Production accident prevention method, device and equipment for cold rolling production line

Abstract

The invention discloses a production accident prevention method, device and equipment of a cold rolling production line, the cold rolling production line comprises a rolling mill, the method comprises the steps that before strip steel enters the rolling mill, physical information of defects of the strip steel is obtained, and the physical information of the defects comprises the edge distance, the defect width, the defect thickness and the defect length; the edge distance is the distance between the defect and the edge of the strip steel; and if the physical information of the defect represents that the possibility of the production accident of the cold rolling production line is greater than a preset possibility threshold, controlling the strip steel position of the defect to pass through the rolling mill to prevent the production accident of the cold rolling production line. The technical problem that the production stability of a cold rolling production line is low is solved.

Description

Technical Field

[0001] The present invention belongs to the field of cold rolling technology, and in particular relates to a method, device and equipment for preventing production accidents in a cold rolling production line. Background Art

[0002] Strip defects may or may not cause production accidents on the cold rolling line. For strip defects that could cause production accidents on the cold rolling line, effective control measures are needed to avoid production accidents.

[0003] Existing technology primarily relies on manual experience to determine whether strip defects will cause production accidents on the cold rolling line. This approach presents numerous problems. For example, strip defects that could cause production accidents are manually determined not to cause them, and no control measures are implemented. This can lead to production accidents, disrupting the normal production process of the cold rolling line and reducing production stability. Summary of the Invention

[0004] The embodiments of the present invention provide a method, device and equipment for preventing production accidents in a cold rolling production line, which solve the technical problem of low production stability of the cold rolling production line.

[0005] In a first aspect, an embodiment of the present invention provides a method for preventing production accidents in a cold rolling production line, wherein the cold rolling production line includes a rolling mill, and the method includes: obtaining physical information of defects of the strip before the strip enters the rolling mill, the physical information of the defect including edge distance, defect width, defect thickness and defect length, and the edge distance is the distance between the defect and the edge of the strip; if the physical information of the defect indicates that the possibility of a production accident in the cold rolling production line is greater than a preset possibility threshold, controlling the position of the strip where the defect is located to pass through the rolling mill to prevent production accidents in the cold rolling production line.

[0006] In combination with the first aspect of the present invention, in some embodiments, it also includes: if the edge distance is within a preset first distance range, the defect width is within a preset first width range, the defect thickness is within a preset first thickness range, or the defect length is within a preset first length range, then it is determined that the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than the preset possibility threshold.

[0007] In combination with the first aspect of the present invention, in some embodiments, the upper limit value of the first distance range is 50 mm, the lower limit value of the first width range is 50% of the strip width of the strip, the lower limit value of the first thickness range is 20% of the strip thickness of the strip, and the lower limit value of the first length range is 100 mm.

[0008] In combination with the first aspect of the present invention, in some embodiments, it also includes: if the edge distance is within a preset second distance range, the defect width is within a preset second width range, the defect thickness is within a preset second thickness range, and the defect length is within a preset second length range, based on the physical information of the defect, determining the risk score of the defect; the lower limit value of the second distance range is greater than the upper limit value of the first distance range, the lower limit value of the first width range is greater than the upper limit value of the second width range, the lower limit value of the first thickness range is greater than the upper limit value of the second thickness range, and the lower limit value of the first length range is greater than the upper limit value of the second length range; if the risk score of the defect is greater than the preset score threshold, it is determined that the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than the preset possibility threshold.

[0009] In combination with the first aspect of the present invention, in some embodiments, determining the risk score of the defect based on the physical information of the defect includes: obtaining a set of weights, the set of weights including an edge weight corresponding to the edge distance, a width weight corresponding to the defect width, a thickness weight corresponding to the defect thickness, and a length weight corresponding to the defect length; determining the risk score of the defect based on the edge distance, the defect width, the defect thickness, the defect length, and the set of weights; wherein, the smaller the edge distance, the greater the risk score; the greater the defect width, the greater the defect thickness, and the greater the defect length, the greater the risk score.

