining the disposal document for slabs with unqualified components, it is also necessary to conduct quality verification on the disposal document for slabs with unqualified components to improve the reference accuracy of the disposal document for slabs with unqualified components.

[0081] Specifically, during the actual generation process, each intermediate tapping mark may face multiple customers for the corresponding finished product brand. Although there is a general range of performance parameters for each finished product brand, different customers have different performance requirements. Some customers have relatively broad requirements for the range of performance parameters, while some customers have relatively strict requirements for the range of performance parameters. Therefore, for each intermediate tapping mark in the component non-conforming slab disposal document, it is also necessary to comprehensively judge whether the corresponding performance parameters meet the quality requirements of the customers based on the corresponding performance parameters. If the performance parameters of the finished product brand corresponding to a certain intermediate tapping mark cannot meet the quality requirements of all customers of this finished product brand, then the matching rule corresponding to the line where this intermediate tapping mark is located needs to be deleted from the component non-conforming slab disposal document. If the performance parameters of the finished product brand corresponding to a certain intermediate tapping mark can meet the quality requirements of at least one customer of this finished product brand, then the matching rule corresponding to the line where this intermediate tapping mark is located is retained.

[0082] For the matching rules corresponding to the lines where the remaining intermediate tapping marks are located, in order to improve the utilization efficiency of the remaining materials during the subsequent smelting of component non-conforming slabs, it is also necessary to continue to judge whether the thickness specifications matched by this intermediate tapping mark and the performance parameters corresponding to the finished product brand meet the production requirements of all customers of the finished product brand corresponding to the intermediate tapping mark. If they meet, the automatic release identifier corresponding to the intermediate tapping mark is set to the effective state ( Figure 2 it can be ticked in the automatic release column), if they do not meet, the automatic release identifier is set to the invalid state (no ticking).

[0083] For example, for Figure 2 the data in line 193, the MN component exceeds the standard, and the range of the exceeded component is [0.1172, 0.12721), the finished product brand is Q235B, and the thickness specification is [6, 8). Suppose the specified yield strength of Q235B with a thickness specification of [6, 8) mm is greater than 235, the tensile strength is greater than 400, and the elongation is greater than 18; since the yield strength corresponding to the data in line 193 is 326, the tensile strength is greater than 458, and the elongation is greater than 29.2, which meets the requirements, the matching rule for the line with the intermediate tapping mark AT4761D400B3 is retained.

[0084] Assume that the customers corresponding to Q235B with a thickness specification of [6,8) mm include Customer A and Customer B. Customer A specifies a yield strength greater than 250, a tensile strength greater than 420, and an elongation greater than 21; Customer B specifies a yield strength of (235,400), a tensile strength of (400,500), and an elongation of (20,33). It can be seen that the performance parameters corresponding to the middle tapping mark AT4761D400B3 can meet the quality requirements of both Customer A and Customer B. Therefore, the matching rule of the row where the middle tapping mark AT4761D400B3 is located can be retained, and the automatic release mark corresponding to AT4761D400B3 can be set to a valid state.

[0085] On the contrary, if the performance parameter corresponding to the intermediate steel-out mark AT4761D400B3 can only meet the requirements of customer A or can only meet the quality requirements of customer B, the automatic release mark corresponding to AT4761D400B3 is set to an invalid state.

[0086] In addition, in order to further provide comprehensive coverage of the disposal files of unqualified slabs with different components, after constructing the disposal files of unqualified slabs with different components for each steelmaking grade based on the historical production data, the method further includes:

[0087] Based on the preset cycle, the incremental learning algorithm is used to update the unqualified composition slab disposal file, and the new smelting composition unqualified data is updated to the unqualified composition slab disposal file.

[0088] In this way, each steel grade is treated in the same way. The unqualified slab disposal file records the intermediate steel marks of various steel grades, the names of the components that exceed the standard, the range of the components that exceed the standard (or the combination of the range of the components that exceed the standard), the brand number, the thickness specification, the rolling process parameters and the performance parameters. Since the unqualified slab disposal file contains a large number of possible combinations and fully covers various scenarios of excessive components, the current slab with unqualified smelting components can be processed in time without relying on manual operation. There is no need for manual operation in the subsequent residual material process (steel judgment, process modification blocking, unblocking) and other processes, and the current slab with unqualified smelting components can be processed fully automatically and efficiently.

[0089] S111, searching the corresponding intermediate steel-making mark in the unqualified component disposal file according to the current value of the excessive component of the current slab; the intermediate steel-making mark has a corresponding relationship with the original steel grade, the name of the excessive component, and the range of the excessive component; the intermediate steel-making mark has an associated relationship with the finished brand number and the thickness specification.

