Method of producing a drawing die

Details Method of producing a drawing die Method of producing a drawing die

1980-06-19

1983-07-12

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Die

B23P 1524, B21C 302

Patent

active

043923976

ABSTRACT:
The disclosure relates to the manufacture of wire-drawing dies. The disclosure provides a method for securing a core in a metal housing. The method begins with the clamping of an annulus, consisting of a hardenable metal alloy, around a cylindrical core consisting of a material such as polycrystalline diamond or boron nitride. The core is clamped so as to produce a permanent, radially compressive stress therein. The core-annulus combination is secured in a metal housing of a conventional shape.

REFERENCES:
patent: 1904698 (1933-04-01), Simons
patent: 2256912 (1941-09-01), Welch
patent: 2364005 (1944-11-01), Simons
patent: 2866364 (1958-12-01), Bieberich
patent: 3831428 (1974-08-01), Wentorf, Jr.
patent: 4129052 (1978-12-01), Bieberich
patent: 4144739 (1979-03-01), Corbin

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