Abstract: Provided is a kneading device that can check a progress of wear of an inner wall face of a kneading chamber provided in a casing without stopping the kneading device. A kneading device includes a sensor-mount space provided in a wall of a casing, a wear detecting sensor of which a detecting section is disposed at a bottom of the sensor-mount space, and a controller that receives a signal output from the wear detecting sensor, the controller including a wear determining unit that determines that wear of an inner wall face of a kneading chamber has progressed based on a change in the signal.
Abstract: A compressed air energy storage and power generation apparatus includes an electric motor, a compressor, an accumulator, an expander, a generator, and a controller, in which the compressor includes a first compressor of dynamic type and a second compressor of a positive displacement type, during charge of the apparatus, in a case where variation time of predicted variation power exceeds activation stop time of the first compressor, the controller supports a predicted variation power component by performing a unit number control of the first compressor and performing the unit number control and a rotation speed control of the second compressor, and in a case where the variation time of the predicted variation power is equal to or less than the activation stop time of the first compressor, the controller supports the predicted variation power component by performing the unit number control and the rotation speed control of the second compressor.
Abstract: A joint structure formed by resistance welding a plurality of superposed steel sheets includes a high tensile strength steel sheet having a tensile strength of at least 590 MPa and containing a chemical component having a carbon equivalent Ceq of at least 0.53%. The high tensile strength steel sheet has a decarburized layer between a base plate and a galvanized layer formed on at least one of a surface on a superposition surface side and a surface on a welding electrode side of the high tensile strength steel sheet, or has a decarburized layer on a superposition surface of the high tensile strength steel sheet adjacent to a galvanized layer of a galvanized steel sheet to be superposed. The decarburized layer has a thickness of at least 5 ?m and at most 200 ?m, and the carbon equivalent Ceq is a value defined by a formula: Ceq=C+Si/24+Mn/6.
Abstract: A joint structure, includes: a first member including a high tensile strength steel; a second member including a high tensile strength steel and superposed on the first member; a surface soft layer formed on at least one of a superposition surface of the first member, on which the second member is superposed, and a superposition surface of the second member, on which the first member is superposed; a molten-solidified portion formed by melting and solidifying the first member and the second member; and a heat affected zone formed around the molten-solidified portion, in which the surface soft layer has a total thickness of 5 ?m to 200 ?m, and the molten-solidified portion has a carbon amount of 0.21 mass % or more, and a maximum Vickers hardness of the surface soft layer in the heat affected zone is 100 Hv to 500 Hv.
Abstract: A welding method for joining a first plate made of a material other than steel and a second plate made of steel includes a step of making a hole through each of the first plate and the second plate, a press-fitting step, an overlapping step, and a filling and welding step. A shaft portion of a joining assist member being solid, being made of steel, and having an outer shape with step having the shaft portion and a flange portion is press-fitted in the hole of the first plate. The first plate and the second plate is overlapped such that the shaft portion faces the hole of the second plate. The hole of the second plate is filled with a weld metal and the second plate and the joining assist member are welded.
Abstract: A compressed-air-storing power generation apparatus 1 comprises a plurality of compression/expansion devices 14 having a function of producing compressed air using electric power and a function of generating electricity using compressed air, an accumulator 10 that is fluidly connected to the plurality of compression/expansion devices 14 and that accumulates compressed air, and a control apparatus 16 that stops first compression/expansion devices 14 which are being driven and drives second compression/expansion devices 14 which have stopped when a charge/discharge command value to switch between charging and discharging is generated.
Abstract: A bead forming method includes the steps of preparing a bumper stay having a partition wall that partitions an internal space and extends in a longitudinal direction, an elastic body that can be inserted into the bumper stay, and a pusher that presses the elastic body; inserting the elastic body into the bumper stay and arranging the elastic body in the bumper stay so as not to come into contact with the partition wall; and forming a buckling bead by compressing the elastic body in the longitudinal direction of the bumper stay by the pusher to expand the elastic body outward in a radial direction without coming into contact with the partition wall, thereby bulging a part of an outer wall of the bumper stay outward in the radial direction without deforming the partition wall.
