Abstract: A joining method is capable of suitably joining metal members of different kinds. The joining method includes a step of preparing a first metal member having a first upper surface, a first lower surface and a first inclined surface connecting the first upper surface and the first lower surface, and a second metal member having a second upper surface, a second lower surface and a second inclined surface connecting the second upper surface and the second lower surface. The second metal member has a higher melting temperature than the first metal member. A butting interface is formed by butting the first inclined surface and the second inclined surface. The first and second metal members are joined by moving a rotary tool along the butting interface while the rotary tool is inserted from the first upper surface and a stirring pin is in contact with the first metal member.

Abstract: Certain embodiments relate to a heat exchanger plate capable of performing friction stir welding at a deep position of the heat exchanger plate, and improving air-tightness and water-tightness. A method may include a lid groove closing process to insert a lid plate into a lid groove formed at a periphery of a concave groove opening to a surface of a base member. The method may also include a primary joining process to perform friction stirring while relatively moving a primary joining rotary tool equipped with a stirring pin along a butting portion of a side wall of the lid groove and a side surface of the lid plate. In the primary joining process, the rotating stirring pin may be inserted into the butting portion, and the friction stirring may be performed in a state of only the stirring pin being in contact with the base member and the lid plate.

Abstract: Provided is a 1000-series aluminum alloy plate which has high strength applicable to large-size lithium ion battery cases and also has excellent moldability and excellent laser weldability. An aluminum alloy plate produced from a DC cast slab. The aluminum alloy plate has such a chemical composition comprising 0.01 to 0.4 mass % of Si, 0.01 to 0.5 mass % of Fe, 0.002 to 0.3 mass % of Co and a remainder made up by Al and impurities, wherein the content of Cu, which is contained as an impurity, is limited to less than 0.2 mass %. The aluminum alloy plate has a metallic structure in which the number of second phase particles each having an equivalent circle diameter of 3 ?m or more is 110 particles/mm2 or more and less than 1000 particles/mm2. A cold-rolled and annealed plate produced from the aluminum alloy plate has an elongation value of 30% or more.

Abstract: An aluminum alloy sheet having a heat dissipation characteristic that is applicable to a large-size lithium ion battery container, excellent in formability and shape freezability and excellent in laser weldability is provided. An aluminum alloy sheet comprising a cold rolled, annealed material containing Fe: 0.05 to less than 0.3 mass %, Mn: 0.6 to 1.5 mass %, and Si: 0.05 to 0.6 mass %, has a balance of Al and impurities Cu: less than 0.35 mass % and Mg: less than 0.05 mass %, has a conductivity exceeding 45% IACS, has a 0.2% proof strength of 40 to less than 60 MPa, and displays a 20% or more value of elongation is also provided. An aluminum alloy sheet comprising an as-cold-rolled material having a conductivity exceeding 45% IACS, a 0.2% proof strength of 60 to less than 150 MPa, and displaying 3% or more value of elongation is also provided.

Abstract: The method for manufacturing a heat exchanger plate includes a lid groove closing process to insert a lid plate into a lid groove formed at a periphery of a concave groove opening to a surface of a base member; and a primary joining process to perform friction stirring while relatively moving a primary joining rotary tool equipped with a stirring pin along a butting portion of a side wall of the lid groove and a side surface of the lid plate, and in the primary joining process, the rotating stirring pin is inserted into the butting portion, and the friction stirring is performed in a state of only the stirring pin being in contact with the base member and the lid plate.

Abstract: The invention aims at providing a friction stir welding method which can achieve joining a butting portion to a deep location therein by reducing the load on the friction stirring device. The friction stir welding method for joining two metal members (1) using a primary joining rotary tool (F) with a stirring pin (F2) includes a primary joining process in which a rotating stirring pin (F2) is moved to the butting portion formed by butting the metal members (1) against each other and friction stir welding is carried out. In the primary joining process, only the stirring pin (F2) is brought into contact with the metal members (1).

Abstract: A friction stir welding method is provided that can prevent defective welding due to a shortage of metal. The friction stir welding method welds metal members (1, 2) using a primary joining rotary tool (F) having a stirring pin (F2), and includes steps of: butting in which the metal members (1, 2) are butted with each other at an angle to form a butted portion (J1); buildup welding in which buildup welding is applied along an inner corner of the metal members (1, 2) formed in the butting step to cover the inner corner by a weld metal (M); and inner corner joining in which only the stirring pin (F2) in rotation is inserted in the inner corner to plastically fluidize the weld metal (M) and the metal members (1, 2) for friction stir welding of the butted portion (J1).

Abstract: A method of manufacturing a liquid-cooled jacket, includes a preparation step which includes placing a sealing body on a stepped portion to allow a step side surface and a sealing-body side surface of the sealing body to butt each other, and a primary joining step which includes allowing a primary joining rotary tool to move once around the sealing body, while moving the rotary tool along a butted portion formed in the preparation step, to carry out friction stir welding. The primary joining step includes employing the primary joining rotary tool provided with a stirring pin having a length dimension greater than a thickness dimension of the sealing body, and carrying out friction stirring with only the stirring pin being brought into contact with a jacket body and the sealing body.

