Steel surface defect positioning method, device, terminal and storage medium

Abstract

The present invention provides a method, device, terminal and storage medium for locating surface defects of steel, and relates to the technical field of defect location. The method comprises: scanning and modeling the target steel to obtain a turning model of the target steel; dividing the surface of the target steel into a plurality of turning points based on the turning model, and turning each turning point, collecting the steel surface structure of each turning point; performing quality inspection on the steel surface structure of each turning point, and dividing each turning point into qualified points and unqualified points; performing chemical composition inspection on the steel surface structure of each unqualified point, and obtaining the defect type and defect location of the target steel. The present invention can efficiently and accurately realize the location of surface defects of steel, and the turning is uniform, and no additional repair of the steel is required.

Description

Technical Field

[0001] The present invention relates to the technical field of defect location, and in particular to a method, device, terminal and storage medium for locating surface defects of steel. Background Art

[0002] Steel is widely used in many fields such as engineering, construction, electronics, transportation, and household goods. Affected by the production environment, mechanical defects, and raw material quality issues, metal materials will inevitably have some surface defects during the production process. In order to avoid problems during the use of materials and optimize the manufacturing process, the detection, positioning, and repair of steel surface defects are important links in industrial production.

[0003] At present, the positioning of steel surface defects mainly relies on manual experience for detection, which consumes a lot of human resources in the process and often leads to inaccurate positioning. When detection is carried out through mechanical and automated methods, a complex repair process is often required after detection. Summary of the invention

[0004] The embodiments of the present invention provide a method, device, terminal and storage medium for locating surface defects of steel materials, so as to solve the problem of low accuracy in detecting and locating surface defects of steel materials.

[0005] In a first aspect, an embodiment of the present invention provides a method for locating surface defects of steel, comprising:

[0006] Scan and model the target steel to obtain a turning model of the target steel;

[0007] Based on the turning model, the surface of the target steel is divided into multiple turning points, and each turning point is turned to collect the steel surface structure of each turning point;

[0008] Conduct quality inspection on the steel surface structure of each turning point and divide each turning point into qualified points and unqualified points;

[0009] The chemical composition of the steel surface structure at each unqualified point is tested to obtain the defect type and defect location of the target steel.

[0010] In a possible implementation, the steel surface structure of each turning point is quality inspected, and each turning point is divided into qualified points and unqualified points, including:

[0011] The quality of the steel surface structure of the first turning point is compared with the standard quality range of the steel surface structure corresponding to the turning parameters of the first turning point. If the quality of the steel surface structure of the first turning point is within the standard quality range, the first turning point is determined to be a qualified point, otherwise, the first turning point is determined to be an unqualified point; wherein the first turning point is any turning point.

[0012] In a possible implementation, the chemical composition of the steel surface structure at each unqualified point is tested to obtain the defect type and defect location of the target steel, including:

[0013] The steel surface structure of the first unqualified point is ball-milled into powder, and XRD and / or XPS tests are performed to obtain the structural composition of the steel surface structure of the first unqualified point, and the defect category of the first unqualified point is determined based on the structural composition to obtain the defect type and defect location of the target steel; wherein the first unqualified point is any unqualified point.

[0014] In a possible implementation, the chemical composition of the steel surface structure at each unqualified point is tested to obtain the defect type and defect location of the target steel, and further includes:

[0015] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is higher than the standard quality, the defect type of the first unqualified point is determined to be bulging;

[0016] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is lower than the standard quality, it is determined that the defect type of the first unqualified point is pores or cracks.

[0017] In a possible implementation, after obtaining the defect type and defect location of the target steel material, the method further includes:

[0018] For each unqualified point, turning, quality inspection and chemical composition inspection are repeated until the quality inspection and chemical composition inspection results of the steel surface structure of the unqualified point are qualified.

[0019] In a possible implementation, after the quality inspection results and chemical composition inspection results of the steel surface structures at all unqualified points are qualified, the method further includes:

[0020] Based on the total turning depth of the unqualified points with the most turning times, the target steel is turned as a whole.

[0021] In a possible implementation, scanning and modeling of the target steel material includes:

[0022] The target steel is scanned and modeled using a thermal laser device.

