Hot continuous rolling rough rolling camber furnace separation control judgment method

Abstract

The invention discloses a hot continuous rolling rough rolling camber furnace separation control judgment method, and belongs to the technical field of plate strip rolling. The method comprises the steps that strip steel specification parameters, camber regulation and control quantity and quality parameters in the rough rolling process are collected; determining a real-time production mode of the current production line based on the strip steel specification parameters; wherein the production modes comprise a single-furnace production mode, a double-furnace production mode and a multi-furnace production mode; if the real-time production mode of the current production line is a double-furnace production mode or a multi-furnace production mode, whether difference exists between the heating furnaces or not is determined based on the strip steel specification parameters and the camber regulation and control amount; if difference exists between the heating furnaces, determining a difference furnace and a difference direction based on the mass parameters. By adopting the scheme of the invention, the furnace separation control judgment can be completed according to the production process data, and the furnace separation control of camber control is realized, so that the quality stability of rough rolling camber control is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate and strip rolling, and in particular to a method for determining hot continuous rolling roughing sickle bending furnace control. Background Art

[0002] During the strip rolling process, due to the inconsistent thickness and temperature of the incoming material on both sides, the difference in the rigidity of the rolling mill, the difference on both sides of the hydraulic cylinder, and the deviation of the side guide, the strip is prone to form a sickle shape during the rolling process. Therefore, the sickle control of hot strip rough rolling is of great significance to the stable operation of production, product quality and yield rate control.

[0003] At present, the control of the camber of rough rolling in industrial sites adopts the method of non-furnace control, that is, a unified standard roll gap value is issued to the incoming strip steel of multiple heating furnaces. This control method does not take into account the differences between the heating furnaces, which will lead to unqualified camber control indicators. Summary of the invention

[0004] The present invention provides a method for determining the control of the sickle bend in hot rolling roughing by furnace, so as to solve the technical problem that the existing roughing rolling sickle bend control adopts the non-furnace control method, which does not take into account the differences between the various heating furnaces, thereby causing the sickle bend control indicators to be unqualified.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] On the one hand, the present invention provides a method for determining hot rolling roughing sickle bending furnace control, comprising:

[0007] Collect strip specification parameters, camber adjustment and quality parameters during rough rolling;

[0008] Based on the strip steel specification parameters, determine the real-time production mode of the current production line; wherein the production mode includes: single-furnace production mode, double-furnace production mode and multi-furnace production mode;

[0009] If the current real-time production mode of the production line is a dual-furnace production mode or a multi-furnace production mode, then based on the strip steel specification parameters and the sickle bending control amount, determine whether there are differences between the heating furnaces;

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

[0011] Furthermore, the strip steel specification parameters include the steel type, thickness, width and corresponding heating furnace number of each strip steel in the first n strip steels at the current time node;

[0012] The sickle bending control quantity includes the first pass roll gap value and the last pass roll gap value corresponding to each strip of the n strips before the current time node;

[0013] The quality parameters include the first pass exit sickle bend and the last pass exit sickle bend corresponding to each of the n strips before the current time node;

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

[0015] Furthermore, the real-time production mode of the current production line is determined based on the strip steel specification parameters, including:

[0016] Count the number of heating furnaces m corresponding to the heating furnace numbers of the n strips collected before the current time node from different heating furnaces;

[0017] If m is equal to 1, it is determined that the real-time production mode of the current production line is the single-furnace production mode;

[0018] If m is equal to 2, it is determined that the real-time production mode of the current production line is the double-furnace production mode;

[0019] If m is greater than 2, it is determined that the real-time production mode of the current production line is a multi-furnace production mode.

