Strip tail section control method and device based on rolling force difference data

Abstract

The present application relates to the technical field of intelligent steel production application, especially to a strip tail section control method and device based on rolling force difference data.A strip tail section control method based on rolling force difference data includes: collecting field operation side data and transmission side data for division to obtain reference section data, full output section data and one-way output section data; calculating according to the reference section data to obtain a rolling force difference reference value; determining the roll gap leveling value direction according to the full output section data, and determining whether the roll gap leveling operation is issued according to the one-way output section data.The strip tail section is controlled.The present application is a high-efficiency and stable finishing strip tail section control method based on rolling force difference data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent steel production and application, in particular to a strip tail section control method and device based on rolling force difference data. BACKGROUND

[0002] Hot-rolled strip steel is an important steel product and is widely used in various fields. When a hot continuous rolling production line is rolling thin-gauge products, due to the loss of tension of the strip tail when the upstream stand is throwing the strip, etc., the light causes the tail of the finishing rolled strip to run off and be rolled into pieces, etc., which causes scratches on the finishing work roll or causes the rolled strip pieces to enter the rolling mill and cause the steel to be stacked, which affects the stability and safety of subsequent rolling, and further affects the production progress. Since the strip tail passes through the rolling mill very quickly, the time left for control is very limited, and the stability of the strip tail during rolling is a major difficulty that cannot be avoided in the current hot continuous rolling production, and seeking effective process and control means to control the tail throwing has been the direction of efforts in the hot rolling field.

[0003] The process changes involved in the rolling process of the tail of the hot-rolled strip are extremely complex, including: tail tension changes, tail thickness changes, tail shape changes, load roll gap changes, etc. And the main factors affecting the load roll gap are rolling load, bending roll force, roll thermal expansion, and roll wear, etc.

[0004] When the tail of the thin-gauge strip is thrown off and rolled into pieces, the site needs to stop rolling in time to check whether the work roll surface is damaged, and if the work roll surface is damaged, it needs to be replaced in time to avoid the production of the subsequent strip surface with roll mark quality defects. The existing control system has no roll gap segmented leveling control method for the rolling force difference on both sides of the finishing rolling, and can only rely on the operator to adjust the single-sided roll gap of the downstream stand in advance according to the actual deviation of the strip tail when the upstream stand is throwing the strip. The problem of not timely manual adjustment or incorrect roll gap deviation adjustment direction often occurs, which leads to many accidents of thin-gauge strip being thrown off and rolled into pieces, and seriously affects the rolling stability and the quality of the strip product.

[0005] In the prior art, there is a lack of an efficient and stable finishing strip tail section control method based on rolling force difference data. SUMMARY

[0006] The embodiment of the present application provides a strip tail section control method and device based on rolling force difference data. The technical solution is as follows:

[0007] On the one hand, a strip tail section control method based on rolling force difference data is provided, which is realized by an electronic device, and the method comprises:

[0008] Collecting the field operation side data and the transmission side data to obtain rolling force difference data; dividing the rolling force difference data to obtain reference section data, full output section data, and one-way output section data;

[0009] calculating a rolling force difference reference value according to the reference section data;

[0010] calculating a first roll gap leveling issuing direction according to the full output section data and the rolling force difference reference value;

[0011] calculating a second roll gap leveling issuing direction according to the one-way output section data and the rolling force difference reference value;

[0012] performing consistency judgment according to the first roll gap leveling issuing direction and the second roll gap leveling issuing direction to obtain a direction consistency judgment result; and controlling the tail of the strip according to the direction consistency judgment result.

[0013] Optionally, the dividing the rolling force difference data to obtain the reference section data, the full output section data and the one-way output section data comprises:

[0014] According to the rolling force difference data, for the F1 stand, the F7 biting steel to the flying shear tail is the reference section data; the flying shear tail to the edger is the full output section data; and the edger to the F1 tail is the one-way output section data.

[0015] According to the rolling force difference data, for the F2 stand, the flying shear tail to the edger is the reference section data; the edger to the F1 tail is the full output section data; and the F1 tail to the F2 tail is the one-way output section data.

[0016] According to the rolling force difference data, for the F3 stand, the edger to the F1 tail is the reference section data; the F1 tail to the F2 tail is the full output section data; and the F2 tail to the F3 tail is the one-way output section data.

