WO2007114040A1 - アルミニウムろう付用ペースト状組成物、それが塗布されたアルミニウム含有部材、および、それを用いたアルミニウム含有部材のろう付方法 - Google Patents
アルミニウムろう付用ペースト状組成物、それが塗布されたアルミニウム含有部材、および、それを用いたアルミニウム含有部材のろう付方法 Download PDFInfo
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- WO2007114040A1 WO2007114040A1 PCT/JP2007/055602 JP2007055602W WO2007114040A1 WO 2007114040 A1 WO2007114040 A1 WO 2007114040A1 JP 2007055602 W JP2007055602 W JP 2007055602W WO 2007114040 A1 WO2007114040 A1 WO 2007114040A1
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- Prior art keywords
- aluminum
- powder
- brazing
- paste
- mass
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
- B23K35/025—Pastes, creams, slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/04—Fastening; Joining by brazing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
Definitions
- Paste composition for aluminum brazing aluminum-containing member coated with the same, and method for brazing aluminum-containing member using the same
- the present invention relates generally to a paste-like composition for aluminum brazing, an aluminum-containing member to which it is applied, and a method for brazing an aluminum-containing member using the same, and more specifically, to contain aluminum.
- the present invention relates to a paste-like composition containing an aluminum-containing powder as a brazing material powder when brazing members together.
- brazing sheet has been used for brazing an anoleminium-containing member.
- brazing sheets include, for example, 3003 alloy (hereinafter referred to as the 4-digit number 'symbol ⁇ o IS') or 3 ⁇ 03 alloy or other core material such as 4343 alloy or 4045 alloy on one or both sides.
- the clad material which joined the material is used.
- the brazing material is joined in addition to the brazed part. This increases the manufacturing cost of the final product.
- the limit is to use a clad material with a thickness of about 60 ⁇ m as the brazing sheet. Manufacturing a clad material thinner than this thickness is extremely difficult in industry, and even if it can be manufactured, the thickness of the skin material becomes uneven, and stable quality and performance cannot be obtained.
- Patent Document 1 Si: 4 ⁇ 13 mass 0/0, Zn: contains 0.5 to 2 0 wt%, the balance being even A1 and impurities force, An aluminum alloy powder brazing material having an average particle size of 1 to: LOO / zm is described.
- Patent Document 2 Japanese Patent Application Laid-Open No. 10-323792
- Si 13 to 45%, Zn: 6 to 35%, and the remainder having an average particle size having a composition that also has A1 and inevitable impurity power 5 ⁇ : L00 ⁇ m
- An aluminum alloy powder brazing material composed of an Al—Si—Zn ternary hypereutectic alloy powder, an Si powder having an average particle diameter of 1 to 50 / ⁇ ⁇ , and a mixed powder is also described.
- JP 2001-293593 A discloses that a brazing metal powder contains pure aluminum powder having an average particle size of 1 ⁇ m or more and less than 10 ⁇ m and an average particle size of 0.1 ⁇ m.
- a paste-like composition for aluminum brazing which is a mixed powder of silicon powder of less than 10 ⁇ m, is described.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-334690
- Patent Document 2 Japanese Patent Laid-Open No. 10-323792
- Patent Document 3 Japanese Patent Laid-Open No. 2001-293593
- an object of the present invention is an aluminum that has excellent coatability, good dimensional accuracy of the product after brazing, and good appearance of the brazed part (fillet) after brazing without causing erosion.
- -To provide a paste composition for brazing, an aluminum-containing member to which it is applied, and a method for brazing an aluminum-containing member using the same.
- an aluminum brazing paste-like composition according to the present invention is an aluminum brazing paste-like composition containing an aluminum-containing powder, and the aluminum-containing powder has a particle size of D ⁇ m or less.
- the particle size D / zm corresponding to the Q volume% is D (Q) m.
- D (50) m is 20 m or more and 150 m or less
- D (90) ⁇ ⁇ / ⁇ (10) m is 5 or less
- the mesh size is 45 m.