[0023] In a second aspect, an embodiment of the present invention provides a steel surface defect locating device, comprising:

[0024] A scanning modeling module is used to scan and model the target steel material to obtain a turning model of the target steel material;

[0025] The division and collection module divides the surface of the target steel into multiple turning points based on the turning model, and turns each turning point to collect the steel surface structure of each turning point;

[0026] The quality inspection module is used to inspect the steel surface structure of each turning point and divide each turning point into qualified points and unqualified points;

[0027] The component detection module is used to detect the chemical composition of the steel surface structure at each unqualified point to obtain the defect type and defect location of the target steel.

[0028] In a third aspect, an embodiment of the present invention provides a terminal, 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 steps of the method described in the first aspect or any possible implementation manner of the first aspect are implemented.

[0029] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect or any possible implementation of the first aspect are implemented.

[0030] The embodiment of the present invention provides a method, device, terminal and storage medium for locating surface defects of steel. The turning model is used to represent the turnable area of ​​the steel surface, and the turning points are divided. The steel surface structure of each turning point is turned and analyzed respectively, and the analysis results are associated with the turning points. It is possible to detect defects in various areas of the steel surface, thereby locating the defective parts, and identify the defect type of each turning point through quality inspection and chemical composition inspection. It is possible to efficiently and accurately locate the surface defects of steel, and the turning is uniform, without the need for additional repair of the steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a flow chart of the implementation of the method for locating steel surface defects provided by one embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of a turning model provided by an embodiment of the present invention;

[0034] Figure 3It is a structural schematic diagram of a steel surface defect locating device provided by an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0038] See also Figure 1 , which shows a flow chart of the implementation of the steel surface defect location method provided by an embodiment of the present invention, and is described in detail as follows:

[0039] Step 101, scanning and modeling the target steel material to obtain a turning model of the target steel material.

[0040] In this embodiment, the turning model can unfold the turning surface including the steel material into a rectangular coordinate system, so as to accurately describe the position of each part on the surface of the steel material through coordinates.

[0041] Step 102: divide the surface of the target steel material into a plurality of turning points based on the turning model, perform turning on each turning point, and collect the steel surface structure of each turning point.

[0042] In this embodiment, the surface of the target steel is divided into multiple turning points, and defect detection can be performed on the structure of each area of ​​the steel surface respectively, and the results are analyzed and classified to determine the defect conditions of each part of the steel surface and achieve accurate defect positioning.

[0043] The turned surface of the steel is unfolded into a turning model in a rectangular coordinate system. The entire turned surface is divided into a rectangular coordinate system. The entire steel surface is dotted according to the definition standard of defects, that is, the size of the point is set according to the type and accuracy of the defect to be detected. The shape of the turning point is usually circular, and the point diameter can be 1mm-3cm. Then, by measuring the entire steel surface, the total number of points is obtained to be n~m, so that multiple points cover the entire surface of the steel in the rectangular coordinate system, realizing comprehensive detection of the steel surface.

[0044] like Figure 2As shown, after scanning to obtain the turning model and dotting the entire steel surface, any part of the steel surface can be selected as the detection part according to actual needs, and accurate detection and positioning can be performed according to the point coordinates.

[0045] The turning depth can be set to 1mm~10mm. The surface structure of the steel is turned down by turning. During the process, the turning tool must be cleaned at each turning point to ensure the distinctiveness of the turning point, and then the turned steel surface structure is distinguished and collected.

[0046] Step 103, performing quality inspection on the steel surface structure of each turning point, and dividing each turning point into qualified points and unqualified points.

[0047] In this embodiment, when the turning parameters are known, the volume and density of the steel surface structure obtained by turning are also known. At this time, the quality of the steel surface structure when the steel material is free of defects can be determined, and the quality of the steel surface structure at each turning point can be used to preliminarily determine whether the steel surface structure of this part is defective. If the quality is normal, no subsequent detection is required. If the quality is abnormal, the defect type can be further determined by other methods.

[0048] Step 104, performing chemical composition testing on the steel surface structure of each unqualified point to obtain the defect type and defect location of the target steel.

[0049] In this embodiment, the chemical composition of the steel surface structure at each unqualified point can be analyzed through XRD and XPS tests to classify the defects, and the classified defects can be matched one by one with the points from which they were turned, so as to obtain accurate positioning of the steel surface defects.

