Strip steel processing method and system, electronic equipment and computer program product

Abstract

The invention is suitable for the field of steel production, and provides a strip steel machining method and system, electronic equipment and a computer program product.The method comprises the steps that strip steel obtained after rough rolling machining is detected, and at least one first camber area of the strip steel and a first camber shape distribution parameter corresponding to each first camber area are obtained; on the basis of the first camber shape distribution parameter, camber removal correction is carried out on the first camber area; detecting whether the strip steel subjected to finish rolling has a second camber area or not; and if the second camber area exists, performing camber removal correction on the second camber area according to a second camber shape distribution parameter of the second camber area. According to the scheme, the camber defect in the strip steel can be reduced, and the strip steel yield is increased.

Description

Technical Field

[0001] The present application belongs to the field of steel production, and in particular, relates to a strip steel processing method, system, electronic equipment and computer program product. Background Art

[0002] During the strip rolling process, due to the influence of factors such as rolling force and temperature difference, the strip will have an asymmetric extension toward one side in the width direction, forming a sickle-shaped bending defect, that is, a sickle camber defect, which reduces the yield rate of the strip. The sickle camber defect in the strip affects its yield rate and is a technical problem that needs to be solved in strip processing. Summary of the invention

[0003] The embodiments of the present application provide a strip steel processing method, system, electronic equipment and computer program product to solve the problem in the prior art that the strip steel has sickle bend defects and reduces the yield rate.

[0004] A first aspect of an embodiment of the present application provides a strip steel processing method, comprising:

[0005] Detecting the steel strip after rough rolling to obtain at least one first sickle bend area of ​​the steel strip and a first sickle bend shape distribution parameter corresponding to each of the first sickle bend areas;

[0006] Based on the first sickle shape distribution parameter, performing a de-sickling correction on the first sickle area;

[0007] Detecting whether the strip steel after finish rolling has a second sickle bend area;

[0008] If the second sickle region exists, de-sickling correction is performed on the second sickle region according to the second sickle shape distribution parameter of the second sickle region.

[0009] A second aspect of an embodiment of the present application provides a strip steel processing system, comprising:

[0010] A first detection module is used to detect the strip steel after rough rolling, and obtain at least one first sickle bend area of ​​the strip steel and a first sickle bend shape distribution parameter corresponding to each first sickle bend area;

[0011] A first correction module, configured to perform a de-sickling correction on the first sickle area based on the first sickle shape distribution parameter;

[0012] A second detection module is used to detect whether the strip steel after the finish rolling process has a second sickle bend area;

[0013] The second correction module is used for, if the second sickle-curve area exists, performing a de-sickling correction on the second sickle-curve area according to a second sickle shape distribution parameter of the second sickle-curve area.

[0014] A third aspect of an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in the first aspect when executing the computer program.

[0015] A fourth aspect of an embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.

[0016] A fifth aspect of an embodiment of the present application 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 are implemented.

[0017] As can be seen from the above, the present application detects the steel strip after rough rolling, obtains at least one first sickle bend area of ​​the steel strip and its corresponding first sickle bend shape distribution parameters, and performs a first-stage de-sickling correction on the first sickle bend area in the steel strip based on this information to reduce sickle bend defects. Similarly, the steel strip after fine rolling is detected to see if there is a second sickle bend area, and if there is a second sickle bend area, the corresponding second sickle bend area is de-sickling corrected according to the second sickle bend shape distribution parameters to achieve the second-stage correction to reduce sickle bend defects. This dual detection and de-sickling correction mechanism effectively reduces sickle bend defects in the steel strip and improves the yield rate of the steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a flow chart of a strip steel processing method provided in an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of the width edge line and ideal center line of a steel strip provided in an embodiment of the present application;

[0021] Figure 3 This is a distribution diagram of a first vertical roller provided in an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram showing the relationship between a first vertical roll and a first bending direction provided by an embodiment of the present application;

[0023] Figure 5 It is a schematic diagram showing the distribution of a second vertical roll provided by an embodiment of the present application;

[0024] Figure 6 It is a schematic diagram of a strip steel production line provided by an embodiment of the present application;

[0025] Figure 7 It is a structural diagram of a strip steel processing system provided by an embodiment of the present application;

[0026] Figure 8 It is a structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0027] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are presented in order to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also 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 avoid unnecessary details from interfering with the description of the present application.

[0028] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0029] It should also be understood that the terms used in this specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in this specification of the present application and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0030] It should be further understood that the term "and / or" used in this specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] As used in this specification and the appended claims, the term "if" may be construed contextually as "when" or "upon" or "in response to determining" or "in response to detecting". Similarly, the phrases "if determined" or "if detected [described condition or event]" may be construed contextually to mean "upon determining" or "in response to determining" or "upon detecting [described condition or event]" or "in response to detecting [described condition or event]".

