A method for controlling and determining a roughing camber of a hot continuous rolling mill

Abstract

The application discloses a kind of hot roughing mill camber furnace control determination methods, belong to plate strip rolling technical field, the method includes: collecting strip steel specification parameter in roughing rolling process, camber control quantity and quality parameter;Based on strip steel specification parameter, determine the current production line real-time production mode;Wherein, the production mode includes: single-furnace production mode, double-furnace production mode and multi-furnace production mode;If the current production line real-time production mode is double-furnace production mode or multi-furnace production mode, then based on strip steel specification parameter and camber control quantity, determine whether there is difference between heating furnace;If there is difference between heating furnace, then based on quality parameter, determine difference furnace and difference direction.The application scheme can complete furnace control determination according to production process data, realize the furnace control of camber control, so as to improve the quality stability of roughing camber control.

Description

Technical Field

[0001] This invention relates to the field of strip rolling technology, and in particular to a method for controlling and determining the sickle bend in the roughing furnace of hot continuous rolling mill. Background Technology

[0002] During the strip rolling process, inconsistencies in thickness and temperature on both sides of the incoming material, differences in mill rigidity and hydraulic cylinder performance on both sides, and misalignment of the side guide plates can cause the strip steel to easily form a camber shape. Therefore, controlling the camber in the roughing of hot-rolled strip steel is of great significance for stable production operation, product quality, and yield control.

[0003] Currently, the control of camber in roughing mills in industrial settings is achieved through a non-furnace-specific control method, meaning a uniform standard roll gap value is issued for incoming strip steel from multiple heating furnaces. This control method fails to account for the differences between individual heating furnaces, leading to substandard camber control indicators. Summary of the Invention

[0004] This invention provides a method for determining the control of sickle bend in hot continuous rolling roughing mills by furnace division, in order to solve the technical problem that the existing roughing mill sickle bend control method adopts non-furnace division control, which fails to consider the differences between the heating furnaces, thus leading to unqualified sickle bend control indicators.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] On the one hand, the present invention provides a method for controlling and determining the sickle bend of the roughing mill in a hot continuous rolling mill, comprising:

[0007] Collect strip specifications, camber adjustment amount, and quality parameters during the roughing rolling process;

[0008] Based on the strip steel specifications, the real-time production mode of the current production line is determined; wherein, the production mode includes: single-furnace production mode, dual-furnace production mode, and multi-furnace production mode;

[0009] If the current production line is in dual-furnace or multi-furnace production mode, then based on the strip steel specifications and the camber adjustment amount, determine whether there are differences between the heating furnaces.

[0010] If there are differences between heating furnaces, the differences and directions are determined based on quality parameters.

[0011] Furthermore, the strip steel specifications include the steel type, thickness, width, and corresponding furnace number of each strip steel in the n strip steel pieces before the current time node;

[0012] The sickle bend control amount includes the first roll gap value and the last roll gap value corresponding to each of the n strips in the current time node.

[0013] The quality parameters include the first and last exit sickle bends of each strip in the n strips before the current time node.

[0014] Where n is a preset integer value greater than 1, and its range is determined according to the specific production line.

[0015] Furthermore, determining the real-time production mode of the current production line based on strip steel specifications includes:

[0016] The number of different heating furnaces from which each of the n strip steel pieces corresponding to the furnace number of the current time point is collected is counted;

[0017] If m equals 1, then the current production line's real-time production mode is determined to be single-furnace production mode;

[0018] If m equals 2, then the current production mode of the production line is determined to be the dual-furnace production mode.

[0019] If m is greater than 2, then the current production line is determined to be in multi-furnace production mode.

[0020] Furthermore, determining whether there are differences between heating furnaces based on strip steel specifications and camber adjustment includes:

[0021] Compare the steel type, thickness and width of each strip in the n strips before the current time node to see if they are consistent. If the data are consistent, calculate the absolute difference between the first roll gap values ​​of each pair of the n strips before the current time node to form a set of the first roll gap value difference of the strip.

[0022] If the maximum value in the set of differences in the first roll gap of the strip is less than e, then the maximum difference ΔZ in the first exit sickle bend of two strips among the n strips collected before the current time node is further calculated, and the formula is:

[0023] ΔZ=|max{Z 1h Z 2h ,…,Z nh}-min{Z 1h Z 2h ,…,Z nh}|

[0024] Where e is a preset constant, its value range is [0.2, 0.4]; max{Z 1h Z 2h ,…,Z nh} represents the maximum value of the first exit sickle bend among the n strips collected before the current time point; min{Z 1h Z 2h ,…,Z nh} represents the minimum value of the first exit sickle bend among the n strips collected before the current time point; {Z 1h Z 2h ,…,Z nh} represents the set of the first exit sickle bends of the n strips before the current time point;

[0025] If ΔZ is greater than c, then the heating furnaces are determined to be different; if ΔZ is not greater than c, then the heating furnaces are determined to be different; where c is a preset constant, and its value range is [20, 40].

