Method of heat treating steel wire

Details Method of heat treating steel wire Method of heat treating steel wire

C - Chemistry, Metallurgy

21

D

148/47

C21D 9/52 (2006.01)

Patent

CA 1203458

ABSTRACT Cold drawn carbon steel wire, more particularly stranded galvanized wire for use in overhead power transmission lines, is heat treated in the untensioned state for a period of at least one hour at a temperature in the range 150°C-200°C. The preferred temperature is about 175°C. The treated wire has a reduced susceptibility to permanent elongation under tensile stress. ACSR conductors incorpora- ting such wire as the steel reinforcement have a greatly reduced sag under heavy ice loading.

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