Abstract: A battery case for an electric vehicle includes a frame that has a polygonal frame shape in plan view, defines a through hole inside, and has R shapes provided on inner sides of corner parts of the polygonal frame shape. The case also includes a bathtub-shaped tray that includes a bottom wall located in the through hole, a surrounding wall that is provided around the bottom wall and defines an opening part on a side opposite to the bottom wall, and a flange that is provided at a distal end of the surrounding wall. The tray is pressure-welded to and integrated with the frame.

Abstract: A measurement system according to an aspect of the present invention enables measurement of an intensity distribution of diffracted X-rays obtained by irradiating a fillet portion of a metallic structure with X-rays, the metallic structure comprising: an axis portion; and a flange portion protruding radially from the axis portion, wherein the metallic structure comprises the fillet portion in a connection portion between the axis portion and the flange portion, the measurement system including: a diffracted X-rays measurement device provided with an irradiation unit that irradiates the fillet portion with X-rays; and a positioning device that positions the diffracted X-rays measurement device with respect to the fillet portion, in which the positioning device including: a moving mechanism that moves three-dimensionally the diffracted X-rays measurement device relative to the fillet portion; and a rotation mechanism that rotates the diffracted X-rays measurement device in such a direction that an angle of inci

Abstract: A method for manufacturing an aluminum alloy extruded part includes: hot-extruding a 7000 series aluminum alloy by an extruder to form an extruded material; cutting the extruded material extruded from the extruder and moving forward to a predetermined length; applying plastic working to the cut extruded material in a state in which Vickers hardness of the extruded material is 50 to 70 (Hv); and applying aging treatment to the extruded material after the plastic working.

Abstract: An apparatus is configured to manufacture a metal-resin composite by press-molding a metal plate and a resin material. The apparatus includes an upper mold and a lower mold for sandwiching the metal plate and the resin material, and an elastic member attached to a molding surface of the lower mold. A cavity for disposing the resin material is provided by the upper mold and the lower mold. The elastic member is disposed to seal the resin material into the cavity by pressing the metal plate against the upper mold.

Abstract: A production method of pig iron using a blast furnace with a tuyere includes: charging a first layer containing an iron ore material and a second layer containing coke alternately in the blast furnace; and reducing and melting the iron ore material in the charged first layer while injecting an auxiliary reductant into the blast furnace by hot air blown from the tuyere, in which: an aggregate for letting through the hot air to a central portion of the blast furnace is blended into the first layer; and the aggregate contains a reduced iron molded product obtained through compression molding of reduced iron.

Abstract: A manufacturing system of an additively-manufactured object includes: a torch provided at a robot arm; a measuring unit configured to measure, in a non-contact manner, a shape of a weld bead that is deposited by a shape sensor attached to the torch and output measurement information of at least one of a representative height of the weld bead and a cross-sectional area of the weld bead; a switching unit configured to switch the measurement information output by the measuring unit based on at least one of a shape and position information of a weld bead included in the deposition plan; and a correction unit configured to correct a condition for depositing weld beads based on the measurement information and the deposition plan.

Abstract: In the present application, a shaped article W is produced, the shaped article including: a plurality of blades provided around a shaft, with an interval disposed therebetween in the circumferential direction; and curved surface-shaped recesses present in between the blades. This method for producing a shaped article includes: a shaping step, in which welding beads where filler material has been melted and solidified at the peripheral surface are layered on a base material having a circular cross-section of a greater radius than the bottom circle that passes through the lowest part of the recess, thus forming a shaped section that will become a blade; and a cutting step in which part of the surface of the shaped section and the peripheral surface of the base material is cut to form a blade, and the recesses between the blades are also formed.

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: Formed in series along an axial-direction end portion of a large-diameter pipe member, in the following order from the pipe end, are: a large-diameter-pipe pipe-end expanding portion; a large-diameter-pipe reduced-diameter portion; a large-diameter-pipe bulging portion; and a tapered portion. Formed in series along an axial-direction end portion of a small-diameter-pipe member, in the following order from the pipe end, are: a small-diameter-pipe pipe-end expanding portion; a small-diameter-pipe enlarged-diameter portion; and a small-diameter-pipe bulging portion.

Abstract: A battery case, including a cross member between a pair of opposing wall surfaces of an inner peripheral surface of a rectangular frame body to partition an inside space surrounded by a frame body, and a bonding assistance member between each end portion of the cross member and each of the wall surfaces of the frame body facing the end portion. One end portion of the bonding assistance member is welded to the wall surface, and the bonding assistance member has an overlap portion extending from the one end portion toward the inside space and overlapping with a side surface of the end portion of the cross member.

