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US 2006/0054057 A1Published application
Filler component for investment casting slurries
OwnerRonald Doles, David Viersinventors
Life of this patent
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Abstract
A filler component for making an investment casting slurry, which comprises: a major portion of finely divided silica, aluminum silicate, alumina, zircon, or mixtures thereof; and a minor portion of one or more finely divided materials having particles in which, on average, at least one dimension of the particle is at least about four times greater than at least one other dimension of the particle. Typically, the particles are of generally plate-like or needle-like shape.
Claims43
A filler component for making an investment casting slurry, which comprises:
- a major portion which comprises at least one finely divided material selected from the group consisting of silica, aluminum silicate, alumina, and zircon, comprising particles having, on average, a generally similar extent in their three dimensions;
- and
- a minor portion of one or more finely divided materials comprising particles having plate-like, needle-like, or tubular structure, in a concentration sufficient to reduce drainage time of a slurry containing said filler component after application to an investment casting pattern, when compared with a similar slurry without said minor portion.
A filler component for making an investment casting slurry, which comprises:
- a major portion which comprises at least one finely divided material comprising particles selected from the group consisting of silica, aluminum silicate, alumina, and zircon, said particles having, on average, a generally similar extent in their three dimensions;
- and
- a minor portion of from 0.1 to 15 weight percent of one or more finely divided materials comprising particles in which, on average, at least one dimension of the particle is at least about four times greater than at least one other dimension of the particle.
Dependencies are inferred from the claim text.