Hardening of metals
OwnerEllsworth G. Munckinventor
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Abstract
Hardened metals are produced by subjecting molten metals to the action of an electrostatic field of at least 1000 volts during the cooling and solidification of the metal.
Claims18
The method of producing a hardened, normally solid metal which comprises subjecting said metal in a molten state to an electrostatic field produced by a potential difference of at least 1000 volts and maintaining said metal in said field while said metal cools and solidifies.
Apparatus for the hardening of a metal comprising a vessel for molten metal which vessel is electrically insulated from the ground, a generator for an electrostatic field relative to the ground, and an electrode connected to said generator, said electrode being located in or near said vessel.
A hardened aluminum having a microstructure comprising generally hexagonal, irregular grains measuring from about 30 to about 50 microns in width and from about 50 to about 70 microns in length.
Dependencies are inferred from the claim text.