Narrow-face copper plate for chamfer crystallizer

Abstract

The invention discloses a narrow-face copper plate for a chamfer crystallizer. A working face of the narrow-face copper plate for the chamfer crystallizer comprises a first part and a second part; the first part is a sunken curved surface; the first part is a part on the working face in a range of 200mm to 400mm apart from an upper port of the crystallizer. The first part comprises a first curved surface region, two second curved surface regions and two transition curved surface regions, wherein the first curved surface region is a second degree parabola region; the two second curved surface regions are curved surfaces of which the crown heights are 1mm to 3mm; the two transition curved surface regions are curved surfaces with radii of 5mm to 35mm; the two transition curved surface regions are respectively connected with two opposite sides of the first curved surface region and the two second curved surface regions. The second part is connected with the first curved surface region, the two second curved surface regions and the two transition curved surface regions; the second part is a linear conical surface. The narrow-face copper plate for the chamfer crystallizer is also provided with a cooling waterway for cooling the working face; the distance between the cooling waterway and the edge, which is far away from the transition curved surface regions, on each second curved surface region is 20mm to 40mm; the distance between the cooling waterway and each transition curved surface region is 10mm to 30mm.

Description

technical field [0001] The invention relates to parts on a crystallizer in the field of continuous steel casting equipment in the metallurgical industry, in particular to a chamfering mold narrow-faced copper plate. Background technique [0002] With the development of continuous casting technology, the slab continuous casting production line continues to develop high-quality steel grades, and the casting elements containing niobium, boron, vanadium and other elements are gradually increasing. Due to the 2-dimensional heat transfer at the corner of the slab, this part solidifies quickly and shrinks greatly, and it is easy to generate air gaps at the corner of the slab, resulting in poor solidification structure at the corner. Such elements widen the third brittle zone of the steel grade. In the bending section and straightening section of the secondary cooling, the corner temperature of the billet can easily enter the brittle zone range of this kind of steel grade. When nio...

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Problems solved by technology

[0006] The application provides a chamfered mold narrow-faced copper plate, which solves the problem of limited temperature increase at the corner of the billet due to the small amount of arc chamfering of the transitional surface in the prior art, which fails to fully solve the problem of heat transfer, resulting in casting There are more longitudinal cracks in the billet, and even steel leakage accidents, which lead to the technical problem that the actual application effect of the chamfered crystallizer is poor

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