Method for improving continuous casting blank quality and vibration support roller device

Abstract

The invention belongs to the field of continuous casting of metals, in particular to a method for improving the quality of continuous casting slabs and a vibrating support roller device. In this method, the vibrating support rollers that are closely attached to the outer wall of the continuous casting slab shell maintain synchronous rotation with the surface of the continuous casting slab, and at the same time, under the drive of the vibration source, vibrate perpendicular to the thickness direction of the slab or parallel to the casting direction, and This vibration is transmitted to the solidified shell with a liquid core by contact. The vibration support roll device used in the above method is composed of the vibration support roll closely attached to the outer wall of the continuous casting slab, the vibration transmission pipeline connected with it and the vibration generation source. Compared with the prior art, the present invention has the advantages of increasing the equiaxed grain rate in the center of the continuous casting slab through the vibrating support roller device with simple structure and easy control, so as to significantly improve the shrinkage cavity and porosity in the center of the continuous casting slab, reduce segregation and effectively avoid the use of The advantage of improving the quality of continuous casting slabs is the generation of rolling cracks caused by light pressure at the end of solidification.

Description

technical field [0001] The invention belongs to the field of continuous casting of metals, in particular to a method for improving the quality of continuous casting slabs and a vibrating support roller device. Background technique [0002] In the existing continuous casting production technology of steel, the central quality of continuous casting slabs is reduced due to separation and crystallization, especially the central segregation, central shrinkage cavity, and central porosity caused by high alloy steel and high carbon steel continuous casting slabs. The problem is the core problem that affects the quality of the rear rolled material. In order to solve the above problems, many patents and technologies have been developed in this technology for a long time. These patents and technologies are mainly divided into two categories: one is electromagnetic stirring technology; the other is soft pressing or casting and rolling technology at the end of solidification. Chinese P...

AI Technical Summary

Problems solved by technology

There are two problems in the implementation of this technology: one is that a huge soft reduction device needs to be added at the end of the solidification of the continuous casting slab; However, a large light reduction will cause cracks at the solidification front of the slab for some steel types that are highly sensitive to cracks, which is difficult to control

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