Continuous dry drawing method and apparatus therefor

Details Continuous dry drawing method and apparatus therefor Continuous dry drawing method and apparatus therefor

1994-11-23

1996-07-23

Larson, Lowell A.

Metal deforming

With cleaning, descaling, or lubrication of work or product

Lubricating

72 41, 72 46, B21B 4502, B21C 2324

Patent

active

055378498

ABSTRACT:
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.

REFERENCES:
patent: 377000 (1888-01-01), Withington
patent: 3961511 (1976-06-01), Wolfe
patent: 4464922 (1984-08-01), Pamplin et al.
patent: 4615195 (1986-10-01), Vogel et al.
patent: 5079939 (1992-01-01), Shook

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