The application of PLC in the steel industry is mainly reflected in the following aspects:
Automation control: PLC realizes automation control in the steel production line. By setting the control language and working accordingly to the design, it avoids human involvement in the error and improves the reliability of steel production.
Sequential control: PLC can be used for sequential control, replacing traditional relay circuits for logic and sequential control. This is very useful in single equipment control, multi-machine group control and automated assembly lines.
Process control: In the industrial production process, PLC can handle continuously changing quantities such as temperature, pressure, flow, liquid level and speed to complete closed-loop control.PID regulation is a common control method, widely used in metallurgy, chemical industry, heat treatment, boiler control and other occasions.
Motion control: PLC can be used for the control of circular or linear motion, using special motion control modules, such as stepper motors or servo motors single-axis or multi-axis position control module, widely used in machinery, machine tools, robots, elevators and other occasions.
Data processing: PLC has mathematical operations, data transfer, data conversion, sorting, table lookup, bit operation and other functions, can complete the data acquisition, analysis and processing. This is very useful in large control systems in the metallurgical and food industries.
The iron and steel industry has a very high demand and reliance on PLCs because they can automate and intelligently manage production lines to improve production efficiency and product quality. For example, the converter steel mill of Bensteel Group adopts PLC system of Siemens for control, which significantly improves the efficiency and management level of steelmaking.
Future development trend: with the progress of science and technology, steel enterprises are gradually developing in the direction of unmanned operation, intelligence, and electronization. PLC control technology will play a more important role in steel production, realizing the network integration operation of the production line, ensuring the transferability and sharing of information, and improving the production efficiency and safety.
