C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/10
C22F 1/04 (2006.01) B21B 3/00 (2006.01) C22F 1/05 (2006.01)
Patent
CA 1133805
ABSTRACT OF THE DISCLOSURE An improved method of continuously manufacturing a hot formed heat treatable aluminum base alloy product having a substantially extended shelf life comprising casting a molten aluminum base alloy metal, cooling the cast metal during casting at a rate at which inverse segregation will be substantially minimized, raising the temperature of the cast metal prior to the initiation of the step of hot forming the cast metal to a temperature above the temperature level at which the alloy metals will substantially precipitate, 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 and controlling the solution heat treatment time and temperature such that said product has controlled precipitation during natural aging.
342603
Chadwick Kenneth E.
Chia Enrique H.
Powers Frank M.
Mitches & Co.
Southwire Company
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