An arc-shaped narrow copper plate crystallizer

Abstract

The invention relates to the field of metallurgical metal solidification and continuous casting molding, in particular to a circular arc narrow face copper plate crystallizer. The crystallizer comprises two narrow face copper plates (1) with one ends being provided with semicircular smooth arc faces and two flat-plate-shaped wide face copper plates (2). The semicircular smooth arc faces of the two narrow face copper plates (1) are opposite; the two wide face copper plates (2) are opposite; and the narrow face copper plates (1) and the wide face copper plates (2) are assembled to form a cuboid structure. The narrow face copper plates (1) and the wide face copper plates (2) are connected in a tangency and smoothing mode, and the distance between the two wide face copper plates (2) is the same with the diameters of semi-circular grooves of the narrow face copper plates (1). The circular arc narrow face copper plate crystallizer has the beneficial effects that connection angles between the narrow face and wide face copper plates (2) of the crystallizer are omitted, the thermal stress at the ends of four corners of the fracture surface of a continuous-casting solidified blank shell is uniformized, the conicity of the copper plates of the crystallizer is optimized, and an air gap between the solidified blank shell and the copper plates is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgical metal solidification and continuous casting, in particular to an arc-shaped narrow copper plate crystallizer. Background technique [0002] With the continuous improvement of continuous casting technology, the castable steel grades and castable sections, including some high-alloy, high-quality, high-crack-sensitive steel grades, continue to expand, which greatly promotes the development of metallurgical industry technology. [0003] In recent years, the thickness of the billet of the large slab continuous casting machine has reached 250-600 mm, and the thickness of the large rectangular billet has reached 500 mm. Due to the concentration of thermal stress at the joint corner of the narrow and wide mold, and the concentration of cooling thermal stress at the corner of the continuous casting slab, the adverse effects of the increase in the cross section of the slab are: the stress concentratio...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from this that, in addition to using a taper with a large top and a small bottom, the traditional mold for continuous casting uses a certain chamfer. The taper of the bevel, that is, the taper of the narrow face, has not completed or completely solved the concentration of cooling thermal stress at the chamfer, and cannot further reduce or eliminate the solidification shrinkage of the mold chamfer, which will inevitably lead to cooling on the chamfer Poor effect, and further lead to cracks in the slab in the mold

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