Patent: new generation Level 2

The invention discloses a Level 2 of a new generation Steckel mill for medium and heavy plate, which comprises a metallographic model subsystem, which is used to analyze the influencing factors of rolling force by using a preset metallographic model and generate predicted rolling force information; The pass schedule subsystem is used to generate the pass schedule according to the predicted rolling force information, obtain and carry out machine learning according to the real-time rolling information, and optimize the pass schedule; The continuous upgrade subsystem is used to obtain and upgrade and optimize the metallographic model subsystem, pass procedure subsystem and equipment in the production line according to the update and adjustment information of the production line. The invention also discloses an application method of a new generation of Level 2 of Steckel mill for medium and heavy plate. The invention can accurately control the rolling accuracy of medium and heavy plates, so as to improve the quality of plate rolling.

A New Generation Of Level2 System Of Steckel Mill For Medium And Heavy Plate And Its Application Method

The invention relates to the technical field of Steckel mill, in particular to a Level 2 of a new generation of medium and heavy plate Steckel mill and an application method thereof.

Background Technology

The industrial manufacturing industry, such as the medium and heavy plate coil plant of Nanjing Iron and Steel Co., Ltd., is fully computer-controlled. The plant with an annual output of several billion to 10 billion yuan only needs a few operators to operate. The computer system has primary basic automation, Level2 production process control automation, and tertiary production planning, sales and other business automation. The Level 2 is generally regarded as the nervous system of the steel mill, which is usually called the production execution system. The model part of the Level 2, called the Level2 model, is the intelligence of the steel mill system. It is considered to be the brain of the production line, which is the part with the highest technical content on the production line.

There are some problems in the existing Level 2, which can not integrate the accurate models such as controlled rolling and controlled cooling to improve mechanical properties into the rolling pass schedule. Most of the existing two-level systems can not even effectively combine important plate shape control equipment such as roll bending device into the rolling pass schedule, so that in the passes that are difficult to control plate shape, such as finish rolling passes, especially hard and thin products, only small reduction can be used, so as to reduce the mechanical properties after rolling. In this case, in order to ensure performance, we have to waste millions of dollars every year by adding expensive alloys. The more common waste is due to the poor quality of the Level 2 model, which leads to plate shape problems (medium wave, side wave, sickle bend, hook head and tail, etc.), resulting in defective products and reducing the success rate. This waste can also reach millions to tens of millions of dollars a year.

Summary Of The Invention

In order to overcome the above problems or at least partially solve the above problems, the embodiment of the invention provides a new generation of medium and heavy plate Steckel mill Level 2 and its application method, which can accurately control the accuracy of medium and heavy plate rolling, so as to improve the quality of plate rolling.

The embodiment of the invention is realized as follows:

In the first aspect, the embodiment of the invention provides a new generation of Level 2 of Steckel mill of medium and heavy plate, including metallographic model subsystem, pass regulation subsystem and uninterrupted upgrading subsystem, wherein:

The metallographic model subsystem is used to analyze the influencing factors of rolling force by using the preset metallographic model and generate the predicted rolling force information;

The pass schedule subsystem is used to generate the pass schedule according to the predicted rolling force information, obtain and carry out machine learning according to the real-time rolling information, and optimize the pass schedule;

The continuous upgrade subsystem is used to obtain and upgrade and optimize the metallographic model subsystem, pass procedure subsystem and equipment in the production line according to the update and adjustment information of the production line.

The system is optimized and improved on the basis of the existing Level 2 of Steckel mill of medium and heavy plate, and the functions of metallographic factors, logical optimization of pass schedule and continuous upgrading are added. It can optimize and adjust the relevant parameters in the process of plate rolling, so as to improve the effect of rolling and ensure the quality of rolled products; Through continuous upgrading and optimization, the problem of short service life and high cost of the second generation system in the prior art can be solved. Through the metallographic model subsystem, considering the influence of metallographic factors on plate rolling on the basis of the original model and combined with relevant metallographic parameters, a more accurate metallographic model is established to analyze the relevant influencing factors of rolling force and obtain an accurate prediction of rolling force; The above rolling force influencing factors include deformation factors, force and energy factors, metallographic performance factors, etc; The above predicted rolling force information includes plate geometry, thickness, width, length, etc. Based on the accurate prediction of rolling force, the logic of rolling pass schedule is optimized and adjusted. Considering the influence of reduction rate and rolling speed on rolling force, a reasonable and accurate pass schedule is generated. The pass schedule includes rolling times, rolling frequency, reduction rate and so on. The generated pass procedures that can be called out are optimized to ensure high product quality without damaging the equipment and improve the service life of the equipment. By continuously adjusting the service life of the second-generation rolling mill and updating the relevant information of the second-generation rolling mill, we can greatly save the service life of the whole production line according to the requirements of the second-generation rolling mill.

