Abstract: A clogging phenomenon in the surface layer of the contact face of a soft plastic-and-abrasive composite for polishing painted surfaces, which reduces the efficiency of the polishing work, is alleviated by mixing into the soft plastic backing material of the composite containing abrasive fine particles, non-abrasive globular particles preferably formed out of bubble material. The globular particles are rotatable in the surface layer of the contact face of the soft backing when the composite is in rubbing contact with the surface to be polished. Water or a surfactant may be interposed between the surface to be polished and the composite. The surface to be polished is rubbed with the composite to remove contaminating substances adhering to the surface to be polished.

Abstract: A metal cutting insert comprises a carbide substrate, and at least one body of superhard abrasive material, such as PCD or PCBN, bonded to an edge surface of the substrate and extending from one side surface to the other side surface of the substrate. There can be a plurality of superhard bodies disposed at respective corners of the substrate. The abrasive material is applied to the substrate in a container and then sintered and simultaneously bonded to the substrate by an elevated pressure/temperature step. Inserts can be made in rod form (i.e., in one piece) and then the rod can be transversely sliced into thin inserts; or the inserts can be made in separate pieces, with or without separators within the container.

Abstract: A composite powder particle, consisting of a core and a coating, and consisting either completely or partly of a superhard matter different from that of the core, and being prepared by means of a special method, at which the superhard matter is at least partly formed from a gaseous phase at sub-pressure and at temperatures below 1200.degree. C.

Abstract: An abrasive article is provided having a sheet-like structure having a major surface having deployed in fixed position thereon a plurality of abrasive three-dimensional abrasive composites, each of the composites comprising abrasive particles dispersed in a binder and having a precise shape defined by a distinct and discernible boundary which includes specific dimensions, wherein the precise shapes are not all identical.

Abstract: The formation of uniformly high quality abrasive compacts, especially cubic boron nitride compacts, is achieved by employing a substrate material (comprising a carbide such as tungsten carbide and a ferrous metal such as cobalt) having a titanium content of not greater than 100 ppm as shown by analysis. Preferably, the maximum tantalum content is also not greater than 100 ppm.

Abstract: An abrasive article, for example, a coated, bonded, or nonwoven abrasive article comprising a binder, a plurality of abrasive particles, and an antiloading component in a peripheral coating of the abrasive article.

Abstract: A method for making an abrasive article is disclosed, including the steps of providing a substrate having abrasive means on one surface, and providing a plurality of hooking stems on the opposite surface thereof. Several illustrative variations of the inventive method are disclosed.

Abstract: Microcrystalline bodies based on .alpha.-Al.sub.2 O.sub.3 are made by drying sub-micron powders, press compacting and shock sintering at an intermediate sinter temperature range of 1,300.degree. to 1,550.degree. C., i.e. bringing the compact up to such range in under 60 seconds, preferably under 10.

Abstract: The invention relates to a superabrasive grinding wheel comprising very hard abrasive particles and a binder with a metallic matrix, which also contains "pore-forming" adjuvants, notably hollow beads made of ceramic.This grinding wheel may be used notably for the machining or grinding of glass articles, especially for the grinding of the edges of glass sheets.

Abstract: A flexible abrasive member comprising a first porous layer of mesh, non-woven or perforated sheet, conductive or non-conductive material to which on one side deposits are deposited by way of any metal plating technique of either the electrolytic, electroless or vacuum deposition type, or any galvanic process, abrasive particles being embedded in the metal deposits, a layer of filling material, such as a resin, being present between the deposits which filling material is bonded to said first porous layer and/or the deposits, and at least a second porous layer of mesh, non-woven or perforated sheet, conductive or non-conductive material being present and being laid substantially along one side of the first porous layer. The side edge of the deposit has at least one annular groove along at least part of the circumference of the deposit.

Abstract: Methods for making abrasive articles (e.g., coated abrasives, bonded wheels, and three dimensional, low density abrasives) comprising crystalline ceramic, alpha alumina-based abrasive grain.

