Metal founding – Process – Including recycling of process material
Patent
1997-04-04
1998-09-08
Batten, Jr., J. Reed
Metal founding
Process
Including recycling of process material
164132, 164138, 164522, B22C 100, B22C 300, B22C 910, B22D 2900
Patent
active
058031510
ABSTRACT:
An improved soluble core for die casting metals or metal matrix composites is formed of a mixture of salt and up to about 20 weight % of ceramic material blended together to produce a homogeneous mixture and compacted under pressure to produce a soluble core having little or no porosity. The ceramic material can be in the form of fibers, particulates, whiskers, and/or platelets, and has a melting temperature greater than that of the salt. The core can include a thermally insulating outer ceramic coating to enable the core to withstand higher die casting temperatures than conventional salt cores. The improved soluble core is removable with hot water and/or steam and the core material can be reclaimed for reuse. The process is used to form hollow articles.
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Alyn Corporation
Batten, Jr. J. Reed
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