[0020] Further, the determining whether there are differences between heating furnaces based on the strip specification parameters and the camber control amount includes:

[0021] Compare whether the steel type, thickness and width of each strip steel in the n strip steels collected before the current time node are consistent. If the data are consistent, calculate the absolute difference between the first-pass roll gap values ​​issued between two of the n strip steels collected before the current time node to form a set of differences in the first-pass roll gap values ​​issued for the strip steel;

[0022] If the maximum value in the set of differences in the first-pass roll gap of the strip is less than e, the maximum difference ΔZ of the first-pass exit sickle bends 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] Among them, e is a preset constant, and its value range is [0.2,0.4]; max{Z 1h ,Z 2h ,…,Z nh} is the maximum value of the first exit sickle bend in the n strips collected before the current time node; min{Z 1h ,Z 2h ,…,Z nh} is the minimum value of the first pass exit sickle camber in the n strips collected before the current time node; {Z 1h ,Z 2h ,…,Z nh} is the set of first pass exit cambers in the n strips collected before the current time node;

[0025] If ΔZ is greater than c, it is determined that there are differences between the heating furnaces; if ΔZ is not greater than c, it is determined that there are no differences between the heating furnaces; wherein c is a preset constant, and its value range is [20,40].

[0026] Further, the determining of the difference furnace and the difference direction based on the quality parameter includes:

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

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

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

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

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

[0032]

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

[0034] If the bending amount is not on the same side, the mean value A of the first pass exit sickle bending distributed on the transmission side of the n strips collected before the current time node is calculated respectively. dh , and the mean value A of the first exit sickle bend on the operating side of the n strips collected before the current time node oh ;

[0035] A dh With A oh For comparison, if A dh Greater than A oh, then the heating furnace corresponding to the first exit sickle bend distributed on the transmission side is determined to be a differential furnace and the differential direction is the transmission deviation; if A dh No more than A oh , then it is determined that the heating furnace corresponding to the first exit sickle bend distributed on the operation side is a difference furnace and the difference direction is the operation bias;

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

[0037] ΔZ hmax With ΔZ hmin For comparison, if ΔZ hmax Greater than ΔZ hmin , then it is determined that the heating furnace corresponding to the maximum value of the sickle bend at the first pass outlet is a differential furnace and the differential direction is the transmission side; if ΔZ hmax No more than ΔZ hmin , it is determined that the heating furnace corresponding to the minimum value of the sickle bend at the first pass exit is a difference furnace and the difference direction is the operating side.

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

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

[0040]

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

[0042] If the bending amount is not on the same side, the mean value A of the last exit sickle bending distributed on the transmission side of the n strips collected before the current time node is calculated respectively. dt , and the mean value A of the last exit sickle bend distributed on the operating side in the n strips collected before the current time node ot ;

[0043] A dt With A ot For comparison, if A dt Greater than A ot, then the heating furnace corresponding to the sickle bend at the last exit distributed on the transmission side is determined to be a differential furnace and the differential direction is the transmission deviation; if A dt No more than A ot , then it is determined that the heating furnace corresponding to the last exit sickle bend distributed on the operation side is a difference furnace and the difference direction is the operation bias;

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

[0045] ΔZ tmax With ΔZ tmin For comparison, if ΔZ tmax Greater than ΔZ tmin , then it is determined that the heating furnace corresponding to the maximum value of the sickle bend at the last pass outlet is a differential furnace and the differential direction is the transmission side; if ΔZ tmax No more than ΔZ tmin , it is determined that the heating furnace corresponding to the minimum value of the sickle bend at the last pass outlet is a difference furnace and the difference direction is the operating side.

[0046] Furthermore, the first pass difference determination result and the last pass difference determination result are combined to obtain the final difference determination result, including:

[0047] Calculate the absolute difference between the first pass roll gap value and the last pass roll gap value of each strip;

[0048] If the absolute difference between the first pass roll gap value and the last pass roll gap value of all strips is not greater than a, the last pass judgment result is used as the difference judgment result of the first n strips; otherwise, the first pass judgment result is used as the difference judgment result of the first n strips; where a is a preset constant, and its value range is [0.3,0.4].