[0026] Furthermore, determining the differential furnace and differential direction based on quality parameters includes:

[0027] Based on the quality parameters, the difference furnace and difference direction of the first pass are determined, and the difference judgment result of the first pass is obtained;

[0028] Based on the quality parameters, the difference furnace and difference direction of the last pass are determined, and the difference judgment result of the last pass is obtained.

[0029] The final difference determination result is obtained by combining the difference determination results of the first and last passes.

[0030] Furthermore, determining the difference furnace and difference direction of the first pass based on quality parameters includes:

[0031] The following formula is used to determine whether the bending amount is on the same side:

[0032]

[0033] Among them, Z ih Z represents the first exit sickle bend of the i-th strip; jh This is the first exit sickle bend for the j-th strip;

[0034] If the bending amount is not on the same side, then calculate the average value A of the first exit sickle bend on the drive side of the n strips before the current time node. dh And the average value A of the first exit sickle bends of the n strips distributed on the operating side before the current time point. oh ;

[0035] A dh With A oh Compare them, if A dh Greater than A ohThen, the heating furnace corresponding to the first exit sickle bend on the transmission side is determined to be a differential furnace, and the differential direction is the transmission deflection direction; if A dh Not greater than A oh If so, the heating furnace corresponding to the first exit sickle bend on the operating side is determined to be a differential furnace and the differential direction is the operating bias.

[0036] If the bending amount is on the same side, then calculate the average value A of the first exit sickle bends of the n strips preceding the current time point. h Then, calculate the maximum value of the first exit sickle bend corresponding to the n strips before the current time point and A. h The absolute difference ΔZ hmax And the minimum value of the first exit sickle bend corresponding to the n strips before the current time point and A h The absolute difference ΔZ hmin ;

[0037] ΔZ hmax With ΔZ hmin Compare the results; if ΔZ hmax Greater than ΔZ hmin Then, the heating furnace corresponding to the maximum value of the first exit sickle bend is determined to be a differential furnace, and the differential direction is the drive side; if ΔZ hmax Not greater than ΔZ hmin If the minimum value of the first exit sickle bend is determined, the heating furnace corresponding to it is a differential furnace and the differential direction is the operating side.

[0038] Furthermore, determining the difference furnace and difference direction in the final pass based on quality parameters includes:

[0039] The following formula is used to determine whether the bending amount is on the same side:

[0040]

[0041] Among them, Z it Z represents the final exit sickle bend of the i-th strip; jt The final exit sickle bend of the j-th strip;

[0042] If the bending amount is not on the same side, then calculate the average value A of the final exit sickle bend of the n strips distributed on the drive side before the current time node. dt And the average value A of the final exit sickle bends of the n strips distributed on the operating side before the current time point. ot ;

[0043] A dt With A ot Compare them, if A dt Greater than A otThen, the heating furnace corresponding to the sickle-shaped bend at the final exit on the transmission side is determined to be a differential furnace, and the differential direction is the transmission bias; if A dt Not greater than A ot If so, the heating furnace corresponding to the sickle bend at the last exit on the operating side is determined to be a differential furnace and the differential direction is the operating bias.

[0044] If the bending amount is on the same side, then calculate the average value A of the final exit sickle bend of the n strips preceding the current time point. t Then, calculate the maximum value of the final exit sickle bend corresponding to the n strips before the current time point and A. t The absolute difference ΔZ tmax And the minimum value of the final exit sickle bend corresponding to the n strips before the current time point and A t The absolute difference ΔZ tmin ;

[0045] ΔZ tmax With ΔZ tmin Compare the results; if ΔZ tmax Greater than ΔZ tmin Then, the heating furnace corresponding to the maximum value of the sickle bend at the final exit is determined to be a differential furnace, and the differential direction is the drive side; if ΔZ tmax Not greater than ΔZ tmin If the minimum value of the sickle bend at the final exit is determined, the heating furnace corresponding to it is a differential furnace and the differential direction is the operating side.

[0046] Furthermore, by combining the difference determination results of the first and last passes, the final difference determination results are obtained, including:

[0047] Calculate the absolute difference between the roll gap value issued for the first pass and the roll gap value issued for the last pass for each strip steel.

