Press for hydrostatic extrusion of tubes

Details Press for hydrostatic extrusion of tubes Press for hydrostatic extrusion of tubes

1975-05-22

1976-11-23

Mehr, Milton S.

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72264, B21C 2504

Patent

active

039929132

ABSTRACT:
A press for hydrostatic extrusion of tubes includes a die with an opening and a mandrel which together with the opening forms a gap in which a tubular billet is shaped into a tube. The mandrel is formed of a carrier with a bore therein and a tip which is attached in the bore and projects into the die opening. A plate is positioned between the inner end of the tip and the bottom of the bore and is made of a material with at least substantially the same E-modulus as the material of the carrier. The innermost end of the mandrel has an enlargement thereon forming a shoulder and the material of the character is compressed against the tip beneath the shoulder so as to prevent axial movement of the tip.

REFERENCES:
patent: 1285328 (1918-11-01), Neuberth
patent: 3178920 (1965-04-01), Buffet
patent: 3751958 (1973-08-01), Nilsson et al.

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