Method for producing an article with a fluid passage

Details Method for producing an article with a fluid passage Method for producing an article with a fluid passage

1982-12-22

1986-03-11

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

164 46, 164132, 164 34, 427 34, 295275, B22D 2300, B22D 2900, B23P 1700, B22C 902

Patent

active

045744513

ABSTRACT:
A fluid-cooled article, such as a turbomachinery blading member, is provided with a fluid passage by a method of depositing a first material on a work surface of a mandrel by low pressure plasma deposition. A first member thus generated is separated from the mandrel. In one form, an inner surface of the first member is provided with a surface groove. After depositing a sacrificial material in the groove, a cover material is applied to entrap the sacrificial material. Removal of the sacrificial material provides the fluid passage.

REFERENCES:
patent: 3127641 (1964-04-01), Pertwee
patent: 3320345 (1967-05-01), Lirones
patent: 3397732 (1968-08-01), Howell, Jr.
patent: 3638299 (1972-02-01), Garner et al.
patent: 3707152 (1972-12-01), Arnold et al.
patent: 3839618 (1974-10-01), Muehlberger
patent: 3909921 (1975-10-01), Brooks
patent: 4066117 (1978-01-01), Clark et al.
patent: 4147201 (1979-04-01), Rabinovitch et al.
patent: 4370789 (1983-02-01), Schilke et al.
D. R. Mash and I. MacP. Brown, Structure and Properties of Plasma-Cast Materials, Feb., 1964.

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