Control method and device of rolling system and readable storage medium
By obtaining the slab thickness and equipment parameters in the rolling system, determining and setting the target pressure amount of the first rolling mill, the problems of low rolling accuracy and large temperature drop are solved, and a more efficient and accurate rolling process is achieved. .
Patent Information
- Application Number
- CN202411779661.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-02-11
AI Technical Summary
In the prior art, the rolling accuracy is low and the rolling temperature drop is large, resulting in low steel processing efficiency and quality.
By obtaining the first thickness and the second thickness of the slab, as well as the equipment parameters of the first and second rolling mills, the target pressure amount of the first rolling mill is determined and set to the pressure amount of the first rolling mill, Improve rolling accuracy and control rolling temperature drop.
It improves the rolling accuracy of the rolling system, shortens the rolling time, reduces the rolling temperature drop, thereby reducing energy consumption and production costs.
Smart Images
Figure CN119406933A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of equipment control, and in particular to a control method, device and readable storage medium for a rolling system. Background Art
[0002] At present, in steel processing enterprises, hot rolling and low temperature rolling technology has become an important control method for enterprises to reduce costs and increase efficiency. How to achieve low furnace temperature and high rolling temperature in finishing rolling, and rough rolling temperature drop control is crucial. However, in conventional hot rolling production lines, the control method of the rolling system has technical problems such as low rolling accuracy and large rolling temperature drop. Summary of the invention
[0003] The embodiments of the present application provide a control method, device and readable storage medium for a rolling system, which are used to solve technical problems in the prior art such as low rolling accuracy and large rolling temperature drop.
[0004] According to a first aspect of an embodiment of the present application, a control method for a rolling system is provided, wherein the rolling system comprises a fixed width press, a first rolling mill, and a second rolling mill, wherein the fixed width press is used to transfer a pressed slab to the first rolling mill, and the first rolling mill is used to transfer a rolled slab to the second rolling mill, and the method comprises:
[0005] After the slab is pressed by a fixed width press, a first thickness of the slab is obtained;
[0006] Obtaining equipment parameters of the first rolling mill;
[0007] Determining a roll gap threshold of a first rolling mill according to the first thickness and equipment parameters;
[0008] Obtaining a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab, where the second thickness is the thickness of the slab after being rolled by the second rolling mill;
[0009] Determining a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness;
[0010] The reduction amount of the first rolling mill is set to the target reduction amount value.
[0011] The control method of the rolling system in this embodiment determines the target reduction value of the first rolling mill through parameters such as the roll gap threshold, the reduction threshold, the first thickness and the second thickness, and sets the reduction of the first rolling mill to the target reduction value, thereby improving the rolling accuracy of the rolling system, shortening the rolling time of the rolling system, and reducing the rolling temperature drop of the rolling system.
[0012] According to a second aspect of an embodiment of the present application, a control device for a rolling system is provided. The rolling system includes a fixed width press, a first rolling mill, and a second rolling mill. The fixed width press is used to transfer the pressed slab to the first rolling mill. The first rolling mill is used to transfer the rolled slab to the second rolling mill. The device includes:
[0013] An acquisition unit, used for acquiring a first thickness of the slab after the slab is pressed by a fixed width press;
[0014] The acquisition unit is also used to acquire equipment parameters of the first rolling mill;
[0015] A processing unit, configured to determine a roll gap threshold of a first rolling mill according to the first thickness and equipment parameters;
[0016] The acquisition unit is further used to acquire a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab, where the second thickness is the thickness of the slab after being rolled by the second rolling mill;
[0017] The processing unit is further used to determine a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness;
[0018] The processing unit is also used to set the reduction amount of the first rolling mill to a target reduction amount value.
[0019] The control device of the rolling system in this embodiment determines the target reduction value of the first rolling mill through parameters such as the roll gap threshold, the reduction threshold, the first thickness and the second thickness, and sets the reduction of the first rolling mill to the target reduction value, thereby improving the rolling accuracy of the rolling system, shortening the rolling time of the rolling system, and reducing the rolling temperature drop of the rolling system.
[0020] In a third aspect of the embodiments of the present application, another rolling system control device is provided, comprising a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the rolling system control method in any of the above embodiments are implemented. Therefore, the rolling system control device has all the beneficial effects of the rolling system control method in any of the above embodiments, which will not be described in detail here.