[0049] On the other hand, the present invention further provides an electronic device, comprising a processor and a memory; wherein the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the above method.

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

[0051] The beneficial effects brought about by the technical solution provided by the present invention include at least:

[0052] The present invention collects the strip steel specification parameters, sickle bending control amount and quality parameters in the rough rolling process as production judgment data, and judges the collected strip steel specification parameters, sickle bending control amount and quality parameters in turn to determine the real-time production mode, difference, difference furnace and difference direction of the production line, and integrates the difference, difference furnace and difference direction judgment results as the model judgment result output as the prerequisite for the control of the furnace. This effectively solves the problem that the existing technology performs sickle bending control on the incoming materials of different heating furnaces according to the same standard, but does not consider the preconditions of differences between the heating furnaces, resulting in unqualified sickle bending control indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 It is a flow chart of a method for determining hot rolling roughing sickle bending furnace control provided by an embodiment of the present invention;

[0055] Figure 2 is a first pass determination flow chart provided by an embodiment of the present invention;

[0056] Figure 3 It is a flow chart of the first pass combined with the third pass determination model provided by an embodiment of the present invention;

[0057] Figure 4 It is a system block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

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

[0059] First of all, it should be noted that in the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplarily" is intended to present the concept in a concrete way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0060] First embodiment

[0061] This embodiment provides a method for hot rolling roughing sickle bending furnace control determination, which can be implemented by an electronic device, which can be a terminal or a server. Figure 1 As shown, including:

[0062] S1, collects strip specification parameters, sickle bending control quantity and quality parameters during rough rolling;

[0063] Specifically, in this embodiment, the strip steel specification parameters collected by S1 specifically include: the steel types S1, S2, ..., S n ; The thickness of the n strips before the current time node is T1, T2, ..., T3, in mm; The width of the n strips before the current time node is W1, W2, ..., W n , unit: mm; the heating furnace number F1, F2, ..., F corresponding to the n strips before the current time node n ; The value range of n is determined according to the specific production line.

[0064] The camber control quantity includes: the first pass roll gap value G of the n strips before the current time node 1h ,G 2h ,…,G nh , unit: mm; the 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 node 1h ,Z 2h ,…,Z nh , unit: mm; the sickle bend Z of the last exit of the n strips before the current time node 1t ,Z 2t ,…,Z nt , unit: mm.

[0066] S2, based on the strip steel specification parameters, determining the real-time production mode of the current production line; wherein the production mode includes: single-furnace production mode, double-furnace production mode and multi-furnace production mode;

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

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

[0069] m=|{F1,F2,…,F n}|

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

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

[0072]

[0073] Among them, the single furnace production mode does not require subsequent judgment, while other modes proceed to the next step of judgment.

[0074] S3, if the real-time production mode of the current production line is a dual-furnace production mode or a multi-furnace production mode, determine whether there are differences between the heating furnaces based on the strip steel specification parameters and the sickle bending control amount;

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

[0076] S31, compare the strip steel type, thickness, and width information of the past n pieces of steel, and make subsequent judgments if the data are consistent, and terminate the judgment if they are inconsistent:

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

[0078] ΔG=|G ih -G jh |(1≤i,j≤n,i≠j)

[0079] Among them, ΔG is the difference set of the first pass roll gap of the strip; |G ih -G jh ∣ is the absolute difference between the first pass roll gap values ​​of the two strips.

[0080] S33, determining whether a difference determination is required between the heating furnaces:

[0081]

[0082] Among them, 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], and it is judged as operator intervention when no judgment is required.

[0083] S34. Calculate the maximum difference in the first pass exit sickle bend of two strips:

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

[0085] Among them, ΔZ is the maximum difference of the first pass exit sickle of the strip; {Z 1h ,Z 2h ,…,Z nh} is the set of first exit sickle bends of the first n strips, unit: mm.

