Abstract: A method for manufacturing an additively manufactured article, the method comprising subjecting a powder material comprising a first powder containing a precipitation hardening stainless steel and a second powder containing titanium carbide to weaving irradiation with a laser beam to melt and solidify the powder material, thereby laminating at least one hardened clad layer on a base material. In the step for laminating the clad layer, the following requirements are satisfied: 20?A?35, 1.1?B?1.3, and (40% by mass)?R2?(65% by mass). In the formulae, A represents a laser heat input index, B represents a powder feeding rate index, and R2 represents a content ratio of the second powder in the powder material.

Abstract: Provided is a linear motor capable of having enhanced thrust density. The linear motor includes a magnetic pole element and an armature including coils. The magnetic pole element includes magnetic pole element cores and permanent magnets. The magnetic element cores include first cores, second cores, third cores, and fourth cores, each aligned in the linear motion direction. The permanent magnets are interposed between mutually adjacent magnetic element cores among the magnetic element cores. The armature is divided into a first armature portion opposed to the first and third cores, a second armature portion opposed to the first and second cores, a third armature portion opposed to the third and fourth cores.

Abstract: A machine learning method includes: acquiring a state variable including at least one first evaluation parameter related to performance evaluation of a kneaded product and at least one kneading condition; calculating a reward for a decision result of the at least one kneading condition based on the state variable; updating a function for deciding the at least one kneading condition from the state variable based on the reward; and by repeating the update of the function, deciding a kneading condition under which the reward obtained becomes maximum, in which the at least one first evaluation parameter includes at least one of physical properties and shape characteristics related to the kneaded product.

Abstract: A method for producing a resistance-welded member made of three or more sheets including a plated steel sheet includes: a main energizing by performing energization with a first current value while compressing the steel sheet with a first compressive force to form a nugget; a subsequent energizing by performing, after the main energizing, energization such that the current value gradually decreases from the first current value while compressing with a second compressive force greater than the first compressive force; and holding an electrode while maintaining the second compressive force after the subsequent energizing. The second compressive force and a total sheet thickness, compression rise delay time, and a downslope time and an electrode holding time satisfy respective predetermined conditions.

Abstract: A molding method of an overlapped blank includes: preparing an overlapped blank including a first metal plate including a bulged excess portion, a first flat portion provided adjacent to the excess portion, and a second flat portion provided adjacent to the excess portion on an opposite side to the first flat portion, a flat second metal plate overlapped on the first flat portion and the second flat portion, a first joint portion where the first flat portion and the second metal plate are joined to each other, and a second joint portion where the second flat portion and the second metal plate are joined to each other; and bending the overlapped blank with the first metal plate being directed to an outer side of the bending of the overlapped blank.

Abstract: A method for producing a resistance-welded member made of three or more sheets including a plated steel sheet that includes: a first energizing with a first current value while compressing the steel sheets with a first compressive force to form a nugget; a subsequent energizing of, after the first energizing, energizing with a second current value smaller than the first current value while compressing the steel sheets with a second compressive force greater than the first compressive force; and holding an electrode by maintaining the second compressive force after the subsequent energization. The second compressive force and a total sheet thickness, the first current value and the second current value, and a subsequent energization time and an electrode holding time satisfy predetermined conditions respectively.

Abstract: The shape profile of an existing weld bead is measured by a non-contact type shape sensor provided integrally with a welding torch on a robot tip end shaft, midway through molding of a laminate molded object on the basis of a lamination trajectory plan. First geometric information relating to the bead shape is extracted from the shape profile and the target position of the welding torch, second geometric information corresponding to the first geometric information is extracted from the deposition track plan, and an offset amount is calculated from the first geometric information and the second geometric information. In accordance with the offset amount, the deposition track plan is updated by updating at least one of the bead height and the bead width of the weld bead determined by the deposition track plan, and the welding conditions are updated in accordance with the update result of the deposition track plan.

Abstract: A metal member according to the present invention is a metal member having a surface in contact with a rubber material, wherein at least a portion of the surface of the metal member in contact with the rubber material is formed from an alloy containing cobalt and chromium, and the metal member comprises a fluid passage for adjusting a temperature of the at least a portion of the surface of the metal member in contact with the rubber material.

Abstract: A circumferential welding method is a method for circumferentially welding at least one of a V-shaped groove and an I-shaped groove by, using a vertical articulated robot, moving a welding torch with the welding torch directed downward. The circumferential welding is performed by moving the welding torch so as to draw a circular trajectory while adjusting a rotation angle of the welding torch in such a manner that a rotation center of a wrist of a robot main body of the vertical articulated robot is located at all times on a side where the robot main body is installed relative to the welding torch.

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 method for producing a steel includes preparing a steel sheet having a chemical composition in % by mass of: C: 0.05 to 0.40%, Si: 0 to 2.0%, Mn: 1.0 to 3.0%, Al: 0.010 to 1.0%, P: more than 0% and 0.100% or less, S: more than 0% and 0.010% or less, N: more than 0% and 0.010% or less, B: 0.0005 to 0.010%, and iron; heating the steel sheet to Ac1 point (° C.) or higher and lower than Ac3 point (° C.)+10° C.; processing the steel sheet by applying a strain of 0.5% or more thereto at 675° C. or higher and lower than Ac3 point+10° C.; holding or gradually cooling the steel sheet at an average cooling rate of 0 to 15° C./sec for 1 second or more and 120 seconds or less; and cooling the steel sheet to Ms point (° C.)?50° C.

