Strip steel deviation simulation system of continuous hot galvanizing unit annealing furnace and control method

Abstract

The invention provides a strip steel deviation simulation system of a continuous hot galvanizing unit annealing furnace and a control method. The method comprises the following steps: obtaining process parameters of selected process sections; obtaining incoming material data information of the strip steel; setting the sampling serial number of the sampling point of each process section, and setting the annealing temperature and tension of the strip steel in each process section; calculating a deviation factor and a deviation amount of each sampling sequence number in each process section, judging whether the deviation factor exceeds a deviation critical value or not, and calculating a deviation correction amount for the deviation factor which exceeds the deviation critical value; and summarizing the deviation correction amount of each process section to pre-adjust the deviation correction roller oil cylinder. According to the method, deviation prediction of the whole roll of strip steel in all process sections can be achieved according to different plate shape sampling points of the whole roll of strip steel, meanwhile, the deviation correction amount of the deviation correction roller is calculated according to the deviated sampling points, the deviation correction roller is pre-adjusted, prediction and control over deviation of the strip steel in the annealing furnace are achieved, compared with the hysteresis problem of a deviation rectifying method of firstly monitoring and then adjusting in the current production, the occurrence of deviation is effectively avoided.

Description

technical field [0001] The invention relates to the field of cold rolling, in particular to a strip deviation simulation system and a control method for an annealing furnace of a continuous hot-dip galvanizing unit. Background technique [0002] The annealing furnace is the key equipment for the production of cold-rolled hot-dip galvanizing line. According to the typical process flow of the annealing furnace, the annealing furnace roughly includes a preheating section, a heating section, a soaking section, a slow cooling section, a fast cooling section, an aging section, and a final cooling section. The continuous hot-dip galvanizing unit integrates cleaning, annealing, coating, skin-passing, tension leveling, post-processing and other technologies, and realizes high-efficiency production of high-quality hot-dip galvanized sheets. At the same time, the deviation of the strip steel in the annealing furnace occurs from time to time. The deviation of the strip steel in the fur...

AI Technical Summary

Problems solved by technology

Considering the characteristics of the equipment (equipment parameter table) and process (tension table, annealing temperature curve) in the annealing furnace of the hot-dip galvanizing unit, combined with the sheet shape data information of the incoming steel coil of the hot-dip galvanizing unit, on the basis of the deviation prediction mechanism model Therefore, it is very necessary to develop a control method suitable for the strip deviation in the annealing furnace of the hot-dip galvanizing unit, to realize the off-line prediction of the deviation trend of the whole coil of strip in each process section, and then combine the existing correction roller equipment , to pre-adjust the sampling point with a serious deviation tendency in the steel coil to be produced in advance, so as to effectively avoid the problem of deviation correction failure caused by the large motion inertia of the sampling point

Images