[0086] S35, determining whether there are differences between the heating furnaces:

[0087]

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

[0089] S4, if there are differences between the heating furnaces, determining the difference furnaces and the difference directions based on the quality parameters;

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

[0091] S41, determine the specific difference furnace and difference direction of the first pass; specifically including:

[0092] S411. Calculate the product of the first pass exit sickle bend of each strip:

[0093]

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

[0095] S412, in the case of different sides, calculate the mean value of the first exit sickle bend distributed on the transmission side and the operating side respectively:

[0096]

[0097] Among them, A d A is the average value of the first exit sickle bend distributed on the transmission side, unit: mm; o is the average value of the first exit sickle bend distributed on the operating side, in mm; {Z 1h ,Z 2h ,…,Z kh} is the set of first-pass exit sickle bends distributed on the transmission side, unit: mm; {Z 1h ,Z 2h ,…,Z lh} is the set of first-pass exit sickle bends distributed on the operating side, unit: mm.

[0098] S413. Determine the difference direction of the first pass exit sickle bend of the difference furnace in the case of different sides:

[0099]

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

[0101] S414, calculate the average value of the first exit sickle bend on the same side:

[0102]

[0103] Among them, Z ih is the first exit camber of the ith steel, in mm.

[0104] S415. Calculate the difference between the maximum value and the minimum value of the sickle bend at the first exit and the mean value respectively:

[0105]

[0106] Among them, ΔZ max ΔZ is the difference between the maximum exit sickle and the mean, in mm; min is the difference between the minimum exit sickle bend and the mean value, in mm; {Z 1h ,Z 2h ,…,Z nh} is the set of first exit sickle bends of the first n strips, unit: mm.

[0107] S416. Determine the difference direction of the first pass exit sickle bend of the difference furnace on the same side:

[0108]

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

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

[0111] S42, repeat the first pass determination step 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 , the final difference direction determination result Q t .

[0112] S43, comprehensively analyzing the first and last pass determination results to determine the model determination results, specifically including:

[0113] S431. Calculate the difference between the first pass and the last pass roll gap values ​​of each strip:

[0114]

[0115] in, is the difference between the first and last pass roll gap values ​​of the i-th steel strip, G ih , G it 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 pass of the n pieces of steel before the current node:

[0117]

[0118] Wherein, a is a constant, and its value range is [0.3, 0.4]. In the absence of intervention, the last pass judgment result is used as the difference judgment result of the first n pieces of strip steel; in the intervention case, the first pass judgment result is used.

[0119] After obtaining the final difference judgment result, it can be used as a prerequisite for furnace control, that is: according to the difference furnace and difference direction determined by the judgment method, the difference furnace is controlled separately: if it is biased towards the operation side, the transmission trend roller gap adjustment amount is issued; if it is biased towards the transmission side, the operation trend roller gap adjustment amount is issued.

[0120] In summary, this embodiment provides a method for determining the control of hot rolling roughing sickle bend by furnace. The method collects the strip specification parameters, sickle bend control amount and quality parameters in the roughing rolling process as production determination data, and sequentially determines the collected strip specification parameters, sickle bend control amount and quality parameters to determine the real-time production mode, difference, difference furnace and difference direction of the production line, and integrates the difference, difference furnace and difference direction determination results as the model determination result output as a prerequisite for furnace control. This effectively solves the problem that the existing technology performs sickle bend control on incoming materials from different heating furnaces according to the same standard, but does not consider the preconditions of differences between the heating furnaces, resulting in unqualified sickle bend control indicators.

