Sandvik Intellectual Property Ab

Diamond Innovations. Inc.

Sandvik Mining and Construction Tools Ab

Hyperion Materials & Technologies (sweden) Ab

Malin Martensson

Gerold Weinl

Susanne Norgren

Johan Sundstrom

Ioannis Arvanitidis

Krystof Turba

Steven William Webb

Yuanbo Lin

Thomas Easley

Mirjam Lilja

Rui Shao

Anna Ekmarker

Annika Kauppi

Torbjorn Selinder

Jose Maria Tarrago Cifre

Ida Borgh

Andreas Markstrom

Shirishkumar Bhosale

Anand Goswami

Shailesh Prabhune

Thomas C Easley

A rock drill insert made of cemented carbide includes hard constituents of tungsten carbide (WC) in a binder phase of Ni—Cr, or Ni—Co—Cr, and a balance of WC and unavoidable impurities. The cemented carbide has a 3.5-18 wt % binder phase. The binder phase has >0 wt % Ni. The mass ratio Cr/(Ni+Co) is 0.02-0.19. A difference between the hardness at 0.3 mm depth at some point of the surface of the rock drill insert and the minimum hardness of the bulk of the rock drill insert is at least 30 HV3.

Rock drill insert

A lithography based method for the manufacture of diamond composite materials in which green bodies are prepared by a layer-by-layer construction with resulting green bodies de-bound and sintered to achieve a dense high hardness material.

Diamond composites by lithography-based manufacturing

A rock drill insert made of cemented carbide having hard constituents of tungsten carbide (WC) in a binder phase including Co, wherein the cemented carbide includes 4-18 mass % Co and a balance of WC and unavoidable impurities. The cemented carbide also includes Cr in such an amount that the mass ratio Cr/Co is within the range of 0.04-0.19, and the difference between the hardness at a 0.3 mm depth at any point of the surface of the rock drill insert and the hardness of the bulk of the rock drill insert is at least 40 HV3.

A method of producing a component of a composite of diamond and a binder, wherein a Hot Isostatic gas Pressure process (HIP) is used, includes the step of enclosing a de-bound green body having compacted diamond particles in an infiltrant. The method includes the further steps of enclosing the de-bound green body and the infiltrant in a Zr-capsule that has Zirconium as a main constituent and sealing the Zr-capsule, and applying a predetermined pressure-temperature cycle on the unit formed by the de-bound green body, infiltrant and capsule in which the infiltrant infiltrates the de-bound green body and the de-bound green body is further densified in the sense that the volume thereof is decreased.

Method of producing a component of a composite of diamond and a binder

A cBN material and a method of making a cBN material, the method including the steps of providing a powder mixture comprising cBN grains, aluminum and a Ti(CxNyOz)a powder, subjecting the powder mixture to a milling to form a powder blend, subjecting the powder blend to a forming operation to form a green body, subjecting the green body to a pre-sintering step, at a temperature between 650 to 950&#xb0; C., to form a pre-sintered body, and subjecting the pre-sintered body to a HPHT operation to form the cBN material. For the Ti(CxNyOz)a powder, 0.05&#x2264;z&#x2264;0.4. In addition, a cBN material includes cBN grains, an Al2O3 phase, a binder phase of TiC, TiN and/or TiCN, W and Co, whereby a quotient Q is &#x3c;0.25 of the cBN material.

Method of making a cBN material

A method of making a near-net superhard material body includes preparing granules from a mixture of superhard powder, binders, and fluids, compacting the granules to form a soft green complex-shaped body, heating the soft green body in a furnace to form a hard green body free from residual binders, embedding one or more of the hard green bodies in a containment powder or a containment means and forming a pressure cell, sintering the cell at high pressure and high temperature, and removing the containment powder from the cell or removing the inserts from the containment means to reveal one or more near-net bodies.

Near-net cutting tool insert

A sintered cutting element including a superabrasive layer supported on a substrate. The superabrasive layer includes superabrasive material and secondary phase, and the substrate includes a binder phase. The sintered cutting element is formed by a high temperature high pressure sintering process in which separate source elements melt and sweep first through the superabrasive layer, and then to the substrate to form the secondary phase and binder phase. The superabrasive layer is substantially free of or free of eta-phase, CoWC. Further, the portion of the substrate nearest the interface between the superabrasive layer and the substrate has equal or more binder phase than portions of the substrate further from the interface. In certain embodiments, the superabrasive material includes polycrystalline diamond, and the substrate includes cobalt tungsten carbide.

High quality PCD compact

Growing community of inventors

Nacka, Sweden

Malin Martensson