[0021] In a fourth aspect of the embodiments of the present application, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the control method of the rolling system in any of the above embodiments are implemented. Therefore, the readable storage medium has all the beneficial effects of the control method of the rolling system in any of the above embodiments, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0023] Figure 1 A flow chart of a control method for a rolling system provided in an embodiment of the present application;
[0024] Figure 2 A schematic diagram of a first rolling mill provided in an embodiment of the present application;
[0025] Figure 3 A schematic diagram of a second rolling mill provided in an embodiment of the present application;
[0026] Figure 4 A functional module block diagram of a control device for a rolling system provided in an embodiment of the present application;
[0027] Figure 5 This is a structural block diagram of the control device of the rolling system provided in an embodiment of the present application. DETAILED DESCRIPTION
[0028] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.
[0029] 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 that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.
[0030] In some embodiments, Figure 1As shown, an embodiment of the present application provides a control method for a rolling system, comprising:
[0031] Step S101, obtaining a first thickness of the slab after the slab is pressed by a fixed width press;
[0032] Step S102, obtaining equipment parameters of the first rolling mill;
[0033] Step S103, determining a roll gap threshold of the first rolling mill according to the first thickness and equipment parameters;
[0034] Step S104, obtaining a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab;
[0035] Step S105, determining a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness;
[0036] Step S106, setting the reduction amount of the first rolling mill to the target reduction amount value.
[0037] In this embodiment, a control method for a rolling system is provided, wherein the rolling system is an equipment system for rolling slabs, including a width-fixing press, a first rolling mill and a second rolling mill, the width-fixing press is a device for pressing the slab to limit the width of the slab, and the first rolling mill and the second rolling mill are equipment for rolling the slabs.
[0038] The width fixing press is used to transfer the pressed slab to the first rolling mill, and the first rolling mill is used to transfer the rolled slab to the second rolling mill.
[0039] Exemplarily, the rolling system may be a steel rough rolling system, and the first rolling mill and the second rolling mill may be slab rough rolling mills in the rolling system.
[0040] Exemplarily, in the rolling system, the slab passes through a width-fixing press, a first rolling mill, and a second rolling mill in sequence so that the thickness of the slab reaches a required thickness value.
[0041] After the slab is pressed by the fixed-width press, a first thickness of the slab is obtained, wherein the first thickness is the thickness of the slab after being pressed by the fixed-width press.
[0042] Obtain equipment parameters of the first rolling mill, wherein the equipment parameters are equipment parameters of the first rolling mill.
[0043] A roll gap threshold of the first rolling mill is determined according to the first thickness and equipment parameters, wherein the roll gap threshold is a gap threshold between the rolls in the first rolling mill.
[0044] Exemplarily, the roll gap threshold may be a roll gap maximum value.
[0045] The reduction threshold corresponding to the second rolling mill and the second thickness corresponding to the slab are obtained, wherein the second thickness is the thickness of the slab after being rolled by the second rolling mill, and the reduction threshold is the reduction threshold of the second rolling mill.
[0046] Illustratively, the second thickness may be a target thickness of the slab after being rolled by the second rolling mill.
[0047] Exemplarily, the pressing amount threshold may be the maximum pressing amount of the second rolling mill.
[0048] According to the roll gap threshold, the reduction threshold, the first thickness and the second thickness, the target reduction value of the first rolling mill is determined, and the reduction of the first rolling mill is set to the target reduction value, wherein the target reduction value is the value for setting the reduction of the first rolling mill.
[0049] It should be noted that, in this embodiment, the target reduction value of the first rolling mill is determined by parameters such as the roll gap threshold, the reduction threshold, the first thickness, and the second thickness, thereby ensuring the data accuracy of the target reduction value, that is, ensuring the rolling accuracy of the first rolling mill, thereby shortening the rolling time of the first rolling mill and reducing the rolling temperature drop of the first rolling mill. In addition, by reducing the rolling temperature drop of the first rolling mill, the temperature drop of the slab in the rolling system can be reduced, that is, reducing the energy demand of the rolling system and reducing the energy consumption of the rolling system.
[0050] The control method of the rolling system in this embodiment determines the target reduction value of the first rolling mill through parameters such as the roll gap threshold, the reduction threshold, the first thickness and the second thickness, and sets the reduction of the first rolling mill to the target reduction value, thereby improving the rolling accuracy of the rolling system, shortening the rolling time of the rolling system, and reducing the rolling temperature drop of the rolling system.