- the mass proportion of the particles in the aluminum-containing powder that passes through is 50% or less, and the fluidity of the aluminum-containing powder is Z50 g or less for 80 seconds.
- the aluminum-containing powder is 10% by mass or more and 70% by mass or less, the fluoride flux is 2% by mass or more and 50% by mass or less, and the noda is 1% by mass or more. It is preferable that 15% by mass is included, and the balance is substantially organic solvent power.
- the binder contains at least one selected from the group consisting of butyl rubber, petroleum resin, acrylic resin and alkyd resin. Is preferred.
- the aluminum-containing powder is preferably an aluminum monosilicon alloy powder or an aluminum monosilicon-zinc alloy powder.
- the aluminum-containing powder may be a mixed powder of aluminum powder and silicon powder, or a mixed powder of aluminum powder, silicon powder and zinc powder! / ⁇ .
- the aluminum brazing paste-like composition of the present invention preferably further contains a coupling agent.
- the aluminum-containing member according to the present invention is obtained by applying an aluminum brazing paste-like composition having at least one of the above-described characteristics to at least a part of the surface.
- the method for brazing an aluminum-containing member according to the present invention comprises applying an aluminum brazing paste-like composition having at least one of the above-described features to at least a part of the surface of one aluminum-containing member.
- the one aluminum-containing member and the other aluminum-containing member are brazed.
- the appearance of the fillet after brazing can be improved, and black change and white residue are not caused.
- the brazing method of the present invention does not require special equipment or equipment, and can be implemented with existing equipment.
- FIG. 1 is a cross-sectional view schematically showing a cross section of a fillet forming portion after brazing.
- FIG. 2 is a diagram showing an example of a cumulative particle size curve of an aluminum-containing powder.
- the aluminum-containing powder is preferably a powder obtained by a gas spraying method (gas customization) using argon gas or nitrogen gas.
- D (50) ⁇ m of the aluminum-containing powder of the present invention is 20 ⁇ m or more and 150 ⁇ m or less, preferably 50 ⁇ m or more and 100 ⁇ m or less.
- D (50) ⁇ m force From 20 ⁇ m / J length!
- Anorium-containing powders are likely to have a high oxygen content, and are agglomerated in the paste-like composition, causing the paste to slip.
- the production cost increases because it is necessary to blend a large amount of flux in order to lose strength, deteriorate coating properties, and obtain good brazing properties.
- the value of D (90) ⁇ m / D (10) ⁇ m of the aluminum-containing powder of the present invention is larger than 1 and 5 or less, preferably 3 or less. If the value of D (90) mZD (10) m of the aluminum-containing powder exceeds 5, the coatability will deteriorate and the dimensional accuracy of the product after brazing will deteriorate, or it will be uniform in the paste-like composition. There is a risk that the sex may be impaired. [0026] D (50) ⁇ m of powder containing aluminum is 20 ⁇ m or more and 150 ⁇ m or less, and D (90) mZD (10) m of powder containing aluminum is controlled within the range of 5 or less.
- the gas pressure used in the gas spraying method should be controlled to 10 kgfZcm 2 or less and the gas metal ratio to 5 or less. More preferably, the gas pressure is 5-7 kgfZcm 2 .
- the gas metal ratio is preferably 1Z1000 or more, preferably 3 or less.
- the gas metal ratio is a value obtained by dividing the amount of gas used in the gas spraying method by the flow rate of the aluminum-containing molten metal used in the gas spraying method, and is expressed by the following equation.
- Gas metal ratio Gas amount (kgZh) Flow rate of molten metal containing Z aluminum (kgZh)
- the aluminum-containing powder of the present invention has a V ( ⁇ 45) (mass ratio of particles passing through a sieve having an opening of 45 ⁇ m) of 50% or less and a fluidity of 80 seconds or less of Z50 g.
- V (—45) is 30% or less and the fluidity is 60 seconds or less Z50 g.
- V (-45) exceeds 50%, the paste is agglomerated in the paste composition, resulting in loss of smoothness of the paste. May cause adverse effects.
