Diamond impregnated cutting structures, earth-boring drill bits and other tools including diamond impregnated cutting structures, and related methods
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United States of America Patent
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Feb 14, 2017
Grant Date -
Apr 5, 2012
app pub date -
Oct 5, 2011
filing date -
Oct 5, 2010
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Abstract
An earth-boring tool includes a bit body, a plurality of first cutting elements, and a plurality of second cutting elements. Each of the first cutting elements includes a discontinuous phase dispersed within a continuous matrix phase. The discontinuous phase includes a plurality of particles of superabrasive material. Each of the second cutting elements includes a polycrystalline diamond compact or tungsten carbide. A method of forming an earth-boring tool includes disposing a plurality of first cutting elements on a bit body and disposing a second plurality of second cutting elements on the bit body. Another method of foaming an earth-boring tool includes forming a body having a plurality of first cutting elements and a plurality of cutting element pockets and securing each of a plurality of second cutting elements within each of the cutting element pockets.
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