Direct Plated Tools | Publication Date: 5.23.18
Summary:
An abrasive article includes a first bonding region including metal overlying a substrate, abrasive particles in the first bonding region, secondary particles disposed in a second bonding region including metal overlying the first bonding region, and a third bonding region overlying the second bonding region. The first and second bonding regions can be formed by an electroplating process, and the third bonding region can be formed by an electroless plating process. Secondary particles can be disposed in only the second bonding region and the third bonding region, and the first bonding region can be free of secondary particles.
Keywords:
Abrasives, abrasive tools, abrasive article, direct plated tools, grinding, drilling, sawing, polishing, carving, deposition process, plating, electroplating, electroless, electrolyte plating, ceramics, glasses, metals, metal alloys, cements, thermoplastics, thermosets, elastomers, lead, silver, copper, zinc, indium, tin, titanium, chromium, manganese, cobalt, niobium, tantalum, tungsten, palladium, platinum, gold, ruthenium, iron, nickel, cobalt, molybdenum, vanadium, steel
Download >>Abrasive Article Including Shaped Abrasive Particles | Publication Date: 3.8.17
Summary:
A shaped abrasive particle having a body including a first surface, a second surface, and a third surface extending between the first surface and the second surface, and wherein the body includes an exterior corner having a corner radius within a range of at least 0.5 microns and not greater than 15 microns. A method for forming shaped abrasive particles including creating a substrate comprising a sintered ceramic material; and cutting the substrate to form a plurality of shaped abrasive particles from the substrate. A method of forming abrasive particles including depositing a free-standing droplet on a substrate; the droplet comprising a mixture including a precursor ceramic material; and sintering the free-standing droplet to form a shaped abrasive particle having an elliptical shape.
Keywords:
alumina, crystal size, hardness, deformation, boehmite, alpha alumina, shaped abrasive particle (SAP), SAP, SAPs, precursor, precursor shaped abrasive particle, precursor ceramic material, green particle, green body, substrate, particulate, particulate material, wt %, wt%, weight percent, vol %, vol%, volume, volume percent, central region, center region, surface, upper surface, exterior surface, side surface, exterior corner, corner radius, droplet, drops, free-standing, contact angle, concentration, polygonal, two-dimensional, two dimensional, two-dimensional shape, three-dimensional, three dimensional, three-dimensional shape, plane, length, width, polygons, ellipsoids, partial-ellipsoid, concave, convex, planar, curved, elliptical, conical, frustoconical, spiral, rake, rake-shaped, pyramid, polyhedral, cuboid, annular, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, triangle, triangular, rectangle, rectangular, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, body, aspect ratio, thickness, midpoint, corner, edge, contour, cross section, cross-section, average, side, angle, first angle, second angle, quadrilateral, corner, texture, bottom surface, side surface, pattern, feature, curve, polymer, oxide, nitride, carbide, boride, oxycarbide, oxynitride, earth, rare earth, rare-earth, hafnium (Hf), zirconium (Zr), niobium (Nb), tantalum (Ta), molybdenum (Mo), vanadium (V), lithium (Li), sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), strontium (Sr), scandium (Sc), yttrium (Y), lanthanum (La), praseodymium (Pr), niobium (Nb), nitrate, chloride, sulfate, phosphate, spraying, dipping, depositing, impregnating, transferring, punching, cutting, pressing, crushing, form, forming, extrude, extruding, applying, pressing, casting, dicing, dicing blade, drying, coating, sectioning, water, direction, rolling, cutting, shaping, drying, printing, screen printing, screen, sinter, sintered, surface shaping, curing, reacting, radiating, planarizing, calcining, sintering, sieving, doping, filling, partially filling, deposit, depositing, deposition, deposition assembly, deposition volume, micro-void, tool, die, die opening, opening, belt, translated, inorganic, organic, organic material, hydrophobic, storage modulus, viscosity, solids, solids content, solids loading, liquid, liquid content, ceramic, ceramic powder, gel, sol gel, sol-gel, seeded gel, seeded-gel, alumina particles, shape-stable, mixture, blend, blend of abrasive particles, polycrystalline, agglomerate, superabrasive, crushed, crushed abrasive particle, abrasive grain, average particle size, average grain size, body, green, dispersed, uniform, non-uniform, non uniform, distributed, crystalline, grain size, grit size, bonded abrasive, bond, matrix, coated abrasive, fixed abrasive, substrate, coat density, height, width, diluent particles, diluent, median particle size.
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Abrasive Article Including Shaped Abrasive Particles | Publication Date: 3.8.17
Summary:
A shaped abrasive particle including a body including a first surface, a second surface, a side surface extending between the first surface and second surface, and a flange portion extending from the side surface and the first major surface. A shaped abrasive particle having a body defining a partial-ellipsoid shape, the body including a first surface, a second surface, and a third surface extending between a portion of the first major surface and the second major surface, wherein at least a portion of the first surface and a portion of the second surface are connected to each other along a first edge and wherein a portion of the first surface and a portion of the third surface are connected to each other and define a second edge, and wherein a portion of the second surface and a portion of the third surface are connected to each other and define a third edge. A shaped abrasive particle having a toothed body including a plurality of teeth extending from one side of the body, wherein the plurality of teeth define external corners of the body having an average spacing of less than 0.5(L), wherein L defines the length of the body.