Abstract: A method for producing an additively-manufactured article includes: a step for feeding a powdered material onto a base metal, the powdered material being obtained by mixing a first powder containing a stellite alloy and a second powder containing tungsten carbide; a nd a step for irradiating the fed powdered material with a laser beam while weaving the lase r beam, and depositing a cladding layer, obtained by melting and solidifying at least the pow dered material, on the base metal. The step for depositing the cladding layer is performed such that 20?A?35, 2.2?B?2.9, and 5 mass%?R2?15 mass% are satisfied, where A is a laser heat input index, B is a powder feeding rate index, and R2 is the ratio of the second powder contained in the powdered material.

Abstract: A machine learning method includes: calculating a reward for a result of decision of a cold isostatic pressing process condition based on an acquired state variable; updating, based on the reward, a function to decide at least one cold isostatic pressing process condition from the state variable; and deciding a cold isostatic pressing process condition which yields a highest reward, by repeating update of the function. The cold isostatic pressing process condition is at least one of a first parameter related to an object to be processed, a second parameter related to a preceding process of a cold isostatic pressing process, and a third parameter related to operating conditions of a cold isostatic pressing apparatus, and the at least one physical amount is related to at least one of sterilization and inactivation, shucking, improvement of taste and flavor, and improvement of texture and nourishment of the object to be processed.

Abstract: A joining method of a structure includes preparing a first member including a first portion provided with a first hole and a second portion provided with a second hole, a second member, a die, and an elastic member, inserting the second member into the first hole, inserting the elastic member into the second member, in a state where one end of the second member in an axial direction is located between the first portion and the second portion, compressing and expanding the elastic member in the axial direction, thereby expanding and deforming the second member at a portion passing through the first hole to be swaged and joined to the first portion. The die includes a support surface for applying a compressive force from the die to the elastic member through the second hole. The support surface is perpendicular to an axial direction of the elastic member.

Abstract: An arc welding solid wire includes: a steel material; and a copper plating layer formed on a surface of the steel material, in which an amount of Cu in the steel material and the copper plating layer is 0.05 mass % to 0.30 mass % with respect to a total mass of the wire, a surface of the wire is coated with 0.05 g to 0.20 g of oil with respect to 1 kg of the wire, and on a surface of the copper plating layer, an arithmetic average roughness Rac in a circumferential direction is 0.25 µm to 1.00 µm, and an arithmetic average roughness Ral in a longitudinal direction is 0.07 µm to 0.50 µm.

Abstract: An aluminum alloy brazing sheet including a core material, a sacrificial material provided on one surface of the core material, a brazing filler material provided on the other surface side of the core material, and an intermediate layer provided between the core material and the brazing filler material. The core material contains Si: 0.30 to 1.00 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.60 to 1.20 mass %, Mg: 0.05 to 0.80 mass %, and Al. The sacrificial material contains Si: 0.10 to 1.20 mass %, Zn: 2.00 to 7.00 mass %, Mn: 0.40 mass % or less, and Al. The intermediate layer contains Si: 0.05 to 1.20 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.10 to 1.20 mass %, and Al.

Abstract: A zinc-plated steel sheet for hot stamping according to an aspect of the present invention includes a base steel sheet satisfying a predetermined composition of chemical components, wherein an amount of solid-soluted B is 10 ppm or more and the base steel sheet has a hot-dip galvannealed layer or a hot dip galvanized layer on at least one face thereof.

Abstract: Molding accuracy of a metal member is improved in an apparatus, a mold set, and a method for producing a metal-resin composite with a set of molds. An apparatus for manufacturing a metal-resin composite by press molding a metal member and a resin material, the apparatus including a mold including an upper mold and a lower mold sandwiching the metal member and the resin material, a molding auxiliary component detachably fixed to the upper mold so as to fill at least a part of a cavity C for arranging the resin material formed by the upper mold and the lower mold, and a drive unit that moves at least one of the upper mold and the lower mold in a vertical direction. The molding auxiliary component has a first press surface for molding the metal member. The upper mold has a second press surface for integrally molding the metal member and the resin material.

Abstract: A flux for electroslag welding used for electroslag welding may include a basic oxide, an amphoteric oxide, an acidic oxide, and a fluoride. With respect to a total mass of the flux, the basic oxide may include 5.1 mass % or more and 30.0 mass % or less of CaO, the acidic oxide includes 17 mass % or less of SiO2, and the fluoride includes 35 mass % or more and 73 mass % or less of CaF2. A content of the CaO is 30 mass % or more with respect to a total mass of the basic oxide, a content of the SiO2 is 80 mass % or more with respect to a total mass of the acidic oxide, a content of the CaF2 is 80 mass % or more with respect to a total mass of the fluoride, and a value of (2×[CaF2]+[CaO])/[SiO2] is 5 or more and 56 or less.

Abstract: A resistance spot welding method for spot welding plural steel sheets including at least one galvanized steel sheet containing 0.08 mass % or more of C and 0.50 mass % or more of Si and having a tensile strength of 980 MPa or more, the resistance spot welding method includes, using a pair of electrodes including a pair of electrode tips configured to sandwich and pressurize the plural steel sheets and a pressurizing force absorbing mechanism provided in at least one of the pair of electrode tips and capable of absorbing a pressurizing force in an axial direction of the electrode tips, welding by sandwiching the plural steel sheets between the pair of electrode tips and energizing the pair of electrode tips with a pressurizing force applied, while absorbing a fluctuation load of the pressurizing force generated during the energization by the pressurizing force absorbing mechanism.