Multi-layer anvil for ultra high pressure presses
AssigneeRogers Tool Works, Inc.
InventorsLan Carter, Madapusi K. Keshavan, Ghanshyam Rai, Jimmy W. Eason, Vonnie D. Hood
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Abstract
An anvil for use in ultra high pressure presses capable of operating in the pressure ranges where diamonds, polycrystalline diamond composites and cubic boron nitride are stable, fabricated by diffusion bonding together a plurality of cemented tungsten carbide layers. The anvil has a working layer adjacent to the highest pressure of the press with the remaining plurality of layers behind the working layer for support. The working layer has a higher hardness than the supporting layers and the supporting layers each have higher toughness than the working layer.
Claims19
An anvil comprising a plurality of cemented tungsten carbide layers diffusion bonded together for applying pressure in an ultra high pressure press capable of operating in the pressure ranges where diamonds, polycrystalline diamond composites and cubic boron nitride are stable.
An anvil having a tip section adjacent to a base section, used in a ultra high cubic press for making diamonds, polycrystalline diamond composites and cubic boron nitride, wherein the tip section comprises a working layer adjacent to the highest pressure of the press and a plurality of supporting layers behind the working layer said layers being truncated pyramidal cemented tungsten carbide layers diffusion bonded together, wherein the base section comprises a plurality of cylindrical cemented tungsten carbide layers, wherein the working layer has the highest hardness relative to all other layers, and wherein a layer located between the working layer and the base section has the lowest hardness but highest toughness.
An anvil comprising a working layer with a plurality of cemented tungsten carbide supporting layers wherein the working layer has the greatest hardness of all the layers, wherein an intermediate supporting layer has the lowest hardness to arrest any cracks initiated at the working layer, and wherein all other supporting layers have a hardness greater than the hardness of the intermediate supporting layer but lower than the hardness of the working layer, wherein the anvil is used in a press for making diamonds, polycrystalline diamond composites and cubic boron nitride.
Dependencies are inferred from the claim text.