Abstract: A method of manufacture of an abrasive body for use as a wear part, cutting tool insert or the like, includes the steps of providing a mixture comprising an organometallic polymer capable of being pyrolized to produce ceramic particles, and a mass of abrasive particles such as diamond or cubic boron nitride, applying heat to the mixture to cause the polymer to polymerize, and sintering of the pyrolized mixture to a coherent abrasive body.

Abstract: A method of making an alpha alumina-based ceramic abrasive grain comprising, on a theoretical oxide basis, Al.sub.2 O.sub.3, Fe.sub.2 O.sub.3, and SiO.sub.2. The abrasive grain has a surface roughness height of greater than about 200 nanometers and a density of greater than about 3.50 g/cm.sup.3. Preferably, the alpha alumina-based ceramic abrasive grain has alpha alumina crystallites having an average crystallite size of less than about 0.5 micrometer (more preferably, less than about 0.3 micrometer). The presence of the SiO.sub.2 in combination with Fe.sub.2 O.sub.3 increases the amount of transgranular fracture of the abrasive grain, reduces the alpha alumina crystallite growth during sintering of the abrasive grain, dilates at least one of the unit cell dimensions of the abrasive grain, and generally improves the grinding performance of the abrasive grain.

Abstract: The invention relates to an abrasive sheet member produced from the interstitial sheet material between circular abrasive discs during converting operations. The sheet material includes at least three projecting ends separated from each other by a boundary having a radius of curvature with a center of curvature located outside the sheet member.

Abstract: Method for providing alpha alumina-based abrasive grain having metal nitride on at least a portion of the outer surface thereof. The abrasive grain can be incorporated into a variety of abrasive products including bonded abrasive, nonwoven abrasive, and coated abrasive products.

Abstract: Method for producing a cylindrical buff with an abrasive surface is disclosed. A plurality of circular buff material is stacked to form a cylindrical shape. The buff is soaked into a liquid and the liquid is frozen to harden a abrasive surface of the buff. The buff is rotated and the abrasive surface is cut by a cutting tool to smoothen the abrasive surface.Another method for producing a cylindrical buff with an abrasive surface is also disclosed. A plurality of circular buff material is stacked to form a cylindrical shape. The buff is rotated and a liquid is jetted with high speed toward the abrasive surface of said buff to smoothen the abrasive surface.

Abstract: An abrasive article produced by injection molding or the like, utilizing a thermoformable material with abrasive grit intermixed homogeneously therein.

Abstract: A mold is used to form a polishing pad, wherein the surface of the polishing side of the polishing pad is determined by a primary surface of the mold. Features along the polishing side of a polishing pad may take any one of several different shapes. Channels along the polishing side of the polishing pad allow a smaller pore size to be used. The mold allows more control over the surface of the polishing side, which in turn give more control over polishing characteristics.

Abstract: Method for providing alpha alumina-based abrasive grain having metal carbide on at least a portion of the outer surface thereof. The abrasive grain can be incorporated into a variety of abrasive products including bonded abrasive, nonwoven abrasive, and coated abrasive products.

Abstract: An abrasive article is provided which comprises a substrate having a surface bearing and abrasive layer and an opposite surface having a layer of pressure sensitive adhesive and a protective liner covering the layer of pressure sensitive adhesive. The liner includes a lift flap secured thereto which does not extend beyond the perimeter of the liner and has a free portion accessible to finger grip.

Abstract: The present invention is a polishing pad for use in chemical-mechanical planarization of semiconductor wafers, and a method for making the polishing pad. The polishing pad has a body, molecular bonding links, and abrasive particles dispersed substantially uniformly throughout the body. The body is made from a polymeric matrix material and the molecular bonding links are covalently bonded to the matrix material. Substantially all of the abrasive particles are covalently bonded to at least one molecular bonding link. The molecular bonding links securely affix the abrasive particles to the matrix material to enhance the uniformity, of the distribution of the abrasive particles throughout the pad and to substantially prevent the abrasive particles from breaking away from the pad.

Abstract: A preform element, for example for use as a cutter in a rotary drill bit, includes a facing table of polycrystalline diamond bonded to a substrate of tungsten carbide. The rear surface of the facing table is integrally formed with a plurality of protuberances which project into the substrate and are spaced apart irregularly across the rear surface of the facing table. The protuberances may differ in cross-sectional shape and/or size, and the distribution of the different sizes and/or shapes may also be irregular. The protuberances may also project into the substrate to irregularly varying depths.

