Abstract: The present disclosure provides a method of mining rock using a disc cutter comprising a cutter body with a diameter d, a plurality of tool holders mounted about a peripheral surface of the cutter body and a plurality of cutting elements attached to the tool holders, the method comprising cutting a slot with a slot depth D in the rock at a cutting position of the disc cutter, wherein a rotational speed of the disc cutter during cutting is greater than 60 rpm.

Abstract: The present disclosure provides a pick tool comprising a holder body comprising a shank; a strike body attached to an end of the holder body opposing the shank; and a wear protection body comprising: an upper surface; a lower surface; and a throughhole extending from the upper surface to the lower surface through which the shank of the holder body is inserted; wherein a ratio of a diameter of the shank adjacent the throughhole of the wear protection body to the thickness of the wear protection body is less than 1.5, a processing assembly comprising a plurality of said pick tools, and a use of the processing assembly in mining or boring into the earth or processing pavement.

Abstract: There is disclosed a carbon material having a face-centered cubic crystal lattice characterized by a space group Fm-3m, and containing at least 99.9 atomic % carbon, wherein the mean grain size of the carbon material is greater than 0.5 ?m.

Abstract: This disclosure relates to a striking tool for use in a high velocity, high impact energy comminution mill. The tool comprises an elongate body attachable at a first end to the comminution mill, and further comprises a wear resistant element for improving the wear resistance of the striking tool. The wear resistant element comprises a plurality of individual units.

Abstract: A polycrystalline diamond construction has a body of polycrystalline diamond (PCD) material; and a cemented carbide substrate bonded to the body of polycrystalline material along an interface. The cemented carbide substrate has tungsten carbide particles bonded together by a binder material, the binder material comprising Co; and the tungsten carbide particles form at least around 70 weight percent and at most around 95 weight percent of the substrate. The cemented carbide substrate has a bulk volume, the bulk volume of the cemented carbide substrate having at least around 0.1 vol. % of inclusions of free carbon having a largest average size in any one or more dimensions of less than around 40 microns.

Abstract: A polycrystalline diamond construction has a body of polycrystalline diamond (PCD) material; and a cemented carbide substrate bonded to the body of polycrystalline material along an interface. The cemented carbide substrate includes tungsten carbide particles bonded together by a binder material, the binder material comprising an alloy of Co, Ni and Cr; and the tungsten carbide particles form at least around 70 weight percent and at most around 95 weight percent of the substrate. The cemented carbide substrate has a bulk volume, the bulk volume of the cemented carbide substrate has at least around 0.1 vol. % of inclusions of free carbon having a largest average size in any one or more dimensions of less than around 40 microns.

Abstract: This disclosure relates to a pick tool with a PCD impact tip. The impact tip is joined to a support body at a non-planar first interface. The non-planar first interface comprises two co-axial and annular interface surfaces of differing radial widths.

Abstract: Polycrystalline material comprising a plurality of nano-grains of a crystalline phase of an iron group element and a plurality of crystalline grains of material including carbon (C) or nitrogen (N); each nano-grain having a mean size less than 10 nanometres.

Abstract: This disclosure relates to a pick tool with a PCD impact tip. The impact tip is joined to a support body at a non-planar first interface. The non-planar first interface comprises two co-axial and annular interface surfaces of differing radial widths.

Abstract: This disclosure relates to a pick tool suitable for road milling. The pick tool comprises a central axis, an impact tip and a support body, and the impact tip is joined to the support body at a non-planar interface. The non-planar interface comprises two co-axial and annular interface surfaces.

Abstract: This disclosure relates to a percussive drill bit comprising PCD studs and a hard facing material that is strategically located to minimise stud pop outs and the amount of hard facing material used.

Abstract: This disclosure relates to a pick tool suitable for road milling. The pick tool comprises a central axis, an impact tip and a support body, and the impact tip is joined to the support body at a non-planar interface. The non-planar interface comprises two co-axial and annular interface surfaces.

Abstract: This disclosure relates to a method of producing a tool comprising a substrate and a hard-face coating metallurgically bonded to the substrate. The method comprises the steps of: providing a steel substrate; providing a composition of fully sintered granulate grains; and then applying the fully sintered granulate grains onto the substrate. The resultant cemented carbide material on the steel substrate comprises a specific composition and includes a metastable phase having a nanohardness of at least 12 GPa and a Palmqvist fracture toughness of below 7 MPa m½. The method includes heat-treating the hard-face coating to at least partially decompose the metastable phase, to increase the Palmqvist fracture toughness.