Apparatus for controlling molten metal flow in a tundish to enhance inclusion float out from a molten metal bath

The flow control apparatus of claim 17 wherein said upward angle .alpha. is between 0.degree. and 30.degree. and said outward angle .theta. is between 0.degree. and 60.degree..

Flow control apparatus for use with an impact pad in a continuous caster tundish containing a liquid steel bath comprising:

• a dam positioned downstream from said impact pad including;
• an upper portion and a lower portion opposite said upper portion, said upper portion having a leg projection outwardly from said dam toward said impact pad, said leg shaped to receive and redirect a flood of molten metal released from said impact pad, into at least one sub-flow current flowing in a downstream direction away from said impact pad and upward toward a slag cover floating on said liquid steel bath and into at least one sub-flow current flowing in an upstream direction toward said impact pad and upward toward said slag cover.

In a continuous caster tundish having improved flow control apparatus to enhance float out of inclusions entrained within a molten metal bath, the improved flow control apparatus comprising;

• a dam positioned downstream to receive a flood of molten metal released from an upstream impact pad, said dam having;
• a) an upper portion shaped to divide said flood of molten metal into multiple sub-flow currents, said upper portion redirecting at least one currents in an upward direction to flow below a slag cover to enhance inclusion float out from said molten metal bath to said slag cover, and
• b) at least one aperture extending through said dam at a compound angle including an upward angle .alpha. and an outward angle .theta..

In a continuous caster tundish having sidewalls and a floor to receive molten metal and improved flow control apparatus to enhance float out of inclusions entrained within the molten metal, the improved flow control apparatus comprising;

• a) a dam positioned downstream from an impact pad to receive a flood of molten metal released from said impact pad, said dam having an upper portion and a lower portion adjacent the floor of the tundish and opposite said upper portion, said upper portion having a leg projecting outwardly from said dam toward said impact pad, said leg shaped to divide the flood of molten metal into multiple sub-flow currents including,
• i) at least one sub-flow current directed downstream away from said impact pad and in an upward direction to flow below a slag cover to enhance inclusion float out from the molten metal to the slag cover, and
• ii) at least one sub-flow current directed upstream toward said impact pad and in an upward direction to flow below the slag cover to enhance inclusion float out from the molten metal to the slag cover.

Flow control apparatus for use in a continuous caster tundish containing a liquid steel bath comprising:

• a dam for receiving a flood of molten metal from an impact area of a tundish including;
• at least one aperture extending through said dam at a compound angle having an upward angle .alpha. and an outward angle .theta..

In a continuous caster tundish having an impact area upon which an incoming ladle stream impacts, improved flow control apparatus to enhance inclusion float out from molten metal contained in the tundish to a slag cover, the improved flow control apparatus comprising:

• a dam positioned downstream from an impact area, said dam including;
• a) at least one aperture extending through said dam at a compound angle including an upward angle .alpha. and an outward angle .theta..