摘要:
A pick assembly comprising a holder body, a strike body, a base body attachable to a drive mechanism, and an interference assembly comprising at least one interference member. The holder body comprises a head portion and a shaft depending from the head portion. The strike body comprises a super-hard strike tip. The head portion and the strike body are cooperatively configured such that the strike body can be attached to the head portion, the strike tip being exposed for striking a body to be degraded when in use. The base body comprises a base bore. The base bore, shaft and interference assembly are cooperatively configured such that the shaft can be secured within the base bore, the interference member disposed between the shaft and the bore. Frictional interference between the shaft, interference assembly and base bore is sufficient to prevent rotation of the shaft within the base bore in use.
摘要:
The present disclosure relates to a brazed superabrasive assemblies and method of producing brazed superabrasive assemblies. The brazed superabrasive assemblies may include a plurality of braze alloy layers that are positioned opposite a stress relieving layer. The stress relieving layer may have a solidus temperature that is greater than a solidus temperature of the plurality of braze alloy layers.
摘要:
A tool (100) and a method of making the tool is disclosed. The tool comprises a sleeve (102) and a compact (104). The sleeve may have a proximal end (112), a distal end (106), a central axis (120), and a bore (140) extending from the proximal end to the distal end, the bore having an inner wall (210). The compact may have a base end (110) and an impact surface (116) spaced opposite to the base end. The compact may be substantially disposed within the bore of the sleeve. The proximal end may be disposed proximate the base end of the compact.
摘要:
A tool and a method of making the tool is disclosed. The tool comprises a sleeve and a compact. The sleeve may have a proximal end, a distal end, a central axis, and a bore extending from the proximal end to the distal end, the bore having an inner wall. The compact may have a base end and an impact surface spaced opposite to the base end. The compact may be substantially disposed within the bore of the sleeve. The proximal end may be disposed proximate the base end of the compact.
摘要:
A rock bit tip (120) comprising a mounting portion (122), an end portion (11) converging from a top end of the mounting portion to form a work surface and at least one recess (125) in a bottom (124) of the mounting portion, the recess extending towards said end portion, wherein there are more than one recess. The invention further relates to a rock bit.
摘要:
A pick tool assembly comprising a working tip, a base and at least one wear protector element. The working tip is attached to the base and the base comprises an attachment member for coupling the base to a driving mechanism. The working tip comprises super-hard material, the base comprises a first material and the wear protector element comprises a second material having greater abrasive wear resistance than the first material. The base and wear protector element are cooperatively configured so that wear protector element is mechanically securable to the base.
摘要:
A strike tip for a pick tool, comprising a strike structure joined to a substrate at an interface boundary, the strike structure comprising super-hard material and the substrate comprising carbide material. The strike structure has a strike end opposite the interface boundary, the strike end including a rounded apex having a radius of curvature in a longitudinal plane of at least 3.2mm and at most 6mm.
摘要:
A tip for a degradation tool, the tip comprising a PCD structure (20) joined to a cemented carbide substrate (30); the PCD structure comprising a plurality of strata (24, 25) arranged so that adjacent strata have alternating compressive and tensile stress states, adjacent strata comprising different PCD grades and being directly bonded to each other by inter-growth of diamond grains; each stratum having a mean thickness of at most 500 microns; the PCD structure defining a working end including a rounded conical apex (22) having a radius of curvature of 1.3 mm to 4 mm.
摘要:
A tool component comprising a wear part covered at least in part by a connection member, the wear part having a specified hardness and the connection member being a metal or alloy, and the wear part comprising a surface that includes one or more depressions or projections therefrom, and the connection member having been pressed against that surface so that at least the surface of the connection member that faces the wear part surface follows the profile of the wear part, whereby relative movement between the wear part and connection member is substantially prevented. The metal or alloy connection member may be readily attached to a tool body for example by brazing of the like. The wear part may comprise a material that is not readily brazeable, for example a ceramic material or a cermet or a superhard material or a composite of such materials.