Effects of K₂O on Properties of Low Fluoride Content Mould Flux for High Speed Continuous Casting

Abstract:

In order to reduce fluorine pollution, partial fluoride could be replaced by K₂O in mould flux. The effects of K₂O on melting temperature, viscosity, fluidity, surface tension, Al₂O₃ inclusion and adsorption of low fluoride content mould flux for high speed continuous casting were studied. The results showed that with the increase of K₂O content, melting temperature, viscosity and surface tension of mould flux decreased obviously, and fluidity and Al₂O₃ inclusion adsorption increased. When basicity was 0.81, 1.03 and 1.22, the suitable content of K₂O was 5%, 5% and 4% respectively, which could play an effective role. Partial fluoride could be replaced by K₂O in mould flux.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 2899-2902
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.2899
• Online since: July 2011
• Authors: Yan Qing Lu, Xing Fang, Guo Dong Zhang
• Keywords: High Speed Continuous Casting, K₂O, Low Fluoride Content, Mould Flux

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