[0090] When smelting the current slab, if it is determined that a certain component of the current slab exceeds the standard, obtain the steelmaking grade to which the current slab belongs, the name of the component exceeding the standard, and the current value of the component exceeding the standard, and search for the corresponding intermediate tapping mark in the disposal document of the slabs with unqualified components of this steelmaking grade according to the current value of the component exceeding the standard.

[0091] In one implementation, searching for the corresponding intermediate tapping mark in the disposal document of the slabs with unqualified components according to the current value of the component exceeding the standard of the current slab includes:

[0092] Determine the target range interval in which the current value of the component exceeding the standard falls in the document of the slabs with unqualified components;

[0093] Based on the target range interval, search for the corresponding intermediate tapping mark in the disposal document of the slabs with unqualified components.

[0094] For example, assume that the steelmaking grade to which the current slab belongs is Q235(TI), the components exceeding the standard are C and MN, and the component C exceeding the standard falls between (0.1850, 0.1877], and the component MN exceeding the standard falls between (0.3500, 0.4368]. Refer to Figure 2 and the found intermediate tapping mark is AT4761D4001113, the corresponding brand is Q235B, and the thickness specification is [4, 6)mm.

[0095] S112, match the current slab with each outstanding order contract according to the found intermediate tapping mark and the production constraint conditions included in each outstanding order contract, and complete the remaining material acting of the current slab after successful matching.

[0096] After the intermediate tapping mark is determined, the current slab can be matched with each outstanding order contract according to the intermediate tapping mark and the production constraint conditions, and the remaining material acting of the current slab is completed after successful matching.

[0097] In one implementation, matching the current slab with each outstanding order contract according to the intermediate tapping mark and the production constraint conditions includes:

[0098] Search for the corresponding target thickness specification and target brand in the disposal document of the slabs with unqualified components according to the intermediate tapping mark:

[0099] Taking the target thickness specification and target brand as quality constraint conditions, search for the outstanding order contracts that can meet the quality constraint conditions among all outstanding order contracts to obtain the initial outstanding order contracts;

[0100] Obtain the slab width range and weight range of the initial order contract. Taking the slab width range and weight range as production constraint conditions, search for the contract in the initial order contract that can successfully match the width and weight of the current slab simultaneously to obtain the target order contract.

[0101] Specifically, after the intermediate tapping mark is determined, the intermediate tapping mark can be used as a quality constraint condition. Based on the intermediate tapping mark, the corresponding thickness specification and product brand can be found in the composition unqualified slab disposal document. That is to say, the target thickness specification and target product brand that the current slab can be rolled into can be found according to the intermediate tapping mark, which is equivalent to taking the target thickness specification and target product brand as quality constraint conditions.

[0102] Then, compare the target thickness specification and target product brand that can be rolled with the thickness specifications and product brands defined in all order contracts respectively, and find the order contract that simultaneously meets the target thickness specification and target product brand as the initial order contract.

[0103] Since the initial order contract also defines the slab width range and delivery single weight range, the slab width range and delivery single weight range can be used as production constraint conditions. Obtain the width and weight of the current slab from the material information of the current slab, and compare the defined slab width range and delivery single weight range in the initial order contract with the width and weight of the current slab respectively, and find the contract that simultaneously meets the width and weight of the current slab as the target order contract.

[0104] After the contract matching is completed, the surplus material of the current slab will enter quality block. If the automatic release flag corresponding to the found intermediate tapping mark is in an effective state, then the rolling process of the current slab can be automatically modified according to the rolling process parameters (coiling temperature, finishing rolling temperature, and others) corresponding to the found intermediate tapping mark. After the process modification is completed, the quality block is automatically lifted, and the current slab completes the surplus material substitution.

[0105] If the automatic release flag corresponding to the found intermediate tapping mark is in an invalid state, then the rolling process of the current slab can be automatically modified according to the rolling process parameters (coiling temperature, finishing rolling temperature, and others) corresponding to the found intermediate tapping mark. After the rolling process parameters are modified, it is also necessary to push release information (including performance parameters, standard range, order contract name, etc.) to the human-machine interaction interface for the staff to confirm. When the staff checks and confirms that there is no problem, a confirmation instruction will be triggered, and only then will the quality block of the current slab be lifted. When the staff checks and finds problems, no confirmation instruction will be sent, and the quality block of the current slab will not be lifted.

[0106] For example, continuing with the above example where the intermediate tapping mark is AT4761D400B3, if the performance parameters corresponding to AT4761D400B3 can only meet the requirements of customer A and cannot meet the quality requirements of customer B, and the order contract included in the pushed release information belongs to customer A, then the staff can confirm that there is no problem. If the order contract included in the pushed release information belongs to customer B, then the staff will confirm that there is a problem and will not lift the quality block on the current slab.

