Bowl type turbulence-inhibiting flow-stabilizing flow distribution device for continuous casting of thin band

Abstract

The invention relates to a bowl type turbulence-inhibiting flow-stabilizing flow distribution device for the continuous casting of a thin band, comprising a flow distributor and a casting water gap, wherein the flow distributor is arranged above a roller and in a V-shaped cavity structure; the casting water gap extends into a cavity of the flow distributor; the upper part of the flow distributor is provided with an opened rectangular cavity, the lower part of the flow distributor is a long and narrow slot cavity with a V-shaped section, and the bottom of the flow distributor is transited with an arc; the two skew walls of the slot cavity are provided with a plurality of flow distribution holes near the bottom of the slot cavity; a horizontal arranged hole plate positioned in the V-shaped long and narrow slot cavity and above the flow distribution holes covers the V-shaped long and narrow slot cavity; one to three rows of small holes are uniformly distributed on the hole plate along a roll shaft direction; a bowl type turbulence-inhibiting flow-dividing device is arranged in the center of the hole plate. The invention obviously improves the distribution of liquid steel in a molten pool, promotes the liquid steel to stably flow and inhibits the influence of the impact of casting flows so that the flow of the liquid steel is more reasonable and the temperature distribution is more uniform, thereby enhancing the casting quality of the thin band.

Description

technical field [0001] The patent of the invention relates to a liquid steel steady flow distribution pouring device used in the thin strip continuous casting production process, which belongs to the technical field of thin strip continuous casting. Background technique [0002] In thin strip continuous casting production, the reasonable distribution and distribution of molten steel in the molten pool has a very important impact on the final strip quality, so the thin strip continuous casting distribution device plays a very important role in the entire thin strip production. Various countries have launched a lot of research in this regard, such as the disclosed dispensers of US Pat. The molten steel flowing in from the tundish flows into the flow distributor through a row of flow holes in the distributor. The flow distributor described in Chinese patents ZL01276402.7 and ZL02283420.6 is an integral hoisting device, and the flow distribution is achieved through the distribu...

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Problems solved by technology

[0003] In the past, the problem of the traditional thin strip pouring nozzle or flow distributor is mainly that there is no internal device to suppress or reduce the turbulent flow and the impact force of the stream during the flow of molten steel, which leads to unstable flow of molten steel, which in turn causes Fluctuation of the liquid level in the molten pool is intensified, and the temperature inside the molten pool is uneven; the distribution of flow is uneven, resulting in uneven distribution of fluid and temperature along the width direction of the strip; If the shell falls off, it will easily lead to abnormal continuous casting process and affect the quality of strip steel

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