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CONTINUOUS CASTING METHOD FOR PREVENTING CLOG BETWEEN UPPER NOZZLE AND SUBMERGED ENTRY NOZZLE AND ECCENTRIC SLOT NOZZLE THEREOF
CONTINUOUS CASTING METHOD FOR PREVENTING CLOG BETWEEN UPPER NOZZLE AND SUBMERGED ENTRY NOZZLE AND ECCENTRIC SLOT NOZZLE THEREOF
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机译:连续浇铸法防止上部喷嘴与淹没入口喷嘴及其偏心槽喷嘴之间的堵塞
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摘要
PURPOSE: A continuous casting method and its eccentric slot nozzle are provided to prevent a clog of refractories by accumulating non-metal refractories and to minimize blow hole defects by minimizing argon gas. CONSTITUTION: In controlling an amount of melted steel from a tundish to a mold through a slide gate, an eccentric slot nozzle is additionally installed in an outlet of the tundish. Non-metal refractories are flown through the center of the melted steel stream by maximizing a whirlpool rotating stream. Thereby, a clog by the non-metal refractories between an upper nozzle and a submerged entry nozzle is prevented. A mixing of fine bubbles is minimized by minimizing argon gas. Thereby, blow hole defects are minimized. A mixing of a tundish slag is prevented by suppressing a generation of a vortex. The yield rate is improved by minimizing a remaining amount of the tundish.
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