Abstract: A liquid separation constituent is used by covering a first element portion having a fiber layer for separating liquid from gas discharged from a compressor, and includes a second element portion, a holding portion, and a non-element portion. The second element portion is a tubular portion having a fiber layer that is disposed on the outer side in the radial direction so as to surround the first element portion when the second element portion covers the first element portion and further separates liquid from gas separated by the first element portion. The holding portion is a portion that holds the second element portion such that a gap is formed between the first element portion and the second element portion in the radial direction. The non-element portion is a portion configured to suppress liquid seeping out from a lower portion of the first element portion from scattering to the second element portion.

Abstract: A liquid separation constituent is used with being attached to a top plate to and from which a first element portion is attachable and detachable, and includes a second element portion having a fiber layer, an annular first attachment portion to which an upper end portion of the second element portion is attached, and a second attachment portion to which a lower end portion of a second element portion is attached. The first element portion includes an abutting portion abutting on the top plate and an insertion portion inserted into a through hole of the top plate. The first attachment portion includes a hole portion into which the insertion portion of the first element portion removed from the top plate is insertable, and an annular abutting portion abutting on a lower surface of the top plate from which the first element portion is removed.

Abstract: An additively manufacturing method includes: measuring a filler metal feed speed at which the filler metal is fed to the welding torch during the formation of the weld bead; acquiring a reference welding speed that is a moving speed of the welding torch corresponding to the measured filler metal feed speed; measuring a height of the formed weld bead; acquiring a welding speed correction value with which the height of the weld bead to be formed is adjusted based on a difference between the measured height of the weld bead and a height of a tip of the filler metal that protrudes from the tip of the welding torch; correcting the reference welding speed with the welding speed correction value and determining a welding speed at which the weld bead is formed; and forming the weld bead at the determined welding speed.

Abstract: A method for manufacturing a steel sheet, including annealing a steel raw material having an Si content of 1.0 mass % or more and a Cr content of 1 mass % or less, under a condition satisfying: a following formula 1A if the Cr content of the steel raw material is 0.2 mass % or more and 0.6 mass % or less: 0.19 ? exp ? ( - 10770 T + 273 ) * t ? 0.75 Cr [ % ] + 0.48 Formula ? 1 ? A a following formula 1B if the Cr content of the steel raw material is less than 0.2 mass %: 0.19 ? exp ? ( - 10770 T + 273 ) * t ? 0.63 Formula ? 1 ? B or a following formula 1C if the Cr content of the steel raw material is more than 0.6 mass % and 1.0 mass % or less: 0.19 ? exp ? ( - 10770 T + 273 ) * t ? 0.93 Formula ? 1 ? C where in the formulas 1A, 1B, and 1C, T is 500° C. or higher and a soaking temperature (° C.

Abstract: A steel wire for machine structural parts, including respective predetermined contents of C, Si, Mn, P, S, Al, Cr, N, and iron, wherein when a total content of Cr and Mn (% by mass) in cementite in the metallurgical microstructure is expressed as {Cr+Mn}, a total content of Cr and Mn (% by mass) in steel is expressed as [Cr+Mn], and a C content (% by mass) of the steel is expressed as [C], a concentration ratio {Cr+Mn}/[Cr+Mn] is (0.5[C] +0.040) or more, and an average circular-equivalent diameter of all the cementite is (1.668-2.13[C]) ?m or more and (1.863-2.13[C]) ?m or less.

Abstract: A steel wire for machine structural parts, may include Fe, inevitable impurities, and, by mass: 0.05 to 0.60% C; 0.005 to 0.50% Si; 0.30 to 1.20% Mn; more than 0 to 0.050% P; more than 0 to 0.050% S; 0.001 to 0.10% Al; more than 0 to 1.5% Cr; and more than 0 to 0.02% N. An area of cementite present at ferrite grain boundaries in an area of all cementite of the steel wire may be 32% or more. When a C content (% by mass) of a steel is expressed as [C], an average circular-equivalent diameter of all the cementite is (1.668-2.13 [C]) ?m or more and (1.863-2.13 [C]) ?m or less.

