Abstract: System for reduction of dimensional end-taper in abrasive blasted tubes has a pressurized chamber maintaining higher air pressure inside the chamber than atmospheric pressure, an air-exit port allowing gases to exit the chamber at a controlled rate, a valve restricting passage of gases from the air-exit port, a pressurized membrane through which the tube passes creating a seal, a gauge port where pressure inside the pressurized chamber is monitored and a media-exit port allowing evacuation of abrasive blast media particles after being expelled from the exit-end of the tube. The system addresses dimensional end-taper as high back pressure at the exit end of the tube reduces velocity of the gases and abrasive particles carried in it, thereby reducing erosion of the inner walls of the tube near its exit end. The system can be employed with a wide range of tube sizes and in combination with several abrasive blasting techniques.

Abstract: Provided is a multi-functional rubbing and separating device, comprising a main body, a rotating axle and lapping blades; wherein a feeding port is disposed on one end of the main body and a discharge port is disposed on another end; the rotating axle and lapping blades are disposed inside said main body; the lapping blades are distributed on outer cylindrical surface of the rotating axle; and multiple through-holes are disposed on an sidewall of the main body. The multi-functional rubbing and separating device herein is added between a flotation tank and a washing tank, which can effectively improve the washing quality for waste plastics, thereby separating waste plastics and impurities more thoroughly and improving the quality of recycled products.

Abstract: Polishing and cleaning techniques are combinatorially processed and evaluated. A polishing system can include a reactor assembly having multiple reaction chambers, with at least a reaction chamber including a rotatable polishing head, slurry and chemical distribution, chemical and water rinse, and slurry and fluid removal. Different downward forces can be applied to the polishing heads for evaluating optimum process conditions. Channels in the polishing pads can redistribute slurry and chemical to the polishing area.

Abstract: The present disclosure involves various embodiments for finishing the internal wall of a capillary tube. A quantity of abrasive particles and a rod are placed in a capillary tube, wherein a portion of the abrasive particles is magnetic. A magnet is positioned near a side of the capillary tube, thereby attracting the abrasive particles toward an internal wall of the capillary tube. A relative rotation of the capillary tube is produced with respect to the magnet, thereby causing the abrasive particles to finish the internal wall of the capillary tube.

Abstract: A game ball surface treatment apparatus for abrading, cleaning or polishing game balls includes an outer housing having a base portion and a side wall portion, an inner housing arranged within the outer housing and having a bottom portion and a circumferential wall portion extending upwards from the bottom portion, a damper arranged to interconnect the outer housing and the inner housing, an electric motor fixed to the bottom portion of the inner housing and having an output shaft extending upwards, a rotary disc fixed to the output shaft of the electric motor to support the game balls and provided with an abrading fabric making contact with the game balls, an impeller arranged above the rotary disc to accommodate the game balls in a mutually isolated state, and a lining attached to the circumferential wall portion of the inner housing to make contact with the game balls.

Abstract: A magnetic particle carrying device includes a magnetic field generator and a hollow cylindrical structure. The magnetic field generator generates a magnetic field. The hollow cylindrical structure encases the magnetic field generator and attracts magnetic particles on an external surface of the hollow structure using the magnetic field. The external surface of the hollow cylindrical structure is provided with a plurality of elliptical depressions. The depressions include first type depressions and second type depressions. A long axis of a first type of elliptical depression is substantially extending in an axial direction of the hollow cylindrical structure, and a long axis of a second type of elliptical depression is substantially extending in a circumferential direction of the hollow cylindrical structure. The external surface of the hollow cylindrical structure has more elliptical depressions of the second type than elliptical depressions of the first type.

Abstract: An arena cleaning machine includes cleaning members, such as pads or brushes supported on a carriage that provides stability to the cleaning members and situates them in a position to contact the surface of ice rink dasher boards. The cleaning members are moveable into a desired cleaning position by adjusting their position along the carriage. A driver of the machine can make several passes around the rink, cleaning successive strips on the dasher boards.

Abstract: A game ball surface treatment apparatus for abrading, cleaning or polishing game balls includes an outer housing having a base portion and a side wall portion, an inner housing arranged within the outer housing and having a bottom portion and a circumferential wall portion extending upwards from the bottom portion, a damper arranged to interconnect the outer housing and the inner housing, an electric motor fixed to the bottom portion of the inner housing and having an output shaft extending upwards, a rotary disc fixed to the output shaft of the electric motor to support the game balls and provided with an abrading fabric making contact with the game balls, an impeller arranged above the rotary disc to accommodate the game balls in a mutually isolated state, and a lining attached to the circumferential wall portion of the inner housing to make contact with the game balls.

