Method for the manufacture of multilayered contacts for medium-v

Details Method for the manufacture of multilayered contacts for medium-v Method for the manufacture of multilayered contacts for medium-v

1976-08-11

1978-01-10

Duzan, James R.

Metal founding

Process

Shaping liquid metal against a forming surface

291821, 29630C, 200264, 164 80, 164 98, 164 6, 428558, H01R 900, B22D 1900

Patent

active

040673790

ABSTRACT:
A method for producing multilayered contacts for medium-voltage vacuum power circuit breakers is provided comprising impregnating under vacuum with oxygen-free, liquid copper, a composite body of metal powders consisting of at least 35% by volume of a metal selected from the group consisting of chromium and vanadium and at least one metal selected from the group consisting of chromium, vanadium, cobalt, nickel and iron, in a crucible comprised of a metal selected from the group consisting of iron, steel, and chromium-nickel steel; and removing at least part of the crucible to expose a contact surface.

REFERENCES:
patent: 3592987 (1971-07-01), Lempert
patent: 3828428 (1974-08-01), Wayland
patent: 3985512 (1976-10-01), Hassler et al.

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