Abstract: A method for making abrasive articles uses a soft, easily deformable and flexible preform having a high binder content. The binder gives the preform its integrity, and is present in greater quantity than the retaining powder. The preform can have superabrasive particles mixed therein, or added later. The preform allows even distribution of a small quantity of retaining powder for thin superabrasive articles. A porous layer may be added to the assembly for making an abrasive article, the porous layer absorbing the liquid binder, supporting the retaining powder and superabrasive particles to prevent lateral movement, and perhaps giving strength to the preform. The final assembly to be heated or sintered (preferably under pressure) for making the abrasive article, which may include any number of layers of superabrasive particles, porous layers and preforms.

Abstract: The present invention is intended to provide a cleaning sheet which is easy to handle and effective to clean a picker roller. A cleaning sheet coated with a cleaning adhesive is placed in a paper feeding cassette. A picker roller rotates thereby being cleaned with the cleaning sheet. The sheet has a certain stiffness so as not to disengage from a claw of the cassette when the picker roller rotates. The sheet is composed of a base sheet with a coat of cleaning adhesive and a releasable cover sheet. The base sheet and the releasable cover sheet are cut off by specified portions allowing for the multiple use of the sheet. A higher cleaning effect is obtained by using an adhesive containing abrasive grains as a cleaning adhesive applied onto the cleaning sheet.

Abstract: Method for providing an alpha alumina-based abrasive grain having metal boride on at least a portion of the outer surface thereof. The abrasive grain can be incorporated into a variety of abrasive products including bonded abrasive, nonwoven abrasive, and coated abrasive products.

Abstract: The present invention pertains to a process for preparing an abrasive based on corundum with a grain shape factor exceeding 0.6.

Abstract: A metal cutting insert is made by performing a sintering operation to form a substrate having a longitudinal axis and superhard abrasive bodies bonded thereto at longitudinally spaced locations. The substrate and superhard bodies are sliced-through in directions perpendicular to the axis to form inserts having superhard body portions on both side surfaces of the insert.

Abstract: Grinding tools are provided having a composite working surface with a metal bonding material coated with a modulated composition of transition metal compounds. Titanium nitride and zirconium nitride are suitable compounds. A manufacturing method for such grinding tools is also provided, employing cathodic arc deposition with transition metal compounds being formed from arcs of transition metal cathodes and a reactive gas.

Abstract: Seated abrasive articles containing particles having specified shapes. The coated abrasive comprises:a. a backing;b. at least one binder;c. an abrasive coating comprising shaped abrasive particles and diluent particles said at least one binder serving to bond the abrasive coating to the backing. The diluent particles can comprise (1) a plurality of individual abrasive particles bonded together by an adhesive to form an agglomerate, (2) a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (3) a plurality of individual abrasive particles and a plurality of individual non-abrasive particles bonded together by an adhesive to form an agglomerate, (4) individual non-abrasive particles, (5) individual abrasive particles, or (6) combinations of the foregoing.

Abstract: In accordance with the present invention, a polishing pad useful for polishing a semiconductor-comprising substrate is disclosed. The polishing pad is constructed to include conduits which pass through at least a portion of and preferably through the entire thickness of the polishing pad. The conduits, preferably tubulars, are constructed from a first material which is different from a second material used as a support matrix. The conduits are positioned within the support matrix such that the longitudinal centerline of the conduit forms an angle ranging from about 60.degree. to about 120.degree. with the working surface of the polishing pad. One preferred method of fabrication the polishing pad is pultrusion, where the tubulars are pulled through a resin bath to apply a coating of resin and then through a series of dies in which the resin is cured to provide a support matrix around the tubulars.

Abstract: The present invention provides a backing for a coated abrasive article, wherein the backing includes a tough, heat resistant, thermoplastic binder material, and an effective amount of a fibrous reinforcing material distributed throughout the thermoplastic binder material. The tough, heat resistant, thermoplastic binder material and the fibrous reinforcing material together form a hardened composition that will not substantially deform or disintegrate during use.