- the fluidity exceeds Z50g for 80 seconds, the applicability is lowered and the dimensional accuracy of the product after brazing becomes worse.
- the particle size distribution of the aluminum-containing powder may be adjusted by sieving (classification).
- the amount of oxygen contained in the aluminum-containing powder is preferably 1.5% by mass or less, although it depends on the particle size and shape. If the oxygen content exceeds 1.5% by mass, the acid film becomes thick and does not melt sufficiently, or by adding a lot of flux, the appearance after brazing is poor. There is a fear.
- an aluminum monosilicon alloy powder or an aluminum monosilicon-zinc alloy powder can be used in addition to pure aluminum powder.
- a mixed powder obtained by mixing silicon powder with pure aluminum powder or a mixed powder obtained by mixing silicon powder and zinc powder can also be suitably used.
- the pure aluminum powder, aluminum alloy powder, silicon powder and zinc powder are mainly a gas spraying method, a pulverizing method, a rotating disk method, a cavity method, a melt spinning method, etc., or a combination thereof.
- the shape of these powders may be any of spherical, flat, plate, teardrop, needle, spheroid, and indefinite shape.
- the amount of silicon contained in the aluminum alloy powder and in the case of a mixed powder, the amount of silicon powder contained in the mixed powder ranges from 5 to 85% by mass with respect to 100% by mass of the metal component. It is appropriate to be within.
- silicon is included in the aluminum-containing powder, it is preferable to use a mixed powder. This is because when aluminum and silicon are alloyed with a composition within the above range, the fluidity in a molten state with a low melting point is good. In particular, in the case of the eutectic point or higher (in the equilibrium diagram, about 12% by mass of silicon), by alloying with an aluminum member, it melts at the brazing temperature and is further fluidized.
- a pure aluminum powder having a purity of at least 99.0% by mass, preferably at least 99.7% by mass, and a purity of at least 90.0% by mass, preferably at least 97.0% by mass.
- Silicon powder should be used. Powders with less purity than these are not preferable because the content of iron as an impurity increases and the corrosion resistance after brazing decreases.
- the average particle size of the silicon powder is preferably 0.1 111 or more and less than 10 ⁇ m. Silicon powder having an average particle size of less than 0.1 ⁇ m is not preferable because it increases the amount of oxygen and easily aggregates in the paste composition. On the other hand, silicon powder having an average particle size of 10 m or more is not preferred because the uniformity in the paste-like composition may be impaired, and erosion may occur in the brazed aluminum member.
- the aluminum-containing powder of the present invention may contain zinc in order to obtain a sacrificial anticorrosive effect.
- the amount of zinc contained in the aluminum alloy powder, and in the case of a mixed powder, the amount of zinc powder contained in the mixed powder is 0.5 to 60% by mass, preferably 10 to 100% by mass with respect to 100% by mass of the metal component. It may be 50% by mass.
- the average particle size of the zinc powder is preferably from 0 .: m to less than 10 m.
- Zinc powder having an average particle size of less than 0 .: Lm is not preferable because it increases the amount of oxygen and easily aggregates in the paste composition.
- zinc powder with an average particle size of 10 m or more has an unnecessarily thick coating after coating, resulting in poor dimensional accuracy of the product after brazing or uniformity in the paste composition. Since it may be damaged, it is not preferable.
- zinc powder having a purity of 90.0% by mass or more, desirably 97.0% by mass or more may be used.
- Zinc powder with a purity of less than 90% by mass is preferable because the content of impure Pb (lead) increases and the corrosion resistance after brazing decreases. Absent.
- elements may be added. If necessary, one or more elements such as Cu, Mg, Bi, Sb, Ba, etc. should be about 5% by mass or less based on 100% of the metal component. It is also possible to add. These elements may be added as alloy elements constituting the aluminum alloy powder, or may be added as a single powder constituting the mixed powder.
