CN109926452B - Process control method, process control device and terminal applied to steel rolling - Google Patents
Process control method, process control device and terminal applied to steel rolling Download PDFInfo
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Abstract
The invention is suitable for the technical field of metallurgy automatic control, and provides a process control method, a process control device, a terminal and a computer readable storage medium applied to steel rolling, wherein the process control method comprises the following steps: acquiring first information and second information, wherein the first information represents the specification information of a rolled piece to be rolled, and the second information represents the information of a plate blank to be rolled; dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters; and sending the dynamic process parameters to a specified rolling control system, wherein the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters. The invention is beneficial to improving the rolling precision of steel rolling.
Description
Technical Field
The invention belongs to the technical field of metallurgy automatic control, and particularly relates to a process control method, a process control device, a terminal and a computer readable storage medium applied to steel rolling.
Background
A Process Control System (Process Control System) belongs to a secondary Control System, and an automatic Control System is a computer System for managing production Process data, and usually completes the calculation of set values of each device on a production line and the collection of production Process data and product quality data.
At present, in steel rolling production, a steel mill needs to control the production process from a plate blank to a rolled piece, and usually parameters of a rolling system can be set according to a specification to be rolled, so that the rolling system performs the rolling of the plate blank according to the set parameters to generate the rolled piece meeting the specification.
Disclosure of Invention
In view of the above, the present invention provides a process control method, a process control apparatus, a terminal and a computer readable storage medium for steel rolling, and aims to solve the problem in the prior art that rolling precision is affected because preset rolling parameters are not consistent with an actual rolling process when the process control of steel rolling is performed.
The first aspect of the embodiment of the invention provides a process control method applied to steel rolling, which comprises the following steps:
acquiring first information and second information, wherein the first information represents the specification information of a rolled piece to be rolled, and the second information represents the information of a plate blank to be rolled;
dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters;
and sending the dynamic process parameters to a specified rolling control system, wherein the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters.
A second aspect of an embodiment of the present invention provides a process control apparatus applied to steel rolling, including:
the device comprises an information acquisition unit and a control unit, wherein the information acquisition unit is used for acquiring first information and second information, the first information represents the specification information of rolled pieces to be rolled, and the second information represents the information of slabs to be rolled;
the dynamic calculation unit is used for dynamically calculating the rolling process of the plate blank based on the first information and the second information to obtain dynamic process parameters;
and the parameter sending unit is used for sending the dynamic process parameters to a specified rolling control system, wherein the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters.
A third aspect of an embodiment of the present invention provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the process control methods applied to steel rolling when executing the computer program.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the process control applied to steel rolling as described in any one of the above.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps of acquiring first information and second information, wherein the first information represents specification information of a rolled piece to be rolled, and the second information represents information of a plate blank to be rolled; dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters; and sending the dynamic process parameters to a specified rolling control system so that the rolling control system performs rolling on the plate blank according to the dynamic process parameters. The obtained rolling parameters are dynamic process parameters obtained through dynamic calculation, and are not set fixed values, so that the error change in the actual rolling process can be adapted, the rolling parameters conform to the actual rolling process when the process of steel rolling is controlled, and the rolling precision can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flow chart of a process control method for steel rolling according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a process control apparatus for steel rolling according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, it shows an implementation flowchart of the process control method applied to steel rolling provided by the embodiment of the present invention, and details are as follows:
in step 101, first information and second information are obtained, wherein the first information represents specification information of a rolled piece to be rolled and the second information represents information of a slab to be rolled.
The steel rolling production system can comprise a Human Machine Interface (HMI), a terminal (server) and a Programmable Logic Controller (PLC), wherein the HMI, the server and the PLC can be connected through an Ethernet, the PLC is used for connecting a three-level system through the Ethernet to realize the actual control of the steel rolling equipment, and the HMI is used for Human-Machine interaction and comprises the steps of receiving an instruction input by an operator and displaying monitoring information to the operator. The terminal is a computing device and can realize the storage and the computation of information. The terminal can acquire monitoring data in the steel rolling production process through the PLC, can send a parameter setting instruction to the PLC, and instructs the PLC to set process parameters, so that the steel rolling process control is realized.
