There is often flocculent flow at nozzle during casting rare earth steel products with continuous casting ma-chine so that the casting with normal casting speed could not be met. In severe case,the flocculation at tundish nozzle cau-ses interruption of production so that continuous casting production is seriously affected. The steelmaking technologies of rare earth steel are optimized by studying the reaction mechanisms after adding rare earth elements into molten steel as well as analyzing the effects of oxygen content of molten steel,oxidizability of slag,protective casting of continuous casting ma-chine and casting temperature on yield of rare earth Ce. As a result,the yield and castability of rare earth elements in mol-ten steel are improved as well as the number of continuous casting heats for rare earth steel products reaches 25 so that scale production of rare earth steel products is ultimately achieved.
关键词
稀土钢产品/絮钢/可浇性/规模化生产
Key words
rare earth steel products/flocculent steel/castability/scale production
维普
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