[0107] In this way, based on historical production data, through self-learning training of actual data, the present invention generates a component unqualified slab disposal file with self-iterative ability. Relying on the existing Manufacturing Execution System (MES), it forms a full-process slab disposal including automatic steel judgment, process modification, automatic release of quality block, and manual one-key disposal, realizing the full smoothness of the business flow of component unqualified slabs. It can reduce manual intervention by 90%, increase the efficiency of surplus material utilization by 40%, and greatly improve the hot charging efficiency of slabs at the steelmaking and hot rolling interfaces.

[0108] Based on the same inventive concept as in the foregoing embodiments, the present embodiment also provides a processing device for smelting component unqualified slabs, as Figure 3 described, the device includes:

[0109] A construction unit 31, configured to construct a component unqualified slab disposal file for each steelmaking steel grade based on historical production data; the component unqualified slab disposal file includes an intermediate tapping mark, the original steelmaking steel grade, the name of the exceeded component, the range interval of the exceeded component, the brand number, the thickness specification, the rolling process parameters, and the performance parameters;

[0110] A search unit 32, configured to search for the corresponding intermediate tapping mark in the component unqualified slab disposal file according to the current value of the exceeded component of the current slab; the intermediate tapping mark has a corresponding relationship with the original steelmaking steel grade, the name of the exceeded component, and the range interval of the exceeded component; the intermediate tapping mark has an associated relationship with the brand number and the thickness specification;

[0111] A matching unit 33, configured to match the current slab with each order contract according to the found intermediate tapping mark and the production constraint conditions included in each order contract, and complete the surplus material utilization of the current slab after successful matching.

[0112] Since the device introduced in the embodiments of the present invention is the device adopted for the method of treating the slab with unqualified smelting components in the embodiments of the present invention, based on the method introduced in the embodiments of the present invention, those skilled in the art can understand the specific structure and deformation of the device, so it will not be elaborated here. Any device adopted by the method in the embodiments of the present invention falls within the scope of protection of the present invention.

[0113] In practical applications, when using the method and device for treating the slab with unqualified smelting components provided in the above embodiments to treat the slab with unqualified components of the steel grade Q235B(TI) in steelmaking, the following is achieved:

[0114] Embodiment 1

[0115] During the actual production process, when both C and MN exceed the standard during the smelting of the current slab Q235B(Ti), and the excessive component of C falls within the range of (0.1850, 0.1877], and the excessive component of MN falls within the range of (0.3500, 0.4368], refer to Figure 2 and assign the found intermediate tapping mark as AT4761D4001114 ( Figure 2 the 213th line in), since the intermediate tapping mark is unique, it can be used as the unique identifier of this heat of steel.

[0116] The intermediate tapping mark AT4761D4001114 corresponds to Q235B with a thickness that can be rolled in the range of [4, 6) mm. The rolling process of the current slab can be modified to a finishing rolling temperature of 880°C and a coiling temperature of 620°C.

[0117] Combined with the surplus material acting as a model in the enterprise MES system, according to the found intermediate tapping mark and production constraint conditions, the current slab is automatically matched with the hanging order contract (Q235B futures contract), realizing the automatic acting of surplus material, and completing the automatic modification of the process after acting and the automatic release of the quality lock after modification.

[0118] Embodiment 2

[0119] Taking Q235B as an example again, during the actual production process, when the S element exceeds the standard during the smelting of the current slab Q235B(Ti), and the content of S falls within the range of [0.0021, 0.0047), refer to Figure 2 , Figure 2 the 191st, 195th, 198th, and 199th lines in, and assign the intermediate tapping marks AT4761D4000B1, AT4761D4000B5, AT4761D4000B8, and AT4761D4000B9, using the intermediate tapping mark as the identifier of this heat of steel.

[0120] The intermediate tapping marks AT4761D4000B1, AT4761D4000B5, AT4761D4000B8 and AT4761D4000B9 can be used to roll Q235B with a thickness of [4,6) mm, Q235B with a thickness of [6,8) mm, B375L with a thickness of [8,10) mm and Q235B with a thickness of [8,10) mm respectively, and correspond to different rolling processes and performance parameters.

[0121] Combined with the surplus material acting as a model in the enterprise MES system, the current slab is automatically matched with the pending contracts (Q235B futures contract and B375L futures contract) according to the found intermediate tapping marks and production constraints, so as to realize the automatic acting of surplus materials. Through the transformation of MES, the process after acting is automatically modified and the release of quality block after modification is completed.

