CN112068506A - Automatic, rapid and accurate continuous casting blank width forecasting method - Google Patents
Automatic, rapid and accurate continuous casting blank width forecasting method Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by quality surveillance of production
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32368—Quality control
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- 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
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- 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]
Abstract
The invention discloses an automatic, rapid and accurate forecasting method for the width of a continuous casting blank, and belongs to the technical field of steelmaking and continuous casting. The invention establishes a model between the actual width of the casting blank and the main influence factors, acquires and matches the casting blank information such as a pulling rate curve, a casting length curve, a steel type, a furnace number, a lower opening width of a crystallizer and the like in the production of a continuous casting machine through a data acquisition system, a continuous casting primary system and a continuous casting secondary system, establishes communication between the data acquisition system and a QMS management application platform, transmits corresponding data to the QMS management application platform for calculating the width of the casting blank, and feeds back the calculation result to a hot rolling production line, thereby being capable of automatically, quickly and accurately forecasting the width of the continuous casting blank, reducing the deviation between the actual width and the theoretical width of the casting blank, reducing the workload of width measurement after the casting blank is put in storage, improving the accuracy of the width control of a hot rolling mill, and ensuring the production efficiency and the product quality.
Description
Technical Field
The invention belongs to the technical field of steelmaking and continuous casting, and particularly relates to an automatic, rapid and accurate forecasting method for the width of a continuous casting blank.
Background
The measurement results of the widths of the casting blanks with different steel types and different sections show that the actual width of the casting blank is increased by a certain amount relative to the width of the lower opening of the crystallizer, namely the width expansion amount, and the width expansion amount is related to the steel type, the width, the pulling speed and other factors of the casting blank. If the width of the casting blank recorded in the hot rolling system has larger deviation with the actual width, the rolling of the casting blank is influenced, the casting blank is retracted due to the overlarge actual width, the centering of the casting blank is influenced due to the undersize actual width, and the hit precision of the width of a hot rolled finished product can also be influenced. Therefore, the width information of the casting blank is inaccurate, the workload of manually measuring the width of the casting blank is increased, the turnover of the casting blank is influenced, the production efficiency and the product quality of a hot rolling production line can be reduced, and the order cashing is influenced.
At present, most steel mills do not have equipment for measuring the width of a casting blank, the width of the casting blank in a continuous casting secondary system is only the theoretical width, and a hot rolling production line is used for rolling the casting blank by adjusting the width of a side guide according to the theoretical width of the casting blank, so that the problem that the deviation between the actual width of the casting blank and the theoretical width in the continuous casting secondary system is large exists, if manual width measurement is carried out on different positions of the casting blank, the measurement difficulty can be increased due to different spread amounts, the production efficiency can be reduced due to the fact that the width information of the casting blank is manually measured and recorded, the labor cost is increased, and the quality of hot rolled.
Through retrieval, relevant patents on the measurement of the width of the casting blank are disclosed. For example, chinese patent application No. 201811502383.7 discloses a method for measuring the length and width of a slab, comprising the steps of: step 1, setting a continuous casting blank measuring area; step 2, installing a measuring grating at an outlet of the measuring area; step 3, symmetrically installing a pair of telescopic cylinders at two sides of the measuring area; step 4, starting the transmission equipment of the continuous casting billet to enter a measurement program; step 5, in the step 4, recording the extension length of each telescopic cylinder as D2; and 6, calculating the length L of the continuous casting slab to be L1-L2 and the width D of the continuous casting slab to be D1-D2-D3 according to the measured data. Although the application can measure the width of the continuous casting blank, the method of the application is complicated, the structure is complex, the width of the casting blank cannot be rapidly forecasted, and the overall design of the application needs to be further improved.
