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Soaked carbon-free protecting pipe

A technology for protecting pipes and materials, which is applied in the direction of casting melt containers, manufacturing tools, metal processing equipment, etc., can solve problems such as short service life, poor corrosion resistance, and influence on steel quality, so as to improve service life and anti-scouring performance Effect of improvement, clogging up

Inactive Publication Date: 2002-08-07
于红芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the quartz protective tubes in various steel mills solve the impact of carburization on steel. However, the quartz protective tubes have a short service life due to the poor anti-scouring and anti-corrosion performance of silicon oxide, and have a negative effect on the continuous casting continuity of steel. Unfavorable factors, and the washed and eroded silicon oxide also has a certain impact on the quality of steel

Method used

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  • Soaked carbon-free protecting pipe
  • Soaked carbon-free protecting pipe
  • Soaked carbon-free protecting pipe

Examples

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Embodiment Construction

[0018] like figure 1 Shown: Fused corundum particles and fine powder 70%, graphite 30%, binder 12% to form the general body 1, zirconia particles and fine powder 100% additives and binder 5% to form the carbon-free layer 3, zirconia 100%, other materials 5%, and binder 5% constitute the slag line material 4. The three layers of materials are mixed separately, and the carbon-free impregnated protective tube shown in the figure is formed by one or more moldings.

[0019] The protection tube was used in stainless steel continuous casting in a steel factory, and the quartz protection tube was used for 2 hours and 05 minutes, while the protection tube of the present invention was used for 8 hours and 50 minutes, and had no carbonation effect on the steel.

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Abstract

The protecting pipe for continuously-casting steel is made up by using general refractory material as basis and adding ceramic material through the processes of mixing, forming and heat treatment. Said product possesses the features of resisting scouring abrasion, resisting corrosion, good thermal stability and long service life. Said invention is applicable to protecting pipe from steel ladle tointermediate ladle and from intermediate ladle to crystallizing device in the continuously-casting steel, and protecting pipe in the process of continuously casting sheet billet and impregnation protecting pipe.

Description

Technical field: [0001] The invention relates to a protective pipe for continuous casting of steel. Background technique: [0002] In the process of continuous steel casting, the quality of steel is greatly affected by the impregnated protective tube, especially stainless steel and low carbon steel are affected by the carbonation of the aluminum-carbon protective tube and the poor continuity of the cast steel caused by the blockage of the protective tube during the continuous casting process. Decreases the quality of the steel. [0003] The original aluminum-carbon-aluminum-zirconium carbon protection tubes and impregnated protection tubes for continuous casting use carbonaceous materials such as pitch and phenolic resin as binders, and form carbon-bonded products after firing or general heat treatment, which are in contact with molten steel during use. Parts are washed and eroded by molten steel, and part of the carbon melts into the molten steel, which increases the carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/10B22D41/54
Inventor 于红芬
Owner 于红芬
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