Abstract: To provide a hot forging die made of a Ni-based superalloy, which is free from any deteriorations in working environment and die shape during hot forging in the air, and also provide a manufacturing process for a forged product using the same and a manufacturing process for a hot forging die. The hot forging die includes: a base body made of a Ni-based superalloy consisting of, by mass, 10.3 to 11.0% of W, 9.0 to 11.0% of Mo, and 5.8 to 6.8% of Al and balance of Ni with inevitable impurities; and a coating layer of inorganic material that is formed on at least one of a forming surface and a side surface of the die and contains 30 mass % or more in total of one or more of Si, Cr, and Al out of Si and metal elements.

Abstract: An insulated wire having an electrical wire structure capable of reducing an outer diameter while an insulation property and a flame-retardant property are highly kept is provided. In the insulated wire including: a conductor; and a coating layer arranged on an outer periphery of the conductor, the coating layer includes: a semiconductive layer having a volume resistivity defined by JIS C2151 that is equal to or smaller than 1.0×1015 (?cm); an insulating layer arranged on an outer periphery of the semiconductive layer, the insulating layer having a volume resistivity defined by JIS C2151 that is larger than 5.0×1015 (?cm); and a flame-retardant semiconductive layer arranged on an outer periphery of the insulating layer, the flame-retardant semiconductive layer having a volume resistivity defined by JIS C2151 that is equal to or smaller than 1.5×1015 (?cm) and having an oxygen index defined by JIS K7201-2 that is larger than 40.

Abstract: A powder magnetic core manufacturing method includes: a first step of mixing a binder with a soft magnetic material powder containing Fe-M (M: Al or Cr)-based alloy particles on which an insulating layer is formed; a second step of filling a pressing die with a mixture obtained through the first step, subjecting the mixture to pressing to obtain a green compact, and slidingly demolding the green compact from the pressing die; a third step of processing the green compact after the second step and removing expansion deformed matter of the alloy particles present in a region of pressing flaws formed on a surface of the green compact during the slidingly demolding; and a fourth step of subjecting the green compact after the third step to heat treatment to oxidize surfaces of the Fe-M (M: Al or Cr)-based alloy particles at high temperature, so that the oxide phase is formed.

Abstract: A composite roll for rolling comprising an outer layer and an inner layer integrally fused to each other; the outer layer being made of an Fe-based alloy comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.1-5% of Ni, 1-7% of Cr, 1-8% of Mo, 4-7% of V, 0.005-0.15% of N, and 0.05-0.2% of B; the inner layer being made of graphite cast iron comprising by mass 2.4-3.6% of C, 1.5-3.5% of Si, 0.1-2% of Mn, 0.1-2% of Ni, less than 0.7% of Cr, less than 0.7% of Mo, 0.05-1% of V, and 0.01-0.1% of Mg; the inner layer comprising a core portion fused to the outer layer, and shaft portions integrally extending from both ends of the core portion; at least one of the shaft portions containing 200/cm2 or more of hard MC carbides having circle-equivalent diameters of 5 ?m or more.

Abstract: A composite cemented carbide roll comprising an inner layer made of an iron-based alloy, and an outer layer made of cemented carbide which is metallurgically bonded to an outer peripheral surface of the inner layer; the cemented carbide of the outer layer comprising 55-90 parts by mass of WC particles and 10-45 parts by mass of an Fe-based binder phase having a particular composition; a shaft member and a shaft end member being metallurgically bonded to at least one axial end of the inner layer; the inner layer being made of an iron-based alloy containing 2.0% or more in total by mass of at least one selected from the group consisting of Cr, Ni and Mo; and the shaft member and the shaft end member being made of an iron-based alloy containing 1.5% or less in total by mass of at least one selected from the group consisting of Cr, Ni and Mo.

Abstract: Provided is an abrasion test apparatus for measuring an abrasion state of a workpiece, including: a workpiece holding mechanism holding the workpiece; a contact tool repeatedly making contact and non-contact with the workpiece; a rotating mechanism holding the contact tool to be freely rotatable; and a heating mechanism intermittently heating an end portion of the contact tool.

Abstract: A distribution member includes plural electric wire pairs each including a pair of electric wires, a first fixing member integrally fixing the electric wire pairs, and a second fixing member that is separated from the first fixing member and integrally fixes electric wires of at least one of the electric wire pairs. The first fixing member and the second fixing member each include a holder holding the electric wires and a resin mold part that includes a molding resin and is molded so as to cover a part of the electric wire pairs held by the holder. The holder includes at least one interposed part that is interposed between the held electric wires. The distribution member further includes a combining part that is integrally formed with the holders of the first and second fixing members and combines the holders of the first and second fixing members.