[0121] Second embodiment

[0122] This embodiment takes a hot strip rolling production line of a steel plant as an example to illustrate in detail the various steps of the hot strip rolling rough rolling sickle bending furnace control determination method provided by the present invention. The specific implementation steps are as follows:

[0123] Step 1: Collect the strip specification parameters, camber control parameters and quality parameters during the rough rolling process:

[0124] Among them, the strip steel specification parameters specifically include: the steel types S1, S2, S3 of the first three strip steels at the current time node; the thicknesses T1, T2, T3 of the first three strip steels at the current time node, in mm; the widths W1, W2, W3 of the first three strip steels at the current time node, in mm; the heating furnace numbers F1, F2, F3 corresponding to the first three strip steels at the current time node.

[0125] The specific control quantity of sickle bending includes: the first pass roll gap value G of the first three strips before the current time node 1h ,G 2h ,G 3h , unit: mm; the third pass roll gap value G of the first three strips at the current time node 1t ,G 2t ,G 3t , unit: mm.

[0126] The quality parameters include: the first exit sickle bend Z of the first three strips at the current time node 1h ,Z 2h ,Z 3h , unit: mm; the third exit sickle bend Z of the first three strips at the current time node 1t ,Z 2t ,Z 3t , unit: mm.

[0127] Step 2: Determine the collected strip steel specification parameters to determine the real-time production mode of the current production line; wherein the production modes include: single-furnace production mode, double-furnace production mode and three-furnace production mode;

[0128] Step 21, calculate the number of different heating furnaces in the collected heating furnace number data of the first three strips:

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

[0130] Among them, |·| represents the size of the set; m is the number of different data in the heating furnace number, and the value range of m is [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 subsequent judgment, while other modes proceed to the next step of judgment.

[0134] Step 3: Determine the collected strip steel specification parameters and camber control parameters, and determine whether there are differences between the heating furnaces based on the determination rules, including:

[0135] Step 31: Compare the strip steel type, thickness and width information of the past three pieces of steel. If the data are consistent, make a subsequent judgment. If they are inconsistent, end the judgment:

[0136] Step 32, calculate the absolute difference between the first pass roll gap values ​​of each strip:

[0137] ΔG=|G ih -G jh |(1≤i,j≤3,i≠j)

[0138] Among them, ΔG is the difference set of the first pass roll gap of the strip; |G ih -G jh ∣ is the absolute difference between the first pass roll gap values ​​of the two strips.

[0139] Step 33: Determine whether a difference determination is required between the heating furnaces:

[0140]

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

[0142] Step 34, calculate the maximum difference in the first pass exit sickle bends of the two strips:

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

[0144] Among them, ΔZ is the maximum difference of the camber at the exit of the first pass of the strip; {Z 1h ,Z 2h ,Z 3h} is the set of the first exit sickle bends of the first three strips, unit: mm.

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

[0146]

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

[0148] Step 4: Determine the collected quality parameters and determine the specific difference furnace and difference direction of the first pass according to the difference furnace determination rules, such as Figure 2 As shown, specifically including:

[0149] Step 41, calculate the product of the first pass exit camber of each strip:

[0150]

[0151] Among them, Z ih , Z jh They are the first exit camber of two strips, in mm.

[0152] Step 42: In the case of different sides, the mean values ​​of the first pass exit sickle cambers distributed on the transmission side and the operating side are calculated respectively:

[0153]

[0154] Among them, A d A is the mean value of the first exit sickle bend distributed on the transmission side, in mm; o is the mean value of the first exit sickle camber distributed on the operating side, in mm; {Z 1h ,Z 2h ,Z 3h} is the set of cambers at the first exit distributed on the transmission side, in mm; {Z 1h ,Z 2h ,Z 3h} is the set of first pass exit sickle bends distributed on the operating side, unit: mm.

[0155] Step 43, determine the difference direction of the sickle bend at the first pass outlet of the difference furnace in the case of different sides:

[0156]

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

[0158] Step 44: Calculate the mean value of the first pass exit sickle bend on the same side:

[0159]

[0160] Among them, Z ih is the first exit camber of the ith steel, in mm.