[0032] In a specific implementation, the terminals described in the embodiments of the present application include, but are not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers having a touch-sensitive surface (e.g., a touch screen display and / or a touchpad). It should also be understood that in some embodiments, the device is not a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touch screen display and / or a touchpad).

[0033] In the following discussion, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse, and / or a joystick.

[0034] The terminal supports various applications, such as one or more of the following: a drawing application, a presentation application, a word processing application, a website creation application, a disc burning application, a spreadsheet application, a game application, a telephone application, a video conferencing application, an email application, an instant messaging application, an exercise support application, a photo management application, a digital camera application, a digital video camera application, a web browsing application, a digital music player application, and / or a digital video player application.

[0035] The various applications that can be executed on the terminal can use at least one common physical user interface device such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and the corresponding information displayed on the terminal can be adjusted and / or changed between applications and / or within the corresponding applications. In this way, the common physical architecture of the terminal (e.g., the touch-sensitive surface) can support various applications with a user interface that is intuitive and transparent to the user.

[0036] It should be understood that the magnitudes of the sequence numbers of the steps in this embodiment do not mean the order of execution is prior or subsequent. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0037] In the production process of strip steel, factors such as the heating process on the production line, wear of processing equipment, and shape processing technology may cause uneven distribution of residual stress inside the strip steel, which in turn causes uneven extension of the strip steel in the width direction, resulting in sickle camber defects. Sickle camber defects affect the yield rate of strip steel, increase production costs, and may also affect production stability during the production process and reduce customer satisfaction.

[0038] In this regard, the present application provides a strip processing method, system, electronic equipment and computer program product to reduce sickle bend defects in the strip, improve the strip yield rate, reduce costs, improve customer satisfaction, and ensure stable strip production.

[0039] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0040] See also Figure 1 , Figure 1 1 is a flow chart of a strip steel processing method provided in an embodiment of the present application. Figure 1 As shown, a strip steel processing method comprises the following steps:

[0041] Step 101 , detecting the steel strip after rough rolling, and obtaining at least one first sickle bend region of the steel strip and a first sickle bend shape distribution parameter corresponding to each of the first sickle bend regions.

[0042] Rough rolling is a critical stage in the initial forming of strip steel. Due to the high temperature and severe plastic deformation of the strip steel, sickle camber defects will be significantly formed due to factors such as roll wear, uneven temperature, and unbalanced rolling force distribution. If the sickle camber defects after rough rolling are not corrected in time, the defects will be magnified in the subsequent processing stage, exacerbating plate defects such as edge waves and warping.

[0043] On the production line, the strip steel transmitted after rough rolling has a certain temperature, strong material fluidity and low resistance to plastic deformation. At this time, the cost of detecting and correcting sickle bend defects is low and the correction efficiency is high.

[0044] Through detection, at least one first sickle bend area of ​​the strip and the first sickle bend shape distribution parameters corresponding to each first sickle bend area can be identified, which facilitates the formulation of a correction plan, accurately corrects the strip, eliminates sickle bend defects as much as possible, and improves the yield rate of the strip.

[0045] In some embodiments, the shape of the steel strip after rough rolling is measured by a measuring device such as an infrared measuring instrument or a laser rangefinder, that is, the distance between the two width edge lines of the steel strip and its theoretical center line is measured. The width edge line is the actual edge line of the steel strip, and the theoretical center line is a virtual axis extending along the rolling direction and equidistant from the target width of the steel strip.

[0046] For the sake of description, the two width edge lines are referred to as the left edge line and the right edge line. Facing the strip conveying direction, the width edge line on the left is the left edge line, and the width edge line on the right is the right edge line. As Figure 2 shown, Figure 2 Figure Figure 2 is a schematic diagram of the width edge lines and the ideal center line of a strip provided by an embodiment of the present application, Figure 2 which is a top view. Figure 2 Two width edge lines and the ideal center line are shown. Among them, the ideal center line is equidistant from the target width of the strip, for example, both are x, and x is a positive real number. According to Figure 2 it can be clearly known what the width edge lines (the left edge line and the right edge line) are and what the ideal center line is.

[0047] The ideal center line is the benchmark for evaluating the shape deviation of the strip, that is, whether there is a camber defect. By measuring the distance between the width edge line of the strip and the theoretical center line, the shape deviation of the strip is determined.