The process control method applied to steel rolling provided by the embodiment of the invention can be applied to a terminal in the framework, and the terminal can acquire the specification information of a rolled piece to be rolled and the information of a slab to be rolled, which are input by an operator through an HMI (human machine interface), wherein the specification information of the rolled piece to be rolled can comprise the thickness specification and the width specification of the rolled piece, and the information of the slab to be rolled can comprise a slab number, a slab material code, a slab thickness, a slab length, a slab width, a temperature, a target width and a target thickness, wherein the slab number is the identity code of a product, and the slab number of each slab is unique.
In step 102, a dynamic process parameter is obtained by dynamically calculating the rolling process of the slab based on the first information, the second information and a preset rolling strategy.
In the embodiment of the invention, dynamic process parameters can be obtained by dynamically calculating the rolling process of the slab according to the obtained information of the slab to be rolled of the specification information of the rolled piece to be rolled, wherein the dynamic calculation refers to monitoring the information change of the slab in real time in the rolling process, and the information change comprises the change of information such as slab thickness, slab length, slab width, temperature and the like. And dynamically calculating according to the monitored information change, and updating the process parameters in real time to obtain dynamic process parameters.
Optionally, the step 102 may be based on the following steps:
step 1021, forecasting process parameters based on the first information, the second information and a preset rolling strategy;
step 1022, acquiring third information, wherein the third information represents information of an intermediate piece in the process of rolling the slab into the rolled piece;
and 1023, dynamically correcting the forecasted process parameters based on the third information to obtain dynamic process parameters.
In the embodiment of the invention, the intermediate piece is in a shape before the plate blank is rolled into a rolled piece, and real-time calculation and updating of process parameters can be realized by monitoring the information of the intermediate piece.
In embodiments of the present invention, the slab to product rolling process may generally include: the method comprises the steps of rough rolling of multiple passes and finish rolling of multiple racks, wherein the rough rolling comprises flat rolling and vertical rolling, the flat rolling is used for rolling the thickness of a plate blank, the vertical rolling is used for rolling the width of the plate blank, and the finish rolling is used for enabling the thickness and the width of the plate blank to better accord with the set rolled piece specification.
In the embodiment of the invention, the dynamic process parameters can comprise the roll gap of the flat roll and the roll gap of the vertical roll in each pass of rough rolling and the rolling force and the rolling speed of each stand of finish rolling. The calculation process includes distributing the flat roll gaps and the vertical roll gaps of each rough rolling pass according to second information such as the material, the width, the thickness and the temperature of the plate blank and the width and the thickness of a final rolled piece, predicting the rolling force and the rolling speed of each finish rolling rack, and starting a rough rolling model and a finish rolling model for setting calculation.
Optionally, the first information includes a rolled piece thickness, and the second information includes a slab thickness; the above step 1021 can be implemented based on the following ways:
and forecasting the reduction rate of each flat rolling pass according to a preset rolling strategy by taking the thickness of the plate blank as the inlet thickness of the initial flat rolling pass and the thickness of the rolled piece as the outlet thickness of the final flat rolling pass.
In the embodiment of the invention, the slab thickness is used as the inlet thickness of the initial flat rolling pass, the rolled piece thickness is used as the outlet thickness of the final flat rolling pass, the overall reduction rate of the rough rolling pass is firstly calculated, and then the overall reduction rate is distributed with the number of the rough rolling passes.
In an embodiment of the present invention, the calculation of the reduction ratio of the flat rolling pass may include:
Redi＝(Hinto-HGo out)/HInto
Wherein, RediRepresents the reduction ratio of the ith rough rolling pass, HGo outDenotes the outlet thickness of the ith rough rolling pass, HIntoThe entry thickness of the ith rough pass is indicated.
In the embodiment of the present invention, the optimization and adjustment of the reduction ratio according to the reduction ratio optimization coefficient may specifically include:
Hgo out＝HInto(1-Beta×Redi)
Wherein Beta represents an optimization coefficient required to be adjusted for each pass relative reduction, and the adjustment aims to enable the deviation between the outlet thickness of the roughing mill set and the target thickness to be within an allowable range, and the allowable range can be achieved through a preset rolling strategy.
