Stretch-forming of long tubes

Details Stretch-forming of long tubes Stretch-forming of long tubes

1975-01-07

1976-04-20

Mehr, Milton S.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

72285, B21C 124

Patent

active

039509788

ABSTRACT:
Tubular blanks are stretch-formed by moving a mandrel into such a blank while holding a die which receives the blank and until mandrel and die are radially aligned. Subsequently, mandrel and die are moved axially to complete the drawing.

REFERENCES:
patent: 3572080 (1971-03-01), Alexoff
patent: 3654794 (1972-04-01), Brak et al.
patent: 3672200 (1972-06-01), Ogasawara
patent: 3672201 (1972-06-01), Hinshaw

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