[0048] Compare the first measurement distance between the measured width edge line and the ideal center line with a set distance, and the set distance is determined based on the target width of the strip.

[0049] In some embodiments, the set distance is a specific value or a value range. For example, it is a specific value such as half of the target width, or a value range that fluctuates up and down by a certain amount based on half of the target width.

[0050] For example, if the target width of the strip is 2250 mm, the set distance is 1125 mm, or [1125.0 mm, 1125.2 mm].

[0051] If the first measurement distance does not belong to the set distance, determine the position corresponding to the first measurement distance as the first bending position, that is, there is a camber defect at this position. Further determine the first bending direction and the first bending offset according to the magnitude relationship between the first measurement distance and the set distance. The first bending offset specifically refers to the offset on the side of the first bending direction.

[0052] That is, if the measurement distance between the width edge line and the ideal center line at a certain position of the strip does not belong to the set distance, it is considered that this position is the bending position with a camber defect, and the area corresponding to the bending position with a camber defect is the camber area. That is, the measurement distance between the width edge line and the ideal center line of the strip in the camber area does not belong to the set distance.

[0053] For a certain first bending position, there are two first measurement distances, that is, the first measurement distance corresponding to the left edge line and the first measurement distance corresponding to the right edge line. When determining the first bending offset and the first bending direction, use the larger first measurement distance as the comparison object for comparison with the set distance.

[0054] For example, if the set distance is 1125mm, the first measured distance between the left edge line and the ideal center line is 1126mm, and the first measured distance between the right edge line and the ideal center line is 1124mm, and the first measured distance is not equal to the set distance, then it is determined that there is a sickle defect at this position, and accordingly, this position is the first bending position. The first measured distance corresponding to the left edge line is greater than the set distance, and the first measured distance corresponding to the right edge line is less than the set distance, and then the first bending direction is determined to be bending to the left. The first bending offset is the difference between the first measured distance for comparison and the set distance, which is 1mm here.

[0055] like Figure 2 As shown, Figure 2 The sickle bend defect shown has a larger first measurement distance corresponding to the right edge line. The first bending direction is determined based on the first measurement distance corresponding to the right edge line, which is bending to the right. The first bending offset is determined based on the set distance and the first measurement distance corresponding to the right edge line.

[0056] After distance measurement and distance comparison, at least one first sickle bend area in the strip and the first sickle bend shape distribution parameters corresponding to each first sickle bend area are determined, wherein the first sickle bend shape distribution parameters include the first bend offset and the first bend direction corresponding to different first bend positions.

[0057] In some embodiments, along the transmission direction of the steel strip, the front end of the steel strip is the head of the steel strip, the head of the steel strip is the position zero point, and the distance between any point in the steel strip and the head of the steel strip is the position of the point.

[0058] In some embodiments, in addition to measuring the shape of the steel strip, the temperature of the steel strip is also measured by a temperature measuring device, such as an infrared thermometer, to obtain a measured temperature value. The measured temperature value is used to determine whether the first sickle bend area needs to be heated. Heating softens the steel strip material. The softened steel strip is more likely to undergo plastic deformation, and the plastic deformation is more uniform. The correction of the steel strip is easier to achieve, thereby improving the correction efficiency and correction quality.

[0059] Step 102: performing a de-sickling correction on the first sickle region based on the first sickle shape distribution parameter.

[0060] According to the first sickle shape distribution parameters, the corresponding first sickle area is corrected, that is, the first stage correction of the strip is achieved, the sickle defects in the strip are reduced, and the yield rate of the strip is improved.

[0061] In some embodiments, the method of removing the camber from the first camber region based on the first camber shape distribution parameter includes: calculating the displacement adjustment timing among a plurality of first vertical rolls and the displacement adjustment parameter of each of the first vertical rolls based on the first camber shape distribution parameter and the strip transfer speed; and controlling the first vertical rolls to correct the first camber region according to the displacement adjustment timing and the displacement adjustment parameter.

[0062] In some embodiments, vertical rolls are used to correct the strip and eliminate its camber defect.

[0063] In some embodiments, the vertical rolls are arranged in groups, and the plurality of first vertical rolls include at least one group of vertical rolls, and each group of first vertical rolls is arranged oppositely.

[0064] As Figure 3 shown, Figure 3 is a schematic diagram of the distribution of a first vertical roll provided by an embodiment of the present application, Figure 3 which is a top view. The first vertical roll is arranged on the production line after the rough rolling equipment and before the finish rolling equipment. Each group of first vertical rolls is arranged oppositely on both sides of the strip width. Each group of first vertical rolls cooperates with each other when correcting the first bending position.

