Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-01-07
1995-06-27
Bradley, P. Austin
Metal founding
Process
Shaping liquid metal against a forming surface
164471, 1641551, 164479, 164453, 164423, 164437, B22D 1106, B22D 1110, B22D 1118
Patent
active
054271738
ABSTRACT:
An apparatus for melting and rapid solidification casting of metal alloys has a crucible for molding a metal charge. The crucible has side walls, a top and a bottom having an orifice therein. Collectively, the side walls, top and bottom define an interior of the crucible. A portion of the dimensions of the side walls of the side walls and bottom is divided by longitudinal slits into at least two segments. A nozzle is disposed partially within the crucible and extends through the orifice. The nozzle has a first end in communication with the interior of tune crucible. A second end of the nozzle has a nozzle orifice therein for defining a stream of molten metal alloy. A cooling mechanism cools the top, side walls and bottom of the crucible. The apparatus has mechanisms for inducing alternating electrical currents within the metal charge and within the nozzle, and for establishing and maintaining pressure within the interior of the crucible. A positioning mechanism positions the crucible and nozzle means relative to a quenching mechanisms that includes a rapidly moving chill substrate. The crucible, nozzle and quenching mechanism are housed within an enclosure that provides there within a controlled atmosphere having positive or negative pressure.
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S. H. Whang, "Rapidly Solidified Ti Alloys Containing Novel Additives", J. of Metals, Apr. 1984, pp. 34-40.
R. G. Rowe et al., "Titanium Alloy Melt Spinning", Proc. Structural Metals by Rapid Solidification, F. H. Froes & S. J. Savage ed., ASM Int. 1987, pp. 253-260.
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Bye Richard L.
Das Santosh K.
Loboysky Alexander
Allied-Signal Inc.
Bradley P. Austin
Criss Roger H.
Nuff Ernest D.
Puknys Erik R.
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