CN114570766A - Real-time screw-down adjusting device of finishing mill and control method - Google Patents

Real-time screw-down adjusting device of finishing mill and control method Download PDF

Info

Publication number
CN114570766A
CN114570766A CN202210249462.1A CN202210249462A CN114570766A CN 114570766 A CN114570766 A CN 114570766A CN 202210249462 A CN202210249462 A CN 202210249462A CN 114570766 A CN114570766 A CN 114570766A
Authority
CN
China
Prior art keywords
plc
finishing mill
finish rolling
frame
stand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210249462.1A
Other languages
Chinese (zh)
Inventor
马莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi Yunshi Taigang Information Automation Technology Co ltd
Original Assignee
Shanxi Yunshi Taigang Information Automation Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanxi Yunshi Taigang Information Automation Technology Co ltd filed Critical Shanxi Yunshi Taigang Information Automation Technology Co ltd
Priority to CN202210249462.1A priority Critical patent/CN114570766A/en
Publication of CN114570766A publication Critical patent/CN114570766A/en
Priority to CN202210705304.2A priority patent/CN114798729A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B2031/021—Integral tandem mill housings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The invention belongs to the technical field of automatic control of hot continuous rolling strip steel, and particularly relates to a real-time screw-down adjusting device of a finishing mill, which comprises a finishing mill group consisting of 7 finishing mill frames, wherein each finishing mill frame is provided with a frame PLC (programmable logic controller), the management PLC and the 7 frame PLCs communicate at high speed, and the adjusting method comprises the following steps: firstly, configuring a management PLC and 7 rack PLCs into a resource sharing mode; secondly, the management PLC monitors the rough rolling outlet temperature to realize the preset calculation of the rolling reduction value of the finish rolling stand, and the secondary setting calculation of the rolling reduction value of the finish rolling stand is realized based on the original data and the measured temperature of the rolled piece and the finish rolling stand; and thirdly, acquiring the temperature and threading data of each rack in real time by a signal module SM, setting a reduction value for the finish rolling rack in real time, returning to the previous step for execution if the rolling rack does not throw steel, and preparing to roll the next steel billet if the rolling rack throws steel.

