Behavior of Liquid Steel Meniscus in Mold of Continuous Caster

Behavior of liquid steel meniscus is studied on the c. c. simulator. Low melting point Pb-Sn-Bi alloy and silicon oil are adopted as simulators of molten steel and slag, respectively. The shape of meniscus and the fluctuation and motion of liquid metal in meniscus zone are investigated. It is shown that the superheat of molten metal and electromagnetic force have influence on the shape of meniscus, and that the fluctuation at meniscus is intensified by increasing mold oscillation amplitude and casting speed. The velocity fields of liquid metal at meniscus are measured during the positive-strip period and the negative-strip period, respectively, from which the mechanism of oscillation mark formation is verified.