Abstract: Provided is a reduction gear comprising a bearing state detection device capable of detecting the state of a rolling bearing that rotates integrally with an output shaft and an output gear during power transmission. The bearing state detection device comprises: a plurality of displacement sensors (1, 2, 11, 12), which are disposed in mutually differing positions at the sides of output gears (26, 27) having helical threads (35a, 37a) formed in the outer peripheral surfaces, and which detect the amount of axial displacement of the side surfaces of the output gears; and a processing unit (5), which determines the amount of tilt of the gears (26, 27) on the basis of the amount of displacement detected by the plurality of displacement sensors (1, 2, 11, 12) during rotation of the output gears (26, 27) when the output gears are linked to an output shaft (25) by a linking mechanism (32).
Abstract: A cold-heat power generation device includes a thermal power generation device, a CAES power generation device, and an output merging part. A facility includes an LNG vaporizer, a motive power part that burns natural gas vaporized by the LNG vaporizer to convert the natural gas into motive power, and a primary generator that is driven by the motive power part. A facility includes an air compressor that compresses air cooled by the LNG vaporizer, an air tank that stores compressed air discharged from the air compressor, air heaters that heat the compressed air supplied from the air tank with heat generated when the natural gas is burned in the motive power part, an air expander that expands the compressed air heated by the air heaters, and a secondary generator that is driven by the air expander. At the output merging part, output of the primary generator and output of the secondary generator are merged with each other.
Abstract: A method for producing an additively manufactured object includes melting and solidifying a filler metal to form weld beads and depositing the weld beads adjoining each other, thereby forming a weld-bead layer, and repeatedly depositing a next weld-bead layer on the formed weld-bead layer to conduct additive manufacturing. The method includes a bead formation step of forming a new weld bead so as to fill a recess formed by at least three of the already formed weld beads, in a cross-section perpendicular to a longitudinal direction of the weld beads.
Abstract: A tubular portion; and flange portions at both ends of the tubular portion are included. A bent portion is formed between the two flange portions. The two flange portions are directly connected to each other.
Abstract: A CAES generator includes a plurality of motors, a plurality of compressors, a pressure accumulator, an expander, a generator, an electric-motor inverter that changes a rotation speed of each of the motors, a feed command receiver that receives input power as a feed command value before feeding the input power, and a controller. The controller includes a compressor number calculation unit that calculates a maximum number of motors that are allowed to be driven at a rating based on the feed command value, and a compressor drive control unit that drives at the rating, the motors, the number of which is the maximum number calculated by the compressor number calculation unit.
Abstract: A gas supply system (2) includes a compressor unit (21), an accumulator unit (23), a pre-cooling system (24) and a housing (4). In the gas supply system (2), the compressor unit (21) is vertically arranged and the pre-cooling system (24) is arranged above the accumulator unit (23) in the housing (4). The compressor unit (21) and the accumulator unit (23) are covered by one rectangular parallelepiped housing (4).
Abstract: In production of aluminum alloy members by a plastic working of a heat-treatable aluminum alloy extrusion, cracking during the plastic working is eliminated or minimized at low cost as compared with techniques including solution treatment or restoration treatment. An aluminum alloy production system includes an extruding press, a cutting device disposed downstream from the extruding press, and a conveyer and a plastic working machine each disposed in parallel with the extruding press. The extruding press hot-extrudes a heat-treatable aluminum alloy to give an extrusion. The cutting device cuts the extrusion to a predetermined length and isolates the extrusion from the extruding press. The conveyer conveys the extrusion to the plastic working machine, where the extrusion has been cut by the cutting device to a predetermined length. The plastic working machine imparts a plastic working to the extrusion conveyed by the conveyer to form the extrusion into an aluminum alloy part.
Abstract: The present invention relates to a surface-treated metal sheet for polyolefin resin bonding having a metal substrate and an adhesive layer laminated on at least one surface of the metal substrate with a chemical conversion coating film interposed between the metal substrate and the adhesive layer. This surface-treated metal sheet for polyolefin resin bonding is characterized in that a coating liquid for forming the chemical conversion coating film contains an acid-modified polyolefin resin, a colloidal silica, and a silane coupling agent; a coating amount of the chemical conversion coating film is 0.05 to 3 g/m2 in terms of dry mass; the adhesive layer contains an acid-modified polyolefin resin; and the adhesive layer has a thickness of 5 to 100 ?m.
Abstract: A gas shielded arc welding wire contains, based on total mass of the wire in terms of mass %: C: 0.01% to 0.50%; Si: 0.01% to 1.50%; Mn: 0.10% to 2.50%; Cr: 5% to 15%; Ni: 0.05% to 1.50%; Mo: 0.1% to 2.0%; V: 0.1% to 1.0%; Nb: 0.01% to 0.20%; REM: 0.001% to 0.050%; S: 0.0010% to 0.0200%; and O: 0.025% or less (including 0%), which satisfies the following relationship: 3.0?(Nb+10×REM)/(S+O)?200.0.
Abstract: An object of the present invention is to provide: an oxide semiconductor thin film which is produced at relatively low cost and has a high carrier mobility and a high resistance to light stress when used for forming a thin film transistor; and a thin film transistor formed using the oxide semiconductor thin film. The oxide semiconductor thin film contains In, Zn, and Fe, wherein, with respect to a total number of In atoms, Zn atoms, and Fe atoms, a number of In atoms accounts for greater than or equal to 20 atm % and less than or equal to 89 atm %, a number of Zn atoms accounts for greater than or equal to 10 atm % and less than or equal to 79 atm %, and a number of Fe atoms accounts for greater than or equal to 0.2 atm % and less than or equal to 2 atm %. The present invention involves a thin film transistor including the oxide semiconductor thin film.