[0010] In combination with the first aspect of the present invention, in some embodiments, obtaining a set of weights includes: obtaining the morphological type of the defect; if the morphological type of the defect is planar, determining the set of weights according to a first principle, the first principle being that the edge weight is greater than the width weight, the thickness weight, and the length weight; if the morphological type of the defect is point-like or line-like, determining the set of weights according to a second principle, the second principle being that the deviation of any two weights in the set of weights is less than a preset deviation threshold.

[0011] In combination with the first aspect of the present invention, in some embodiments, the defects with point-like morphology include dents and edge cracks, the defects with surface-like morphology include scars, protective slag, roller marks, surface warping, holes, edge loss, indentations and iron inclusions, and the defects with linear morphology include line warping, bright bands, color difference and scratches.

[0012] In combination with the first aspect of the present invention, in some embodiments, the cold rolling production line also includes a pickling unit arranged in front of the rolling mill, and the pickling unit is provided with a surface inspection system; the obtaining of physical information of the defects of the strip includes: obtaining the physical information of the defects of the strip through the surface inspection system.

[0013] In a second aspect, an embodiment of the present invention provides a production accident prevention device for a cold rolling production line, wherein the cold rolling production line includes a rolling mill; the device includes: an information acquisition unit, for acquiring physical information of defects of the strip before the strip enters the rolling mill, the physical information of the defect including edge distance, defect width, defect thickness and defect length, the edge distance being the distance between the defect and the edge of the strip; a pass control unit, for controlling the strip position where the defect is located to pass through the rolling mill if the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than a preset possibility threshold, so as to prevent a production accident on the cold rolling production line.

[0014] In a third aspect, an embodiment of the present invention provides an electronic device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the methods described in the first aspect when executing the computer program.

[0015] The one or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0016] The embodiments of the present invention obtain physical information about defects in the steel strip before it enters the rolling mill. This physical information includes edge distance, defect width, defect thickness, and defect length, where the edge distance is the distance between the defect and the edge of the strip. If the physical information of the defect indicates that the probability of a production accident on the cold rolling line is greater than a preset probability threshold, the strip at the location of the defect is controlled to pass through the rolling mill to prevent the occurrence of production accidents on the cold rolling line. Because the edge distance, defect width, defect thickness, and defect length of the defect can reflect the severity of the defect, the probability of a production accident on the cold rolling line can be determined based on the physical information of the defect. If the probability of a production accident on the cold rolling line is greater than the preset probability threshold, the strip at the location of the defect is controlled to pass through the rolling mill to prevent the occurrence of production accidents on the cold rolling line. This method determines the probability of a production accident on the cold rolling line based on actual data, avoids determining the probability of a production accident on the cold rolling line based solely on manual experience, and thus avoids the frequent occurrence of production accidents, thereby improving the production stability of the cold rolling line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Flowchart of a method for preventing production accidents in a cold rolling production line according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of defect width in an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of defect thickness in an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of defect length in an embodiment of the present invention;

[0022] Figure 5 Schematic diagram of point-shaped, line-shaped and surface-shaped defects in an embodiment of the present invention;

[0023] Figure 6 This is a functional module diagram of a production accident prevention device for a cold rolling production line according to an embodiment of the present invention;

[0024] Figure 7 Schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] The embodiment of the present invention provides a method for preventing production accidents of a cold rolling production line, wherein the cold rolling production line includes a rolling mill, Figure 1 As shown, the method includes the following steps S101-S102:

[0028] S101: Before the strip enters the rolling mill, physical information of the strip defect is obtained. The physical information of the defect includes edge distance, defect width, defect thickness and defect length. The edge distance is the distance between the defect and the edge of the strip.

[0029] refer to Figure 2 、 Figure 3 as well as Figure 4 As shown, Figure 2 is a schematic diagram of defect width in an embodiment of the present invention, Figure 3 is a schematic diagram of defect thickness in an embodiment of the present invention, Figure 4 This is a schematic diagram of the defect length in an embodiment of the present invention. The defect width refers to the coverage distance of the defect in the width direction of the strip, the defect thickness refers to the coverage distance of the defect in the thickness direction of the strip, and the defect length refers to the coverage distance of the defect in the length direction of the strip.

