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Watering port

A body and shell technology, applied in the field of the upper nozzle, can solve the problems of impurity deposition, increased argon blowing volume, unstable back pressure, etc., and achieve the effects of stabilizing back pressure, preventing clogging, and quality assurance

Inactive Publication Date: 2010-10-13
SHANGHAI BAOMING REFRACTORIES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are generally two types of upper nozzles for continuous casting in the market. One is strip-shaped air-permeable, that is, the lower part of the upper nozzle refractory body is made of gas-permeable materials, and the upper part is made of air-impermeable materials. During the casting process, impurities often deposit on the upper part of the body. Phenomenon on the inner wall, resulting in clogging and adverse effects on the production process
The other is fully breathable, that is, the refractory body of the upper nozzle is all breathable materials. Although this type of product has good air permeability, it cannot stabilize the back pressure after continuous pouring in multiple furnaces, resulting in an increase in the amount of argon blowing in the later stage of pouring. adverse effect on quality

Method used

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Embodiment Construction

[0010] The present invention is an upper nozzle, comprising a refractory body 1, a pouring channel 2 located in the center of the body, a shell 3 surrounding the body and the top, an argon blowing nozzle 4 arranged on the shell 3, and an arrangement between the shell 3 and the body 1 There is an air channel 5 communicating with the argon blowing nozzle 4, wherein the refractory body 1 is divided into three layers, from top to bottom are gas permeable layer 101, gas impermeable layer 102 and gas permeable layer 101 respectively.

[0011] In the specific implementation process, the upper, middle and lower parts between the outer shell 3 and the main body 1 can be provided with sealing mortar 6, thereby forming two air passages 5, and the outer shell 3 is provided with two air passages 5 respectively. Connected argon blowing nozzle 4.

[0012] The refractory body 1 in the present invention adopts zirconium-mullite refractory material. Described casing 3 adopts iron sheet.

[00...

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Abstract

The invention discloses a watering port belonging to the field of continuous steel casting. The watering port comprises a refractory material body, a pouring path, a housing and an argon blowing port, wherein the pouring path is arranged in the center of the body, the housing surrounds the body and the top, and the argon blowing port is arranged on the housing; an air path communicated with the argon blowing port is arranged between the housing and the body; and the refractory material body is divided into three layers which are respectively a venting layer, an airtight layer and a venting layer.

Description

technical field [0001] The invention relates to a refractory material for continuous casting, in particular to an upper nozzle. Background technique [0002] At present, there are generally two types of upper nozzles for continuous casting in the market. One is strip-shaped air-permeable, that is, the lower part of the upper nozzle refractory body is made of air-permeable materials, and the upper part is made of air-impermeable materials. During the casting process, impurities often deposit on the upper part of the body. Phenomenon on the inner wall, resulting in clogging and adverse effects on the production process. The other is fully breathable, that is, the body of the upper nozzle refractory is all breathable materials. Although this type of product has good air permeability, it cannot stabilize the back pressure after continuous pouring in multiple furnaces, resulting in an increase in the amount of argon blowing in the later stage of pouring. adverse effect on qualit...

Claims

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Application Information

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IPC IPC(8): B22D41/58
Inventor 赵晓晖曹冲黄先德
Owner SHANGHAI BAOMING REFRACTORIES CO LTD
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