The effect of drawing temperature on the properties and annealing response of copper wire

The effect of drawing temperature on the properties and annealing response of copper wire

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Heat is generated in the “cold” drawing of copper wire, and drawing temperatures in the 200-300°C range are plausible. Experimental isothermal drawing passes in the 20-250°C range have been characterized regarding as-drawn mechanical properties, friction and annealing response, and related aspects of texture and surface quality. These isothermal results are compared with observations on the characteristics of wire drawn at commercial speeds with theoretically projected radial thermal gradients. The role of temperature in commercial copper wiredrawing is reassessed in light of this new and rigorous laboratory data.

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Description

Heat is generated in the “cold” drawing of copper wire, and drawing temperatures in the 200-300°C range are plausible. Experimental isothermal drawing passes in the 20-250°C range have been characterized regarding as-drawn mechanical properties, friction and annealing response, and related aspects of texture and surface quality. These isothermal results are compared with observations on the characteristics of wire drawn at commercial speeds with theoretically projected radial thermal gradients. The role of temperature in commercial copper wiredrawing is reassessed in light of this new and rigorous laboratory data.

Additional information

Author(s)

Corrado Noseda and Roger N. Wright, Rensselaer Polytechnic Institute, USA
Publication/Event/Pages

Paper presented at WAI 71st Annual Convention, Atlanta, GA USA. Paper published in Wire Journal International, January 2002, pg. 74.
Year

2001

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