With the transformation of China's industrial technology and economy, the elimination and reorganization of iron and steel enterprises, the smelting technology of iron and steel enterprises is becoming more and more accurate, the high-end equipment of iron and steel enterprises is increasing, and the level of electrical automation is getting higher and higher. Although the level of electrical automation in metallurgical industry has been improved, it still cannot meet the requirements of industrial technology development and production efficiency of iron and steel enterprises. Only by improving and optimizing metallurgical electrical automation technology can we increase the production output of iron and steel enterprises, improve economic benefits and accelerate the rapid development of metallurgical industry.
1, the characteristics of metallurgical electrical automation technology
The automation level of China's iron and steel enterprises is not high enough and the popularization is not enough. Most iron and steel enterprises have the characteristics of too extensive production technology, too complex production technology and too strong dependence on electrical automation.
1. 1 Metallurgical production technology involves too much.
There are many smelting links in iron and steel enterprises, involving a wide range of contents. There are many physical and chemical changes in the production process, and there are many mutation factors in the production process. The technology involved in the smelting process is very complicated. It is necessary to control the raw materials and monitor the physical change parameters and environmental chemical parameters in the production process. The electrical automation control system should be able to control or track the whole production process, which involves a wide range of contents. Only such a control system can ensure the safety of the production process, improve the output of smelting products and improve the economic benefits of iron and steel enterprises.
1.2 metallurgical production process is too complicated.
The metallurgical production process is complex and the actual production process is relatively complete. Metallurgical electrical automation control system should cover the whole production process, realize software and hardware coordination and optimize the production process. At present, metallurgical electrical automation system is technically difficult, although technicians have very professional knowledge and master professional skills, which can really improve production efficiency.
1.3 metallurgical automation is highly dependent on electrical technology.
With the expansion of the production capacity of China's iron and steel joint enterprises, most small iron and steel enterprises are reorganized to form joint enterprises with more competitive advantages. These enterprises have introduced a large number of fully automated production lines, and the level of electrical automation has been continuously improved, covering almost the whole metallurgical process. Metallurgical automation is highly dependent on electrical technology, completing signal acquisition, signal conversion and result calculation, and realizing full automation of iron and steel enterprises.
2. Application status of metallurgical electrical automation technology.
Metallurgical electrical automation system uses intelligent control technology, computer network technology, neural network technology and monitoring technology to control and manage all links in the production process of metallurgical enterprises. As far as iron and steel enterprises are concerned, the technical links such as steel rolling, blast furnace, converter and casting are controlled by metallurgical electrical automation control system, which solves the problem of high temperature and heat in metallurgical process and solves many practical difficulties for iron and steel enterprises. Many large iron and steel enterprises have designed or reformed many electrical automation control systems, which can realize artificial intelligence operation. Automatic control system is the main part of cell control system, which is widely used in all aspects of cell manufacturing control. Among them, the most important application is intelligent control technology% expert system. In intelligent technology, fuzzy control, neural network and other technologies have been applied to steel rolling system, blast furnace, converter, continuous casting workshop, steel rolling regulation system and so on. In the steel industry, there are also online monitoring, cold-rolled and hot-rolled sheets, etc. Each subsystem is controlled by the central computer system to realize the conversion between sub-modules. Metallurgical electrical automation control system adopts field bus technology, data exchange and transmission technology, computer comprehensive technology and so on. To promote the standardization and programming of metallurgical process; Through artificial intelligence technology, the productivity of metallurgical enterprises is improved by using special automation equipment for robotic arms, which makes iron and steel enterprises make great progress and improve their market competitiveness.
3. The application prospect of metallurgical electrical automation technology.
Many domestic large-scale iron and steel joint ventures integrate the level of industry informatization by introducing electrical automation technology, improve production control accuracy and product quality through automatic control systems, further reduce production costs and reduce resource consumption. These electrical automation control systems improve the stability, reliability and safety of metallurgical production process. From these electrical automation control systems, the application prospect of metallurgical electrical automation technology in China can be summarized, including low-cost automation, industry informatization, intelligent control, smelting process control and comprehensive integrated control.
3. 1 low-cost automation
The so-called low-cost automation is to reduce the investment cost and risk by using high-tech and scientific investment through automation technology. Many small and medium-sized iron and steel enterprises use microcomputers as servers to accurately control the whole process and cycle, which realizes low-cost automation for enterprises and solves the constraints of small and medium-sized enterprises.
3.2 Industry Informatization
The so-called informatization of iron and steel industry is to realize the sharing of information resources and the standardization and systematization of enterprise informatization management through computer systems. Most iron and steel enterprises collect raw data in the production process through electrical automation control system, analyze and study these raw data with the help of information technology, and mine potential data with scientific management decision analysis software to provide scientific and reasonable data support for the development of enterprises.
3.3 Intelligent control
Although self-adaptation, optimization, model prediction and other control strategies have been widely used in electrical automation control systems, they still cannot meet the technical requirements, because the traditional PID control theory adapts to the complex and changeable characteristics of mathematical models, and intelligent control has good adaptability to the overall control scheme, especially for the comprehensive control system with high complexity, which can control different levels of intelligent equipment and has great development space.
3.4 Smelting process control
The electrical automation control system can monitor the whole process of product quality supervision, environmental protection monitoring and logistics tracking. The electrical automation control system adopts new sensors, data fusion processing and other high technologies to control the whole process of raw material quality, molten steel purity, slag composition, temperature and solid waste monitoring, and improve the benefits of iron and steel enterprises.
3.5 Comprehensive Integrated Control
Electrical automation integrated control system is the future development direction. This system breaks the professional boundaries and division of labor of traditional computers, instruments and electricity in control equipment, realizes the problem of controlling analog quantity with logical control, and greatly improves the practicability and operability of the system. The integrated control system of electrical automation simplifies the process and reduces the cost, which is an important direction of the development of electrical automation in iron and steel industry.
4. Conclusion
Metallurgical electrical automation system is a control system realized by computer network technology, artificial intelligence technology and automation technology. Optimizing and improving metallurgical electrical automation control technology can improve the production efficiency of metallurgical industry, ensure the more standardized production process and ensure the better development of metallurgical industry in China. Electrical automation control is the mainstream trend of metallurgical industry development, which plays a guiding role in the development of metallurgical enterprises. Iron and steel enterprises should actively introduce or transform automatic control systems to improve market competitiveness, increase smelting output, improve economic benefits and promote sustainable development.