Metal bonded abrasive tools

Details Metal bonded abrasive tools Metal bonded abrasive tools

1978-01-09

1979-03-06

Arnold, Donald J.

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51307, B24D 306

Patent

active

041428722

ABSTRACT:
A metal bonded abrasive body comprising diamond or cubic boron nitride abrasive particles held in a metal bonding matrix, the metal bonding matrix consisting of cobalt, present in an amount of at least 50 percent by weight of the matrix, and boron in the form of cobalt borides substantially uniformly distributed through the matrix. The invention also provides for a method of producing such bodies which includes mixing cobalt or a cobalt alloy, in powder form, with diamond or cubic boron nitride particles and sintering the mixture to produce the body and is characterized in that the cobalt or alloy powder is mixed with a boriding powder and sintered at a temperature of 800.degree. C. to 1000.degree. C. to boride the cobalt, the boriding taking place before or during the body-forming sintering step.

REFERENCES:
patent: 2476699 (1949-07-01), Cline
patent: 3136615 (1964-06-01), Bovenkerk et al.
patent: 3515524 (1970-06-01), Grambal
patent: 3819814 (1974-06-01), Pope
patent: 3868234 (1975-02-01), Fontanella
patent: 3999952 (1976-12-01), Kondo et al.
patent: 4000980 (1977-01-01), Morishita et al.
patent: 4024675 (1977-05-01), Naidick

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