Three-section combined water gap

Abstract

The invention provides a three-section combined water gap. The three-section combined water gap comprises three zirconium parts, wherein two zirconium parts are hollow cylinders; and one zirconium part is a hollow platform body; the three zirconium parts are radially adhered and pressed and are hollowed out to form a water gap channel. Compared with an existing four-section water gap, the three-section combined water gap has the same length; a four-section structure is replaced by a three-section structure, so that the production cost is decreased; the risk of steel penetrating is reduced; andmeanwhile, the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of refractory material containers, in particular to a three-section composite nozzle. Background technique [0002] The tundish nozzle is a refractory container used in short-process steelmaking. It first receives molten steel poured from the ladle, and then is distributed to each crystallizer by the tundish nozzle. As an important basic raw material, steel plays a pivotal role in the economic development of countries all over the world. [0003] In the 1950s, the continuous casting technology, which is the symbol of the iron and steel industry revolution, was developed, which is characterized by fast process speed, concentrated investment and increasingly perfect technology. In 1970, the continuous casting ratio in the world was only 5.6%, but by 1990, the continuous casting ratio in the world had reached 62.4%, and the continuous casting ratio in some developed countries exceeded 95%. In recent years, many steelma...

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Problems solved by technology

[0005] The existing tundish nozzle is pressed by four zirconium parts, such as figure 1 As shown, the bonding parts of the four zirconium parts have four risks of steel penetration

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