[0048] If the absolute difference between the roll gap values ​​issued for the first and last passes of all strip steel is not greater than a, then the judgment result of the last pass is used as the difference judgment result for the first n strip steels; otherwise, the judgment result of the first pass is used as the difference judgment result for the first n strip steels; where a is a preset constant, and its value range is [0.3, 0.4].

[0049] In another aspect, the present invention also provides an electronic device comprising a processor and a memory; wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the above-described method.

[0050] In another aspect, the present invention also provides a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the above method.

[0051] The beneficial effects of the technical solution provided by this invention include at least the following:

[0052] This invention collects strip specifications, camber adjustment amounts, and quality parameters during the roughing rolling process as production judgment data. It then sequentially judges these parameters to determine the real-time production mode, differences, furnace variations, and direction of variation on the production line. The judgment results for differences, furnace variations, and direction of variation are integrated and output as the model's judgment result, serving as a prerequisite for furnace-specific control. This effectively solves the problem in existing technologies that use the same standard to control the camber of materials from different heating furnaces, resulting in substandard camber control indicators due to the lack of consideration for the differences between heating furnaces. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a flowchart of the hot continuous rolling roughing mill sickle bend control and determination method provided in the embodiments of the present invention;

[0055] Figure 2 This is a flowchart of the first determination step provided in an embodiment of the present invention;

[0056] Figure 3 This is a flowchart of the first pass combined with the third pass determination model provided in the embodiments of the present invention;

[0057] Figure 4 This is a system block diagram of the electronic device provided in the embodiments of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0059] First, it should be noted that in the embodiments of the present invention, the words "exemplarily," "for example," etc., are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the term "exemplarily" is intended to present the concept in a specific manner. Furthermore, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either one or the other.

[0060] First Embodiment

[0061] This embodiment provides a method for controlling and determining the sickle bend in the roughing mill of a hot continuous rolling mill. This method can be implemented by electronic equipment, which can be a terminal or a server. The execution flow of this method is as follows: Figure 1 As shown, it includes:

[0062] S1 collects strip specifications, camber adjustment amount, and quality parameters during the roughing rolling process;

[0063] Specifically, in this embodiment, the strip steel specification parameters collected by S1 include: the steel grades S1, S2, ..., S of the n strip steels before the current time node. n The thicknesses T1, T2, ..., T3 of the n strips before the current time point, in mm; the widths W1, W2, ..., W of the n strips before the current time point. n Unit: mm; Furnace numbers F1, F2, ..., F1 corresponding to the n strips of steel before the current time point. n The range of values ​​for n is determined based on the specific production line.

[0064] The sickle bend control amount includes: the value G issued for the first roll gap of n strips before the current time node. 1h G 2h ,…,G nh Unit: mm; Current strip final roll gap value G 1t G 2t ,…,G nt , unit mm.

[0065] Quality parameters include: the first exit sickle bend Z of the n strips before the current time point. 1h Z 2h ,…,Z nh Unit: mm; Z represents the final exit curve of the n strips before the current time point. 1t Z 2t ,…,Z nt , unit mm.

[0066] S2, based on the strip steel specifications, determine the real-time production mode of the current production line; wherein, the production mode includes: single-furnace production mode, dual-furnace production mode and multi-furnace production mode;

[0067] Specifically, in this embodiment, the implementation process of S2 is as follows:

[0068] S21. Calculate the number of different heating furnaces from which the furnace number data of the first n strip steel pieces were collected:

[0069] m=|{F1,F2,…,F n}|

[0070] Where |·| represents the size of the set; m is the number of different data in the furnace number of the heating furnace, and the range of m is determined according to the production on the production line.

[0071] S22. Determine the production mode of the current production process:

[0072]

[0073] Among them, the single-furnace production mode does not require further judgment, while other modes require further judgment.

[0074] S3. If the current production line is in dual-furnace or multi-furnace production mode, then determine whether there are differences between the heating furnaces based on the strip steel specifications and the sickle bend control amount.

[0075] Specifically, in this embodiment, the implementation process of S3 is as follows:

[0076] S31. Compare the steel type, thickness, and width information of the past n steel strips. If the data is consistent, proceed with the subsequent judgment; if inconsistent, end the judgment process.

[0077] S32. Calculate the absolute difference between the first roll gap values ​​for each strip steel:

[0078] ΔG=|G ih -G jh |(1≤i,j≤n,i≠j)

[0079] Wherein, ΔG is the set of differences in the first and second roll gap values ​​of the strip; |G ih -G jh | is the absolute difference between the first roll gap values ​​of the two strip steels.

[0080] S33. Determine whether differences need to be assessed between the various heating furnaces:

[0081]

[0082] Where max{ΔG} is the maximum value of the strip roll gap difference set; e is a constant with a value range of [0.2, 0.4], which is determined to be operator intervention when no judgment is required.

