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Chamfered crystallizer narrow-face copper plate for slab continuous casting

A technology of chamfering crystallizers and narrow-faced copper plates, which is applied in the fields of metal solidification and continuous casting, can solve problems such as processing costs and safety hindering the improvement of crystallizer structure, affecting logistics and contract order delivery time, and hindering the rapid development of crystallizers, etc. , to achieve the effect of eliminating crack defects, ensuring the cooling effect of chamfering, and ensuring good contact

Active Publication Date: 2015-11-18
XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem caused by the shrinkage of the molten steel volume during the crystallization process is not sufficiently considered. The shrinkage volume will cause poor heat conduction between the billet in the lower part of the mold and the inner wall of the narrow plate of the mold.
In order to avoid crack defects at the edge of the subsequent rolled steel plate, it is often necessary to perform corner cutting on the continuous casting slabs with corner transverse cracks and corner longitudinal crack defects, but this not only greatly increases the production cost, but also Reduced production efficiency, seriously affected the logistics of iron and steel enterprises and the delivery time of contract orders
[0004] On the other hand, safety considerations, processing difficulty and cost issues, as we all know, the crystallizer is the key equipment for billet continuous casting, its design and manufacturing quality directly affects the normal and stable continuous casting production, the mold copper plate processing difficulty It is conceivable that the processing of irregular or irregular mold copper plates (especially mold copper plates with curved surfaces) is even more daunting for processors. On the other hand, processing costs and safety are hindering molds from moving to a more reasonable structure. Important reasons for promotion
It hinders the rapid development of crystallizers, and even hinders the formation of divergent thinking of technicians in the technical field

Method used

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  • Chamfered crystallizer narrow-face copper plate for slab continuous casting
  • Chamfered crystallizer narrow-face copper plate for slab continuous casting
  • Chamfered crystallizer narrow-face copper plate for slab continuous casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Such as figure 1 , 2 , 3, a slab continuous casting chamfering mold narrow-surface copper plate, including a large surface area 3 and a side chamfering area 2, the large surface area and the side chamfered back is provided with one or more up and down through For the cooling water tank, the longitudinal cross-sectional view of the working surface of the large area is a broken line. The broken line shape is composed of a first broken line and a vertical line. The included angle between the first fold line and the side surface of the narrow copper plate 1 is 6 degrees. The length of the first fold line is 22% of the height of the copper plate of the mold. The angle a is the angle between the working surface of the side chamfering area of ​​the vertical line and the side surface of the narrow copper plate. The angle a1 is the angle between the working surface of the side chamfering area of ​​the first fold line and the side surface of the narrow copper plate. ...

Embodiment 2

[0025] Example 2: Such as figure 1 , 2 , 3, a slab continuous casting chamfering mold narrow-surface copper plate, including a large surface area 3 and a side chamfering area 2, the large surface area and the side chamfered back is provided with one or more up and down through For the cooling water tank, the longitudinal cross-sectional view of the working surface of the large area is a broken line. The fold line shape is composed of a first fold line and a vertical line, the included angle between the first fold line and the side surface of the narrow copper plate 1 is 10 degrees, and the length of the first fold line is 31% of the height of the mold copper plate. The angle a is the angle between the working surface of the side chamfering area of ​​the vertical line and the side of the narrow copper plate, and the angle a1 is the angle between the working surface of the first fold line side chamfering area and the side of the narrow copper plate, so The side chamfering area ch...

Embodiment 3

[0026] Example 3: Such as figure 1 , 2 , 3, a slab continuous casting chamfering mold narrow-surface copper plate, including a large surface area 3 and a side chamfering area 2, the large surface area and the side chamfered back is provided with one or more up and down through For the cooling water tank, the longitudinal cross-sectional view of the working surface of the large area is a broken line. The broken line shape is composed of a first broken line and a vertical line. The included angle between the first fold line and the side surface of the narrow copper plate 1 is 7 degrees. The length of the first fold line is 27% of the height of the copper plate of the mold. The angle a is the angle between the working surface of the side chamfering area of ​​the vertical line and the side surface of the narrow copper plate. The angle a1 is the angle between the working surface of the side chamfering area of ​​the first fold line and the side surface of the narrow copper plate. ...

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Abstract

The invention discloses a chamfered crystallizer narrow-face copper plate for slab continuous casting. The copper plate comprises a large-face area and a side-face chamfered area, wherein one or more vertically-through cooling water baths are arranged on the back of the large-face area and the back of the side-face chamfered area, and the longitudinal section of the working face of the large-face area is in the shape of a folded line. Under the action of chamfering, billet steel can be better attached to the inner wall of a crystallizer in the whole process of solidification of molten steel.

Description

Technical field [0001] The invention relates to the technical field of metal solidification and continuous casting, in particular to a narrow-faced copper plate of a slab continuous casting chamfering mold. Background technique [0002] With the development of world metallurgical technology, modern continuous casting technology continues to advance, and castable steel types continue to expand. Some high-alloy, high-quality, and high-crack-sensitive steels have been continuously produced in the continuous casting production process of large steel companies. One of the main technological advancements is the development of continuous casting technology for large-section billets. With the development of continuous casting technology for large-section billets, the compression ratio of steel has increased, and the quality of steel products has improved. However, the adverse effect brought by the increase in the section of the slab is that the slab needs to be bent and straightened in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/059
Inventor 朱书成赵家亮黄国团廖春谊郭明源周彦峰
Owner XIXIA LONGCHENG SPECIAL MATERIALS CO LTD