Design of blowing argon control systems for molten steel container

To control the argon flux for molten steel container accurately is both the difficult and valuable in steelworks. An optimal scheme of blowing argon control system on steel-making technology is developed, in which improved Pulse Code Modulation technology and fuzzy control method are applied. The design idea is to control the stirring energy of argon so as to get the proper argon flux. The hardware configuration and the soft flowchart of the control system are given. The scheme can overcome unfavorable influence on system from operator, external environment (pressure, temperature), the steel ladle brick blockage, pipeline leaks and others. The practices show that the argon flux for molten steel container can be controlled automatically and accurately. The control system has been successfully used in several steelworks and gained much of profits.