Keywords:
alumina, crystal size, hardness, deformation, boehmite, alpha alumina, shaped abrasive particle (SAP), SAP, SAPs, precursor, precursor shaped abrasive particle, particulate, particulate material, wt %, wt%, weight percent, vol %, vol%, volume, volume percent, central region, center region, upper surface, exterior surface, side surface, flange, flange portion, single flange, multi-flanged, raised portion, depressed region, exterior corner, gear, tooth, teeth, peripheral, bisecting, axis, concentration, polygonal, two-dimensional, two dimensional, two-dimensional shape, plane, length, width, polygons, ellipsoids, partial-ellipsoid, concave, convex, planar, curved, elliptical, conical, frustoconical, spiral, rake, rake-shaped, pyramid, annular, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, triangle, triangular, rectangle, rectangular, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, body, aspect ratio, thickness, midpoint, corner, edge, contour, cross section, cross-section, average, side, angle, first angle, second angle, quadrilateral, corner, texture, bottom surface, side surface, pattern, feature, curve, polymer, oxide, nitride, carbide, boride, oxycarbide, oxynitride, earth, rare earth, rare-earth, hafnium (Hf), zirconium (Zr), niobium (Nb), tantalum (Ta), molybdenum (Mo), vanadium (V), lithium (Li), sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), strontium (Sr), scandium (Sc), yttrium (Y), lanthanum (La), praseodymium (Pr), niobium (Nb), nitrate, chloride, sulfate, phosphate, spraying, dipping, depositing, impregnating, transferring, punching, cutting, pressing, crushing, form, forming, extrude, extruding, applying, pressing, casting, dicing, drying, coating, sectioning, water, direction, rolling, cutting, shaping, drying, printing, screen printing, screen, sinter, sintered, surface shaping, curing, reacting, radiating, planarizing, calcining, sintering, sieving, doping, filling, partially filling, micro-void, tool, die, die opening, opening, belt, translated, inorganic, organic, organic material, storage modulus, viscosity, solids, solids content, solids loading, liquid, liquid content, ceramic, ceramic powder, gel, sol gel, sol-gel, seeded gel, seeded-gel, alumina particles, shape-stable, mixture, blend, blend of abrasive particles, polycrystalline, agglomerate, crushed, crushed abrasive particle, abrasive grain, average particle size, average grain size, body, green, dispersed, uniform, non-uniform, non uniform, distributed, crystalline, grain size, grit size, bonded abrasive, coated abrasive, fixed abrasive, substrate, coat density, height, width, diluent particles, diluent, median particle size
Download >>Making abrasive particles with rheology modifiers and partial silane treating for coated abrasive applications | Publication Date: 11.30.16
Summary:
The formation of initial and final particles with desirable shapes and features, and fewer defects, can be improved by modifying the rheology of the gel. In particular, adding starches or other organic materials can improve the viscoelastic behavior of the gel and reduce sticking during removal from tool openings. Then, by partially silane treating the particles after sintering, the orientation of the particles and distribution of the particles on a coated abrasive can be optimized for better grinding performance.
Keywords:
alumina, boehmite, alpha alumina, shaped abrasive particle (SAP), SAPs, precursor shaped abrasive particle, particle, wt %, wt%, weight percent, polygonal, two-dimensional, two dimensional, two-dimensional shape, plane, length, width, polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, triangle, triangular, rectangle, rectangular, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, body, depositing, impregnating, transferring, punching, cutting, pressing, crushing, form, forming, extrude, extruding, applying, pressing, casting, dicing, drying, coating, forcing, sectioning, perforating, water jet, water-jet, blade, radiation, laser, sheet, direction, altering, embossing, rolling, cutting, engraving, patterning, shaping, drying, heating, heat lamp, printing, molding, screen printing, screen-printing, screen, sinter, sintered, surface shaping, curing, reacting, radiating, planarizing, calcining, sintering, sieving, doping, densifying, grinding, finishing, polishing, tool, die, die opening, opening, belt, translate, translated, translating, inorganic, viscosity, solids, solids content, solids loading, liquid, liquid content, ceramic, ceramic powder, gel, sol gel, sol-gel, seeded gel, seeded-gel, alumina particles, shape-stable, mixture, blend, blend of abrasive particles, polycrystalline, crushed, crushed abrasive particle, abrasive grain, average particle size, average grain size, body, green, dishing, flashing, dispersed, uniform, non-uniform, non uniform, distributed, crystalline, grain size, grit size, bonded abrasive, coated abrasive, fixed abrasive, substrate, open-coat, closed-coat, coat density, cavities, mold, dried, water, volatiles, mixture, drying process, rheology, viscoelastic, starch, corn, rice, tapioca, potato, pore, porosity, algae, guar, gum, polysaccharide, protein, soy, polyamide, additive, ammonia, ammonium hydroxide, freeze, freezing, cure, semi-cure, semi-curing, UV, ultraviolet, UV-curable, UV-cure, resin, UV light, UV-based, EB, actinic, radiation, orientation, homogeneous, homogeneity, electrostatic, projection, attract, attraction, behavior, adhere, adherence, silane, silane-coated, coat, coating.
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