[0017] According to the rolling force difference data, for the F4 stand, the F1 tail to the F2 tail is the reference section data; the F2 tail to the F3 tail is the full output section data; and the F3 tail to the F4 tail is the one-way output section data.

[0018] According to the rolling force difference data, for the F5 stand, the F2 tail to the F3 tail is the reference section data; the F3 tail to the F4 tail is the full output section data; and the F4 tail to the F5 tail is the one-way output section data.

[0019] According to the rolling force difference data, for the F6 stand, the F3 tail to the F4 tail is the reference section data; the F4 tail to the F5 tail is the full output section data; and the F5 tail to the F6 tail is the one-way output section data.

[0020] According to the rolling force difference data, for the F7 stand, the F4 cast steel to the F5 cast steel is the reference section data; the F5 cast steel to the F6 cast steel is the full output section data; and the F6 cast steel to the F7 cast steel is the one-way output section data.

[0021] Optionally, the calculation according to the full output section data and the rolling force difference reference value obtains a first roll gap leveling issuing direction, including:

[0022] According to the full output section data and the rolling force difference reference value, a first roll gap leveling value is obtained.

[0023] According to the first roll gap leveling value, a first roll gap leveling issuing direction is obtained.

[0024] Optionally, the calculation according to the one-way output section data and the rolling force difference reference value obtains a second roll gap leveling issuing direction, including:

[0025] According to the one-way output section data and the rolling force difference reference value, a second roll gap leveling value is obtained.

[0026] According to the second roll gap leveling value, a second roll gap leveling issuing direction is obtained.

[0027] Optionally, the control of the strip tail according to the direction consistency judgment result includes:

[0028] When the direction consistency judgment result is consistent, the first roll gap leveling issuing direction is used for roll gap leveling operation.

[0029] When the direction consistency judgment result is inconsistent, no roll gap leveling operation is performed.

[0030] On the other hand, a strip tail section control device based on rolling force difference data is provided, which is applied to the strip tail section control method based on rolling force difference data, and the device includes:

[0031] A data division module is configured to collect field operation side data and transmission side data to obtain rolling force difference data, and divide the rolling force difference data to obtain reference section data, full output section data and one-way output section data.

[0032] A reference value calculation module is configured to calculate the rolling force difference reference value according to the reference section data.

[0033] A first issuing direction calculation module is configured to calculate a first roll gap leveling issuing direction according to the full output section data and the rolling force difference reference value.

[0034] A second issuing direction calculation module is configured to calculate a second roll gap leveling issuing direction according to the single-direction output section data and the roll force difference reference value.

[0035] A strip tail control module is configured to make a consistency judgment according to the first roll gap leveling issuing direction and the second roll gap leveling issuing direction, and obtain a direction consistency judgment result; and control the strip tail according to the direction consistency judgment result.

[0036] Optionally, the data division module is further configured to:

[0037] According to the roll force difference data, for the F1 rack, the F7 bite steel to the flying shear tail is the reference section data; the flying shear tail to the edger is the full output section data; and the edger to the F1 flying shear is the single-direction output section data.

[0038] According to the roll force difference data, for the F2 rack, the flying shear tail to the edger is the reference section data; the edger to the F1 flying shear is the full output section data; and the F1 flying shear to the F2 flying shear is the single-direction output section data.

[0039] According to the roll force difference data, for the F3 rack, the edger to the F1 flying shear is the reference section data; the F1 flying shear to the F2 flying shear is the full output section data; and the F2 flying shear to the F3 flying shear is the single-direction output section data.

[0040] According to the roll force difference data, for the F4 rack, the F1 flying shear to the F2 flying shear is the reference section data; the F2 flying shear to the F3 flying shear is the full output section data; and the F3 flying shear to the F4 flying shear is the single-direction output section data.

[0041] According to the roll force difference data, for the F5 rack, the F2 flying shear to the F3 flying shear is the reference section data; the F3 flying shear to the F4 flying shear is the full output section data; and the F4 flying shear to the F5 flying shear is the single-direction output section data.

[0042] According to the roll force difference data, for the F6 rack, the F3 flying shear to the F4 flying shear is the reference section data; the F4 flying shear to the F5 flying shear is the full output section data; and the F5 flying shear to the F6 flying shear is the single-direction output section data.

