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4469489 |
Coated composite modified silicon aluminum oxynitride cutting tools
Coated wear resistant composite ceramic cutting tools comprise a composite substrate body consisting essentially of a particulate material selected from the group consisting of the refractory metal...
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4465650 |
Process for preparing nitrided superhard composite materials
A cutting insert having a cutting portion comprising a dispersion of diamond crystals in a matrix of β-silicon carbide and silicon nitride is produced by forming a first dispersion of diamond...
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4457765 |
Abrasive bodies
The invention provides an abrasive body suitable for mounting in a tool for abrading operations, the body including an abrasive compact comprising a mass of abrasive particles, present in an amount...
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4456500 |
Method of manufacturing a polisher
In a method of making a polishing element a photoresist film 2 is first deposited on a surface of metal stock 1. A photomask 3 is then used to selectively cover portions of the deposited...
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4449989 |
Coated silicon nitride cutting tools
Coated cutting tools and coated cutting tool inserts having improved mechanical and chemical wear resistance under demanding conditions of machining speed, temperature, or workpiece hardness...
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4448590 |
Flap-type rotary abrasive device
A flap-type rotary abrasive device comprising a plurality of leaves of flexible material, arranged in an annular array having a central bore. End caps having annular passageways are provided to...
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4441894 |
Coated composite silicon nitride cutting tools
Cutting tools and cutting tool inserts having improved mechanical and chemical wear resistance under demanding conditions of machining speed, temperature, or workpiece hardness comprise a composite...
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4426366 |
Novel molybdenum oxycarbonitride compositions
Novel molybdenum oxycarbonitride compositions are described together with a general method of synthesis. The compositions can be obtained by the relatively low temperature thermal decomposition of...
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4404003 |
Microwave heating process for grinding wheels
A method for making low porosity resin bonded product containing abrasive grams by preheating the abrasive grain mix prior to pressing and curing to a temperature within a range to just soften or...
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4370148 |
Chlorofluoroferrate(II,III), a process for its manufacture, its use and a grinding wheel containing chlorofluoroferrate(II,III)
Chlorofluoroferrates(II,III) are manufactured by fusing alkali metal halides or ammonium halides with an iron(III) halide and metallic iron. The starting materials used are, in particular, (a) an...
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4369046 |
Process for making an abrasive grinding wheel
Co-molded articles such as abrasive grinding wheel structures having a polyimide resin-bonded phase and a metal-bonded phase are provided. A process also is provided for co-molding such structures...
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4362535 |
Sintered metal bonded diamond abrasive articles
This invention provides a metal bonded diamond abrasive article of nickel-copper basis. The sintered metal bond, which consists essentially of 2 to 30% by weight of copper, 1 to 40% by weight of...
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4341532 |
Laminated rotary grinder and method of fabrication
A laminated rotary grinder including a parallity of thin grinding stone discs laminated together in an axial direction wherein the thickness of each of the discs is in the range of one to ten mm,...
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4338750 |
Method for applying organopolysiloxane fluids to grinding wheels containing cubic boron nitride abrasives
A method for improving the overall performance of grinding wheels containing cubic buron nitride abrasives through the application of an organopolysiloxane fluid to the point of contact between the...
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4334895 |
Glass bonded abrasive tool containing metal clad graphite
Glass bonded grinding wheels including graphite or other inert dry film lubricant filler can be made by conventional techniques if the filler material is protected from oxidation by a metal...
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4319889 |
Ultrasharp diamond edges and points and methods of making same by precision micro-irradiation techniques
An ultrasharp diamond edge or point, which may be a monocrystalline diamond cut and ground to provide an ultrasharp edge or point or a polycrystalline diamond molded from ultrafine diamond or...
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4311490 |
Diamond and cubic boron nitride abrasive compacts using size selective abrasive particle layers
Disclosed is an improved process for preparing a composite compact wherein a mass of abrasive crystals, a mass of metal carbide, and a bonding medium are subjected to a high-temperature/high...
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4285171 |
Abrasive flap drum
An abrasive pack for use with an elongated hub having a plurality of spaced slots each extending along the length of the drum and with a plurality of the abrasive packs each extending outwardly...
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4282012 |
Composition for the manufacture of abrasive tools
The present invention relates to compositions for the manufacture of abrasive tools which can be most effectively used for the manufacture of tools employed for machining of articles made of...
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4282011 |
Woven fabrics containing glass fibers and abrasive belts made from same
A woven fabric comprising glass fibers cushioned from each other by organic fibers in the warp direction, the sinuosity of the glass fibers being less than or equal to the sinuosity of the organic...
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4270932 |
Polishing of silver-plated articles
The invention relates to the polishing of silver-plated, in particular electro-plated silver. The feature of the invention is the provision of a formulation which in the dry, solid state has a high...
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4260397 |
Method for preparing diamond compacts containing single crystal diamond
An improvement for making polycrystalline compacts containing single crystal diamonds embedded therein is disclosed. Cracking of such compacts is minimized by isolating the diamond in a relatively...
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4248606 |
Supported diamond
Compacts are provided in which one or more single crystal diamonds, having a largest dimension of at least one millimeter, are embedded in the polycrystalline matrix which may be made of diamond;...
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4247305 |
Abrasive structures and methods of their preparation
Composite compacts comprising a cluster of abrasive particles selected from among diamond, cubic boron nitride and wurtzite boron nitride on a support medium, are securely bonded to metal tool...
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4246003 |
Lap cutting abrasive
A lap cutting abrasive for use with lap cutting blades, comprising one part y weight of a low viscosity carrier liquid, and one to three parts by weight of cutting particles having an average size...
