Redundancy control method for flame cutting system of continuous casting machine

Abstract

The invention belongs to the technical field of continuous casting of steel and iron, and relates to a redundancy control method for a flame cutting system of a continuous casting machine, which is characterized in that a time control program is added in an optimized logic control program by taking a flame cutting machine clamping signal as a reference, and cutting end electrical limit is replaced by taking the flame cutting machine clamping signal as the reference and matching with delay time. A holding clamp loosening signal of the flame cutting machine is used as a reference to be matched with different delay times to replace cutting machine swing gun initial electrical limiting and cutting machine original electrical limiting. Whether each simulation electrical limit is put into use or not can be put into or removed from an HMI picture, and the delay time can be adjusted on the HMI picture in real time according to different production working conditions. After any electrical limit of the flame cutting machine breaks down, the limit can be quickly simulated for use, the on-line first-aid repair operation time can be shortened by 30 minutes per time, the potential safety hazard of high-temperature on-line first-aid repair is thoroughly solved, and the stability of continuous production of a casting machine is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of iron and steel continuous casting, in particular to a redundant control method of a flame cutting system of a continuous casting machine. Background technique [0002] In the iron and steel production process, the continuous casting billet production of the steelmaking system occupies an important position, and the billet flame cutting system is one of the key equipment for the continuous casting billet production. The continuous casting billet production process is that molten steel passes through the mold to form the billet. After straightening by the tension leveler, the appropriate fixed length is set according to the production needs, and the continuous casting machine cutting system is used to cut the billet into the fixed length of the set length. Therefore, the failure of the flame cutting system of the continuous caster will directly lead to the stop of the current billet casting. That is to say...

AI Technical Summary

Problems solved by technology

Such a high temperature caused frequent failures of the cutting machine limit, resulting in the failure of the flame cutting machine to work normally, and even the stop of the single-strand casting operation

Moreover, the high temperature makes it difficult for maintenance personnel to repair it.

During maintenance, the sin