Abstract: A rotary electric machine member manufacturing method includes: a step of providing a motor core by stacking a plurality of electromagnetic steel sheets; and a step of welding the motor core by keyhole welding while pressurizing the motor core in a stacking direction with a welding pressure lower than that at which the thickness of the motor core in the stacking direction levels off. The thickness is a length of the motor core between a first end of the motor core and a second end of the motor core.

Abstract: Provided is a lithium nitride manufacturing device (10) for heating a lithium member (9) in a nitrogen atmosphere to nitride the lithium member (9) such that lithium nitride is manufactured, the lithium nitride manufacturing device including: a reaction tank (1) where a nitriding reaction of the lithium member (9) is performed; a heating unit (2) that heats the lithium member (9); an atmosphere control unit (3) that controls a dew point in the reaction tank (1); and an atmosphere cooling unit (4) that cools an inside of the reaction tank (1).

Abstract: A conductor wire insulating film separating method disclosed includes: a preparing step involving preparing rectangular cross-section coil pieces each of which is a conductor wire coated with insulating film and used to provide a stator coil of rotary electric machine; a delivering-in step involving, after the preparing step, delivering coil pieces into a laser separator, with coil pieces aligned such that extremities thereof are adjacent to each other; an applying step involving, after the delivering-in step, continuously applying film removing laser to the extremities of the aligned coil pieces such that the laser is applied to one extremity and then to another extremity, thus removing at least portions of the insulating film from the extremities of the coil pieces; and a delivering-out step involving delivering the coil pieces, from which the at least portions of the insulating film have been removed by the applying step, out of the laser separator.

Abstract: Provided is a method of manufacturing lithium nitride including: a step (A) of preparing a lithium member in which inorganic particles are embedded; and a step (B) of nitriding the lithium member by bringing the lithium member into contact with nitrogen in a state where the inorganic particles are embedded.

Abstract: The invention reduces tensile stress generated in the rotor core in a radial direction when a rotor core and a rotor support member are joined. A region in an axial direction (L) in which a melted joint portion (W2) for joining a rotor core (2) and a rotor support member (9) is formed is set as an axial joint region (JR). Among a plurality of corner portions (4c) of the permanent magnet (4), at least one corner portion (4c) that overlaps with the axial joint region (JR) when seen in a radial direction and that faces an outer peripheral surface (CP2) of the rotor core (2) is set as a specific corner portion (4s). Among facing surface portions (5p) of an inner wall portion of the magnet insertion hole (5) that face the corner portions (4c), the facing surface portion (5p) that faces the specific corner portion (4s) is set as a specific facing surface portion (5s).

Abstract: A manufacturing method of a core for a rotary electric machine including forming a bridge portion, forming a stator side hole portion in at least a first portion of a portion of an electric steel plate in which a slot portion is formed. Then forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; and forming a rotor plate member and a stator plate member by blanking the electric steel plate.

Abstract: A method of manufacturing a rotor that includes a rotor core and a permanent magnet fixed to the rotor core using an adhesive, the method includes applying the adhesive, which contains a volatile agent, to an adhesive placement position of the permanent magnet; drying the adhesive by volatilizing the volatile agent by a magnet heater directly heating the permanent magnet such that a temperature of the permanent magnet becomes higher than a temperature of the adhesive after applying the adhesive; placing the permanent magnet on the rotor core after drying the adhesive; and fixing the permanent magnet to the rotor core by curing the adhesive after placing the permanent magnet.

Abstract: A method of manufacturing a rotor including a rotor core and a permanent magnet that is bonded to the rotor core with an adhesive containing a foaming agent, wherein applying the adhesive includes applying the adhesive such that the adhesive is spread to a portion on a front side with respect to the application area on the application surface, by moving the nozzle to a front side in the nozzle traveling direction with respect to a position in the application area at which feeding of the adhesive by the pump is finished.

Abstract: In a method for manufacturing a rotor, each of adhesive placement portions that are provided between a surface of a permanent magnet on the radially inner side and grooves is formed so as to cover a part of an adhesive applied to the permanent magnet on the radially inner side and parts of the adhesive on both sides in the circumferential direction.

Abstract: A manufacturing method of a core for a rotary electric machine includes: a step of forming a stator side release hole in at least a first portion of a portion of an electric steel plate in which a slot portion is formed; a step of forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; a step of forming a flattened portion; and a step of forming a rotor plate member and a stator plate member by blanking the electric steel plate.