Abstract: A method for producing pig iron using a blast furnace containing a tuyere, including stacking a first layer including an iron ore material and a second layer including coke alternately in the blast furnace, charging the coke to a central portion of the blast furnace, and reducing and melting the iron ore material in the first layer while injecting an auxiliary reductant into the blast furnace by hot air blown from the tuyere. In the stacking, the charging of the coke is carried out once or a plurality of times during one charge of stacking a stacking unit composed of one of the first layer and one of the second layer, and a ratio R of a mass (ton/ch) of the coke accumulated in the central portion to a mass of the iron ore material charged in the one charge is greater than or equal to a predetermined value a.

Abstract: A method for producing a hot-rolled steel sheet which enables predicting a temperature history of unevenness of the end face of a coil includes: measuring a surface temperature of hot-rolled strip-shaped steel; calculating a temperature history in a natural cooling state after coiling, assuming that the strip-shaped steel has been coiled without unevenness on an end face, based on the surface temperature measured in the measurement step; actually coiling the strip-shaped steel after the measurement step; scanning with a displacement meter, an end face of a coil formed in the coiling step, and deriving a size of the unevenness of the end face over a radius of the coil; and predicting a temperature history of the unevenness in a natural cooling state using: the temperature history calculated in the first calculation step; and the size of the unevenness derived in the derivation step.

Abstract: A method for producing pig iron may use a blast furnace with a tuyere. Such a method may include: 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. An aggregate containing a reduced iron molded product obtained through compression molding of reduced iron may be blended into the first layer. The iron ore material may contain iron ore pellets as a principal material. An average basicity of the reduced iron molded product may be less than or equal to 0.5, and an average basicity of the iron ore pellets may be greater than or equal to 0.9.

Abstract: A resistance welding method for joining together a first member and a second member with an element including a head portion and a shaft portion. The method includes: contacting the shaft portion with the first member to stack the element, the first member, and the second member in this order; sandwiching and pressurizing the element, the first member, and the second member with a pair of electrodes while pressurizing at least one of the element or the first member with an external pressurizing jig disposed around at least one electrode of the pair of electrodes that is closer to the element; and melting the first member by energization of the pair of electrodes while maintaining pressurization with the pair of electrodes and the external pressurizing jig so that the element penetrates the first member to weld the element and the second member together.

Abstract: A method for producing iron ore pellets for operation of a blast furnace, where the iron ore pellets have a CaO/SiO2 mass ratio greater than or equal to 0.8 and a MgO/SiO2 mass ratio greater than or equal to 0.4, the method including balling green pellets by adding water to an iron ore material and dolomite and firing the green pellets. The dolomite is in a miniaturized state in a structure of the green pellets.

Abstract: An aluminum alloy extruded material including: Zn: 7.5 to 9.2% by mass; Mg: 1.3 to 2.0% by mass; Cu: 0.1 to 0.7% by mass; one or more elements selected from the group consisting of Mn: 0.30% by mass or less, Cr: 0.25% by mass or less, and Zr: 0.25% by mass or less, totaling 0.1 to 0.5% by mass; and Ti: 0.005 to 0.20% by mass, and Al. An average spacing of grain boundary precipitates is 0.8 to 1.4 ?m, an average particle length of the grain boundary precipitates is 0.3 to 0.5 ?m, and a proof stress is 440 N/mm2 or more.

Abstract: A cold-workable mechanical structural steel may include: C: 0.30 to 0.45 mass %; Si: 0.10 to 0.40 mass %; Mn: 0.50 to 1.00 mass %; P: 0.050 mass % or less; S: 0.050 mass % or less; Cr: 0.80 to 1.30 mass %; Al: 0.01 to 0.10 mass %; and a balance of iron and inevitable impurity, the steel having an area percentage of pro-eutectoid ferrite of 10% or larger and 70% or smaller; containing at least one selected from the group consisting of bainite, martensite, and pearlite; and having a dislocation density of 3.5×1014 m?2 or larger.

