Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1978-11-13
1981-09-08
Hunt, Brooks H.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75200, B22F 300, B22F 324
Patent
active
042882486
ABSTRACT:
In one embodiment, a compact for tools, such as cutting, drilling and shaping tools, consists essentially of self-bonded abrasive particles. The bonded particles define a substantially continuous interconnected network of pores, dispersed throughout the compact. The method for making such a compact comprises the steps of bonding a mass of abrasive particles, aided by a sintering aid material, under high temperatures and pressures (HP/HT) to form an abrasive body comprised of said particles in a self-bonded form and said material infiltrated throughout the body. The body is then treated to remove substantially all infiltrated material, thereby to produce a compact consisting essentially of the self-bonded abrasive particles. In another embodiment, a composite compact which is made in a similar manner to the first embodiment consists essentially of a layer of self-bonded abrasive particle and a substrate layer (preferably of cemented carbide) bonded to the abrasive particle layer.
REFERENCES:
patent: 3663191 (1972-05-01), Kroder
patent: 3745623 (1973-07-01), Wentorf et al.
Bovenkerk Harold P.
Gigl Paul D.
General Electric Company
Hunt Brooks H.
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