CONICAL CASING FOR CONTINUOUS VERTICAL METAL CASTING CRYSTALLIZER Russian patent published in 1997 - IPC

FIELD: metallurgy. SUBSTANCE: crystallizer is formed as square or rectangular tube whose inner walls have convex upper central part and flat parts adjacent to corners. Convexity is defined by two symmetrical sinusoid branches with flexure points positioned at a distance of 1/4 the width of convex part. Amplitude is 0.0075-0.012 the width of inner wall in its upper part. Width of convex part of wall exceeds sinusoid amplitude value by 60-125 times. Height of convex part exceeds sinusoid amplitude by 150-250 times. Amplitude of convex part in sections perpendicular to process axis is gradually reducing from upper end of crystallizer to wall convex-to-flat junction places. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 dwg