Abstract:
PROBLEM TO BE SOLVED: To dispense with attaching/detaching of a mask to/from a workpiece and a washing process in blasting using a fine powder polishing material. SOLUTION: A main cover 20 and an opposed cover 40 which have openings 22 and 42 allowing at least one side edges thereof in the same direction as a moving direction of the workpiece W to face each other via a moving allowing space between planar workpieces W to be working objects, are arranged to face each other in a vertical direction. The fine powder polishing material is injected by a blast gun 30 arranged with an injection hole 31 in the main cover 20. The planar workpiece W is relatively moved in a moving direction T in relation to the injection hole 31. The fine powder polishing material and cut chips injected from a space in the main cover 20 are sucked and recovered via main cover suction pipes 21a, 21b communicated with a space in the main cover 20. The fine powder polishing material and cut chips in the main cover 20 are sucked by an opposed cover suction pipe 41 communicated with a space in the opposed cover 40 via the space in the opposed cover 40. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure tank of a direct pressure type blasting device capable of preventing a larger amount of an abrasive than that in a normal state from being injected immediately after the start of operation of the blasting device. SOLUTION: A discharge path 18 communicating with a storing space 13 in a pressure tank body 10 at a lower place than a lower limit position LL for storing the abrasive, a filter 5 for preventing the discharge of the abrasive through the discharge path 18, and an opening/closing means (an opening/closing valve 19 in an embodiment) of the discharge path 18 are arranged at the pressure tank 1 of the direct pressure type blasting device. Discharge of compressed air in the pressure tank body 10 is carried out through the discharge path 18. When compressed air is reintroduced into the storing space 13 of the pressure tank body 10 after the discharge through the discharge path 18, the introduction of the compressed air is carried out through an initial pressure pipe 60 communicating with the storing space 13 in the pressure tank body 10 at the lower place than a lower limit position LL for storing the abrasive during a predetermined time period of an initial introduction. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a printing intagliated plate, in which a protuberant part formed at the edge of a recess in the formation of the recess by irradiating the surface of a metal plate with a laser beam can be removed without roughening the surface except the recesses of the metal plate nor shaving off nor chipping the edge of the recesses. SOLUTION: Abrasives formed by mixing an organic polymer with abrasive grains are jetted to the plane of the metal plate 11, on which the recesses 13 are formed, with an incident angle of 1-15°. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a metal mask for screen printing free from dross produced by boring by laser light without causing any warpage and strain on the mask. SOLUTION: The method comprises a boring process to form holes in a metal plate by melting the metal plate at positions illuminated by laser light and an abrasive material spraying process to spray an abrasive material to the other surface of the metal plate after forming holes, wherein the abrasive spraying process sprays a prescribed flat-shaped abrasive material (plate-like abrasive) having flat surfaces or an elastically-deformable abrasive material (elastic abrasive) dispersing or carrying abrasive particles of mean grain size of 1 mm-0.1 μm at an incident angle of 80° or less to the other surface of the metal plate at a spraying pressure of 0.01-0.7 MPa or spraying rate of 5-150 m/sec while sliding the spraying along the other surface of the metal plate. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide polishing material for blasting and blasting method, which makes a surface into a glossed surface, polishes and makes the surface into a mirror surface without making the surface into a satin-finished surface, and removes surface ruggedness. SOLUTION: In this blasting method, the polishing material formed into a planar shape having a plane, having the maximum dimension (plate diameter) in the plane shape in the range of 0.05-10 mm and also having the plate diameter of 1.5 to 100 times as many as thickness, is injected by inclining an incident angle to the surface of a workpiece. In this case, the injected planar polishing material slides on the surface of the workpiece, while bringing the plane into sliding contact with the surface of workpiece. As a result, the surface of the workpiece is flattened by removing only crest parts without increasing depths of trough parts in a rough curve. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a continuous supplying method of a grinding and cleaning material capable of being continuously jetted in a direct pressure type blasting device. SOLUTION: In this direct pressure type blasting device, a grinding and cleaning material tank 2 is constituted of three steps of a recovery tank 21, a spare tank 22 and a grinding and cleaning material force-feeding tank 23. In a closed state in a space between the spare tank 22 and the grinding and cleaning material force-feeding tank 23, the grinding and cleaning material recovered by communicating in a space between the recovery tank 21 and the spare tank 22 is introduced into the spare tank 22. A space between the recovery tank 21 and the spare tank 22 is closed, and pressure in the spare tank 22 is increased to the same pressure as that in the grinding and cleaning material force-feeding tank 23. Subsequently, a space between the spare tank 22 and the grinding and cleaning material force-feeding tank 23 is communicated, and the grinding and cleaning material is introduced into the grinding and cleaning material force-feeding tank 23. As a result, pressure drop in the grinding and cleaning material force-feeding tank 23 in a pressurized state is prevented when jetting the grinding and cleaning material to enable the continuous jetting. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a mechanochemical polishing/grinding method which can accomplish improvement in polishing and grinding speed to a workpiece, suppression of generation of microcracks and improvement in surface roughness simultaneously. SOLUTION: In blast working, in which the workpiece is polished and ground by jetting compressed gas and a granular material to the workpiece, the reactive granular material which have reactivity (mechanochemical reaction) to the workpiece and contain reactive components to generate mechanically fragile product in reaction with the workpiece are jetted as the granular material. COPYRIGHT: (C)2005,JPO&NCIPI