Abstract

This disclosure relates to a disk cutter (100) for a cutting assembly of a rock excavation machine. The disk cutter comprising a cutter body (102) including at least one light-weighting aperture (110).

IPC Classes  ?

• E21C 25/16 - Machines slitting solely by one or more rotating saws, cutting discs, or wheels
• B28D 1/12 - Saw blades specially adapted for working stone
• E02F 3/24 - Digging wheels; Digging elements of wheels; Drives for wheels
• E02F 5/08 - Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
• E21C 25/18 - Saws; Discs; Wheels
• E21C 35/183 - Mining picks; Holders therefor with inserts or layers of wear-resisting material

Abstract

The present application relates to a friction stir welding tool insert. The tool insert comprises a stirring pin and a shoulder. The tool insert comprises a polycrystalline cubic boron nitride, PCBN, composite material with a textured surface layer on the stirring pin and/or on the shoulder. The textured surface layer comprises a pre-defined repeating pattern. The textured surface layer provides enhanced mechanical coupling between the tool insert and a workpiece.

IPC Classes  ?

• B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
• B23K 20/22 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded

Abstract

This disclosure relates to a disk cutter (18) comprising a cutter body, a plurality of tool holders (24) and a plurality of cutting elements (22) mounted to the tool holders. The tool holders and cutting elements are provided in at least one set about the cutter body, each set comprising two or more tool holders and two or more cutting elements arranged in a p re-determined sequence of configurations.

IPC Classes  ?

• E21C 25/18 - Saws; Discs; Wheels
• E02F 3/24 - Digging wheels; Digging elements of wheels; Drives for wheels
• E02F 5/08 - Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis

Abstract

This disclosure relates a polycrystalline cubic boron nitride, PCBN, composite material for use in friction stir welding. The PCBN composite material comprises tungsten (W), rhenium (Re) and aluminium (Al) in the binder matrix material.

IPC Classes  ?

• C30B 29/38 - Nitrides
• B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
• C30B 1/12 - Single-crystal growth directly from the solid state by pressure treatment during the growth

Abstract

A cutter element for an earth-boring tool, comprising a polycrystalline diamond (PCD) volume joined at an interface boundary to a cemented carbide substrate. The PCD volume includes a rake face opposite the interface boundary, an edge of the rake face being suitable as a cutting edge of the cutter element. The PCD volume comprises a plurality of strata directly joined to each other at inter-strata boundaries, in which each of a first plurality of the strata comprises PCD material having a first diamond content; each of a second plurality of the strata comprises PCD material having a second diamond content; the second diamond content being greater than the first diamond content; and the strata of the first and second pluralities disposed in an alternating arrangement with respect to each other. The strata are configured and arranged such that a radial line through the edge and a centroid of the interface boundary intersects, within 1,000 microns from the edge, each of the inter-strata boundaries, and the respective tangent plane to each inter-strata boundary at the respective intersection is disposed relative to the radial line at no less than a minimum angle of 30°.

IPC Classes  ?

• E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts

Abstract

This disclosure relates to a cutting assembly for mining or extraction. The cutting assembly comprises a circular disk cutter (18). Cutting elements are arranged around a circumferential surface of the disk cutter, each seated in a tool holder (24). The orientation of the seat is such that the cutting element (22) points tangentially in or towards the intended direction of rotation.

IPC Classes  ?

• E21C 25/18 - Saws; Discs; Wheels
• E21C 35/18 - Mining picks; Holders therefor

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.

IPC Classes  ?

• B02C 13/16 - Disintegrating by mills having rotary beater elements with vertical rotor shaft, e.g. combined with sifting devices with beaters hinged to the rotor
• B02C 13/28 - Shape or construction of beater elements