[0083] S34. Calculate the maximum difference in the first and second exit sickle bends of the two steel strips:

[0084] ΔZ=|max{Z 1h Z 2h ,…,Z nh}-min{Z 1h Z 2h ,…,Z nh}|

[0085] Where ΔZ is the maximum difference in the first exit sickle bend of the strip steel; {Z 1h Z 2h ,…,Z nh} represents the set of the first exit sickle bends of the first n strip steel pieces, in mm.

[0086] S35. Determine whether there are differences between the heating furnaces:

[0087]

[0088] Where c is a constant with a value range of [20, 40]. If the value does not exceed the limit, it is determined that there is no difference between the heating furnaces; if the value exceeds the limit, it is determined that there is a difference, and the next step of judgment is carried out.

[0089] S4. If there are differences between heating furnaces, determine the furnaces and directions of difference based on quality parameters.

[0090] Specifically, in this embodiment, the implementation process of S4 is as follows:

[0091] S41. Determine the specific difference furnace and difference direction for the first pass; specifically including:

[0092] S411. Calculate the product of the first exit sickle bends for each strip steel:

[0093]

[0094] Among them, Z ih Z jh These are the first and second exit sickle bends of two steel strips, in mm.

[0095] S412. Calculate the average value of the first exit sickle bend distributed on the drive side and the operating side respectively under the opposite side conditions:

[0096]

[0097] Among them, A d The average value of the first and second exit sickle bends distributed on the drive side, in mm; A o The average value of the first and second exit sickle bends distributed on the operating side, in mm; {Z 1h Z 2h ,…,Z kh {Z} represents the set of first and second exit sickle bends distributed on the drive side, in mm; 1h Z 2h ,…,Z lh} represents the set of first and second exit sickle bends distributed on the operating side, in mm.

[0098] S413. Determine the direction of the difference in the first and second exit sickle bends of the differential furnace under opposite-side conditions:

[0099]

[0100] Among them, the transmission bias is determined by the fact that the heating furnace corresponding to the first exit sickle bend on the transmission side is a differential furnace and the direction of the difference is the transmission bias; the operation bias is determined by the fact that the heating furnace corresponding to the first exit sickle bend on the operation side is a differential furnace and the direction of the difference is the operation bias.

[0101] S414. Calculate the average value of the first and second exit sickle bends under the same side conditions:

[0102]

[0103] Among them, Z ih The first exit sickle bend of the i-th steel piece, in mm.

[0104] S415. Calculate the difference between the maximum and minimum values ​​and the mean of the first exit sickle bend:

[0105]

[0106] Where, ΔZ max ΔZ is the difference between the maximum export camber and the mean, in mm. min The difference between the minimum exit camber and the mean, in mm; {Z 1h Z 2h ,…,Z nh} represents the set of the first exit sickle bends of the first n strip steel pieces, in mm.

[0107] S416. Determine the direction of the difference in the first and second exit sickle bends of the furnace under the same-side conditions:

[0108]

[0109] Among them, the maximum value is determined by the heating furnace corresponding to the maximum value of the sickle bend at the first exit, which is a differential furnace, and the differential direction is the drive side; the minimum value is determined by the heating furnace corresponding to the minimum value of the sickle bend at the first exit, which is a differential furnace, and the differential direction is the operation side.

[0110] S417. Record the first-pass difference determination result in the model as F. h The difference direction result is recorded as Q in the model. h Q h The value is 0 on the transmission side and 1 on the operation side.

[0111] S42. Repeat the first-pass determination steps for the last-pass data to determine the last-pass difference determination result; specifically: repeat S411-S416 to obtain the last-pass difference furnace determination result F. t Final pass difference direction determination result Q t .

[0112] S43. The model determination result is determined by comprehensively analyzing the results of the first and last track number determinations, specifically including:

[0113] S431. Calculate the difference in roll gap values ​​between the first and last passes for each strip steel:

[0114]

[0115] in, G represents the difference between the roll gap values ​​for the first and last passes of the i-th steel strip. ih G it These are the roll gap values ​​for the first and last passes of the i-th steel strip, respectively.

[0116] S432. Determine the final judgment result of the first and last passes of the n steel blocks before the current node:

[0117]

[0118] Where a is a constant with a value range of [0.3, 0.4]; in the absence of intervention, the judgment result of the last pass is used as the difference judgment result of the first n strips; in the case of intervention, the judgment result of the first pass is used.

