This aluminum alloy cladding material has a sacrificial material disposed on both surfaces of a core material. The composition of the core material contains, in terms of mass%, 0.7-1.8% of Mn, 0.3-1.3% of Si, 0.05-0.7% of Fe and 0.5-3.0% of Zn, with the remainder comprising Al and unavoidable impurities. The composition of the sacrificial material contains, in terms of mass%, 0.005-0.7% of Mn, 0.05-0.3% of Fe and 1.0-4.0% of Zn, with the remainder comprising Al and unavoidable impurities. The Zn content in the sacrificial material is at least 0.2 mass% higher than the Zn content in the core material. The potential of the core material after a brazing heat treatment is -700 to 870 mV.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
2.
HIGH-STRENGTH/HIGHLY-STRETCHED ALUMINUM ALLOY AND ALUMINUM ALLOY EXTRUDED MATERIAL
A high-strength/highly-stretched aluminum alloy according to the present invention is characterized by: containing, in mass%, more than 4.0% to 7.0% zinc, more than 0.9% to 1.3% magnesium, more than 0.1% to 0.3% zirconium, more than 0.01% to 0.1% titanium, more than 0.2% to 0.6% copper, and more than 0.3% to 0.5% manganese, with the remainder having a composition comprising aluminum and unavoidable impurities; and being stretched at least 13% and having a yield strength of 350 MPa or more in the extrusion direction of an extruded molding material. The aluminum alloy may also contain no more than 0.3% iron, no more than 0.2% silicon, no more than 0.1% nickel, and more than 0.005% to 0.05% vanadium.
This hydrophilic coating composition contains: one or more substances that are selected from among phosphoric acid-based glass, boric acid-based glass, vanadium-based glass and bismuth-based glass, said substances serving as a glass component; one or more substances that are selected from among an alumina sol, a basic aluminum chloride, an aluminum alkoxide, boric acid, metaboric acid, tetraboric acid, a borate salt, a metaborate salt, a tetraborate salt, a water-soluble zirconium compound, a water-soluble titanium compound, PVA, PEG, CMC, HEC, HPMC, MC, a polyacrylic acid, a polyacrylate salt, a polymethacrylic acid, a polymethacrylate salt and a water-soluble acrylic resin, said substances serving as an inorganic or organic binder component; and water that serves as a solvent.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/12 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
F28F 19/02 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings
This hydrophilic coating composition includes: a colored glass component, or a glass component and a coloring component, as a coloring source; at least one or two among alumina sol, basic aluminum chloride, aluminum alkoxide, boric acid, metaboric acid, tetraboric acid, borate, metaborate, tetraborate, a water-soluble zirconium compound, a water-soluble titanium compound, PVA, PEG, CMC, HEC, HPMC, MC, polyacrylic acid, polyacrylate, polymethacrylic acid, polymethacrylate, and a water-soluble acrylic resin, as an inorganic or an organic binder component; and water as a solvent.
C09D 129/04 - Polyvinyl alcoholPartially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
F28F 1/30 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
F28F 13/18 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflectingArrangements for modifying heat transfer, e.g. increasing, decreasing by surface treatment, e.g. polishing
This hydrophilic coating composition is characterized by containing: one or more substances that are selected from among phosphoric acid-based glass, boric acid-based glass, vanadium-based glass and bismuth-based glass, said substances serving as a glass component; one or more substances that are selected from among an alumina sol, a basic aluminum chloride, an aluminum alkoxide, boric acid, metaboric acid, tetraboric acid, a borate salt, a metaborate salt, a tetraborate salt, a water-soluble zirconium compound, a water-soluble titanium compound, PVA, PEG, CMC, HEC, HPMC, MC, a polyacrylic acid, a polyacrylate salt, a polymethacrylic acid, a polymethacrylate salt and a water-soluble acrylic resin, said substances serving as an inorganic or organic binder component; an inorganic powder that has antibacterial properties; and water that serves as a solvent.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/12 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
F28F 19/02 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings
The present invention is a brazing sheet for fluxless brazing use, characterized by having a multi-layer structure composed of at least two layers including at least one core material layer and one brazing material layer, in which the brazing material layer is provided on one surface or both surfaces of the core material layer and is positioned as an outermost surface, the brazing material layer comprises an Al-Si-Mg-X-based brazing material which contains, in % by mass, 0.05 to 2.0% of Mg and 2.0 to 14.0% of Si and also contains 0.01 to 0.3% of at least one element selected from Bi, Ga, Sn, In and Pb in which the total amount of Bi, Ga, Sn, In and Pb is 0.5% or less, the area ratio of MgO in an oxide coating film on the surface of the Al-Si-Mg-X-based brazing material is 2% or less, and the area ratio of a region occupied by MgO having crystallinity among the MgO in the oxide coating film is 4% or less. Provided that X represents at least one element selected from Bi, Ga, Sn, In and Pb.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
A brazing sheet according to the present invention is so configured that: a brazing material layer is provided on one surface or both surfaces of a core material layer and is positioned as an outermost surface of the brazing sheet; the brazing material layer comprises an Al-Si-Mg-Bi-based brazing material which contains, in % by mass, 0.01 to 2.0% of Mg, 1.5 to 14.0% of Si and 0.005 to 1.5% of Bi, and also contains 0.01 to 0.5% of at least one additive element that satisfies formula (1) in a thermodynamic calculation, in which the at least one additive element and other unavoidable impurity elements are contained in a total amount of 0.05 to 1.5%; and the number of coarse Si particles each having a longer side length of 50 μm or more which are contained in an observation field of 1000000 μm2is 10 particles or less per 1000000 μm2×03×××
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
22Si content in stoichiometric composition being 1.10% to 1.26% inclusive, the excess Si content being 0% to 0.27% inclusive, and the remainder consisting of aluminum and unavoidable impurities, wherein the aspect ratio of crystal grains in the extrudate is 5 or more.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
This aluminum alloy foil has a composition that comprises no more than 0.5% by mass of silicon, at least 0.2% and no more than 2.0% by mass of iron, and more than 1.5% and no more than 5.0% by mass of magnesium, with the remainder being aluminum and unavoidable impurities, manganese in the unavoidable impurities can be restricted to no more than 0.1% by mass as desired, and, preferably, tensile strength is at least 180 MPa, elongation is at least 15%, and average crystal grain diameter is no more than 25 μm.
