Process for the production of tri-metallic contact rivets

Details Process for the production of tri-metallic contact rivets Process for the production of tri-metallic contact rivets

1982-03-26

1988-05-17

Rowan, Kurt

Metal fusion bonding

Process

Using only pressure

228 31, 228 51, B23K 2100

Patent

active

047445025

ABSTRACT:
There is described an improved process for the production of tri-metallic contact rivets, in the course of which a cylindrical slug is formed with increased diameter under constant plastic deformation (upsetting) from three wire segments, and on this slug a head is then formed on one end by transformation.

REFERENCES:
patent: 2739369 (1956-03-01), Cooney
patent: 3311965 (1967-04-01), Gwyn, Jr.
patent: 3634934 (1972-01-01), Fitzgerald
patent: 4073425 (1978-02-01), Bollian
patent: 4232812 (1980-11-01), Shibata

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