[0030] In some embodiments, the cold rolling production line further includes a pickling unit arranged in front of the rolling mill, and the pickling unit is provided with a surface inspection system; obtaining physical information of defects in the strip may include: obtaining physical information of defects in the strip through the surface inspection system.

[0031] S102: If the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than a preset possibility threshold, the strip at the defect location is controlled to pass through the rolling mill to prevent the cold rolling production line from causing a production accident.

[0032] It should be noted that an empty rolling mill means that the rolling mill does not press down the roll gap when the strip is rolled, the strip does not undergo rolling deformation, and the strip is still moving on the rolling mill. In addition, when determining the possibility of a production accident on a cold rolling production line, it can be determined by only one factor among the edge distance, defect width, defect thickness, and defect length. However, there may be a situation where the factors are not fully considered, that is, there may be a single factor that leads to an error in judgment. Therefore, the embodiment of the present invention limits the combination of edge distance, defect width, defect thickness, and defect length to jointly determine the possibility of a production accident on a cold rolling production line, thereby avoiding the situation where the factors are not fully considered and improving the accuracy of the data on the possibility of a production accident on a cold rolling production line.

[0033] In some embodiments, the method for preventing production accidents in a cold rolling production line may further include: if the edge distance is within a preset first distance range, the defect width is within a preset first width range, the defect thickness is within a preset first thickness range, or the defect length is within a preset first length range, then it is determined that the physical information of the defect indicates that the possibility of a production accident in the cold rolling production line is greater than a preset possibility threshold.

[0034] In some embodiments, the upper limit value of the first distance range is 50 mm, the lower limit value of the first width range is 50% of the strip width of the strip, the lower limit value of the first thickness range is 20% of the strip thickness of the strip, and the lower limit value of the first length range is 100 mm.

[0035] It should be noted that production accidents can include strip breakage and damage to the rolling mill rolls. The edge distance being in the first distance range indicates that the defect is close to the edge of the strip. In this case, the edge of the strip is prone to cracking after rolling, which in turn easily leads to strip breakage. The defect width is in the first width range. In this case, the defect width is large, which easily leads to strip breakage after rolling. The defect thickness is in the first thickness range. When the strip is rolled, a depression or bulge is easily formed at the location of the defect, which in turn leads to damage to the rolling mill rolls. The defect length is in the first length range. Due to the excessive length, the same position of the roll will continue to suffer severe wear, which in turn leads to damage to the roll. It should be emphasized that if any of the conditions in the first distance range, the first width range, the first thickness range or the first length range are met, it can be determined that the possibility of a production accident on the cold rolling production line is greater than the preset possibility threshold. However, when none of the above ranges are met, it is necessary to combine the edge distance, defect width, defect thickness and defect length to comprehensively judge the possibility of a production accident on the cold rolling production line. The details are explained below:

[0036] In some embodiments, the method for preventing production accidents in a cold rolling production line may further include: if the edge distance is within a preset second distance range, the defect width is within a preset second width range, the defect thickness is within a preset second thickness range, and the defect length is within a preset second length range, determining the risk score of the defect based on the physical information of the defect; the lower limit value of the second distance range is greater than the upper limit value of the first distance range, the lower limit value of the first width range is greater than the upper limit value of the second width range, the lower limit value of the first thickness range is greater than the upper limit value of the second thickness range, and the lower limit value of the first length range is greater than the upper limit value of the second length range; if the risk score of the defect is greater than the preset score threshold, it is determined that the physical information of the defect indicates that the possibility of a production accident in the cold rolling production line is greater than the preset possibility threshold.

[0037] It should be noted that, with respect to the first distance range, the first width range, the first thickness range, and the first length range, if any one of the conditions is met, it can be determined that the probability of a production accident occurring on the cold rolling production line is greater than the preset probability threshold, and there is no need to calculate the risk score based on all the physical information of the defect, thus reducing the amount of computation. With respect to the second distance range, the second width range, the second thickness range, and the second length range, it is necessary to calculate the risk score based on all the physical information of the defect, which can ensure the accuracy of the risk score data and thus ensure the accuracy of the data on the probability of a production accident occurring on the cold rolling production line. Therefore, by distinguishing the determination methods for different ranges, the beneficial effect of both reducing the amount of computation and ensuring the accuracy of the data on the probability of a production accident occurring on the cold rolling production line is achieved.