[0065] Based on the first camber shape distribution parameter and the strip transfer speed, calculate the displacement adjustment timing among a plurality of first vertical rolls, that is, the displacement adjustment timing when the plurality of first vertical rolls respectively correct a plurality of first bending positions, and calculate the displacement adjustment parameter of each first vertical roll.

[0066] Adjust the first vertical roll according to the displacement adjustment timing and the displacement adjustment parameter to realize the correction of the first camber region by the first vertical roll, so as to reduce the camber defect.

[0067] In some embodiments, the displacement adjustment parameter includes a displacement direction and a displacement amount. The method of calculating the displacement adjustment timing among a plurality of first vertical rolls and the displacement adjustment parameter of each of the first vertical rolls based on the first camber shape distribution parameter and the strip transfer speed includes: determining the displacement direction and the displacement amount of each first vertical roll according to the first bending offset amount and the first bending direction corresponding to each first bending position; and calculating the time point when each first vertical roll corrects the first bending position according to the strip transfer speed and the distance between each first bending position and the first vertical roll, so as to obtain the displacement adjustment timing among the plurality of first vertical rolls.

[0068] Clarify the displacement direction and the displacement amount when each first vertical roll corrects the first bending position and the time point of moving the corresponding displacement amount in accordance with the displacement direction, so as to ensure the accurate correction of the first bending position by the first vertical roll and improve the correction efficiency.

[0069] The displacement direction and displacement amount of the first vertical roll are related to the first bending direction and the first bending offset amount at the first bending position. According to the first bending offset amount and the first bending direction corresponding to each first bending position, the displacement direction and displacement amount of each first vertical roll when correcting the first bending position can be determined.

[0070] In some embodiments, each first vertical roll is located at a set position in the initial state, and the displacement amount is the moving amount relative to the set position in the initial state.

[0071] As Figure 4 shown, Figure 4 is a schematic diagram of the relationship between the first vertical roll and the first bending direction provided by an embodiment of the present application, Figure 4 which is a top view. In Figure 4 , for the first bending position, the first vertical rolls located on the same side of the first bending direction are called A rolls, and the first vertical rolls located on the opposite side of the first bending direction are called B rolls. Each A roll corresponds to a B roll arranged oppositely thereto.

[0072] When the first bending offset amount at the first bending position is greater than the set offset amount, after the nth A roll among the multiple A rolls corrects the first bending position, the first bending offset amount at the first bending position becomes less than or equal to the set offset amount. Along the strip conveying direction, the displacement direction of the first A roll to the nth A roll is the same as the first bending direction of the first bending position, that is, they are positively correlated. The displacement direction of the (n + 1)th A roll to the last A roll used for correction is opposite to the first bending direction, that is, they are negatively correlated. Here, n is a positive integer.

[0073] Correspondingly, when the first bending offset amount at the first bending position is greater than the set offset amount, along the strip conveying direction, the displacement direction of the first B roll to the nth B roll is the same as the first bending direction of the first bending position, that is, they are positively correlated, and the displacement amounts decrease in sequence. The displacement direction and displacement amount of the (n + 1)th B roll to the last B roll used for correction remain at the set value. That is, the B rolls assist the A rolls in correction, which can not only improve the correction efficiency but also prevent the strip from detaching from the strip conveyor belt.

[0074] When the first bending offset amount at the first bending position is less than or equal to the set offset amount, along the strip conveying direction, the displacement directions of the multiple A rolls are opposite to the first bending direction of the first bending position, that is, they are negatively correlated. Correspondingly, the displacement directions and displacement amounts of the multiple B rolls remain at the set value. The A rolls and B rolls work together to correct the strip and reduce the sickle bend defect.

[0075] In some embodiments, for the oppositely arranged first vertical rolls, the force exerted by the A roll on the strip is greater than or equal to the force exerted by the B roll on the strip to achieve effective correction.

[0076] In some embodiments, the displacement of the first vertical roll is determined based on the first bending direction, the first bending offset, and the material parameters of the strip, and the material parameters include width, thickness, stiffness, etc.

[0077] In some embodiments, the moving speed of the first vertical roll is relatively fast, that is, the time for the first vertical roll to move from the set position, etc. to the target position corresponding to the displacement direction and displacement is relatively short, and generally the moving time in this width direction is ignored. Taking the strip transmission speed as the speed v and the distance between the first bending position and the first vertical roll as the distance s, through The formula is used to calculate the time point for each first vertical roll to correct the first bending position, and the adjustment time points for each first vertical roll to correct multiple first bending positions are correspondingly obtained, and then the displacement adjustment time sequence of multiple first vertical rolls is obtained.

