Method of machining of polycrystalline diamond
AssigneeCamco International (UK) Limited
InventorsNigel Dennis Griffin, Peter Raymond Hughes
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Abstract
A method of machining a polycrystalline diamond material including a matrix of interstices containing a catalyzing material and a volume close to a working surface thereof substantially free of catalyzing material which comprises the steps of treating the volume to render the polycrystalline diamond electrically conductive, and using an electron discharge machining technique to machine the polycrystalline diamond. In one embodiment, the treatment comprises applying a conductive material layer to a surface of the diamond.
Claims9
A method for machining a polycrystalline diamond component, the polycrystalline diamond component including a matrix of interstices and wherein a first volume of the component adjacent to a working surface thereof is substantially free of catalyzing material, and a second volume of the component remote from the working surface contains the catalyzing material, comprising the steps of rendering the volume which is substantially free of catalyzing material electrically conductive, and using an electron discharge machining technique to machine the polycrystalline diamond.
Dependencies are inferred from the claim text.