Element Six Gmbh

Element Six Abrasives S.a.

Other

Element Six Abrasives Holdings Limited

Bernd Heinrich Ries

Frank Friedrich Lachmann

Igor Yurievich Konyashin

Igor Yuri Konyashin

Robert Fries

Cornelis Roelof Jonker

Ernst Heiderich

Hauke Hinners

Daniel Hlawatschek

Eric Weinbach

Tomas Rostvall

Stig Åke Andersin

Lars-Ivar Nilsson

Markus Kilian Scharting

Ian Grenbjörk

Sebastian Ralf Hlawatschek

Peter Bush

Kersten Heinrich Schafer

Kersten Heinrich Schaefer

Stig ÅKe Andersin

Kersten Heinrich SCHÄFER

This disclosure relates to a pick tool with a PCD impact tip. The impact tip is joined to a support body at a non-planar first interface. The non-planar first interface comprises two co-axial and annular interface surfaces of differing radial widths.

Pick tool for road milling

This disclosure relates to a pick tool suitable for road milling. The pick tool comprises a central axis, an impact tip and a support body, and the impact tip is joined to the support body at a non-planar interface. The non-planar interface comprises two co-axial and annular interface surfaces.

This disclosure relates to a percussive drill bit comprising PCD studs and a hard facing material that is strategically located to minimise stud pop outs and the amount of hard facing material used.

Drill bit with wear shield

A cemented carbide body is provided with improved resistance to mechanical fatigue. The cemented carbide body comprises tantalum in the binder matrix material. The tantalum content is between 1.5 weight per cent and 3.5 weight per cent of the binder content. The binder comprises tantalum-containing inclusions having a mean largest linear dimension of no more than 80 nm

Cemented carbide material

A method of fabricating a cemented carbide article by additive manufacturing, and a granular material are disclosed. A precursor material is provided that comprises granules, the granules comprising carbide grains and a binder comprising any of cobalt, nickel and iron. Each granule has a density of at least 99.5% of the theoretical density and the granules of the precursor material have a mean compressive strength of at least 40 megapascals (MPa). An additive manufacturing process is used to manufacture the article by building up successive layers of material derived from the precursor material.

Method of manufacturing a cemented carbide material

A method for coating a body includes providing a plurality of granules in which each granule includes silicon (Si), carbon (C), chromium (Cr) and an iron group metal. The relative quantities of the Si, C and Cr are such that a molten phase will form at a melting temperature of less than 1,300 degrees Celsius when a threshold quantity of the iron group metal is accessible to the Si, C and Cr. A second source of the iron group metal is also provided. A combination of the granules and the second source is formed such that the threshold quantity of the iron group metal will be accessible to the Si, C and Cr. The granules and the second source are heated to the melting temperature to form the molten phase in contact with the body. The heat is then removed to allow the molten phase to solidify.

Method of coating a body, granules for the method and method of making granules

A strike tip () for a pick tool, comprising a strike structure () joined to a substrate () at an interface boundary (), the strike structure () comprising or consisting or super-hard material and the substrate () comprising or consisting of carbide material; the strike tip having a proximate strike end () coterminous with the super-hard material and a distal end () defined by the substrate (), a side connecting the strike and distal ends; the strike end () including a flat apex area () and an outer area extending from the apex to the side. The apex area () is substantially less than the outer area, and is at least 1 square millimeter and at most 25 square millimeters.

Strike tip for a pick tool having a flat apex area

A cemented carbide material comprising tungsten carbide grains, the content of tungsten carbide in the cemented carbide material being at least 75 weight percent and at most 95 weight percent. The cemented carbide material comprises a binder phase comprising any of cobalt, iron, or nickel, and nanoparticles. The nanoparticles include material according to the formula CoWC, where x is a value in the range from 1 to 7, y is a value in the range from 1 to 10 and z is a value in the range from 0 to 4. The nanoparticles have a mean grain size of no more than 10 nm and at least 10 percent of the nanoparticles have a size of at most 5 nm. The volume percent of the tungsten carbide grains having a grain size of no more than 1 &#x3bc;m is less than 4 percent. A method for producing the cemented carbide material is also disclosed.