[0038] In some embodiments, determining the risk score of a defect based on the physical information of the defect may include the following steps S1021 to S1022:

[0039] S1021: Obtain a set of weights, the set of weights including an edge weight corresponding to the edge distance, a width weight corresponding to the defect width, a thickness weight corresponding to the defect thickness, and a length weight corresponding to the defect length.

[0040] In some embodiments, obtaining a set of weights may include: obtaining the morphological type of the defect; if the morphological type of the defect is planar, determining a set of weights according to a first principle, the first principle being that the edge weight is greater than the width weight, thickness weight, and length weight; if the morphological type of the defect is point-like or line-like, determining a set of weights according to a second principle, the second principle being that the deviation of any two weights in a set of weights is less than a preset deviation threshold.

[0041] It should be noted that after analyzing historical production accidents, it was found that when the defect morphology is planar, if the edge distance of the historical defect is small, there is a high probability of a production accident. When the defect morphology is point or line, each factor has a similar impact on the production accident. In this case, the deviation between any two weights in a set of weights is limited to less than a preset deviation threshold. Therefore, the above first and second principles enable a set of weights to more accurately reflect the impact of different factors on production accidents, thereby improving the accuracy of the defect risk score data.

[0042] In some embodiments, defects with point-like morphology include dents and edge cracks, defects with surface-like morphology include scars, protective slag, roller marks, surface warping, holes, edge loss, indentations, and iron inclusions, and defects with line-like morphology include line warping, bright bands, color difference, and scratches.

[0043] refer to Figure 5 As shown, Figure 5Schematic diagram of point-shaped, line-shaped and surface-shaped defects in an embodiment of the present invention.

[0044] S1022: Determine a risk score of the defect based on the edge distance, defect width, defect thickness, defect length, and a set of weights; wherein, the smaller the edge distance, the greater the risk score; and the larger the defect width, the greater the defect thickness, and the greater the defect length, the greater the risk score.

[0045] In some embodiments, the risk score of the defect is determined based on the edge distance, defect width, defect thickness, defect length and a set of weights, which can be: taking the quotient of the edge distance and the strip width as the first value; taking the difference of one minus the first value as the second value; taking the product of the second value and the edge weight as the first sub-score; taking the quotient of the defect width and the strip width as the third value; taking the product of the third value and the width weight as the second sub-score; taking the quotient of the defect thickness and the strip thickness as the fourth value; taking the product of the fourth value and the thickness weight as the third sub-score; taking the quotient of the defect length and a preset reference length as the fifth value; wherein the defect length is less than the preset reference length; taking the product of the fifth value and the length weight as the fourth sub-score; and taking the sum of the first sub-score, the second sub-score, the third sub-score and the fourth sub-score as the risk score of the defect.

[0046] It should be noted that when the upper limit value of the first distance range is 50 mm, the second distance range can be further divided into multiple sub-ranges, and the multiple sub-ranges can include (50 mm, 60 mm], (60 mm, 70 mm], and a sub-range greater than 70 mm. When the lower limit value of the first width range is 50% of the strip width of the strip, the second width range can be further divided into multiple sub-ranges, and the multiple sub-ranges can include a sub-range of 40% to 50% of the strip width, a sub-range of 30% to 40% of the strip width, and a sub-range of less than 10% of the strip width. The second thickness range can be further divided into a sub-range of 30% of the strip thickness. When the lower limit of the first thickness range is 20% of the strip thickness, the second thickness range can be further divided into multiple sub-ranges, including a sub-range of 10% to 20% of the strip thickness and a sub-range of 0% to 10% of the strip thickness. When the lower limit of the first length range is 100 mm, the second length range can be further divided into multiple sub-ranges, including a sub-range of [75 mm, 100 mm], [50 mm, 75 mm], and a sub-range of less than 50 mm.

