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Method and device for dynamically maintaining conicity of narrow face of slab crystallizer on line

A crystallizer and taper technology, which is applied in the field of online dynamic maintenance of the taper of the narrow side of the slab mold, can solve the problem that the narrow side taper of the slab continuous casting mold can not be fundamentally solved, and the narrow side taper can be adjusted

Inactive Publication Date: 2015-03-25
CONTINUOUS CASTING TECH ENG OF CHINA
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Problems solved by technology

[0004] Patent No. ZL200410006368.5 is a technology for online control of the taper of the narrow side of the crystallizer. By measuring the ratio of the heat flow of the narrow side of the mold to the heat flow of the wide side, it is determined whether the taper of the mold is appropriate, but the upper and lower sides of the mold cannot be changed online. The narrow side taper can be adjusted according to the mouth width, and this criterion is only applicable to medium carbon sub-peritectic steel, which cannot fundamentally solve the problem of narrow side taper running in the slab continuous casting mold

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  • Method and device for dynamically maintaining conicity of narrow face of slab crystallizer on line
  • Method and device for dynamically maintaining conicity of narrow face of slab crystallizer on line

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Embodiment Construction

[0020] figure 2 Description of marks: clamping rod 1, outer arc water tank 2, clamping oil cylinder 3, disc spring 31, piston rod 32, narrow side copper plate 4, wide surface copper plate 5, inner arc water tank 6.

[0021] image 3 Description of markings: narrow side width adjustment hydraulic cylinder 7, narrow side moving plate 9, narrow side back plate 10, narrow side foot roller 11, displacement sensor 12, proportional servo valve 13.

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] as attached figure 2 As shown, the device for dynamically maintaining the taper of the narrow side of the slab crystallizer on-line includes a narrowing mechanism and a wide-side clamping mechanism. Copper plate 4, wide face copper plate 5 and inner arc water tank 6 form, and clamping oil cylinder 3 contains disc spring 31, piston rod 32. One end of the clamping rod 1 is pressed on the outer wall of the inner arc wate...

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Abstract

The invention belongs to the technical field of continuous casting and particularly relates to a method and device for dynamically maintaining the conicity of a narrow face of a slab crystallizer on line. The method and device for dynamically maintaining the conicity of the narrow face of the slab crystallizer on line can prevent conicity deflection of the narrow edge of the crystallizer in the casting process. According to the method and device for dynamically maintaining the conicity of the narrow face of the slab crystallizer on line, the width changes of an upper port and the width changes of a lower port of the crystallizer are monitored in real time and compensated dynamically in the casting process, it is guaranteed that the conicity of the narrow face is always maintained nearby a target value, the problem of the conicity deflection of the narrow edge of the crystallizer in the slab continuous casting process is solved thoroughly, and therefore the method and device have distinctly important significance to improvement of the quality of casting slabs, reduction of steel leakage accidents, prolonging of the service life of copper plates, improvement of the operation efficiency of a casting machine and the like.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and particularly relates to a method and a device for dynamically maintaining the taper of the narrow surface of a slab crystallizer on-line, which can prevent the narrow side of the crystallizer from running out of the cone during the pouring process. Background technique [0002] The taper of the mold is a parameter that needs to be strictly controlled. Usually, it is reasonably set according to the steel type and the section of the slab before pouring. The taper is not allowed to change during the normal pouring process. If the taper is too small, the air gap between the copper plate of the mold and the billet shell will increase, and the thermal resistance will increase significantly, which will weaken the heat transfer cooling effect, and the billet will not be cooled enough, resulting in thinning of the billet shell and prone to bulging. Conversely, if the taper is too large, the...

Claims

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Application Information

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IPC IPC(8): B22D11/16B22D11/057
Inventor 陈阳宁曙光钟光姚军李桢谢长川
Owner CONTINUOUS CASTING TECH ENG OF CHINA
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