Other

Element Six Abrasives S.a.

Element Six Gmbh

Element Six (production) (pty) Ltd.

Element Six (pty) Ltd.

Stig Ake Andersin

Nedret Can

Iain Patrick Goudemond

Bo Christer Olofsson

James Alexander Reid

Mehmet Serdar Ozbayraktar

Matthew William Cook

Leif Anders Sandstrom

Cornelis Roelof Jonker

John James Barry

Roger William Nigel Nilen

Robert Fries

Stefan Magnus Olof Persson

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 method of making polycrystalline CBN compacts, high in CBN content, is provided. The method includes making a powdered composition by subjecting a mixture of CBN, present in an amount of at least 80 volume percent of the mixture, and a powdered binder phase to attrition milling. This powdered mixture is subjected to conditions of elevated temperature and pressure suitable to produce CBN compacts.

Cubic boron nitride compact

A method of producing a tool insert which comprises a central metal portion having edge regions of superabrasive material bonded thereto and presenting cutting edges or points for the tool insert is disclosed. A body () having major surfaces on each of opposite sides thereof, each having spaced strips () of superabrasive material, typically abrasive compact such as PCBN or PCD, for example, separated by a metal region or regions, such as cemented carbide, is provided. Each superabrasive strip of one major surface is arranged in register with a superabrasive strip of the opposite major surface. Alternatively, each superabrasive strip extends from one major surface to the opposite major surface. The body is severed from one major surface to the opposite major surface along at least two sets of planes intersecting at or in the respective superabrasive strips to produce the tool insert.

Tool insert

A CBN compact comprises CBN and a matrix phase incorporating a secondary hard phase selected from TiCN, TiC, TiN and mixtures and solid solutions thereof and a maximum amount of titanium diboride where the XRD peak height of the (101) titanium diboride peak (after background correction) is less than 12% of the peak height of the (111) CBN peak.

A method of manufacturing a powdered composition or starting material used in producing a CBN compact which comprises CBN, a secondary hard phase and a binder phase includes two steps of attrition milling. First, the attrition milling of the secondary hard phase and the binder phase. Second, adding CBN particles to the fine particle mixture of the first attrition milling and then attrition milling this mixture.

A method of producing a tool insert is disclosed. A body () of a superabrasive material having major surfaces on each of opposite sides thereof is provided. It is typically an abrasive compact disc such as a PCBN or a PCD disc, for example. An array of spaced cores () filled with hard metal, such as cemented carbide, for example, extends from one major surface to the opposite major surface. The body is severed from one major surface to the opposite major surface along intersecting, transverse lines () around the respective hard metal cores to produce the tool insert. The body may include an interlayer () of hard metal intermediate the opposite major surfaces, preferably the same hard metal as the cores, such that the cores are integrally formed with the interlayer.

Growing community of inventors

Robertsfors, Sweden

Stig Ake Andersin