[0161] Step 45, respectively calculate the difference between the maximum value and the minimum value of the sickle bend at the exit of the first pass and the mean value:

[0162]

[0163] Among them, ΔZ max ΔZ is the difference between the maximum exit sickle and the mean, in mm; min is the difference between the minimum exit sickle bend and the mean value, in mm; {Z 1h ,Z 2h ,Z 3h} is the set of the first exit sickle bends of the first three strips, unit: mm.

[0164] Step 46, determine the difference direction of the first pass exit sickle bend of the difference furnace in the same side case:

[0165]

[0166] Among them, the maximum value is determined as the heating furnace corresponding to the maximum value of the sickle bend at the first pass exit is the difference furnace, and the difference direction is the transmission side; the minimum value is determined as the heating furnace corresponding to the minimum value of the sickle bend at the first pass exit is the difference furnace, and the difference direction is the operation side.

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

[0168] Step 5: Repeat the first pass judgment step for the third pass data to determine the third pass difference judgment result, and comprehensively analyze the first and third pass judgment results to determine the model judgment result, such as Figure 3 As shown, specifically including:

[0169] Step 51, repeat steps 41 to 46 to calculate the third pass difference furnace determination result F t , the third pass difference direction determination result Q t .

[0170] Step 52, calculate the difference between the first pass and the third pass roll gap values ​​of each strip:

[0171]

[0172] in, is the difference between the roll gap values ​​of the 1st and 3rd passes of the i-th strip, G ih , Git They are the roll gap values ​​for the 1st and 3rd passes of the i-th strip respectively.

[0173] Step 53, determine the final judgment results of the first pass and the third pass of the three pieces of steel before the current node:

[0174]

[0175] Wherein, 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 judgment result of the first three strips; in the intervention case, 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, and the instruction is loaded and executed by the processor to implement the method of the first embodiment. In addition, 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] Next, combine Figure 4 The following is a detailed introduction to the various components of the electronic device:

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

[0180] In a specific implementation, as an embodiment, the processor may include one or more CPUs, such as Figure 4 The CPU0 and CPU1 shown in the figure are, of course, only exemplary.

[0181] The memory is used to store the software program for executing the solution of the present invention, and the execution is controlled by the processor. The specific implementation method can refer to the above method embodiment and will not be repeated here.

[0182] Optionally, the memory may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be integrated with the processor or exist independently and accessed through the interface circuit ( Figure 4 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0183] The transceiver may include a receiver and a transmitter ( Figure 4 The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function. The transceiver can be integrated with the processor or exist independently and communicate with the electronic device through the interface circuit ( Figure 4 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0184] In addition, it should be noted that Figure 4 The structure of the electronic device shown in the figure does not constitute a limitation on the device, and the actual device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. In addition, the technical effects achieved by the electronic device when executing the method of the first embodiment above can refer to the technical effects described in the first embodiment above, so they are not repeated here.

[0185] Fourth embodiment

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

[0187] In addition, it should be noted that the present invention can be provided as a method, an apparatus or a computer program product. Therefore, the embodiment of the present invention can be in the form of a full or partial hardware embodiment, a full or partial software embodiment or an embodiment combining software and hardware. Moreover, when implemented using software, the embodiment of the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center containing one or more available media sets. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state hard disk.

[0188] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0189] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable terminal device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0190] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements. In addition, the term "and / or" is only an association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone, wherein A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding. "At least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can be represented by: a, b, c, ab, ac, bc or abc, where a, b, c can be single or plural.

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

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

[0193] In several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of functional modules / units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0194] If the method is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0195] Finally, it should be noted that the above is only a preferred embodiment of the present invention. It should be pointed out that although the preferred embodiment of the present invention has been described, for ordinary technicians in this technical field, once the basic creative concept of the present invention is known, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the attached claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims

1. A method for determining the control of hot rolling roughing sickle bending furnace, characterized in that: include: Collect strip specification parameters, camber adjustment and quality parameters during rough rolling; Based on the strip steel specification parameters, determine the real-time production mode of the current production line; wherein the production mode includes: single-furnace production mode, double-furnace production mode and multi-furnace production mode; If the current real-time production mode of the production line is a dual-furnace production mode or a multi-furnace production mode, then based on the strip steel specification parameters and the sickle bending control amount, determine whether there are differences between the heating furnaces; If there are differences between the heating furnaces, the difference furnaces and the difference directions are determined based on the quality parameters.