Optionally, the first information further includes a rolled piece width, and the second information further includes a slab width; the step 1021 may further include:
calculating the yield stress of the plate blank according to the forecasted reduction rate of each flat rolling pass;
calculating the rolling force of each flat rolling pass according to the yield stress;
and calculating the roll gap set value of each flat roll rolling pass according to the rolling force.
In the embodiment of the invention, the rolling force can be calculated according to the Sims formula, which specifically comprises the following steps:
P＝W×Ld×Qp×Sp
where P denotes the rolling force, W denotes the width of the slab, Ld denotes the contact arc length between the roll and the slab, Qp denotes the geometric coefficient used to calculate the force, and Sp denotes the average conditional yield stress corresponding to a given temperature, strain rate and reduction.
After the rolling force is calculated, the roll gap set value of the roughing roll rolling can be calculated according to the rolling force, which specifically includes:
wherein Gap represents a rollerGap set point, Wear, roll Wear, P rolling force, P0Shows the rolling force at which zero adjustment is completed, HGo outDenotes the outlet thickness, MmRepresenting mill stiffness and expand representing roll thermal expansion.
Optionally, the second information includes slab material information, and the step 1021 may further include:
determining the maximum allowable rolling reduction according to the slab material information;
calculating the width reduction of each vertical roll rolling pass according to the maximum allowable reduction;
and calculating the outlet width of each rolling pass according to the width reduction of each vertical rolling pass and the reduction rate of each flat rolling pass.
In the embodiment of the invention, the distribution of the side pressure of the slab can be realized by setting a model through a vertical roll, and the calculation formula can be as follows:
Wdraft[i]＝Lambda×maxdraft[i]
the Lambda can be a value which is more than 0 and less than 1, maxdraft [ i ] represents the maximum allowable rolling reduction of the ith pass, and Wdraft [ i ] represents the set width rolling reduction of the ith pass.
In the embodiment of the invention, the outlet width value of each pass of the rough rolling unit can be calculated by a width expansion formula according to the width of the plate blank and the outlet thickness of each pass set by the flat roll. The trial iterative algorithm can be used for solving to obtain the value of the optimal uniform reduction coefficient Lambda of each vertical roll pass, which can enable the outlet width of the roughing mill group to reach the target value. Thereby obtaining the final rough rolling each pass width reduction Wdraft [ i ].
Optionally, the third information includes temperature information of the middleware; the step 1023 may include:
determining the average shear stress of each finishing mill frame according to the temperature information;
calculating the rolling force of each finishing stand according to the average shear stress;
and calculating the reduction ratio of each finishing rolling stand according to the rolling force of each finishing rolling stand and a preset rolling force distribution ratio.
In the embodiment of the invention, the rolling force of each finishing stand can be calculated through a finishing model, and the specific calculation mode can be as follows:
wherein F represents rolling force, k represents average shear stress, W represents width of finish rolling, Arc represents contact Arc length, Havg represents average thickness, Ten represents rolling piece tension, and a1 and a2 are preset calculation parameters.
Where k ═ f (grade, T), k varies with the level of temperature T. The temperature model may be:
T0＝Ti-Tr-Ts+Tc+Tp+Tf+ΔT0
wherein, T0Denotes the finishing temperature, TiIndicating the slab temperature, TrDenotes the radiation temperature, TsIndicating the temperature drop of the coolant (emulsion), TcIndicating the temperature drop in contact with the roll, TpShowing temperature rise in deformation, TfDenotes the temperature rise due to friction,. DELTA.T0Indicating a correction compensation term.
In the embodiment of the present invention, the reduction ratios of the respective stands may be distributed at a fixed rolling force ratio, for example, 4 finishing stands, a target rolling force ratio is set to 1.0: 0.90: 0.75: 0.50, the rolling force distribution can be 2000, 1800, 1500, and 1000. It should be noted that the determination of the target rolling force ratio takes into account speed matching, mill power not exceeding limits, and strip shape issues.
Optionally, the third information further includes a width and a hardness of the intermediate member; the step 1023 may further include: the rolling force distribution ratio is adjusted based on the width and hardness of the intermediate member.
