Process for the manufacture of wires with a brass surface, for t

Details Process for the manufacture of wires with a brass surface, for t Process for the manufacture of wires with a brass surface, for t

1996-12-09

1999-01-12

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148679, 148686, 148687, 148282, 427406, C21D 168

Patent

active

058581367

ABSTRACT:
Copper wire coated with a layer of zinc is heated to a temperature (T.sub.1) sufficient for the formation of a brass phase .beta., and the temperature is maintained until complete diffusion of the zinc. The thickness of the zinc covering can be chosen in such a way that once the zinc is completely diffused, the wire consists of a brass phase .beta. in its periphery and of copper in its central part. The wire is then heated to a temperature (T.sub.2) necessary for the formation of brass phase .alpha., and the central copper part of the wire is transformed into brass phase .alpha..

REFERENCES:
patent: 4924050 (1990-05-01), Hermanni
patent: 4935594 (1990-06-01), Groos et al.
patent: 4977303 (1990-12-01), Briffod
patent: 5196665 (1993-03-01), Briffod

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