Dispensing – Molten metal dispensing – Flow controllers or assists
Reexamination Certificate
2006-02-14
2006-02-14
Kastler, Scott (Department: 1742)
Dispensing
Molten metal dispensing
Flow controllers or assists
C266S275000, C266S236000
Reexamination Certificate
active
06997361
ABSTRACT:
A tundish impact pad formed from refractory material comprising a base having an impact surface which, in use, faces upwardly against a stream of molten metal entering a tundish, a wall extending upwardly from the base around at least a part of the periphery of the impact surface, one or more portions of the upper part of the wall supporting one or more overhangs which project inwardly over the periphery of the base. At least one of said overhangs has at least a part whose under-surface curves or slopes, the curvature or slope lying in a direction along the length of the wall. Preferably the pad has rectangular base and a pair of opposite walls is provided with an overhang that arches upwardly towards the centre of the wall. An overhang on the second pair of walls can be, for example, planar and parallel to the base. The width of the curved or sloping overhangs increases in both directions away from its centre/top.
REFERENCES:
patent: 5518153 (1996-05-01), Zacharias et al.
patent: 6024260 (2000-02-01), Zacharias et al.
patent: 2002/0033567 (2002-03-01), Morales et al.
patent: WO 00/74879 (2000-12-01), None
Morris John
Wotsch Eric
Zacharias Donald Richard
Foseco International Limited
Kastler Scott
Nixon & Vanderhye, PCC.
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