Description

Real-time screw-down adjusting device of finishing mill and control method
Technical Field
The invention belongs to the technical field of automatic control of hot continuous rolling strip steel, and particularly relates to a device and a method for adjusting the frame reduction of a hot finishing mill group for strip steel in a steel mill.
Background
At present, an automatic control system of a frame set of a hot continuous rolling finishing mill for strip steel in a steel mill consists of two stages, namely L1 and L2, wherein L1 is a basic automation stage and is responsible for sending action instructions to field equipment, and L2 is a process control stage and is responsible for model calculation and parameter optimization setting. The automatic control system of the frame group of the hot continuous rolling finishing mill for the strip steel consists of two stages of L1 and L2, because a plurality of mathematical models are calculated and optimized in an L2 system, the calculated amount is large, and the L1 taking a PLC as a core cannot complete the calculation and optimization, the work can be completed only in an L2 computer with high performance. The information interaction between the L2 and the L1 is realized through an industrial Ethernet, the L1 transmits a large amount of field basic data to the L2 through the industrial Ethernet so as to calculate and optimize a mathematical model, and the L2 transmits a series of set values after calculation and optimization to the L1, so that the actions of all equipment on the rack are controlled, including rack reduction adjustment.
Specifically, when the roughing mill finishes the last rolling pass and the strip head advances to the roughing outlet thermometer, the strip is subjected to temperature detection, L2 performs calculation based on the detected temperature and other relevant data and transmits a series of set values to the L1 system, and L1 automatically adjusts each device on the stand based on the series of set values (including the stand reduction set value) received from L2, which is preset. In order to improve the setting calculation accuracy, generally, before the strip reaches the flying shear, that is, when the strip is about to enter the finishing mill stand group, the secondary setting calculation is performed by the L2 according to the measured parameters such as the strip temperature, and the series set value (including the stand rolling down set value) is transmitted to the L1 system, and the L1 automatically adjusts each device on the stand according to the received series set value from the L2, which is called secondary setting.
The strip steel enters the finishing mill frame group, namely in the finishing rolling process, the L2 does not transmit set values (including a frame rolling set value) to the L1 any more, and only after the rolling of the steel block is finished, and the L2 transmits a series of secondary set values (including a frame rolling set value) to the L1 again when the next intermediate billet is detected to reach the flying shear and is about to bite into the finishing mill frame group.
In fact, during the finish rolling, the temperature of the strip may change, the work rolls may be worn, the transverse thickness of the strip may be uneven, and so on, that is, when the basic data information provided to the L2 is changed, the set value (including the rack rolling-down set value) is not changed, which may cause the strip to have wedge, edge wave, deviation, or even waste rolling during the rolling process.
Disclosure of Invention
The device realizes resource sharing based on resource sharing of a high-performance computer module, greatly improves the calculation capacity, jointly completes calculation and optimization of a mathematical model of a rolling set value of the rolling stand, and performs high-speed communication through a quick communication module and a private network to realize real-time calculation and adjustment of the rolling set value of the rolling stand, thereby avoiding the conditions of wedge, edge wave, deviation and even rolling waste of strip steel in the rolling process of the prior finishing mill.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a real-time screw-down adjusting device of a finishing mill comprises a finishing mill group, wherein the finishing mill group consists of 7 finishing mill frames including an F1 finishing mill frame, an F2 finishing mill frame, an F3 finishing mill frame, an F4 finishing mill frame, an F5 finishing mill frame, an F6 finishing mill frame and an F7 finishing mill frame. During production, after being rolled by a rough rolling mill, a steel billet is called an intermediate billet, and the intermediate billet is rolled by an F1 finishing mill frame, an F2 finishing mill frame, an F3 finishing mill frame, an F4 finishing mill frame, an F5 finishing mill frame, an F6 finishing mill frame and an F7 finishing mill frame in sequence to form a product with a certain target thickness.
Therefore, the device is provided with a set of finish rolling rack PLC for each finish rolling rack, and the finish rolling rack PLC is provided with a power supply module, a central processing unit, a high-performance computing module, a quick communication module, an industrial Ethernet module and a signal module which are arranged on a bottom plate. The system comprises a power module, a central processing unit, a high-performance computing module, a quick communication module, an industrial Ethernet module and a signal module, wherein the quick communication module, the industrial Ethernet module and the signal module are used for carrying out instant communication through a data bus on a bottom plate.
Meanwhile, a set of management PLC is configured, the PLC is configured with a power supply module, a central processing unit, a high-performance computing module and a quick communication module which are installed on the bottom plate, and the power supply module, the central processing unit, the high-performance computing module and the quick communication module carry out instant communication through a data bus on the bottom plate. The management PLC, the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC are communicated with each other at high speed through respective quick communication modules TN and TN private networks.