[0078] In some embodiments, the movement of the first vertical roll is controlled by drive control technologies such as hydraulic drive, so that the first vertical roll can quickly move to the target position corresponding to the displacement direction and displacement to correct the corresponding first bending position.

[0079] In some embodiments, calculate the height offset formed in the vertical plane by the rolling force corresponding to the first bending offset of each first bending position; based on the height offset and the steel type of the strip, calculate the height compensation force for correcting the height offset; when adjusting the first vertical roll according to the displacement adjustment time sequence and the displacement adjustment parameters, apply the height compensation force to the first bending position.

[0080] When the first vertical roll corrects the first bending position, if the rolling force applied by the first vertical roll is large, it may cause the strip at this position to form a shape deviation in the vertical plane, that is, the height offset. To eliminate this defect, calculate the height offset formed in the vertical plane by the rolling force corresponding to the first bending offset of the first bending position, and combine the steel type of the strip to calculate the height compensation force for correcting this height offset. When the first vertical roll works, apply the corresponding height compensation force to the first bending position.

[0081] In some embodiments, control the lifting amount of devices such as intelligent lifting baffles to apply a corresponding height compensation force to the strip to eliminate the height offset.

[0082] In some embodiments, before performing the deskewing correction on the first skewed bend region based on the first skewed bend shape distribution parameter, it further includes: determining a target temperature value based on the measured temperature value of each first skewed bend region and the steel type of the strip; heating the first skewed bend region until the target temperature value is reached.

[0083] A heating device, such as heating resistance wires, is provided between the rough rolling equipment and the first vertical roll to heat the first camber area, enabling it to quickly reach the target temperature value, adjusting the temperature uniformity of the strip, reducing the yield strength of the strip, that is, reducing the deformation resistance of the strip, making it easier to achieve correction, and also being able to reduce the wear amount of the first vertical roll.

[0084] Step 103: Detect whether there is a second camber area in the strip after finish rolling.

[0085] In some embodiments, in the first-stage camber correction, due to factors such as calculation errors in correction data, the camber defects in the strip may not be completely eliminated. Subsequently, due to the influence of factors such as rolling force fluctuations and temperature fluctuations during finish rolling, new camber defects may be generated or old camber defects may be enlarged. Therefore, in this application, the strip after finish rolling is measured again to detect whether there are camber defects.

[0086] In some embodiments, through measuring devices such as infrared measuring instruments or laser rangefinders, the shape of the strip after finish rolling is measured, that is, the distances between the two width edge lines (left edge line and right edge line) of the strip and its theoretical center line are measured.

[0087] The second measured distances between the measured width edge lines and the ideal center line are compared with the set distances.

[0088] If the second measured distance does not belong to the set distance, the position corresponding to the second measured distance is determined as the second bending position, that is, there is a camber defect at this position. The second bending direction and the second bending offset amount are further determined according to the magnitude relationship between the second measured distance and the set distance. The second bending offset amount specifically refers to the offset amount on this side of the second bending direction.

[0089] By distance measurement and distance comparison, it is detected whether there is a camber defect in the strip, that is, whether there is a second camber area in the strip. The determination process of the camber area based on distance measurement and distance comparison can refer to the aforementioned determination process of the first camber area, which will not be elaborated here.

[0090] By distance measurement and distance comparison, the possible camber defects in the strip can be accurately identified, facilitating accurate correction in the second stage.

[0091] Step 104: If there is the second camber area, camber correction is performed on the second camber area according to the second camber shape distribution parameters of the second camber area.

[0092] If there is a second camber region, during the distance measurement and distance comparison after the aforementioned finish rolling, the corresponding second camber shape distribution parameters for each second camber region are obtained. Among them, the second camber shape distribution parameters include the second bending offset and the second bending direction corresponding to different second bending positions.

[0093] In some embodiments, along the strip conveying direction, the front end of the strip is the strip head, the strip head is the position zero point, and the distance between any point on the strip and the strip head is used as the position of this point, so as to obtain multiple second bending positions corresponding to the second camber region. Correspondingly, each second bending position corresponds to a second bending offset and a second bending direction.

[0094] According to the second camber shape distribution parameters, the residual camber defects in the first stage are corrected, and at the same time, the new camber defects generated during finish rolling are corrected, further reducing the camber defects in the strip.

[0095] In some embodiments, if there is the second camber region, then according to the second camber shape distribution parameters of the second camber region, the de-camber correction of the second camber region is performed, including: if there is the second camber region, then according to the second bending offset and the second bending direction corresponding to each second bending position, the target roll diameter required to correct the second bending offset is determined; control the second vertical rolls with the target roll diameter on the same side of the second bending direction to correct the second bending position.

