A control method for heating power output mode of continuous annealing furnace
A technology of continuous annealing furnace and heating power, which is applied in the field of cold rolling and steel rolling, can solve the problems of strip temperature fluctuation and power fluctuation, and achieve the effect of reducing heating mutation and improving capacity
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Embodiment 1
[0023] figure 1 It is a schematic flowchart of a control method for heating power output mode of a continuous annealing furnace in an embodiment of the present invention. Such as figure 1 As shown, the method includes:
[0024] Step 1: Obtain the total column number N of radiant tubes in the heating section of the continuous annealing furnace, and obtain the output power P of the i-th column radiant tubes i , where P i The range is 0≤P i ≤100, the value range of i is 1~N;
[0025] Specifically, the total number of rows of radiant tubes in the heating section of the continuous annealing furnace is N, and the output power of the i-th row of radiant tubes is P i , then the power range of each row of radiant tubes satisfies 0≤P i ≤100, where i ranges from 1 to N. The specification of the strip steel is used as the control quantity of the power output mode, that is, according to the strip steel width w and the strip steel thickness h as the control quantity of the power outp...
Embodiment 2
[0036] A control method of a continuous annealing furnace heating power output mode of the present invention is described in detail below, specifically as follows:
[0037] Taking the 2230 continuous annealing production line of a certain factory as an example, considering the actual parameters of the heating section of the continuous annealing furnace, the total number of radiant tubes is N=31, and according to the actual production data of the production line, the coefficient of influence degree of aspect ratio is determined to be a=2.6, and the aspect ratio benchmark Value b=950, when the PID output power is 90%, then according to the width-thickness ratio of the strip w / h When the width-to-thickness ratio of the strip steel w / h≥950, then
[0038] When w / h=1450, for example w=1450mm, h=1.0mm, such as figure 2 As shown, the heating curve form is similar to the Normal mode;
[0039] When w / h=950, for example w=950mm, h=1.0mm, such as image 3 As shown, the heating curve ...
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