- the amount of the aluminum-containing powder contained in the aluminum brazing paste-like composition of the present invention is such that the aluminum-containing powder is 10% by mass to 70% by mass, preferably 100% by mass, preferably What is necessary is just to set it as 20 mass%-60 mass%. If the aluminum-containing powder is less than 10% by mass, the performance as a brazing material is poor, and a good fillet may not be formed. On the other hand, if the content of aluminum-containing powder exceeds 70% by mass, it will become excessive, and the amount of flux and binder required will increase, leading to an increase in manufacturing costs.
- the fluoride flux contained in the aluminum brazing paste composition of the present invention is exemplified by fluoride fluxes such as A1F-KF, KA1F-KA1F, KA1F and KA1F.
- the amount of the fluoride-based flux contained in the aluminum brazing paste composition of the present invention is about 2 to 50% by mass, preferably about 5 to 30% by mass.
- the content of fluoride flux is less than 2% by mass, it is difficult to obtain a sufficient flux effect.
- the content of fluoride flux exceeds 50% by mass, it is excessive, leading to an increase in manufacturing costs.
- the resin containing at least one selected from the group strength of butyl rubber, petroleum resin, acrylic resin and alkyd resin is used as the resin Z rubber that acts as a binder.
- the butyl rubber is butyl rubber which is a copolymer of isobutylene and isoprene, and preferably has a molecular weight of 250,000 to 550,000.
- One or more of C5 petroleum oil, C9 petroleum oil and C5C9 copolymerized petroleum resin can be used as the petroleum oil, and the molecular weight is preferably about 600 to 2000.
- acrylic resin a copolymer of an acrylic monomer and another ethylenically unsaturated monomer is used.
- a polymer is mentioned.
- Acrylic monomers that can be used in the above copolymerization include methyl, ethyl, propyl, n-butyl, i-butyl, tert-butyl, 2-ethylhexyl, lauryl, phthalyl, and methacrylic acid.
- Esterified compounds such as benzyl, 2-hydroxyethyl, 2-hydroxypropyl, 2-hydroxyethyl of acrylic acid or methacrylic acid, ring-opening adducts of prolataton, glycidyl of acrylic acid or methacrylic acid, polyvalent Examples include (meth) acrylic acid esters of alcohol.
- examples of the ethylenically unsaturated monomer copolymerizable with these acrylic monomers include styrene, a-methylstyrene, itaconic acid, maleic acid, and vinyl acetate. In particular, those having a molecular weight of 100 to 100000 are suitable.
- alkyd coconut oil polybasic acid and polyhydric alcohol
- oil and fat fatty acid oil and fat fatty acid (soybean oil, flax oil, coconut oil, stearic acid, etc.) and natural rosin (rosin, succinic acid, etc.)
- Alkyd rosin obtained by reacting and modifying a sex agent can be used.
- the polybasic acid include saturated polybasic acids such as phthalic anhydride, terephthalic acid, and succinic acid, and unsaturated polybasic acids such as maleic acid, maleic anhydride, and fumaric acid.
- the polyhydric alcohol include dihydric alcohols such as ethylene glycol and diethylene glycol, and trihydric alcohols such as glycerin and trimethylolpropane.
- the content of the binder for with aluminum brazing paste composition of the present invention is preferably from preferably 1 mass 0 / 0-15 mass% instrument is 2 wt% to 10 wt%. If the binder content is less than 1% by mass, it is not preferable because sagging occurs when the flux composition is applied to an aluminum-containing member having a low viscosity, resulting in poor adhesion to the aluminum-containing member. On the other hand, if the binder content exceeds 15% by mass, it may become excessive and the production cost may increase.
- the organic solvent contained in the aluminum brazing paste-like composition of the present invention is not particularly limited as long as the binder is soluble, and includes toluene, hexane, octane, cyclohexane and the like. These can be used alone or in admixture of two or more.
- the content of the organic solvent may be appropriately adjusted in order to adjust the viscosity or the like of the paste-like composition, but is specifically adjusted within the range of 0.1 to 87% by mass, preferably 5 to 70% by mass. Do it! /.
- a known additive may be added to the aluminum brazing paste-like composition of the present invention.