[0119] After obtaining the final difference determination result, it can be used as a prerequisite for furnace division control. That is, according to the difference furnace and difference direction determined by the determination method, furnace division control is carried out for the difference furnace: if it is biased towards the operation side, the transmission tendency roll gap adjustment amount is issued; if it is biased towards the transmission side, the operation tendency roll gap adjustment amount is issued.

[0120] In summary, this embodiment provides a method for determining the control of camber in hot strip mill roughing. This method collects strip specifications, camber adjustment amounts, and quality parameters during the roughing process as production judgment data. It then sequentially judges these parameters to determine the real-time production mode, differences, different furnaces, and different directions of the production line. The results of the differences in differences, different furnaces, and different directions are integrated and output as the model's judgment result, serving as a prerequisite for furnace-specific control. This effectively solves the problem in existing technologies that control camber based on the same standard for materials from different heating furnaces, where the precondition of differences between heating furnaces is not considered, leading to unqualified camber control indicators.

[0121] Second Embodiment

[0122] This embodiment takes a hot strip mill production line as an example to illustrate in detail each step of the hot strip mill roughing bending furnace control method provided by the present invention. The specific implementation steps are as follows:

[0123] Step 1: Collect strip specifications, camber adjustment amount, and quality parameters during the roughing rolling process:

[0124] The specific specifications of the strip steel include: the steel grades S1, S2, and S3 of the three strip steels preceding the current time point; the thicknesses T1, T2, and T3 of the three strip steels preceding the current time point, in mm; the widths W1, W2, and W3 of the three strip steels preceding the current time point, in mm; and the furnace numbers F1, F2, and F3 corresponding to the three strip steels preceding the current time point.

[0125] The sickle bend control amount specifically includes: the roll gap value G for the first pass of the three strips before the current time node. 1h G 2h G 3h Unit: mm; G value issued for the third roll gap of the three strips before the current time node. 1t G 2t G 3t , unit mm.

[0126] The specific quality parameters include: the first exit sickle bend Z of the three strips before the current time node. 1h Z 2h Z 3h Unit: mm; The third exit curve (Z) of the three strip steel pieces before the current time point. 1t Z 2t Z 3t , unit mm.

[0127] Step 2: Determine the collected strip steel specifications to identify the current production mode of the production line; the production modes include: single-furnace production mode, dual-furnace production mode, and triple-furnace production mode.

[0128] Step 21: Calculate the number of different heating furnaces from which the furnace number data of the first three strip steel pieces were collected:

[0129] m = |{F1,F2,F3}|

[0130] Where |·| represents the size of the set; m is the number of different data in the furnace number of the heating furnace, and the value of m is in the range of [1,3].

[0131] Step 22: Determine the production mode of the current production process:

[0132]

[0133] Among them, the single-furnace production mode does not require further judgment, while other modes require further judgment.

[0134] Step 3: Determine the collected strip steel specifications and camber adjustment parameters, and based on the determination rules, determine whether there are differences between the heating furnaces. Specifically, this includes:

[0135] Step 31: Compare the steel type, thickness, and width information of the three steel strips from the past. If the data is consistent, proceed with the next step; otherwise, end the process.

[0136] Step 32: Calculate the absolute difference between the roll gap values ​​for the first pass of each strip steel:

[0137] ΔG=|G ih -G jh (1≤i,j≤3,i≠j)

[0138] Wherein, ΔG is the set of differences in the roll gap values ​​for the first pass of the strip steel; |G ih -G jh | is the absolute difference between the roll gap values ​​of the first pass of the two strip steels.

[0139] Step 33: Determine whether differences need to be assessed between the various heating furnaces:

[0140]

[0141] Where max{ΔG} is the maximum value of the strip roll gap difference set; e is a constant with a value of 0.3, which is determined as operator intervention when no judgment is required.

[0142] Step 34: Calculate the maximum difference in the first exit sickle bend of the two strip steel pieces:

[0143] ΔZ=|max{Z 1h Z 2h Z 3h}-min{Z 1h Z 2h Z 3h}|

[0144] Wherein, ΔZ is the maximum difference in the first exit sickle bend of the strip steel; {Z 1h Z 2h Z 3h} represents the collection of the first exit sickle bends of the first 3 strip steel pieces, in mm.

[0145] Step 35: Determine whether there are differences between the heating furnaces:

[0146]

[0147] Where c is a constant with a value of 30 mm. If the value does not exceed the limit, it is determined that there is no difference between the heating furnaces; if the value exceeds the limit, it is determined that there is a difference, and the next step of judgment is carried out.

