Abstract: A rotary tool used in a joining device that performs friction stir welding of a joint member. The rotary tool includes: a main body having a fixed unit attached and secured to the joining device, and a rotary shaft for transmitting a rotary force from the joining device; a stirring member that has a stirring pin inserted into the joint member to perform friction stirring on the joint member, that is arranged so as to be rotatable by receiving the rotary force from the rotary shaft, and that is provided on the main body so as to be movable relative to an axial direction of the rotary shaft; and an elastic member that biases the stirring member toward a distal-end side relative to the axial direction of the rotary shaft.

Abstract: The present invention aims to provide a joining method that can prevent poor joining. The present invention provides a joining method including: a measuring step that measures a height near a joint portion, which serves as a part for joining formed by a first metal member and a second metal member placed in a positional relationship for joining by abutting or overlapping, and obtains measured values; a setting step that sets a height position of a rotating tool based on the measured values obtained by the measuring step; and a friction stir step that relatively moves the turning rotating tool along the joint portion based on the height position set by the setting step.

Abstract: A rotary tool includes: a main body having a fixed unit and a rotary shaft; a stirring pin rotatable and movable relative to an axial direction of the rotary shaft, and inserted into a joint member to perform friction stirring; and a shoulder that is arranged on the main body so as not to receive a rotary force from the main body but to be movable relative to the axial direction of the rotary shaft, and that presses the joint member while in contact with the joint member, wherein the stirring pin and the shoulder are mounted to form an assembly so as to be relatively movable and to move integrally in the axial direction of the rotary shaft, and the rotary tool further includes a first elastic member that biases the assembly toward a distal-end side of the stirring pin relative to the axial direction of the rotary shaft.

Abstract: A rotary tool includes: a main body, and a rotary shaft for transmitting a rotary force; a stirring pin that is arranged on the main body so as to be rotatable by receiving the rotary force and to be movable relative to an axial direction of the rotary shaft, and that is inserted into a joint member to perform friction stirring on the joint member; a shoulder that is formed separately from the stirring pin, that is arranged on the main body so as not to receive the rotary force from the main body but to be movable separately from the stirring pin relative to the axial direction of the rotary shaft, and that presses the joint member while in contact with the joint member; and a first elastic member that biases the stirring pin toward a distal-end side relative to the axial direction of the rotary shaft.

Abstract: An aluminum composite material includes a first metallic plate, a second metallic plate, and a matrix material that is interposed between the first metallic plate and the second metallic plate and is formed of aluminum powder. Gadolinium oxide particles are dispersed in the matrix material.

Abstract: An aluminum composite material includes a first metallic plate, a second metallic plate, and a matrix material that is interposed between the first metallic plate and the second metallic plate and is formed of aluminum powder. Gadolinium oxide particles are dispersed in the matrix material.

Abstract: Provided is a pellicle frame that can prevent generation of haze and reduces a surface glittering defect under irradiation with collected light, and a method of manufacturing the same. The pellicle frame is obtained by using an aluminum frame material having a structure satisfying predetermined conditions on the circle-equivalent diameters of a Mg2Si crystallized product, an AlCuMg crystallized product, an Al—Fe-based crystallized product (AlmFe or Al7Cu2Fe), and an Al2CuMg crystallized product and on the area ratios of those crystallized products each having a circle-equivalent diameter of 1 ?m or more, and in addition, subjecting the aluminum frame material to anodic oxidation processing using an alkaline electrolytic solution containing as an electrolyte a predetermined organic acid salt.

Abstract: An aluminum composite material includes a first metallic plate, a second metallic plate, and a matrix material that is interposed between the first metallic plate and the second metallic plate and is formed of aluminum powder. Gadolinium oxide particles are dispersed in the matrix material.

Abstract: Provided is a pellicle frame that can prevent generation of haze and reduces a surface glittering defect under irradiation with collected light, and a method of manufacturing the same. The pellicle frame is obtained by using an aluminum frame material having a structure satisfying predetermined conditions on the circle-equivalent diameters of a Mg2Si crystallized product, an AlCuMg crystallized product, an Al—Fe-based crystallized product (AlmFe or Al7Cu2Fe), and an Al2CuMg crystallized product and on the area ratios of those crystallized products each having a circle-equivalent diameter of 1 ?m or more, and in addition, subjecting the aluminum frame material to anodic oxidation processing using an alkaline electrolytic solution containing as an electrolyte a predetermined organic acid salt.

Abstract: A metal-based composite material which has a sufficient radiation absorption function, also has excellent strength, corrosion resistance, processability, impact resistance and heat conductivity, and is inexpensive. A metal-based composite material having such a double-clad structure that a core material is sandwiched between a pair of skin materials each composed of an aluminum plate in such a manner that the core material is closely adhered to the skin materials, wherein the core material comprises a matrix produced by consolidating an aluminum powder by applying a pressure and tungsten particles dispersed in the matrix, and wherein the tungsten particles are contained in the core material in an amount of 5 to 70 vol %. A method for producing a metal-based composite material, which comprises filling a mixed powder of an aluminum powder that constitutes a matrix and tungsten particles into an aluminum case and then extending the mixed powder by applying a pressure.

Abstract: A ratio shift control system for an automatic transmission calculates the magnitude of a difference in temperature between a detected engine coolant temperature and a detected outside air temperature, which are detected by coolant and outside air temperature sensors, respectively, during one engine start of an internal combustion engine. Ratio shift in the automatic transmission is controlled based on the detected outside air temperature during the one engine start when the magnitude of the difference in temperature is equal to or less than a predetermined cold engine evaluation threshold.

Abstract: A ratio shift control system for an automatic transmission calculates the magnitude of a difference in temperature between a detected engine coolant temperature and a detected outside air temperature, which are detected by coolant and outside air temperature sensors, respectively, during one engine start of an internal combustion engine. Ratio shift in the automatic transmission is controlled based on the detected outside air temperature during the one engine start when the magnitude of the difference in temperature is equal to or less than a predetermined cold engine evaluation threshold.

Abstract: A high purity nitrogen gas generator is provided which can be rapidly returned to a stable state when boil-off gas is generated in a liquid nitrogen storage tank 10. The high purity nitrogen gas generator includes a liquid nitrogen storage tank 10, a rectification column 7, a liquid nitrogen introduction pipe P15 for supplying liquid nitrogen from the liquid nitrogen storage tank to the rectification column, an inverted U-type pipe P13 whose upper end is positioned at a height in the vicinity of the top portion of said liquid nitrogen storage tank connected to the bottom portion of said liquid nitrogen storage tank 10, said liquid nitrogen storage tank 10 and said liquid nitrogen introduction pipe P15 being connected with each other by way of said inverted U-type pipe, the upper end of the inverted U-type pipe and the top portion of said liquid nitrogen storage tank are connected with each other by means of a pipe P17 and a control valve V3 provided on the way of said pipe P17.