[0043] According to the roll force difference data, for the F7 rack, the F4 flying shear to the F5 flying shear is the reference section data; the F5 flying shear to the F6 flying shear is the full output section data; and the F6 flying shear to the F7 flying shear is the single-direction output section data.

[0044] Optionally, the first issuing direction calculation module is further configured to:

[0045] calculate a first roll gap leveling value according to the full output section data and the roll force difference reference value.

[0046] According to the first roll gap leveling value, a first roll gap leveling issuing direction is obtained.

[0047] Optionally, the second issuing direction calculation module is further used for:

[0048] According to the single-direction output segment data and the rolling force difference reference value, a second roll gap leveling value is calculated;

[0049] According to the second roll gap leveling value, a second roll gap leveling issuing direction is obtained.

[0050] Optionally, the strip tail control module is further used for:

[0051] When the direction consistency judgment result is consistent, a roll gap leveling operation is performed according to the first roll gap leveling issuing direction;

[0052] When the direction consistency judgment result is inconsistent, no roll gap leveling operation is performed.

[0053] In another aspect, an electronic device is provided, which includes a processor and a memory, the memory having stored therein at least one instruction, the at least one instruction being loaded and executed by the processor to implement the above-described strip tail section control method based on rolling force difference data.

[0054] In another aspect, a computer-readable storage medium is provided, the storage medium having stored therein at least one instruction, the at least one instruction being loaded and executed by a processor to implement the above-described strip tail section control method based on rolling force difference data.

[0055] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0056] The present application provides a strip tail section control method based on rolling force difference data, which adjusts the strip tail by the roll gap leveling issuing direction of the single-direction output segment data and the full output segment data through the segmented processing of the entire rolling force difference value data. The method avoids repeated and ineffective leveling operations, realizes more efficient leveling, ensures the deviation of the hot-rolled strip in the rolling process within the allowable range, solves the problem of deviation and tail throwing in the rolling process of the strip tail, and improves the rolling stability of the strip tail. The present application is an efficient and stable strip tail section control method based on rolling force difference data. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0058] Figure 1 is a strip tail section control method flow chart based on rolling force difference data provided by the embodiments of the present application;

[0059] Figure 2 is a hot continuous rolling production line schematic diagram provided by the embodiments of the present application;

[0060] Figure 3 is a strip tail section control device block diagram based on rolling force difference data provided by the embodiments of the present application;

[0061] Figure 4 is a structural schematic diagram of an electronic device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and advantages of the present application more clear, the following will be described in detail with the drawings and specific embodiments.

[0063] The embodiments of the present application provide a strip tail section control method based on rolling force difference data, which can be realized by an electronic device, which can be a terminal or a server. As shown in a strip tail section control method flow chart based on rolling force difference data, the processing flow of the method can include the following steps: Figure 1

[0064] S1, collecting field operation side data and transmission side data to obtain rolling force difference data; dividing the rolling force difference data to obtain reference section data, full output section data and one-way output section data.

[0065] Optionally, dividing the rolling force difference data to obtain reference section data, full output section data and one-way output section data includes:

[0066] According to the rolling force difference data, for F1 rack, F7 bite steel to flying shear tail is reference section data; flying shear tail to vertical roll throw steel is full output section data; vertical roll throw steel to F1 throw steel is one-way output section data;

[0067] According to the rolling force difference data, for F2 rack, flying shear tail to vertical roll throw steel is reference section data; vertical roll throw steel to F1 throw steel is full output section data; F1 throw steel to F2 throw steel is one-way output section data;

[0068] ​According to the rolling force difference data, for the F3 stand, the vertical roll steel casting to the F1 stand is the datum section data; the F1 stand to the F2 stand is the full output section data; and the F2 stand to the F3 stand is the one-way output section data.

[0069] According to the rolling force difference data, for the F4 stand, the F1 stand to the F2 stand is the datum section data; the F2 stand to the F3 stand is the full output section data; and the F3 stand to the F4 stand is the one-way output section data.

[0070] According to the rolling force difference data, for the F5 stand, the F2 stand to the F3 stand is the datum section data; the F3 stand to the F4 stand is the full output section data; and the F4 stand to the F5 stand is the one-way output section data.

[0071] According to the rolling force difference data, for the F6 stand, the F3 stand to the F4 stand is the datum section data; the F4 stand to the F5 stand is the full output section data; and the F5 stand to the F6 stand is the one-way output section data.