Disclosure of Invention
1. Problems to be solved
The invention aims to solve the problems that the deviation between the actual width of a casting blank and the theoretical width in a continuous casting secondary system is large, the manual width measurement difficulty is high, the efficiency is low, and the product quality cannot be guaranteed at present, and provides an automatic, rapid and accurate continuous casting blank width forecasting method. By adopting the technical scheme of the invention, the width of the continuous casting blank can be automatically, quickly and accurately forecasted, the deviation between the actual width and the theoretical width of the casting blank is reduced, the workload of width measurement after the casting blank is put in storage is reduced, the accuracy of the hot rolling mill on width control is improved, and the production efficiency and the product quality are ensured.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention discloses an automatic, rapid and accurate forecasting method for the width of a continuous casting blank, which is characterized by comprising the following steps of:
step one, continuous casting primary system data acquisition
Collecting a casting machine drawing speed curve and a casting length curve through an encoder A and transmitting the curves to a continuous casting primary system;
step two, continuous casting secondary system data acquisition
Collecting a cutting signal of a casting blank through an encoder B, transmitting the cutting signal to a continuous casting secondary system through a continuous casting primary system, and analyzing and processing to obtain the initial position, the length and the end position of the casting blank;
step three, data matching and archiving
The data acquisition system respectively acquires a pulling speed curve and a casting length curve in the primary system and a casting blank starting position, a casting blank length and an ending position in the secondary system through a data acquisition machine, and then data matching is carried out to obtain pulling speed data in different casting blank length directions and upload the pulling speed data to a database in the data acquisition system;
step four, establishing communication
Both the QMS management application platform and the data acquisition system transmit data in a request-response mode in a TCP/IP communication mode, so that pulling rate curve data corresponding to the casting blank can be obtained from the data acquisition system;
step five, calculating the width of the casting blank
After receiving corresponding information provided by the data acquisition system, the QMS management application platform calls a casting blank width calculation function to calculate the width of the casting blank;
step six, feeding back to the hot rolling production system
And feeding back the width calculation result in the QMS management application platform to the hot rolling production system.
Further, the casting blank width calculation function is F (Mw, Vm) ═ Mw + (Vm-Vk) × Kw, Mw is the width of the bottom opening of the mold, Vm is the casting real-time casting speed, Kw is the width constant, and Vk is the casting speed constant.
Furthermore, Kw and Vk are obtained by measuring actual widths of casting blanks of different steel types, different widths and different pulling speeds and performing regression analysis on the actual widths of the casting blanks of the different steel types, the pulling speeds of the casting blanks and the width of a lower opening of a crystallizer.
Furthermore, the continuous casting primary system also transmits the furnace number, the steel grade and the width data of the lower opening of the crystallizer to the continuous casting secondary system together to trigger a casting blank output event of the continuous casting secondary system.
Furthermore, the data acquisition system comprises an data acquisition machine and a data acquisition server, wherein the input end of the data acquisition machine is respectively connected with the continuous casting primary system and the continuous casting secondary system, the output end of the data acquisition machine is connected with the data acquisition server, the data acquisition server is in communication connection with the QMS management application platform in a TCP/IP communication mode, and the QMS management application platform is electrically connected with the continuous casting secondary system.
Furthermore, after receiving the casting blank output event of the continuous casting secondary system, the QMS management application platform requests the corresponding pulling rate curve data from the data acquisition system according to the concrete information of the casting blank, and after receiving the request, the data acquisition platform transmits the pulling rate curve data corresponding to the casting blank to the QMS management application platform.
Furthermore, the encoder A is arranged on the sector section of the continuous casting machine.
Furthermore, the encoder B is arranged on the measuring roller of the flame cutting machine.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention relates to a method for automatically, quickly and accurately forecasting the width of a continuous casting blank, which establishes a model between the actual width of the casting blank and a main influence factor, and adopts a data acquisition system, a continuous casting primary system and a continuous casting secondary system, collecting and matching casting blank information such as a casting speed curve, a casting length curve, a steel type, a furnace number, a crystallizer lower opening width and the like in the production of a continuous casting machine, establishing communication between a data collection system and a QMS management application platform, transmitting corresponding data to the QMS management application platform for casting blank width calculation, feeding a calculation result back to a hot rolling production line, therefore, the width of the continuous casting blank can be automatically, quickly and accurately forecasted, the deviation between the actual width and the theoretical width of the casting blank is effectively reduced, the workload of width measurement after the casting blank is put in storage is reduced, the accuracy of the hot rolling mill on width control is improved, and the production efficiency and the product quality are ensured.