Abstract: A steel sheet may be used for hot-dip galvanizing capable of manufacturing hot-dip galvannealed steel sheet(s) with a high Si content and in which alloying unevenness is suppressed. Such a steel sheet for hot-dip galvanizing may include an internal oxide layer containing an oxide of Si between a surface layer of the steel sheet and a steel sheet base portion. The Si content in a chemical composition of the steel sheet may be 1.0 mass % or more. A solid solution Si amount from a surface of the steel sheet to a depth of 1 ?m measured at all four positions including positions of 10 mm, 30 mm, and 50 mm from an edge in a coil width direction and a position of a center in the coil width direction at a rear end in a rolling direction of the steel sheet for hot-dip galvanizing may be 1.4 wt. % or less.

Abstract: The battery case includes a frame body having a rectangular frame shape and a support plate provided at a lower portion of the frame body and supporting the battery. Each of the pair of side frames includes a base portion constituting an inner peripheral surface of the frame body and an inner protruding portion protruding inward in the vehicle width direction from a lower end of the base portion, and the support plate is supported on the inner protruding portion. The battery case includes a refrigerant passage including an in-frame passage which is provided in the inner protruding portion, and is disposed on an inner side in the vehicle width direction with respect to the inner peripheral surface of the base portion and below the support plate.

Abstract: The arc spot welding method for joining dissimilar materials, in which a first sheet (10) made of an Al-based material or an Mg-based material and a second sheet (20) made of ultra-high tensile steel having a tensile strength of 1180 MPa or more are joined, includes a step of forming a hole in the first sheet (10), a step of overlapping the first sheet (10) and the second sheet (20), a step of inserting a joining auxiliary member (30) made of steel, in which a hollow portion is formed, into the hole of the first sheet (10), and a step of joining the first sheet (10) and the second sheet (20) via the joining auxiliary member (30) using a welding material containing 13 mass % or more of Ni.

Abstract: A structure includes: a first member made of metal having a tubular shape, and having a through-insertion hole; a second member made of resin and joined to the first member; and a third member made of metal having a tubular shape, and inserted through inside the first member. The third member is tube-expanded toward the first member and joined to the first member by press-fitting.

Abstract: A method for manufacturing a hot-dip galvanized steel sheet having a high Si content and good plating adhesion. The method for manufacturing a hot-dip galvanized steel sheet includes the following: hot-rolling a steel raw material having a Si content of 1.0 mass % or more and coiling a steel sheet at 500° C. to 700° C.; subjecting a surface of the steel sheet after the coiling to an oxidation treatment at a heating temperature of a steel sheet temperature of 750° C. or lower, and subsequently subjecting the surface to a reduction treatment; and subjecting the steel sheet after the reduction treatment to a hot-dip galvanizing treatment to form a Zn-plated layer on a surface of the steel sheet.

Abstract: A deposition planning method for an additively manufactured object includes: acquiring shape data; determining a welding path of each layer by slicing a three-dimensional shape of the additively manufactured object into layers; classifying a plurality of welding paths into intersection region paths and constant region paths; dividing the intersection region paths into a lower layer path and an upper layer path of an intersection portion; and determining welding conditions of the intersection region paths such that an upper layer deposit amount is more than a lower layer deposit amount, a sum of the upper layer deposit amount and the lower layer deposit amount is equal to a deposit amount in the constant region paths, and in a cross-section orthogonal to a longitudinal direction of the weld beads formed along the upper layer path, profiles of the weld beads adjacent to each other overlap each other.

Abstract: A TiAl alloy material containing: Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, and lamellar grains have an average grain size of 20 ?m or more and 200 ?m or less.