[0047] It should be noted that the cold rolling line can refer to a pickling mill, which can utilize a six-high, five-stand continuous rolling mill and produce a specific range of steel grades and specifications. Coils produced during an empty mill run are considered scrap. Defects can be caused by defects in the hot-rolled incoming material (raw material) or defects that arise during the cold rolling process. The main positions on the production line are loading, welding (uncoiling), pickling (straightening), and rolling mill. To improve the stability of cold rolling lines, it is crucial to manage defects encountered in the cold rolling mill during production. Rolling these defects can lead to accidents such as strip breakage. To improve line stability, effective defect management begins by identifying serious defects and then eliminating rolling (empty coils) during production. This can reduce the failure rate caused by quality defects during production, thereby helping to reduce production costs. During the handling process, operators failed to carefully consider the characteristics of the production line and the location of the defects, resulting in a high probability of misjudgment. It's also important to note that defects in pickling mills can arise from a variety of factors, including carryover from the hot-rolled material itself, as well as from equipment failures in the cold-rolling mill itself, improper operation, or inappropriate process parameter settings. The most serious defects are those that prevent rolling, resulting in high-risk failures such as strip breakage and roll damage. Therefore, most solutions involve leaving the coil unrolled.

[0048] It should be noted that the identification of defects can be done automatically through the surface inspection system or by operators. For operators, the inspection tools include a tape measure, and can also be combined with the pickling process surface inspection instrument (surface inspection system). The inspection locations can be three places: the pickling entrance loading inspection table, the pickling entrance discharge defect inspection table, and the pickling quality inspection defect inspection table. Generally, the defects that are determined to be empty coils are relatively serious and can affect the rolling process or cause batch quality problems and defects. The operators at the post before rolling should do a good job of identification. If the defects that require empty coils are not well classified, the identification time will be extended. The operators at the post can use tools for auxiliary identification. Since the surface of the raw material coil contains a thick iron oxide scale, it is difficult to observe surface defects at the loading post and the entrance post. The former mainly identifies edge defects. Surface defects are mainly identified by strip steel after pickling, which is implemented at the pickling post. However, defect identification requires verification with the actual strip steel. There is a deviation between the defect marking of the steel coil running in production and the parking operation of the inspection station. It often stops earlier than the marking. The on-site personnel then search and measure the actual defective objects, which prolongs the identification time.

[0049] It should be noted that, during the entire process of defect handling, the embodiment of the present invention balances various operational advantages according to the different defect locations, while also shortening the recognition time by 2-10 minutes per time, completely eliminating misjudgments, and achieving an annual economic benefit of 700,000 yuan.

[0050] The embodiments of the present invention obtain physical information about defects in the steel strip before it enters the rolling mill. This physical information includes edge distance, defect width, defect thickness, and defect length, where the edge distance is the distance between the defect and the edge of the strip. If the physical information of the defect indicates that the probability of a production accident on the cold rolling line is greater than a preset probability threshold, the strip at the location of the defect is controlled to pass through the rolling mill to prevent the occurrence of production accidents on the cold rolling line. Because the edge distance, defect width, defect thickness, and defect length of the defect can reflect the severity of the defect, the probability of a production accident on the cold rolling line can be determined based on the physical information of the defect. If the probability of a production accident on the cold rolling line is greater than the preset probability threshold, the strip at the location of the defect is controlled to pass through the rolling mill to prevent the occurrence of production accidents on the cold rolling line. This method determines the probability of a production accident on the cold rolling line based on actual data, avoids determining the probability of a production accident on the cold rolling line based solely on manual experience, and thus avoids the frequent occurrence of production accidents, thereby improving the production stability of the cold rolling line.

[0051] Based on the same invention concept, Figure 6 As shown, an embodiment of the present invention provides a production accident prevention device 10 for a cold rolling production line, and the cold rolling production line includes a rolling mill; the production accident prevention device 10 for the cold rolling production line includes: an information acquisition unit 110, used to obtain physical information of defects of the strip before the strip enters the rolling mill, the physical information of the defect includes edge distance, defect width, defect thickness and defect length, and the edge distance is the distance between the defect and the edge of the strip; an air-pass control unit 120, used to control the position of the strip where the defect is located to pass through the rolling mill if the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than a preset possibility threshold, so as to prevent production accidents on the cold rolling production line.