In the actual production process, when the width and the hardness of a rolled piece change, the distribution ratio of the rolling force can be adjusted, so that the load distribution tends to be reasonable.
In step 103, the dynamic process parameters are sent to a designated rolling control system, so that the rolling control system performs rolling on the slab according to the dynamic process parameters.
In the embodiment of the invention, different rolling force distribution ratios are required for different products. The roll gap and the rolling mill speed can be calculated through the models, the roll gap set value, the rolling mill speed and the rolling force forecast value are sent to the primary PLC control system, and meanwhile model self-adaptation and self-learning are continuously carried out, so that the rolling precision is further improved.
In an embodiment of the present invention, the calculation of the finishing set point may include calculation of a finishing roll gap set point and calculation of a roll speed set point.
Wherein, the calculation process of the setting value of the finishing mill roll gap can comprise the following steps:
wherein S is0Indicates the roll gap set value, HiThe exit thickness of the ith stand is indicated, F is the total rolling force, M is the mill stiffness, OiIndicating the amount of roll gap compensation.
Wherein, the calculation process of the set value of the roll speed can comprise the following steps:
Vri＝Vsi/(1+Slp)
wherein, VriIndicating roll speed, VsiIndicating the strip speed, SlpAnd the forward slip value when rolling steel is represented.
The strip steel speed can be obtained according to a flow equation and the outlet thickness, and the flow equation can be expressed as follows:
Hi＝(Vi+1×Hi+1)÷Vi
wherein HiDenotes the exit thickness, V, of the ith racki+1The strip speed of the (i + 1) th stand is shown.
According to the invention, the first information and the second information are obtained, wherein the first information represents the specification information of the rolled piece to be rolled, and the second information represents the information of the plate blank to be rolled; dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters; and sending the dynamic process parameters to a specified rolling control system so that the rolling control system performs rolling on the plate blank according to the dynamic process parameters. The obtained rolling parameters are dynamic process parameters obtained through dynamic calculation, and are not set fixed values, so that the error change in the actual rolling process can be adapted, the rolling parameters conform to the actual rolling process when the process of steel rolling is controlled, and the rolling precision can be improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 2 is a schematic structural diagram of a process control device applied to steel rolling according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, and detailed descriptions are as follows:
as shown in fig. 2, the process control apparatus 2 applied to steel rolling includes: an information acquisition unit 21, a dynamic calculation unit 22 and a parameter transmission unit 23.
An information acquisition unit 21 configured to acquire first information and second information, the first information indicating specification information of a rolled piece to be rolled, and the second information indicating information of a slab to be rolled;
a dynamic calculation unit 22, configured to perform dynamic calculation on the rolling process of the slab based on the first information and the second information, so as to obtain a dynamic process parameter;
a parameter sending unit 23, configured to send the dynamic process parameter to a specified rolling control system, where the dynamic process parameter is used to enable the rolling control system to perform rolling on the slab according to the dynamic process parameter.
Optionally, the process control device 2 applied to steel rolling further includes:
the parameter forecasting unit is used for forecasting process parameters based on the first information, the second information and a preset rolling strategy;
the information acquisition unit 21 is further configured to: acquiring third information, wherein the third information represents information of an intermediate piece in the process of rolling the slab into the rolled piece
The dynamic calculation unit 22 is further configured to dynamically modify the forecasted process parameter based on the third information to obtain a dynamic process parameter.
Optionally, the first information includes a rolled piece thickness, and the second information includes a slab thickness;
the parameter forecasting unit is also used for forecasting the reduction rate of each flat rolling pass according to a preset rolling strategy by taking the thickness of the plate blank as the inlet thickness of the initial flat rolling pass and the thickness of the rolled piece as the outlet thickness of the final flat rolling pass.
Optionally, the first information further includes a rolled piece width, and the second information further includes a slab width;
the parameter forecasting unit is further configured to:
calculating the yield stress of the plate blank according to the forecasted reduction rate of each flat rolling pass;
calculating the rolling force of each flat rolling pass according to the yield stress; and the number of the first and second groups,
and calculating the roll gap set value of each flat roll rolling pass according to the rolling force.
