Method for producing tungsten carbide grade powders suitable for

Details Method for producing tungsten carbide grade powders suitable for Method for producing tungsten carbide grade powders suitable for

1990-09-10

1991-04-16

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

419 14, 419 15, 419 17, 419 18, 419 36, 419 37, 419 68, 419 32, 419 33, B22F 100

Patent

active

050079573

ABSTRACT:
A method for producing metal carbide grade powders suitable for isostatic compaction which comprises combining a binder metal powder with an esterified wax and heating the wax to a temperature above the melting point of the wax to melt the wax and maintain it in the molten state to form a first mixture, with the amount of wax being sufficient to result in a level of wax in the subsequently produced second mixture of no greater than about 1/2% by weight, combining a metal carbide powder component with the first mixture while maintaining the wax in the molten state, forming a slurry of the second mixture and water, attritor milling the slurry at a temperature below the melting point of the wax, and removing water from the resulting attritor milled mixture to form the metal carbide grade powder.

REFERENCES:
patent: 4886638 (1989-12-01), Penkunas et al.
patent: 4902471 (1990-02-01), Penkunas et al.

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