[0148] Step 4: Assess the collected quality parameters and determine the specific difference furnace and direction for the first pass based on the difference furnace determination rules, such as... Figure 2 As shown, it specifically includes:

[0149] Step 41: Calculate the product of the first exit sickle bends for each strip steel:

[0150]

[0151] Among them, Z ih Z jh These are the first exit sickle bends of two steel strips, in mm.

[0152] Step 42: Calculate the average value of the first exit sickle bend distributed on the drive side and the operating side respectively under the opposite side conditions:

[0153]

[0154] Among them, A d The average value of the first exit sickle bend distributed on the drive side, in mm; A o The average value of the first exit sickle bend distributed on the operating side, in mm; {Z 1h Z 2h Z 3h} represents the set of first-stage exit sickle bends distributed on the drive side, in mm; {Z 1h Z 2h Z 3h} represents the first exit sickle-shaped bend distribution on the operating side, in mm.

[0155] Step 43: Determine the direction of the difference in the first exit sickle bend of the differential furnace under the opposite-side condition:

[0156]

[0157] Among them, the transmission bias is determined by the heating furnace corresponding to the first exit sickle bend on the transmission side being a differential furnace and the direction of the difference being the transmission bias; the operation bias is determined by the heating furnace corresponding to the first exit sickle bend on the operation side being a differential furnace and the direction of the difference being the operation bias.

[0158] Step 44: Calculate the average value of the first exit sickle bend under the same side conditions:

[0159]

[0160] Among them, Z ih The first exit sickle bend of the i-th steel piece, in mm.

[0161] Step 45: Calculate the differences between the maximum and minimum values ​​and the mean of the first exit sickle bend:

[0162]

[0163] Where, ΔZ max ΔZ is the difference between the maximum export camber and the mean, in mm. min The difference between the minimum exit camber and the mean, in mm; {Z 1h Z 2h Z 3h} represents the collection of the first exit sickle bends of the first 3 strip steel pieces, in mm.

[0164] Step 46: Determine the direction of the difference in the first exit sickle bend of the differential furnace under the same side conditions:

[0165]

[0166] Among them, the maximum value is determined by the heating furnace corresponding to the maximum value of the sickle bend at the first exit of the first pass, which is a differential furnace, and the differential direction is the drive side; the minimum value is determined by the heating furnace corresponding to the minimum value of the sickle bend at the first exit of the first pass, which is a differential furnace, and the differential direction is the operation side.

[0167] Step 47: The difference determination result for the first pass is recorded as F in the model. h The difference direction result is recorded as Q in the model. h .

[0168] Step 5: Repeat the judgment steps for the first pass for the third pass data to determine the difference judgment result for the third pass. Combine the judgment results from the first and third passes to determine the model judgment result, such as... Figure 3 As shown, it specifically includes:

[0169] Step 51: Repeat steps 41-46 to calculate and obtain the difference furnace determination result F for the third pass. t The result of the third pass difference direction determination Q t .

[0170] Step 52: Calculate the difference in roll gap values ​​between the first and third passes for each strip steel:

[0171]

[0172] in, G represents the difference between the roll gap values ​​for the first and third passes of the i-th strip. ih Git These are the roll gap values ​​for the first and third passes of the i-th strip, respectively.

[0173] Step 53: Determine the final judgment results for the first and third passes of the three steel pieces before the current node:

[0174]

[0175] Where a is a constant with a value of 0.3; in the absence of intervention, the result of the third pass is used as the difference determination result for the first three strips; in the case of intervention, the result of the first pass is used.

[0176] Third Embodiment

[0177] This embodiment provides an electronic device, such as... Figure 4 As shown, the electronic device includes a processor and a memory; wherein the processor and the memory can be connected via a communication bus; the memory stores at least one instruction, which is loaded and executed by the processor to implement the method of the first embodiment described above. Furthermore, the electronic device may also include a transceiver, the processor and the transceiver can be connected via a communication bus, and the transceiver is used to communicate with other devices.

[0178] Below, in conjunction with Figure 4 A detailed introduction to each component of this electronic device is provided below:

[0179] The processor is the control center of the electronic device. The electronic device may include multiple processors, each of which can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The term "processor" can refer to a single processor or a collective term for multiple processing elements. For example, a processor can be one or more central processing units (CPUs), other general-purpose processors, application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more digital signal processors (DSPs), one or more field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor can perform various functions of the electronic device by running or executing software programs stored in memory and by calling data stored in memory.

[0180] In a specific implementation, as one example, the processor may include one or more CPUs, for example... Figure 4 CPU0 and CPU1 shown are, of course, merely illustrative examples.

[0181] The memory is used to store the software program that executes the solution of the present invention, and the processor controls its execution. For specific implementation methods, please refer to the above method embodiments, which will not be repeated here.

