A method for automatic deviation correction control of cold-rolled strip continuous annealing heating furnace

Abstract

The invention discloses an automatic deviation correction control method for a continuous annealing heating furnace of cold-rolled strip steel, which comprises the following steps: Step 1 is to monitor in real time the tension data of each area of ​​the PLC system of the continuous annealing heating furnace, the specification data of strip steel products, and the continuous annealing heating furnace The correcting position of the oil cylinder in each area, the CPC position of the strip correcting in each area in the continuous heating furnace; step 2 is to use the neural network N to calculate the tension setting procedure; step 3 is to compare the initial deviation state with the tension deviation after 10s state, calculate the strip correction effect, store the execution results in the neural network database, and retrain the neural network N; step 4 is to reset the current tension setting parameters to the initial tension setting parameters of step 2, and re-execute step 2; step Step five is to re-execute step two on the basis of the current state unchanged; step six is ​​to exit the automatic deviation correction function. The invention can adjust the tension according to the feedback value of the deviation of the strip in the heating furnace, and correct the deviation of the strip.

Description

technical field [0001] The invention relates to the technical field of strip steel production, in particular to an automatic deviation correction control method for a continuous strip heating furnace for cold-rolled strip steel. Background technique [0002] The continuous annealing unit itself can produce high value-added products ranging from general commercial grade to stamping grade home appliance panels, automotive panels, high-surface and high-demand automotive outer panels, etc. In the entire production line, the continuous annealing furnace is an important part of the production process The main areas of the continuous annealing heating furnace can be divided into: preheating section (JPF), heating section (RTF), soaking section (SF), slow cooling section (SCS), fast cooling section (FC), overheating section Aging section 1 (OS1), overaging section 2 (OS2), and final cooling section (FCS), there are 8 tension zones in total. At present, in the production process of ...

AI Technical Summary

Problems solved by technology

At present, in the production process of the continuous annealing unit, there is a relatively serious deviation problem of the strip steel in the continuous annealing heating furnace. The deviation is that the center line of the width direction of the strip deviates from the center line of the roller table of the production equipment during the production process. According to the engineering description, the deviation phenomenon in the strip steel production process will not only deteriorate the shape of the product and reduce the qualified rate of the product, but may also lead to accidents such as strip breakage and impact on equipment, resulting in equipment damage, production line shutdown and other problems, resulting in huge economic loss

Images