Medium plate double-frame rolling load distribution method

Abstract

The invention discloses a medium plate double-frame rolling load distribution method, and belongs to the technical field of rolling of medium plates. The rolling cycle is improved by using the same rolling time of two rolling mills a target; and optimal frequency distribution of rough rolling and precision rolling of steel plates with different sizes is determined by analyzing the influencing factors such as the rolling time of different frequencies of the steel plates, the frequency and the turning steel. The determination principle of the temperature-waiting thickness of a steel plate is further determined, namely the temperature-waiting thickness of the steel plate with the size of more than 50 millimeters is 1.92 times the thickness of the steel plate, the temperature-waiting thickness of the steel plate with the size of less than 50 millimeters is 2.11 times the thickness of the steel plate, and the fluctuation range is within + / -20m. The method is applied to production of the steel plates with multiple sizes; and by linking the rolling schedule with the temperature-waiting thickness distribution of the steel plates, direct application of rolling production is facilitated.

Description

technical field [0001] The invention relates to the technical field of plate rolling, and in particular provides a load distribution method for double-stand rolling of medium-heavy plates, which is suitable for improving the rhythm of rolling steel plates of various thickness specifications in a double-stand production line. Background technique [0002] There are generally two types of layout for the plate mill: one is a single-stand form, and the other is a double-stand form. Due to the advantages of double stands in terms of productivity and flexibility, it has become the main development direction of the medium and heavy plate rolling line. For two-unit units, how each rolling mill can give full play to its rolling capacity, how to reasonably distribute the total rolling load between the two rolling mills, and how to maintain a dynamic balance between the rolling rhythm and time of the two rolling mills are directly related to smooth logistics and maximum utilization. T...

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Problems solved by technology

At present, there are many studies on the theoretical model of the double-stand rolling rhythm, such as the literature "Adjustment strategy for the rolling rhythm balance of the double-stand plate Periodic Estimation of Parameter Perturbation of Rack Serial Production Line" (Journal of Beijing Institute of Technology, No. 6, 2011, P675), etc., there is no direct guidance and easy-to-apply technology for the production site

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