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Aluminum-zirconium-carbon composite nozzle

A technology of carbon compounding and nozzle, which is applied in the direction of casting melt containers, metal processing equipment, casting equipment, etc., can solve the problems of short service life and large scouring, and achieve the goals of reducing production costs, preventing liquid splashing and prolonging service life Effect

Pending Publication Date: 2018-10-12
JIANGSU TAIRUI REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Ordinary tundish nozzles use all-aluminum carbon nozzles, which cannot meet the requirements of some special steels, and the erosion is too large and the service life is short

Method used

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  • Aluminum-zirconium-carbon composite nozzle

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] The structure of the present invention is as figure 1 As shown, it includes an aluminum-carbon shell with a nozzle in the middle, and a zirconia inner core is inlaid on the surface of the nozzle of the aluminum-carbon casing. The nozzle includes an upper nozzle and a lower nozzle, wherein the inner wall of the upper nozzle is arc-shaped.

[0016] The central angle of the arc of the inner wall of the upper nozzle is 40-70°.

[0017] The thickness of the zirconia inner core is 5-7cm, and the thickness gradually increases from top to bottom at the upper nozzle.

[0018] The present invention uses a cold isostatic press to press the aluminum-carbon body part, and the inner core part is made of a combination of two kinds of zirconia-fired zirconia parts. The inner zirconia-zirconium parts have a longer service life than the aluminum-carbon structure under the same condit...

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Abstract

The invention provides an aluminum-zirconium-carbon composite nozzle. The nozzle comprises an aluminum-carbon shell with a nozzle body formed in the middle. A zirconia inner core is embedded in the surface of the nozzle body of the aluminum-carbon shell. The nozzle body comprises an upper nozzle portion and a lower nozzle portion, wherein the inner wall of the upper nozzle portion is in an arc shape. According to the composite nozzle, an aluminum-carbon body portion is pressed by means of a cold isostatic press, the inner core portion adopts a zirconia fired zirconium component, the compositenozzle is manufactured by combining the two portions, and on equal conditions, the service life of the inner zirconia zirconium component is longer than that of an aluminum-carbon structure.

Description

technical field [0001] The invention relates to the field of refractory material containers, in particular to an aluminum-zirconium-carbon 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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/54B22D41/50
CPCB22D41/50B22D41/54
Inventor 吴建湘吴佩霞
Owner JIANGSU TAIRUI REFRACTORY