A temperature control method and system in an annealing furnace

Abstract

The invention discloses a method and system for controlling the temperature in an annealing furnace and applied to the field of automatic control. The method for controlling the temperature in the annealing furnace comprises the steps that the position of a strip head of a transition strip roll in the annealing furnace is monitored, wherein the transition strip roll is connected between a previous steel strip roll and a next steel strip roll; when it is monitored that a strip steel temperature monitoring point of an ith process section of the annealing furnace is reached at the position of the strip head of the transition strip roll, the strip steel temperature monitoring point of the ith process section of the annealing furnace is adjusted to the temperature required by annealing the ith process section of the annealing furnace, wherein i is 1 to N in sequence, and N represents the number of process section of the annealing furnace. The problem that selected time points for temperature transition are inaccurate is solved, further the annealing temperature required by automatic steel strip rolls is reached, and the stable mechanical properties of products are ensured.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a temperature control method and system in an annealing furnace. Background technique [0002] In order to pursue higher benefits, the product varieties and specifications produced by the cold rolling continuous post-processing line are increasingly diversified. For the annealing furnace, the diversified product varieties and specifications mean frequent temperature transitions. How to achieve a stable temperature transition has become a key factor affecting the stable operation of the furnace and product quality. [0003] In the prior art, the temperature transition is performed based on the operator’s experience and operating habits. The operator’s operation is difficult, and the operator’s inexperience is not accurate enough to select the time point of the temperature transition. Inaccurate selection of the start time point of the temperature transition will cause As a result...

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Problems solved by technology

[0003] In the prior art, the temperature transition is performed based on the operator’s experience and operating habits. The operator’s operation is difficult, and the operator’s inexperience is not accurate enough to select the time point of the temperature transition. Inaccurate selection of the start time point of the temperature transition will cause As a result, the strip steel cannot reach the required annealing temperature, resulting in unqualified mechanical properties of the product, resulting in waste or downgraded products

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