Abstract: A compressed air energy storage power generation device includes a compression/expansion combined machine having a function to produce compressed air utilizing electric power and a function to generate electric power utilizing the compressed air, a pressure storage unit that is fluidly connected to the compression/expansion combined machine and stores the compressed air, inverters that adjust rotation speed of the compression/expansion combined machine, a flow rate adjustment valve that adjusts amount of the compressed air supplied from the pressure storage unit to the compression/expansion combined machine, and a control device that reduces, when receiving a command value that reduces amount of power generated by the compression/expansion combined machine, amount of power generated by the compression/expansion combined machine by making the inverters to reduce rotation speed of the compression/expansion combined machine and decreasing an opening degree of the flow rate adjustment valve.
Abstract: A method for manufacturing an additively-manufactured object, includes: an additively-manufacturing step of building a layered body by depositing a weld bead obtained by melting and solidifying a filler metal, the layered body having an opening along a forming direction of the weld bead and an internal space surrounded by the weld bead; and a closing step of forming a closing wall portion connecting an edge portion of the opening with the weld bead for closing. In the additively-manufacturing step, the opening is formed with a width dimension larger than a bead width of the weld bead, and in the closing step, the closing wall portion having a width dimension larger than the bead width is formed by the weld bead to close the opening.
Abstract: To provide a hydrogen gas supply device with which pressure resistance of a filter that catches sulfur components contained in a hydrogen gas is improved. A hydrogen gas supply device for a hydrogen station includes a compression portion that compresses a hydrogen gas by reciprocating motion of a piston, in which a piston ring containing sulfur components is mounted on the piston, a filter arranged on the downstream side of the compression portion, the filter that catches sulfur components contained in the hydrogen gas, and a first pipe connecting the compression portion and the filter. The filter includes an element portion having activated carbon onto which the sulfur components contained in the hydrogen gas are absorbable, and a steel housing portion that houses the element portion, in which a gas introduction passage that communicates with the first pipe and guides the hydrogen gas to the element portion is formed.
Abstract: Provided are oil mist measurement device and method capable of obtaining an oil mist concentration with higher accuracy and a compression system using the oil mist measurement device. The oil mist measurement device of the present invention includes first-A and first-B detection sections 1A, 1B configured to detect measurement target pressures, a second detection section 2 configured to irradiate a measurement target with detection light to detect the intensity of light scattered by oil mist in the measurement target, and a concentration processing section 32 configured to correct the scattered light intensity detected by the second detection section 2 based on the pressures detected by the first-A and first-B detection sections 1A, 1B to obtain a corrected scattered light intensity thereby obtaining an oil mist concentration based on the obtained corrected scattered light intensity.
Abstract: A method for depositing a hardened layer includes sequentially depositing a hardened layer formed by supplying a powder material for forming a hardened layer, which is obtained by mixing a plurality of kinds of powders, to a substrate, and melting and solidifying the powder material on/above the substrate. The powder material contains a first powder containing an alloy to be serving as a matrix portion of the hardened layer and a second powder containing a ceramic. The method includes heating the powder material until at least a part of the second powder is melted, to allow at least a part of metal elements contained in the melted second powder to be dissolved in the matrix portion of the hardened layer.
Abstract: A precursor, which is a drawn wire product of a composite pipe, the composite pipe having: a composite wire group; a barrier layer; and a protective layer, wherein the composite wire group has: a plurality of tin wires each having at least one tin core being made of tin or a tin alloy, and a copper matrix which surrounds the at least one tin core; and a plurality of niobium wires each having a plurality of niobium cores being made of niobium or a niobium alloy, and a copper matrix which surrounds the plurality of niobium cores, the plurality of niobium wires being disposed such that each of the tin wires is surrounded by the niobium wires, the composite wire group contains titanium in an amount of from 0.38% by mass to 0.55% by mass.