[0096] In some embodiments, the second vertical rolls are located on both sides of the coiling equipment. As Figure 5 shown, Figure 5 is a schematic diagram of the distribution of a second vertical roll provided by an embodiment of the present application, Figure 5 which is a top view. Figure 5 The roll diameters of the second vertical rolls arranged oppositely shown are R1 and R2 respectively, and R1 < R2. That is, in the second stage, the camber defects of the strip are corrected by adjusting the roll diameters of the vertical rolls. Among them, the roll diameter is the diameter.

[0097] For the region without camber defects, the second vertical rolls with the set roll diameter can be used.

[0098] At the second bending position with camber defects, according to the second bending offset, the target roll diameter required to correct this position is calculated. The second vertical roll on the opposite side of the second bending direction is the vertical roll with the set roll diameter, and the second vertical roll on the same side of the second bending direction is the vertical roll with the target roll diameter.

[0099] In some embodiments, given the strip conveying speed and the distance (i.e., the path) between the second bending position and the second vertical roll, the switching timing of the second vertical roll is calculated through the formula.

[0100] According to the switching sequence, the roll diameter of the second vertical roll is adjusted to correct the second sickle bend area in the strip.

[0101] In some embodiments, the second vertical roller is an expansion roller to achieve flexible adjustment of the roller diameter.

[0102] In some embodiments, it is detected whether there is an overlapping area between the first sickle-curve area and the second sickle-curve area; if there is the overlapping area, self-learning is performed based on the first sickle-curve shape distribution parameters and the second sickle-curve shape distribution parameters of the overlapping area.

[0103] By comparing the positions of the first sickle area and the second sickle area, it is detected whether there is an overlapping area. In the first stage, the correction plan formulated is not accurate enough, which may lead to the appearance of overlapping areas. Therefore, self-learning is performed based on the first sickle shape distribution parameters and the second sickle shape distribution parameters of the overlapping area to improve the accuracy of the correction plan formulation, which can not only accurately correct, but also reduce the correction resource consumption of the secondary correction.

[0104] In addition, the strip processing system of the present application will record various correction data during the processing, such as the measured temperature value, the displacement adjustment timing of the first vertical roller, the target roller diameter of the second vertical roller, etc., and continuously perform self-learning to improve the correction efficiency and correction quality, reduce the sickle bend defects in the strip, and improve the strip yield rate.

[0105] like Figure 6 As shown, Figure 6 is a schematic diagram of a strip steel production line provided in an embodiment of the present application, Figure 6 This is a top view. Figure 6 Shown are a roughing equipment, a first measuring device, a heating device, a first edger, a finishing equipment, a second measuring device, a coiling equipment and a second edger.

[0106] The first measuring device is used to measure the shape and temperature, determine the first sickle bend area and the corresponding first sickle bend shape distribution parameters and the measured temperature value. After heating by the heating device, the first stage of correction is achieved by the first vertical roller. The second measuring device is used to measure the shape of the strip output by the finishing equipment to detect whether there is a second sickle bend area. Then, the second vertical rollers on both sides of the coiling equipment are used to correct the existing second sickle bend area to reduce the sickle bend defect.

[0107] In some embodiments, a device such as an intelligent lifting baffle that provides height compensation force is arranged above the strip processing area corresponding to the first vertical roller.

[0108] In some embodiments, there is a scrap steel ejection device after the first measuring device. If the first bend offset in the first sickle bend area is greater than the correctable offset, it is considered that the sickle bend defect cannot be corrected, and the strip is determined to be scrap steel. The strip is processed by the scrap steel ejection device to avoid blind correction, reduce waste of resources, avoid equipment damage, and increase the service life of the equipment.

[0109] Figure 6 The strip steel production line shown can be applied to strip steel production lines of various specifications, such as a 2250 hot rolling production line, to achieve high-quality processing of strip steel.

[0110] In the embodiment of the present application, the strip after rough rolling is detected to obtain at least one first sickle bend area of ​​the strip and its corresponding first sickle bend shape distribution parameters, and the first stage of sickle removal correction is performed on the first sickle bend area in the strip based on this information to reduce sickle defects. Similarly, it is detected whether there is a second sickle bend area in the strip after fine rolling, and if there is a second sickle bend area, the corresponding second sickle bend area is corrected for sickle removal according to the second sickle bend shape distribution parameters to achieve the second stage of correction to reduce sickle defects. This dual detection and sickle removal correction mechanism effectively reduces sickle defects in the strip and improves the yield rate of the strip.