[0051] In some embodiments, a control method for a rolling system is provided, which determines a target reduction value of a first rolling mill according to a roll gap threshold, a reduction threshold, a first thickness, and a second thickness, including:
[0052] Step S201, when the roller gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is greater than or equal to the pressing amount threshold, determine the target pressing amount value according to the pressing amount threshold, the first thickness and the second thickness.
[0053] In this embodiment, when the roller gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is greater than or equal to the pressure reduction threshold, data calculation is performed on the pressure reduction threshold, the first thickness and the second thickness to obtain the target pressure reduction value.
[0054] Exemplarily, when R1_GAPmax-h2>0, and h2-h3≥H2max:
[0055] H1 light = h2 - h3 - H2max;
[0056] Wherein, R1_GAPmax is the roll gap threshold, h2 is the first thickness, h3 is the second thickness, H2max is the reduction threshold, and H1 light is the target reduction value.
[0057] In the control method of the rolling system in this embodiment, when the roll gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is greater than or equal to the reduction threshold, data operations are performed on the reduction threshold, the first thickness, and the second thickness to obtain the target reduction value, ensuring the data accuracy of the target reduction value and improving the rolling accuracy of the rolling system.
[0058] In some embodiments, a control method of a rolling system is proposed. According to the roll gap threshold, the reduction threshold, the first thickness, and the second thickness, the target reduction value of the first rolling mill is determined, including:
[0059] Step S301, when the roll gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is less than the reduction threshold, set the target reduction value to a preset value.
[0060] In this embodiment, when the roll gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is less than the reduction threshold, set the target reduction value to a preset value.
[0061] Exemplarily, the preset value can be 0 mm.
[0062] Exemplarily, when R1_GAPmax - h2 > 0 and h2 - h3 < H2max, H1 light = 0, where R1_GAPmax is the roll gap threshold, h2 is the first thickness, h3 is the second thickness, H2max is the reduction threshold, and H1 light is the target reduction value.
[0063] In the control method of the rolling system in this embodiment, when the roll gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is less than the reduction threshold, set the target reduction value to a preset value, ensuring the data accuracy of the target reduction value and improving the rolling accuracy of the rolling system.
[0064] In some embodiments, a control method of a rolling system is proposed. According to the roll gap threshold, the reduction threshold, the first thickness, and the second thickness, the target reduction value of the first rolling mill is determined, including:
[0065] Step S401, when the roll gap threshold is less than the first thickness and the difference between the roll gap threshold and the second thickness is greater than or equal to the reduction threshold, determine the target reduction value according to the reduction threshold, the first thickness, and the second thickness.
[0066] In this embodiment, when the roll gap threshold is less than the first thickness, and the difference between the roll gap threshold and the second thickness is greater than or equal to the pressure reduction threshold, data processing is performed on the pressure reduction threshold, the first thickness and the second thickness to obtain the target pressure reduction value.
[0067] Exemplarily, when R1_GAPmax-h2<0, R1_GAPmax-h3≥H2max:
[0068] H1 light = h2-h3-H2max;
[0069] Among them, R1_GAPmax is the roller gap threshold, h2 is the first thickness, h3 is the second thickness, H2max is the pressure reduction threshold, and H1 light is the target pressure reduction value.
[0070] The control method of the rolling system in this embodiment performs data processing on the reduction amount threshold, the first thickness and the second thickness to obtain the target reduction amount value when the roll gap threshold is less than the first thickness and the difference between the roll gap threshold and the second thickness is greater than or equal to the reduction amount threshold, thereby ensuring the data accuracy of the target reduction amount value and improving the rolling accuracy of the rolling system.
[0071] In some embodiments, a control method for a rolling system is provided, which determines a target reduction value of a first rolling mill according to a roll gap threshold, a reduction threshold, a first thickness, and a second thickness, including:
[0072] Step S501, when the roll gap threshold is less than the first thickness, and the difference between the roll gap threshold and the second thickness is less than the depression threshold, determine the target depression value according to the depression threshold and the first thickness.
[0073] In this embodiment, when the roll gap threshold is smaller than the first thickness, and the difference between the roll gap threshold and the second thickness is smaller than the depression threshold, data processing is performed on the depression threshold and the first thickness to obtain a target depression value.