Optionally, the second information includes slab material information;
the dynamic calculation unit 22 is further configured to:
determining the maximum allowable rolling reduction according to the slab material information;
calculating the width reduction of each vertical roll rolling pass according to the maximum allowable reduction;
and calculating the outlet width of each rolling pass according to the width reduction of each vertical rolling pass and the reduction rate of each flat rolling pass.
Optionally, the third information includes temperature information of the middleware;
the dynamic calculation unit 22 is further configured to:
determining the average shear stress of each finishing mill frame according to the temperature information;
calculating the rolling force of each finishing stand according to the average shear stress;
and calculating the reduction ratio of each finishing rolling stand according to the rolling force of each finishing rolling stand and a preset rolling force distribution ratio.
Optionally, the third information further includes a width and a hardness of the intermediate member;
the dynamic calculation unit 22 is further configured to: the rolling force distribution ratio is adjusted based on the width and hardness of the intermediate member.
According to the invention, the first information and the second information are obtained, wherein the first information represents the specification information of the rolled piece to be rolled, and the second information represents the information of the plate blank to be rolled; dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters; and sending the dynamic process parameters to a specified rolling control system so that the rolling control system performs rolling on the plate blank according to the dynamic process parameters. The obtained rolling parameters are dynamic process parameters obtained through dynamic calculation, and are not set fixed values, so that the error change in the actual rolling process can be adapted, the rolling parameters conform to the actual rolling process when the process of steel rolling is controlled, and the rolling precision can be improved.
Fig. 3 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in fig. 3, the terminal 3 of this embodiment includes: a processor 30, a memory 31 and a computer program 32 stored in said memory 31 and executable on said processor 30. The processor 30, when executing the computer program 32, implements the steps in each of the above-described embodiments of the process control method applied to steel rolling, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 30, when executing the computer program 32, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 21 to 23 shown in fig. 2.
Illustratively, the computer program 32 may be partitioned into one or more modules/units that are stored in the memory 31 and executed by the processor 30 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 32 in the terminal 3. For example, the computer program 32 may be divided into an information acquisition unit, a dynamic calculation unit and a parameter transmission unit, and each unit has the following specific functions:
the device comprises an information acquisition unit and a control unit, wherein the information acquisition unit is used for acquiring first information and second information, the first information represents the specification information of rolled pieces to be rolled, and the second information represents the information of slabs to be rolled;
the dynamic calculation unit is used for dynamically calculating the rolling process of the plate blank based on the first information and the second information to obtain dynamic process parameters;
and the parameter sending unit is used for sending the dynamic process parameters to a specified rolling control system, and the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters.
The terminal 3 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal may include, but is not limited to, a processor 30, a memory 31. It will be appreciated by those skilled in the art that fig. 3 is only an example of a terminal 3 and does not constitute a limitation of the terminal 3 and may comprise more or less components than those shown, or some components may be combined, or different components, e.g. the terminal may further comprise input output devices, network access devices, buses, etc.
The Processor 30 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 31 may be an internal storage unit of the terminal 3, such as a hard disk or a memory of the terminal 3. The memory 31 may also be an external storage device of the terminal 3, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal 3. Further, the memory 31 may also include both an internal storage unit and an external storage device of the terminal 3. The memory 31 is used for storing the computer program and other programs and data required by the terminal. The memory 31 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (6)
1. A process control method applied to steel rolling is characterized by comprising the following steps:
acquiring first information and second information, wherein the first information represents the specification information of a rolled piece to be rolled, and the second information represents the information of a plate blank to be rolled;
dynamically calculating the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters;
sending the dynamic process parameters to a specified rolling control system, wherein the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters;
the dynamic calculation of the rolling process of the plate blank based on the first information, the second information and a preset rolling strategy to obtain dynamic process parameters comprises:
forecasting process parameters based on the first information, the second information and a preset rolling strategy;
acquiring third information, wherein the third information represents information of an intermediate piece in the process of rolling the slab into the rolled piece;
dynamically correcting the forecasted process parameters based on the third information to obtain dynamic process parameters;
the first information comprises rolled piece thickness and rolled piece width, the second information comprises slab thickness, slab width and slab material information, and the dynamic process parameters comprise flat roll gap and vertical roll gap of each pass of rough rolling and rolling force and speed of each stand of finish rolling;
the forecasting of the process parameters based on the first information, the second information and the preset rolling strategy comprises:
forecasting the reduction rate of each flat rolling pass according to a preset rolling strategy by taking the thickness of the plate blank as the inlet thickness of the initial flat rolling pass and the thickness of the rolled piece as the outlet thickness of the final flat rolling pass;
calculating the yield stress of the plate blank according to the forecasted reduction rate of each flat rolling pass;
calculating the rolling force of each flat rolling pass according to the yield stress;
calculating the roll gap set value of each flat roll rolling pass according to the rolling force;
determining the maximum allowable rolling reduction according to the slab material information;
calculating the width reduction of each vertical roll rolling pass according to the maximum allowable reduction;
and calculating the outlet width of each rolling pass according to the width reduction of each vertical rolling pass and the reduction rate of each flat rolling pass.