The central processing unit is responsible for executing a basic automation control program; the high-performance computer module has the calculation capacity of a certain scale, and 8 high-performance calculation modules can meet the calculation and optimization of a mathematical model of a reduction set value of the finish rolling stand after resources are shared; the rapid communication module is 0.1ms in speed and is responsible for managing high-speed data transmission between the PLC and the 7 precision rolling stand PLCs and realizing information transmission and interlocking control of a central processing unit program of the precision rolling stand; the industrial Ethernet module realizes data communication between the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC and an existing L2 system through an industrial Ethernet, and the signal module is responsible for acquiring real-time data such as temperature.
The management PLC has the management function of resource allocation and sharing, the management PLC configures the high-performance computing module of the management PLC and the high-performance computing modules of the F1 finishing mill stand PLC, the F2 finishing mill stand PLC, the F3 finishing mill stand PLC, the F4 finishing mill stand PLC, the F5 finishing mill stand PLC, the F6 finishing mill stand PLC and the F7 finishing mill stand PLC into a resource sharing mode, resource sharing is realized through a private network, the computing capability is greatly improved, and the computation and optimization of the reduction set value mathematical model of the finishing mill stand are jointly completed.
The management PLC participates in calculation and optimization of the mathematical model of the reduction set value of the finishing mill stand, and also performs load distribution management, reduction set value distribution management, failure information storage management, and the like of 7 PLC high-performance calculation modules such as an F1 finishing mill stand PLC, an F2 finishing mill stand PLC, an F3 finishing mill stand PLC, an F4 finishing mill stand PLC, an F5 finishing mill stand PLC, an F6 finishing mill stand PLC, and an F7 finishing mill stand PLC.
The method for adjusting the frame draft of the finishing mill group comprises the following steps:
(1) and the management PLC configures the high-performance computing modules of the management PLC and the high-performance computing modules of F1, F2, F3, F4, F5, F6 and F7 finish rolling stand PLCs 7 finish rolling stand PLCs into a resource sharing mode, and then executes the step (2).
(2) The management PLC receives rolled piece and raw data of a finish rolling stand from L2, and then judges whether the rough rolling mill finishes the last pass and whether the head of the strip blank advances to a rough rolling outlet thermodetector; if the roughing mill does not finish the last pass and the head of the strip blank does not move forward to the roughing outlet thermodetector, continuing to wait; if the rough rolling mill finishes the last pass and the head of the strip blank moves forward to a rough rolling outlet thermometer, a signal module collects data such as temperature in real time, and in a resource sharing mode, calculation and optimization of a reduction mathematical model of the finish rolling mill are carried out within a very short time (100 milliseconds) based on data such as raw data of the rolled piece, original data of the finish rolling mill and measured temperature, and after calculation and optimization are completed, a management PLC respectively distributes reduction setting values to the PLCs of the F1 finish rolling mill, the F2 finish rolling mill, the F3 finish rolling mill, the F4 finish rolling mill, the F5 finish rolling mill, the F6 finish rolling mill and the F7 finish rolling mill, and PLC of 7 stands are preset calculation.
Then, judging whether the thermal detector before the flying shear detects that the intermediate blank does not exist; if the intermediate blank is not detected by the thermal detector before the flying shear, continuing waiting; if the intermediate billet is detected by the pre-flying shear heat detector, data such as temperature and the like are collected in real time by the signal module, calculation and optimization of a reduction mathematical model of the finishing mill frame are carried out within a very short time (100 milliseconds) based on data such as original data of rolled pieces, the finishing mill frame and the like in a resource sharing mode, and after the calculation and optimization are completed, the management PLC respectively distributes reduction setting values to the PLCs of F1 finishing mill frames PLC, F2 finishing mill frames PLC, F3 finishing mill frames PLC, F4 finishing mill frames PLC, F5 finishing mill frames PLC, F6 finishing mill frames PLC and F7 finishing mill frame PLC7 frames according to the calculation and optimization results of the reduction mathematical model, so that secondary setting calculation is realized.
Then, judging that the F1 finish rolling machine frame does not bite steel; if the F1 finish rolling machine frame does not bite steel, continuing waiting; if the F1 finish rolling stand has bitten steel, then the step (3) is continued.
(3) The method comprises the steps that a signal module SM collects temperature and threading data of all racks in real time, calculation and optimization of a reduction mathematical model of the finish rolling rack are carried out within an extremely short time (100 milliseconds) based on original data of a rolled piece and the finish rolling rack, actually measured temperature and the threading data of all the racks in a resource sharing mode, and after calculation and optimization are completed, a management PLC distributes reduction setting values to PLCs of F1 finish rolling racks, F2 finish rolling racks, F3 finish rolling racks, F4 finish rolling racks, F5 finish rolling racks, F6 finish rolling racks and F7 finish rolling racks, 7 racks respectively according to calculation and optimization results, and real-time setting calculation is achieved.
