Wide-surface copper plate of crystallizer for high-efficiency slab caster

Abstract

A wide-surface copper plate of a crystallizer for a high-efficiency slab caster relates to a continuous casting crystallizer. The wide-surface copper plate comprises a wide-surface copper plate main body, a plurality columns of screw holes arranged on the wide-surface copper plate main body, and cooling water tanks arranged on a cold surface of the wide-surface copper plate main body. The wide-surface copper plate is characterized in that the cooling water tanks includes deep water tanks and shallow water tanks which are different in depth, between the adjacent two columns of screw holes, two deep water tanks are symmetrically arranged close to the screw holes, and two shallow water tanks are symmetrically arranged close to the central line of the two columns of screw holes. According to the invention, on the basis of thermophysical parameters of the copper plate of the crystallizer and heat transfer between a high-temperature solidified blank shell and the copper plate of the crystallizer, by changing the depth and the distribution of the cooling water tanks, the copper plate of the crystallizer is high in cooling intensity and cooling uniformity. Therefore, basing on ensuring rapid heat exchange between the copper plate and a high-temperature casting blank, heat exchange uniformity is realized, and thermal load uniformity of the copper plate is ensured, so that the purposes of improving the casting blank quality, prolonging the service life of the copper plate and lowering the production cost can be achieved.

Description

technical field [0001] The invention relates to a continuous casting crystallizer, in particular to a wide-faced copper plate of the crystallizer used in a high-efficiency slab continuous casting machine. Background technique [0002] As the heart of continuous casting, the continuous casting process in the mold is a complex process associated with phenomena such as heat transfer, solidification, flow and solute redistribution. The phenomena are interrelated and interact with each other, which makes the heat transfer behavior in the crystallizer extremely complicated. Among them, the heat transfer process of the molten steel in the mold has a very important influence on the quality of the slab. In order to adapt to the shrinkage of the high-temperature slab shell in the mold, improve the cooling conditions, increase the casting speed, and improve the quality of the slab, a reasonable water tank structure in the copper plate of the mold plays a vital role. Uneven heat trans...

AI Technical Summary

Problems solved by technology

Uneven heat transfer can easily lead to cracks in the slab, and it can also easily lead to the occurrence of unfavorable phenomena such as internal stress, surface cracks and recrystallization of the copper plate itself.

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