[0074] Exemplarily, when R1_GAPmax-h2<0, R1_GAPmax-h3<H2max:
[0075] H1 light = h2 - R1_GAPmax;
[0076] Among them, R1_GAPmax is the roller gap threshold, h2 is the first thickness, h3 is the second thickness, H2max is the pressure reduction threshold, and H1 light is the target pressure reduction value.
[0077] It should also be noted that h2=h1+△W / 10; 0≤H1light≤H1max; △W≤maximum width reduction of SSP equipment; h2≤H1max+H2max+h3; h3
[0078] Exemplarily, condition one: when R1_GAPmax-h2>0, h2-h3≥H2max, H1 light=h2-h3-H2max.
[0079] Condition 2: When R1_GAPmax-h2>0, h2-h3<H2max, H1light=0.
[0080] Condition three: When R1_GAPmax-h2<0, R1_GAPmax-h3≥H2max, H1 light=h2-h3-H2max.
[0081] Condition 4: When R1_GAPmax-h2<0, R1_GAPmax-h3<H2max, H1 light=h2-R1_GAPmax.
[0082] For example, the rolling line elevation of the lower roll of the R1 rolling mill in a certain factory is 842 mm, the diameter of the R1 upper working roll is 1320 mm, and the slab billet weighs 20 tons.
[0083] It can be seen that R1_GAPmax=1748-Dw / 2-P=1748-1320 / 2-842=246mm.
[0084] Since R1_GAPmax-h2=246-252.6<0;
[0085] R1_GAPmax-h3=246-30≥H2max=215mm.
[0086] Therefore, condition three is selected: H1 light = h2-h3-H2max = 252.6-30-215 = 7.6mm.
[0087] The control method of the rolling system in this embodiment performs data processing on the reduction amount threshold and the first thickness to obtain the target reduction amount value when the roll gap threshold is less than the first thickness and the difference between the roll gap threshold and the second thickness is less than the reduction amount threshold, thereby ensuring the data accuracy of the target reduction amount value and improving the rolling accuracy of the rolling system.
[0088] In some embodiments, a control method for a rolling system is provided, which determines a roll gap threshold of a first rolling mill according to a first thickness and equipment parameters, including:
[0089] Step S601, determining the maximum roll gap value of the first rolling mill according to the roll diameter data and the equipment size data;
[0090] Step S602, determining a roll gap threshold value according to the maximum roll gap value and the first thickness.
[0091] In this embodiment, the equipment parameters include roll diameter data and equipment size data, the roll diameter data is the roll diameter data of the first rolling mill, and the equipment size data is the size data of the first rolling mill.
[0092] The maximum roll gap value of the first rolling mill is determined according to the roll diameter data and the equipment size data, wherein the maximum roll gap value is the maximum value of the gap between the rolls in the first rolling mill.
[0093] The roll gap threshold is determined according to the maximum roll gap value and the first thickness.
[0094] Table 1
[0095]
[0096]
[0097] For example, Figure 2 As shown, Figure 2 is a schematic diagram of the first rolling mill R1, as shown Figure 3 As shown, Figure 3 It is a schematic diagram of the second rolling mill R2.
[0098] Combined with Table 1, the R1 upper roll gap control is relative to the design elevation of the lower roll rolling line. Under different upper roll diameters (working rolls, support rolls), it is controlled by mechanical and hydraulic pressure. The mechanical pressure mainly relies on the position sensor to detect the stroke change, and the hydraulic pressure mainly relies on the Sony magnetic ruler to detect the stroke change. The other upper pressure auxiliary equipment is a fixed-length constant parameter and does not affect the R1 roll gap control.
[0099] The derivation formula is:
[0100] Calculation of the R1 roll gap of a four-roll mill: GAP = LMtotal-EH-Db / 2-Dw-P.
[0101] Calculation of the R1 roll gap of a two-roll mill: GAP = LMtotal-EH-Dw / 2-P.