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
This aluminum alloy foil has a composition that contains 0.5% by mass or less of Si, from 0.2% by mass to 2.0% by mass of Fe and from 0.1% by mass to 1.5% by mass of Mg, with the balance being made up of Al and unavoidable impurities, while optionally controlling Mn in the unavoidable impurities to 0.1% by mass or less. It is suitable for this aluminum alloy foil to have a tensile strength of from 110 MPa to 180 MPa, an elongation of 10% or more and an average crystal grain size of 25 μm or less.
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
11.
INNER SPIRAL GROOVED TUBE WITH EXCELLENT HEAT TRANSFER PERFORMANCE AND HEAT EXCHANGER
This inner spiral grooved tube has an outer diameter of 3-10 mm and has a plurality of grooves and fins arranged along the inner circumferential direction of the tube body and spirally formed along the longitudinal direction of the tube body, said inner spiral grooved tube being characterized in that the fins are rectangular in cross-section with the fin apex angle drawn on the cross-section of the tube body being in the range of 0±10°, the ratio (h/f) of fin height (h) to fin width (f) is 0.90-3.40, the ratio (c/f) of distance (c) between adjacent fins in the circumferential direction of the tube body to fin width (f) is 0.50-3.80, and the average value of (h/f) and (c/f) is 0.8-3.3.
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
This aluminum alloy foil has a composition that contains 1.2-1.6 mass% Fe, 0.05-0.15 mass% Si, and 0.005-0.1 mass% Cu, with Mn being controlled to not more than 0.01 mass% and the balance being Al and inevitable impurities. The aluminum alloy foil has an average crystal grain diameter of 20-30 μm, a maximum crystal grain diameter/average crystal grain diameter of ≤ 3.0, a cube orientation density of at least 10, a Cu orientation density of not more than 20, and an R orientation density of not more than 15.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
13.
ALUMINUM BRAZING SHEET AND METHOD FOR FLUX-FREE BRAZING OF ALUMINUM MEMBER
The aluminum brazing sheet (1) has a multilayer structure of at least two layers, wherein an aluminum alloy brazing filler material (3) is clad on one surface or both surfaces of a core material (2) to be positioned on the outermost surface thereof. The aluminum brazing sheet (1) is used in flux-less brazing to join aluminum or aluminum alloy members in a non-oxidizing atmosphere with no pressure reduction. The brazing filler material (3) comprises an Al-Si-Mg-Sn-based brazing filler material containing, in percentages by mass, 0.01 to 2.0% Mg, 1.5 to 14% Si, and 0.005 to 1.5% Sn, and the number of particles of Mg-Sn-based compound contained in the Al-Si-Mg-Sn-based brazing filler material and having, in terms of equivalent circle diameter, a diameter of 0.01 μm or larger but smaller than 5.0 μm is greater than ten per 10,000 μm2 of the view field in observation in the surface layer plane direction prior to brazing.
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
14.
BRAZING-USE FLUX COMPOSITION AND POWDER BRAZING COMPOSITION, ALUMINUM ALLOY MEMBER AND HEAT EXCHANGER, AND ALUMINUM ALLOY MEMBER PRODUCTION METHOD AND HEAT EXCHANGER PRODUCTION METHOD
2 and the Mg—Bi-based compounds with a diameter of 5.0 μm or more are less than 2 before brazing, the core material contains Mn: 1.0% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, Mg: 0.1% to 0.7%, and Al balance, the sacrificial material contains Zn: 0.5% to 6.0% and Mg of which a content is limited to 0.1% or less, and a Mg concentration on a surface of the sacrificial material after brazing is 0.15% or less.
An aluminum alloy fin material comprises an aluminum alloy that has a composition comprising, in terms of % by mass, 1.2 to 2.0% of Mn, 0.5 to 1.3% of Si, 0.05 to 0.13% of Cu, 0.1 to 0.5% of Fe, 0.5 to 3.0% of Zn and a remainder made up by Al and unavoidable impurities, wherein crystal grains each having an equivalent circle diameter of 500 μm or more are present at a density of 10 to 200 grains/cm2on the surface of the fin material that is not corrugated yet and 90% or more of the crystal grains has a texture that is longer in the rolling direction than in the width direction, the tensile strength is 200 to 250 MPa, the elongation is 1.0 to 5.0%, the tensile strength after a heat treatment corresponding to brazing which includes retaining at 600°C for 3 minutes is 140 MPa or more, and the corrosion weight loss after 16 weeks in a neutral salt spray test is 150 mg/dm2 or less.
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
17.
BRAZING TUBE, METHOD FOR MANUFACTURING SAME, AND HEAT EXCHANGER
This brazing tube (22) is made from aluminum or an aluminum alloy and comprises a flat tube main body (12) with a front surface (12a), a back surface (12b), and short-side surfaces (12c), a brazing composition layer (16) being formed on the short-side surfaces (12c), wherein: the brazing composition layer is formed continuously, in the longitudinal direction of the tube main body (12), on the short-side surfaces (12c) with at least one uncoated section (17) interposed therebetween; and the width of the uncoated section (17), which follows the longitudinal direction of the tube main body, is 0.5–1 mm.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/02 - Tubular elements of cross-section which is non-circular
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
18.
