Submerged nozzle and use method thereof

An immersion and nozzle technology, which is used in casting melt containers, metal processing equipment, casting equipment, etc., can solve the problems of reducing slag in conventional slab continuous casting, eliminating dead zones, and immersion nozzles cannot be realized at the same time. The effect of reducing the dead zone of the mold, reducing the occurrence of slag and eliminating the dead zone

Inactive Publication Date: 2020-08-11
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a submerged nozzle and its use method, which solves or partly solves the technical problems that the submerged nozzle in the prior art cannot be realized at the same time: reducing conventional slab continuous casting slag, eliminating dead zone and reducing clogging

Method used

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  • Submerged nozzle and use method thereof
  • Submerged nozzle and use method thereof

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Embodiment Construction

[0017] see figure 1 , the embodiment of the present invention provides a submerged nozzle comprising: nozzle body 1 .

[0018] A nozzle outlet hole 2 is opened on the side wall of the nozzle body 1 .

[0019] A bottom hole 3 is opened at the bottom of the nozzle body 1 .

[0020] Several circles of bosses 4 are fixedly arranged in the bottom hole 3 .

[0021] Specific embodiments of the present application Since the side wall of the nozzle body is provided with a nozzle outlet hole, and the bottom of the nozzle body is provided with a bottom hole, so the bottom hole has a diversion effect, which can reduce the flow rate of molten steel at the outlet of the bottom hole, and the crystallizer liquid The surface velocity is significantly reduced, which is beneficial to reduce the occurrence of slag entrainment. Due to the diversion effect of the bottom hole, fresh molten steel enters the bottom of the nozzle body, which can effectively reduce the dead zone of the crystallizer an...

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Abstract

The invention discloses a submerged nozzle and a use method thereof, and belongs to the technical field of continuous casting. The submerged nozzle includes a nozzle body; the side wall of the nozzlebody is provided with a nozzle outlet hole; the bottom of the nozzle body is provided with a bottom hole; and a plurality of ring bosses are fixedly arranged in the bottom hole. The submerged nozzle and the use method thereof can simultaneously achieve the effects of reducing conventional slab continuous casting slag entrapment, eliminating dead zones and reducing nozzle blockage.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to a submerged nozzle and a using method thereof. Background technique [0002] Continuous casting of conventional thickness slabs is an important means of producing high-quality cold-rolled sheets due to their high compression ratio. The problems encountered in the conventional slab continuous casting production process are mainly manifested in: (1) unreasonable flow field control in the mold leads to slag entrainment; (2) non-uniform chemical composition of the slab due to dead zones in the flow field in the mold , affecting product performance; (3) Aluminum oxide inclusions in molten steel gather on the inner wall of the nozzle to cause nozzle blockage, increase production costs, and endanger surface quality. Therefore, reducing mold slag entrainment, reducing molten steel dead zone and reducing nozzle clogging are beneficial to reduce the production cost of conventio...

Claims

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Application Information

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IPC IPC(8): B22D41/50
CPCB22D41/50
Inventor 邓小旋李海波朱国森初仁生季晨曦刘柏松潘宏伟邵肖静张宏艳尹娜刘国梁罗衍昭马文俊吕迺冰
Owner SHOUGANG CORPORATION
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