Then judging whether the current rolling frame throws steel or not; namely, judging that the rolling stand of the F1 finishing mill stand PLC, the F2 finishing mill stand PLC, the F3 finishing mill stand PLC, the F4 finishing mill stand PLC, the F5 finishing mill stand PLC and the F6 finishing mill stand PLC has no rolled steel; if the current rolling frame does not throw steel, returning to the step (3) for execution; such as
If the current rolling frame has thrown steel, judging that the F7 frame has not thrown steel;
if the F7 machine frame does not throw steel, returning to the step (3) for execution; and (3) if the F7 stand has been thrown, returning to the step (2) for execution, and starting to prepare for rolling the next billet.
Therefore, the rolling mill is circularly reciprocated, the rolling setting value is adjusted in real time, and the rolling mill is really controlled in real time.
Compared with the prior art, the invention has the following specific beneficial effects: the invention provides a real-time pressing adjusting device and an adjusting method for a finish rolling rack, which realize the real-time calculation and adjustment of a pressing set value of the finish rolling rack, and avoid the conditions of wedge shape, edge wave, deviation and even rolling waste of strip steel caused by the fact that the temperature of the strip steel changes, the abrasion of a working roll, the transverse thickness of the strip steel is not changed and the like, and the pressing set value of the rack does not change in the rolling process of the finish rolling machine at present.
Drawings
FIG. 1 shows a real-time reduction adjustment device for a finishing mill stand.
FIG. 2 is a flow chart of a method for adjusting the reduction of a stand of a finishing mill group.
In the figure, PS is a power module, CPU is a central processing unit, GU is a high performance computing module, TN is a fast communication module, EN is an industrial ethernet module, and SM is a signal module.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the device is provided with a set of finish rolling stand PLC for each finish rolling stand, and the finish rolling stand PLC is configured with a power supply module PS, a central processing unit CPU, a high performance computing module GU, a fast communication module TN, an industrial ethernet module EN, a signal module SM, and a bottom plate. The power supply module PS, the central processing unit CPU, the high-performance computing module GU, the rapid communication module TN, the industrial Ethernet module EN and the signal module SM are all installed on the bottom plate, and instant communication is carried out through a data bus on the bottom plate.
Meanwhile, a set of management PLC is configured, the management PLC is configured with a power supply module PS, a central processing unit CPU, a high-performance computing module GU, a fast communication module TN and a bottom plate, and the power supply module PS, the central processing unit CPU, the high-performance computing module GU and the fast communication module TN are all installed on the bottom plate and carry out instant communication through a data bus on the bottom plate. The management PLC, the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC are communicated with each other at high speed through respective quick communication modules TN and TN private networks.
The CPU is responsible for executing a basic automation control program; the high-performance computer modules GU have the calculation capacity of a certain scale, and 8 high-performance computer modules GU can meet the calculation and optimization of a mathematical model of a rolling set value of a finish rolling stand after resources are shared; the quick communication module TN is 0.1ms and is responsible for managing high-speed data transmission between the PLC and the 7 finish rolling stand PLCs and realizing information transmission and interlocking control of the finish rolling stand CPU program; the industrial Ethernet module EN realizes data communication between the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC and an existing L2 system through an industrial Ethernet; the signal module SM is responsible for collecting real-time data such as temperature.
The management PLC has the management function of resource allocation and sharing, the management PLC configures the high-performance computing module GU of the management PLC and the high-performance computing modules GU of the F1 finish rolling stand PLC, the F2 finish rolling stand PLC, the F3 finish rolling stand PLC, the F4 finish rolling stand PLC, the F5 finish rolling stand PLC, the F6 finish rolling stand PLC and the F7 finish rolling stand PLC into a resource sharing mode, resource sharing is achieved through a TN private network, computing capacity is greatly improved, and computing and optimization of a mathematical model of a reduction set value of the finish rolling stand are completed together.
The management PLC participates in calculation and optimization of the mathematical model of the reduction set value of the finishing mill stand, and also manages load distribution management, reduction set value distribution management, failure information storage management, and the like of 7 sets of PLC high-performance calculation modules such as an F1 finishing mill stand PLC, an F2 finishing mill stand PLC, an F3 finishing mill stand PLC, an F4 finishing mill stand PLC, an F5 finishing mill stand PLC, an F6 finishing mill stand PLC, and an F7 finishing mill stand PLC.
When the finishing mill is produced, the adjusting process of the rolling reduction of the frame of the finishing mill group is as follows:
(1) and the management PLC configures the high-performance computing modules of the management PLC and the high-performance computing modules of F1, F2, F3, F4, F5, F6 and F7 finish rolling stand PLCs 7 finish rolling stand PLCs into a resource sharing mode, and then executes the step (2).
