Method for producing metal wire
AssigneeBridgestone Corporation
InventorTakayuki Saito
Life of this patent
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Abstract
Provided is a method for producing a metal wire with improved productivity in which a conventional drawing machine is used while wear of a die or occurrence of a break due to the ductility loss thereof is effectively prevented. Provided is a method for producing a metal wire 1 including a process of drawing a metal wire by using a slip type drawing machine. For a cone 11 of the slip type drawing machine, a cone having an even surface without an inclination angle with respect to the axis of rotation is used, as well as, a die 12 of the slip type drawing machine is positioned such that the metal wire 1 passes a location nearest to a drive unit in the direction parallel to the axis of rotation of the cone 11.
Claims1
A slip type drawing machine in which a pair of opposing cones across a die are provided and a metal wire is drawn between the cones, wherein
- each cone has an even surface without an inclination angle with respect to an axis of rotation, and the die is positioned such that the metal wire passes a location nearest to a drive unit in a direction parallel to the axis of rotation of each cone,
- wherein a space of 2 to 5 mm is provided between the die and a holder which holds the die in a plane orthogonal to a running direction of the metal wire and in a radial direction of each cone.
Dependencies are inferred from the claim text.