BRAZING TUBE, METHOD FOR MANUFACTURING SAME, AND HEAT EXCHANGER
This brazing tube is made from aluminum or an aluminum alloy and comprises a flat tube main body (12) with a front surface (12a), a back surface (12b), and short-side surfaces (12c), a brazing composition layer being formed on the short-side surfaces (12c), wherein: first brazing composition layers (16) are formed 5–30 µm thick on the short-side surfaces; and second brazing composition layers (17) which are 0.5–15 µm thick are formed on front-surface-side corner portions extending from the front surface (12a) to the short-side surfaces (12c), and on back-surface-side corner portions of portions extending from the back surface (12b) to the short-side surfaces (12c).
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/02 - Tubular elements of cross-section which is non-circular
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
19.
ALUMINUM ALLOY FOR BRAZING AND ALUMINUM BRAZING SHEET
Provided is an aluminum alloy for flux-free brazing, the aluminum alloy being used for flux-free brazing performed through an Al-Si-based brazing material in a non-oxidizing atmosphere which does not involve depressurization, and containing, in mass%, 0.01-2.0% of Mg and 0.005-1.5% of Bi. For an Mg-Bi-based compound contained in the aluminum alloy, the number of the Mg-Bi-based compound having a Heywood's diameter of at least 0.01 μm and less than 5.0 μm is greater than 10 per 10000 μm2field of view, and the number of the Mg-Bi-based compound having a Heywood's diameter of at least 5.0 μm is less than 2 per 10000 μm2field of view, in a cross section parallel to the rolling direction. For particles of elemental Bi contained in the aluminum alloy, the number of the particles having a Heywood's diameter of at least 5.0 μm is less than 5 per 10000 μm2 field of view in a cross section parallel to the rolling direction.
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
Provided is an aluminum brazing sheet for flux-free brazing, the aluminum brazing sheet being used for brazing without using a flux in a non-oxidizing atmosphere which does not involve depressurization, wherein an Al-Si-Mg-Bi-based brazing material containing, in mass%, 0.01-2.0% of Mg, 1.5-14.0% of Si, and 0.005-1.5% of Bi is clad on one or both surfaces of a core material and located on the outermost surface thereof. For an Mg-Bi-based compound contained in the Al-Si-Mg-Bi-based brazing material, the number of the Mg-Bi-based compound having a Heywood's diameter of at least 0.01 μm and less than 5.0 μm is greater than 10 per 10000 μm2field of view, and the number of the Mg-Bi-based compound having a Heywood's diameter of at least 5.0 μm is less than 2 per 10000 μm2field of view, as observed in the surface layer direction. For particles of elemental Bi contained in the brazing material, the number of the particles having a Heywood's diameter of at least 5.0 μm is less than 5 per 10000 μm2 field of view as observed in the surface layer direction.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
This aluminum brazing sheet has a multilayer structure containing at least two layers. An Al-Si-Mg-Bi-B-based brazing material containing 0.01-2.0% of Mg, 1.5-14.0% of Si, 0.005-1.5% of Bi and 0.005-0.2% of B in terms of mass% is clad on one surface or both surfaces of a core material. When a Mg-Bi-based compound contained in the brazing material is observed in a surface layer direction (RD-TD), the number of particles having circle-equivalent diameters of not less than 0.01 μm and less than 5.0 μm is more than 10 per observed 10,000 μm2, and the number of particles having diameters of 5.0 μm or more is less than 2 per observed 10,000 μm2. In surface layer direction observations, the number of coarse Bi simple substance particles having circle-equivalent diameters of 5.0 µm or more contained in the brazing material is less than 5 per observed 10,000 μm2, and the number of coarse Si particles having long side lengths of 50 µm or less is 3 or less per 1,000,000 μm2.
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
22.
ALUMINUM ALLOY FOIL AND METHOD FOR PRODUCING ALUMINUM ALLOY FOIL
This aluminum alloy foil includes a composition containing Fe (1.0-1.8 mass%), Si (0.09-0.20 mass%), Cu (0.005-0.05 mass%), and Mn (limited to no more than 0.01 mass%), the balance being Al and unavoidable impurities. According to a crystal orientation analysis per unit area by electron backscatter diffraction (EBSD), the length ratio of high angle grain boundaries (HAGBs) having an orientation difference of at least 15° to low angle grain boundaries (LAGBs) having an orientation difference of at least 2° but less than 15° satisfies "HAGBs/LAGBs > 2.0". As a texture, the orientation density of Cu is not more than 40, and the orientation density of R is not more than 30.
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Provided is an aluminum brazing sheet for flux-free brazing, the aluminum brazing sheet being used for brazing without using a flux in a non-oxidizing atmosphere which does not involve depressurization, wherein an Al-Si-Mg-Bi-based brazing material containing, in mass%, 0.01-2.0% of Mg, 1.5-14.0% of Si, and 0.005-1.5% of Bi is clad on one or both surfaces of a core material and located on the outermost surface thereof. For an Mg-Bi-based compound contained in the Al-Si-Mg-Bi-based brazing material, the number of the Mg-Bi-based compound having a Heywood's diameter of at least 0.01 μm and less than 5.0 μm is greater than 10 per 10000 μm2field of view, and the number of the Mg-Bi-based compound having a Heywood's diameter of at least 5.0 μm is less than 2 per 10000 μm2field of view, as observed in the surface layer direction before brazing. For particles of elemental Bi contained in the brazing material, the number of the particles having a Heywood's diameter of at least 5.0 μm is less than 5 per 10000 μm2 field of view as observed in the surface layer direction before brazing.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
Provided is an aluminum alloy for flux-free brazing, the aluminum alloy being used for flux-free brazing performed through an Al-Si-based brazing material in a non-oxidizing atmosphere which does not involve depressurization, and containing, in mass%, 0.01-2.0% of Mg and 0.005-1.5% of Bi. For an Mg-Bi-based compound contained in the aluminum alloy, the number of the Mg-Bi-based compound having a Heywood's diameter of at least 0.01 μm and less than 5.0 μm is greater than 10 per 10000 μm2field of view, and the number of the Mg-Bi-based compound having a Heywood's diameter of at least 5.0 μm is less than 2 per 10000 μm2field of view, in a cross section parallel to the rolling direction before brazing. For particles of elemental Bi contained in the aluminum alloy, the number of the particles having a Heywood's diameter of at least 5.0 μm is less than 5 per 10000 μm2 field of view in a cross section parallel to the rolling direction before brazing.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
25.
