I5182 strip could be cast at speed of 60 m/min by the
VHSTRC. The casting speed of 60 m/min much higher than that
of the CTRCA. The casting speed of the CTRCA is usually
slower than 10m/min. The strip did not stick to the roll without
the parting material. The as-cast strip and the roll after casting are
shown in Figure 9. The both edges were strait and the width was
constant. The ripple pattern existed at the strip and the roll. The
ripple pattern of the VHSTRC was extremer than that of
UEDTRC. The vibration of the meniscus at the tip of the nozzle
plate became vigorous as the roll speed increased. The roll
temperature after every rotation became higher as the roll speed
increased. The ripple pattern became vigorous by the influence
both of the vibration of the meniscus and roll temperature. The
ripple pattern on the strip existed at the regular interval. The
ripple pattern of the aluminium coating on the roll surface
overlapped on the previous ripple pattern of the aluminium
coating with deviation at every rotation. The ripple pattern on the
strip was copied on the roll surface. However, the pattern on the
roll was not copied on the strip surface. The aluminium coating on
the roll surface did not hardly influence on the occurrence of the
ripple pattern on the strip surface. The crack was not existed on
the strip surface. The surface of the strip cast by the VHSTRC
was better than that cast by the UEDTRC.