[0072] According to the rolling force difference data, for the F7 stand, the F4 stand to the F5 stand is the datum section data; the F5 stand to the F6 stand is the full output section data; and the F6 stand to the F7 stand is the one-way output section data.

[0073] In a feasible implementation manner, as shown in Figure 2 As shown in FIG. 1, which is a schematic diagram of a hot continuous rolling production line, in the present application, the rolling force difference data of the field operation side and the transmission side are obtained by reading the control end PLC, and the rolling force difference control whole-process data are divided into datum section data, full output section data and one-way output section data according to Table 1 (the steel casting signal table between stands), and the specific section division mode of each stand is shown in Table 1:

[0074] Table 1

[0075]

[0076] S2, the rolling force difference datum value is obtained by calculation according to the datum section data.

[0077] In a feasible implementation manner, when the corresponding stand receives the starting signal, that is, the signal entering the datum section, the real-time rolling force difference data of the two sides of the work roll are obtained through the server communication, when the datum section termination signal is received, the data taking is stopped, and after filtering the noise points and abnormal points, the rolling force difference datum value of the datum section is calculated.

[0078] According to the rolling force difference historical data table of each stand in the field, the rolling force difference data output range of the datum section is set as ±500 KN, and if the rolling force difference value outside the range appears, it indicates that noise points or steel casting occurs, and the data is automatically discarded for data protection.

[0079] The rolling force difference average value of the datum section is ΔPA The mathematical expression of the rolling force difference reference value is shown in the following formula (1):

[0080]

[0081] wherein, ∑ΔP Am is the total sum of the rolling force difference values on both sides of the work roll after filtering out the noise points and abnormal points in the reference section, with the unit of KN; m is the total number of the rolling force difference values on both sides of the work roll after filtering out the noise points and abnormal points in the reference section, which is obtained through the communication server and is dimensionless.

[0082] The rolling force reference value is obtained through direct communication as 178 KN.

[0083] S3, calculating the first roll gap leveling issuing direction according to the full output section data and the rolling force difference reference value.

[0084] Optionally, the first roll gap leveling issuing direction is obtained by calculating the full output section data and the rolling force difference reference value, comprising:

[0085] calculating the first roll gap leveling value according to the full output section data and the rolling force difference reference value;

[0086] obtaining the first roll gap leveling issuing direction according to the first roll gap leveling value.

[0087] In a feasible implementation, when the full output section triggering signal is received, the rolling force difference data corresponding to the rack is stored in an array, and the data of every 100 ms is stored in a group and the average value is taken. The change amount of the average values of the rolling force difference of the two groups before and after the calculation and the change amount of the roll gap leveling value are calculated and issued, and the roll gap leveling value of each time is accumulated to determine the full output section total roll gap leveling value issuing direction. The specific data is shown in Table 2 (rolling force difference value table of full output section).

[0088] Table 2

[0089]

[0090] The average value of the rolling force difference of each group of the full output section is ΔP Bl The mathematical expression of the average value of the rolling force difference of the full output section is shown in the following formula (2):

[0091]

[0092] wherein, ∑ΔP Bk is the total sum of the rolling force difference values of the work roll in the kth 100 ms, with the unit of KN; k is the total number of the rolling force difference values of the work roll in every 100 ms, which is dimensionless. The data in Table 2 is used to calculate that ΔP B1 = 198 N.

[0093] The change amount of the average value of the rolling force difference of each group of the full output section is ΔP'Bl The mathematical expression of the change amount of the rolling force difference average value of the full output section is shown in the following formula (3):

[0094] ΔP' Bl = ΔP B(l+1) - ΔP Bl (3)

[0095] wherein, ΔP B(l+1) is the rolling force difference average value of the (l+1)th group of work rolls, with the unit of KN; ΔP Bl is the rolling force difference average value of the lth group of work rolls, with the unit of KN; ΔP B1 = ΔP A . The calculation result is ΔP' B1 = 20N.