[0052] It is understood that the production accident prevention device 10 for the cold rolling line further includes: a first determination unit configured to determine that the physical information of the defect indicates that the probability of a production accident occurring in the cold rolling line is greater than a preset probability threshold if the edge distance is within a preset first distance range, the defect width is within a preset first width range, the defect thickness is within a preset first thickness range, or the defect length is within a preset first length range. The upper limit of the first distance range is 50 mm, the lower limit of the first width range is 50% of the strip width, the lower limit of the first thickness range is 20% of the strip thickness, and the lower limit of the first length range is 100 mm.

[0053] It can be understood that the production accident prevention device 10 of the cold rolling production line also includes: a second judgment unit; wherein the second judgment unit includes: a score determination subunit, which is used to determine the risk score of the defect based on the physical information of the defect if the edge distance is within the preset second distance range, the defect width is within the preset second width range, the defect thickness is within the preset second thickness range and the defect length is within the preset second length range; the lower limit value of the second distance range is greater than the upper limit value of the first distance range, the lower limit value of the first width range is greater than the upper limit value of the second width range, the lower limit value of the first thickness range is greater than the upper limit value of the second thickness range, and the lower limit value of the first length range is greater than the upper limit value of the second length range; a judgment subunit, which is used to determine that if the risk score of the defect is greater than a preset score threshold, then the physical information of the defect characterizes that the possibility of a production accident on the cold rolling production line is greater than a preset possibility threshold.

[0054] It can be understood that the score determination subunit includes: a weight acquisition module, used to obtain a set of weights, a set of weights including an edge weight corresponding to the edge distance, a width weight corresponding to the defect width, a thickness weight corresponding to the defect thickness, and a length weight corresponding to the defect length; a score determination module, used to determine the risk score of the defect based on the edge distance, defect width, defect thickness, defect length and a set of weights; wherein, the smaller the edge distance, the greater the risk score; the greater the defect width, the greater the defect thickness and the greater the defect length, the greater the risk score.

[0055] It can be understood that the weight acquisition module is specifically used to: obtain the morphological type of the defect; if the morphological type of the defect is planar, determine a set of weights according to the first principle, and the first principle is that the edge weight is greater than the width weight, thickness weight and length weight; if the morphological type of the defect is point-like or line-like, determine a set of weights according to the second principle, and the second principle is that the deviation of any two weights in a set of weights is less than a preset deviation threshold.

[0056] Among them, defects with point-like morphology include dents and edge cracks, defects with surface-like morphology include scars, protective slag, roller marks, surface warping, holes, edge loss, indentations and iron inclusions, and defects with line-like morphology include line warping, bright bands, color difference and scratches.

[0057] It is understandable that the cold rolling production line also includes a pickling unit arranged in front of the rolling mill, and the pickling unit is provided with a surface inspection system; the information acquisition unit 110 is specifically used to obtain physical information of defects of the strip through the surface inspection system.

[0058] It should be understood that more implementation details of the production accident prevention device 10 for the cold rolling production line in the embodiment of the present invention can be found in the production accident prevention method for the cold rolling production line described above, and will not be repeated here for the sake of brevity.

[0059] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, such as Figure 7 As shown, it includes a memory 704, a processor 702 and a computer program stored in the memory 704 and capable of running on the processor 702. The processor 702 executes the program to implement the steps described in any embodiment of the production accident prevention method for the cold rolling production line.

[0060] Among them, Figure 7 In the embodiment of the present invention, a bus architecture (represented by bus 700) is shown. Bus 700 may include any number of interconnected buses and bridges, and bus 700 links various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 705 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 may be the same component, namely a transceiver, which provides a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 may be used to store data used by processor 702 when performing operations.

[0061] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Furthermore, each functional unit may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0062] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, 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 units or modules, which can be electrical or other forms.

[0063] The units described as separate components may or may not be physically separate, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0064] If the integrated 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 technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0065] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A method for preventing production accidents in a cold rolling production line, characterized in that: The cold rolling production line includes a rolling mill, and the method includes: Before the steel strip enters the rolling mill, obtaining physical information of the defect of the steel strip, the physical information of the defect including edge distance, defect width, defect thickness and defect length, wherein the edge distance is the distance between the defect and the edge of the steel strip; If the physical information of the defect indicates that the possibility of a production accident occurring in the cold rolling production line is greater than a preset possibility threshold, the strip at the defect location is controlled to pass through the rolling mill to prevent a production accident from occurring in the cold rolling production line.