Abstract: A pipe joint includes a hollow joint main body; a nut that is screwed into the joint main body; a seal member that is mounted to inside of the joint main body; and a retainer that is placed between the joint main body and the nut and comprises a pawl portion engaged with a trough of a metal flexible pipe in a coupled state and a retainer locking portion caught and locked inside of the joint main body in the coupled state.

Abstract: A sintered R-T-B based magnet includes a main phase crystal grain and a grain boundary phase, in which R: not less than 27.5 mass % and not more than 35.0 mass % (R always includes at least Nd and Pr); B: not less than 0.80 mass % and not more than 1.05 mass %; Ga: not less than 0.05 mass % and not more than 1.0 mass %; M: not more than 2 mass % (where M is at least one of Cu, Al, Nb, and Zr); and a balance T (where T is Fe, or Fe and Co) and impurities. At 300-?m depth from the magnet surface, a Pr/Nd ratio in a central portion of a main phase crystal grain is lower than 1, and a Pr/Nd ratio in an intergranular grain boundary is higher than 1. The Ga concentration gradually decreases in a portion of the magnet from the surface toward the interior.

Abstract: A proportional solenoid (100) of the present invention includes a tubular member (101) in which a first magnetic region (12a) mainly including a ferrite structure, a first semimagnetic region (14a) present at a position spaced apart from an adsorptive surface (11b), the first semimagnetic region including a ferrite structure, a martensite structure, and an austenite structure, and a nonmagnetic region (13) present at a position spaced farther apart from the adsorptive surface than the semimagnetic region, the nonmagnetic region mainly including an austenite structure, are formed continuously and integrally.

Abstract: A casting apparatus for producing a casting by pouring a metal melt into a gas-permeable casting mold by gravity, comprising: a gas-permeable casting mold comprising a cavity including a sprue composed of a tubular portion and a cup portion having a larger diameter than that of the tubular portion to receive the metal melt, a runner constituting a flow path of the metal melt supplied through the sprue, and a product-forming cavity to be filled with the metal melt sent through the runner; a means for pouring the metal melt into the sprue by gravity; a gas-blowing unit comprising a gas-ejecting member to be connected to the sprue; and a mechanism for moving the gas-ejecting member; the gas-ejecting-member-moving mechanism placing the gas-ejecting member at a position just above the tubular portion and not interfering with gravity pouring of the metal melt, and moving it downward for connection to the tubular portion; the gas-blowing unit having blowing a gas to fill the product-forming cavity with the metal mel

Abstract: The method manufactures a hermetic sealing lid member used for an electronic component housing package including an electronic component arrangement member on which an electronic component is arranged. The method includes forming a clad material in which a silver brazing layer that contains Ag and Cu and a first Fe layer arranged on the silver brazing layer and made of Fe or an Fe alloy are bonded to each other by roll-bonding a silver brazing plate that contains Ag and Cu and a first Fe plate made of Fe or an Fe alloy to each other and performing first heat treatment for diffusion annealing; softening the clad material by performing second heat treatment; and forming the hermetic sealing lid member in a box shape including a recess portion by bending the softened clad material.

Abstract: A sintered R-T-B based magnet work contains R: 27.5 to 35.0 mass % (R is at least one rare-earth element which always includes Nd), B: 0.80 to 0.99 mass %, Ga: 0 to 0.8 mass %, M: 0 to 2 mass % (M is at least one of Cu, Al, Nb and Zr), and a balance T (T is at least one transition metal element which always includes Fe, with 10% or less of Fe replaceable by Co). [T]/55.85>14[B]/10.8 is satisfied where [T] is the T content (mass %) and [B] is the B content (mass %). At least a portion of a Pr—Ga alloy is in contact with a portion of the sintered magnet work surface, and a first heat treatment is performed at a temperature between 600° C. and 950° C. A second heat treatment is performed at a temperature lower than the temperature of the first heat treatment and between 450° C. and 750° C.

