RESEARCH INTO THE MOVEMENT AND REMOVAL OF INCLUSIONS IN GAS-STIRRED STEEL MELTS

The cleanness of steel melts is co-influenced appreciably by the flow conditions in the molten metal and by the movement of inclusions suspe nded in it. These conditions have not yet been adequately clarified co ncerning a further improvement of molten metal cleanness. Research was therefore conducted into the dynamic behaviour of the multi-phase sys tem of molten metal/gas bubbles/inclusions in gas-stirred ladies. It w as possible to make new findings in this respect in operational trials , model investigations and numerically based mathematical simulations. Information is given regarding the use of the findings in production, with a view to optimising the secondary metallurgy processes of mixin g and cleanness stirring.