Abstract: A gas pressure controlled casting mold is disclosed having a hot-top introducing a molten metal of aluminum or aluminum alloy, and a mold body which passes the molten metal of aluminum or aluminum alloy introduced from the hot-top through a molten metal passage portion for cooling and solidification and semi-continuously or continuously casting a billet of aluminum or aluminum alloy. A wall surface of the molten metal passage portion of the mold body is provided with a plurality of lubricating oil blow-out holes for blowing out a lubricating oil. A lubricating oil supply passage is communicatively connected to each lubricating oil blow-out hole and is independently formed at least in a range of a heat affected portion in the mold body. This allows the mold body to be reliably cooled regardless of the difference in the temperature and casting speed conditions and thus can achieve favorable continuous casting.

Abstract: Provided is a method of performing electropolishing treatment on an aluminum material, which is capable of easily producing an aluminum material having an excellent outer appearance with luster and uniformity on an industrial scale. The method of performing electropolishing treatment on an aluminum material includes immersing the aluminum material in an electrolytic treatment solution in an electrolytic treatment tank, and applying an electrolysis voltage through use of the aluminum material as an anode, to thereby perform electropolishing treatment on a surface of the aluminum material, the method including: performing, as pretreatment for the electropolishing treatment, anodic oxidation treatment; performing, during the electropolishing treatment, bubble-diffusion-preventing treatment; and performing, as post-treatment for the electropolishing treatment, film peeling treatment for an electropolishing film.

Abstract: A metal circuit board and a metal base plate are bonded to a ceramic substrate to form a metal-ceramic bonded substrate, then the metal base plate is arranged on one surface of the radiator via a brazing material with the metal base plate overlapping with the one surface of the radiator, a jig having a concave R surface is arranged on another surface of the radiator with the jig butting against the another surface of the radiator, a jig having a convex R surface protruding toward the metal-ceramic bonded substrate is brought into contact with another surface of the metal circuit board, and the metal-ceramic bonded substrate and the radiator are heat-bonded while they are pressurized by the radiator side jig and the metal-ceramic bonded substrate side jig, wherein a curvature radius R (mm) of the convex R surface and the concave R surface is 6500?R?surface pressure (N/mm2)×2000+12000.

Abstract: 3000-series aluminum alloy sheet which has a high strength enabling application to automobile body panel and excellent in bendability and shape freezability is provided.

Abstract: The present invention provides a pellicle frame that can prevent generation of haze and reduces a surface glittering defect under irradiation with collected light, and a method of manufacturing the pellicle frame. Specifically, provided are a pellicle frame, including: an aluminum frame material formed of aluminum or an aluminum alloy; and an anodic oxide film on a surface of the aluminum frame material, in which the anodic oxide film includes a film formed by using an alkaline anodic oxidation solution and a film formed by using an acid anodic oxidation solution, and a method of manufacturing the pellicle frame.

Abstract: Provided is a method of recovering rare-earth elements by performing slight pH adjustment of a leachate, which does not require such significant pH adjustment as in conventional methods, reduces cost and effort, and can efficiently recover rare-earth elements in a bauxite residue in a good yield.

Abstract: A corrugated-fin heat exchanger is constructed by arranging a plurality of flat heat exchange tubes parallel to each other in a horizontal direction between a pair of opposing header pipes, joining, at a position between the plurality of flat heat exchange tubes, corrugated fins formed by alternately repeating peak folding and valley folding portions, and forming water flow passages from lug pieces that are obtained by obliquely cutting and raising flange portions extending along end portions of each of the plurality of flat heat exchange tubes (3) in a width direction thereof. A pitch (P) of each of the corrugated fins between a peak and a valley thereof, a width (L) of each of the lug pieces in a vertical direction thereof, and a thickness (T) of the each of the plurality of flat heat exchange tubes have a relationship of P×2?L?T.

Abstract: Provided is a method of producing an Al—Sc based alloy suitable for production of an Al—Sc based alloy that: eliminates the needs for equipment for heating in an inert gas atmosphere or a vacuum atmosphere, a reducing agent such as metal Ca, and equipment and power for molten salt electrolysis; can be performed adequately by heating up to 1,050° C.; and enables continuous operation. The method of producing an Al—Sc based alloy includes: loading into a reaction vessel metal aluminum (Al), a metal fluoride salt, and a scandium compound; elevating a temperature of a reaction system to from 700 to 1,050° C. to form a molten metal layer including molten metal aluminum serving as a lower layer and a molten salt layer in which the metal fluoride salt and the scandium compound are melted serving as an upper layer; and transferring a scandium ion (Sc3+) generated in the molten salt layer side to the molten metal layer side.

Abstract: An extrusion die for forming a hollow material that extrudes a billet comprising a high-strength alloy having high extrusion force and forms a hollow material including a partition wall, comprises a male-type member that extrudes a billet on a downstream side and forms the inner shape of a material and a female-type member that forms the outer shape of the material, wherein a billet guide hole that guides one part of the billet toward the downstream side is provided to the central area of a mandrel section that constitutes the male-type member, four inner formation pieces are mounted in a fixed manner to positions that face the downstream-side opening of the billet guide hole, and the female-type member is provided with an outer formation die hole that faces all of the outer peripheral surfaces of the inner formation pieces and that forms the outer shape of the hollow material.

Abstract: A substrate for biochips, in which contamination of a biologically relevant substance(s) to be immobilized does not occur even when reaction spots on the substrate for biochips are highly densified; and a biochip comprising the same are provided. The substrate for biochips comprises a substrate and a plurality of reaction spots disposed on the substrate. A plurality of grooves, which surround each of the reaction spots individually and independently, are provided on the substrate. On the biochip, a biologically relevant substance(s) is/are immobilized on each of the reaction spots of the substrate for biochips.