- an antifoaming agent, leveling agent, thixotropic agent, surfactant, face Wetting agents, plasticizers, dispersants, lubricants, light stabilizers, tack fires, coupling agents, etc. can be added as necessary.
- the coupling agent is effective for improving the adhesion of the coating film, and the addition of about 0.001 to 1.0% by mass is effective.
- titanate coupling agents are particularly effective.
- antifoaming agents and leveling agents include acrylic antifoaming agents, acrylic leveling agents, bull type antifoaming agents, bull type leveling agents, silicone type antifoaming agents, and silicone type Examples thereof include leveling agents, mineral-based antifoaming agents, thixotropic agents (thickening agents, anti-settling agents, anti-sagging agents) and the like, and one or more of these can be used.
- the form of the thixotropic agent is not particularly limited, and examples thereof include a solvent-based thixotropic agent and an aqueous thixotropic agent.
- solvent-based thixotropic agents include organic bentonite-based, ultrafine silica-based, surface-treated calcium carbonate-based inorganic fine particle-based solvent-based thixotropic agents; amide wax-based, hydrogenated castor oil wax-based, Benzylidene sorbitol, metal stone (zinc stearate, aluminum stearate, etc.), acid polyethylene, polymerized vegetable oil, sulfate ester anionic surfactant, polyether ester type surfactant, poly Examples include organic solvent-based thixotropic agents such as carboxylic acid amine salts, and one or more of these can be used.
- thixotropic agent for water use examples include thixotropic agents for inorganic fine particles such as ultrafine silica and magnesium aluminum silicate; xanthan gum, guargam, sodium polyacrylate, acrylic acid 'acrylic acid
- thixotropic agents for inorganic fine particles such as ultrafine silica and magnesium aluminum silicate
- xanthan gum, guargam sodium polyacrylate
- acrylic acid 'acrylic acid examples thereof include an organic water thixotropic agent such as an ester copolymer system, a polybutyl alcohol system, a polyethylene oxide system, and a urethane-modified polyether system, and one or more of these can be used.
- Surfactants include, for example, non-one (polyethylene glycol type, polyhydric alcohol type, etc.), er-on type (sulfuric acid ester type, sulfonic acid type, carboxylic acid type, phosphoric acid ester). Type), cationic type (amin salt type, quaternary ammonium salt, etc.), amphoteric type (amic acid type, (Betaine type) and the like, and one or more of these can be used.
- pigment wetting agent / dispersing agent examples include solvent-based pigment wetting agents / dispersing agents, water-based facial wetting agents / dispersing agents, and the like, and one or more of these are used. be able to.
- Solvent-based pigment wetting agents ⁇ Dispersants include, for example, high molecular weight unsaturated polycarboxylic acid, polyether ⁇ polyester carboxylate, high molecular weight polyester acid polyamine salt, polycarboxylate, and high molecular weight polyester acid.
- Various high molecular weight compounds such as amide amine salts, long-chain polyaminoamide phosphates, aliphatic polyamides, long-chain polyaminoamides and high-molecular polyester acid salts, high-molecular-weight polyether compounds; phosphate esters, phosphate ester salts, Aon compounds such as aliphatic alcohol sulfate salts, sulfonated oils, alkyl sulfonates; aliphatic amine salts, cationic compounds such as quaternary ammonia salts, etc. These may be used alone or in combination of two or more.
- Pigment wetting agent for water ⁇ Dispersing agents include, for example, salts of high molecular weight polycarboxylic acids, styrene / maleic acid copolymer salts, naphthalene / formic acid condensates of sulfonic acids, and long-chain alkyl organic sulfones.
- Acid salts, lignosulfonic acid salts, polyphosphoric acid, polycaic acid salts, long-chain alkylamine salts, polyethylene glycol derivatives, sorbitan fatty acid esters, etc. can be listed, and one or more of these can be used. can do.
- plasticizer examples include dimethyl phthalate, jetyl phthalate, dibutyl phthalate, dioctyl phthalate, butyl benzyl phthalate, diisodecyl phthalate, tricresyl phosphate, diphenyl cresyl phosphate, and triphenyl phosphate.