OUTER LAYER CLADDING MATERIAL FOR HEAT EXCHANGER HAVING EXCEPTIONAL CORROSION RESISTANCE IN ROOT PORTION, AND HEAT EXCHANGER
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
An aluminum alloy brazing sheet that comprises a sacrificial material, which has the function of a brazing material, on at least one surface of a core material. The sacrificial material has a composition that contains, in mass%, 2-5% of Si and 3-5% of Zn, with the balance being made up of Al and unavoidable impurities; the core material is formed of an Al-Mn alloy; and Al-Mn system second phase particles having a circle-equivalent diameter of 100-400 nm are distributed in the core material before brazing at a number density of 0.3-5 particles/μm2.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
27.
Brazing sheet for flux-free brazing, method for flux-free brazing and method for producing heat exchanger
Brazing sheet for flux-free brazing, wherein an outermost surface brazing filler metal layer, consisting of an Al—Si-based alloy containing 4 to 12% Si in mass %, and an intermediate brazing filler metal layer, consisting of an Al—Si—Mg-based alloy containing 1% or more and less than 4% Si and 0.1 to 5.0% Mg in mass %, are cladded on one side or both sides of a core material, and wherein aluminum members are joined to each other without using flux in a non-oxidizing gas atmosphere under normal pressure with an oxygen concentration of 300 ppm or less, using the brazing sheets.
Provided are: an aluminum alloy fin material for heat exchangers, which is free from brazing failure associated with fin deformation during brazing, and which has excellent strength, conductivity, corrosion resistance and brazability; and a heat exchanger. This aluminum alloy fin material for heat exchangers is formed from an aluminum alloy that has a composition which contains, in mass%, from 1.2% to 2.0% of Mn, from 0.5% to 1.3% of Si, 0.001% or more but less than 0.05% of Cu, from 0.1% to 0.5% of Fe and from 0.5% to 2.5% of Zn, with the balance made up of Al and unavoidable impurities; and this aluminum alloy fin material for heat exchangers has, at room temperature after heating for brazing, a tensile strength of 140 MPa or more, a 0.2 proof stress of 50 MPa or more, a conductivity of 42% IACS or more, a potential of from -800mV to -710 mV (inclusive), and a corrosion mass loss of 120 mg/dm2 or less after 16 weeks in a neutral salt spray test.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/30 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
An aluminum alloy foil used in a collector for a cell, the aluminum alloy foil being a single-rolled foil obtained by rolling a material which has a composition containing 1.0% by mass to 1.8% by mass of Fe, 0.01% by mass to 0.06% by mass of Si, and 0.006% by mass to 0.015% by mass of Cu, the remainder comprising Al and unavoidable impurities, and which has a tensile strength of 180 MPa or greater and an elongation of 6.0% or greater, and the interval of crystal boundaries in the thickness direction of the aluminum alloy foil being 1.0 µm or less.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
This aluminum fin is brazed to a tube which is formed of aluminum and is internally provided with a coolant flow path; and this aluminum fin is characterized in that at least one of the front surface and the back surface thereof is provided with a hydrophilic coating film that is composed of a boehmite coating film having a thickness of 100-10,000 Å.
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
B23K 1/00 - Soldering, e.g. brazing, or unsoldering
B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
F24F 1/18 - Heat exchangers specially adapted for separate outdoor units characterised by their shape
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 13/18 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflectingArrangements for modifying heat transfer, e.g. increasing, decreasing by surface treatment, e.g. polishing
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
31.
ALUMINIUM ALLOY FOIL AND PRODUCTION METHOD FOR ALUMINIUM ALLOY FOIL
Provided are: an aluminium alloy foil having excellent moldability; and a production method for alulminium alloy foil. This aluminium alloy foil has a composition containing 1.0% to 1.8% by mass Fe, 0.01% to 0.10% by mass Si, 0.005% to 0.05% by mass Cu, and no more than 0.01% by mass Mn, with the remainder being made up of Al and unavoidable impurities. In crystal orientation analysis per unit of area by backscattered electron analysis, for crystal grains surrounded by a high angle grain boundary which is a grain boundary at which the difference in orientation is at least 15°, average particle size does not exceed 5 µm, maximum particle size/average particle size ≤ 3.0, and stretching in directions of 0°, 45° and 90° with respect to the rolling direction when foil thickness is 30 µm does not exceed 25% in each direction.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
32.
ALUMINIUM ALLOY FOIL AND PRODUCTION METHOD FOR ALUMINIUM ALLOY FOIL
Provided are: an aluminium alloy foil having excellent moldability; and a production method for aluminium alloy foil. This aluminium alloy foil has a composition containing 1.0% to 1.8% by mass Fe, more than 0.10% but no more than 0.20% by mass Si, 0.005% to 0.05% by mass Cu, and no more than 0.01% by mass Mn, with the remainder being made up of Al and unavoidable impurities. In crystal orientation analysis per unit of area by backscattered electron analysis, for crystal grains surrounded by the large angle grain boundary which is the grain boundary at which difference in orientation is at least 15°, average particle size does not exceed 10 µm, maximum particle size/minimum particle size ≤ 3.0, and stretching in directions of 0°, 45° and 90° with respect to the direction of rolling when foil thickness is 30 µm is at least 25% in each direction.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
33.
