Drawing technique

Details Drawing technique Drawing technique

1978-02-21

1979-04-10

Keenan, Michael J.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

72479, B21C 316

Patent

active

041482077

ABSTRACT:
A method and apparatus for improving the interior or exterior surface smoothness of a tube shell during cold draw operations is disclosed wherein the final reduction of the tube shell is completed within the die land.

REFERENCES:
patent: 2183861 (1939-12-01), Cotter, Sr.
patent: 2228301 (1941-01-01), Ditzel et al.
patent: 2408325 (1946-09-01), Luce et al.
patent: 3167176 (1965-01-01), Hill et al.

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