Heating furnace comprehensive optimizing controlling system designing and controlling method for hot rolling process

Abstract

A design and control method for the optimizing control system of intermediate rolling mill and heating furnace in order to improve the heating quality of billet in the heating furnace and save energy features that the heating furnace and intermediate rolling mill constitute a closed loop system, the information (rolling force, temp, etc) is fed back to heating furnace for dynamically changing the heating temp, and the optimizing control strategy and control algorithm are used in the billet heating process.

Description

technical field [0001] The invention belongs to the field of metallurgical automation process control, and relates to the design and control method of a new integrated optimization control system for a heating furnace in a steel billet hot rolling process. Background technique [0002] The heating furnace and rolling mill are important production equipment in the billet hot rolling production process, and are also the main energy-consuming equipment in the hot rolling process. The heating furnace provides the rolling mill with a steel billet with a temperature distribution that meets the requirements of the rolling process, and the rolling mill rolls the billet into high-quality rolled products according to customer requirements and rolling process requirements. The rolling energy consumption of the rolling mill depends on the heating quality of the slab. If the heating quality of the slab cannot meet the requirements of the rolling process, the worst case may lead to a roll...

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Problems solved by technology

[0009] From the above analysis, it can be seen that the existing optimization control strategy for the heating furnace separates the heating process and the rolling process of the billet artificially, and does not take into account the close connection and control between the heating furnace and the rolling unit in the production process. Therefore, no matter what kind of optimization control is performed on the heating furnace, it can only be partially optimized, and the overall optimization of the heating furnace and the roughing rolling unit cannot be realized, so the minimum total energy consumption and the control effect of the hot rolling process cannot be guaranteed. optimal

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