Abstract: An aluminum alloy sheet which is high in strength and excellent in heat conductivity, and which can be given an anodic oxide coating with a white color and a suitable yellowishness is provided. An aluminum alloy ingot containing Mg: 0.80 to 1.8 mass %, Fe: 0.05 to 0.30 mass %, Si: 0.20 mass % or less, Cu: 0.03 to 0.15 mass %, Mn: 0.05 to 0.20 mass %, and Cr: 0.05 to 0.15 mass %, restricts Zn to less than 0.15 mass %, and balance of Al and unavoidable impurities is treated by holding it at 560 to 620° C. for 1 to 5 hours, then hot rolled and, either through or not through process annealing,and cold rolled by a final cold rolling reduction of 15 to 95% to obtain an aluminum alloy sheet which has a 0.2% yield strength of 180 MPa or more and a conductivity of 40 (IACS %) or more.

Abstract: Provided is an anodic oxidation treatment method for an aluminum material including aluminum or an aluminum alloy capable of forming a porous anodic oxide film of a porous type at a treatment voltage of 10 V or more while suppressing manifestation of a crystal grain pattern to the extent possible. Specifically, provided is an anodic oxidation treatment method for an aluminum material for subjecting an aluminum material to anodic oxidation treatment in a treatment bath of a polybasic acid aqueous solution under a treatment condition of a target voltage of 10 V or more, to form an anodic oxide film on a surface of the aluminum material, the method including, as pre-treatment of the anodic oxidation treatment, subjecting the aluminum material to anodic oxidation treatment in a treatment bath of a polybasic acid aqueous solution under a treatment condition of a voltage of 6 V or less until an electrical quantity reaches 0.05 C/cm2 or more, to form a pre-film on the surface of the aluminum material.

Abstract: An aluminum alloy material for use in thermal conduction to which improved castability has been imparted by silicon addition. It has improved thermal conductivity and improved strength. The material has a composition containing 7.5-12.5 mass % Si and 0.1-2.0 mass % Cu, the remainder being Al and unavoidable impurities, wherein the amount of copper in the state of a solid solution in the matrix phase is regulated to 0.3 mass % or smaller. The composition may further contain at least 0.3 mass % Fe and/or at least 0.1 mass % Mg, provided that the sum of (Fe content) and (content of Mg among the impurities)×2 is 1.0 mass % or smaller and the sum of (Cu content), (content of Mg among the impurities)×2.5, and (content of Zn among the impurities) is 2.0 mass % or smaller.

Abstract: A drain structure for a corrugated fin-type heat exchanger, the corrugated fin-type heat exchanger being constituted by arranging a plurality of flat heat exchange tubes parallel to one another in a horizontal direction between a pair of opposing header pipes, and joining corrugated fins between the plurality of flat heat exchange tubes, the drain structure including a plurality of water flow passages for inducing water retained between the corrugated fins adjacent to an upper side and a lower side of each of the plurality of flat heat exchange tubes, the plurality of water flow passages being formed on an outer end surface of the each of the plurality of flat heat exchange tubes in a width direction thereof at a pitch along a longitudinal direction of the each of the plurality of flat heat exchange tubes.

Abstract: There is provided a liquid-cooled integrated substrate 1 in which a metal circuit board 15 made of aluminum or an aluminum alloy is bonded to one surface of a ceramic substrate 10, one surface of a plate-like metal base plate 20 made of aluminum or an aluminum alloy is bonded to another surface of the ceramic substrate 10, and a liquid-cooling type radiator 30 composed of a porous pipe composed of an extrusion material is bonded to another flat surface of the metal base plate 20 by brazing, wherein a relation between a thickness t1 of the metal circuit board 15 and a thickness t2 of the metal base plate 20 satisfies t2/t1?2 where the thickness t1 of the metal circuit board 15 is 0.4 to 3 mm and the thickness t2 of the metal base plate 20 is 0.8 to 6 mm.

Abstract: A method of production of inexpensive aluminum alloy is provided which enables precipitation of fine particles of Al—Fe—Si-based compounds and primary crystal Si to an aluminum alloy melt which is comprised of Si: 10 to 20 mass %, Fe: 0.5 to 4 mass %, P: 0.003 to 0.02 mass %, and further, if necessary, one or more of Mn, Ni, and Cr or furthermore, if necessary, one or more of Mg, Ti, Cr, Zr, and V, and has a balance of Al and unavoidable impurities. To the melt is added 0.01 to 1 mass %, in terms of silicide, of a substance, which includes fine particles of a metal silicide which are present as a solid phase in the melt, when the Al—Fe—Si-based compound is crystallized.

Abstract: Provided is a battery case lid (1) formed by working a metal plate, including: a substrate section (2) and an explosion-proof valve (4) formed in the substrate section (2), wherein the explosion-proof valve (4) has a reduced thickness section (41) thinner than the substrate section (2), and the reduced thickness section (41) is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

Abstract: Provided is a conductive member that includes a joining section excellent in conductivity and oxidation preventing property, the conductive member being capable of stably keeping contact resistance low even in the case where a contact surface pressure is low when joined to another conductive member, and being capable of being joined to another conductive member simply and quickly.

Abstract: An object of the present invention is to provide a 6000-series aluminum alloy material for a high-pressure gas container which has both of resistance to hydrogen embrittlement and mechanical properties. In the aluminum alloy material for a high-pressure gas container, the contents of Fe, Mn and Cu fall within narrower ranges than the standard composition of AA6066 alloy. The aluminum alloy material is produced to have a structure in which a predetermined amount of fine dispersed particles are dispersed therein and coarse crystallized materials are small, and therefore strength and resistance to hydrogen embrittlement are improved, which are required for a high-pressure gas container.