Control method for heating output of continuous annealing production line

Abstract

The invention discloses a control method for heating output of a continuous annealing production line. The control method is applied to a control system of the continuous annealing production line, and the technical problem that in the prior art, thin gauge strip steel in a continuous annealing machine furnace is prone to heating buckling is solved. The control method for the heating output of the continuous annealing production line comprises the steps that the strip steel width-to-thickness ratio of strip steel is determined before the strip steel enters a continuous annealing furnace area of the continuous annealing production line; whether the strip steel width-to-thickness ratio is within the range of a first width-to-thickness ratio is judged, and a first judged result is obtained; and if the first judged result is yes, then a first mix heating mode matched with the strip steel width-to-thickness ratio is determined from various mix heating modes, wherein each mix heating mode is a proportional mix of a proportional heating mode and a normal heating mode, and after the strip steel enters the continuous annealing furnace area, the heating output of each line of burners in the continuous annealing furnace area is adjusted according to a first power output curve of the first mix heating mode, and the product quality of the thin gauge strip steel is further improved.

Description

technical field [0001] The invention relates to the technical field of cold-rolled strip steel, in particular to a heating output control method of a continuous annealing production line. Background technique [0002] Continuous annealing furnace is an important part of cold-rolled strip production. Continuous annealing furnace has a series of advantages such as short process, high output and good product quality, and is an indispensable annealing equipment. [0003] In the prior art, there are mainly three heating modes used in the continuous annealing furnace, which are: normal mode: the heating output of each row of radiant tube burners in the continuous annealing furnace is the same; proportional mode: each row in the continuous annealing furnace The heating output of radiant tube burners shows an increasing trend; narrow strip mode: the heating output of each column of radiant tube burners in the continuous annealing furnace shows a decreasing trend. [0004] With the ...

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Problems solved by technology

[0005] The embodiment of the present invention solves the technical problem in the prior art that thin-gauge steel strips are prone to thermal buckling in the continuous annealing furnace by providing a method for controlling the heating output of the continuous annealing production line

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