2. The process control method applied to steel rolling according to claim 1, wherein the third information includes temperature information of the middleware;
the dynamically correcting the forecasted process parameters based on the third information to obtain dynamic process parameters comprises:
determining the average shear stress of each finishing mill frame according to the temperature information;
calculating the rolling force of each finishing stand according to the average shear stress;
and calculating the reduction ratio of each finishing rolling stand according to the rolling force of each finishing rolling stand and a preset rolling force distribution ratio.
3. The process control method applied to rolled steel as claimed in claim 2, wherein the third information further includes a width and a hardness of the intermediate member;
correspondingly, the dynamically correcting the forecasted process parameter based on the third information to obtain a dynamic process parameter further includes:
the rolling force distribution ratio is adjusted based on the width and hardness of the intermediate member.
4. A process control device applied to steel rolling is characterized by comprising:
an information acquisition unit configured to acquire first information, second information, and third information, wherein the first information indicates specification information of a rolled piece to be rolled, the second information indicates information of a slab to be rolled, and the third information indicates information of an intermediate in a process in which the slab is rolled into the rolled piece;
the dynamic calculation unit is used for dynamically calculating the rolling process of the plate blank based on the first information and the second information to obtain dynamic process parameters; the first information comprises rolled piece thickness and rolled piece width, the second information comprises slab thickness, slab width and slab material information, and the dynamic process parameters comprise flat roll gap and vertical roll gap of each pass of rough rolling and rolling force and speed of each stand of finish rolling;
the dynamic calculation unit is further configured to,
dynamically correcting the forecasted process parameters based on the third information to obtain dynamic process parameters;
determining the maximum allowable rolling reduction according to the slab material information;
calculating the width reduction of each vertical roll rolling pass according to the maximum allowable reduction;
calculating the outlet width of each rolling pass according to the width reduction of each vertical rolling pass and the reduction rate of each flat rolling pass;
the parameter sending unit is used for sending the dynamic process parameters to a specified rolling control system, and the dynamic process parameters are used for enabling the rolling control system to roll the plate blank according to the dynamic process parameters;
the parameter forecasting unit is used for forecasting process parameters based on the first information, the second information and a preset rolling strategy;
forecasting the reduction rate of each flat rolling pass according to a preset rolling strategy by taking the thickness of the plate blank as the inlet thickness of the initial flat rolling pass and the thickness of the rolled piece as the outlet thickness of the final flat rolling pass;
calculating the yield stress of the plate blank according to the forecasted reduction rate of each flat rolling pass;
calculating the rolling force of each flat rolling pass according to the yield stress;
and calculating the roll gap set value of each flat roll rolling pass according to the rolling force.
5. A terminal comprising a memory, a processor and a computer program stored in said memory and executable on said processor, characterized in that said processor implements the steps of the process control method for steel rolling as claimed in any one of claims 1 to 3 above when executing said computer program.
6. A computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the steps of the process control method for steel rolling as claimed in any one of claims 1 to 3.
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Denomination of invention: Process control methods, process control devices, and terminals applied to steel rolling Granted publication date: 20200908 Pledgee: China Construction Bank Qianxi Branch Pledgor: HEBEI JINXI IRON AND STEEL GROUP Co.,Ltd. Registration number: Y2024980010840 |