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 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: 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 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.

Abstract: This spot welding method for an aluminum material comprises: a processing step in which, in a plan view, a circular emboss expanded in a direction of superposition on a second aluminum plate side is formed at a position-to-be-welded of a first aluminum plate; an arrangement step in which positions-to-be-welded are superimposed while the expansion side of the emboss faces the second aluminum plate, and the positions-to-be-welded are arranged between a pair of electrodes; a pressing step in which the superimposed aluminum plates are pinched between the electrodes, and a central side excluding a peripheral edge of the emboss is pressed; and an electrification step of performing pressing and electrification. An electrode having a tip diameter larger than the diameter of a root part of the expansion part of the emboss is used.

Abstract: A bearing abnormality detection device and a bearing abnormality detection method in the present invention include: obtaining a frequency spectrum of vibration data of a vibration in a rolling bearing; detecting, from the obtained frequency spectrum, a peak frequency within a predetermined frequency range including a theoretical frequency showing a peak on the frequency spectrum in an occurrence of an abnormality; and determining whether an abnormality is present on the basis of a chronological frequency change amount that is a difference between a preset reference frequency being a reference of the peak frequency and the detected peak frequency.

Abstract: A robot slider position setting device sets a position of a robot slider that moves while being loaded with a robot that performs predetermined work on a workpiece by using a tool provided at a distal end of the robot. The robot slider position setting device includes an interference-region-information storage unit that stores interference region information indicating an interference region with which the robot interferes in a predetermined ambient environment, an approaching-direction determination unit that determines a direction of an arm of the robot as an arm approaching direction such that the direction does not overlap the interference region by fixing a wrist rotation center of the robot in a state where the tool is in an orientation according to a predetermined working position, and a position determination unit that determines the position of the robot slider based on the arm approaching direction determined by the approaching-direction determination unit.

Abstract: Reduced workload on a user can be achieved when a sensing-related teaching program is to be generated. A method for generating a teaching program that defines sensing operation includes a setting step for setting a sensing position at a surface of a workpiece, and a generating step for generating a teaching program of the sensing operation based on the sensing position set in the setting step. The sensing position is set within a range in which a maximum permissible amount for an error of the workpiece and a permissible range preliminarily defined with respect to a direction of the error are included in the surface.

Abstract: This welding state determination system acquires, for each weaving cycle, a characteristic amount that pertains to a physical quantity that changes according to the cycle of a weaving operation. A degree of abnormality is calculated based on an observation value that is the characteristic amount acquired in one cycle, and the average and standard deviation of a plurality of past values that are the characteristic amounts acquired prior to the one cycle. A welding state is determined based on the calculated degree of abnormality.

Abstract: A welding power source is configured to supply a welding current to a wire as a consumable electrode. The welding power source includes a controller configured to change the welding current based on a position of a distal end of the wire a distance from which to a surface of a base metal varies periodically, in a case where the distal end of the wire is fed toward the base metal with periodical switching between a forward feeding period and a reverse feeding period.

Abstract: A learning device includes: a data acquisition unit configured to acquire information on a welding condition when beads are deposited, a dimension related to a narrow portion forming a valley portion in a surface shape of an additively manufactured object before the beads are deposited, a positional relation between the narrow portion and a target position of the bead, and a defect size of an unwelded defect; and a learning unit configured to generate the estimation model by learning a relation between the welding condition, the dimension related to the narrow portion and the positional relation, and the defect size. The dimension related to the narrow portion includes at least one of a bottom width, an opening width representing an interval between top portions on both sides, both sides, and a valley depth from the top portion to a bottom of the valley portion.

Abstract: A first member provided with a hole, a second member having a tubular shape, and a composite elastic body obtained by combining at least two types of elastic bodies having different hardness are prepared, the second member is inserted into the hole of the first member, the composite elastic body is inserted into the second member, and the composite elastic body is pressed to cause the second member to bulge out, thereby joining the first member and the second member by press-fitting.