POROUS METAL FOIL FOR STORAGE DEVICE UTILIZING CURRENT COLLECTOR AND METHOD FOR MANUFACTURING SAME
A porous metal foil for a storage device utilizing a current collector is characterized in having a plurality of slit-shaped through-holes formed in a foil body with the lengths of the slits parallel to each other, each through-hole having an aspect ratio of 10 or more defined as the ratio of the long side to the short side. Preferably, the foil body has a belt-like shape, the length directions of the plurality of through-holes align with the length direction of the foil body, and the opening of a through-hole is burred. Preferably, the burr is longer than half the slit width of the through-hole and is formed around the opening on the long side of the through-hole.
This mixed composition coating material for brazing is characterized in that: the total mass of solids, an organic solvent and water is 100% by mass; from 30% by mass to 80% by mass (inclusive) of the solids is contained relative to the whole coating material; from 20% by mass to 70% by mass (inclusive) in total of the organic solvent and water is contained relative to the whole coating material; and from 0.4% by mass to 2.5% by mass (inclusive) of water is contained relative to the whole coating material.
F28F 1/30 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
A brazing sheet for fluxless brazing characterized in that an outermost brazing material layer comprising an Al-Si alloy containing 2–13% Si by mass and an intermediate brazing material layer comprising an Al-Si-Mg alloy containing 4–13% Si and 0.1–5.0% Mg are clad on one or both surfaces of a core material, when viewed in the surface layer direction the ratio of the Si particles having a diameter of 1.75 μm or greater among those having a circle-equivalent diameter of 0.8 μm or greater is 10% or greater, and in a cross-sectional view of the brazing material layer the Si particles contained in the intermediate brazing material layer and having a circle-equivalent diameter of 0.25 μm or greater is less than 3,000 per 10,000 μm2. The brazing sheet is used in a non-oxidizing gas atmosphere having an oxygen concentration of 100 ppm or less at atmospheric pressure to join aluminum pieces to each other without using a flux.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
B23K 35/14 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape not specially designed for use as electrodes for soldering
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
HIGHLY HYDROPHILIC ANTIFOULING BAKED COATING FILM, METHOD FOR PRODUCING SAME, ALUMINUM FIN MATERIAL FOR HEAT EXCHANGER, HEAT EXCHANGER, AND COOLING MACHINE
This highly hydrophilic antifouling baked coating film is a baked coating film formed on the surface of a heat exchanger, and includes alumina particles contained in an alumina sol, a water-soluble acrylic resin containing a sulfonic acid, polyethylene glycol, and fluororesin particles, the baked coating film being characterized in that the content of water-soluble sulfur components is 0.5 mg/m2 or less and the coating amount is 0.3-0.8 g/m2.
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
F28F 13/18 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflectingArrangements for modifying heat transfer, e.g. increasing, decreasing by surface treatment, e.g. polishing
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
37.
HEAT TRANSFER TUBE, HEAT EXCHANGER, AND METHOD FOR MANUFACTURING HEAT TRANSFER TUBE
A heat transfer tube made of aluminum, wherein the heat transfer tube is provided with a streak-shape Zn diffusion layer (6, 106) formed in a spiral shape along the length direction on the circular outer circumferential surface of the heat transfer tube. According to this heat transfer tube, a sufficient corrosion resistance can be obtained even if rainwater or dew condensation water collects at one particular circumferential portion of the outer circumferential surface.
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
C23C 4/08 - Metallic material containing only metal elements
C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
B21C 37/20 - Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies
38.
ALUMINUM ALLOY HARD THIN FOIL FOR SECONDARY BATTERY POSITIVE ELECTRODE CHARGE COLLECTOR, SECONDARY BATTERY POSITIVE ELECTRODE CHARGE COLLECTOR, AND PRODUCTION METHOD FOR ALUMINUM ALLOY HARD THIN FOIL
This aluminum alloy hard thin foil has an alloy composition makeup in which the contained amount of Fe is 0.05-2.0% by mass and the remaining portion is Al and incidental impurities, and has a recrystallization finishing temperature of 250°C or less and a foil thickness of 5-50 μm, wherein the aluminum alloy hard thin foil can be obtained, for example, by subjecting an aluminum alloy having a compositional makeup in which the total contained amount Cu, Mg, Cr, and Zr is not more than 0.05% by mass and the contained amount of Mn is not more than 0.05% by mass, to cold rolling in which intermediate annealing is performed at least once halfway through the cold rolling, and in which the pressure reduction rate from after the final intermediate annealing to after the final cold rolling is 85% or more.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
A cooling device including: a base block having a first length and a first thickness and having a mounting side on which a heat-generating body is installed along a first vertical direction. The cooling device further includes a pipe unit, including a tank buried at an opposite side to the mounting side of the base block for storing a coolant, and pipes which are connected to the tank and are parallel to one another. Heat radiation fins are disposed on the pipes in a state in which the pipes penetrate the heat radiation fins. The cooling device in which the tank is formed has a flattened shape and a smaller dimension along a first thickness direction of the base block than a height dimension along the first length of the block. Each of the pipes are connected to an upper position of the tank with respect to the height dimension.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
F28F 1/24 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
F28F 7/02 - Blocks traversed by passages for heat-exchange media
H01L 23/367 - Cooling facilitated by shape of device
40.