Abstract: An oxide layer thickness measurement device according to the present invention stores, for each of layer thickness measurement sub-ranges constituting a layer thickness measurement range, layer thickness conversion information representing a correlation between a layer thickness and an emissivity where a ratio of a change in the emissivity to a change in the layer thickness in the layer thickness measurement sub-range falls within a set extent. Emitting light luminances of a surface of a steel sheet are measured at respective measurement wavelengths different from each other, and a temperature of the surface of the steel sheet is measured to thereby calculate the emissivity at each of the measurement wavelengths.
Abstract: An oxide layer thickness measurement device according to the present invention stores, for each of layer thickness measurement sub-ranges constituting a layer thickness measurement range, layer thickness conversion information representing a correlation between a layer thickness and an emitting light luminance where a ratio of a change in the emitting light luminance to a change in the layer thickness in the layer thickness measurement sub-range falls within a set extent. The device includes a plurality of emitting light luminance measurement parts for measuring emitting light luminances of a surface of a steel sheet at respective measurement wavelengths different from each other.
Abstract: The element joint is obtained by joining: a long pipe; a short pipe made of a quality of material having a strength equal to or higher than a strength of the long pipe; and a plate material made of a quality of material having a strength equal to or higher than a strength of the short pipe. In the element joint, at least one member of the long pipe and the short pipe includes a pipe-shaped portion, and the pipe-shaped portion of the one member is pipe-expanded and joined to the other member by press-fitting. The short pipe and the plate material are welded to each other.
Abstract: An electric motor includes an armature and a mover. The armature includes an armature coil. The mover includes a plurality of pole blocks each including an iron core disposed to face the armature and a plurality of permanent magnets which surround the iron core such that a surface of the iron core, which faces the armature, is open. The plurality of permanent magnets in each pole block are disposed such that magnetic poles thereof facing the iron core are equal in polarity.
Abstract: A copper or copper alloy sheet strip with a surface coating layer according to an embodiment of the present invention includes: a copper or copper alloy sheet strip as a base metal; and an underlayer and a Cu—Sn alloy layer provided as the surface coating layer on a surface of the base metal in this order, the underlayer including any one or two layers of a Ni layer, a Co layer, and a Fe layer, wherein a surface of the Cu—Sn alloy layer has an arithmetic mean roughness Ra of 0.3 to 3.4 ?m, and a maximum height Rz of 2.2 to 14.4 ?m.
Abstract: Provided are a nitriding apparatus and a method of nitriding, which are capable of suppressing generation of a compound layer by accurately measuring temperature of an object to be treated by nitriding. A nitriding apparatus includes a chamber, a gas supplying unit, a support, a plasma source, a heater, a thermocouple wire including a temperature measuring section, an accommodating member, a power supply for an object to be treated, and a treatment condition control unit. The accommodating member internally accommodates the thermocouple wire to cover the temperature measuring section, while being insulated from the thermocouple wire. The power supply for an object to be treated applies a predetermined voltage to an object to be treated and the housing member so that the object to be treated and the accommodating member are set to an identical potential on the negative side.
Abstract: Provided is a hot filament CVD device capable of easily disposing multiple base materials in a chamber. A hot filament CVD device includes a chamber, multiple filaments, multiple base material supports supporting respective multiple base materials, and a table. The multiple base material supports can be inserted into the chamber in a predetermined insertion direction through an opening, and support the corresponding multiple base materials so that the multiple base materials are disposed at intervals in the insertion direction. The table has a mounting surface on which the multiple base material supports are allowed to be mounted allowing the multiple base materials to be disposed facing the corresponding multiple filaments, and supports the multiple base material supports inside the chamber while allowing the multiple base material supports to be disposed adjacent to each other in a chamber width direction.