Coordinate conjugate gradient computing method for roller rows of continuous bending and straightening segments of continuous casting machine for slabs

Abstract

The invention provides a coordinate conjugate gradient computing method for roller rows of continuous bending and straightening segments of a continuous casting machine for slabs, which includes a bending segment roller row coordinate computing method and a straightening segment roller row coordinate computing method. The two methods both include steps of determining and computing different parameters of a continuous bending segment roller row or a continuous straightening segment roller row of the continuous casting machine for slabs, building minimum value optimization functions according to relations of coordinates and arc length between starting points and tangency point rows on the bending segment or the straightening segment, solving according to the conjugate gradient method to obtain coordinates of different tangency points, and finally obtaining coordinates of different roller rows according to the coordinates of the tangency points. Compared with the other optimization method based on random search, the coordinate conjugate gradient computing method is faster in computation and higher in approximating precision, and further provides scientific and accurate evidence to engineering design and installation.

Description

technical field [0001] The invention relates to a design method for a roll row of a slab continuous casting machine in the iron and steel metallurgy industry. technical background [0002] The outer arc curve of the continuous bending section and straightening section of the slab continuous casting machine has a cubic function form, and the designer cannot obtain the analytical form expression of the tangent point coordinates in one step in the process of calculating the tangent point according to the arc length, and must rely on iterative optimization The approximate coordinates of the tangent point can be obtained through multi-step approximation, and different iterative optimization methods will obtain calculation results with different precision. Since domestic iron and steel enterprises and metallurgical design institutes usually design and apply continuous casting machines in cooperation with VAI, SMS and other international enterprises, they seldom master the specific...

AI Technical Summary

Problems solved by technology

Since domestic iron and steel enterprises and metallurgical design units mostly adopt the method of cooperating with VAI, SMS and other international enterprises to design and apply continuous casting machines, they seldom master the specific method of how to calculate the coordinates of each section of rolls. In order to improve the direct In view of the independent technical level of the arc continuous casting machine, it is necessary to propose a set of efficient and accurate calculation method for the roll column coordinates of the bending section and the straightening section of the continuous casting machine

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