BRAZING SHEET FOR FLUX-FREE BRAZING, FLUX-FREE BRAZING METHOD AND METHOD FOR PRODUCING HEAT EXCHANGER
A brazing sheet for flux-free brazing, which is characterized in that an outermost brazing material layer that is formed of an Al-Si system alloy containing 4-12% by mass of Si and an intermediate brazing material layer that is formed of an Al-Si-Mg system alloy containing 1% by mass or more but less than 4% by mass of Si and 0.1-5.0% by mass of Mg are clad on one surface or both surfaces of a core material. Bonding of aluminum members is carried out with use of this brazing sheet in a non-oxidizing gas atmosphere having an oxygen concentration of 300 ppm or less at atmospheric pressure without using a flux.
METHOD FOR MANUFACTURING PIPE PROVIDED WITH INNER-SURFACE HELICAL GROOVES, AND DEVICE FOR MANUFACTURING PIPE PROVIDED WITH INNER-SURFACE HELICAL GROOVES
Provided is a method for manufacturing a tube provided with inner-surface helical grooves, the method comprising: a first twist extraction step in which there are used a first extraction die in which a first direction is configured as the extraction direction, a second extraction die in which a second direction opposite the first direction is configured as the extraction direction, and a revolving flier for everting a pipeline made of a pipe member from the first direction to the second direction between the first extraction die and the second extraction die, and causing the pipeline to rotate about the first extraction die or the second extraction die, the first twist extraction step causing a pipe provided with linear grooves, in which there are formed a plurality of linear grooves on the inner surface along the length direction, to pass through the first extraction die, and causing the pipe provided with linear grooves to revolve and rotate about the revolving flier, whereby the diameter is reduced, twist is imparted, and an intermediate-twist pipe is formed; and a second twist extraction step for causing the intermediate-twist pipe that rotates together with the revolving flier to pass through the second extraction die so that the diameter is reduced, a twist is imparted, and a pipe provided with inner-surface helical grooves is formed
B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
42.
ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER HAVING HIGH STRENGTH AND EXCELLENT BRAZABILITY, METHOD FOR MANUFACTURING SAME, AND HEAT EXCHANGER
An aluminum alloy fin material for a heat exchanger, said aluminum alloy fin material having a composition comprising, in terms of mass ratio, 1.4-2.0% of Mn, 0.05-0.20% of Cu, 0.6-1.4% of Si, 0.1-0.5% of Fe, 1.0-3.0% of Zn, 0.01-0.3% of Zr and the balance consisting of inevitable impurities and Al, showing a tensile strength of 135 MPa or more and a 0.2% proof stress of 45 MPa or more after thermal brazing, and containing, in the material before brazing, less than 1.0×103 particles/mm2 of crystallized particles having a circle equivalent diameter of 3.0 μm or larger, 1.0×104 particles/mm2 or more in total of Al-(Mn,Fe)-Si-based and Al-(Mn,Fe)-based second phase particles having a circle equivalent diameter of 0.01-0.10 μm, and 1.0×10 particles/mm2 or more of Al-Zr-based second phase particles having a circle equivalent diameter of 0.01-0.10 μm.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
43.
BRAZING SHEET WITH EXCELLENT CORROSION RESISTANCE AFTER BRAZING
The present invention relates to an aluminum alloy brazing sheet that comprises a core material, a sacrificial material, with which one surface of the core material has been clad, and a brazing material, with which the other surface of the core material has been clad, and that has a sheet thickness of 0.30 mm or less. The aluminum alloy brazing sheet is characterized in that the core material comprises an Al-Mn-Si-based aluminum alloy containing, in terms of mass%, 0.5-1.3% Cu, the sacrificial material comprises an aluminum alloy containing, in terms of mass%, 4.0-7.0% Zn, and the brazing material comprises an aluminum alloy containing, in terms of mass%, 6.0-11.0% Si and 0.1-3.0% Zn, and that the aluminum alloy brazing sheet after a heat treatment for brazing shows such pitting potentials that a region in the core material where the potential differs by 100 mV or greater from the noblest potential accounts for 10-50% of the sheet thickness.
The present invention provides an aluminum alloy fin material which has high strength, excellent brazeability, and excellent corrosion resistance. The aluminum alloy fin material according to the present invention has a composition which contains, in terms of mass%, 0.05-0.25% Zr, 1.3-1.8% Mn, 0.7-1.3% Si, 0.10-0.35% Fe, less than 0.10% Cu, and 1.2-3.0% Zn, with the remainder comprising Al and unavoidable impurities. The fin material has a solidus temperature of 615ºC or greater and has a tensile strength after brazing of 135 MPa or greater and a pitting potential after brazing in the range of -900 to -780 mV. Furthermore, a rolled surface thereof after brazing has an average crystal grain diameter in the range of 200-1,000 µm. Thus, the aluminum alloy fin material has high strength and satisfactory brazeability which renders the fin material less apt to suffer buckling or brazing-material erosion upon brazing, and can have satisfactory corrosion resistance after brazing.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
Provided is a cooler capable of improving cooling performance and favorably maintaining cooling performance even when the orientation thereof during use changes. A tank 31 of a cooler 100 extends in the horizontal direction. A pipe 32 has a base end section 33 having a connecting end connected to the tank 31, and a heat-dissipating section 34 curving from the base end section 33 and having a blocked end on the tip side thereof. The base end section 33 is slanted upward from the connecting end 32j at a prescribed first slant angle α relative to the horizontal direction. The heat-dissipating section 34 is positioned higher than a set fluid level for a coolant 60 stored in the tank 31, and is provided at a second slant angle which, relative to the horizontal direction, is equal to or greater than 0° and less than the first slant angle α of the base end section 33.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
Provided is a cooling device with which cooling performance can be improved while configuring the entire cooling device more compactly. This cooling device 100 is equipped with: a base block 20 having a mounting surface 21a in which heat-generating bodies 10 are mounted along the up-down direction; pipe units 30, comprising tanks 31 storing a refrigerant 60 and embedded in the opposite surface 21b from the mounting surface 21a of the base block 20, and multiple pipes 32 parallel to each other and connected in an upright manner to a side surface of the tanks 31; and multiple heat radiation fins 40 attached to the multiple pipes 32, with the pipes 32 penetrating the fins. The tanks 31 are provided with a flattened shape in which the thickness t2 in the thickness direction of the base block 20 is less than the height h2 in the up-down direction, and the pipes 32 are connected at a location on the upper part of the tanks 31.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
Provided is a cooler capable of improving cooling performance and favorably maintaining cooling performance even when the orientation thereof changes during use. A tank 31 of a cooler 100 extends in the horizontal direction. A pipe 32 is slanted upward from the end connected to the tank 31 toward a closed end. The inner diameter d2 of the pipe 32 is set so as to be smaller than the inner diameter d1 of the tank 31. The center line of the pipe 32 is parallel to a radiating line extending in the radial direction from the center line of the tank 31, and is positioned upwardly eccentric relative to the radiating line in a range greater than 0 and no greater than (d1-d2)/2.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
48.
