Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – Utilizing centrifugal force or rotating forming zone
Patent
1972-12-12
1983-11-15
Derrington, James H.
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
Utilizing centrifugal force or rotating forming zone
51309, 264 5, 264 9, 264332, B22D 2308
Patent
active
044155107
ABSTRACT:
Oxide refractory materials (for example, alumina-zirconia mixtures) can be cast to have an extremely fine crystal structure by casting them onto a non-reactive, non-melting particulate solid cooling media of a material other than that of the oxide refractory material (for example, steel spheres having a size ranging from about 5 to about 60 mm). By using steel spheres as the cooling media, the spheres can be removed from the solidified material with a magnet. The solidified material, when crushed and graded, has exceptional utility as an extremely tough abrasive grain.
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Derrington James H.
Green Raymond W.
Kennecott Corporation
Sahr R. Lawrence
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