(2) The management PLC receives rolled pieces from L2 and original data of a finish rolling stand, and then judges whether the rough rolling mill finishes the last pass and the head of the strip blank advances to a rough rolling outlet thermodetector; if the roughing mill does not finish the last pass and the head of the strip blank does not move forward to the roughing outlet thermodetector, waiting; if the rough rolling mill finishes the last pass and the head of the strip blank moves forward to a rough rolling outlet thermometer, a signal module SM collects data such as temperature in real time, and in a resource sharing mode, calculation and optimization of a reduction mathematical model of the finish rolling mill are carried out within a very short time (100 milliseconds) based on the data such as the original data of the rolled piece, the original data of the finish rolling mill and the measured temperature, and after calculation and optimization are completed, a management PLC respectively distributes reduction set values to the PLCs of 7 stands such as an F1 finish rolling mill stand PLC, an F2 finish rolling mill stand PLC, an F3 finish rolling mill stand PLC, an F4 finish rolling mill stand PLC, an F5 finish rolling mill stand PLC, an F6 finish rolling mill stand PLC and an F7 finish rolling mill stand PLC, and preset calculation is realized.
Then, judging whether the intermediate billet is detected by a thermal detector before flying shears; if the intermediate blank is not detected by the thermal detector before the flying shear, waiting; if the intermediate billet is detected by the pre-flying shear heat detector, data such as temperature and the like are collected in real time by the signal module SM, calculation and optimization of a reduction mathematical model of the finishing mill frame are carried out within a very short time (100 milliseconds) based on data such as original data of a rolled piece, the finishing mill frame and the like in a resource sharing mode, and after calculation and optimization are completed, the management PLC respectively distributes reduction setting values to the PLCs of 7 frames such as an F1 finishing mill frame PLC, an F2 finishing mill frame PLC, an F3 finishing mill frame PLC, an F4 finishing mill frame PLC, an F5 finishing mill frame PLC, an F6 finishing mill frame PLC, an F7 finishing mill frame PLC and the like according to the calculation and optimization results of the reduction mathematical model, so that secondary setting calculation is realized.
Then, judging that the F1 finish rolling stand does not bite steel; if the F1 finish rolling machine frame does not bite steel, continuing waiting; if the F1 finish rolling stand has bitten, then step (3) is continued.
(3) The method comprises the steps that a signal module SM collects temperature and threading data of all racks in real time, calculation and optimization of a reduction mathematical model of a finish rolling rack are carried out within a very short time (100 milliseconds) based on rolled pieces, original data of the finish rolling rack, actually measured temperature and threading data of all the racks in a resource sharing mode, and after calculation and optimization are completed, a management PLC distributes reduction setting values to PLCs of F1, F2, F3, F4, F5, F6 and F7 PLC7 racks respectively according to the reduction mathematical model, so that real-time setting calculation is realized.
Then, judging whether the current rolling frame throws steel or not; namely, judging whether the rolling machine frame in the F1, F2, F3, F4, F5 and F6 finish rolling machine frames PLC finish rolling steel or not; if the current rolling frame does not throw steel, returning to the step (3) for execution; if the current rolling stand has thrown steel, judging that the F7 stand does not throw steel;
if the F7 machine frame does not throw steel, returning to the step (3) for execution; and (3) if the F7 stand has been thrown, returning to the step (2) for execution, and starting to prepare for rolling the next billet.
The device sets up a set of PLC for every finish rolling frame, and this PLC disposes power module, central processing unit, high performance calculation module, quick communication module, industry ethernet module, signal module and bottom plate. The power module, the central processing unit, the high-performance computing module, the rapid communication module, the industrial Ethernet module and the signal module are arranged on the bottom plate, and instant communication is carried out through a data bus on the bottom plate. Simultaneously, dispose one set of management PLC, this PLC configuration power module, central processing unit, high performance computing module, quick communication module and bottom plate, power module, central processing unit, high performance computing module, quick communication module install on the bottom plate to carry out instant messaging through the data bus on the bottom plate. The management PLC, the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC are communicated with each other at high speed through respective quick communication modules and private networks.
The CPU is responsible for executing a basic automation control program; the high-performance computer module has certain scale calculation capacity, and 8 high-performance calculation modules can meet the calculation and optimization of a mathematical model of a reduction set value of the finish rolling stand after resources are shared; the quick communication module TN is 0.1ms and is responsible for managing high-speed data transmission between the PLC and the 7 finish rolling stand PLCs and realizing information transmission and interlocking control of the finish rolling stand CPU program; the industrial Ethernet module EN realizes data communication between the F1 finishing mill PLC, the F2 finishing mill PLC, the F3 finishing mill PLC, the F4 finishing mill PLC, the F5 finishing mill PLC, the F6 finishing mill PLC and the F7 finishing mill PLC and an existing L2 system through an industrial Ethernet; the signal module is responsible for collecting real-time data such as temperature.