[0122] Based on the same inventive concept, this embodiment provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, any step of the method described above is implemented.

[0123] Based on the same inventive concept, this embodiment provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the methods described above are implemented.

[0124] Through one or more embodiments of the present invention, the present invention has the following beneficial effects or advantages:

[0125] The present invention provides a method, device, medium and equipment for processing slabs with unqualified smelting components. The method includes:

[0126] Construct a disposal document for the composition non-conforming slabs of each steelmaking steel grade based on historical production data; the composition non-conforming slab disposal document includes the intermediate tapping mark, the original steelmaking steel grade, the name of the exceeded standard component, the range interval of the exceeded standard component, the brand number, the thickness specification, the rolling process parameters, and the performance parameters; find the corresponding intermediate tapping mark in the composition non-conforming slab disposal document according to the current value of the exceeded standard component of the current slab; there is a corresponding relationship between the intermediate tapping mark and the original steelmaking steel grade, the name of the exceeded standard component, and the range interval of the exceeded standard component; there is an associated relationship between the intermediate tapping mark and the brand number and the thickness specification; match the current slab with each pending contract according to the found intermediate tapping mark and the production constraint conditions included in each pending contract, and complete the surplus material acting of the current slab after successful matching; thus, after generating the composition non-conforming slab disposal document for each steelmaking steel grade according to historical production data, the composition non-conforming slab disposal document can comprehensively present the names of each exceeded standard component, the range interval of the exceeded standard component, the brand number, the thickness specification, the rolling process parameters, and the performance parameters; if a certain component of the current slab is smelted not meeting the design standard, the intermediate tapping mark can be found in the composition non-conforming slab disposal document according to the current value of this component, and then the contract meeting the production requirements can be quickly matched based on the corresponding relationship among the intermediate tapping mark, the brand number, the thickness specification, the rolling process parameters, and the performance parameters, as well as the production constraint conditions stipulated in the contract; in this way, although a certain component does not meet the design standard in a certain process step, as long as the final performance parameters meet the contract requirements, the current slab can be reused, so the slab with non-conforming smelting components can be quickly circulated, the surplus material acting can be completed, the circulation efficiency of the slab with non-conforming smelting components can be improved, and the smelting cost can be reduced.

[0127] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings based herein. The structure required to construct such a system will be apparent from the above description. Additionally, the present invention is not directed to any particular programming language. It should be understood that the content of the present invention described herein can be implemented using various programming languages, and the description of the specific language above is for the purpose of disclosing the best mode of the present invention.

[0128] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0129] Similarly, it should be understood that, for the purpose of streamlining the present disclosure and assisting in understanding one or more of the various inventive aspects, in the foregoing description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0130] Those skilled in the art will appreciate that the modules in the devices in the embodiments can be adaptively changed and disposed in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be adopted to combine all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0131] In addition, those skilled in the art will be able to understand that although some of the embodiments herein include certain features included in other embodiments but not other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0132] Each component embodiment of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components in the gateway, proxy server, and system according to the embodiments of the present invention. The present invention can also be implemented as a device or device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0133] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

[0134] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0135] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for treating a slab with unqualified smelting components, characterized in that, The method includes: Constructing a disposal document for composition non - compliant slabs of each steel - making grade based on historical production data; the disposal document for composition non - compliant slabs includes intermediate tapping marks, original steel - making grades, names of exceeded components, range intervals of the exceeded components, product grades, thickness specifications, rolling process parameters, and performance parameters; Searching for the corresponding intermediate tapping mark in the disposal document for composition non - compliant slabs according to the current value of the exceeded component of the current slab; there is a corresponding relationship between the intermediate tapping mark, the original steel - making grade, the name of the exceeded component, and the range interval of the exceeded component; there is an associated relationship between the intermediate tapping mark, the product grade, and the thickness specification; Matching the current slab with each outstanding order contract according to the found intermediate tapping mark and the production constraint conditions included in each outstanding order contract, and completing the use of the remaining materials of the current slab after successful matching.

2. The method according to claim 1, characterized in that, The constructing of the disposal document for composition non - compliant slabs based on historical production data includes: For single - element exceeded slabs, obtaining all first exceeded data of a single element from the historical production data; classifying the first exceeded data to obtain a first content classification interval, and matching corresponding thickness specifications, rolling process parameters, performance parameters, and first intermediate tapping marks for each first content classification interval to obtain a first disposal document for composition non - compliant slabs; For multi - element exceeded slabs, obtaining all second exceeded data of each element from the historical production data, classifying the second exceeded data to obtain a second content classification interval for each element; combining the second content classification intervals of each element to obtain a combined content classification interval; matching corresponding thickness specifications, rolling process parameters, performance parameters, and second intermediate tapping marks for the combined content classification interval to obtain a second disposal document for composition non - compliant slabs; Determining the disposal document for composition non - compliant slabs according to the first disposal document for composition non - compliant slabs and the second disposal document for composition non - compliant slabs.

