Diffusion article
AssigneeHarbisonWalker International, Inc.
InventorMark Smith
Life of this patent
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Abstract
A diffusion component for impregnating molten steel with a gas includes a barrier having a first side and a second side, a through-hole formed within the barrier, the through-hole connecting the first side to the second side, and a porous element arranged within the through-hole such that the flow of molten steel passes over the porous element. At least one flow disrupter is arranged relative to the porous element and configured to promote non-laminar flow of molten steel passing through the through-hole.
Claims10
A method for removing non-metallic inclusions from molten steel within a tundish, the tundish including a barrier that divides a tundish volume into a steel receiving volume and a steel dispensing volume, the method comprising:
- directing the molten steel through at least one tunnel formed in the barrier wherein an outlet of the at least one tunnel is flared;
- emitting a wall of gas bubbles along an entire width of the at least one tunnel, whereby non-metallic inclusions within the molten steel attach to the gas bubbles and are carried to a surface region of the molten steel;
- and
- creating non-laminar flow of the molten steel as the molten steel flows through the at least one tunnel, whereby the non-laminar flow causes intermixing of the gas with the molten steel.
Dependencies are inferred from the claim text.