[0096] The change amount ΔS i of the roll gap leveling value of each group of F iB stands is the mathematical expression of the change amount of the roll gap leveling value, which is shown in the following formula (4):

[0097]

[0098] wherein, K w is the strip width layer coefficient, which is obtained according to the finite element simulation and has a value of 0.5 and is dimensionless; K h is the strip thickness layer coefficient, which is obtained according to the finite element simulation and has a value of 0.6 and is dimensionless; K s is the stand acting deformation resistance coefficient, which is obtained from the data table of the experience value and the weight coefficient of each stand and has a value of 0.3 and is dimensionless; ΔP' iBl is the change amount of the rolling force difference average value of each group of F i stands in the full output section, with the unit of KN, wherein i is the stand number and can be 1, 2, 3, 4, 5, 6, 7, and l is the lth average value; M i is the rolling mill stiffness of the ith stand, with a value of 100 and the unit of KN / mm. The calculation result is Δs 1B = 0.018mm.

[0099] The cumulative total of the roll gap leveling value change amount of the full output section is S B , and the mathematical expression of the cumulative total of the roll gap leveling value change amount of the full output section is shown in the following formula (5):

[0100] S B =∑ΔS iBl (5)

[0101] wherein, ∑ΔS iBl is the cumulative total of the roll gap leveling value of the full output section, with the unit of mm; and if S BIf S is greater than zero, it is considered that the strip is running to the driving side, if S B If S is less than zero, it is considered that the strip is running to the operating side. Through calculation, the total leveling value S B =0.11 is greater than zero, indicating that the strip is running to the driving side.

[0102] According to the total sum of the changes of the roll gap leveling value of the full output section, the first roll gap leveling issuing direction is obtained.

[0103] S4, according to the one-way output section data and the rolling force difference reference value, the second roll gap leveling issuing direction is obtained.

[0104] Optionally, according to the one-way output section data and the rolling force difference reference value, the second roll gap leveling issuing direction is obtained, comprising:

[0105] According to the one-way output section data and the rolling force difference reference value, the second roll gap leveling value is obtained.

[0106] According to the second roll gap leveling value, the second roll gap leveling issuing direction is obtained.

[0107] In a feasible implementation manner,

[0108] The rolling force difference average value of the one-way output section is calculated every 100 ms, and the roll gap leveling value is calculated according to the rolling force difference average value change data of Table 3 (the rolling force difference value table of the one-way output section), and the rolling force difference average value of each group F i The roll gap leveling value ΔS iC of the mill is calculated every time in the one-way output section, and the process is the same as S3, which will not be repeated here.

[0109] Table 3

[0110]

[0111]

[0112] The rolling force difference average value of each group of the one-way output section is ΔP Cl , and the mathematical expression of the rolling force difference average value of the one-way output section is shown in the following formula (6):

[0113]

[0114] In the formula, ∑ΔP Ck is the total sum of the working roll rolling force difference values within the kth 100 ms, and the unit is KN; k is the total number of working roll rolling force difference values within every 100 ms, and is dimensionless. According to the data in Table 3, ΔP C1 =227N, and ΔP C2 =205N.

[0115] The change in the average rolling force difference of each group in the unidirectional output section is ΔP′ Cl The mathematical expression for the average change in rolling force difference in the unidirectional output section is shown in equation (7) below:

[0116] ΔP′ Cl =ΔPC (l+1) -ΔP Cl (7)

[0117] Wherein, ΔP C(l+1) ΔP is the average rolling force difference of the work rolls in group l+1, in kN. Cl The average rolling force difference of the l-th group of work rolls is expressed in kN; ΔP′ is calculated. C1 = -22N.

[0118] Each group F i The change in roll gap leveling value ΔS issued by the frame in each unidirectional output section iC As shown in equation (8):

[0119]

[0120] Among them, K w K represents the strip width layer coefficient, obtained from finite element simulation, with a value of 0.5, dimensionless; h K represents the strip thickness layer coefficient, obtained from finite element simulation, with a value of 0.6, dimensionless. s The deformation resistance coefficient of the frame is obtained from the empirical values ​​and weighting coefficient data table of each frame, and is taken as 0.3, which is dimensionless.

[0121] ΔP′ iCl For F i The change in the average rolling force difference of each group in the unidirectional output section of the stand, in kN, where i is the stand number (1, 2, 3, 4, 5, 6, 7) and l is the average value of the lth group.

[0122] M i Let be the mill stiffness of the i-th stand, taken as 100, in kN / mm. Then, Δs is calculated. 1C = -0.0198mm, less than zero.

[0123] The second roll gap leveling direction is obtained by summing up the changes in the unidirectional output section roll gap leveling value.

