Simulation Research Of Rolling Process On Hot Strip Steel Finshing Group

As the rapid development of modern industrial technology and production working procedure automation, it makes higher demands on the quality specification, dimensional precision and performance. The production level of steel and its proportion in rolled metal is one of the chief signs to development of the rolling steel. The finishing mill is finished rolling mill, and it is the core part of the hot strip steel production. The quality of rolling product mainly depends on the technical equipment and the control level of the finishing mill. Therefore, the study on the accuracy of hot rolling mill has quite important meaning to improve the quality of rolling product.In order to improve the quality of 1 780mm hot rolling product, the thesis mainly research on the pre-setting accuracy of the rolling parameter, which is a basic technical measure. In this thesis, it has comprehensively been analyzing the working theory, control method, modeling methodologies to establish the mathematics model of the finishing mill and has made some improvements to the modeling and the model realization method of string roller organization control system. Through simplifying system's model reasonably, model suitable for mathematics model of practical engineering was given. This model not only accurately embodied dynamic characteristics of this system, but also advantaged gaining accurate parameter of the system and all kinds of components. Meanwhile the model included non-linear elements that were simplified frequently, effects of disturbances and changes of control system adjustment ways. In aspect of model realization, modern simulation technique and software of calculation are applied adequately and system simulation has been realized through using dynamic structures of Simulink of Matlab software. Based on kinds of effect factors, it established vertical vibration model by Admas software, which provides an advantages analysis method to study the technology of the hot rolling mill.The thesis contrasts the test result with simulation result and proved that the model can reflect real conditions. Trough changing the parameter, it gets the influence law to work process. Then it improved the accuracy and dynamic property in the rolling process. The research result in this thesis has been confirmed in the work field and the production is improved.