Full-automatic control method for steel sintering temperature of heating furnace

Abstract

The invention discloses a full-automatic control method for steel sintering temperature of a heating furnace. The parameters of plate blank temperatures are calculated by arranging heating models according to different steel types and specifications. Heating model parameters in a database table are given to the specific plate blanks and sent to a secondary heating model control system through a tracking system, and then the temperature lower limit of the plate blanks entering each section of the heating furnace and the temperature upper limit of the plate blanks discharged from each section of the heating furnace can be adjusted; the temperature set value of each section of a hearth is adjusted through a limiting requirement model; if the plate blanks of different steel types and specifications exist in the heating furnace, the temperature upper limit and the temperature lower limit of each plate blank are worked out, the temperature of the hearth is adjusted according to each plate blank, and the adjustment principle is that on the premise of considering all the plate blanks in each section, the plate blanks discharged out of the furnace are guaranteed preferentially, the temperature of the plate blanks can be automatically controlled when the plate blanks of different steel types and specifications exist in the same furnace, each plate blank can reach the target tapping temperature when arriving at the discharge position, and meanwhile the requirement for the start rolling temperature of rolling of a rolling mill is met.

Description

Technical field [0001] The invention belongs to the technical field of automatic control of a heating furnace, and specifically relates to a method for fully automatic control of the steel burning temperature of a heating furnace. Background technique [0002] The heating furnace of the hot-rolled steel plant in the iron and steel industry is a key process of production. The quality of the heating furnace's heating slab directly affects the stability of the rolled steel and the performance of the product. At the same time, the heating furnace is also the main equipment for energy consumption. The existing steel burning temperature control in the heating furnace is divided into three levels of automatic control and manual control. The three levels of automatic control are the second level heating model control system, the first level combustion control system, and the level 0 electrical component execution system. Such as figure 2 As shown, during normal production, the two-level ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems existing in the prior art, and to provide a fully automatic control method for heating furnace steel burning temperature that has little impact on product quality and stable production, and can satisfy the control of mixed firing of different stainless steels in the heating furnace

Images