(2) According to the method for automatically, quickly and accurately forecasting the width of the continuous casting blank, the pulling rate curve and the casting length curve in the continuous casting primary system are collected through the data collection system, the casting blank related information in the continuous casting secondary system is collected at the same time, the accurate matching of the pulling rate data and the casting blank information is completed according to the time sequence, and the subsequent QMS management application platform can conveniently request and receive the related data of the casting blank to calculate the width of the casting blank.
(3) The invention relates to an automatic, rapid and accurate forecasting method for the width of a continuous casting billet, which is characterized in that a QMS management application platform and a data acquisition system are communicated in a TCP/IP communication mode, a continuous casting secondary system billet output event signal immediately triggers the QMS management application platform to request data from the data acquisition system, and the data acquisition system feeds the data back to the QMS management application platform in the TCP/IP communication mode, so that the data transmission in a request-response mode is completed, and the subsequent calculation of the width of the casting billet is guaranteed.
(4) According to the automatic, rapid and accurate continuous casting blank width forecasting method, the possibility of calculating the width of the casting blank by data is realized, and the width index quantification of the casting blank is more efficient and accurate; the casting blank width estimation is automatically, quickly and accurately completed by establishing the casting blank width calculation model, the automation degree is higher, the accuracy is good, the workload of manually measuring the casting blank is reduced, the accuracy of measuring the casting blank width is improved, the turnover of the casting blank is accelerated, and the control precision and the production efficiency of the hot rolling width are improved.
Drawings
Fig. 1 is a schematic flow chart of an automatic, rapid and accurate continuous casting blank width forecasting method according to the present invention.
Detailed Description
The width of a casting blank in the current secondary system is only the theoretical width, the hot rolling production line is used for rolling the casting blank by adjusting the width of a side guide by the theoretical width of the casting blank, the deviation between the actual width and the theoretical width of the casting blank is large, the product quality of the hot rolling production line of the casting blank cannot be guaranteed, if manual width measurement is carried out on different positions of the casting blank, the measurement difficulty is increased due to different width expansion amounts, the rhythm of warehousing and ex-warehouse of the casting blank is fast, the production efficiency is reduced due to manual measurement and recording of the width information of the casting blank, and the labor cost.
Aiming at the problems, the invention provides an automatic, rapid and accurate forecasting method for the width of a continuous casting blank, which adopts a data acquisition system and a QMS management application platform, wherein the data acquisition system comprises an data acquisition machine and a data acquisition server, the input end of the data acquisition machine is respectively connected with a continuous casting primary system and a continuous casting secondary system, the output end of the data acquisition machine is connected with the data acquisition server, the data acquisition server is in communication connection with the QMS management application platform in a TCP/IP communication mode, and the continuous casting QMS management application platform is electrically connected with the continuous casting secondary system.
As shown in fig. 1, the method for automatically, rapidly and accurately forecasting the width of a continuous casting blank of the present invention specifically includes the following steps:
step one, continuous casting primary system data acquisition
The method comprises the steps of detecting a drawing speed curve and a casting length curve of the whole casting process in the production process of the continuous casting machine through an encoder A arranged on a fan-shaped section of the continuous casting machine, then transmitting detected data to a continuous casting primary system (namely a continuous casting primary PLC system) in an electric signal mode for storage, and then collecting the drawing speed curve and the casting length curve in the continuous casting primary system by an data acquisition machine and transmitting the drawing speed curve and the casting length curve to a data acquisition server.
