Metal treatment – Compositions – Heat treating
Patent
1978-05-26
1979-07-17
Stallard, W.
Metal treatment
Compositions
Heat treating
C22F 104
Patent
active
041614160
ABSTRACT:
Aluminum 6201 alloy wire is produced by drawing solution-heat-treated rod down to wire of desired diameter, for winding onto spools, under conditions that deliver the wire to the spool at an elevated temperature within a specific range predetermined for wire of such diameter, immediately placing each spool in a medium that passively retards the temperature decay rate of the wire to a value of about 50.degree. to about 75.degree. F. per hour, and maintaining the spool in the medium for a period of up to about four hours, to effect artificial aging without use of an oven or furnace, and thereby to achieve an artificially aged product, e.g. a product having a wire conductivity of at least about 52.5% IACS and mechanical properties of T-81 temper.
REFERENCES:
patent: 3464866 (1969-09-01), Pryor
patent: 3843418 (1974-10-01), Oida et al.
patent: 3849210 (1974-11-01), Kunsman
patent: 4065326 (1977-12-01), Nicoud
Alcan Aluminum Corporation
Stallard W.
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