Process for the heat treatment of coils of metallic strip, prefe

Details Process for the heat treatment of coils of metallic strip, prefe Process for the heat treatment of coils of metallic strip, prefe

1977-04-19

1978-11-07

Dean, R.

Metal treatment

Compositions

Heat treating

148150, 148154, 148155, 219162, C22F 104

Patent

active

041244168

ABSTRACT:
A process for the heat treatment of coils of aluminum and aluminum alloys in which lubricants applied to the surfaces of the metal strip, the usual oxide layer and a spacing between turns formed during coiling permit the application of a voltage across the coil between the ends of the strip of 0.01 to 0.25 volts per turn and a current intensity of 1,000 to 10,000 amperes, preferably 5,000 amperes, to heat the coil to 750.degree. C. The coil is thereupon cooled.

REFERENCES:
patent: 3294598 (1966-12-01), Norris
patent: 3746582 (1973-07-01), Gentry

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