摘要:
A method of improving the reflectivity of a surface of an internal combustion engine, the internal combustion engine having a cylindrical or non-cylindrical internal wall of an internal combustion chamber in which one or more pistons move and in which combustion occurs, the method comprising polishing a surface of the internal combustion chamber, said surface during use of the internal combustion engine exposed to combustion, said polishing effective to increase a reflectivity of the surface. The surface may include a first zone not traversed by the one or more pistons and polished in a first manner (pressure, time, electrical current density or voltage) to yield a first reflectivity and a second zone traversed by the one or more pistons polished in a different manner and yielding a second reflectivity.
摘要:
The present invention provides an apparatus and a method for polishing a substrate having a film formed thereon. The method includes: rotating a polishing table supporting a polishing pad by a table motor; pressing the substrate against the polishing pad by a top ring; obtaining a signal containing a thickness information of the film; producing from the signal a polishing index value that varies in accordance with a thickness of the film; monitoring a torque current value of the table motor and the polishing index value; and determining a polishing end point based on a point of time when the torque current value has reached a predetermined threshold value or a point of time when a predetermined distinctive point of the polishing index value has appeared, whichever comes first.
摘要:
A gear housing for a bevel gear having a surface which is made up of sections and attachment faces. The sections are convexly curved along at least one surface curve.
摘要:
Methods and apparatus are provided for polishing a notch of a substrate using a polishing tape. In some embodiments, a polishing head may be provided that is adapted to apply the polishing tape against the notch of the substrate, including: a polishing pad having a cavity adapted to be filled with a pressure-controlled medium; and a tip region having a shape that corresponds to a shape of the notch, wherein the polishing pad is adapted to contact the polishing tape and press the polishing tape against the notch. Numerous other aspects are provided.
摘要:
Method for promoting nucleate boiling on an interior surface of a vessel for boiling fluid in an industrial process, the method comprising the steps of: providing the vessel having the interior surface; controllably depositing a scale layer having a non-zero thickness onto the interior surface; monitoring an average thickness, x, of the deposit of the layer; and maintaining the average thickness, x, of the layer below a predetermined value or within a predetermined range of values during the operational life of the vessel, wherein x
摘要:
To provide a high-frequency-vibration-assisted electrolytic grinding method and a device therefor in which micro abrasive grains can be used so as to improve the grinding accuracy and efficiency. A high-frequency-vibration-assisted electrolytic grinding method in which a work is grinded by a grinding stone while electrolytic reaction is performed by applying a voltage between the grinding stone and the work through an electrolytic solution and high-frequency vibration is transmitted to the grinding stone or the work wherein; the grinding stone has non-conductive micro abrasive grains with grain sizes of less than #400 in accordance with the JIS R6001 standard of grinding stones for precision polishing projecting from its surface formed of conductive binding material, and the distance between the grinding stone and the work, which is regulated by the projecting lengths of the micro abrasive grains from the base of the grinding stone, is set to less than 0.02 mm.
摘要:
The invention relates to a spindle (1) for a machine tool, in particular a motor spindle, with a housing (2) for accommodating an electric motor (3) and a shaft (4) that can be driven by the latter, and with a tool holder (5) for a tool (6) that can be electrically connected, wherein a draw rod (7) is provided for actuating the tool holder (5) of the spindle (1) and wherein the draw rod (7) has a current conductor (8) for supplying current to a held tool (6).
摘要:
A method and apparatus for removing conductive material from a microelectronic substrate. In one embodiment, a support member supports a microelectronic substrate relative to a material removal medium, which can include first and second electrodes and a polishing pad. One or more electrolytes are disposed between the electrodes and the microelectronic substrate to electrically link the electrodes to the microelectronic substrate. The electrodes are then coupled to a source of varying current that electrically removes the conductive material from the substrate. The microelectronic substrate and/or the electrodes can be moved relative to each other to position the electrodes relative to a selected portion of the microelectronic substrate, and/or to polish the microelectronic substrate. The material removal medium can remove gas formed during the process from the microelectronic substrate and/or the electrodes. The medium can also have different first and second electrical characteristics to provide different levels of electrical coupling to different regions of the microelectronic substrate.
摘要:
A razor blade sharpener utilising the principles of an electrochemical cell. The blade (10) forms an anode (−) and a cathodic plate (16) is provided in close proximity to the razor edge (12) to be sharpened. The present invention electrochemically sharpens the edge (12) of the blade tip (14) to provide a fresh, or “as new” razor blade. The blade sharpener has additional uses for sharpening, for example, kitchen knifes and surgical blades.
摘要:
A mirror surface grinding method processes an optical glass material into a lens shape using a cup-shaped grinding stone. The grinding stone is pupplied with a polishing solution which contains charged fine particles, thereby electrically attaching the charged fine particles to the grinding stone. The grinding stone is rotated and moved relative to the optical glass material along a final shape to be generated from the optical glass material, thereby grinding an unnecessary portion of the optical glass material to remove it, using a peripheral face portion of the grinding stone, and at the same time polishing the final shape surface of the optical glass material using charged fine particles attached to an annular face portion of the rotating and moving grinding stone.