[0124] S5. Make a consistency judgment based on the first roll gap leveling and the second roll gap leveling and the resulting direction consistency judgment; control the tail of the strip based on the direction consistency judgment result.

[0125] Optionally, based on the result of the directional consistency judgment, the tail end of the strip is controlled, including:

[0126] When the direction consistency judgment result is consistent, the roll gap leveling operation is performed according to the first roll gap leveling issuing direction;

[0127] When the direction consistency judgment result is inconsistent, the roll gap leveling operation is not performed.

[0128] In an available implementation, in the present application, when the issuing direction of the roll gap leveling value of the unidirectional output section and the full output section is consistent, the leveling value is issued, each stand is leveled, and each stand deviation control adjustment is performed, otherwise the leveling value is not issued, and the roll gap leveling operation is not performed.

[0129] If the output direction of the unidirectional output section is opposite to that of the full output section for three times in succession, it is indicated that the rolling force fluctuation is opposite to the roll gap leveling trend, and the roll gap leveling value of this time is issued.

[0130] The present application provides a strip tail section control method based on rolling force difference data, which adjusts the strip tail through the roll gap leveling issuing direction of the unidirectional output section data and the full output section data by segmenting the entire rolling force difference data. The method avoids repeated and ineffective leveling operations, realizes more efficient leveling, ensures that the deviation of the hot-rolled strip during rolling is within the allowable range, solves the problem of deviation and tail throwing during strip tail rolling, and improves the stability of strip tail rolling. The present application is an efficient and stable strip tail section control method based on rolling force difference data.

[0131] Figure 3 is a strip tail section control device block diagram based on rolling force difference data according to an example embodiment. Referring to Figure 3 , the device comprises:

[0132] The data division module 310 is configured to collect field operation side data and transmission side data to obtain rolling force difference data, and divide the rolling force difference data to obtain reference section data, full output section data and unidirectional output section data.

[0133] The reference value calculation module 320 is configured to calculate the rolling force difference reference value according to the reference section data.

[0134] The first issuing direction calculation module 330 is configured to calculate the first roll gap leveling issuing direction according to the full output section data and the rolling force difference reference value.

[0135] The second issuing direction calculation module 340 is configured to calculate the second roll gap leveling issuing direction according to the unidirectional output section data and the rolling force difference reference value.

[0136] The strip tail control module 350 is configured to make consistency judgment according to the first roll gap leveling issuing direction and the second roll gap leveling issuing direction, and obtain a direction consistency judgment result; and control the strip tail according to the direction consistency judgment result.

[0137] Optionally, the data division module 310 is further configured to:

[0138] According to the rolling force difference data, for the F1 rack, the F7 biting steel to the flying shear tail is the reference segment data; the flying shear tail to the edger roll is the full output segment data; and the edger roll to the F1 is the one-way output segment data.

[0139] According to the rolling force difference data, for the F2 rack, the flying shear tail to the edger roll is the reference segment data; the edger roll to the F1 is the full output segment data; and the F1 to the F2 is the one-way output segment data.

[0140] According to the rolling force difference data, for the F3 rack, the edger roll to the F1 is the reference segment data; the F1 to the F2 is the full output segment data; and the F2 to the F3 is the one-way output segment data.

[0141] According to the rolling force difference data, for the F4 rack, the F1 to the F2 is the reference segment data; the F2 to the F3 is the full output segment data; and the F3 to the F4 is the one-way output segment data.

[0142] According to the rolling force difference data, for the F5 rack, the F2 to the F3 is the reference segment data; the F3 to the F4 is the full output segment data; and the F4 to the F5 is the one-way output segment data.

[0143] According to the rolling force difference data, for the F6 rack, the F3 to the F4 is the reference segment data; the F4 to the F5 is the full output segment data; and the F5 to the F6 is the one-way output segment data.

[0144] According to the rolling force difference data, for the F7 rack, the F4 to the F5 is the reference segment data; the F5 to the F6 is the full output segment data; and the F6 to the F7 is the one-way output segment data.

[0145] Optionally, the first issuing direction calculation module 330 is further configured to:

[0146] The first roll gap leveling value is calculated according to the full output segment data and the rolling force difference reference value.

[0147] The first roll gap leveling issuing direction is obtained according to the first roll gap leveling value.

