Metal founding – Means to shape metallic material – Continuous or semicontinuous casting
Patent
1988-09-20
1990-04-17
Lin, Kuang Y.
Metal founding
Means to shape metallic material
Continuous or semicontinuous casting
164 46, 164479, B22D 2300
Patent
active
049171704
ABSTRACT:
A molten metal gas-atomizing spray-depositing apparatus has an atomizer which employs a pressurized gas flow for atomizing a stream of molten metal into a spray pattern of semi-solid metal particles. The apparatus also has a movable non-preheated substrate composed of a material having a predetermined thermal conductivity of about one or less (W/M-K) being disposed below the atomizeer. The substrate receives thereon a deposit of the particles in the spray pattern. The pressurized gas flow also impinges thereon for cooling the deposit on the substrate to form a product thereon. The predetermined thermal conductivity of the substrate of one or less precludes extraction of heat by the substrate from, and thus solidification of, the deposit upon initial contact with the substrate whereby a reduction of porosity is achieved in the deposit.
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Cheskis Harvey P.
Sankaranarayanan Ashok
Watson W. Gary
Kieser H. Samuel
Lin Kuang Y.
Olin Corporation
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