[0050] The embodiment of the present invention represents the turnable area of ​​the steel surface through a turning model, and divides the turning points, respectively turns and analyzes the steel surface structure of each turning point, and associates the analysis results with the turning points. It can realize defect detection in various areas of the steel surface, thereby locating the defective parts, and identify the defect type of each turning point through quality inspection and chemical composition inspection. It can efficiently and accurately realize the location of steel surface defects, and the turning is uniform, without the need for additional repair of the steel.

[0051] In a possible implementation, the steel surface structure of each turning point is quality inspected, and each turning point is divided into qualified points and unqualified points, including:

[0052] The quality of the steel surface structure of the first turning point is compared with the standard quality range of the steel surface structure corresponding to the turning parameters of the first turning point. If the quality of the steel surface structure of the first turning point is within the standard quality range, the first turning point is determined to be a qualified point, otherwise, the first turning point is determined to be an unqualified point; wherein the first turning point is any turning point.

[0053] In this embodiment, the collected steel surface structure is first quality tested, and parameters are pre-specified for the quality of the steel structure with different turning parameters. For example, the quality of the turning structure with a depth of 1 cm and a point radius of 1 cm is calculated to obtain standard parameters, and then the different turned steel structures are classified according to the standard parameters, and the points that meet the standard quality are recorded as qualified points, and the other points are recorded as first-level unqualified points.

[0054] Taking into account the turning deviation, a certain quality deviation can be added to the standard quality parameters to form a standard quality range.

[0055] In a possible implementation, the chemical composition of the steel surface structure at each unqualified point is tested to obtain the defect type and defect location of the target steel, including:

[0056] The steel surface structure of the first unqualified point is ball-milled into powder, and XRD and / or XPS tests are performed to obtain the structural composition of the steel surface structure of the first unqualified point, and the defect category of the first unqualified point is determined based on the structural composition to obtain the defect type and defect location of the target steel; wherein the first unqualified point is any unqualified point.

[0057] In this embodiment, the steel surface structure at the unqualified point is ball-milled to be made into powder, and then further tested. The steel structure powder cut off is tested by XRD and XPS tests, and the test results are analyzed and then classified into oxidation defects, surface precipitation defects, other pores, cracks and other defects.

[0058] In a possible implementation, the chemical composition of the steel surface structure at each unqualified point is tested to obtain the defect type and defect location of the target steel, and further includes:

[0059] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is higher than the standard quality, the defect type of the first unqualified point is determined to be bulging;

[0060] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is lower than the standard quality, it is determined that the defect type of the first unqualified point is pores or cracks.

[0061] In this embodiment, the defect detection methods are divided into two methods: quality detection and chemical composition detection. The first step is quality detection. Because pores, cracks, etc. will cause partial quality loss, the quality measurement after precise turning can obtain defects of different qualities. If the quality is less, and the chemical detection finds that its composition is the same as the matrix structure, it can be defined as defects such as pores or cracks; if the quality is high, and the chemical detection finds that its composition is the same as the matrix structure, it can be defined as defects such as bulges.

[0062] In a possible implementation, after obtaining the defect type and defect location of the target steel material, the method further includes:

[0063] For each unqualified point, turning, quality inspection and chemical composition inspection are repeated until the quality inspection and chemical composition inspection results of the steel surface structure of the unqualified point are qualified.

[0064] In this embodiment, since the defect depth of the steel structure at each unqualified point is unknown, turning can be performed multiple times for detection, and the same turning depth can be used to remove the defective steel structure so that the remaining steel structure meets the qualified standards.

[0065] When further turning is performed for minor defects on the steel surface, the turning depth can also be adjusted appropriately. For example, when the deviation between the quality of the turning point and the standard quality is greater than the threshold, the turning depth is increased; when the deviation between the quality of the turning point and the standard quality is less than the threshold, the turning depth is reduced. In this way, the defective steel structure is removed by turning as little volume as possible, and the minor defects on the steel surface are accurately repaired, thereby improving the production efficiency of steel.

[0066] In a possible implementation, after the quality inspection results and chemical composition inspection results of the steel surface structures at all unqualified points are qualified, the method further includes:

[0067] Based on the total turning depth of the unqualified points with the most turning times, the target steel is turned as a whole.

