9th ECCC European Continuous Casting Conference – ECCC 2017

The paper shows the results of the research obtained by industrial experiments with use of different dams in the tundish. The number and distribution of the inclusions for different positions of ultra-low carbon steel slabs were also analysed by Aspex. The industrial experimental results showed that: the average inclusions at dam without hole and with hole in the tundish are distributed 31.66/cm2 and 167.70/cm2. The size of inclusions with 10-15μm, 15-20μm, 20-50μm and >50μm at dam without hole in slabs are distributed 25.82/cm2, 4.65/cm2,2.44/cm2, 0.11/cm2; the size of inclusions with 10-15μm, 15-20μm, 20-50μm and >50μm at dam with hole are distributed 37.92/cm2, 7.97/cm2, 3.66/cm2, 0.32/cm2. The number density of inclusions in the dam without hole zone was markedly less than that in other dam with hole zone. Keywords：Two-Strand Tundish; dam; non-metallic inclusions; continuous casting