Method for vacuum loading
AssigneeCrucible Materials Corporation
InventorsTerry C. Rhodes, Henry E. Brinzer, Jr., Frank J. Rizzo
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Abstract
A method and apparatus for loading tool steel and high speed steel powder to a deformable mold for compacting is disclosed. The particles are exposed to a uniform vacuum during transfer from a sealed container through a sealed conduit and into a sealed deformable mold. By this method and apparatus, the particles are uniform throughout the container and substantially free of impurities, without requiring conventional outgassing.
Claims9
Apparatus for the powder metallurgy production of tool steel and high speed steel articles, said apparatus comprising a sealable container having a quantity of prealloyed particles therein, means for evacuating said container to provide a vacuum therein, a sealable, compressible mold, means for evacuating said mold to provide a vacuum therein, means for sealing said mold, and conduit means for transferring said prealloyed particles from said container to said mold while exposing said particles to a uniform level of vacuum during said transferring, with said sealable container, said means for evacuating and said sealable, compressible mold being interconnected, whereby said particles are protected from contamination prior to and during compacting and exhibit uniform cleanliness.
Dependencies are inferred from the claim text.