Abstract: A method for manufacturing an additively-manufactured object includes a depositing planning step of creating a depositing plan and a building step of repeatedly depositing the weld beads based on the depositing plan. The building step includes a frame portion building step of building a frame portion and an internal building step of building an internal building portion. The internal building step includes a pre-measurement process of measuring a shape of a base on which the weld bead layer is to be deposited, a deviation amount calculation process of creating a measured profile of the base based on the measured shape of the base, determining a planned profile of the base based on the depositing plan, and calculating a deviation amount of the measured profile with respect to the planned profile, and a pre-correction process of correcting a welding condition of the weld beads.

Abstract: A method measuring a residual stress of a fillet portion, where an angle of incidence of X-rays denoted by ? [°], a fillet radius denoted by R [mm], a fillet angle denoted by ? [°], a vertical width of a housing of an X-ray stress measuring apparatus denoted by W [mm], a width of a detection region of a two-dimensional detector denoted by D [mm], a complementary angle of a Bragg angle denoted by ? [°], and an interval between a flange portion and an imaginary straight line which passes through a fillet center and is parallel to the flange portion denoted by a [mm], formula 1 is satisfied; when ? ? 0, an irradiation distance L [mm] of the X-rays, the irradiation distance L satisfies formula 2; and when ? < 0, the irradiation distance L satisfies formula 3.

Abstract: A sensor protecting case is provided with a case main body for housing a sensor main body and a sensor input portion, and a centralized cooling portion that is partitioned off by a partition so as to include at least part of the sensor input portion, and constitutes an independent space within the case main body. The case main body has a first gas inflow port for causing gas to flow into the case main body, and a first gas outflow port for causing the gas to flow out of the case main body. The partition has a second gas inflow port that is connected to the first gas inflow port to cause the gas to flow into the centralized cooling portion, and a second gas outflow port for causing the gas to flow out of the centralized cooling part into the case main body.

Abstract: A method for manufacturing an additively-manufactured object incudes a groove portion processing step, a groove portion closing step, and a building step. In the groove portion processing step, a groove portion is formed by cutting an outer periphery of the shaft body. In the groove portion closing step, a first weld bead is formed along the groove portion on an edge portion of the groove portion in a shaft body to close the groove portion to form a hollow portion. In the building step, a built-up portion is built by depositing a second weld on the outer periphery of the shaft body.

Abstract: Disclosed is a high-strength steel sheet having predetermined chemical components, and microstructures of the steel sheet satisfies that: a fraction of MA in all steel microstructures being more than 0% and 15.0% or less by area ratio; a fraction of a soft ?-phase microstructure in the all steel microstructures being 0% or more and 50% or less by area ratio; and a standard deviation of an equivalent circle diameter of retained austenite being greater than 0.155 ?m.

Abstract: A method for manufacturing a joint structure formed by joining a first plate-shaped member and a second plate-shaped member having a shape that is longer in a longitudinal direction than in a lateral direction includes overlapping the first plate-shaped member and the second plate-shaped member, after the overlapping, joining each of both edge portions of the second plate-shaped member by forming a weld metal along the longitudinal direction to the first plate-shaped member. The weld metal extends further outward in the lateral direction than the edge portions of the second plate-shaped member, in which the weld metal is formed by a hybrid welding in which a laser is added as a heat source during arc welding such that the weld metal extends around both of the edge portions of the second plate-shaped member along the longitudinal direction.

Abstract: A defect occurrence prediction method uses a mathematical model to associate input information, which includes various items, namely the material of a built object, welding conditions for welding beads, and a welding track; and output information, which includes defect information regarding the built object where additive manufacturing has been performed under the conditions in the input information. This mathematical model is used to create a database, and the defect information regarding the built object is found by searching the database, and the defect information is then presented. Each item of the input information includes a plurality of input subitems that are mutually different. The output information includes a plurality of individual defect information items which correspond respectively to the input subitems. When the mathematical model is generated, the respective input subitems of the input information are associated with the individual defect information items via the mathematical model.

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: A system for manufacturing an additively-manufactured object obtained by depositing weld beads based on a depositing plan, the system includes: a torch that is provided on a robot arm; a first measurement unit that is mounted on the torch and that directly measures, in a non-contact manner, a base shape of a base portion on which the weld beads are deposited; a second measurement unit that measures at least one of a current, a voltage, and a filler metal supply rate when the weld beads are deposited, and estimates the base shape from history change thereof; and a control unit that selects at least either of a measurement result by the first measurement unit or by the second measurement unit and corrects control of at least one of the robot arm, the current, the voltage, and the filler metal supply rate.

Abstract: A building plan assistance method by which a mathematical model is used to associate input information, including the respective items of the material of a build object, a weld condition of weld beads, and a weld track, with output information including a characteristic value of the build object when additively manufactured under the condition of the input information, and a database is created using the mathematical model. The database is searched for a build object material, a weld condition, and a weld track corresponding to a target characteristic value of the build object to be manufactured, and the obtained build object material, weld condition, and weld track are presented. In the creating of the database, each of input sub-items of the input information items is associated with an individual characteristic value of the output information by means of the mathematical model.