Solid metal articles from built up splat particles

Details Solid metal articles from built up splat particles Solid metal articles from built up splat particles

1982-07-30

1985-05-07

Lovering, Richard D.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

419 5, 419 6, 419 23, 419 30, 419 31, 428547, B22F 306

Patent

active

045158649

ABSTRACT:
Apparatus for the production of a metal article comprises means for maintaining a reservoir of molten metal with a free surface, means for rotating the free surface of the reservoir about an axis such that the molten metal is atomized and thrown outwardly away from the said surface by centrifugal action, and a substrate in the path of the atomized particles of said molten metal, whereby a solid article may be built up on the substrate by solidifying the atomized particles thereon. The molten metal may be produced by melting an electrode or otherwise.
An annular solid metal article is disclosed having excellent mechanical properties. The solid metal article is produced in a single step by a spray deposition process. Molten metal is centrifugally atomized to splat and build up on a cooled mold surface disposed around the centrifuge means. Controlled relative reciprocatory movement in the direction of the rotational axis of the centrifuge is provided. By regulating this relative movement appropriately, the shape and width of the deposited article is determined. The process is carried out in an oxygen-free atmosphere. The product is a fully integrated solid, substantially free from voids, in which the original splat particle boundaries are almost undetectable, and grain growth occurs freely across the original particle boundaries.

REFERENCES:
patent: 2129702 (1938-09-01), Merle
patent: 2864137 (1958-12-01), Brennan
patent: 4173685 (1979-11-01), Weatherly

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