[0148] Optionally, the second issuing direction calculation module 340 is further configured to:

[0149] The second roll gap adjustment value is calculated according to the unidirectional output segment data and the rolling force difference reference value;

[0150] The second roll gap adjustment value is calculated according to the unidirectional output segment data and the rolling force difference reference value;

[0151] Optionally, the strip tail control module 350 is further used for:

[0152] When the direction consistency judgment result is consistent, the roll gap adjustment operation is performed according to the first roll gap adjustment issuing direction;

[0153] When the direction consistency judgment result is inconsistent, the roll gap adjustment operation is not performed.

[0154] The present application provides a kind of based on rolling force difference data's strip tail section control method, by the way of segment processing to entire rolling force difference value data, according to the roll gap adjustment issuing direction of unidirectional output segment data and full output segment data, the adjustment of strip tail is carried out.It avoids repeated and invalid adjustment operation, realizes more efficient adjustment, guarantees the deviation of hot-rolled strip in the rolling process in the allowable range fluctuation, solves the deviation of strip tail in the rolling process and the problem of tail throwing, improves the stability of strip tail rolling.The present application is a kind of based on rolling force difference data's efficient, stable and precise strip tail section control method.

[0155] Figure 4 It is a kind of structure schematic diagram of electronic equipment 400 provided by the embodiment of the present application, and the electronic equipment 400 can be greatly different due to configuration or performance, and can include one or more processors (central processing units, CPU) 401 and one or more memories 402, wherein the memory 402 stores at least one instruction, and the at least one instruction is loaded and executed by the processor 401 to realize the steps of the above-mentioned one kind of based on rolling force difference data's strip tail section control method.

[0156] In exemplary embodiments, a computer readable storage medium, such as a memory including instructions, is also provided, which can be executed by a processor in a terminal to complete the above-mentioned one kind of based on rolling force difference data's strip tail section control method.For example, the computer readable storage medium can be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk and optical data storage device, etc.

[0157] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program to instruct related hardware, and the program can be stored in a computer readable storage medium, and the above-mentioned storage medium can be read-only memory, disk or optical disk, etc.

[0158] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for segmented control of strip tail section based on rolling force difference data, characterized in that, The method includes: Data from the on-site operation side and transmission side are collected to obtain rolling force difference data; the rolling force difference data is divided to obtain reference segment data, full output segment data and unidirectional output segment data; The step of dividing the rolling force difference data to obtain reference segment data, full output segment data, and unidirectional output segment data includes: Based on the rolling force difference data, for the F1 stand, the data from F7 biting the steel to the flying shear tail is the baseline segment data; the data from the flying shear tail to the vertical roll throwing the steel is the full output segment data; and the data from the vertical roll throwing the steel to F1 throwing the steel is the unidirectional output segment data. Based on the rolling force difference data, for the F2 stand, the data from the flying shear tail to the vertical roll steel throwing is the baseline section data; the data from the vertical roll steel throwing to the F1 steel throwing is the full output section data; and the data from the F1 steel throwing to the F2 steel throwing is the unidirectional output section data. Based on the rolling force difference data, for the F3 stand, the data from the vertical roll throwing to the F1 throwing is the baseline section data; the data from the F1 throwing to the F2 throwing is the full output section data; and the data from the F2 throwing to the F3 throwing is the unidirectional output section data. Based on the rolling force difference data, for the F4 stand, the data from F1 to F2 is the baseline section; the data from F2 to F3 is the full output section; and the data from F3 to F4 is the unidirectional output section. Based on the rolling force difference data, for the F5 stand, the data from F2 to F3 is the baseline section; the data from F3 to F4 is the full output section; and the data from F4 to F5 is the unidirectional output section. Based on the rolling force difference data, for the F6 stand, the data from F3 to F4 is the baseline section; the data from F4 to F5 is the full output section; and the data from F5 to F6 is the unidirectional output section. Based on the rolling force difference data, for the F7 stand, the data from F4 to F5 is the baseline section; the data from F5 to F6 is the full output section; and the data from F6 to F7 is the unidirectional output section. The rolling force difference benchmark value is obtained by calculation based on the benchmark segment data. The first roll gap leveling direction is calculated based on the full output section data and the rolling force difference reference value. The second roll gap leveling direction is calculated based on the unidirectional output segment data and the rolling force difference reference value. Consistency judgment is made based on the first roll gap leveling and the second roll gap leveling and the resulting direction consistency judgment result; the tail end of the strip is controlled based on the direction consistency judgment result.