The management PLC has the management function of resource allocation and sharing, the management PLC configures the high-performance computing module of the management PLC and the high-performance computing modules GU of the F1 finish rolling stand PLC, the F2 finish rolling stand PLC, the F3 finish rolling stand PLC, the F4 finish rolling stand PLC, the F5 finish rolling stand PLC, the F6 finish rolling stand PLC and the F7 finish rolling stand PLC into a resource sharing mode, resource sharing is realized through a private network, the computing capability is greatly improved, and the computing and the optimization of the reduction set value mathematical model of the finish rolling stand are jointly completed.
The management PLC participates in calculation and optimization of the mathematical model of the reduction set value of the finishing mill stand, and also manages load distribution management, reduction set value distribution management, failure information storage management, and the like of 7 sets of PLC high-performance calculation modules such as an F1 finishing mill stand PLC, an F2 finishing mill stand PLC, an F3 finishing mill stand PLC, an F4 finishing mill stand PLC, an F5 finishing mill stand PLC, an F6 finishing mill stand PLC, and an F7 finishing mill stand PLC.
And (II) during production of the finishing mill, the rolling reduction adjusting process of the frame of the finishing mill group is as follows:
A. the management PLC configures its own high-performance computing module with high-performance computing modules of 7 finishing mill stand PLCs, such as F1 finishing mill stand PLC, F2 finishing mill stand PLC, F3 finishing mill stand PLC, F4 finishing mill stand PLC, F5 finishing mill stand PLC, F6 finishing mill stand PLC, and F7 finishing mill stand PLC, into a resource sharing mode, and then performs step (2).
B. The management PLC receives product and finish stand raw data from L2. Then, judging whether the rough rolling mill finishes the last pass or not and the head of the strip blank moves forward to a rough rolling outlet thermodetector; if the roughing mill does not finish the last pass and the head of the strip blank does not move forward to the roughing outlet thermodetector, waiting; if the rough rolling mill finishes the last pass and the head of the strip blank moves forward to a rough rolling outlet thermometer, a signal module SM collects data such as temperature in real time, and in a resource sharing mode, calculation and optimization of a reduction mathematical model of the finish rolling mill are carried out within a very short time (100 milliseconds) based on the data such as the original data of the rolled piece, the original data of the finish rolling mill and the measured temperature, and after calculation and optimization are completed, a management PLC respectively distributes reduction set values to the PLCs of 7 stands such as an F1 finish rolling mill stand PLC, an F2 finish rolling mill stand PLC, an F3 finish rolling mill stand PLC, an F4 finish rolling mill stand PLC, an F5 finish rolling mill stand PLC, an F6 finish rolling mill stand PLC and an F7 finish rolling mill stand PLC, and preset calculation is realized.
Then, judging that the intermediate blank is detected to be absent by a thermal detector before flying shears; if the intermediate blank is not detected by the thermal detector before the flying shear, continuing waiting; if the intermediate billet is detected by the pre-flying shear heat detector, data such as temperature and the like are collected in real time by the signal module SM, calculation and optimization of a reduction mathematical model of the finishing mill frame are carried out within a very short time (100 milliseconds) based on data such as original data of a rolled piece, the finishing mill frame and the like in a resource sharing mode, and after calculation and optimization are completed, the management PLC respectively distributes reduction setting values to the PLCs of 7 frames such as an F1 finishing mill frame PLC, an F2 finishing mill frame PLC, an F3 finishing mill frame PLC, an F4 finishing mill frame PLC, an F5 finishing mill frame PLC, an F6 finishing mill frame PLC, an F7 finishing mill frame PLC and the like according to the calculation and optimization results of the reduction mathematical model, so that secondary setting calculation is realized.
Then, judging that the F1 finish rolling machine frame does not bite steel; if the F1 finish rolling machine frame does not bite steel, waiting; if the F1 finish rolling stand has bitten steel, then step (3) is continued.
C. The method comprises the steps that a signal module collects temperature and threading data of each rack in real time, calculation and optimization of a reduction mathematical model of a finishing mill rack are carried out within a very short time (100 milliseconds) based on original data of rolled pieces and finishing mill racks, actually measured temperature and threading data of each rack in a resource sharing mode, and after calculation and optimization are completed, a management PLC distributes reduction set values to PLCs of 7 racks such as an F1 finishing mill rack PLC, an F2 finishing mill rack PLC, an F3 finishing mill rack PLC, an F4 finishing mill rack PLC, an F5 finishing mill rack PLC, an F6 finishing mill rack PLC and an F7 finishing mill rack PLC respectively according to the calculation and optimization results of the reduction mathematical model, so that real-time setting calculation is achieved.
Then, judging that no steel throwing of the current rolling frame exists; namely, judging that the rolling stand of the F1 finishing mill stand PLC, the F2 finishing mill stand PLC, the F3 finishing mill stand PLC, the F4 finishing mill stand PLC, the F5 finishing mill stand PLC and the F6 finishing mill stand PLC has no rolled steel; if the current rolling frame does not throw steel, returning to the step (3) for execution; if the current rolling frame has thrown steel, judging whether the F7 finish rolling frame throws steel or not;
if the F7 machine frame does not throw steel, returning to the step (3) for execution; and if the F7 stand has been thrown, returning to the step (2) for execution, and starting to prepare for rolling the next billet.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.