Abstract: A method of making a coated abrasive article and the product thereof, involving the steps of: providing an endless spliceless backing loop substrate; applying fibrous reinforcing material onto a major surface of the endless backing substrate by applying of a first binder precursor to the fibrous reinforcing material such that the first binder precursor bonds the fibrous reinforcing material to the endless backing substrate to form a reinforcing fiber layer; further solidifying the first binder precursor; and forming an abrasive coating on the surface of one of the fiber reinforcing layer, or alternatively, the exposed surface of the backing substrate.

Abstract: An abrasive is produced by crushing a cured product of a phenol resin composition into particles, and washing with water and drying the particles. The phenol resin composition may comprise as principal constituents a phenol resin and an organic filler, or a phenol resin, an organic filler and an inorganic filler.

Abstract: Abrasive media formed into shapes or packs containing a compound are disclosed. The abrasive media are formed from a synthetic resin material, and contain a compound and abrasives within the formed synthetic resin material. A method of manufacturing such abrasive media is also disclosed. The method includes providing abrasives, synthetic resin and compound in their respective specific proportions, stirring them into a uniform mixture, placing the mixture into a mold, and thermosetting the same within the mold, and then removing it from the mold.

Abstract: A template-type wafer polishing method in which a plurality of wafers are polished while they are fitted in the corresponding number of circumferentially spaced engagement holes in a template blank, with the backsides of the respective wafers held by a backing pad, wherein the backing pad has, in its one surface next to the template blank, a plurality of annular grooves each extending along a corresponding one of the engagement grooves in the template blank for relieving a stress concentrated on the peripheral edge of each wafer. The polished wafer is free from deformation, such as declination caused at the peripheral edge thereof due to stress concentration and, hence, has an extremely high degree of flatness. The backing pad and a method of making the same are also disclosed.

Abstract: A process is described for the production of alumina/zirconia materials which uses cheap scrap alumina/zirconia/silica material as feedstock along with a reducing agent to lower the final silica content to an acceptable level.

Abstract: A polishing pad comprises a carrier and layer of a non-porous thermoplastic polymer secured to a surface thereof and containing a mass of discrete abrasive particles, comprising diamond or cubic boron nitride, uniformly dispersed therein. The abrasive particles have a particle size of up to 500 microns and are present in the layer in a concentration of up to 30 volume percent. The layer presents an abrasive polishing surface. The abrasive layer may also comprise a plurality of spaced strips secured to a surface of the carrier and each strip presents an abrasive polishing surface.

Abstract: Cleaning apparatus for restoring motor vehicle wiper blades comprising a pad of spongy material having an elongate abrasive-lined groove therein. The surfaces of wiper blades can be restored by working the abrasive groove of the pad to and fro on rubberized surfaces of wiper blades. A method of manufacturing the pad is also described.

Abstract: A polycrystalline compact cutting element for use in operations that require high impact and abrasion resistance. The compact includes a substrate formed of tungsten carbide or other hard material with a diamond or cubic boron nitride layer bonded to a mounting surface on the substrate. The interface between the layers is defined by a three-dimensional topography formed with a plurality of surface irregularities in an arrangement whereby a straight line or a constant radii accurate line does not connect a series of adjacent surface irregularities.

Abstract: The present invention is directed to polycrystalline diamond and cubic boron nitride (CBN) composite compacts and a method of making the same under high temperature/high pressure (HP/HT) processing conditions, and more particularly to HP/HT polycrystalline composite compacts having reduced abrasive layer stresses. The method of the invention involves making a metal carbide supported polycrystalline composite compact under conditions of high pressure and high temperature (HP/HT) in an HP/HT apparatus by the following steps:(a) placing within an enclosure a mass of abrasive particles, a first mass of metal carbide support material adjacent said abrasive particles, and a second mass of metal carbide support material adjacent said first mass with a layer of brazing filler alloy having a liquidus above about 700.degree. C.