3. The method according to claim 2, characterized in that, The classifying of the first exceeded data to obtain a first content classification interval includes: Arranging all the first exceeded data in ascending order to obtain a first data sequence; Determining the first quantile and the second quantile of the first data sequence, and classifying the first data sequence according to the standard lower limit value, standard upper limit value, the first quantile, and the second quantile of the single element to obtain the corresponding first content classification interval; the second quantile is greater than the first quantile.

4. The method according to claim 3, wherein The classifying of the first data sequence according to the standard lower limit value, standard upper limit value, the first quantile, and the second quantile of the single element to obtain the corresponding first content classification interval includes: If it is determined that there are several data greater than the standard upper limit value of the single element and several data less than the standard lower limit value of the single element in the first data sequence, then determining the several data greater than the standard upper limit value of the single element as a first sub - data sequence, and determining the several data less than the standard lower limit value of the single element as a second sub - data sequence; Determine the first quantile and the second quantile of the first sub-data sequence, and perform binning on the first sub-data sequence according to the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence, and the standard upper limit value to obtain the first content binning interval corresponding to the first sub-data sequence; the first content binning interval corresponding to the first sub-data sequence includes: [standard upper limit value, the first quantile of the first sub-data sequence] and (the first quantile of the first sub-data sequence, the second quantile of the first sub-data sequence]; Determine the first quantile and the second quantile of the second sub-data sequence, and perform binning on the second sub-data sequence according to the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence, and the standard lower limit value to obtain the first content binning interval corresponding to the second sub-data sequence; the first content binning interval corresponding to the second sub-data sequence further includes: [the first quantile of the second sub-data sequence, the second quantile of the second sub-data sequence] and (the third quantile of the second sub-data sequence, standard lower limit value].

5. The method according to claim 1, wherein After constructing the composition non-conforming slab disposal file for each steelmaking steel grade based on historical production data, the method further includes: For the performance parameters corresponding to the thickness specification and the product brand number matched by any intermediate tapping mark in the composition non-conforming slab disposal file, determine whether the performance parameters meet the production requirements of the product brand number corresponding to the intermediate tapping mark. If so, set the automatic release flag corresponding to the intermediate tapping mark to the effective state.

6. The method according to claim 1, wherein The step of finding the corresponding intermediate tapping mark in the composition non-conforming slab disposal file according to the current value of the out-of-specification component of the current slab includes: Determine the target range interval in which the current value of the out-of-specification component falls in the composition non-conforming slab file; Based on the target range interval, find the corresponding intermediate tapping mark in the composition non-conforming slab disposal file.

7. The method according to claim 1, wherein The step of matching the current slab with the pending contracts according to the found intermediate tapping mark and production constraint conditions includes: Find the corresponding target thickness specification and target product brand number in the composition non-conforming slab disposal file according to the intermediate tapping mark; Using the target thickness specification and target product brand number as quality constraint conditions, find the pending contracts that can meet the quality constraint conditions among all pending contracts to obtain the initial pending contracts; Obtain the slab width range and weight range of the initial pending contracts, and use the slab width range and weight range as production constraint conditions to find the contracts in the initial pending contracts that can be successfully matched with the width and weight of the current slab to obtain the target pending contracts.

8. A processing device for a slab with unqualified smelting components, characterized in that, The device includes: A building unit for building a disposal document for slabs with unqualified compositions of each steel grade for steelmaking based on historical production data; the disposal document for slabs with unqualified compositions includes an intermediate tapping mark, the original steel grade for steelmaking, the name of the over-standard composition, the range interval of the over-standard composition, the brand number, the thickness specification, rolling process parameters, and performance parameters; A searching unit for searching for a corresponding intermediate tapping mark in the disposal document for slabs with unqualified compositions according to the current value of the over-standard composition of the current slab; the intermediate tapping mark has a corresponding relationship with the original steel grade for steelmaking, the name of the over-standard composition, and the range interval of the over-standard composition; the intermediate tapping mark has an associated relationship with the brand number and the thickness specification; A matching unit for matching the current slab with each pending contract according to the found intermediate tapping mark and the production constraint conditions included in each pending contract, and completing the acting as surplus material of the current slab after successful matching.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method according to any one of claims 1-7.

10. A computer device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1-7.

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