Abstract:
Provided are: an Mg—Si system thermoelectric conversion material which exhibits stably high thermoelectric conversion performance; a sintered body for thermoelectric conversion, which uses this Mg—Si system thermoelectric conversion material; a thermoelectric conversion element having excellent durability; and a thermoelectric conversion module. A method for producing an Mg—Si system thermoelectric conversion material according to the present invention comprises a step for heating and melting a starting material composition that contains Mg, Si, Sb and Zn. It is preferable that the contents of Sb and Zn in the starting material composition are respectively 0.1-3.0 at % in terms of atomic weight ratio.
Abstract:
A disposer includes: a housing with an inlet portion in an upper part thereof through which kitchen waste is thrown in, and an outlet portion on a lower lateral face thereof through which the kitchen waste is discharged together with water; a rotating plate provided in a rotatable manner to separate an inner space of the housing into a pulverization chamber positioned on a side of the inlet portion, and a discharging chamber positioned on a side of the outlet portion; a hammer on the rotating plate; and an annular fixed blade that is provided on an inner lateral face of the housing to surround the rotating plate with an interval, and pulverizes the kitchen waste in cooperation with the hammer, in which a visor portion that regulates communication in a vertical direction toward a gap between the rotating plate and the fixed blade is formed above the outlet portion.
Abstract:
A stannide thermoelectric conversion module includes a thermoelectric conversion element, and an electrode material bonded to the thermoelectric conversion element with a bonding material therebetween, the thermoelectric conversion element is a stannide thermoelectric conversion element including a thermoelectric conversion part containing a stannide compound having composition represented by a general expression Mg2Si1-xSnx (where x satisfies a relation of 0.5
Abstract:
A method for processing fracture surfaces of a ductile metal component by processing fracture surfaces (51a and 52a) of fracture components (51 and 52) into which the ductile metal component (50) is divided by fracturing the ductile metal component (50) in a fracture direction includes: a holding step of holding the fracture components in a state in which the fracture surfaces of the fracture components are separated from each other; a vibration step of imparting predetermined vibration to at least either one of the fracture components being held in the holding step in a direction intersecting the fracture direction; a pressing step of pressing the fracture surfaces of the fracture components against each other by a specified pressing force in a state in which the vibration is imparted by the vibration step; and a separation step of separating the fracture surfaces of the fracture components from each other after the pressing step in the state in which the vibration is imparted by the vibration step.
Abstract:
A connecting rod fracture machine is disclosed which mateably inserts a half-split type mandrel into an opening of a large end portion of a connecting rod to expand the opening. The machine comprises first and second support members (31), (32) for supporting the connecting rod horizontally, the support members being arranged movably apart from each other on the base of a pallet (24) for placing the connecting rod (1) thereon. Moreover, the machine includes a half-split type mandrel (36), vertically provided on these support members, comprising mandrel half portions (37), (38) with each outer peripheral surface thereof being in contact with the inner surface of the opening. The machine also comprises a wedge (53) for separating the mandrel half portions uniformly apart from each other, the wedge having tapered surfaces in contact with opposite edge surfaces of the mandrel half portions.
Abstract:
A method for fracturing a metal component in which a through hole is included, and groove portions that continue from a first open end to a second open end of the through hole are formed at facing positions in an inner circumferential surface of the through hole, includes specifying positions on which a stress is to concentrate when fracturing of the metal component is started, in the groove portions of the metal component; forming stress concentration portions at positions in bottom portions of the groove portions corresponding to the specified positions such that the specified positions in the groove portions are caused to serve as breaking start points; and causing cracking earlier at the stress concentration portions in the groove portions than at each portion of the groove portions when the fracturing is started and causing cracking to develop from each portion of the groove portions.
Abstract:
Provided are: an Mg—Si system thermoelectric conversion material which exhibits stably high thermoelectric conversion performance; a sintered body for thermoelectric conversion, which uses this Mg—Si system thermoelectric conversion material; a thermoelectric conversion element having excellent durability; and a thermoelectric conversion module. A method for producing an Mg—Si system thermoelectric conversion material according to the present invention comprises a step for heating and melting a starting material composition that contains Mg, Si, Sb and Zn. It is preferable that the contents of Sb and Zn in the starting material composition are respectively 0.1-3.0 at % in terms of atomic weight ratio.
Abstract:
A hydraulic system includes position sensors that are provided together with solenoid valves in fluid passages extending between a working fluid source and hydraulic actuators. Each position sensor is comprised of two gears disposed in the fluid passage so as to be rotatable by the flow of working fluid, and two sensing elements each disposed to face either one of the gears. A controller determines the operating position of each actuator based on sensor outputs that are out of phase with each other and are generated by the sensing elements each time the gears rotate for a predetermined angle.
Abstract:
A fracture surface inspection device for inspecting a first fracture surface and a second fracture surface that are generated through fracture splitting, which is provided with a data acquisition unit configured to acquire two-dimensional data and three-dimensional data on each of the fracture surfaces, a contour extraction unit configured to extract, from the two-dimensional data, a first contour of the first fracture surface and a second contour of the second fracture surface, a transformation amount calculation unit configured to calculate a transformation amount X(affine) when the second contour is affine-transformed to the first contour, a distortion correction unit configured to calculate distortion correction data by affine-transforming the three-dimensional data on the second fracture surface with the transformation amount X(affine), and a comparison unit configured to compare the three-dimensional data on the first fracture surface and the distortion correction data.
Abstract:
A method of forming a fracture start portion of a con rod for forming fracture start portions of a con rod at opposing positions in an inner peripheral surface of a large end of the con rod made of metal, includes a first step of forming a groove portion at a position corresponding to the fracture start portion by using a first insert tip with a large tip end and a second step of forming the fracture start portion, which has become a V-shaped groove, by machining a bottom portion of the groove portion smaller by using a second insert tip having a tip end smaller than the first insert tip.