Based on the first aspect, in some embodiments of the invention, the above metallographic model subsystem includes a model optimization module and a prediction generation module, wherein:

The model optimization module is used to obtain and optimize the preset model according to the plate metallographic parameters and establish the metallographic model;

The prediction generation module is used to analyze the influencing factors of rolling force by using metallographic model and generate predicted rolling force information.

Based on the first aspect, in some embodiments of the present invention, the above track procedure subsystem includes a procedure design module and a procedure optimization module, wherein:

The procedure design module is used to design the initial pass procedure;

The schedule optimization module is used to optimize the initial pass schedule and generate the pass schedule according to the predicted rolling force information.

Based on the first aspect, in some embodiments of the invention, the above uninterrupted upgrade subsystem includes a model upgrade module and a device update module, wherein:

The model upgrading module is used to obtain and optimize the metallographic model of the metallographic model subsystem and the pass procedure logic of the pass procedure subsystem according to the update and adjustment information of the production line;

The equipment update module is used to obtain and optimize the equipment in the production line according to the update and adjustment information of the production line, and generate equipment update recommendation information.

Based on the first aspect, in some embodiments of the invention, the Level 2 of the new generation medium and heavy plate Steckel mill also includes a temperature prediction subsystem for generating temperature prediction according to the predicted rolling force information and pass schedule.

Based on the first aspect, in some embodiments of the invention, the Level 2 of the new generation medium and heavy plate Steckel mill also includes an operation configuration subsystem, which is used to configure the communication parameters of windows and metallographic model subsystem, pass regulation subsystem and uninterrupted upgrade subsystem, so that the metallographic model subsystem The pass procedure subsystem and uninterrupted upgrade subsystem run on windows.

Based on the first aspect, in some embodiments of the invention, the Level 2 of the new generation medium and heavy plate Steckel mill also includes a database subsystem for storing the SQL program of the database design of the metallographic model subsystem, the pass procedure subsystem and the continuous upgrade subsystem based on windows.

In the second aspect, the embodiment of the invention provides an application method of the Level 2 of a new generation medium and heavy plate Steckel mill, comprising the following steps:

The preset metallographic model is used to analyze the influencing factors of rolling force and generate the predicted rolling force information;

Generate the pass schedule according to the predicted rolling force information, obtain and carry out machine learning according to the real-time rolling information, and optimize the pass schedule;

Obtain and upgrade and optimize the metallographic model subsystem, pass procedure subsystem and equipment in the production line according to the update and adjustment information of the production line.

This method is realized based on the above two-level system of Steckel mill of medium and heavy plate, and increases the metallographic factors, logical optimization of pass schedule and continuous upgrading functions. It can optimize and adjust the relevant parameters in the process of plate rolling, so as to improve the rolling effect and ensure the quality of rolled products; The problem of high cost in the prior art can be solved through continuous upgrading and optimization. The influence of reduction rate and rolling speed on rolling force is fully considered, and the pass logic optimization is added. All the pass procedures that can be called out are optimized, and the product quality is high without damaging the equipment. The metallographic factors related to controlled rolling are fully considered in the model, which can be used as the criterion for arranging the controlled rolling schedule, so this system is more suitable for controlled rolling. The residual stress of the products of the coil mill can be reduced to improve the plate shape. It is especially suitable for rolling hard and thin products, and can solve the shape defects of hard and thin products. It can accurately control the relevant parameters in the plate rolling process, so as to improve the quality of rolled products.

Third, the embodiment of the present application provides an electronic device, which includes a memory for storing one or more programs; Processor. When one or more programs are executed by the processor, the system according to any one of the above first aspects is implemented.

Fourth, the embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the system according to any one of the above first aspects is implemented.

The embodiment of the invention has at least the following advantages or beneficial effects:

he embodiment of the invention provides a new generation of Level 2 of Steckel mill for medium and heavy plate and its application method, which comprehensively considers the influence of reduction rate and rolling speed on rolling force, plus the pass logic optimization, all the pass procedures that can be called out are optimized, the product quality is high and the equipment is not damaged. The metallographic factors related to controlled rolling are fully considered in the model, which can be used as the criterion for arranging the controlled rolling schedule, so this system is more suitable for controlled rolling. The residual stress of the products of the coil mill can be reduced to improve the plate shape. It is especially suitable for rolling hard and thin products, and can solve the shape defects of hard and thin products. It can accurately control the relevant parameters in the plate rolling process, so as to improve the quality of rolled products.