2. The method for determining the hot rolling roughing sickle bending furnace control according to claim 1, characterized in that: The strip steel specification parameters include the steel type, thickness, width and corresponding heating furnace number of each strip steel in the n strip steels before the current time node; The sickle bending control quantity includes the first pass roll gap value and the last pass roll gap value corresponding to each strip of the n strips before the current time node; The quality parameters include the first pass exit sickle bend and the last pass exit sickle bend corresponding to each of the n strips before the current time node; Here, n is a preset integer value greater than 1, and its value range is determined according to the specific production line.

3. The hot rolling roughing sickle bending furnace control and determination method according to claim 2, characterized in that: The real-time production mode of the current production line is determined based on the strip steel specification parameters, including: Count the number of heating furnaces m corresponding to the heating furnace numbers of the n strips collected before the current time node from different heating furnaces; If m is equal to 1, it is determined that the real-time production mode of the current production line is the single-furnace production mode; If m is equal to 2, it is determined that the real-time production mode of the current production line is the double-furnace production mode; If m is greater than 2, it is determined that the real-time production mode of the current production line is a multi-furnace production mode.

4. The method for determining the hot rolling roughing sickle bending furnace control according to claim 2, characterized in that: The step of determining whether there are differences between heating furnaces based on the strip specification parameters and the camber control amount includes: Compare whether the steel type, thickness and width of each strip steel in the n strip steels collected before the current time node are consistent. If the data are consistent, calculate the absolute difference between the first-pass roll gap values ​​issued between two of the n strip steels collected before the current time node to form a set of differences in the first-pass roll gap values ​​issued for the strip steel; If the maximum value in the set of differences in the first-pass roll gap of the strip is less than e, the maximum difference ΔZ of the first-pass exit sickle bends of two strips among the n strips collected before the current time node is further calculated, and the formula is: ΔZ=|max{Z 1h ,WITH 2h ,…,WITH nh }-min{Z 1h ,WITH 2h ,…,WITH nh }| Among them, e is a preset constant, and its value range is [0.2,0.4]; max{Z 1h ,Z 2h ,…,Z nh } is the maximum value of the first exit sickle bend in the n strips collected before the current time node; min{Z 1h ,Z 2h ,…,Z nh } is the minimum value of the first pass exit sickle camber in the n strips collected before the current time node; {Z 1h ,Z 2h ,…,Z nh } is the set of first pass exit cambers in the n strips collected before the current time node; If ΔZ is greater than c, it is determined that there are differences between the heating furnaces; if ΔZ is not greater than c, it is determined that there are no differences between the heating furnaces; wherein c is a preset constant, and its value range is [20,40].

5. The method for determining the hot rolling roughing sickle bending furnace control according to claim 2, characterized in that: The method of determining the difference furnace and the difference direction based on the quality parameter includes: Based on the quality parameters, the difference furnace and difference direction of the first pass are determined, and the first pass difference determination result is obtained; Based on the quality parameters, the difference furnace and difference direction of the last pass are determined, and the difference determination result of the last pass is obtained; The final difference determination result is obtained by combining the first pass difference determination result and the last pass difference determination result.

