Punch and method of construction

Details Punch and method of construction Punch and method of construction

1977-10-31

1978-11-14

Keenan, Michael J.

Metal deforming

By extruding through orifice

Indirect extrusion

72478, B21C 2506

Patent

active

041250079

ABSTRACT:
A punch for working material, such as an extrusion punch, wherein a hard wear resistant material is joined on one end to a rigid body, preferably a steel punch. The hard wear resistant material is joined on at the tip of the rigid body so as to prevent wear due to abrasion on the punch caused by the material being worked. The hard wear resistant end cap on the tip of the steel body is joined so that it may easily and quickly be replaced when the punch is in position on the machine thereby providing less down time for maintenance on the extrusion press. The method of joining the hard wear resistant end cap to the steel body minimizes the conditions which tend to fracture hard wear resistant material.

REFERENCES:
patent: 1471605 (1923-10-01), Hoff et al.
patent: 1989948 (1935-02-01), Singer
patent: 2388273 (1945-11-01), Lord
patent: 3893776 (1975-07-01), Beattie
"Designing with Kennametal"; Kennametal Inc., 1967; Chapter 4, pp. 22, 23.

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