Metal treatment – Compositions – Heat treating
Patent
1977-10-12
1979-12-04
Rutledge, L. Dewayne
Metal treatment
Compositions
Heat treating
148 115A, C22F 104
Patent
active
041770854
ABSTRACT:
An improved method of continuously manufacturing a hot-formed, heat treatable aluminum base alloy product comprising casting a molten aluminum base alloy metal, cooling a cast metal during casting at a rate at which solidification shrinkage will not occur, hot-forming cast metal to form a rod at a temperature above the temperature level at which the alloy metals will precipitate to the grain boundaries of the aluminum base metal, heating the rod to a solutionizing temperature after hot forming and subsequently reducing the metal temperature from the solutionizing temperature of the metal to a temperature at which no substantial immediate precipitation occurs within a time interval before which any substantial precipitation occurs.
REFERENCES:
patent: 3418177 (1968-12-01), Pryor
patent: 3613767 (1971-10-01), Cofer
patent: 3791876 (1974-02-01), Kroger
Chadwick Kenneth E.
Chia E. Henry
Powers Frank M.
Hanegan Herbert M.
Linne Robert S.
Rutledge L. Dewayne
Skiff Peter K.
Southwire Company
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