Abstract: A method for producing a frame structure contains a hollow member having a curved and long shape, and a plurality of connecting members welded to the hollow member along a longitudinal direction of the hollow member. Each of the connecting members is welded to the hollow member, and a cooling medium is introduced into the inside of the hollow member through an end of the hollow member after the welding. The welding and the introducing are conducted repeatedly in the number of the connecting members.

Abstract: The present invention relates to a flux-cored wire for positive polarity gas-shielded arc welding use, in which a flux contains a metal powder and also contains BaF2 and SrF2 and AlF3 and/or CaF2 as fluorides wherein the content of BaF2 is 1.0 to 4.5%, the content of SrF2 is 2.0% or less, the content of CaF2 is 0.45% or less and the content of AlF3 is 0.70% or less, at least one of metal elements constituting the flux and the fluorides is a strong deoxidizing metal element having a specified standard formation Gibbs energy, and the content of each of an oxide and a carbonate in the flux is 0.5% or less.

Abstract: A pulse arc welding profile control method, a control device, a welding system, a welding program, and a welding power supply are provided in which, even when a pulse arc welding method is used, protruding change information is extractable at high accuracy without influence from a welding current or an arc voltage having a pulse shape. An electric change amount detected at the time of weaving includes, as a parameter, at least one among a welding current detection signal and an arc voltage detection signal, takes a predetermined period as one period, calculates an average value of the electric change amount in each one period, and extracts, on the basis of the average value, the protruding change information in a groove to follow a welding line.

Abstract: A blast furnace operation method according to one aspect of the present invention includes: a process of acquiring a correlation between a carbon consumption in reducing gas and a reduction Input?C in specific carbon consumption caused by blowing the reducing gas into the blast furnace per molar ratio C/H of carbon atoms to hydrogen atoms in the reducing gas; a process of determining a carbon consumption in the reducing gas where the reduction Input?C in specific carbon consumption is a predetermined target value or higher on the basis of the correlation acquired per C/H; and a process of adjusting the amount of the reducing gas blown into the blast furnace on the basis of the determined carbon consumption in the reducing gas and the carbon proportion in the reducing gas.

Abstract: A work measuring method for measuring a work including a columnar member and a diaphragm and held by a positioner includes an acquiring step of acquiring point cloud data on a surface of the work held by the positioner and photographed in a predetermined direction, a detecting step of identifying a portion where distribution of the point cloud data changes in a three-dimensional coordinate system of the positioner and detecting the portion as a boundary position between the columnar member and the diaphragm, and a deriving step of deriving the number of columnar members and diaphragms included in the work on the basis of the boundary position detected in the detecting step.

Abstract: A welding torch includes a torch barrel to which a tip body is attached, and an external cylinder. The torch barrel has outer and inner barrel cylinders. An outer peripheral surface of the inner barrel cylinder is provided with coolant supply and recovery channels. The inner barrel cylinder has an inner-cylinder exposure section. A base end of an outer peripheral surface of the inner-cylinder exposure section is provided with supply and recovery openings. An axial distal end of the inner-cylinder exposure section is provided with a connection section that is connected to the tip body such that the tip body covers an outer periphery of the inner-cylinder exposure section. At least the connection section and the supply and recovery openings are disposed within the external cylinder. A seal section hermetically seals between the external cylinder and the tip body and between the external cylinder and the outer barrel cylinder.

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 reward for a decision result of an isostatic pressurization processing condition is calculated based on a state variable including at least one physical quantity related to a workpiece and at least one isostatic pressurization processing condition, a function for deciding at least one isostatic pressurization processing condition from the state variable is updated based on the reward, and updating of the function is repeated to decide an isostatic pressurization processing condition that maximizes the reward. The isostatic pressurization processing condition is at least one of a first parameter related to the workpiece, a second parameter related to a pre-process of the isostatic pressurization processing, and a third parameter related to an operating condition of an isostatic pressurization device, and the at least one physical quantity is at least one of physical quantities related to densification and green compaction of the workpiece.