Step two, continuous casting secondary system data acquisition
The continuous casting secondary system is electrically connected with the continuous casting primary system, and the continuous casting primary system acquires a cutting signal of a casting blank through a coder B arranged on a measuring roller of a flame cutting machine, so that the information of the casting blank number is obtained; when the casting blank starts to be cut, the encoder B starts to count, when the cutting of the casting blank is finished, the continuous casting primary system receives a signal transmitted by the encoder B and transmits the signal to the continuous casting secondary system, and the head starting position, the casting blank length and the tail end position of the casting blank are obtained through the existing model analysis processing in the continuous casting secondary system. In addition, the continuous casting primary system also transmits information such as a furnace number, a steel grade and width data of a lower opening of the crystallizer and a casting blank cutting signal to the continuous casting secondary system, a casting blank output event of the continuous casting secondary system is triggered, and finally the continuous casting secondary system sends the casting blank output event and other related specific information to the QMS management application platform.
Step three, data matching and archiving
The data acquisition system respectively acquires a pulling speed curve and a casting length curve in the primary system and casting blank starting position, casting blank length, ending position and casting blank number information in the secondary system through the data acquisition machine, and matching between the head starting position, the slab length and the tail ending position of each casting blank and the pulling speed curve of the casting blank is completed when each different casting blank is produced in the data acquisition system according to the production time of the continuous casting blank, so that pulling speed data in the length direction of each different casting blank is obtained; meanwhile, the data acquisition machine acquires information such as steel type, furnace number, casting blank number, width of a lower opening of the crystallizer and the like from the continuous casting secondary system, transmits the information to the data acquisition server together, and quickly and accurately matches influence factors related to casting blank width calculation, such as width of the lower opening of the crystallizer, steel type and the like, to the length direction of the cast blank in the data acquisition server. And then, the data matched with the casting blank is filed in a central database, so that the relevant data information can be called out at any position on the casting blank after the casting blank is produced, and the QMS management application platform can calculate the width of the casting blank.
Step four, establishing communication
The method comprises the steps that both a QMS management application platform and a data acquisition system carry out data transmission in a request-response mode in a TCP/IP communication mode, namely, after receiving a casting blank output event signal of a continuous casting secondary system, the QMS management application platform requests corresponding casting blank information from an data acquisition server, and after receiving the request, the data matched with the casting blank are fed back to the QMS management application platform by the data acquisition server.
Step five, calculating the width of the casting blank
And (3) according to the analysis result of the established casting blank width measurement database, establishing a calculation function between the corresponding casting blank width and the main influence factors of the steel grade, the width of the lower opening of the crystallizer and the casting pulling speed on a QMS management application platform in advance. And after receiving the casting blank steel grade, the pulling rate curve data, the width of the lower opening of the crystallizer and other information provided by the data acquisition server, the QMS management application platform calculates the casting blank width according to the width calculation function corresponding to the steel grade. The casting blank width calculation function is:
F(Mw，Vm)＝Mw+(Vm-Vk)×Kw；
wherein Kw is a width constant (mm), Vk is a pulling rate constant (m/min), Mw is a width (mm) of a lower opening of the crystallizer, and Vm is a casting real-time pulling rate (m/min). The pulling rate constant and the width constant corresponding to different types of steel grades are different, and the method for confirming the width constant Kw and the pulling rate constant Vk is as follows: and (3) manually measuring to obtain the actual widths of the casting blanks with different widths of different steel types, substituting the data into the casting blank width calculation function by combining the corresponding steel type types, the width of the lower opening of the crystallizer and the pulling speed data when the casting blanks are produced, and then performing regression analysis to determine the width constant Kw and the pulling speed constant Vk of the steel type.
Step six, feeding back to the hot rolling production system
And after the QMS management application platform finishes the width calculation of the casting blank, feeding the width calculation result back to the hot rolling production system.