Claims (3)

1. A real-time screw-down adjusting device of a finishing mill comprises a finishing mill group, wherein the finishing mill group consists of an F1 finishing mill frame, an F2 finishing mill frame, an F3 finishing mill frame, an F4 finishing mill frame, an F5 finishing mill frame, an F6 finishing mill frame and an F7 finishing mill frame, and is characterized in that each finishing mill frame is provided with a frame PLC (programmable logic controller), and each frame PLC consists of a power supply module, a central processing unit, a computing module, a communication module, an industrial Ethernet module and a signal module which are arranged on a bottom plate;
configuring a set of management PLC, wherein the management PLC is provided with a power supply module, a central processing unit, a calculation module and a communication module;
the management PLC communicates with each rack PLC through respective communication modules TN and TN private networks.
2. The real-time screw-down adjusting device of a finishing mill according to claim 1, wherein the central processing unit CPU is responsible for basic automation control process execution, and the calculation module of the management PLC and the calculation modules of the 7 stand PLCs can satisfy mathematical model calculation and optimization of the screw-down setting value of the finishing mill stand after resource sharing;
the speed of the communication module is 0.1ms, and the communication module is responsible for managing data transmission between the PLC and 7 rack PLCs and realizing information transmission and interlocking control of the rack PLCs;
the industrial Ethernet module realizes data communication between the 7 rack PLCs and the existing L2 system through an industrial Ethernet;
the signal module is responsible for acquiring real-time temperature data;
the management PLC has the management function of resource allocation and sharing, a computing module of the management PLC and computing modules of the PLC of the 7 racks are configured into a resource sharing mode, resource sharing is realized through a private network, and the calculation and optimization of a mathematical model of a reduction set value of the finish rolling rack are completed together;
the management PLC also manages load distribution management, press-down setting value distribution management, and storage management of failure information of the calculation modules of the 7 rack PLCs.
3. The real-time screw-down adjusting method of the finishing mill according to claim 1, characterized by comprising the following specific steps:
firstly, a high-performance computing module of a management PLC and a high-performance computing module of each finish rolling stand PLC form a resource sharing mode;
secondly, the management PLC receives original data from the rolled piece and the finish rolling stand, and judges whether the rough rolling mill finishes the last pass and the head of the strip blank advances to a rough rolling outlet thermodetector;
if the roughing mill does not finish the last pass and the head of the strip blank does not move forward to the roughing outlet thermodetector, continuing to wait; if the roughing mill finishes the last pass and the head of the strip blank moves forward to a roughing outlet thermodetector, acquiring temperature data in real time by a signal module, calculating and optimizing a reduction mathematical model of the finishing mill frame based on the original data and the actually measured temperature data of the rolled piece and the finishing mill frame in a resource sharing mode by a management PLC (programmable logic controller), and distributing a reduction set value to each finishing mill frame PLC by the management PLC according to the calculation and optimization results of the reduction mathematical model to realize preset calculation;
judging whether the thermal detector before the flying shear detects the intermediate blank or not, and if the thermal detector before the flying shear does not detect the intermediate blank, continuing to wait; if the thermal detector before the flying shear detects the intermediate blank, a signal module collects temperature data in real time, calculation and optimization of a rolling mill frame pressing mathematical model are carried out based on original data and actually measured temperature data of a rolling mill and a finishing mill in a resource sharing mode, and a management PLC distributes pressing set values for all the rolling mill frame PLCs according to calculation and optimization results of the pressing mathematical model to realize secondary setting calculation;
judging whether the F1 finish rolling rack arranged at the head end bites steel or not, and if the F1 finish rolling rack does not bite steel, continuing waiting; if the F1 finishing mill bites steel, continuing to execute the process;
thirdly, acquiring temperature and threading data of each finish rolling stand in real time by a signal module SM, calculating and optimizing a reduction mathematical model of the finish rolling stand based on original data of a rolled piece and the finish rolling stand, actually measured temperature and threading data of each finish rolling stand in a resource sharing mode, and after the calculation and optimization are completed, distributing reduction set values for each finish rolling stand PLC by a management PLC according to the calculation and optimization structure of the reduction mathematical model to realize real-time setting calculation;
judging whether the current rolling stand throws steel or not, namely judging whether the F1 finishing rolling stand, the F2 finishing rolling stand, the F3 finishing rolling stand, the F4 finishing rolling stand, the F5 finishing rolling stand and the F6 finishing rolling stand finish rolling; if the current rolling frame does not throw steel, returning to the third step for execution; if the F1 finish rolling machine frame, the F2 finish rolling machine frame, the F3 finish rolling machine frame, the F4 finish rolling machine frame, the F5 finish rolling machine frame and the F6 finish rolling machine frame are subjected to steel throwing, judging whether the F7 finish rolling machine frame is subjected to steel throwing;
if the F7 finish rolling rack does not throw steel, returning to the third step for execution; if the F7 finish rolling rack has thrown steel, returning to the step two for execution, and beginning to prepare for rolling the next steel billet;
and the circulation is repeated, so that the real-time adjustment of the pressing set value of the finish rolling rack is realized, and the real-time control of the pressing of the finish rolling rack is realized.
CN202210249462.1A 2022-03-15 2022-03-15 Real-time screw-down adjusting device of finishing mill and control method Pending CN114570766A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210249462.1A CN114570766A (en) 2022-03-15 2022-03-15 Real-time screw-down adjusting device of finishing mill and control method
CN202210705304.2A CN114798729A (en) 2022-03-15 2022-06-21 Real-time screw-down adjusting device of finishing mill and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210249462.1A CN114570766A (en) 2022-03-15 2022-03-15 Real-time screw-down adjusting device of finishing mill and control method

