Apparatus for drawing wire using a heated drawing die and coolin

Details Apparatus for drawing wire using a heated drawing die and coolin Apparatus for drawing wire using a heated drawing die and coolin

1997-06-09

1998-10-20

Crane, Daniel C.

Metal deforming

By pulling workpiece through closed periphery die

With heating or cooling

B21C 900

Patent

active

058230394

ABSTRACT:
A working method for wire drawing, applicable even to alloys such as Au--Sn and Au--Si which are fragile and which have their tensile strengths lowered rapidly when heated. A die and wire to-be-pulled are heated by a heating device so as to increase the ductility of the wire. On the other hand, finished wire having just been pulled out of the die is cooled by a cooling device so as to increase the tensile strength of the wire. Thus, the wire material can be easily worked owing to the increased ductility, while it can be prevented from breaking after the working, owing to the increased tensile strength based on the immediate cooling. Accordingly, the wire drawing works of the Au--Sn alloy etc. are permitted.

REFERENCES:
patent: Re20067 (1936-08-01), Busey
patent: 3774436 (1973-11-01), Tviksta
patent: 3946582 (1976-03-01), Pietroni
patent: 4036046 (1977-07-01), Davies
patent: 4464992 (1984-08-01), Pamplin
patent: 4644769 (1987-02-01), Pamplin
patent: 4739640 (1988-04-01), Hurst

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