Finite element calculation method for round billet continuous casting solidification heat transfer

Abstract

The invention discloses a finite element calculation method for round billet continuous casting solidification heat transfer, and relates to the technical field of steel continuous casting. The method comprises the steps that a round billet two-dimensional geometric model is established according to the round billet section size; grid division is conducted on the round billet two-dimensional geometric model, and a round billet two-dimensional finite element model is constructed; establishing a round billet two-dimensional finite element solidification heat transfer model aiming at the round billet continuous casting solidification heat transfer problem; and the temperature field change in the continuous casting process is calculated through the round billet two-dimensional finite element solidification heat transfer model. According to the method, the arc-shaped boundary of the round billet is fully considered, a general quadrilateral unit is adopted, when grids are dense enough, any curve of the boundary of a region can be simulated and calculated through segmented straight lines on the boundary, and meanwhile the situation that the boundary is zigzag due to the adoption of a rectangular unit is avoided; compared with a finite difference method, the finite element method is adopted for calculation, so that the calculation precision is improved; proper boundary conditions are selected according to different cooling conditions of the crystallizer and each secondary cooling area, and the heat transfer phenomenon in the actual continuous casting production process of the round billet is simulated more accurately.

Description

technical field [0001] The invention relates to the technical field of steel continuous casting, in particular to a finite element calculation method for round billet continuous casting solidification heat transfer. Background technique [0002] Round billet continuous casting is a continuous steel casting technology that mainly produces tube blanks for seamless steel pipes. It can also be used to produce hub steel, gear steel, bearing steel, etc. In the fields of railway, chemical industry, petroleum, etc., various specifications of different materials Round billets have a wide range of applications. Round billet continuous casting has the advantages of high billet precision, good quality, low energy consumption and high metal yield. Compared with the traditional process of using ingot casting, continuous casting billet, etc. to first roll into a tube billet and then roll a steel tube, directly using a continuous casting round billet to perforate and roll a steel tube can ...

AI Technical Summary

Problems solved by technology

However, at present, there are few processes and methods that can provide the basis for the optimization of round billet continuous casting parameters. The existing methods are relatively simple, and the calculation of round billet solidification heat transfer is relatively rough, which has a certain gap with the actual production situation.

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