Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – Utilizing centrifugal force or rotating forming zone
Patent
1989-10-16
1992-02-18
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
Utilizing centrifugal force or rotating forming zone
425 8, B29B 910, B22F 904
Patent
active
050891820
ABSTRACT:
To develop a process for manufacturing cast tungsten carbide spheres, without any content of spattering material, as solid spheres with a bulk weight of 0.5-11.5 g/cm.sup.3 for cast tungsten carbide spheres from a screen fraction, and with a granular distribution of 40 .mu.m to 2,000 .mu.m, tungsten carbide is heated to about 150.degree.-300.degree. C. above the melting point, and then the cast tungsten carbide is smelted and granulated in stationary inert gas.
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Becker Wilfried
Findeisen Eberhard
Frank Klaus
Muller Fritz
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