6. The method for hot rolling roughing sickle bending furnace control and determination according to claim 5, characterized in that: Determining the difference furnace and difference direction of the first pass based on the quality parameters includes: Use the following formula to determine whether the bending amount is on the same side: Among them, Z ih is the first exit sickle bend of the i-th strip; Z jh is the first exit sickle bend of the j-th strip; If the bending amount is not on the same side, the mean value A of the first pass exit sickle bending distributed on the transmission side of the n strips collected before the current time node is calculated respectively. dh , and the mean value A of the first exit sickle bend on the operating side of the n strips collected before the current time node oh ; A dh With A oh For comparison, if A dh Greater than A oh , then the heating furnace corresponding to the first exit sickle bend distributed on the transmission side is determined to be a differential furnace and the differential direction is the transmission deviation; if A dh No more than A oh , then it is determined that the heating furnace corresponding to the first exit sickle bend distributed on the operation side is a difference furnace and the difference direction is the operation bias; If the bending amount is on the same side, calculate the average value A of the first exit sickle bending corresponding to the n strips collected before the current time node h ; Then calculate the maximum value of the first exit sickle bend corresponding to the n strips collected before the current time node and A h The absolute difference ΔZ hmax , and the minimum value of the first exit sickle bend corresponding to the n strips collected before the current time node and A h The absolute difference ΔZ hmin ; ΔZ hmax With ΔZ hmin For comparison, if ΔZ hmax Greater than ΔZ hmin , then it is determined that the heating furnace corresponding to the maximum value of the sickle bend at the first pass outlet is a differential furnace and the differential direction is the transmission side; if ΔZ hmax No more than ΔZ hmin , it is determined that the heating furnace corresponding to the minimum value of the sickle bend at the first pass exit is a difference furnace and the difference direction is the operating side.

7. The method for hot rolling roughing sickle bending furnace control and determination according to claim 5, characterized in that: Determining the difference furnace and difference direction of the last pass based on the quality parameters includes: Use the following formula to determine whether the bending amount is on the same side: Among them, Z it is the last exit sickle bend of the i-th strip; Z jt is the last exit sickle bend of the j-th strip; If the bending amount is not on the same side, the mean value A of the last exit sickle bending distributed on the transmission side of the n strips collected before the current time node is calculated respectively. dt , and the mean value A of the last exit sickle bend distributed on the operating side in the n strips collected before the current time node ot ; A dt With A ot For comparison, if A dt Greater than A ot , then the heating furnace corresponding to the sickle bend at the last exit distributed on the transmission side is determined to be a differential furnace and the differential direction is the transmission deviation; if A dt No more than A ot , then it is determined that the heating furnace corresponding to the last exit sickle bend distributed on the operation side is a difference furnace and the difference direction is the operation bias; If the bending amount is on the same side, calculate the average value A of the last exit sickle bending corresponding to the n strips collected before the current time node t ; Then calculate the maximum value of the last exit sickle bend corresponding to the n strips collected before the current time node and A t The absolute difference ΔZ tmax , and the minimum value of the last exit sickle bend corresponding to the n strips collected before the current time node and A t The absolute difference ΔZ tmin ; ΔZ tmax With ΔZ tmin For comparison, if ΔZ tmax Greater than ΔZ tmin , then it is determined that the heating furnace corresponding to the maximum value of the sickle bend at the last pass outlet is a differential furnace and the differential direction is the transmission side; if ΔZ tmax No more than ΔZ tmin , it is determined that the heating furnace corresponding to the minimum value of the sickle bend at the last pass outlet is a difference furnace and the difference direction is the operating side.

8. The method for hot rolling roughing sickle bending furnace control and determination according to claim 5, characterized in that: Combining the first pass difference determination result and the last pass difference determination result, the final difference determination result is obtained, including: Calculate the absolute difference between the first pass roll gap value and the last pass roll gap value of each strip; If the absolute difference between the first pass roll gap value and the last pass roll gap value of all strips is not greater than a, the last pass judgment result is used as the difference judgment result of the first n strips; otherwise, the first pass judgment result is used as the difference judgment result of the first n strips; where a is a preset constant, and its value range is [0.3,0.4].

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