[0102] Among them, GAP is the roll gap of the first rolling mill R1, L is the deviation between the top of the first rolling mill R1 and the design elevation of the rolling line of the lower roll, M is a constant, M = M1 + M2 + M3 + M4, M1, M2, M3 and M4 are the fixed length parameters of the upper pressing and lowering auxiliary equipment of the first rolling mill R1, E is the mechanical pressing feedback stroke, H is the hydraulic pressing (rolling position) Sony magnetic scale feedback stroke, Dw is the upper working roll diameter, Db is the upper support roll diameter, and P is the actual elevation of the rolling line of the lower roll of the first rolling mill R1. In addition, the mechanical pressing stroke of the first rolling mill R1 is 0≤E≤Emax, the hydraulic pressing stroke (rolling position) of the first rolling mill R1 is 0<H≤Hmax, the roll diameter of the working roll of the first rolling mill R1 is Dw, Dw_min≤Dw≤Dw_max, the roll diameter of the support roll of the first rolling mill R1 is Db, Db_min≤Dw≤Db_max, and P meets the process rolling requirements, Pmin≤P≤Pmax.
[0103] According to the above parameters and control range, the maximum roll gap R1_GAPmax allowed by the equipment when the first rolling mill R1 is a four-roller or two-roller rolling mill can be calculated.
[0104] The control method of the rolling system in this embodiment determines the maximum roll gap value of the first rolling mill based on the roll diameter data and the equipment size data, and then determines the roll gap threshold value based on the maximum roll gap value and the first thickness, thereby ensuring the data accuracy of the roll gap threshold value and improving the rolling accuracy of the rolling system.
[0105] In some embodiments, a control method for a rolling system is provided, wherein a roll gap threshold is determined according to a maximum roll gap value and a first thickness, and the method comprises:
[0106] Step S701, when the maximum roll gap value is greater than the first thickness, determining that the roll gap threshold is equal to the first thickness;
[0107] Step S702: when the maximum roll gap value is less than the first thickness, determine that the roll gap threshold is equal to the maximum roll gap value.
[0108] In this embodiment, when the maximum roll gap value is greater than the first thickness, the roll gap threshold is determined to be equal to the first thickness, and when the maximum roll gap value is less than the first thickness, the roll gap threshold is determined to be equal to the maximum roll gap value.
[0109] Illustratively, the first thickness may be an average slab thickness.
[0110] Exemplarily, the maximum roll gap value R1_GAPmax is calculated based on the mechanical structure of the first rolling mill R1 and compared with the first thickness h2 after extrusion by the fixed width press SSP, and the minimum value is taken as the maximum roll gap setting amount when the first rolling mill R1 is lightly pressed down, that is: when R1_GAPmax-h2>0, the roll gap threshold value when the first rolling mill R1 is lightly pressed down is set to h2; when R1_GAPmax-h2<0, the roll gap threshold value when the first rolling mill R1 is lightly pressed down is set to R1_GAPma; when R1_GAPmax-h2=0, the roll gap threshold value when R1 is lightly pressed down can be set to R1_GAPmax or h2.
[0111] The control method of the rolling system in this embodiment determines that the roll gap threshold is equal to the first thickness when the maximum roll gap value is greater than the first thickness, and determines that the roll gap threshold is equal to the maximum roll gap value when the maximum roll gap value is less than the first thickness, thereby ensuring the data accuracy of the roll gap threshold and improving the rolling accuracy of the rolling system.
[0112] In some embodiments, Figure 4 As shown, in an embodiment of the present application, a control device 800 of a rolling system is provided, comprising:
[0113] An acquisition unit 802 is used to acquire a first thickness of the slab after the slab is pressed by a fixed width press;
[0114] The acquisition unit 802 is also used to acquire equipment parameters of the first rolling mill;
[0115] The processing unit 804 is used to determine a roll gap threshold of the first rolling mill according to the first thickness and the equipment parameter;
[0116] The acquisition unit 802 is further used to acquire a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab, where the second thickness is the thickness of the slab after being rolled by the second rolling mill;
[0117] The processing unit 804 is further used to determine a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness;
[0118] The processing unit 804 is further used to set the reduction amount of the first rolling mill to a target reduction amount value.
[0119] In this embodiment, a control device 800 for a rolling system is provided, wherein the rolling system is an equipment system for rolling slabs, including a width-fixing press, a first rolling mill and a second rolling mill, the width-fixing press is a device for pressing the slab to limit the width of the slab, and the first rolling mill and the second rolling mill are equipment for rolling the slabs.
[0120] The width fixing press is used to transfer the pressed slab to the first rolling mill, and the first rolling mill is used to transfer the rolled slab to the second rolling mill.
[0121] Exemplarily, the rolling system may be a steel rough rolling system, and the first rolling mill and the second rolling mill may be slab rough rolling mills in the rolling system.