Abstract: A method is provided that produces grinding wheels which exhibit improved burn reduction or prevention, lower power consumption and increased penetration of metalworking fluid into the grinding zone in high metal removal rate grinding operations such as for example creep feed grinding.

Abstract: An improved ceramic corundum abrasive is achieved by addition of tin. Preparation is preferably by the sol-gel process, with further modifying components such as magnesium, lithium, cobalt, yttrium, hafnium, iron, rare earths, gamma-aluminium oxide already being present in the sol.

Abstract: The invention relates to an improved blasting media which has a lattice fiber structure which is used as a carrier for other desired components. Desired abrasive component(s), polishing component(s) and/or absorptive component(s) are attached to the strands of the carrier components in order to form a plurality of individual, discrete granules which are readily propellable by conventional blasting equipment against the surface to be treated. The latticed fiber carrier component has improved integrity over prior art media carriers as it is not prone to readily break down during use and thereby facilitates regeneration of the blasting media once the effectiveness of the media has been substantially reduced.

Abstract: A method for making a spirally wound endless coated abrasive belt comprising an abrasive layer bonded to a backing laminate material comprising a flexible support and a hot-melt adhesive layer.

Abstract: An abrasive cleaning ball (1) is made of a mass of sponge rubber filled with abrasive grains (2) intimately mixed within the mass. The grains are constituted by short lengths of a wire made of an abrasive material that is polygonal in section, preferably square in section, and coated on its side surfaces with dried adhesive.

Abstract: A method of producing an abrasive compact, particularly a diamond abrasive compact, is provided. The method uses conventional compact manufacture conditions and is characterized by the mass of abrasive particles which is used. This mass has an average particle size of less than 20 and consists of particles having at least three different average particle sizes.

Abstract: The subject of the invention is a process for the production of grinding tools which have a basic body carrying an abrasive coating. The abrasive coating has hard-material grains, such as diamond grains, which are held in a bond. In order to simplify the production process, provision is made, after the abrasive coating (8) has been applied to the basic body (2), for the tool (1), vacuum-packaged in a foil (10), to be hot-pressed isostatically in an autoclave. This avoids the need to use special hardened or ground press molds made of high-quality material steels.

Abstract: A twisted stem helical internal abrading and finishing tool is formed from abrasive containing plastic strips having transverse offset slits along the lateral edges and a longitudinal middle unslit portion. The strips may be stacked with the longitudinal middle unslit portions aligned with the longitudinal axis of a cotter pin, one end of the stack being placed in the bight of the cotter pin. The cotter pin is twisted about its longitudinal axis to form a helical twisted stem from which the slit lateral side or edges extend forming rectangular abrasive fingers uniformly helically arranged. The end of the cotter pin opposite the bight may be inserted into the chuck of a drilling or turning machine to hold and rotate the tool about the axis of the stem.

Abstract: A method for integrally applying a rough surface to the grooves of paper pulp refiner plates which involves placing the pattern for the plate into a mold and then applying to the desired surfaces of the pattern a mixture including a selected kind of ceramic particles with silica sand, additives and a binder system. The mold is then packed with conventional molding sand. The pattern is removed from the mold and superheated refiner plate base metal is introduced into the mold resulting in penetration of the voids around the particles and adherence of the particles to the surfaces selected by the application of the mixture. Surfaces desired to be smooth may be treated after the pattern is removed from the mold and before pouring by treating the desired surfaces with coating to accomplish that purpose. Ceramic particles used include alumina, silica, zirconia, silicon carbide, tungsten carbide, vanadium carbide and niobium carbide. These have the angularity to create the required voids to fill with molten metal.

Abstract: An abrasive article comprising a binder and abrasive grits, wherein the abrasive grits comprise abrasive particles having specified shapes. Coated abrasive articles of this invention comprise a backing having at least one layer of abrasive material adhered thereto by means of a binder. A portion of this layer contains abrasive particles having specified shapes. It is preferred that the geometric shape of these abrasive particles be triangular. For triangular-shaped particles, about 35% to about 65% of the particles are oriented with a vertex pointing away from the backing and a base in contact with the binder, with about 35% to about 65% of the particles being oriented with a base pointing away from the backing and a vertex in contact with the binder.