Abstract: Apparatus for removing remnants of debris from the exterior surface of cores includes an assembly moveable from a position spaced from the exterior surface of the cores to a position adjacent the exterior surface. One or more abrasion belts are looped around rotatable shafts which move the belts to abrade the exterior surface of the cores.

Abstract: An apparatus for cleaning an emitter electrode in electrohydrodynamic fluid accelerator and precipitator devices via movement of a cleaning device including granular abrasives positioned to frictionally engage the emitter electrode. The cleaning device causes the granular abrasives to travel along a longitudinal extent of the emitter electrode to remove detrimental material accumulated on the electrode. The granular abrasives can be retained in housing, on opposed cleaning surfaces, and can be compressed by the housing or an applied force to abrade detrimental material from the electrode surface.

Abstract: An apparatus for producing stress on a surface, comprising one or more service assembly and one or more cleaning assembly. The service assembly comprises one or more means for applying dirt to said surface, or one or more means for scuffing said surface, or one or more means for dragging a test material across said surface, or a combination thereof. The cleaning assembly comprises one or more scrubber, or one or more burnisher, or a combination thereof. Also provided is a method of testing a surface with such an apparatus.

Abstract: A soluble abrasive is used to lap workpieces to overcome the problem of embedding and retaining abrasive particles in the workpieces. The soluble abrasives are dissolved from the workpiece even if they become embedded in the workpiece. For example, the abrasives may be dissolved with water and comprise ionic salts. The soluble abrasive has a hardness that is equal to or slightly greater than the hardness of the metal being lapped.

Abstract: A polishing apparatus and method for polishing semiconductor wafers uses multiple load-unload stations and at least one turn-over robotic wafer handing device to process the wafers so that the wafer can be polished at multiple polishing tables. The turn-over robotic wafer handing device operates to turn over the wafers so that one side of the wafers can be polished at a first polishing table and the other side of the wafers can then be polished at a second polishing table.

Abstract: In the method for locating flaws on the surface of a three-dimensional object the flaws are detected and located using one or more optical image-taking device. When a picture is taken showing a flaw the location of the flaw on the object is determined with great accuracy from the design data for the object, the optical imaging properties of the optical image-taking device, and the positions of the optical image-taking device and the object. A marking system for marking the position of the flaws on the object, which are detected by the method, is also described, which includes plural marking heads and displacement devices for positioning and/or activating the marking heads independently of each other.

Abstract: A polishing pad (104) having an annular polishing track (122) and including a plurality of grooves (148) that each traverse the polishing track. Each groove includes a plurality of flow control segments (CS1–CS3) and at least two discontinuities in slope (D1, D2) located within the polishing track.

Abstract: A method of magnetic-abrasive machining of parts has the steps of supporting a part, generating a magnetic field by magnetic means located at one side of the part, placing a magnetic-abrasive powder on a surface located at another, opposite side of the part, so that the magnetic-abrasive powder is attracted by the magnetic means and pressed to the surface of the part, and providing a relative movement of the parts and the magnetic abrasive powder retained by the magnetic means relative to one another so as to machine the surface of the part which is therefore open for observation and supply of the magnetic abrasive powder; and an apparatus is proposed as well.

Abstract: A microelectronic substrate and method for removing conductive material from a microelectronic substrate. In one embodiment, the microelectronic substrate includes a conductive or semiconductive material with a recess having an initially sharp corner at the surface of the conductive material. The corner can be blunted or rounded, for example, by applying a voltage to an electrode in fluid communication with an electrolytic fluid disposed adjacent to the corner. Electrical current flowing through the corner from the electrode can oxidize the conductive material at the corner, and the oxidized material can be removed with a chemical etch process.

Abstract: A system and method for treating (e.g. polishing to remove defects) the surface of a media, such as a magnetic hard disk, while in operation, such as during dynamic electrical testing is disclosed. Further, a method for manufacturing a head for treating the surface of a media is disclosed.

Abstract: In a cylindrical grinding machine, a lateral surrounding cover is mounted on a bed and surrounds and covers lateral surfaces of a machining area in which a work support drive device, a grinding wheel and a bearing unit therefor are arranged and a slide area in which a base portion of a wheel head and a slide mechanism for the wheel head are arranged. A top open/close cover is further provided on the top portion of the lateral surrounding cover and is movable between a first position to open the upsides of the machining area and the slide area and a second position to cover the upsides of the machining area and the slide area. Thus, only by moving the top open/close cover to the first position, it becomes possible for an operator to look over the whole part of the machining area and the slide area. Since plural components of the grinding machine can be checked simultaneously with the top open/close cover opened, the time taken for maintenance or service work on the grinding machine can be shortened.