[0111] See also Figure 7 , Figure 7 This is a structural diagram of a strip steel processing system provided in an embodiment of the present application. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0112] The strip steel processing system 700 includes: a first detection module 701 , a first correction module 702 , a second detection module 703 , and a second correction module 704 .

[0113] The first detection module 701 is used to detect the steel strip after rough rolling, and obtain at least one first sickle bend area of ​​the steel strip and a first sickle bend shape distribution parameter corresponding to each of the first sickle bend areas.

[0114] The first correction module 702 is used to perform a de-sickling correction on the first sickle area based on the first sickle shape distribution parameter.

[0115] The second detection module 703 is used to detect whether the strip after the finish rolling process has a second sickle bend area.

[0116] The second correction module 704 is used for, if the second sickle region exists, performing a de-sickling correction on the second sickle region according to a second sickle shape distribution parameter of the second sickle region.

[0117] In some embodiments, the first correction module is specifically configured to:

[0118] Based on the first camber shape distribution parameter and the strip transfer speed, calculate the displacement adjustment timing among multiple first vertical rolls and the displacement adjustment parameters of each of the first vertical rolls;

[0119] According to the displacement adjustment timing and the displacement adjustment parameters, control the first vertical rolls to correct the first camber region.

[0120] In some embodiments, the first camber shape distribution parameter includes a first bending offset and a first bending direction corresponding to different first bending positions, the displacement adjustment parameter includes a displacement direction and a displacement amount, and the system further includes a calculation module, which is configured to:

[0121] Determine the displacement direction and the displacement amount of each of the first vertical rolls according to the first bending offset and the first bending direction corresponding to each of the first bending positions;

[0122] According to the strip transfer speed and the distance between each of the first bending positions and the first vertical rolls, calculate the time points at which each of the first vertical rolls correct the first bending positions, and obtain the displacement adjustment timing among the multiple first vertical rolls.

[0123] In some embodiments, the calculation module is further configured to:

[0124] Calculate the height offset formed by the rolling force corresponding to the first bending offset of each of the first bending positions in the vertical plane;

[0125] Based on the height offset and the steel type of the strip, calculate a height compensation force for correcting the height offset;

[0126] When adjusting the first vertical rolls according to the displacement adjustment timing and the displacement adjustment parameters, apply the height compensation force to the first bending positions.

[0127] In some embodiments, the system further includes a heating module, which is configured to:

[0128] Based on the measured temperature value of each of the first camber regions and the steel type of the strip, determine a target temperature value;

[0129] Heat the first camber region until the target temperature value is reached.

[0130] In some embodiments, the second camber shape distribution parameter includes a second bending offset and a second bending direction corresponding to different second bending positions, and the second correction module is specifically configured to:

[0131] If there is the second sickle bend area, determine a target roll diameter required to correct the second bending offset according to the second bending offset corresponding to each of the second bending positions and the second bending direction.

[0132] Control a second vertical roll having the target roll diameter on the same side as the second bending direction to correct the second bending position.

[0133] In some embodiments, the system further includes a self-learning module configured to:

[0134] Detect whether there is an overlapping area between the first sickle bend area and the second sickle bend area;

[0135] If there is the overlapping area, perform self-learning based on the first sickle bend shape distribution parameter and the second sickle bend shape distribution parameter of the overlapping area.

[0136] The strip processing system provided by the embodiments of the present application can implement each process of the embodiments of the above strip processing method and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0137] Figure 8 It is a structural diagram of an electronic device provided by an embodiment of the present application. As shown in this figure, the electronic device 8 of this embodiment includes: at least one processor 80 ( Figure 8 only one is shown), a memory 81, and a computer program 82 stored in the memory 81 and executable on the at least one processor 80. When the processor 80 executes the computer program 82, the steps in any of the above method embodiments are implemented.

[0138] The electronic device 8 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The electronic device 8 may include, but is not limited to, a processor 80 and a memory 81. Those skilled in the art can understand that Figure 8 it is only an example of the electronic device 8 and does not constitute a limitation on the electronic device 8. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, the electronic device may further include input / output devices, network access devices, a bus, etc.

[0139] The processor 80 may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0140] The memory 81 may be an internal storage unit of the electronic device 8, such as a hard disk or memory of the electronic device 8. The memory 81 may also be an external storage device of the electronic device 8, such as a plug-in hard disk equipped on the electronic device 8, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory 81 may also include both the internal storage unit and the external storage device of the electronic device 8. The memory 81 is used to store the computer program and other programs and data required by the electronic device. The memory 81 may also be used to temporarily store data that has been output or is to be output.

