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Alumina-carbon-based flow distributing opening and preparing method thereof

A technology of aluminum carbon and flow nozzle is applied in the field of aluminum carbon cloth flow nozzle and its preparation, which can solve the problem of no refractory components, and achieve the effects of improving quality, improving thermal conductivity and excellent thermal shock resistance.

Inactive Publication Date: 2016-08-03
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the newly developed twin-roll thin strip continuous casting technology in the metallurgical field, there are no key refractory components such as distribution nozzles for refractory materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An aluminum carbon fabric spout and a preparation method thereof. 45~50wt% of large corundum particles, 20~25wt% of small corundum particles, 22~26wt% of corundum fine powder and 6~8wt% of flake graphite are used as a mixture, and 4~6wt% of phenolic formaldehyde is added to the mixture Resin, and then add the mixture and phenolic resin into a mixer and knead to obtain the mixed mud.

[0023] Add the mixed mud into the mold and mechanically form it to obtain a perforated aluminum-carbon cloth spout blank, and keep the perforated aluminum-carbon cloth spout blank at 180-220°C for 10-12 Hours, the hole-type aluminum carbon cloth outlet was made.

Embodiment 2

[0025] An aluminum carbon fabric spout and a preparation method thereof. 50~55wt% mullite large particles, 15~20wt% mullite small particles, 22~26wt% mullite fine powder and 8~10wt% flake graphite are used as the mixture, and the mixture is added 5-7wt% phenolic resin, and then add the mixture and phenolic resin into a mixer and knead to obtain a mixed mud.

[0026] Add the mixed mud into the mold and mechanically form it to obtain a slit-type aluminum-carbon cloth spout blank, and keep the slit-type aluminum-carbon cloth spout blank at 200-240°C for 8-10 Hours, the slit-type aluminum carbon cloth nozzle was made.

Embodiment 3

[0028] An aluminum carbon fabric spout and a preparation method thereof. 50~55wt% super-grade bauxite clinker large particles, 15~20wt% mullite small particles, 24~28wt% corundum clinker fine powder and 6~8wt% flake graphite were used as the mixture, plus all 6-8wt% of the phenolic resin in the mixture, and then add the mixture and the phenolic resin into a mixer for kneading to obtain a mixed sludge.

[0029] Add the mixed mud into the mold and mechanically form it to obtain a perforated aluminum carbon cloth spout blank, and keep the perforated aluminum carbon cloth spout blank at 200~240°C for 8~10 Hours, the hole-type aluminum carbon cloth outlet was made.

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Abstract

The invention relates to an alumina-carbon-based flow distributing opening and a preparing method thereof. According to the technical scheme, the preparing method includes the steps that 45wt%-55wt% of large high-aluminum raw particles, 15wt%-25wt% of small high-aluminum raw particles, 22wt%-28wt% of fine high-aluminum raw powder and 6wt%-12wt% of crystalline flake graphite serve as mixing materials, phenolic resin of 4wt%-8wt% of the mixing materials is additionally added, and then the mixing material and the phenolic resin are added into a mixer to be mixed to obtain mixed mud materials; the mixed mud materials are added into a mold and mechanically molded, and an alumina-carbon-based flow distributing opening blank is prepared; the alumina-carbon-based flow distributing opening blank is subjected to heat preservation for 8 hours to 12 hours at the temperature of 180 DEG C to 240 DEG C, and the alumina-carbon-based flow distributing opening is prepared. The alumina-carbon-based flow distributing opening has the advantages of being good in high temperature resistance, excellent in thermal shock resistance and high-temperature-liquid-metal erosion resistance and good in flow distributing effect, and the prepared alumina-carbon-based flow distributing opening meets the use requirement of the twin-roll thin-strip-blank continuous casting technology.

Description

technical field [0001] The invention belongs to the technical field of distribution nozzles. In particular, it relates to an aluminum carbon cloth spout and a preparation method thereof. Background technique [0002] The twin-roll thin strip continuous casting technology is to pour liquid metal directly into the molten pool formed by two counter-rotating water-cooled crystallization rolls and cloth nozzles (refractory materials), and rapidly cool through the water-cooled crystallization rolls (cooling rate is 10~1000 ℃ / s) and rolling to obtain a thin strip with a thickness of 1~5mm. Compared with the traditional large slab continuous casting and thin slab continuous casting process, the twin-roll thin strip continuous casting technology can greatly reduce infrastructure and equipment investment, energy consumption and environmental pollution by simplifying the process. The solidification process can cause significant changes in the microstructure of the cast material, such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622
CPCC04B35/103C04B35/185C04B35/622C04B35/66C04B2235/425C04B2235/9607C04B2235/9676
Inventor 祝洪喜骆中汉邓承继余超员文杰丁军朱清友
Owner WUHAN UNIV OF SCI & TECH
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