Element Six Gmbh

Element Six Abrasives S.a.

Element Six (production) (pty) Ltd.

Element Sux Abrasives S.a.

Element Six Abrasives Holdings Limited

John James Barry

Maweja Kasonde

Cornelis Roelof Jonker

Robert Fries

Dermot Francis O'Malley

Roger William Nigel Nilen

Timothy Peter Mollart

Stig Ake Andersin

Bo Christer Olofsson

Terry Scanlon

James Doyle

Leshope Joseph Choenyane

Erens Tshepo Radebe

Stig ÅKe Andersin

A method of making a cutter structure () comprises placing a pre-formed body () of hard material having a surface topography in a canister, placing an aggregated mass of grains of superhard material () over said surface topography, placing a punch () in contact with the superhard material (), the punch () having a surface with a surface topography inverse to that of the hard material body to imprint a pattern in the superhard material () complementary to the surface topography of the punch (). The surface of the punch () contacting the superhard material () being formed of a ceramic material that does not react chemically with the superhard material () and/or a sinter catalyst for the superhard material (). A pressure of greater than 3 GPa is then together with a temperature sufficiently high for the catalyst to melt to form the cutter structure () with a layer of polycrystalline superhard material bonded to the hard material and having a surface topography corresponding to the surface topography of the hard material.

Cutting inserts and method for making same

A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a center point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed.

Twist drill tips, precursor constructions for use in making same, and methods for making and using same

A tip () for a rotary machine tool comprising a superhard structure () joined to a cemented carbide substrateby means of at least one intermediate layer () disposed between the superhard structure () and the cemented carbide substrate (), the intermediate layer or layers () comprising grains of superhard material and grains of a metal carbide material dispersed in a metal binder material.

Superhard tool tip, method for making same and tool comprising same

A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land.

Bit for a rotary drill

A method of making a construction comprising a polycrystalline super-hard structure joined to a side surface of an elongate substrate. The method includes: providing a vessel configured for an ultra-high pressure, high temperature furnace, the vessel having an elongate cavity for containing a pre-sinter assembly and defining a longitudinal axis, the cavity having opposite ends connected by a cavity wall. The pre-sinter assembly comprises the substrate, an aggregation comprising a plurality of super-hard grains arranged over at least a part of the side surface of the substrate, and a spacer structure configured for spacing the substrate apart from the cavity wall. The spacer structure comprises material having a Young's modulus of at least 300 GPa. The method further includes inserting the pre-sinter assembly into the cavity, the substrate being substantially longitudinally aligned and the spacer structure arranged between the side surface of the substrate and the cavity wall; applying a force to the pre-sinter assembly and heating it to a temperature, the force being sufficient to generate a pressure within the vessel for sintering the aggregation at the temperature, and providing the construction.

Method for making super-hard constructions

A cutter element () for a rotary machine tool having an axis of rotation, the cutter element comprising a plurality of cutting edges () defined by at least one cutter structure () comprising superhard material, consecutive cutting edges being spaced apart by at most 10 mm and configured operable to cut a body when moved in a direction that is substantially non-aligned with the axis of rotation.

Cutter elements, rotary machine tools comprising same and method for making same

A twist drill assembly () comprising a shaft () and a drill tip (); the shaft having a single internal shaft conduit () for a fluid, extending between orifices () formed into the shaft; the drill tip having an internal drill tip conduit () for the fluid, extending between orifices formed into the drill tip; the shaft and the drill tip configured such that the drill tip is connectable to an end of the shaft with the internal drill tip conduit in communication with the internal shaft conduit, allowing the fluid to be capable of flowing from the internal shaft conduit into the internal drill tip conduit; the internal shaft conduit having a spiral form aligned with a central longitudinal axis of the shaft, and configured to complement the arrangement of spiral flutes () formed on the shaft.

Twist drill assembly, components for same and method for making same

A method of manufacturing a bit for a rotary drill, the bit including a drill tip (), the method including providing a precursor structure () comprising substrate body () and a super-hard structure () joined to an upper surface of the substrate body; cutting a plurality of conformal inserts () from the precursor structure (), each insert () comprising a part of the super-hard structure; providing a drill tip () configured for receiving the insert (); and joining the insert to the drill tip ().

Method of making a bit for a rotary drill

A method of making a cutter structure comprising super-hard material defining a rake face topology is provided. The method includes providing a pre-sinter assembly comprising a substrate body having a formation surface defining a topology complementary to the rake face topology, and an aggregation comprising a plurality of super-hard grains, the aggregation disposed adjacent the formation surface of the substrate body, the substrate body comprising a source of catalyst or binder material capable of promoting the sintering of the super-hard grains at a pressure and temperature at which the super-hard material is thermodynamically stable; subjecting the pre-sinter assembly to the pressure and temperature to provide a sintered polycrystalline super-hard structure joined to the formation surface of the substrate body at a first major boundary of the super-hard structure and having a second major boundary surface opposite the formation surface; removing the substrate body to expose the first major boundary of the super-hard structure defining the rake face topology. Cutter inserts and machine tools are also provided.

Growing community of inventors

County Clare, Ireland

John James Barry