[0068] In this embodiment, the defects on the steel surface are eliminated and the steel surface is made flat, so as to achieve the repair after the inspection. After the overall turning, the steps 101 to 104 can be repeated again to conduct a comprehensive secondary inspection on the surface of the steel material to check whether the defect elimination effect is achieved after turning.

[0069] In a possible implementation, scanning and modeling of the target steel material includes:

[0070] The target steel is scanned and modeled using a thermal laser device.

[0071] In this embodiment, a thermal laser device can be added to the turning probe, wherein the thermal laser device can play a heating role, can eliminate the false defects (air, water stains, dirt) on the steel surface, and through the laser ranging and laser positioning functions, can accurately locate the steel surface, accurately control the turning accuracy, and reduce the interference of turning errors and false defects on defect detection. If some non-volatile substances appear, they may be stolen goods defects, which can also be detected through quality inspection and chemical composition testing in the subsequent detection process.

[0072] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0073] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0074] Figure 3 The structural schematic diagram of the steel surface defect locating device provided by the embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0075] like Figure 3 As shown, the steel surface defect positioning device 3 includes:

[0076] A scanning modeling module 31 is used to scan and model the target steel material to obtain a turning model of the target steel material;

[0077] A division and collection module 32 divides the surface of the target steel material into a plurality of turning points based on the turning model, and performs turning on each turning point to collect the steel surface structure of each turning point;

[0078] The quality inspection module 33 is used to inspect the quality of the steel surface structure of each turning point and divide each turning point into qualified points and unqualified points;

[0079] The component detection module 34 is used to perform chemical component detection on the steel surface structure of each unqualified point to obtain the defect type and defect location of the target steel.

[0080] In a possible implementation, the quality detection module 33 is specifically used to:

[0081] The quality of the steel surface structure of the first turning point is compared with the standard quality range of the steel surface structure corresponding to the turning parameters of the first turning point. If the quality of the steel surface structure of the first turning point is within the standard quality range, the first turning point is determined to be a qualified point, otherwise, the first turning point is determined to be an unqualified point; wherein the first turning point is any turning point.

[0082] In a possible implementation, the component detection module 34 is specifically used to:

[0083] The steel surface structure of the first unqualified point is ball-milled into powder, and XRD and / or XPS tests are performed to obtain the structural composition of the steel surface structure of the first unqualified point, and the defect category of the first unqualified point is determined based on the structural composition to obtain the defect type and defect location of the target steel; wherein the first unqualified point is any unqualified point.

[0084] In a possible implementation, the component detection module 34 is further configured to:

[0085] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is higher than the standard quality, the defect type of the first unqualified point is determined to be bulging;

[0086] If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is lower than the standard quality, it is determined that the defect type of the first unqualified point is pores or cracks.

[0087] In a possible implementation, the division collection module 32 is further configured to:

[0088] After obtaining the defect type and defect location of the target steel, turning, quality inspection and chemical composition inspection are repeated for each unqualified point until the quality inspection and chemical composition inspection results of the steel surface structure of the unqualified point are qualified.

[0089] In a possible implementation, the division collection module 32 is further configured to:

[0090] After the quality inspection and chemical composition inspection results of the steel surface structure of all unqualified points are qualified, the target steel is turned as a whole based on the total turning depth of the unqualified points with the most turning times.

[0091] In a possible implementation, the scanning modeling module 31 is specifically used for:

[0092] The target steel is scanned and modeled using a thermal laser device.

[0093] The embodiment of the present invention represents the turnable area of ​​the steel surface through a turning model, and divides the turning points, respectively turns and analyzes the steel surface structure of each turning point, and associates the analysis results with the turning points. It can realize defect detection in various areas of the steel surface, thereby locating the defective parts, and identify the defect type of each turning point through quality inspection and chemical composition inspection. It can efficiently and accurately realize the location of steel surface defects, and the turning is uniform, without the need for additional repair of the steel.

[0094] Figure 4 is a schematic diagram of a terminal provided by an embodiment of the present invention. Figure 4 As shown, the terminal 4 of this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, the steps in the above-mentioned steel surface defect location method embodiments are implemented, for example Figure 1 Alternatively, when the processor 40 executes the computer program 42, the functions of each module / unit in the above-mentioned device embodiments are realized, for example Figure 3 Functionality of the modules / units 31 to 34 shown.