Publications (1)

Publication Number Publication Date
CN114570766A true CN114570766A (en) 2022-06-03

Family

ID=81780411

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202210249462.1A Pending CN114570766A (en) 2022-03-15 2022-03-15 Real-time screw-down adjusting device of finishing mill and control method
CN202210705304.2A Pending CN114798729A (en) 2022-03-15 2022-06-21 Real-time screw-down adjusting device of finishing mill and control method

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202210705304.2A Pending CN114798729A (en) 2022-03-15 2022-06-21 Real-time screw-down adjusting device of finishing mill and control method

Country Status (1)

Country Link
CN (2) CN114570766A (en)

Also Published As

Publication number Publication date
CN114798729A (en) 2022-07-29

Similar Documents

Publication Publication Date Title
CN106779220B (en) Steelmaking-continuous casting-hot rolling integrated scheduling method and system
CN102591286B (en) Online rolling plan dynamic pre-analysis and self-adjustment system and method
CN111438193B (en) Control method and control system for preventing rear-end collision during rolling of rough rolling slab
CN106903172B (en) It is a kind of to realize steel plate in the control method of rolling different zones position tracking switching
CN100518976C (en) Optimization control method for intermediate blanket heating device
CN109583761A (en) A kind of Production-Plan and scheduling system of forged steel process
CN110614352B (en) Thick plate continuous casting blank cutting control system and assembly optimization calculation method thereof
CN111229829B (en) Full-multiple-length bar processing equipment and process
CN101382798B (en) Process setting method for single-frame double-coiling aluminium hot-rolling mill
CN111768081A (en) Method and system for calculating product manufacturing energy consumption in hybrid manufacturing environment
CN204503751U (en) A kind of hot-tandem unit production line reducing roller consumption
CN109926452B (en) Process control method, process control device and terminal applied to steel rolling
CN104942250A (en) Online continuous casting billet preset width setting and tracking method
CN107505907A (en) A kind of bar line-rolling automation control system and control method
CN114570766A (en) Real-time screw-down adjusting device of finishing mill and control method
CN113351651B (en) Hot-rolling line full-automatic heating furnace tapping control method based on big data analysis
CN100515593C (en) Normal four-roller hot strip steel continuous rolling mill strip steel edge thickening integrated controlling method
CN112329089B (en) Hot rolling rod wire rod full-process temperature field calculation system based on rolling program table
CN113275385B (en) Method for dynamically controlling to-be-rolled position of single-stand rolling mill
CN115090691B (en) Automatic reverse correction control method of wide and thick plate pre-straightening machine based on thickness classification
CN204220617U (en) A kind of steekle mill production line preparing roughing mill
CN103562938A (en) Cane preparation unit and method of operation
CN206854363U (en) A kind of bar continuous rolling eliminates the overproof control device of tail dimension
CN110508615A (en) A kind of high-speed bar mill two-wire rolling mill practice device and method
Liu et al. Application of Simulation in Optimization Design of Casting Billet

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20220603

WD01 Invention patent application deemed withdrawn after publication