Argon protective device for ingot steel casting

A technology of argon protection and steel ingot pouring, which is applied in the field of protection devices, can solve problems such as poor product quality and various physical properties, and achieve the effects of reducing secondary oxidation problems, reducing oxidation reactions, and improving internal quality

Inactive Publication Date: 2010-06-09
SHANGHAI HEAVY MACHINERY PLANT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is easy to cause the molten steel to undergo oxidation reaction and generate oxides; during the solidification process of the steel ingot, it will accumulate into large-grained endogenous inclusions, which will have adverse effects on product quality and various physical properties.

Method used

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  • Argon protective device for ingot steel casting
  • Argon protective device for ingot steel casting
  • Argon protective device for ingot steel casting

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Embodiment Construction

[0012] Due to the height difference between the ladle nozzle and the bell mouth of the center injection pipe when the molten steel is poured, the molten steel is exposed to the air, and elements such as manganese (Mn), silicon (Si) and sulfur (S) in the molten steel are easily combined with oxygen in the air. An oxidation reaction occurs to produce oxides. When the molten steel solidifies, it becomes an inclusion that is harmful to the internal quality of the product, and has an adverse effect on the subsequent processing and inspection of the product.

[0013] In order to solve this problem, the present invention provides an argon protective device for pouring steel ingots. see figure 1 , 2 As shown, the argon protection device is cylindrical and consists of an inner cylinder 6 and an outer cylinder 5 . A connecting plate 4 connecting the inner cylinder 6 and the outer cylinder 5 is provided at the lower ends of the inner cylinder 6 and the outer cylinder 5 . The connecti...

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Abstract

The invention discloses an argon protective device for ingot steel casting, which is composed of an inner barrel and an outer barrel; a connecting plate for connecting the inner barrel and the outer barrel is arranged at the lower end of the inner barrel and the outer barrel, ceramic fiber sealing sleeve is filled between the inner barrel and the outer barrel at the upper end of the connecting plate, and the ceramic fiber sealing sleeve is higher than the upper end surface of the inner barrel and the outer barrel; an argon lead-in pipe which is extended outwards is arranged on the outer barrel wall at the lower end of the connecting plate, and a plurality of through holes which lead argon out are arranged on the inner barrel wall corresponding to the argon lead-in pipe, and the height between the upper end surface of the connecting plate and the upper end surface of the inner barrel and the outer barrel is more than the height between the lower end surface of the connecting plate and the lower end surface between the inner barrel and the outer barrel. The argon protective device can reduce secondary oxidization in the casting process of molten steel, reduce the mixed sundries in the molten steel and improve the molten steel purity degree.

Description

technical field [0001] The invention relates to a protective device used in the pouring process of large steel ingots, in particular to an argon protective device for pouring steel ingots. Background technique [0002] During the pouring process of large forgings, due to the height difference between the ladle and the tundish, and between the ladle and the bell mouth of the intermediate injection pipe, part of the molten steel is exposed to the atmosphere during pouring. In this way, it is easy to cause the molten steel to undergo oxidation reaction to generate oxides; during the solidification process of the steel ingot, it accumulates into large-grained endogenous inclusions, which has adverse effects on product quality and various physical properties. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an argon protection device for pouring steel ingots, which can reduce secondary oxidation of molten steel during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/12
Inventor 许天华李奇王志刚缪伟钢刘立鹤朱伟伟
Owner SHANGHAI HEAVY MACHINERY PLANT
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