- -Dibutyl rubebacate can be listed, and one or more of these can be used.
- Examples of the lubricant include aliphatic hydrocarbon lubricants, higher aliphatic alcohols' higher fatty acid lubricants, fatty acid amide lubricants, metal stalagmite lubricants, fatty acid ester lubricants, composite lubricants, and the like. They can be one or more than one.
- Examples of light stabilizers include bis (1, 2, 2, 6, 6-pentamethyl-4-piperidyl) sebacate, methyl 1, 2, 2, 6, 6-pentamethyl-4-piberidyl ceno. Kinders, hindered doors such as bis (2, 2, 6, 6-tetramethyl-1-octyloxy-4-piperidyl) decanoate Mining light stabilizers can be used, and one or more of these can be used.
- the aluminum brazing paste composition of the present invention can be used by applying a necessary amount to at least a part of the surface of the aluminum-containing member, that is, at least a part to be brazed.
- the coating amount in an undried state L ⁇ 300gZm 2 is preferably tool lg / m 2 ⁇ : LOOgZm 2 is more preferred. If it is less than lgZm 2 , the coating amount is insufficient and a fillet may not be formed sufficiently, which is not preferable. On the other hand, if the coating amount exceeds 300 gZm 2 , it will become excessive and the appearance after brazing may be impaired.
- the average film thickness after drying is preferably 3 to 500 ⁇ m, more preferably 10 to 150 ⁇ m. Even if the average film thickness is less than 3 m, brazing is possible, but brazing strength may be insufficient. On the other hand, if the average film thickness exceeds 500 m, it may become excessive, leading to an increase in manufacturing costs.
- the average film thickness after drying is not limited to 500 m. It can be used even if the average film thickness after drying exceeds 500 m.
- a coating method a known method can be adopted, and a brush coating method, a spray coating method, a roll coater, a bar coater, a doctor blade, or the like can be used. Besides these methods, a method such as simply immersing an aluminum-containing member in the aluminum brazing paste-like composition of the present invention may be used.
- Drying after application of the paste-like composition is usually performed at room temperature, and if necessary, at a temperature of about 30 to 150 ° C.
- the method of brazing is not particularly limited, and a known method can be adopted, but the method of brazing in a furnace is particularly preferable.
- the method of brazing in the furnace is suitable for industrial production because it can be brazed in large quantities at once without human intervention.
- the brazing temperature is a force depending on the composition of the paste-like composition, usually about 450 ° C to 630 ° C.
- the atmosphere is preferably a non-oxidizing atmosphere such as vacuum, Ar, or nitrogen.
- the oxygen concentration in the brazing atmosphere is 200 ppm or less, preferably lOO ppm or less. When the oxygen concentration exceeds 200 ppm, there is a risk of poor brazing due to a decrease in the flux effect and the acidity of the aluminum alloy powder used as the brazing material.
- the paste composition of the present invention is applied to an aluminum-containing member that can be brazed.
- it can be used for brazing joints of fins, pins, noise, tubes, plates, etc., which constitute a heat exchanger such as a heater core, an evaporator, and a condenser.
- the paste composition of the present invention is applicable to various machine parts, vehicle parts, structural parts, sports equipment, OA equipment, daily necessities and the like without being limited to heat exchange.
- Al-12 mass% Si alloy powder obtained by spraying with a gas atomizer at a nitrogen gas pressure of 7 kgfZc m 2 and a gas metal ratio of 2 is classified as a sieve having a 45 m opening.
- a powder having a value of V ( ⁇ 45) (mass ratio of particles passing through a sieve having an opening of 45 ⁇ m) shown in Table 1 was obtained.
- fluoride-based flux Alcan, product name: Nocolok flux 100
- polyethylene rubber binder Exxony Gakki, product name: Exxon butyl 268)
- organic solvent toluene
- a gas atomizer is used to classify Al-12 mass% Si alloy powder obtained by spraying at a nitrogen gas pressure of 5 kgfZc m 2 and a gas metal ratio of 1 to obtain a sieve opening of 45 m.
