Abstract: A trajectory plan creation assistance method for assisting creation of a trajectory plan acquires shape data of the manufacturing object, decomposes a three-dimensional shape model based on the shape data into a plurality of linear models each having a polygonal vertical cross section in a longitudinal direction, sets a bead formation locus for forming the weld bead along the linear model and the bead formation trajectory including a lamination order of the weld bead, generates a plurality of polygonal columnar unit blocks by dividing the linear model into unit lengths along the set bead formation locus, and creates the trajectory plan by simulating the formation of the weld bead for each of the unit blocks by simulation.

Abstract: A bumper reinforcement member is made of an aluminum alloy extruded shape material and having an outer flange and inner flange separated from each other by a first flange distance. A first outer connection portion is separated from a second outer connection portion by an outer web distance shorter than the first flange distance, and the first inner connection portion is separated from the second inner connection portion by an inner web distance shorter than the first flange distance. The first web and the second web are respectively curved so as to have protruding shapes facing each other at both the end portions.

Abstract: Provided are a magnetic field generating device and an electric motor with which it is possible to generate a large amount of magnetic flux using a simple construction. The magnetic field generating device is provided with a magnetic pole element, a facing magnetic body opposing the same in an opposing direction, and an inner support member. The magnetic pole element includes a plurality of first iron cores, a plurality of second iron cores, a plurality of third iron cores, a plurality of fourth iron cores, and a plurality of back surface permanent magnets. Each of the plurality of first to fourth iron cores has a magnetic pole surface opposing the facing magnetic body and a back surface on the opposite side thereto, and the plurality of back surface permanent magnets are disposed on the back surfaces of each of the plurality of first to fourth iron cores.

Abstract: A bumper system includes a rear wall of a bumper beam provided with hole portions, and a bumper stay including tubular portions extending in the longitudinal direction, the tubular portions being inserted into the hole portions and joined to the hole portions by pipe expansion joining. The bumper stay includes a pulling-out obstructing portion protruding from the outer surfaces of the tubular portions in a cross section perpendicular to the longitudinal direction. The pulling-out obstructing portion abuts on the rear wall of the bumper beam in the direction in which the bumper stay is pulled out from the hole portions.

Abstract: A high-strength steel sheet with excellent delayed fracture resistance, having a tensile strength of 1700 MPa or larger, including a predetermined component composition, having a martensite structure whose ratio accounts for 95 area % or more of the entire metallographic structure, and having a transition metal carbide whose ratio accounts for 0.8 volume % or more of the entire metallographic structure.

Abstract: An aluminum fin material includes an aluminum plate, an erosion-resistant coating layer on a surface of the aluminum plate, and a hydrophilic coating layer formed on a surface of the erosion-resistant coating layer. The erosion-resistant coating layer contains an acrylic resin and fluororesin particles, an amount of the erosion-resistant coating layer is 0.05 mg/dm2 or more and 8.00 mg/dm2 or less, and a content of the fluororesin particles in the erosion-resistant coating layer is 0.05 mass % or more and 8.00 mass % or less.

Abstract: A method includes, in a first furnace, melting 40% to 95% by mass of a solid-state direct reduced iron, and separating a molten pig iron having a carbon content of 2.0% to 5.0% by mass and a temperature of 1350 to 1550° C. and a slag having a basicity of 1.0 to 1.4. In a second furnace, a remainder of the solid-state direct reduced iron is melted together with the molten pig iron separated in the first furnace to form a molten material, and oxygen is blown onto the molten material to decarburize into a molten steel. The solid-state direct reduced iron includes 3.0% by mass or more of SiO2 and Al2O3 in total and 1.0% by mass or more of carbon. A ratio of a metallic iron to a total iron content contained in the solid-state direct reduced iron is 90% by mass or more.

Abstract: A vehicle structural member 1 includes a tube body having an expanded tube portion that is partially expanded, and a wall surface body having a first wall provided with a first through-hole, a second wall provided with a second through-hole, and a connecting wall connecting the first wall and the second wall. The tube body is inserted through the first through-hole and the second through-hole, and is joined to the wall surface body by being pressure welded to the first through-hole and the second through-hole. The expanded tube portion is provided only between the first wall and the second wall.

Abstract: This welding control device which controls a welding condition when arc welding is performed on a groove having a root gap, comprises: a first detection means for detecting, from a captured image of a fused section formed in the groove, the position of the tip of the fused section with respect to a direction in which the welding progresses; a second detection means for detecting the position of an end of a to-be-welded object for defining the root gap; a determination means for determining the relationship between the position of the end and the position of the tip of the fused section; and a control means for controlling the welding condition according to the determination result.

