A heating control method for radiant tube of continuous annealing furnace

Abstract

The invention discloses a heating control method of a radiant tube of a continuous annealing furnace. The method comprises the following steps: acquiring target temperature and yield percent of each type of strip steel from historical data; correspondingly calculating the target temperature and the yield percent of each type of strip steel to obtain temperature set value groups, corresponding to the target temperature of each type of strip steel, of a radiant tube; forming two-stage heating model curves corresponding to the target temperature of each type of strip steel according to the temperature set value groups of the radiant tube, wherein each temperature set value group of the radiant tube can be used for forming one two-stage heating model curve; transferring one two-stage heating model curve which is in match with both the current target temperature and the current yield percent of the strip steel from the two-stage heating model curves; controlling the radiant tube in each area, so as to perform thermal treatment for the strip steel in the continuous annealing furnace. With the adoption of the method, the problem that smooth transition between the curves in the prior art cannot be carried out can be effectively avoided, and thus the smooth transition in the production process of the strip steels of different specifications can be achieved.

Description

technical field

[0001] The invention relates to the field of steel strip annealing treatment, in particular to a heating control method for a radiation tube of a continuous annealing furnace. Background technique

[0002] The continuous annealing furnace has high heat treatment efficiency and is mainly used to produce strip steel with high tensile strength and strong plasticity. The temperature control of the heating section is directly related to the quality of the product and is the most critical furnace section in the annealing process. The tube temperature model is one of the most important. In other places, the second level of the furnace area uses three fixed model curves, namely: Normal normal mode, Proportion equilibrium mode, and Narrow narrow material mode. , to determine the tube temperature setting value. In the process of application, the inventors of the present invention found that the steel strip specification has a certain error in the edge positions of th...

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