Composite monolithic free abrasive grinding lap and a method of

Details Composite monolithic free abrasive grinding lap and a method of Composite monolithic free abrasive grinding lap and a method of

1990-12-04

1991-07-30

Group, Karl

Abrasive tool making process, material, or composition

Miscellaneous

51296, 51308, 51309, 264 28, B24D 308, B24D 316

Patent

active

050357255

ABSTRACT:
A composite yet monolithic, free abrasive grinding lap includes a sintered porous matrix of ceramic or metal material and a quantity of silicon, substantially completely filling the pores of the sintered porous matrix preform at least throughout an effective region of the lap that is to come in contact with a workpiece to be acted upon by the lap. The free abrasive grinding lap is made by first slip-casting a preform, then freezing and freeze-drying the same, followed by lightly sintering the dry preform into a porous matrix preform, bringing the temperature of the preform to above the melting point of silicon, and filling the pores with molten silicon.

REFERENCES:
patent: 4341725 (1982-07-01), Weaver et al.
patent: 4428895 (1984-01-01), Blasch et al.
patent: 4526734 (1985-07-01), Enomoto
patent: 4975225 (1990-12-01), Vivaldi et al.
patent: 4992220 (1991-02-01), Neri et al.

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