Abstract: Disclosed herein is a reduced iron production method enabling heat to be input well into reduced-iron raw materials on a hearth covering material in a reduction-melting furnace to improve the efficiency of treatment thereof. The reduced-iron raw materials are set on the hearth covering material through their falls and reduced on the hearth covering material. The hearth covering material is constituted by carbon materials each having a particle diameter of 5 mm or less. At least 7 mass % of the carbon materials have respective particle diameters each being 0.1 mm or less. This restrains the reduced-iron raw materials from embedment into the hearth covering material.
Abstract: A device for evaluating tire rolling resistance, the device includes: load rolls having surfaces that simulate a road surface on which a tire is to travel; a moving mechanism; a load sensor; a position sensor; a phase difference calculation unit; and a rolling resistance evaluation unit. The load rolls are two or more load rolls disposed side by side and are smaller in diameter than the tire.
Abstract: A method for designing an additively-manufactured object includes: a slicing step of slicing a shape of the additively-manufactured object into weld bead layers each having a height corresponding to one bead layer using data of the shape of the additively-manufactured object, thereby generating a plurality of virtual bead layers; a reference direction setting step of setting, as a reference direction, a direction in which the sliced layer of the additively-manufactured object is continuously provided and extended in an intermediate layer disposed at a deposition-direction center of the plurality of virtual bead layers; and a bead adjusting step of adjusting a bead size of the weld bead to be formed in the plurality of virtual bead layers depending on a bead shape in a section perpendicular to the reference direction.
Abstract: To compensate for a decrease in reaction force of a bumper reinforcement, which is made of an aluminum alloy extrusion having two end portions subjected to bend forming and crushed portions on the respective end portions, against an impact load in end impact involved in crushing, and compensate for a decrease in energy absorption amount of the bumper reinforcement. Assuming a space between two flanges includes a first region from a center line of the thickness between the flanges to an outer flange and a second region from the center line to an inner flange in a cross section of the crushed portion perpendicular to an extrusion direction, area of the webs located in one (for example, the first region) of the two regions is larger than area of the webs located in the other region (for example, the second region).
Abstract: An additively manufactured object formed by depositing weld bead layers, each of the weld bead layers being obtained by melting and solidifying a filler metal made of a mild steel, the additively manufactured object includes a plurality of the weld bead layers having a ferrite phase with an average grain diameter of 11 ?m or less in a part except for a surface oxide film.
Abstract: A mixing apparatus includes a mixer configured to mix a material including a rubber or a resin in the presence of a working fluid that is in a supercritical state or a subcritical state. The mixer includes a chamber that forms a flow passage for the working fluid and the material, and a mixing blade disposed in the chamber and fixed to the chamber.
Abstract: To suppress occurrence of stress corrosion cracking in a weld due to tensile residual stress generated in a web or a middle rib in case of bend forming of an aluminum alloy extrusion having the weld on the web or/and the middle rib. In bend forming of the aluminum alloy extrusion, a peak position of tensile residual stress generated in the middle rib exists in a region other than the vicinity of the weld. Since the peak position is away from the weld by a distance, tensile residual stress in the weld is reduced, making it possible to suppress occurrence of stress corrosion cracking.
Abstract: A structure for a vehicle, includes: one side structure made of steel and located on one of outer and inner sides of a vehicle body; and another side structure located on the other of the outer and inner sides of the vehicle body and joined to the one side structure. The another side structure includes: a top portion made of an aluminum alloy and protruding toward the other side; wall portions respectively extending from both end parts of the top portion to the one side, each wall portion being made of an aluminum alloy; and a tab portion attached to an end part of the wall portion, extending toward an outside of the another side structure, and joined to the one side structure, the tab portion being made of steel.
Abstract: A crack-free continuous casting mold configured so that occurrence of cracks at a casting billet can be reduced even in a case where a casting speed exceeds 500 mm/min. The continuous casting mold continuously casts a casting billet while cooling molten metal by a cooling device provided at a cooling casting mold. The cooling device includes multiple cooling nozzles configured to release coolant water to the casting billet pulled out of the cooling casting mold to cool the casting billet. Multiple ejection ports of the multiple cooling nozzles are arranged along an outer circumferential direction of a surface of the casting billet. Each ejection port has a short side and a long side, and is configured such that the long side is arranged along an axial direction of the casting billet.
Abstract: Provided are a tire tangential load measuring device capable of directly measuring a tangential load of a tire and a tire rolling resistance evaluating device capable of evaluating a rolling resistance of a tire using the tire tangential load measuring device, without using a large-sized device. A tire tangential load measuring device (10) includes two or more load rolls (44A, 44B) smaller in diameter than that of the tire and arranged side by side, an air cylinder (13) as a moving mechanism capable of pressing the two or more load rolls (44A, 44B) against the rotating tire with a predetermined load fz, and a strain gauge (51) as a tangential load sensor for measuring the tangential load fx of the tire in a rotating state while the surfaces of the two or more load rolls (44A, 44B) are pressed against the tread surface of the tire with the predetermined load fz. The tire rolling resistance evaluating device uses the tangential load measuring device (10).