摘要:
Disclosed is a semiconductor wafer polishing method for polishing the surfaces to be polished of semiconductor wafers by use of polishing pads (16, 17) provided on fixing plates by relative movement of the polishing pads and the semiconductor wafers held by carriers. The shaping surfaces (25) of a polishing pad shaping jig (21) are shaped by inverting, with respect to ideal shapes, the shapes of the surfaces to be polished of each semiconductor wafer when the surfaces are polished by use of the polishing pads (16, 17) before shaping, and the shapes of the shaping surfaces of the polishing pad shaping jig are transferred to the pad surfaces (16A and 17A) of the respective polishing pads (16, 17). The surfaces to be polished of each semiconductor wafer are polished by use of the pad surfaces.
摘要:
A polishing pad shape measured by a polishing pad shape measuring apparatus is modified into a target shape of a polishing pad by using a dressing tool so that a wafer has a desired surface shape. The invention is a method for shape modification of a polishing pad 14 for polishing a workpiece into a desired surface shape, comprising: a measurement step S9 of measuring a polishing pad shape in a state of being attached to a plate 12 by using a polishing pad shape measuring apparatus 10; a condition determination step S10 of selecting a dressing recipe capable of polishing the workpiece into a desired surface shape from a plurality of pre-provided dressing recipes based on the measurement result in the measurement step S9; and a shape modification step S11 of dressing the polishing pad 14 by using the dressing recipe determined in the condition determination step S10.
摘要:
In a method of manufacturing semiconductor wafers, front and hack surfaces of the semiconductor wafers are simultaneously polished with a double-side polishing machine that includes: a carrier for accommodating the semiconductor wafer; and an upper press platen and a lower press platen for sandwiching the carrier. The method includes: accommodating the semiconductor wafer in the carrier while a thickness of the semiconductor wafer is set to be larger than a thickness of the carrier by 0 μm to 5 μm; and polishing the semiconductor wafer while feeding a polishing slurry to between the surfaces of the semiconductor wafer and surfaces of the press platens. In the polishing, an allowance of both surfaces of the semiconductor wafer is set at 5 μm or less in total.
摘要:
A resin-made shock absorbing member for a vehicle used as a bumper bean of the vehicle and the like and the method for producing the same. The resin-made shock absorbing member for the vehicle is structured to include an elongated curved portion (20) having a hollow portion, and an attachment portion (30) for fixing to a vehicle body (11) to be united and thus continuously formed with the curved portion (20) at both ends in the longitudinal direction of the curved portion (20). By structuring the attachment portions (30) to have a hollow portion and a solid portion, at least extending in the longitudinal direction of the curved portion (20), attachment work can be carried out from the outer side of the vehicle, and the shock absorbing function can be ensured along the whole length of the member (10).
摘要:
In specific magnetic resonance imaging, magnetization spins are repeatedly excited by excitation pulses, and echoes are repeatedly generated after each of the excitation pulses. The echoes so generated are acquired as echo signals. Based on these echo signals, image data is reconstructed. According to the present invention, the number of times the magnetization spins are excited by the excitation pulses is input by an operator and, based on this input number, the number of echoes generated by one excitation is determined. Image-pickup time can easily be computed on the basis of the number of times of excitation and the time required for repeating fixed excitation pulses. The operator is able to easily control the image-pickup time by controlling the input number of times of excitation.
摘要:
The present invention relates to a joining method, a joining apparatus and a joining agent capable of joining two bodies to be jointed in a large size or in a complicated shape in a good joining condition. Specially, the present invention is to provide an improvement in a control of the current supplying method applicable for the electrically heating of the ceramic bodies or a joining agent in an electric conduction (a elecrode switching type due to a plurality of fixed electrodes and a switching control type between two kinds of the electric power sources), a control method of a auxiliary heating, a control of the holding apparatus (the control by the free thermal expansion at the pre-heating, a adaption of a balance mechanism and a measurement of the displacement), the adjustment of the shape at the butted portion (improvement of the pipe joint structure) and a joining agent superior in the joining strength.
摘要:
An apparatus for automatically feeding and packing surimi of fish or shellfish, including a feed hopper having a top inlet for feeding the surimi therefrom and a bottom outlet for discharging the surimi therefrom. A screw feeder connected to the bottom outlet of the fed hopper has two screws for passing the surimi through the screw feeder. A feed pump feeds a predetermined quantity of the surimi flowing out from an exit of the screw feeder in which the predetermined quantity of the surimi is formed into a desired shape by a forming tube. A wrapping tube forming device forms a plastic film into a continuous wrapping tube to be packed with the surimi.
摘要:
A gas shielded arc welding torch is described which uses a consumable electrode wire. A cylindrical support member carries a guide tube for guiding the electrode wire through the torch. An electrical contact member is pivotably mounted at the end of the torch and includes a bore through which the wire passes. A spring biases the contact member into constant engagement with the electrode wire. A gas nozzle is mounted on the cylindrical support member and is movable with the contact member to provide a uniform, constant-dimensioned shielding gas passage around the contact member regardless of the movement thereof.