[0122] Exemplarily, in the rolling system, the slab passes through a width-fixing press, a first rolling mill, and a second rolling mill in sequence so that the thickness of the slab reaches a required thickness value.
[0123] After the slab is pressed by the fixed-width press, a first thickness of the slab is obtained, wherein the first thickness is the thickness of the slab after being pressed by the fixed-width press.
[0124] Obtain equipment parameters of the first rolling mill, wherein the equipment parameters are equipment parameters of the first rolling mill.
[0125] A roll gap threshold of the first rolling mill is determined according to the first thickness and equipment parameters, wherein the roll gap threshold is a gap threshold between the rolls in the first rolling mill.
[0126] Exemplarily, the roll gap threshold may be a roll gap maximum value.
[0127] The reduction threshold corresponding to the second rolling mill and the second thickness corresponding to the slab are obtained, wherein the second thickness is the thickness of the slab after being rolled by the second rolling mill, and the reduction threshold is the reduction threshold of the second rolling mill.
[0128] Illustratively, the second thickness may be a target thickness of the slab after being rolled by the second rolling mill.
[0129] Exemplarily, the pressing amount threshold may be the maximum pressing amount of the second rolling mill.
[0130] According to the roll gap threshold, the reduction threshold, the first thickness and the second thickness, the target reduction value of the first rolling mill is determined, and the reduction of the first rolling mill is set to the target reduction value, wherein the target reduction value is the value for setting the reduction of the first rolling mill.
[0131] It should be noted that, in this embodiment, the target reduction value of the first rolling mill is determined by parameters such as the roll gap threshold, the reduction threshold, the first thickness, and the second thickness, thereby ensuring the data accuracy of the target reduction value, that is, ensuring the rolling accuracy of the first rolling mill, thereby shortening the rolling time of the first rolling mill and reducing the rolling temperature drop of the first rolling mill. In addition, by reducing the rolling temperature drop of the first rolling mill, the temperature drop of the slab in the rolling system can be reduced, that is, reducing the energy demand of the rolling system and reducing the energy consumption of the rolling system.
[0132] The control device 800 of the rolling system in this embodiment determines the target reduction value of the first rolling mill through parameters such as the roll gap threshold, the reduction threshold, the first thickness and the second thickness, and sets the reduction of the first rolling mill to the target reduction value, thereby improving the rolling accuracy of the rolling system, shortening the rolling time of the rolling system, and reducing the rolling temperature drop of the rolling system.
[0133] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0134] The processing unit 804 is further used to determine the target depression amount value according to the depression amount threshold, the first thickness and the second thickness when the roller gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is greater than or equal to the depression amount threshold.
[0135] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0136] The processing unit 804 is further configured to set the target pressing amount value to a preset value when the roller gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is less than the pressing amount threshold.
[0137] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0138] The processing unit 804 is also used to determine the target depression amount value according to the depression amount threshold, the first thickness and the second thickness when the roll gap threshold is less than the first thickness and the difference between the roll gap threshold and the second thickness is greater than or equal to the depression amount threshold.
[0139] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0140] The processing unit 804 is further used to determine a target depression amount value according to the depression amount threshold and the first thickness when the roll gap threshold is less than the first thickness and the difference between the roll gap threshold and the second thickness is less than the depression amount threshold.
[0141] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0142] The processing unit 804 is further used to determine the maximum roll gap value of the first rolling mill according to the roll diameter data and the equipment size data;
[0143] The processing unit 804 is further configured to determine a roll gap threshold value according to the maximum roll gap value and the first thickness.
[0144] In some embodiments, a control device 800 for a rolling system is provided, further comprising:
[0145] The processing unit 804 is further configured to determine that the roll gap threshold is equal to the first thickness when the maximum roll gap value is greater than the first thickness;
[0146] The processing unit 804 is further configured to determine that the roll gap threshold is equal to the maximum roll gap value when the maximum roll gap value is less than the first thickness.
[0147] In some embodiments, Figure 4 As shown, a rolling system control device 900 is proposed, and the rolling system control device 900 includes a processor 902 and a memory 904. The memory 904 stores a computer program, and the computer program implements the steps of the rolling system control method in any of the above embodiments when executed by the processor 902. Therefore, the rolling system control device 900 has all the beneficial effects of the rolling system control method in any of the above embodiments, which will not be repeated here.