Abstract: A Fe-based nanocrystalline alloy powder having an alloy composition represented by the following Composition Formula (1) and having an alloy structure including nanocrystal particles: Fe100-a-b-c-d-e-f-gCuaSibBcModCreCfNbg ??Composition Formula (1), in which 100-a-b-c-d-e-f-g, a, b, c, d, e, f, and g each represent a percent (%) by atom of a relevant element, and a, b, c, d, e, f, and g satisfy 0.10?a?1.10, 13.00?b?16.00, 7.00?c?12.00, 0.50?d?5.00, 0.001?e?1.50, 0.05?f?0.40, and 0?(g/(d+g))?0.50, in Composition Formula (1).

Abstract: A thermoelectric conversion material having a high dimensionless figure of merit ZT includes: a large number of polycrystalline grains which include a skutterudite-type crystal structure containing Yb, Co, and Sb; and an intergranular layer which is between the neighboring polycrystalline grains and includes crystals in which an atomic ratio of O to Yb is more than 0.4 and less than 1.5. A method for manufacturing a thermoelectric conversion material includes: a weighing step; a mixing step; a ribbon preparation step by rapidly cooling and solidifying a melt of the raw materials by using a rapid liquid cooling solidifying method; a first heat treatment step including heat treating in an inert atmosphere with an adjusted oxygen concentration; a second heat treatment step including heat treating in a reducing atmosphere; and manufacturing the thermoelectric conversion material by a pressure sintering step in an inert atmosphere.

Abstract: Making a positive electrode active material for lithium ion secondary batteries includes: weighting and mixing lithium carbonate and a compound containing respective metallic elements other than Li in a composition formula Li?NixCoyM21-x-y-zM2zO2+? so as to have a metallic constituent ratio of the formula to obtain a mixture, and firing the mixture to obtain a lithium composite compound. Performing, on the mixture, a first heat treatment at 200° C. to 400° C. for 0.5 to 5 hours to obtain a first precursor. A step of performing a heat treatment on the first precursor under an oxidizing atmosphere at 450° C. to 800° C. for 0.5 to 50 hours, and reacting 92 mass % or more of the lithium carbonate to obtain a second precursor, and a finishing step of performing a heat treatment on the second precursor under an oxidizing atmosphere at 755° C. to 900° C. for 0.5 to 50 hours to obtain the lithium composite compound.

Abstract: A linear shape member is composed of a linear shape electrical insulating body made of a fluoropolymer resin and including a plurality of crack shape grooves on a surface thereof, and a plating layer coating the surface of the electrical insulating body. The surface of the electrical insulating body meets at least either one of two conditions: that the surface of the electrical insulating body is not lower than 40 nm in arithmetic mean roughness Ra; and that the surface of the electrical insulating body is not lower than 80 nm in root mean square roughness Rms.

Abstract: The present invention is to provide a cathode active material used for a lithium ion secondary battery which has a large charge-discharge capacity, and excels in charge-discharge cycle properties, output properties and productivity, and, a lithium ion secondary battery using the same. The cathode active material used for a lithium ion secondary battery comprises a lithium-transition metal composite oxide having an ?-NaFeO2 type crystal structure and represented by the following formula (1); Li1+aNibCocMdO2+?, where, in the formula (1), M is at least one metal element other than Li, Ni and Co; and a, b, c, d and a are respectively numbers satisfying ?0.04?a?0.04, 0.80?b?1.0, 0?c?0.06, b+c+d=1, and ?0.2<?<0.2, and an a-axis lattice constant of the crystal structure is 2.878×10?10 m or more.

Abstract: In a diaphragm valve comprising a tubular valve seat, a primary side passage located outside the valve seat, a secondary side passage located inside the valve seat, and pressing member which presses the diaphragm to a seating surface to change a valve opening, a supporting member which contacts with the diaphragm in a valve opening range that is at least one part of an entire opening range from a fully opened state to a fully closed state to obstruct deformation of the diaphragm to the secondary side passage side is disposed in a region between the seating surface and a center of the seating surface. Thereby, even when a pressure difference between both sides of the diaphragm is large, a reduction of a gap at the seating surface can be prevented, and gas can be flowed at a large flow rate.

Abstract: An object of the invention is to provide: an alloy article that has excellent homogeneity in the alloy composition and microstructure as well as significant shape controllability, using an HEA with significant mechanical strength and high corrosion resistance; a method for manufacturing the alloy article; and a product using the alloy article. There is provided an alloy article comprising: Co, Cr, Fe, Ni, and Ti elements, each element in content of 5 to 35 atomic %; more than 0 atomic % to 8 atomic % of Mo %; and remainder substances of unavoidable impurities. And, ultrafine particles with an average diameter of 40 nm or less are dispersedly precipitated in matrix phase crystals of the alloy article.