ALUMINIUM ALLOY BRAZING SHEET HAVING HIGH STRENGTH, HIGH CORROSION RESISTANCE, AND HIGH MATERIAL ELONGATION
The present invention comprises an aluminium alloy clad material obtained by cladding a sacrificial material on one surface of a core material and cladding an Al-Si or Al-Si-Zn brazing material on the other surface, wherein: the core material has a composition containing, by mass%, 1.3-2.0% Mn, 0.6-1.3% Si, 0.1-0.5% Fe, and 0.7-1.3% Cu, wherein the balance comprises Al and inevitable impurities; the sacrificial material has a composition containing, by mass%, more than 4.0% but at most 8.0% Zn, 0.7-2.0% Mn, 0.3-1.0% Si, 0.3-1.0% Fe, and 0.05-0.3% Ti, wherein the balance comprises Al and inevitable impurities; and with respect to the condition of the material, at least the crystal grain structure of the core material has a layered structure, the elongation of the material is 4% or more, and the tensile strength after brazing is 170 MPa or more.
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
49.
PRODUCTION METHOD AND PRODUCTION DEVICE FOR PIPE WITH SPIRALLY GROOVED INNER SURFACE
The present invention comprises: an element pipe delivery step wherein, as an element pipe (11) that has a plurality of straight, length-direction grooves formed in the inner surface thereof at intervals in the circumferential direction and that is coiled on a drum (21) is unwound therefrom and wound onto an unwinding-side capstan (22), the element pipe (11) is unwound from the unwinding-side capstan (22) while being rotated around an axial center (C) as a result of the drum (21) and the unwinding-side capstan (22) being rotated along the axial center (C), which is perpendicular to a winding shaft (21a) of the drum (21); and a drawing step wherein the element pipe (11) is twisted and made into a pipe (11R) with a spirally grooved inner surface as a result of the unwound element pipe (11) being drawn through a drawing die (24) and reduced in diameter and then being wound onto a drawing-side capstan (25).
B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
B21C 37/20 - Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies
B21C 47/26 - Special arrangements with regard to simultaneous or subsequent treatment of the material
50.
PIPE WITH SPIRALLY GROOVED INNER SURFACE, METHOD FOR MANUFACTURING SAME, AND HEAT EXCHANGER
The purpose of the present invention is to provide a pipe that has a spirally grooved inner surface and is devoid of orange peel generation and has excellent outer-surface and inner-surface properties, a method for manufacturing the pipe with a spirally grooved inner surface, and a heat exchanger. The present invention is a method for manufacturing a pipe with a spirally grooved inner surface in which: an extruded raw pipe or a pipe with a spirally grooved inner surface is drawn while being twisted immediately before being placed in a drawing die, is reduced in diameter in the reduced-diameter portion of the drawing die, and is drawn, and the drawing and the twisting process are performed at the same time, the extruded raw pipe or the pipe with a spirally grooved inner surface being produced by processing into a coil shape an aluminum extruded raw pipe having a plurality of straight grooves formed on the inner surface in the longitudinal direction at intervals in the circumferential direction and fins formed between the straight grooves, then stretching the pipe material to give a twist to the pipe material, and then drawing the pipe material; the method for manufacturing a pipe with a spirally grooved inner surface being characterized in that the average crystal grain diameter of the pipe with a spirally grooved inner surface obtained after annealing is no greater than 120 μm, and that the average crystal grain size of the extruded raw pipe used for manufacture is no greater than 80 μm. In addition, the present invention is a pipe with a spirally grooved inner surface manufactured by processing into a coil shape an aluminum extruded raw pipe having a plurality of straight grooves formed on the inner surface in the longitudinal direction at intervals in the circumferential direction and fins formed between the straight grooves, then stretching the pipe material to give a twist to the pipe material, and then drawing the pipe material, the pipe with a spirally grooved inner surface being characterized in that the metal structure of the pipe is wholly a fibrous structure in the longitudinal direction of the pipe, or is a recrystallized structure solely in the surface layer, and is wholly a fibrous structure outside of the surface layer.
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
51.
METHOD FOR BRAZING ALUMINUM MATERIAL AND BRAZED STRUCTURE
In order to enable good flux-free brazing without requiring a flux or vacuum equipment, an aluminum alloy material provided with an Al-Si-Mg brazing material is heated, in a brazing furnace, at least in a temperature range from 450°C to the temperature right before the brazing material melts in a first inert gas atmosphere that preferably has an oxygen concentration of 50 ppm or less, and then heated at least at a temperature at which the brazing material starts to melt or higher in a second inert gas atmosphere that preferably has an oxygen concentration of 25 ppm or less and a nitrogen gas concentration of 10% by volume or less, thereby joining an object to be brazed containing the aluminum alloy material by means of the Al-Si-Mg brazing material without using a flux. Consequently, by controlling the oxygen concentration and the nitrogen concentration in the atmosphere during the brazing, reliability of the joined part is remarkably improved in comparison to conventional flux-free brazing methods, while suppressing increase in the cost as much as possible.