Abstract: The present invention relates to an abrading tool having a rotatable body of revolution having an axis of rotation. A peripheral workface is fixedly attached to the body of revolution. The workface is formed by a plurality of discrete, geometrically-shaped segments disposed in a contiguous relationship. Lines-of-juncture are formed by opposed edges of adjacent segments, whereby any diametrical plane, having at least one coplanar line-of-juncture, has a discontinuous coplanar curve, at least a portion thereof being the at least one coplanar line-of juncture, and whereby any longitudinal plane, having at least two coplanar lines-of-juncture, has opposed ends of the at least two coplanar lines-of-juncture being spaced apart.

Abstract: The invention relates to a method for protecting an underwater surface (3) against pollution due to fouling, in particular a metal surface, upon which a coating (4) is applied, whereby the coating (4), in the presence of water, is brushed or polished smooth with at least one brush (8) having brushes (9) made of synthetic material in which a grinding agent (10) is embedded. In the coating (4), glass flakes (5) are embedded to which silver is bonded.

Abstract: The present invention discloses a process for cleaning oxides, slurry, dirt, impurities, organics and volatile matter, rust and other scales from substrates. This cleaning and surface preparation action is affected by abrasion, shaving or dry machining of the substrate material as caused by dry magnetic abrasive particles, either in powder or granule form, which engage the substrate material in a magnetic field. The passage of input current through a motor generates a magnetic field, which creates a “coupling” between two surfaces, the driving (stator) surface and the driven (rotor) surface. The magnetic coupling between the surfaces is provided by stiffening of the particles, which allows the mechanical abrasion that is necessary for the cleaning action on the substrate.

Abstract: An apparatus and method for removing surface coating of an article carrying jig so as to enable electrical contact between the jig and the or each article to enable the articles to be coated with surface coating in a treatment chamber wherein the surface coating on the jig is removed by subjecting the jig and article to vibration so that the resulting movement between the articles and the jig abrades the surface coating on the jig hence enabling electrical contact between the jig and the articles.

Abstract: The present invention provides a method of removing a coating film from the surface of a coated product, which method includes supplying an abrasive onto the surface of a coating film, pressing the abrasive to the surface of a coating film with a press surface of a press element to crush the coating film into a crushed coating film, and removing the abrasive and the crushed coating film, and a method of removing a coating film from the surface of a coated product using a jig for pressing an abrasive onto a coating film with a press element, and crushing the coating film, wherein the jig contains a jig base and plural press elements, and the press element is connected to the jig base such that the press element can be at least displaced to elastically approach or leave the jig base.

Abstract: A coin cleaning and grinding apparatus includes a conveyor for conveying coins, two drive rollers of urethane sponge having a urethane hardness between 70 and 90 degrees, and a pair of primary grinding rollers and a pair of secondary grinding rollers of urethane sponge. The primary grinding rollers are supported rotatably and downstream from the conveyor. One of the primary grinding rollers is positioned lower than the other. The lower primary grinding roller is in compressive contact with the higher primary grinding roller and one of the drive rollers. The secondary grinding rollers are supported rotatably and downstream from the primary grinding rollers. One of the secondary grinding rollers is positioned lower than the other. The lower secondary grinding roller is in compressive contact with the higher secondary grinding roller and the other drive roller. A sprinkling plate is positioned at an angle above the grinding rollers.

Abstract: An apparatus and method for abrasive flow machining the orifice of a workpiece by using an abrasive media whereby the apparatus may accommodate abrasive media having a range of viscosities by modifying the diameters of pistons and cylinders in positive displacement pumps within the apparatus.

Abstract: A system for abrasively cleaning small parts, and a container for holding small parts undergoing abrasive cleaning. An abrasive cleaning cabinet has a bottom member and a cover hingedly connected to the bottom member. The cover is pivotable between a closed position in which the cover is closed against the bottom member to define a cleaning chamber therewithin and an open position permitting access into the cleaning chamber. The cover has a viewing window and a pair of arm apertures through it, with a glove attached to each arm aperture and extending into the cleaning chamber to permit insertion of a person's hands through the arm apertures and into the gloves in the cleaning chamber.

Abstract: A magnetic wiper for removing magnetorheological fluid from a carrier surface includes a horseshoe magnet having north and south polepieces elongated in a first direction orthogonal to a second direction of magnetic flux in the magnet. The polepieces are generally parallel at their free ends in the first direction and are preferably arcuate such that the inner polepiece forms a trough for receiving magnetorheological fluid removed from the carrier surface and conveying it to an exit tube. The free ends are shaped to conform closely to the shape of the carrier surface, forming a narrow gap therebetween containing a magnetic fringing field extending beyond the free ends.

