Metal treatment – Stock – Copper base
Patent
1997-06-30
2000-06-20
Ip, Sikyin
Metal treatment
Stock
Copper base
C22C 900
Patent
active
060773642
ABSTRACT:
Copper trolley wire consisting essentially of at least 99.90% copper and at most 0.10% of a metal selected from the group consisting of silver, cadmium, tellurium, titanium, magnesium, manganese, chromium, zirconium, tin and combinations thereof, has a minimum tensile strength well exceeding that listed in ASTM Standard B47-95a for copper trolley wire. The copper trolley wire has a uniform fine grain size. The copper trolley wire is manufactured using a process of casting a copper rod of the appropriate composition, hot working or "conforming" the cast rod to reduce its diameter, and then cold working it to form the desired wire by drawing it through one or more dies. Preferably, no annealing step is used.
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"Standard Specification for Copper Trolley Wire--Designation: B47-95a", ASTM Committee on Standards, American Society for Testing and Materials, West Consohocken, PA, 1995.
"How Tough Do You Need It?", Copper Rod Bulletin, Southwire Company, Carrollton, GA, 1996.
Chandler Thomas J.
Corrado John
Ingerman Jeffery H.
Ip Sikyin
Phelps Dodge Industries, Inc.
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