[0095] Exemplarily, the computer program 42 may be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 42 in the terminal 4. For example, the computer program 42 may be divided into Figure 3 Modules / units 31 to 34 are shown.

[0096] The terminal 4 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 4 It is only an example of terminal 4 and does not constitute a limitation on terminal 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal may also include input and output devices, network access devices, buses, etc.

[0097] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0098] The memory 41 may be an internal storage unit of the terminal 4, such as a hard disk or memory of the terminal 4. The memory 41 may also be an external storage device of the terminal 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal 4. The memory 41 is used to store the computer program and other programs and data required by the terminal. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0099] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0100] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0101] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0102] In the embodiments provided by the present invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0103] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0104] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0105] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various steel surface defect positioning method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practices in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practices, computer-readable media does not include electrical carrier signals and telecommunication signals.

[0106] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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 invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for locating surface defects of steel, characterized in that: include: Scanning and modeling the target steel material to obtain a turning model of the target steel material; Dividing the surface of the target steel material into a plurality of turning points based on the turning model, turning each turning point, and collecting the steel surface structure of each turning point; Conduct quality inspection on the steel surface structure of each turning point and divide each turning point into qualified points and unqualified points; Conduct chemical composition testing on the steel surface structure of each unqualified point to obtain the defect type and defect location of the target steel; The quality inspection of the steel surface structure of each turning point is carried out to divide each turning point into qualified points and unqualified points, including: The quality of the steel surface structure of the first turning point is compared with the standard quality range of the steel surface structure corresponding to the turning parameters of the first turning point. If the quality of the steel surface structure of the first turning point is within the standard quality range, the first turning point is determined to be a qualified point, otherwise, the first turning point is determined to be an unqualified point; wherein, the first turning point is any turning point.

2. The method for locating steel surface defects according to claim 1, characterized in that: The chemical composition detection of the steel surface structure at each unqualified point to obtain the defect type and defect location of the target steel includes: The steel surface structure of the first unqualified point is ball-milled into powder, and XRD and / or XPS tests are performed to obtain the structural composition of the steel surface structure of the first unqualified point, and the defect category of the first unqualified point is determined based on the structural composition to obtain the defect type and defect location of the target steel; wherein the first unqualified point is any unqualified point.

3. The method for locating steel surface defects according to claim 2, characterized in that: The chemical composition detection of the steel surface structure at each unqualified point to obtain the defect type and defect location of the target steel material also includes: If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is higher than the standard quality, it is determined that the defect type of the first unqualified point is bulging; If the structural composition of the steel surface structure at the first unqualified point is normal and the quality is lower than the standard quality, it is determined that the defect type of the first unqualified point is pores or cracks.

4. The method for locating steel surface defects according to claim 1, characterized in that: After obtaining the defect type and defect location of the target steel, the method further includes: For each unqualified point, turning, quality inspection and chemical composition inspection are repeated until the quality inspection and chemical composition inspection results of the steel surface structure of the unqualified point are qualified.

5. The method for locating steel surface defects according to claim 4, characterized in that: After the quality inspection and chemical composition inspection results of all unqualified points are qualified, it also includes: Based on the total turning depth of the unqualified points with the largest number of turning times, the target steel is turned as a whole.

6. The method for locating steel surface defects according to any one of claims 1 to 5, characterized in that: The scanning and modeling of the target steel material includes: The target steel is scanned and modeled using a thermal laser device.

7. A steel surface defect locating device, characterized in that: include: A scanning modeling module is used to scan and model the target steel material to obtain a turning model of the target steel material; A division and collection module divides the surface of the target steel material into a plurality of turning points based on the turning model, and performs turning on each turning point to collect the steel surface structure of each turning point; The quality inspection module is used to inspect the steel surface structure of each turning point and divide each turning point into qualified points and unqualified points; A component detection module is used to detect the chemical composition of the steel surface structure at each unqualified point to obtain the defect type and defect location of the target steel; The quality detection module is specifically used for: The quality of the steel surface structure of the first turning point is compared with the standard quality range of the steel surface structure corresponding to the turning parameters of the first turning point. If the quality of the steel surface structure of the first turning point is within the standard quality range, the first turning point is determined to be a qualified point, otherwise, the first turning point is determined to be an unqualified point; wherein, the first turning point is any turning point.

8. A terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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