The invention builds a database of the actual width measurement result of the casting blank, and sorts and summarizes a plurality of factors influencing the casting blank expansion, and the factors are divided into a main influence factor and a secondary influence factor according to the influence degree, under the support of big data, the invention builds a model between the actual width of the casting blank and the main influence factor (steel grade, pulling speed, width of a lower opening of a crystallizer), collects the information which can mark the casting blank, such as a pulling speed curve, a casting flow casting length curve, a steel grade, a furnace number, the width of a lower opening of the crystallizer and the like in the production of a continuous casting machine through a data acquisition system, a continuous casting primary system and a continuous casting secondary system, then carries out data matching, builds a corresponding data relation in the data acquisition system, then carries out casting blank width calculation according to the obtained data information by utilizing a QMS management application platform, and feeds back the calculation result to a hot rolling production system, therefore, the width of the continuous casting blank can be automatically, quickly and accurately forecasted, the deviation between the actual width and the theoretical width of the casting blank is reduced, the deviation between the calculated value of the width of the casting blank and the actual width of the casting blank is within the range of +/-5 mm, the accuracy of the width information recorded in the storage of the casting blank is greatly improved, the workload of manual measurement of the width of the casting blank is reduced, the width control precision of hot rolling on the blank is improved, and the production efficiency and the product quality are guaranteed.
The invention collects the pulling rate curve and the casting length curve in the continuous casting primary system through the data collection system, collects the corresponding information of steel type information, casting times, the width of the lower opening of the crystallizer, the furnace number, the casting blank number and the like in the continuous casting secondary system, and quickly and accurately matches the real-time pulling rate of the casting flow to the casting length direction according to the time sequence, thereby completing the accurate matching of the pulling rate and the casting blank information and facilitating the subsequent casting blank width calculation on a QMS management application platform. The invention transmits the request-response mode data between the QMS management application platform server and the data acquisition system in a TCP/IP communication mode, transmits the relevant data information of the casting blank to the QMS management application platform server, and selects different calculation functions on the QMS management application platform server according to different steel types to complete the width calculation of the casting blank, thereby effectively reducing the deviation between the actual width and the theoretical width of the casting blank, improving the width control precision of the casting blank during hot rolling, ensuring the production efficiency and the quality of hot rolling products, and the calculation result can be displayed through a computer terminal. According to the continuous casting blank width forecasting method, the possibility of calculating the width of the casting blank by data is realized by establishing the casting blank width calculation model, the width of the casting blank is automatically, quickly and accurately estimated, and the width index of the casting blank is quantized more efficiently and accurately; the automatic casting blank width measuring device has high automation degree, reduces the workload of manually measuring the casting blank, improves the accuracy of measuring the width of the casting blank, can accelerate the turnover of the casting blank, and is beneficial to improving the control precision and the production efficiency of the hot rolling width.
The invention is further described with reference to specific examples.
Example 1
Taking a casting blank 1910890131 produced in a certain continuous casting workshop as an example, performing continuous casting primary system data acquisition, continuous casting secondary system data acquisition, data matching and archiving according to the first step, the second step and the third step in the forecasting method, then establishing communication between a QMS management application platform server and a data acquisition system according to the fourth step, after the cutting of the casting blank is completed, receiving casting blank related information by the continuous casting secondary system, transmitting the casting blank related information to a QMS management application platform, triggering the QMS management application platform to request the casting blank data from the data acquisition system, feeding the corresponding casting blank data back to the QMS management application platform after the data acquisition system receives the request, inputting the data into a casting blank width calculation function corresponding to the steel type on the QMS management application platform for calculation, and finally obtaining a casting blank width calculation result of 1867mm and an actual measurement result of 1866mm, the width calculation deviation is only 1mm, so that the deviation between the actual width and the theoretical width of the casting blank is effectively reduced.