2. The method for preventing production accidents in a cold rolling production line according to claim 1, characterized in that: Also includes: If the edge distance is within the preset first distance range, the defect width is within the preset first width range, the defect thickness is within the preset first thickness range, or the defect length is within the preset first length range, it is determined that the physical information of the defect indicates that the possibility of a production accident occurring in the cold rolling production line is greater than the preset possibility threshold.

3. The method for preventing production accidents in a cold rolling production line according to claim 2, characterized in that: The upper limit value of the first distance range is 50 mm, the lower limit value of the first width range is 50% of the strip width of the strip, the lower limit value of the first thickness range is 20% of the strip thickness of the strip, and the lower limit value of the first length range is 100 mm.

4. The method for preventing production accidents in a cold rolling production line according to claim 2, characterized in that: Also includes: If the edge distance is within a preset second distance range, the defect width is within a preset second width range, the defect thickness is within a preset second thickness range, and the defect length is within a preset second length range, determining a risk score of the defect based on physical information of the defect; The lower limit of the second distance range is greater than the upper limit of the first distance range, the lower limit of the first width range is greater than the upper limit of the second width range, the lower limit of the first thickness range is greater than the upper limit of the second thickness range, and the lower limit of the first length range is greater than the upper limit of the second length range; If the risk score of the defect is greater than a preset score threshold, it is determined that the physical information of the defect indicates that the possibility of a production accident occurring in the cold rolling production line is greater than the preset possibility threshold.

5. The method for preventing production accidents in a cold rolling production line according to claim 4, characterized in that: The determining, based on the physical information of the defect, a risk score of the defect includes: Obtaining a set of weights, the set of weights comprising an edge weight corresponding to the edge distance, a width weight corresponding to the defect width, a thickness weight corresponding to the defect thickness, and a length weight corresponding to the defect length; A risk score of the defect is determined based on the edge distance, the defect width, the defect thickness, the defect length, and the set of weights; wherein, the smaller the edge distance, the greater the risk score; and the larger the defect width, the greater the defect thickness, and the greater the defect length, the greater the risk score.

6. The method for preventing production accidents in a cold rolling production line according to claim 5, characterized in that: The obtaining of a set of weights includes: Obtaining the morphological type of the defect; If the defect is planar, the set of weights is determined according to a first principle, wherein the first principle is that the edge weight is greater than the width weight, the thickness weight, and the length weight; If the morphological type of the defect is point-shaped or line-shaped, the set of weights is determined according to a second principle, where the deviation of any two weights in the set of weights is less than a preset deviation threshold.

7. The method for preventing production accidents in a cold rolling production line according to claim 6, characterized in that: The defects with point-like morphology include dents and edge cracks, the defects with surface-like morphology include scars, protective slag, roller marks, surface warping, holes, edge loss, indentations and iron inclusions, and the defects with linear morphology include line warping, bright bands, color difference and scratches.

8. The method for preventing production accidents in a cold rolling production line according to any one of claims 1 to 7, characterized in that: The cold rolling production line further includes a pickling unit arranged in front of the rolling mill, and the pickling unit is provided with a surface inspection system; the obtaining of physical information of defects of the steel strip includes: The physical information of the defects of the steel strip is obtained through the surface inspection system.

9. A production accident prevention device for a cold rolling production line, characterized in that: The cold rolling production line includes a rolling mill; the device includes: an information acquisition unit, configured to acquire physical information of defects of the steel strip before the steel strip enters the rolling mill, wherein the physical information of the defects includes edge distance, defect width, defect thickness, and defect length, wherein the edge distance is the distance between the defect and the edge of the steel strip; The skip control unit is used to control the position of the strip where the defect is located to skip the rolling mill if the physical information of the defect indicates that the possibility of a production accident on the cold rolling production line is greater than a preset possibility threshold, so as to prevent a production accident on the cold rolling production line.

10. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 8 when executing the computer program.

Images