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: 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: Provided is a method of producing a liquid-cooled jacket wherein deformation of a seal body can be minimized.

Abstract: The invention aims at providing a friction stir welding method which can achieve joining a butting portion to a deep location therein by reducing the load on the friction stirring device. The friction stir welding method for joining two metal members (1) using a primary joining rotary tool (F) with a stirring pin (F2) includes a primary joining process in which a rotating stirring pin (F2) is moved to the butting portion formed by butting the metal members (1) against each other and friction stir welding is carried out. In the primary joining process, only the stirring pin (F2) is brought into contact with the metal members (1).

Abstract: The method for manufacturing a heat exchanger plate includes a lid groove closing process to insert a lid plate into a lid groove formed at a periphery of a concave groove opening to a surface (of a base member; and a primary joining process to perform friction stirring while relatively moving a primary joining rotary tool equipped with a stirring pin along a butting portion of a side wall of the lid groove and a side surface of the lid plate, and in the primary joining process, the rotating stirring pin is inserted into the butting portion, and the friction stirring is performed in a state of only the stirring pin being in contact with the base member and the lid plate.

Abstract: The invention aims at providing a friction stir welding method which can achieve joining a butting portion to a deep location therein by reducing the load on the friction stirring device. The friction stir welding method for joining two metal members (1) using a primary joining rotary tool (F) with a stirring pin (F2) includes a primary joining process in which a rotating stirring pin (F2) is moved to the butting portion formed by butting the metal members (1) against each other and friction stir welding is carried out. In the primary joining process, only the stirring pin (F2) is brought into contact with the metal members (1).

Abstract: A joining method includes a butting process configured to butt a first metal member and a second metal member each having a front surface with various heights to form therebetween a butt portion with various heights; and a welding process configured to apply a friction stirring to the butt portion by a stirring pin of a rotation tool while only the stirring pin of the rotation tool contacts with the first metal member and the second metal member of the butt portion. The welding process may be configured to insert the stirring pin of the rotation tool into the butt portion from front surfaces of the first metal member and the second metal member and apply the friction stirring to the butt portion while an insertion depth of only the stirring pin is kept approximately constant.

Abstract: An aluminum alloy sheet having a heat dissipation characteristic that is applicable to a large-size lithium ion battery container, excellent in formability and shape freezability and excellent in laser weldability is provided. An aluminum alloy sheet comprising a cold rolled, annealed material containing Fe: 0.05 to less than 0.3 mass %, Mn: 0.6 to 1.5 mass %, and Si: 0.05 to 0.6 mass %, has a balance of Al and impurities Cu: less than 0.35 mass % and Mg: less than 0.05 mass %, has a conductivity exceeding 45% IACS, has a 0.2% proof strength of 40 to less than 60 MPa, and displays a 20% or more value of elongation is also provided. An aluminum alloy sheet comprising an as-cold-rolled material having a conductivity exceeding 45% IACS, a 0.2% proof strength of 60 to less than 150 MPa, and displaying 3% or more value of elongation is also provided.

Abstract: Provided is a 1000-series aluminum alloy plate which has high strength applicable to large-size lithium ion battery cases and also has excellent moldability and excellent laser weldability. An aluminum alloy plate produced from a DC cast slab. The aluminum alloy plate has such a chemical composition comprising 0.01 to 0.4 mass % of Si, 0.01 to 0.5 mass % of Fe, 0.002 to 0.3 mass % of Co and a remainder made up by Al and impurities, wherein the content of Cu, which is contained as an impurity, is limited to less than 0.2 mass %. The aluminum alloy plate has a metallic structure in which the number of second phase particles each having an equivalent circle diameter of 3 ?m or more is 110 particles/mm2 or more and less than 1000 particles/mm2. A cold-rolled and annealed plate produced from the aluminum alloy plate has an elongation value of 30% or more.

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: Provided are: a method of anchoring Sn powder that allows a Sn coating layer exhibiting excellent adhesion property and excellent heat cycle property to be adhered to and deposited on a surface of an aluminum substrate by means of a cold spray process, which is low in device cost and is high in productivity; and an electrically-conductive aluminum member produced by the method. The method of anchoring Sn powder onto an aluminum substrate is a method of anchoring Sn powder onto a surface of an aluminum substrate including depositing and anchoring Sn powder to form a Sn coating layer on the surface of the aluminum substrate by means of a cold spray process, the method including spraying the Sn powder onto the aluminum substrate under spray conditions of an operating gas temperature of 60° C. or less, an operating gas pressure of 0.30 MPa or more, and a spray distance between a spray gun nozzle and the aluminum substrate of from 5 to 30 mm.

Abstract: There is provided a composite material for a heat dissipating plate which achieves both a high thermal conductivity and a low coefficient of thermal expansion and has a performance satisfactory as a heat dissipating plate and a method of production of a composite material which can produce the composite material at a low cost. For this reason, powder metallurgy is used to produce the composite material for a heat dissipating plate. The composite material for a heat dissipating plate which is fabricated by this method of production contains an aluminum alloy and silicon carbide. The particles of silicon carbide are in contact with each other.