A Method for Determining the Efficiency Factor of Speed ​​Rolling of Single Stand Reversible Cold Rolling Mill

Abstract

The invention provides a method for determining the single-stand reversing cold rolling mill lifting speed rolling efficiency coefficient. The method comprises the following steps that S1, cold rolling force mathematical models of all passes are established, and before rolling in each pass is started, the rolling efficiency coefficient of the pass is calculated to be used for lifting speed thickness control; S2, in the rolling process of each pass, data acquisition software is adopted for recording production process data of the pass; S3, after rolling of each pass is finished, the productionprocess data belonging to the pass and recorded by the data acquisition software are obtained, self-learning of the cold rolling force mathematical model of the pass is carried out, model parameters are updated and stored in a database, and meanwhile, the lifting speed rolling efficiency correction factors of the pass are calculated and stored in the database. By means of the method, the accuraterolling efficiency coefficient can be obtained without using an online steel coil test. After the scheme is adopted, the lifting speed control level is basically consistent with the high-speed sectioncontrol level, the finished product rate is improved, and the probability of occurrence of the broken belt accident is reduced.

Description

Technical field [0001] The invention relates to the technical field of automatic control of rolling mill processes, in particular to a method for determining the efficiency coefficient of speed-up and down-speed rolling of a single-stand reversible cold rolling mill. Background technique [0002] The single-stand reversible cold rolling mill performs multiple round-trip rolling of strip steel to achieve the target thickness required by the order. In the rolling process of each pass, the strip will go through the rolling process such as speed-up section, high-speed operation section, and speed-down section. Among them, during the rolling process of the speed-up section after the start of the pass and the speed-down section before the end of the pass, if the strip thickness is too long, it will directly affect the mechanical composition. [0003] The main thickness control methods of a single-stand reversible cold rolling mill include feedforward control, second flow control, and fe...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for determining the efficiency coefficient of speed-up and down-speed rolling of a single-stand reversing cold rolling mill, aiming at solving the problem of speed-up and down-speed thickness control accuracy

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