Dummy bar head special for chamfered mold for continuous casting slabs

Abstract

The invention relates to a dummy bar head special for a chamfered mold for continuous casting slabs and belongs to the technical field of steelmaking-continuous casting. The dummy bar head comprises a head segment (1), a shim (2), and chamfered plates (3). Chamfer of the chamfered plates (3) corresponds to that of the mould. Mature industrial application of multi-type and multi-specification products is achieved. Corner cross cracks of continuous casting slabs are eliminated, and corner longitudinal cracks are also eliminated. The dummy bar head special for the chamfered mold is designed to adapt to the use of the chamfered mold. The dummy bar head is simple and highly applicable, the thickness of the adaptable continuous casting slabs ranges from 130mm to 420mm, and the width of the adaptable continuous casting slabs ranges from 1500mm to 3000mm. The dummy bar head is reliable and stable and is simple in overall structure, convenient to demount and maintain and easy to replace.

Description

technical field [0001] The invention belongs to the technical field of steelmaking-continuous casting, and provides a special dummy head for a continuous casting slab chamfering crystallizer. The applicable continuous casting slab thickness specification range is 130-420mm, and the width specification range is 1500-3000mm. Background technique [0002] The corner and transverse cracks of continuous casting slabs have troubled metallurgists for a long time. The conventional slab continuous casting crystallizer is composed of two opposite wide-face copper plates and narrow-face copper plates. The wide-face and narrow-face copper plates are clamped together. The corner is a right angle. Because of the two-dimensional heat transfer at the corner, the part solidifies quickly and shrinks early, and it is easy to form an air gap with the copper plate of the crystallizer, which deteriorates the heat transfer at the corner, resulting in a thin shell at the corner, which is easy to pr...

AI Technical Summary

Problems solved by technology

After the use of the chamfering mold, the traditional dummy head cannot meet the requirements of the chamfering mold, and it is necessary to redesign the special dummy head suitable for the chamfering mold. In addition, due to the casting process, it often needs to be replaced Casting width, especially for the case of large width span, it is necessary to set the dummy head specially for changing the width. The use of billet chamfering crystallizer, and adapt to the replacement of pouring width within a certain range

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