Dummy bar head special for chamfered mold for continuous casting slabs

A technology of chamfering mold and dummy head is applied in the field of steelmaking and continuous casting, which can solve the problems of redesign and the inability of the dummy head to meet the requirements for the use of chamfering mold, and achieve easy replacement and avoid corner longitudinal crack defects. , Design reliable effect

Active Publication Date: 2013-02-06
SHOUGANG CORPORATION
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  • Claims
  • Application Information

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 n...

Method used

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  • Dummy bar head special for chamfered mold for continuous casting slabs
  • Dummy bar head special for chamfered mold for continuous casting slabs

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Embodiment Construction

[0017] The present invention comprises a head section 1, a gasket 2, and a chamfering piece 3; the width of the gasket 2 is adjustable, and the chamfering of the chamfering piece 3 corresponds to the chamfering of the crystallizer.

[0018] A steel factory used a chamfering crystallizer when casting a 250mm×1800mm continuous casting slab on a continuous casting machine, and used the special dummy head in the present invention. The size of the head section was 250mm×1400mm, and the size of the gasket was 250mm×350mm. The size of the chamfering piece is 250mm×50mm, and the size of the chamfering position is 30mm×40mm. The surface quality of the cast continuous casting slab is excellent, and the casting process is stable.

[0019] A steel factory used a chamfering crystallizer when casting a 250mm×2400mm continuous casting slab on a continuous casting machine, and used the special dummy head in the present invention. The size of the head section was 250mm×1950mm, and the size of t...

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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...

Claims

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Application Information

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IPC IPC(8): B22D11/08
Inventor 李本海许晓东赵新宇刘洋朱志远王文军李永东白学军姜中行王玉龙李景光关春阳甄新刚赵晶王志刚韦耀环王臻明吕延春王海宝刘茁松隋大鹏
Owner SHOUGANG CORPORATION
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