[0148] In some embodiments, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the control method of the rolling system in any of the above embodiments are implemented, thereby having all the beneficial technical effects of the control method of the rolling system in any of the above embodiments.
[0149] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0150] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.
[0151] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing 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.
[0152] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.
[0153] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing 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.
[0154] An embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of the control method of the rolling system.
[0155] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application 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 a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.
[0156] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.
[0157] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of 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 system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.
[0158] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0159] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
[0160] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable 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 various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.
[0161] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
[0162] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.
[0163] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.
Claims
1. A control method for a rolling system, characterized in that: The rolling system comprises a width setting press, a first rolling mill and a second rolling mill, the width setting press is used to transfer the pressed slab to the first rolling mill, the first rolling mill is used to transfer the rolled slab to the second rolling mill, and the method comprises: After the slab is pressed by the fixed width press, obtaining a first thickness of the slab; Acquiring equipment parameters of the first rolling mill; Determining a roll gap threshold of the first rolling mill according to the first thickness and the equipment parameters; Obtaining a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab, where the second thickness is the thickness of the slab after being rolled by the second rolling mill; Determining a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness, and the second thickness; The reduction amount of the first rolling mill is set to the target reduction amount value.
2. The method according to claim 1, characterized in that Determining the target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness includes: When the roller gap threshold is greater than the first thickness and the difference between the first thickness and the second thickness is greater than or equal to the depression threshold, the target depression value is determined based on the depression threshold, the first thickness and the second thickness.
3. The method according to claim 1, characterized in that Determining the target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness includes: When the roller gap threshold is greater than the first thickness, and the difference between the first thickness and the second thickness is less than the pressing amount threshold, the target pressing amount value is set to a preset value.
4. The method according to claim 1, characterized in that: Determining the target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness includes: When the roll gap threshold is less than the first thickness, and the difference between the roll gap threshold and the second thickness is greater than or equal to the depression amount threshold, the target depression amount value is determined based on the depression amount threshold, the first thickness and the second thickness.
5. The method according to claim 1, characterized in that Determining the target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness includes: When the roll gap threshold is smaller than the first thickness, and the difference between the roll gap threshold and the second thickness is smaller than the depression amount threshold, the target depression amount value is determined according to the depression amount threshold and the first thickness.
6. The method according to any one of claims 1 to 5, characterized in that The equipment parameters include roller diameter data and equipment size data, Determining the roll gap threshold of the first rolling mill according to the first thickness and the equipment parameter includes: Determining a maximum roll gap value of the first rolling mill according to the roll diameter data and the equipment size data; The roll gap threshold is determined according to the maximum roll gap value and the first thickness.
7. The method according to claim 6, characterized in that The step of determining the roll gap threshold value according to the maximum roll gap value and the first thickness includes: When the maximum roll gap value is greater than the first thickness, determining that the roll gap threshold is equal to the first thickness; When the maximum roll gap value is less than the first thickness, the roll gap threshold is determined to be equal to the maximum roll gap value.
8. A control device for a rolling system, characterized in that: The rolling system comprises a width setting press, a first rolling mill and a second rolling mill, wherein the width setting press is used to transfer the pressed slab to the first rolling mill, and the first rolling mill is used to transfer the rolled slab to the second rolling mill, and the device comprises: An acquisition unit, configured to acquire a first thickness of the slab after the slab is pressed by the fixed-width press; The acquisition unit is further used to acquire equipment parameters of the first rolling mill; a processing unit, configured to determine a roll gap threshold of the first rolling mill according to the first thickness and the equipment parameter; The acquisition unit is further used to acquire a reduction threshold corresponding to the second rolling mill and a second thickness corresponding to the slab, where the second thickness is the thickness of the slab after being rolled by the second rolling mill; The processing unit is further used to determine a target reduction value of the first rolling mill according to the roll gap threshold, the reduction threshold, the first thickness and the second thickness; The processing unit is further used to set the reduction amount of the first rolling mill to the target reduction amount value.
9. A control device for a rolling system, characterized in that: include: processor; A memory, wherein a program or instruction is stored in the memory, and when the processor executes the program or instruction in the memory, the steps of the control method of the rolling system as claimed in any one of claims 1 to 7 are implemented.
10. A readable storage medium, characterized in that: The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, the steps of the control method of the rolling system as described in any one of claims 1 to 7 are implemented.