Low melting temperature metal coating process, apparatus and product
AssigneeSt. Joe Minerals Corporation
InventorsNorman Laurence Lunn, Charles Jeffrey McCrea, Raymond David Pregaman, Lawrence Edward Turowski
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Abstract
Substrate such as relatively porous, low thermally conductive materials are coated with molten lead, lead-base alloys, zinc, zinc-base alloys, tin, tin-base alloys, cadmium, cadmium-base alloys, aluminum, aluminum-base alloys and the like by spreading the molten metal by means of a low thermally conductive roll to provide products useful in sound attenuation, moisture and corrosion proofing and radiation shielding.
Claims6
A method of mechanically bonding to a non-metallic porous substrate a metal selected from the group consisting of lead or lead-base alloys, zinc or zinc-base alloys, tin or tin-base alloys, cadmium or cadmium-base alloys, and aluminum or aluminum-base alloys, comprising heating said selected metal to its molten state;
- supporting a non-metallic porous substrate on a heat sink;
- while supported dispensing in a continuous rectilinear pattern a stream of the molten metal on the supported non-metallic porous substrate to be coated;
- continuously pressing the dispensed metal while still molten into the substrate and causing said dispensed metal to solidify immediately following the pressing step.
Apparatus for mechanically bonding to a non-metallic porous substrate comprising means for heating a low temperature metal to its molten state;
- heat sink means for supporting the non-metallic substrate;
- means for dispensing in a continuous rectilinear pattern a stream of the molten metal on said substrate while supported;
- and means for continuously pressing the dispensed metal while still molten into the substrate and means maintaining the substrate at a temperature such that the dispensed metal immediately solidifies after it is pressed into the substrate.
Dependencies are inferred from the claim text.