2. The strip tail section control method based on rolling force difference data according to claim 1, characterized in that, The step of calculating the first roll gap leveling direction based on the full output segment data and the rolling force difference reference value includes: The first roll gap leveling value is calculated based on the full output section data and the rolling force difference reference value. The first roll gap leveling direction is obtained based on the first roll gap leveling value.

3. The strip tail section control method based on rolling force difference data according to claim 1, characterized in that, The step of calculating the second roll gap leveling direction based on the unidirectional output segment data and the rolling force difference reference value includes: The second roll gap leveling value is calculated based on the unidirectional output section data and the rolling force difference reference value. The second roll gap leveling direction is obtained based on the second roll gap leveling value.

4. The strip tail section control method based on rolling force difference data according to claim 1, characterized in that, The step of controlling the tail of the strip based on the direction consistency judgment result includes: When the direction consistency judgment result is consistent, the roll gap leveling operation is performed according to the first roll gap leveling direction. When the direction consistency judgment result is inconsistent, the roll gap leveling operation is not performed.

5. A strip tail section control device based on rolling force difference data, characterized in that, The device includes: The data segmentation module is used to collect on-site operation side data and transmission side data to obtain rolling force difference data; the rolling force difference data is segmented to obtain reference segment data, full output segment data and unidirectional output segment data; The data partitioning module is further configured to: Based on the rolling force difference data, for the F1 stand, the data from F7 biting the steel to the flying shear tail is the baseline segment data; the data from the flying shear tail to the vertical roll throwing the steel is the full output segment data; and the data from the vertical roll throwing the steel to F1 throwing the steel is the unidirectional output segment data. Based on the rolling force difference data, for the F2 stand, the data from the flying shear tail to the vertical roll steel throwing is the baseline section data; the data from the vertical roll steel throwing to the F1 steel throwing is the full output section data; and the data from the F1 steel throwing to the F2 steel throwing is the unidirectional output section data. Based on the rolling force difference data, for the F3 stand, the data from the vertical roll throwing to the F1 throwing is the baseline section data; the data from the F1 throwing to the F2 throwing is the full output section data; and the data from the F2 throwing to the F3 throwing is the unidirectional output section data. Based on the rolling force difference data, for the F4 stand, the data from F1 to F2 is the baseline section; the data from F2 to F3 is the full output section; and the data from F3 to F4 is the unidirectional output section. Based on the rolling force difference data, for the F5 stand, the data from F2 to F3 is the baseline section; the data from F3 to F4 is the full output section; and the data from F4 to F5 is the unidirectional output section. Based on the rolling force difference data, for the F6 stand, the data from F3 to F4 is the baseline section; the data from F4 to F5 is the full output section; and the data from F5 to F6 is the unidirectional output section. Based on the rolling force difference data, for the F7 stand, the data from F4 to F5 is the baseline section; the data from F5 to F6 is the full output section; and the data from F6 to F7 is the unidirectional output section. The reference value calculation module is used to calculate the rolling force difference reference value based on the reference segment data; The first delivery direction calculation module is used to calculate the first roll gap leveling delivery direction based on the full output segment data and the rolling force difference reference value. The second delivery direction calculation module is used to calculate the second roll gap leveling delivery direction based on the unidirectional output segment data and the rolling force difference reference value. The strip tail control module is used to make a consistency judgment based on the first roll gap leveling and the second ...

6. The strip tail section control device based on rolling force difference data according to claim 5, characterized in that, The first direction calculation module is further used for: The first roll gap leveling value is calculated based on the full output section data and the rolling force difference reference value. The first roll gap leveling direction is obtained based on the first roll gap leveling value.

7. The strip tail section control device based on rolling force difference data according to claim 5, characterized in that, The second direction calculation module is further used for: The second roll gap leveling value is calculated based on the unidirectional output section data and the rolling force difference reference value. The second roll gap leveling direction is obtained based on the second roll gap leveling value.

8. The strip tail section control device based on rolling force difference data according to claim 5, characterized in that, The strip tail control module is further used for: When the direction consistency judgment result is consistent, the roll gap leveling operation is performed according to the first roll gap leveling direction. When the direction consistency judgment result is inconsistent, the roll gap leveling operation is not performed.

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