Kabushiki Kaisha Kobe Seiko Sho

Katsuyuki Sadakane

Heijiro Kawakami

Kozo Katsube

Kohro Takatsuka

Yasuyuki Kanesada

Disclosed is a method of drawing a metal wire to a specified diameter using a continuous dry drawing apparatus including a plurality of die units disposed in series, each of the die unit being composed of a dry lubricant unit for applying a dry lubricant on the surface of a metal wire and a die provided on the downstream side of the dry lubricant unit, the method comprising an intermediate coating process of forming a coating film on the surface of the metal wire for enhancing the picking-up of a dry lubricant for subsequent die-drawing, in at least one of the spaces between adjacent die units. With this method, seizure of the die is prevented and the drawing speed is significantly enhanced.

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Kobe, Japan

Katsuyuki Sadakane