Floating plug for drawing of tubes

Details Floating plug for drawing of tubes Floating plug for drawing of tubes

1998-04-22

1999-03-16

Crane, Daniel C.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

7237017, B21C 124

Patent

active

058815929

ABSTRACT:
A draw tool and process for producing internally finned copper tubing in which the draw tool has longitudinally extending exterior teeth and grooves having working surfaces that are shaped at interacting angles providing metal flow at tensile forces below the ultimate tensile strength of the tubing.

REFERENCES:
patent: 1318962 (1919-10-01), Brinkman
patent: 4373366 (1983-02-01), Tatsumi
patent: 4476704 (1984-10-01), Hage
patent: 4942751 (1990-07-01), Fuchs, Jr.
patent: 4947669 (1990-08-01), Fuchs, Jr.
patent: 5016460 (1991-05-01), England
patent: 5327756 (1994-07-01), Fox
patent: 5526663 (1996-06-01), Sauvonnet

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