B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
B23K 1/00 - Soldering, e.g. brazing, or unsoldering
B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
In the present invention, a heat transfer tube has the following: a tube body formed from an extruded material of an aluminum alloy comprising, by mass%, 0.3 to less than 0.8% of Mn, greater than 0.1 but less than 0.32% of Si, 0.3% or less of Fe, and 0.06 to 0.3% of Ti such that the ratio (Mn%/Si%) of the Mn content and the Si content exceeds 2.5, with the balance being Al and inevitable impurities; and a Zn-containing layer disposed on the outer surface of the tube body.
B23K 1/00 - Soldering, e.g. brazing, or unsoldering
B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
An extrusion die device provided with a die holder (5) having a support hole (9) and also with a die assembly (10) contained in the support hole (9). The die assembly (10) comprises: a male die (OD) which is provided with a core member (15) having a protrusion section (15b) and also with a core case (13) for holding the core member (15); a female die (MD) which is provided with a body (11) engaged with the support hole (9) and having an engagement groove section (24) engaging with the core case (13) of the male die (OD), and which is also provided with an annular nested member (12) contained in a portion near a material supply section of the body (11); and a plate-like cap member (16) which is disposed at a position closer to the material supply section than the male die (OD), the plate-like cap member (16) covering a part of the core member (15) and being connected to the core case (13). The space between the nested member (12) and the core member (15) serves as a die hole (10A) through which an extrusion material is caused to pass.
Provided is a 6000-series aluminum alloy material for high-pressure gas containers which has resistance to hydrogen embrittlement, mechanical properties, etc. The aluminum alloy material for high-pressure gas containers has Fe, Mn, and Cu contents which are within respective ranges narrower than in a standard composition of AA6066 alloy. This aluminum alloy material is produced so as to have a structure which contains a certain amount of fine dispersed grains and contains a small amount of coarse crystallized particles. Thus, strength and resistance to hydrogen embrittlement, which are required of high-pressure gas containers, are improved.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
F17C 1/14 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminiumPressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of non-magnetic steel
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
Disclosed is a heat exchanger constituted of an aluminum alloy and obtained by brazing aluminum-alloy tubes and aluminum-alloy fins in combination, the tubes having, formed on the surface thereof, a brazing coating film which comprises 1-5 g/m2 Si powder, 3-20 g/m2 Zn-containing flux, and 0.2-8.3 g/m2 binder, and the fins containing 0.8-2.0 mass% Mn, Si in amount of 1/2.5 to 1/3.5 the amount of the Mn, Fe in an amount less than 0.30 mass%, and Zn in an amount within the range surrounded by the points A, B, C, D, E, and F given in fig. 5 that shows a relationship with the content of the Zn-containing flux in the brazing coating film. The heat exchanger constituted of an aluminum alloy is characterized in that after the brazing, a fillet comprising a solid formed from a melt of the brazing coating film is formed between the tubes and the aluminum-alloy fins, and that in the fillet, a primary crystal part that bonds the fins to the tubes is formed and a eutectic part is formed as the part other than the primary crystal part, the primary crystal part having a potential equal to or higher than the potential of the aluminum-alloy fins.
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
B23K 1/00 - Soldering, e.g. brazing, or unsoldering
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
A heat exchanger tube which comprises an extruded tube of an Al alloy and a flux layer that is formed on the outer surface thereof and that comprises Si powder, a Zn-containing flux, and a binder, characterized in that: the coating weight of the Si powder on the extruded tube is 1 to 5g/m2; the coating weight of the Zn-containing flux thereon is 3 to 20g/m2; and the Si powder has a 99% particle diameter (D99) of 5 to 20μm, and a content of coarse particles of less than 1ppm, said coarse particles being particles having diameters of not less than five times D99. D99 refers to a particle diameter at which the cumulative volume of particles having diameters of not more than that particle diameter accounts for 99% of the total particle volume.
B23K 35/363 - Selection of compositions of fluxes for soldering or brazing
B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
A method for manufacture of a DI can comprising the step of subjecting an aluminum alloy sheet to draw-and-ironing processing to form a cylindrical DI can (10) having a bottom part, wherein the aluminum alloy sheet comprises aluminum having the following composition: Si: 0.1 to 0.5%; Fe: 0.3-0.7%; Cu: 0.05-0.5%; Mn: 0.5-1.5%; Mg: 0.4-2.0%; Cr: 0-0.1%; Zn: 0-0.5%; Ti: 0-0.15% (by mass); and the remainder: unavoidable impurities, the draw-and-ironing processing is performed at a drawing rate of 51.4 to 60.4% (inclusive), and the thinnest part of the can body (11) has a thickness of 0.105 mm to 0.125 mm (inclusive).
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
58.
DECK CROSS MEMBER AND METHOD OF PRODUCING DECK CROSS MEMBER
A deck cross member (10) has a first pipe (30), a joint member (60), and a second pipe (40). The first pipe (30) supports a steering device (26). A cross section (31) of the first pipe (30) orthogonal to its axis (A) is constant in the axis (A) direction. The joint member (60) is inserted into the first pipe (30) and fixed to it. Inside the joint member (60) is provided a receiving section (70). The second pipe (40) is inserted into the receiving section (70) of the joint member (60) and fixed to the joint member (60). A cross section (41) of the second pipe (40) orthogonal to its axis (B) is constant in the axis (B) direction.
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