[0182] Optionally, the memory may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory may be integrated with the processor or may exist independently, and may be accessed through the interface circuit of the electronic device (…). Figure 4 (Not shown in the image) is coupled to the processor; however, this embodiment of the invention does not impose specific limitations on this.

[0183] The transceiver may include a receiver and a transmitter. Figure 4 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function. The transceiver can be integrated with the processor or exist independently, and is connected through the interface circuit of the electronic device (…). Figure 4 (Not shown in the image) is coupled to the processor, and this embodiment of the invention does not specifically limit this.

[0184] In addition, it should be noted that, Figure 4 The structure of the electronic device shown is not intended to limit the device. Actual devices may include more or fewer components than shown, or combine certain components, or have different component arrangements. Furthermore, the technical effects achieved by this electronic device when performing the method of the first embodiment described above can be referenced to the technical effects described in the first embodiment; therefore, they will not be repeated here.

[0185] Fourth embodiment

[0186] This embodiment provides a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the method of the first embodiment described above. The computer-readable storage medium may be a ROM, random access memory, CD-ROM, magnetic tape, floppy disk, or optical data storage device, etc. The instruction stored therein can be loaded and executed by a processor in a terminal.

[0187] Furthermore, it should be noted that the present invention can be provided as a method, apparatus, or computer program product. Therefore, embodiments of the present invention can take the form of a completely or partially hardware embodiment, a completely or partially software embodiment, or an embodiment combining software and hardware aspects. Moreover, when implemented in software, embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any usable medium accessible to a computer or a data storage device such as a server or data center containing one or more sets of usable media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive (SSD).

[0188] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0189] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0190] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Additionally, the character " / " in this text generally indicates an "or" relationship between the preceding and following objects, but it can also indicate an "AND / OR" relationship. Please refer to the context for specific interpretations. "At least one" refers to one or more items, while "more than" refers to two or more items. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can be represented as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0191] Furthermore, it is understood that in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0192] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0193] In the several embodiments provided by this invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of functional modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs. Additionally, the functional units in the various embodiments of this invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0194] If the method is implemented as 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 a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0195] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. It should be pointed out that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept of the present invention, can make several improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

Claims

1. A method for controlling and determining the sickle bend in the roughing mill of a hot continuous rolling mill, characterized in that, include: Collect strip specifications, camber adjustment amount, and quality parameters during the roughing rolling process; Based on the strip steel specifications, the real-time production mode of the current production line is determined; wherein, the production mode includes: single-furnace production mode, dual-furnace production mode, and multi-furnace production mode; If the current production line is in dual-furnace or multi-furnace production mode, then based on the strip steel specifications and the camber adjustment amount, determine whether there are differences between the heating furnaces. If there are differences between heating furnaces, the furnaces and directions of difference are determined based on quality parameters. The strip steel specifications include those prior to the current time point. n The steel type, thickness, width, and corresponding furnace number of each strip in the block strip steel; The sickle-shaped control amount includes the amount before the current time node. n The first and last roll gap values ​​for each strip in the block strip steel; The quality parameters include those prior to the current time point. n The first and last exit sickle bends of each strip in the block strip steel; in, n This is a preset integer value greater than 1, and its range is determined based on the specific production line. The determination of differences between heating furnaces based on strip steel specifications and camber adjustment includes: Compare the data collected before the current time point n Are the steel grades, thicknesses, and widths of the strips in the block consistent? If the data is consistent, then calculate the data collected before the current time point. n The absolute difference between the first roll gap values ​​of each pair of strip steel blocks constitutes the set of first roll gap value differences of strip steel. If the maximum value in the set of differences between the first and second roll gaps of the strip is less than e Then, further calculate the time before the current time node that was collected. n The maximum difference in the first exit sickle bend of two strips in a block of steel. The formula is: ； in, e This is a preset constant, and its value range is [0.2, 0.4]. The data collected before the current time point n The maximum value of the first exit sickle bend in the strip steel; The data collected before the current time point n The minimum value of the first exit sickle bend in the strip steel; The data collected before the current time point n The collection of the first and second exit sickle bends in the strip steel; like Greater than c If so, then it is determined that there are differences between the heating furnaces; if Not greater than c If so, then it is determined that there is no difference between the heating furnaces; among them, c This is a preset constant, and its value range is [20, 40].

2. The hot continuous rolling mill roughing mill sickle bend control and judgment method as described in claim 1, characterized in that, The process of determining the real-time production mode of the current production line based on strip steel specifications includes: Statistics collected before the current time point n The furnace number corresponding to each strip in the block steel comes from the number of different heating furnaces. m ; like m If the value is 1, then the current production line is determined to be in single-furnace production mode. like m If the value is 2, then the current production line's real-time production mode is determined to be dual-furnace production mode. like m If the value is greater than 2, then the current production line is determined to be in multi-furnace production mode.