Abstract: Provided is a diphosphorus pentasulfide composition for a sulfide-based inorganic solid electrolyte material, in which a molar ratio (S/P) of a content of sulfur (S) to a content of phosphorus (P) is 2.40 or higher and 2.49 or lower. In the diphosphorus pentasulfide composition for a sulfide-based inorganic solid electrolyte material, in a DSC curve of the diphosphorus pentasulfide composition obtained by measurement using a differential scanning calorimeter under conditions of a start temperature of 25° C., a measured temperature range of 30° C. to 350° C., a temperature increase rate of 5° C./min, and an argon atmosphere with a flow rate of 100 ml per minute, an endothermic peak is shown in a temperature range of 280° C. or higher and 300° C. or lower, and a half-width of the endothermic peak is 4.1° C. or higher.

Abstract: Provided is a lithium nitride composition for a sulfide-based inorganic solid electrolyte material including ?-lithium nitride, wherein in a spectrum obtained by X-ray diffraction in which a CuK? ray is used as a radiation source, when a diffraction intensity of a diffraction peak present at a position of a diffraction angle 2?=23.0±0.3° is represented by I? and a diffraction intensity of a diffraction peak present at a position of a diffraction angle 2?=32.0±0.3° is represented by I?, a value of I?/I? is 4.50 or lower.

Abstract: Provided is a method of manufacturing a sulfide-based inorganic solid electrolyte material including Li, P, and S as constituent elements, the method including: a preparation step of preparing a raw material inorganic composition (A) including at least lithium sulfide, phosphorus sulfide, and a crystal nucleating agent; and a vitrification step of mechanically processing the raw material inorganic composition (A) to vitrify the raw material inorganic composition (A).

Abstract: A method for manufacturing a rotor including a rotor core and a permanent magnet, the rotor core having a magnet hole, and the permanent magnet being inserted in the magnet hole and fixed to the rotor core with an adhesive, including the steps of: applying the adhesive, inserting the permanent magnet into the magnet hole of the rotor core, volatilizing the diluting solvent, expanding the expanding agent, and fixing the permanent magnet to the rotor core.

Abstract: A method of manufacturing a rotor includes: applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature; drying the adhesive after applying the adhesive; inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; and fixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet.

Abstract: The invention reduces tensile stress generated in the rotor core in a radial direction when a rotor core and a rotor support member are joined. A region in an axial direction (L) in which a melted joint portion (W2) for joining a rotor core (2) and a rotor support member (9) is formed is set as an axial joint region (JR). Among a plurality of corner portions (4c) of the permanent magnet (4), at least one corner portion (4c) that overlaps with the axial joint region (JR) when seen in a radial direction and that faces an outer peripheral surface (CP2) of the rotor core (2) is set as a specific corner portion (4s). Among facing surface portions (5p) of an inner wall portion of the magnet insertion hole (5) that face the corner portions (4c), the facing surface portion (5p) that faces the specific corner portion (4s) is set as a specific facing surface portion (5s).

Abstract: A manufacturing method of a core for a rotary electric machine including forming a bridge portion, forming a stator side hole portion in at least a first portion of a portion of an electric steel plate in which a slot portion is formed. Then forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; and forming a rotor plate member and a stator plate member by blanking the electric steel plate.

Abstract: A method of manufacturing a rotor including a rotor core and a permanent magnet that is bonded to the rotor core with an adhesive containing a foaming agent, wherein applying the adhesive includes applying the adhesive such that the adhesive is spread to a portion on a front side with respect to the application area on the application surface, by moving the nozzle to a front side in the nozzle traveling direction with respect to a position in the application area at which feeding of the adhesive by the pump is finished.

Abstract: A manufacturing method of a core for a rotary electric machine includes: a step of forming a stator side release hole in at least a first portion of a portion of an electric steel plate in which a slot portion is formed; a step of forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; a step of forming a flattened portion; and a step of forming a rotor plate member and a stator plate member by blanking the electric steel plate.

Abstract: A method of manufacturing a rotor that includes a rotor core and a permanent magnet fixed to the rotor core using an adhesive, the method includes applying the adhesive, which contains a volatile agent, to an adhesive placement position of the permanent magnet; drying the adhesive by volatilizing the volatile agent by a magnet heater directly heating the permanent magnet such that a temperature of the permanent magnet becomes higher than a temperature of the adhesive after applying the adhesive; placing the permanent magnet on the rotor core after drying the adhesive; and fixing the permanent magnet to the rotor core by curing the adhesive after placing the permanent magnet.