Wire drawing die and method of making the same

Details Wire drawing die and method of making the same Wire drawing die and method of making the same

1980-11-19

1982-12-28

Parker, Roscoe V.

Metal deforming

Tool and/or tool holder

Tool comprising closed periphery deforming passageway

76107A, B21C 302, B21K 520, B22F 704

Patent

active

043655025

ABSTRACT:
A wire drawing die and method for making the same in which a blank having a cylindrical core of a hard, wear-resistant material located randomly in the blank is initially attached to a circular metal plate having a concentric central opening, thus forming an assembly with the core being concentric to both the plate and the opening. A metal casing is provided having a cylindrical cavity proportioned to accommodate the plate with a close fit. A first brazing disc is placed on the cavity bottom. The assembly is inserted in the case cavity over the first brazing disc with the blank facing either toward the top or bottom of the cavity. Powder metal may be placed between the blank and the cavity. A second brazing disc is then placed over the assembly and the powder metal. A metal plug is provided with its outside diameter proportioned for a close fit with the case cavity and may have an interior cavity proportioned to accommodate the blank. The plug and casing are joined by the application of heat and pressure which melts the brazing material and partially melts and compacts the powder metal encapsulating the blank. Openings extending to the core through the plug and casing are provided. The core is drilled to communicate between the openings, the core being concentric to the outside diameter of the case.

REFERENCES:
patent: 2003475 (1935-06-01), Shipp
patent: 2171323 (1939-08-01), Wyland
patent: 2216652 (1940-10-01), Romp
patent: 2778250 (1957-01-01), Ploegsma
patent: 3978744 (1976-09-01), Zachman
patent: 4129052 (1978-12-01), Bieberich

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