[0141] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules as needed, that is, the internal structure of the system is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0142] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0143] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0144] In the embodiments provided in this application, it should be understood that the disclosed systems / electronic devices and methods can be implemented in other ways. For example, the system / electronic device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, 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 displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the systems or units can be in electrical, mechanical or other forms.

[0145] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0146] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0147] 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, to implement all or part of the processes in the above-described embodiment methods of this application, it can also be completed by instructing 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 a processor, the steps of the above-described various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0148] To implement all or part of the processes in the above-described embodiment methods of this application, it can also be achieved through a computer program product. When the computer program product runs on an electronic device, it causes the electronic device to execute and implement the steps in the above-described various method embodiments.

[0149] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A strip steel processing method, characterized in that: include: Detecting the steel strip after rough rolling to obtain at least one first sickle bend area of ​​the steel strip and a first sickle bend shape distribution parameter corresponding to each of the first sickle bend areas; Based on the first sickle shape distribution parameter, performing a de-sickling correction on the first sickle area; Detecting whether the strip steel after finish rolling has a second sickle bend area; If the second sickle region exists, de-sickling correction is performed on the second sickle region according to the second sickle shape distribution parameter of the second sickle region.

2. The method according to claim 1, characterized in that The step of performing de-sickling correction on the first sickle area based on the first sickle shape distribution parameter includes: Calculating the displacement adjustment timing between a plurality of first vertical rollers and the displacement adjustment parameters of each of the first vertical rollers based on the first camber shape distribution parameters and the strip transmission speed; According to the displacement adjustment sequence and the displacement adjustment parameters, the first vertical roller is controlled to correct the first sickle bend area.

3. The method according to claim 2, characterized in that The first camber shape distribution parameters include first camber offsets and first camber directions corresponding to different first camber positions, the displacement adjustment parameters include displacement directions and displacements, and the displacement adjustment timings between the plurality of first vertical rollers and the displacement adjustment parameters of each of the first vertical rollers are calculated based on the first camber shape distribution parameters and the strip transmission speed, including: Determining the displacement direction and the displacement amount of each first vertical roller according to the first bending offset and the first bending direction corresponding to each first bending position; According to the strip transmission speed and the distance between each first bending position and the first vertical roller, the time point at which each first vertical roller corrects the first bending position is calculated to obtain the displacement adjustment timing between the plurality of first vertical rollers.

4. The method according to claim 3, characterized in that: The method further comprises: Calculating a height offset in a vertical plane caused by a rolling force corresponding to the first bending offset at each first bending position; Calculating a height compensation force for correcting the height offset based on the height offset and the steel grade of the steel strip; When the first vertical roller is adjusted according to the displacement adjustment sequence and the displacement adjustment parameter, the height compensation force is applied to the first bending position.

5. The method according to claim 1, characterized in that Before performing de-sickling correction on the first sickle area based on the first sickle shape distribution parameter, the method further includes: Determining a target temperature value based on the measured temperature value of each of the first sickle bend areas and the steel grade of the steel strip; The first sickle-shaped region is heated until the target temperature value is reached.

6. The method according to claim 1, characterized in that The second sickle shape distribution parameters include a second bend offset and a second bend direction corresponding to different second bend positions, and if the second sickle region exists, performing a de-sickling correction on the second sickle region according to the second sickle shape distribution parameters of the second sickle region, including: If the second sickle bend area exists, determining a target roller diameter required for correcting the second bend offset according to the second bend offset and the second bend direction corresponding to each second bend position; The second bending position is corrected by controlling a second vertical roller having the target roller diameter and located on the same side as the second bending direction.

7. The method according to claim 1, characterized in that The method further comprises: Detecting whether there is an overlapping area between the first sickle-curve area and the second sickle-curve area; If the overlapped area exists, self-learning is performed based on the first sickle shape distribution parameters and the second sickle shape distribution parameters of the overlapped area.

8. A strip steel processing system, characterized in that: include: A first detection module is used to detect the strip steel after rough rolling, and obtain at least one first sickle bend area of ​​the strip steel and a first sickle bend shape distribution parameter corresponding to each first sickle bend area; A first correction module, configured to perform a de-sickling correction on the first sickle area based on the first sickle shape distribution parameter; A second detection module is used to detect whether the strip steel after the finish rolling process has a second sickle bend area; The second correction module is used for, if the second sickle-curve area exists, performing a de-sickling correction on the second sickle-curve area according to a second sickle shape distribution parameter of the second sickle-curve area.

9. An electronic device, characterized in that: The electronic device comprises 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 electronic device implements the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed, causes the method according to any one of claims 1 to 7 to be performed.

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