3. The hot continuous rolling mill roughing mill sickle bend control and judgment method as described in claim 1, characterized in that, The determination of the differential furnace and differential direction based on quality parameters includes: Based on the quality parameters, the difference furnace and difference direction of the first pass are determined, and the difference judgment result of the first pass is obtained; Based on the quality parameters, the difference furnace and difference direction of the last pass are determined, and the difference judgment result of the last pass is obtained. The final difference determination result is obtained by combining the difference determination results of the first and last passes.

4. The hot continuous rolling mill roughing mill sickle bend control and judgment method as described in claim 3, characterized in that, The determination of the difference furnace and difference direction for the first pass based on quality parameters includes: The following formula is used to determine whether the bending amount is on the same side: ； in, For the first i The first exit sickle bend of the block strip steel; For the first j The first exit sickle bend of the strip steel; If the bending amount is not on the same side, then calculate the bending amount before the current time point separately. n The average value of the first and second exit sickle bends distributed on the drive side of the strip steel. and the data collected before the current time point n The average value of the first and second exit sickle bends distributed on the operating side in the strip steel. ; Will and To make a comparison, if Greater than Then, the heating furnace corresponding to the first exit sickle bend on the transmission side is determined to be a differential furnace, and the differential direction is the transmission bias; if Not greater than If so, the heating furnace corresponding to the first exit sickle bend on the operating side is determined to be a differential furnace and the differential direction is the operating bias. If the bending amount is on the same side, then calculate the amount collected before the current time point. n The average value of the first exit sickle bend corresponding to the strip steel. Then calculate the data collected before the current time point. n The maximum value of the first exit sickle bend corresponding to the strip steel and absolute difference and the data collected before the current time point n The minimum value of the first exit sickle bend corresponding to the strip steel block and absolute difference ; Will and To make a comparison, if Greater than Then, the heating furnace corresponding to the maximum value of the first exit sickle bend is determined to be a differential furnace, and the differential direction is the drive side; if Not greater than If the minimum value of the first exit sickle bend is determined, the heating furnace corresponding to it is a differential furnace and the differential direction is the operating side.

5. The hot continuous rolling mill roughing mill sickle bend control and judgment method as described in claim 3, characterized in that, The determination of the difference furnace and difference direction in the final pass based on quality parameters includes: The following formula is used to determine whether the bending amount is on the same side: ； in, For the first i The final exit sickle bend of the strip steel; For the first j The final exit sickle bend of the strip steel; If the bending amount is not on the same side, then calculate the bending amount before the current time point separately. n The average value of the final exit sickle bend in the strip steel distributed on the drive side and the data collected before the current time point n The average value of the final exit sickle bend in the strip steel distributed on the operating side ; Will and To make a comparison, if Greater than Then, the heating furnace corresponding to the sickle-shaped exit at the last pass on the transmission side is determined to be a differential furnace, and the differential direction is the transmission bias; if Not greater than If so, the heating furnace corresponding to the sickle bend at the last exit on the operating side is determined to be a differential furnace and the differential direction is the operating bias. If the bending amount is on the same side, then calculate the amount collected before the current time point. n The average value of the final exit sickle bend corresponding to the strip steel. Then calculate the data collected before the current time point. n The maximum value of the final exit sickle bend corresponding to the strip steel and absolute difference and the data collected before the current time point n The minimum value of the final exit sickle bend corresponding to the strip steel block and absolute difference ; Will and To make a comparison, if Greater than Then, the heating furnace corresponding to the maximum value of the sickle bend at the final exit is determined to be a differential furnace, and the differential direction is the drive side; if Not greater than If the minimum value of the sickle bend at the final exit is determined, the heating furnace corresponding to it is a differential furnace and the differential direction is the operating side.

6. The hot continuous rolling mill roughing mill sickle bend control and judgment method as described in claim 3, characterized in that, Combining the difference determination results of the first and last passes, the final difference determination result is obtained, including: Calculate the absolute difference between the roll gap value issued for the first pass and the roll gap value issued for the last pass for each strip steel. If the absolute difference between the first roll gap value and the last roll gap value of all strip steel is no greater than 1 / 3... Then the result of the last pass is used as the previous result. n The difference determination result of the strip steel is used; otherwise, the determination result of the first pass is used as the previous result. n The results of the difference determination for the block strip steel; among which, a This is a preset constant, and its value range is [0.3, 0.4].

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