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Submersed nozzle capable of reducing nozzle clogging

An immersion and nozzle technology, which is applied in the direction of casting molten material containers, metal processing equipment, casting equipment, etc., can solve the problems of reducing nozzle blockage, molten steel speed difference, backflow, etc., and achieve the effect of reducing nozzle blockage

Inactive Publication Date: 2019-08-16
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that molten steel flows out from the lower edge of the tapping hole in the prior art by providing a submerged nozzle that can reduce nozzle clogging, resulting in a certain velocity difference between the upper and lower molten steel in the crystallizer. Even in some cases, there will be a certain technical problem of backflow at the upper edge of the outlet of the submerged nozzle, which achieves the technical effect of reducing the blockage of the nozzle

Method used

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  • Submersed nozzle capable of reducing nozzle clogging
  • Submersed nozzle capable of reducing nozzle clogging

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Embodiment Construction

[0017] The embodiment of the present invention provides a submerged nozzle that can reduce nozzle blockage, which solves the problem that in the prior art, molten steel will flow out from the lower edge of the tapping hole, causing the flow velocity of the upper and lower molten steel in the crystallizer to have a certain speed. Poor, even in some cases, a certain technical problem of backflow will be formed on the outlet of the submerged nozzle, and the technical effect of reducing the blockage of the nozzle is achieved.

[0018] The technical solution in the embodiment of the present invention is to solve the above-mentioned problems, and the general idea is as follows:

[0019] There are nozzle outlets on both sides of the lower part of the nozzle body, and the upper and lower edges of the nozzle outlet are smoothly transitioned. The upper and lower sides of the taphole are in a smooth transition shape along the inner wall, which can reduce the eddy current generated here d...

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Abstract

The invention discloses a submersed nozzle capable of reducing nozzle clogging. The submersed nozzle comprises a nozzle body, nozzle outlets are formed in the two sides of the lower portion of the nozzle body, and the lower edges of the nozzle outlets are in smooth transition. The inner walls of the upper and lower edges of a tapping opening are in smooth transition, eddy current generated at theposition in the molten steel flow process can be reduced, accumulation of inclusions is reduced, and the aim of reducing nozzle clogging is further achieved.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to a submerged nozzle which can reduce nozzle blockage. Background technique [0002] With the advancement of science and technology, industries such as automobiles and household appliances have higher and higher requirements for the surface quality of cold-rolled sheets, which requires the reduction of the number of inclusions in the slab that cause surface defects of cold-rolled sheets. Slag entanglement is an important defect that affects the surface quality of cold-rolled sheets. The number of large inclusions on the surface of the slab is unreasonable in the flow field of the mold, and the large fluctuations in the liquid level are all related to slag entanglement. A reasonable submerged nozzle is the one that affects the crystallizer. important factor in the flow field. In the continuous casting process, the stability of the molten steel flow in the continuous cast...

Claims

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Application Information

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IPC IPC(8): B22D41/50
CPCB22D41/50
Inventor 罗衍昭季晨曦邓小旋安泽秋刘延强陈斌李海波杨晓山王胜东潘宏伟何文远赵长亮田志红朱国森
Owner SHOUGANG CORPORATION
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