Claims (8)
1. A method for automatically, quickly and accurately forecasting the width of a continuous casting blank is characterized by comprising the following steps:
step one, continuous casting primary system data acquisition
Collecting a casting machine drawing speed curve and a casting length curve through an encoder A and transmitting the curves to a continuous casting primary system;
step two, continuous casting secondary system data acquisition
Collecting a cutting signal of a casting blank through an encoder B, transmitting the cutting signal to a continuous casting secondary system through a continuous casting primary system, and analyzing and processing to obtain the initial position, the length and the end position of the casting blank;
step three, data matching and archiving
The data acquisition system respectively acquires a pulling speed curve and a casting length curve in the primary system and a casting blank starting position, a casting blank length and an ending position in the secondary system through a data acquisition machine, and then data matching is carried out to obtain pulling speed data in different casting blank length directions and upload the pulling speed data to a database in the data acquisition system;
step four, establishing communication
Both the QMS management application platform and the data acquisition system transmit data in a request-response mode in a TCP/IP communication mode, so that pulling rate curve data corresponding to the casting blank can be obtained from the data acquisition system;
step five, calculating the width of the casting blank
After receiving corresponding information provided by the data acquisition system, the QMS management application platform calls a casting blank width calculation function to calculate the width of the casting blank;
step six, feeding back to the hot rolling production system
And feeding back the width calculation result in the QMS management application platform to the hot rolling production system.
2. The method for automatically, rapidly and accurately forecasting the width of the continuous casting blank according to claim 1, wherein the method comprises the following steps: the casting blank width calculation function is F (Mw, Vm) ═ Mw + (Vm-Vk) × Kw, Mw is the width of a lower opening of the crystallizer, Vm is the real-time casting speed of the casting flow, Kw is the width constant, and Vk is the constant of the casting speed.
3. The method for automatically, rapidly and accurately forecasting the width of the continuous casting blank according to claim 2, wherein the method comprises the following steps: kw and Vk are obtained by measuring actual widths of casting blanks of different steel types, different widths and different pulling speeds and performing regression analysis on the actual widths of the casting blanks of the different steel types, the pulling speeds of the casting blanks and the width of a lower opening of a crystallizer.
4. A method for automatically, rapidly and accurately forecasting the width of a continuous casting blank according to claim 3, wherein: and the continuous casting primary system also transmits the furnace number, the steel grade and the width data of the lower opening of the crystallizer to the continuous casting secondary system together to trigger a casting blank output event of the continuous casting secondary system.
5. The method for automatically, rapidly and accurately forecasting the width of a continuous casting billet according to any one of claims 1 to 4, wherein: the data acquisition system comprises an data acquisition machine and a data acquisition server, wherein the input end of the data acquisition machine is respectively connected with the continuous casting primary system and the continuous casting secondary system, the output end of the data acquisition machine is connected with the data acquisition server, the data acquisition server is in communication connection with the QMS management application platform in a TCP/IP communication mode, and the QMS management application platform is electrically connected with the continuous casting secondary system.
6. The method for automatically, rapidly and accurately forecasting the width of the continuous casting billet according to claim 5, wherein the method comprises the following steps: after receiving the casting blank output event of the continuous casting secondary system, the QMS management application platform requests the corresponding pulling rate curve data from the data acquisition system according to the concrete information of the casting blank, and after receiving the request, the data acquisition platform transmits the pulling rate curve data corresponding to the casting blank to the QMS management application platform.
7. The method for automatically, rapidly and accurately forecasting the width of the continuous casting blank according to claim 6, wherein the method comprises the following steps: the encoder A is installed on the fan-shaped section of the continuous casting machine.
8. The method for automatically, rapidly and accurately forecasting the width of the continuous casting billet according to claim 7, wherein the method comprises the following steps: and the encoder B is arranged on the measuring roller of the flame cutting machine.
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| CN114264786A (en) * | 2021-11-29 | 2022-04-01 | 马鞍山钢铁股份有限公司 | Casting blank quality evaluation method and system based on continuous casting tundish submerged nozzle nodule and nodule |
| CN115055657A (en) * | 2022-06-22 | 2022-09-16 | 武汉钢铁有限公司 | Method for controlling width of high-grade non-oriented silicon steel casting blank |
| CN115070002A (en) * | 2022-06-09 | 2022-09-20 | 安阳钢铁股份有限公司 | Method for accurately controlling width of continuous casting billet |
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| CN115055657A (en) * | 2022-06-22 | 2022-09-16 | 武汉钢铁有限公司 | Method for controlling width of high-grade non-oriented silicon steel casting blank |
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