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Thin billet plate fast-to-replace submerged nozzle

An immersion and nozzle technology, which is applied in the direction of casting molten material containers, manufacturing tools, metal processing equipment, etc., can solve the problems of unsuitable thin slab continuous casting, etc., and achieve the advantages of reduced risk, good thermal shock resistance and extended life Effect

Inactive Publication Date: 2014-10-15
VESUVIUS ADVANCED CERAMICS (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this structure has good practical effect, it is not suitable for thin slab continuous casting with narrow mold

Method used

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  • Thin billet plate fast-to-replace submerged nozzle
  • Thin billet plate fast-to-replace submerged nozzle
  • Thin billet plate fast-to-replace submerged nozzle

Examples

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Embodiment Construction

[0018] The invention discloses a quick-change submerged nozzle for thin slabs, such as figure 2 As shown, it includes the nozzle body and the water outlets 13 arranged on both sides of the bottom of the nozzle body.

[0019] Of course, the number and positions of the water outlets can be set as required. Said water outlet 13 can also be provided with one, which is only arranged at the bottom, that is, on the same axis as the inner cavity of the water outlet body.

[0020] The nozzle body includes a straight section 1 arranged at the upper end and a horn section 12 connected to the straight section 1 . The diameter of the inner chamber 11 of the straight section 1 is consistent up and down, and the outer surface is in the shape of a barrel. Such a structure achieves the effect of quick change very well. Specifically, the straight line section 1 is arranged above the slag line layer, and the outer surface profile of the horn section 12 is flat, and the cross section is horn-...

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Abstract

The invention provides a thin billet plate fast-to-replace submerged nozzle, which comprises a nozzle body and a water outlet formed in the bottom of the nozzle body, wherein the nozzle body comprises a linear section arranged at the upper end and a horn section connected with the linear section, the upper end of the barrel diameter of the horn section is greater than the lower end of the barrel diameter of the horn section, in addition, the smooth transition is realized from the top to the bottom, and the water outlet is in a flat shape. Compared with the prior art, the thin billet plate fast-to-replace submerged nozzle has the advantages that the thin billet plate fast-to-replace submerged nozzle is applicable to the thin plate billet continuous casting of narrow crystallizers so that steel flow has better stability inside the nozzle and at the outlet part of the nozzle, molten steel can reasonably flow in the crystallizer, and the unstable state of the liquid level of the molten steel is reduced, so the quality of a steel billet is improved, better shock-resistant performance is realized, the service life of the submerged nozzle is prolonged, and the risk of casting interruption is reduced.

Description

technical field [0001] The invention relates to a thin slab quick-change submerged nozzle for continuous casting. Background technique [0002] Continuous casting has become the main way of steelmaking production in modern iron and steel enterprises. In the continuous casting technology, in order to improve the quality of the slab, there is usually a submerged nozzle between the tundish and the mold. Its main functions are: (1) to prevent secondary oxidation, nitriding and splashing of molten steel; (2 ) to adjust the flow state and injection speed of molten steel; (3) to prevent non-metallic inclusions of mold slag from being involved in molten steel, and at the same time play an important role in promoting the floating of molten steel inclusions; Quality is decisive. [0003] The most common configuration of the existing quick-change submerged nozzle is a conical tube of refractory material with a zirconium slag line layer and a discharge hole. This conical tube shape is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/10B22D41/50
Inventor 詹姆斯·欧文斯通孙林娈
Owner VESUVIUS ADVANCED CERAMICS (CHINA) CO LTD
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