Continuous casting crystallizer function protection material special for ESP high-carbon steel

Abstract

The invention belongs to the technical field of ferrous metallurgy auxiliary materials, and particularly relates to a continuous casting crystallizer function protection material special for ESP high-carbon steel. The material comprises, by weight percent, 40 to 50% of a premelting material, 6.5 to 10.5% of light burning sodium carbonate, 17 to 23% of fluorite powder, 0.5 to 5% of sodium fluoride,0.5 to 5% of bentonite, 4 to 8% of calcite, 0.5 to 5% of manganese carbonate, 6 to 10% of lithium carbonate, 0.5 to 5% of carbon black, 0.5 to 5% of graphite carbon and 0.1 to 3.2% of calcium lignosulphonate.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to a special continuous casting crystallizer functional protection material for ESP high-carbon steel. Background technique [0002] At present, the thin-slab continuous casting and rolling technologies that have been put into industrial production in the world mainly include six process types: CSP, ISP, QSP, FTSR, CONROLL and TSP. Although the above-mentioned production lines have mature technology and high reliability, none of them can produce thinner and wider strip steel (such as thickness ≤ 0.8 mm, width ≥ 1 200 mm); and the rolling process will change when the speed limit and load limit are reached. Uncertainty, problems such as difficulty in threading, wave shape of the steel strip, damage to the nip and out-of-tolerance appear. To this end, Arvedi of Italy and China First Heavy Industry Co., Ltd. jointly developed the ESP ultra-thin str...

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Problems solved by technology

However, the liquid slag layer of this patent is too thin, which can easily lead to uneven inflow of slag film, easy to cause slag inclusion and steel breakout, and is not suitable for ESP high carbon steel

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