Abstract: A method for producing a molten steel may provide: solid-state direct reduced iron containing 3.0% by mass or more of SiO2 and Al2O3 in total and 1.0% by mass or more of carbon, a ratio of a metallic iron to a total iron content contained in the solid-state direct reduced iron being 90% by mass or more, and an excess carbon content Cx to the carbon contained in the solid-state direct reduced iron being 0.2% by mass or more. Such methods may include: a slag separation including heating the solid-state direct reduced iron and melting it in an electric furnace without introducing oxygen to separate into a molten steel and a slag, and continuously discharging the slag, and a decarburization including blowing, in the electric furnace, a total amount of oxygen introduced into the electric furnace to the molten steel to decarburize the molten steel after the slag separation.

Abstract: A weld line data generation device generates weld line data specifying a portion to be welded by a welding robot. The weld line data generation device includes: a recording unit in which possibility information indicating possibility of welding by the welding robot is recorded for each combination of configuration names of members; an extraction unit configured to extract a combination of two or more adjacent members from three-dimensional data of a structure to be manufactured by welding; and a generation unit configured to generate, when a combination of configuration names corresponding to the extracted combination of two or more members is weldable, the weld line data specifying a portion to be welded between the two or more members corresponding to the combination.

Abstract: The present invention is to reduce a disposal amount of pellet cooling water. A start-up method of a pellet production device includes a water supply step of supplying pellet cooling/transport water stored in a water tank to a water chamber by a pump and filling the water chamber before starting production of resin pellets, and then stopping supply of the pellet cooling/transport water so that a water surface of the pellet cooling/transport water becomes a target water level set to a position lower than an upper end portion of a return path.

Abstract: An aluminum alloy material having excellent high-temperature creep strength and a method for producing the aluminum alloy material. The aluminum alloy material has an alloy composition that includes 1.5-6.0 mass % of Cu, 1.0-4.0 mass % of Mg, 0.5-2.0 mass % of Fe, 0.5-2.0 mass % of Ni, 0.1-3.0 mass % of Si, 0.05-0.7 mass % of Mo, 0.01-0.3 mass % of Ti, and a remainder of Al and incidental impurities.

Abstract: A multi-joint-robot linear-member-shape simulator receives a position of at least one via point via which the linear member extends between a start-point position and an end-point position, an initial position of an adjustment via point that adjusts a length of the linear member, and an adjustment parameter of the adjustment via point, and repeatedly executes shape control for determining the shape of the linear member and a length adjustment for determining the length of the linear member when the linear member has the determined shape by using the input position of the via point and the input initial position of the adjustment via point as an initial value until a difference between an actual length of the linear member and the determined length thereof becomes smaller than or equal to a permissible value. When the shape control is to be executed, the adjustment parameter is changed.

Abstract: A method for controlling a welding robot or a control device relating to GMAW when a groove is provided in a material being welded, the compositions of the material being welded and a welding wire are different from one another, and the welding wire contains 5% or more of Ni, the method having: setting execution information that includes at least one from among the plate thickness, the groove depth, and the estimated welding metal height, as well as at least one from among the gap size and the groove width in a central position at a layer height calculated in advance; and calculating a weaving width before or during welding on the basis of the execution information and setting or correcting welding conditions including at least the weaving width.

Abstract: A door beam of a motor vehicle includes a 7000 series aluminum alloy extruded material, the 7000 series aluminum alloy extruded material including Zn: 7.5 mass % to 9.0 mass %, Mg: 1.3 mass % to 2.0 mass %, Cu: 0.1 mass % to 0.7 mass %, Si: 0.15 mass % or less, Fe: 0.3 mass % or less, Ti: 0.005 mass % to 0.2 mass %, and at least one of Mn, Cr, and Zr: 0.1 mass % to 0.5 mass %, in which contents of Mn, Cr and Zr satisfy Mn: 0.3 mass % or less, Cr: 0.25 mass % or less, and Zr: 0.25 mass %, respectively, with the remainder being Al and impurities. A Fe-based crystallized product is contained, and an average Cu content of the Fe-based crystallized product is 5.0 mass % or less.

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 welding system configured to weld a workpiece by using a welding device and a positioner includes a control device configured to control the welding device and the positioner. The positioner includes a workpiece position setting mechanism having reference position information, and at least one holding mechanism configured to hold the workpiece. The control device includes a positioner position calculation means for calculating a position of the holding mechanism when holding the workpiece based on the reference position information provided from the workpiece position setting mechanism and workpiece information inputted into the control device in advance.

Abstract: Provided is a hard coating film having excellent sand abrasion resistance. The present invention relates to a hard coating film (20) including a nitride containing Al and Cr as main components, the hard coating film (20) having a thickness of 6 ?m or more.

Abstract: A collision prediction method for predicting a collision between a multi-joint robot and a nearby object includes a first acquisition step of acquiring configuration information of the robot and posture information of the robot; a second acquisition step of acquiring point cloud data including the robot and the nearby object; a classification step of classifying the point cloud data acquired in the second acquisition step into point cloud data corresponding to the robot and point cloud data corresponding to the nearby object, based on the configuration information of the robot and the posture information of the robot; and a prediction step of predicting a collision between the robot and the nearby object, based on a classification result obtained in the classification step.