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4243395 |
Method for precision grinding of hard, pointed materials
A method of lapping the sharp point of a hard material using a silicon oxide, glow discharge deposited abrasive layer wherein the abrasive layer is thick enough to prevent penetration of the point...
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4236357 |
Etched metal abrasives
An etched metal abrasive formed from a laminated sheet of steel having a top layer of high carbon steel and a base layer of low carbon steel.
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4203732 |
Method of making an abrasive product
The invention provides a method of making an abrasive product, e.g. a grinding wheel rim, which consists in providing a mixture of needle-shaped abrasive particles and the starter ingredients for a...
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4196181 |
Microcrystalline monolithic carbon material
A material consisting of grains varying in size from 0.1 to a few microns intergrown so as to form regular aggregates. The geometric shape of the material is preset by a pattern made from a...
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4190422 |
Metallic abrasive produced from a steel mill waste material
A method for preparing a steel mill waste material comprised of inner metallic cores encased in outer shells of iron oxides for use as size-graded metallic abrasives and the product so produced are...
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4175930 |
Method for finishing surfaces of non-magnetic articles by means of ferromagnetic abrasive powder in magnetic field
A method for surface finishing of non-magnetic articles by means of ferromagnetic abrasive powders in a magnetic field, wherein ferromagnetic powder is introduced into the magnetic field produced...
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4154026 |
Abrading tool
A tool for releasably supporting a length of abrasive strip material in a generally cylindrical coil with its abrasive surface out and for transferring torque from a drive chuck to rotate the...
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4150514 |
Process for molding bonded refractory particles
A process is disclosed for molding a mixture of refractory particles, and especially abrasive refractory particles, and an organic resinous binder into an integral body. The mixture is preheated,...
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4145385 |
Paste extrusion of PTFE
The fibrillated surface layer of an unsintered extruded mass of a polytetrafluoroethylene is broken by mechanical or electrical force to facilitate evaporation of the lubricant whereby a molded...
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4118459 |
Chemically removing iron from grits
Iron is removed from grits, e.g. crushed corundum by contacting the grits with aqueous hydrochloric acid for dissolving of the iron and provision of a suspension of the grits in the acedic aqueous...
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4073096 |
Process for the manufacture of abrasive material
Process for the manufacture of abrasive material in which (1) an abrasive mix is brought to fusion as in an electric arc furnace, (2) a relatively cold substrate is dipped into the molten material...
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4070796 |
Method of producing abrasive grits
Abrasive grits are prepared from molten oxide melt by pouring molten abrasive composition between plurality of spaced plates, made of heat resistant material such as graphite or metal to protect...
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4054426 |
Thin film treated drilling bit cones
A thin film treatment of rock formation drilling bits mounting a plurality of toothed rotatably mounted cones with cones having hard surface films deposited on the outer surface by a high...
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4054425 |
Process of making a grinding wheel assembly
A method of making grinding wheel mounts by molding a central hub onto a thermoset plastic abrasive disc is provided. An aromatic polycarbonate thermoplastic resin is molded to form a hub on a...
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4049397 |
Process for the preparation of granulated abrasives from fused or sintered refractory inorganic hard substances having a high grain toughness
A process for the manufacture of granular abrasives having improved grain toughness from refractory, inorganic hard substances which comprises crushing a lump or block of said refractory inorganic...
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4020820 |
Process for truing grinding wheels
A process for truing bonded, diamond and boron nitride grinding wheels utilizing a special tool made of molybdenum, or closely related metals including tantalum and columbium as the truing or...
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4021209 |
Aramid fiber reinforced abrasive wheel
An improved abrasive grinding wheel such as a cutoff or snagging wheel, including a reinforcing fabric of aramid fibers.
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3985521 |
Method for producing a grinding foil
A grinding foil which is to be used for grinding a record cutting or playback stylus is manufactured by providing a surface layer of a plastic foil with indentations for accommodating a grinding...
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3974971 |
Grinding discs for defibering fibrous material
Grinding discs in apparatus for manufacture of pulp composed of a support disc and segments mounted on said support disc so as to form a ring. The segments are formed with ribs and grooves for...
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3967418 |
Work polishing tool and method of making same
A work-polishing tool including a rigid annular core having at spaced intervals around its periphery strips of readily-deformable material such as sheet rubber. These strips extend radially...
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3960518 |
Method of forming a cutting tool
A cutting tool is disclosed comprising a plurality of blocks of composite, comminuted abrasive in a bonding matrix, connected to a metallic substrate by a braze comprising a layer of an elastically...
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3950149 |
Method for continuously producing resinoid wheels
An abrasive composition prepared by kneading abrasive grains and a binder together, with addition of a filler when desired, is molded into a block, which is heated by a high-frequency wave heater...
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3921616 |
Process for truing a diamond wheel utilizing a molybdenum tool
A process for truing a resin bonded, diamond grinding wheel utilizing a molybdenum tool as the truing or dressing tool. The molybdenum tool is held in frictional contact with the peripheral work...
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3918219 |
Catalyst systems for synthesis of cubic boron nitride
Certain aluminum alloys have been found to be effective catalysts for the synthesis of cubic boron nitride from hexagonal boron nitride. Nickel/aluminum and cobalt/aluminum alloys in particular are...
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3899307 |
Resin bonded diamond wheels with copper and silicon carbide fillers
The invention is directed to a filler composition for an organic resin bonded grinding wheel. The filler is made up of two constituents, namely, a metal, mixtures of metals or alloys thereof, and...
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