Reduction of friction during wire drawing
AssigneeGeorgia Tech Research Corporation
InventorsYea-Yang Su, Miroslav I. Marek, Ming Chien Hung
Life of this patent
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Abstract
A wire or rod drawing apparatus has a drawing die and a metallic tubular member through which the wire passes before entering the die. A D.C. voltage is applied between the rod and the tubular member for creating a voltage difference therebetween, and a lubricant is applied to the wire within the tubular member to function as an electrolyte.
Claims4
A method of reducing the friction and required pulling power in a metallic wire drawing apparatus wherein the wire is pulled through a reducing die and wherein the wire has an oxide film on the surface thereof, said method comprising the steps of:
- applying a voltage of a first polarity directly to the wire;
- deoxidizing the surface of the wire by passing the wire through an electrolytic bath contained in a metallic container having a voltage of opposite polarity to said first polarity applied thereto;
- pulling the deoxidized material through the reducing die;
- and
- determining the optimum voltage based upon the pulling force at the die.
Dependencies are inferred from the claim text.