Chamfered crystallizer with taper continuous casting plate blank

Abstract

The invention discloses a chamfered crystallizer with a taper continuous casting plate blank, and belongs to the technical field of steel-making-casting. The chamfered crystallizer comprises relatively wide copper plates and relatively narrow copper plates and is characterized in that the chamfered crystallizer is composed of two relative wide copper plates and two relative narrow copper plates; a chamfer surface transitioned from an inner surface of the narrow copper plate to the inner surface of the wide copper plate is a circular arc curved surface or plane, the chamber surface has a natural inverted taper from an upper opening to a lower opening of the crystallizer; an included angle of two ends of the narrow copper plate and the wide copper plate is 90 degrees, the platform width of the chamfer surfaces at two ends is 0-6 mm; and the chamfer surface has a taper. A multi-variety and multi-specification mature industrial application is realized, the transverse corner crack of the continuous casting plate blank is eliminated, and the longitudinal corner crack defect is avoided. The thickness specification range of the proper continuous casting plate blank is 130-420 mm, and the width specification ranges from 1000 to 3000 mm. The matched casting process is reliable and stable. The structure is relative simple and the popularization is strong.

Description

technical field [0001] The invention belongs to the technical field of steelmaking-continuous casting, and in particular provides a continuous casting slab chamfering crystallizer with a self-contained taper. Background technique [0002] The problem of corner and transverse crack defects in conventional continuous casting slabs has long been a difficult problem for metallurgical workers. At present, most of the crystallizers used in the conventional continuous casting process of slabs are composed of two wide-faced copper plates facing each other and two The opposite narrow-faced copper plates are assembled together. The angle between the wide-faced copper plate and the narrow-faced copper plate is a right angle. When the molten steel solidifies in this mold, the corner part is two-dimensional heat transfer, so the part solidifies quickly and shrinks early. , often form an air gap with the copper plate of the crystallizer, resulting in a relatively thin solidified shell at ...

AI Technical Summary

Problems solved by technology

[0010] Chinese patent 201020205143.3 discloses a slab crystallizer with a round hole cooling water channel at the chamfering part. The round hole water channel cooling method is not only complicated in structure, but also difficult to Maintenance and cleaning, the practicability is poor, and the taper of the chamfered surface itself is not considered, and the chamfered continuous casting slab is prone to corner longitudinal crack defects

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