Cemented carbide material and related producing method

A method of making a strike construction for a pick tool, a strike construction for a pick tool and a pick tool. The strike construction comprises a strike tip () and a support body (), in which respective attachment ends () of each of the strike tip and support body are joined to each other, the attachment end of the strike tip is coterminous with cemented carbide material comprised in the strike tip, and the attachment end of the support body is coterminous with cemented carbide material comprised in an end portion of the support body, the end portion being configured such that sides of the support body depend divergently from its attachment end. The method includes providing the strike tip () and a precursor body () for the support body, in which a proximate end () of the precursor body is coterminous with cemented carbide material comprised in an end portion of the precursor body, the end portion of the precursor body being configured such that sides of the precursor body depend divergently from its proximate end, the area of which is less than the area of the attachment end of the support body (). The method further including processing the end portion of the precursor body to increase the area of the proximate end to that of the attachment end of the support body; and joining the respective attachment ends of the strike tip and the support body to provide the strike construction.

Strike constructions, picks comprising same and methods for making same

A polycrystalline diamond composite compact element comprises a body of polycrystalline diamond material and a cemented carbide substrate bonded to the body of polycrystalline material. The cemented carbide substrate has tungsten carbide particles bonded together by a binder material comprising an alloy of Co, Ni and Cr. The tungsten carbide particles form between 70 weight percent and 95 weight percent of the substrate. The binder material comprises between about 10 to 50 wt. % Ni, between about 0.1 to 10 wt. % Cr, and the remainder weight percent comprising Co. The size distribution of the tungsten carbide particles in the substrate has fewer than 17 percent of the carbide particles with a grain size of equal to or less than about 0.3 microns, between about 20 to 28 percent of the tungsten carbide particles having a grain size of between about 0.3 to 0.5 microns; between about 42 to 56 percent of the tungsten carbide particles having a grain size of between about 0.5 to 1 microns; less than about 12 percent of the tungsten carbide particles being greater than 1 micron; and the mean grain size of the tungsten carbide particles is about 0.6+0.2 microns.

Polycrystalline diamond composite compact elements and methods of making and using same

A pick tool () comprising a strike member () non-moveably attached to a pick body (), the strike member comprising a strike structure. The strike structure comprises super-hard material and defines a planar strike surface (), the strike surface defining a cutting edge () that includes an apex () in the plane of the strike surface (). The thickness of at least a proximate volume () of the strike structure adjacent the cutting edge () is at least about 2 millimeters.

Pick tool having a super-hard planar strike surface

A pick assembly is provided, comprising a bit assembly and a holder assembly; the bit assembly comprising a bit support body, a fastener mechanism and a deflectable member, cooperatively configured such the deflectable member can be deflected responsive to the progressive coupling of the bit support body to the fastener mechanism. The holder assembly comprises a holder body and is configured for accommodating and retaining the bit assembly by interference means. The holder assembly and bit assembly are cooperatively configured such that the retention of the bit assembly by the holder assembly by interference means can be progressively increased responsive to the progressive coupling of the bit support body with the fastener mechanism when the bit assembly is accommodated by the holder assembly, operative to prevent substantial movement of the bit support body relative to the holder body in use.

Pick assembly, bit assembly and degradation tool

The invention relates to hard-metal body comprising a hard-metal, the hard-metal comprising tungsten carbide grains and metal binder comprising cobalt having a concentration of tungsten dissolved therein, the body comprising a surface region adjacent a surface and a core region remote from the surface, the surface region and the core region being contiguous with each other; the mean binder fraction of the core region being greater than that of the surface region; the mean carbon concentration within the binder being higher in the surface region than in the core region; to tools comprising same and methods of making same.

Hard-metal body

A pick tool comprising a super-hard strike tip, a base and a unitary cemented carbide support body comprising a head portion including an overhang portion, and an insertion shaft extending from the head portion, a surface of the overhang portion extending laterally from the insertion shaft; the strike tip is attached to the head portion of the support body and the base is provided with a bore into which the insertion shaft is shrink fitted; the base has an external surface adjacent the bore and overhang portion of the head portion is configured to extend over at least an area of the external surface operative to shield the area from wear when in use.

Pick tool and assembly comprising same

A pick tool assembly () comprises a strike tip (), a holder () and a reversible attachment mechanism) for coupling the strike tip () to the holder (), in which the strike tip () comprises a strike surface including an apex. The pick tool assembly () will be configured such that the strike tip () can be non-moveably coupled to the holder () in a plurality of mutually opposite orientations relative to the holder, the orientations being about a symmetry axis (L) through the apex. The attachment mechanism will limit the opposite orientations (--) to being at least aboutdegrees azimuthally apart, and be configured such that the strike tip () may be coupled to the holder assembly () in either of two and only two mutually opposite orientations.

Growing community of inventors

Burghaun, Germany

Bernd Heinrich Ries