Diamond rock tools for percussive and rotary crushing rock drilling
AssigneeSandvik AB
InventorsMats G. Waldenstrom, Udo K. R. Fischer, Lars H. Hillert, Mahlon D. Dennis
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Abstract
The present invention relates to a rock bit button of cemented carbide for percussive or rotary crushing rock drilling. The button is provided with one or more bodies of polycrystalline diamond in the surface produced at high pressure and high temperature in the diamond stable area. Each diamond body is completely surrounded by cemented carbide except the top surface.
Claims25
Cemented carbide rock bit button for percussive and rotary crushing rock drilling provided with at least one polycrystalline diamond body produced at high temperature and pressure, the diamond being compressively prestressed and being disposed within the cemented carbide button and surrounded by cemented carbide except for its top surface.
Dependencies are inferred from the claim text.