Abrasive tool making process – material – or composition – With inorganic material
Patent
1974-10-18
1976-09-28
Arnold, Donald J.
Abrasive tool making process, material, or composition
With inorganic material
51308, 51309R, 51309A, B24D 306, B24D 314, C04B 3116
Patent
active
039829111
ABSTRACT:
Cubic boron nitride (CBN) crystals of graded particle size are chemically cleaned and disposed in a protective metal cup together with a mass of substrate source material and a concentration of metal for providing an alloy for infusing and wetting the walls of capillary-size voids. The CBN content is increased in density to greater than 70% by volume and placed within a semi-isostatic system of finely-divided powder. Pressure in the range of from about 20,000 to about 100,000 psi is applied semi-isostatically to the system and thereby to the metal cup and its contents. Heat and pressure are then simultaneously applied to the semi-isostatic system. Liquefied infusing and wetting alloy enters the interstices between the CBN crystals to bond them together. The entire system is cooled and the strong composite body of metal-bonded CBN directly bonded to a substrate is recovered therefrom.
REFERENCES:
patent: 3407445 (1968-10-01), Strong
patent: 3469976 (1969-09-01), Iler
patent: 3743489 (1973-07-01), Wentorf et al.
patent: 3767371 (1973-10-01), Wentorf et al.
patent: 3850591 (1974-11-01), Wentorf et al.
Arnold Donald J.
Binkowski Jane M.
Cohen Joseph T.
General Electric Company
Squillaro Jerome C.
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