Abstract: There are disclosed a polishing method and a polishing device in which cleaning of a glass substrate surface can be achieved to a high level. A glass substrate (MD substrate 1) in the shape of a circular disc having a circular hole in a center portion is immersed in an abrasive liquid 50 containing free abrasive grains, and an inner peripheral end surface of the glass substrate is polished using the abrasive liquid containing the free abrasive grains by rotating a rotary brush 4 or a polishing pad in contact with the inner peripheral end surface.

Abstract: The surface of a workpiece is treated by discharging a stream of pliant shot in a carrier fluid at a shallow angle of incidence thereagainst. The shot is then scrubbed laterally along the surface for selectively removing target material therefrom.

Abstract: A process for surface treating the surface of petrous materials comprises applying friction to the surface to be treated by means of brush bristles which produce progressive erosion of the surface wherein the erosion is of greater depth in zones of lesser hardness. The process removes parts of lesser consistency from the surface. The process is performed without chemical treatment, sand blasting or the application of fire to texture and may be performed in the presence of water.

Abstract: Magnetic-abrasive machining of a parts is performed by generating a magnetic field by two different poles located near one another so as to form a magnetic gradient region with magnetic flux lines which extend from one pole in one direction and then in an opposite direction to another pole and therefore are round in a predetermined plane, placing a part to be machined exclusively at one side of the two poles, introducing a magnetic-abrasive powder between the poles and the part to be machined so that a portion of the part to be machined is located in the magnetic gradient region with the round magnetic flux lines, and moving the part to be machined relative to the poles in the same plane transversely to the round magnetic flux lines of the magnetic gradient region so that portions of the part to be machined successively pass the magnetic gradient region with the round magnetic flux lines and are machined by the magnetic-abrasive powder retained in the magnetic gradient region with the round magnetic flux line

Abstract: A motor vehicle clutch has a friction wheel which includes a support disc, on which friction liners are attached by adhesive bonding to selected zones of the opposed faces of the support disc. These zones are prepared for application of the adhesive by subjecting them to selective scouring in which a liquid scouring agent is applied locally at selected points on each zone.

Abstract: A workpiece cleaning mill that is useful for cleaning castings includes a hollow housing that is established by arranging plural elongated manganese flights side-by-side to establish a cylinder, and attaching the flights to opposed entrance and exit rings. A feed conveyor feeds workpieces into the entrance end, and an exit conveyor conveys the workpieces away from the exit end. Media throwers are disposed at each end to throw high-speed cleansing media, such as shot, into the housing. The housing is rotated as the workpieces move, under the influence of gravity and/or following workpieces being fed into the housing, from the entrance end to the exit end while being bombarded with shot. Steel mesh curtains at each end block the media from passing outside of the mill. Spent media falls through perforations in the flights, and the spent media is conveyed back to a media hopper and thence to the media throwers for reuse. Magnetic valves regulate the amount of media thrown by the throwers.

Abstract: The plastic flexible grinding stone according to the present invention comprises a plastic flexible material having mixed therewith a powder synthetic detergent and an abrasive such as silica sand and calcium carbonate composed of grains from 3 to 50 .mu.m in diameter, and is capable of removing simultaneously minute protrusions and stain from coated surfaces such as of rolling stocks.

Abstract: A marking apparatus for forming scratch marks on a painted surface, at positions in which paint defects are detected, includes a rotary brush assembly having a number of strings, each of which contains approximately 25 weight percent of abrasive grains, stuck in and secured to a rotary body so as to form a circular brush head. A pressing device presses the rotary brush assembly against the painted surface with a regulated thrust force so as to form a circular scratch mark on the painted surface at a predetermined level of visual distinguishability.

Abstract: An apparatus to remove adhering material from the surfaces of sand to recycle the sand is disclosed. The apparatus includes a container (13) to hold sand (S) to be processed, the container having a bottom opening; pressing means (17-20) to press the sand in the container downwards; a rotor (10) disposed under the bottom opening of the container (13), the rotor (10) having a surface (11) that contacts the sand in the container; means (2) for driving the rotor (10); and a gap (G) disposed near a place between the container and the rotor. The sand contacts and is abraded by the rotary surface (11 ) of the rotor (10), and the processed sand is discharged by the centrifugal force of the rotor (10) from the gap (G) onto a chute (21).

Abstract: The plastic flexible grinding stone according to the present invention comprises a plastic flexible material having mixed therewith a powder synthetic detergent and an abrasive such as silica sand and calcium carbonate composed of grains from 3 to 50 .mu.m in diameter, and is capable of simultaneously removing minute protrusions and stain from coated surfaces such as of rolling stocks.