Impact pad, tundish and apparatus including the impact pad, and method of using same
AssigneeArceloMittal Investigacion y Desarrollo, S.L.
InventorTathagata Bhattacharya
Life of this patent
Estimating the term…
Abstract
A tundish impact pad, a tundish containing the same, and a method of using and assembly containing the impact pad and tundish are provided. The tundish impact pad features a base having a base surface with a conical impact surface area establishing an apex, a sidewall, and a top wall extending inwardly relative to the sidewall to terminate at an inner edge establishing a mouth opening spaced above and centered relative to the apex. The top wall includes a lip sloping radially inwardly and downwardly towards the conical impact surface.
Claims17
A tundish impact pad, comprising:
- a base having a base surface, the base surface comprising a conical impact surface area establishing an apex;
- a sidewall;
- and
- a top wall extending inwardly relative to the sidewall to terminate at an inner edge establishing a mouth opening spaced above and centered relative to the apex, the top wall comprising a lip sloping radially inwardly and downwardly towards the conical impact surface protuberances distributed about a lower surface area of the lip.
An apparatus comprising:
- a continuous caster tundish for containing a reservoir of molten metal having fluid flow generated by an incoming ladle stream;
- and
- a tundish impact pad within the continuous caster tundish, the tundish impact pad, comprising
- a base having a base surface, the base surface comprising a conical impact surface area establishing an apex;
- a sidewall;
- and
- a top wall extending inwardly relative to the sidewall to terminate at an inner edge establishing a mouth opening spaced above and centered relative to the apex and positioned to receive the incoming ladle stream, the top wall comprising a lip sloping radially inwardly and downwardly towards the conical impact surface protuberances distributed about a lower surface area of the lip.
A strand casting method, comprising:
- feeding an incoming ladle stream of molten liquid steel into a continuous caster tundish, the continuous caster tundish containing a tundish impact pad comprising
- a base having a base surface, the base surface comprising a conical impact surface area establishing an apex;
- a sidewall;
- and
- a top wall extending inwardly relative to the sidewall to terminate at an inner edge establishing a mouth opening spaced above and centered relative to the apex and positioned to receive the incoming ladle stream, the top wall comprising a lip sloping radially inwardly and downwardly towards the conical impact surface protuberances distributed about a lower surface area of the lip;
- impacting the incoming ladle stream of molten liquid steel against the conical impact surface area;
- and
- allowing the impacted molten liquid steel to discharge from the tundish impact pad through the mouth opening.
Dependencies are inferred from the claim text.