According to an object of study on mould for continuous casting 950 kg/min H-beam bloom

with using established three dimensional geometry models by FLUENT software the casting speed (0.6-1.2 m/s) with nozzle submerged depth 125 mm and 175 mm on transferring characteristics of liquid steel in mould has been simulated and studied. Results show that with different casting speed the patterns of liquid steel flow in mould for H-beam bloom are similar

but with increasing casting speed the jet impacting depth of liquid steel and the flow velocity of liquid at free surface in mould increase

the melting status of mould powder is tending to improvement

and the fluctuation of liquid free surface in mould and the impact effect of liquid flow on solidified shell are tending to increase. While with increasing casting speed

removal ratio of inclusions with different sizes from liquid all decreases

among them the removal ratio of large-sized inclusions decreases markedly

as the casting speed increases from 0.6 m/min to 1.2 m/min the removal ratio of 100 μm inclusions decreases from 16% to 10%

and in simulating condition the removal ratios of 20-100 μm inclusions are 4% to 16%.