- a wire mesh By passing through a wire mesh, powder having a value of V ( ⁇ 45) shown in Table 1 was obtained.
- fluoride-based flux Alcan, product name Nocolok flux 100
- butyl rubber binder Exxony Gakki, product name Exon
- Butyl 268 an organic solvent
- Al-12 mass% Si alloy powder obtained by spraying with a gas atomizer at a nitrogen gas pressure of 20 kgfZ cm 2 and a gas metal ratio of 10 passes through a wire mesh with a mesh opening of 45 m.
- a powder having a value of V (-45) shown in Table 1 was obtained.
- a paste-like composition was prepared and evaluated in the same manner as in Examples 1 and 2. The results are shown in Table 1.
- Al-12 mass% Si alloy powder obtained by spraying with a gas atomizer at a nitrogen gas pressure of lOkgfZ cm 2 and a gas metal ratio of 10 passes through a wire mesh as a 45 m mesh sieve.
- a powder having a value of V (-45) shown in Table 1 was obtained.
- a paste-like composition was prepared and evaluated in the same manner as in Examples 3-4. The results are shown in Table 1.
- Al-12 mass% Si alloy powder obtained by spraying with a gas atomizer at a nitrogen gas pressure of 5 kgfZc m 2 and a gas metal ratio of 10 is used as a sieve with an opening of 45 ⁇ m.
- V (-45) values shown in Table 1 were obtained.
- a paste-like composition was prepared and evaluated in the same manner as in Examples 5-6. The results are shown in Table 1.
- the particle size was measured with a laser diffraction particle size measuring device (product name, Microtrac HRA, manufactured by Honeywell).
- V (-45) mass ratio of particles passing through a sieve with an opening of 45 ⁇ m
- V (-45) mass ratio of particles passing through a sieve with an opening of 45 ⁇ m
- V (-45) (B / A) X 100 (%)
- the smoothness of the paste composition was visually determined based on the following criteria.
- a 3003 aluminum plate 2 is set up vertically in the center of the coated surface of the coated plate 1 produced above, temporarily attached with a stainless steel wire, and then heated in a nitrogen gas atmosphere (nitrogen gas flow 4Nm 3 Z hours). And brazing was carried out by holding at 600 ° C for 3 minutes. After cooling, it was removed from the furnace and the throat thickness d shown in Fig. 1 was measured in order to evaluate the formability of fillet 3 in the brazed part.
- the throat thickness we measured the thickness at multiple locations along the direction perpendicular to the paper surface of Fig. 1, and found the maximum and minimum values. From the obtained maximum throat thickness (dmax) and minimum throat thickness (dmin), fillet formation was evaluated according to the following equation.
- Fillet shape is good (fillet moldability of 80% or more).
- Fillet is formed with a slightly non-uniform force (fillet forming ability 50-79%)
- the paste-like composition of the present invention can be applied to brazing aluminum-containing members.
- fins, pins, noises, tubes, and the like constituting heat exchangers such as heater cores, evaporators, condensers, etc. It can be used for brazing and joining plates.
- the paste composition of the present invention is applicable to various machine parts, vehicle parts, structural parts, sports equipment, OA equipment, daily necessities and the like without being limited to heat exchange.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Paints Or Removers (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020087012186A KR101274122B1 (ko) | 2006-04-03 | 2007-03-20 | 알루미늄 납땜용 페이스트상 조성물, 그것이 도포된알루미늄 함유 부재 및 그것을 이용한 알루미늄 함유부재의 납땜 방법 |
CN2007800020520A CN101365558B (zh) | 2006-04-03 | 2007-03-20 | 铝硬焊用糊状组合物、涂布有它的含铝构件及使用它的含铝构件的硬焊方法 |
EP07739045.8A EP2002923B1 (en) | 2006-04-03 | 2007-03-20 | Pasty composition for aluminum brazing, aluminum-containing member coated with the same, and method of brazing aluminum-containing member with the same |
US12/084,788 US7850789B2 (en) | 2006-04-03 | 2007-03-20 | Pasty composition for aluminum brazing, aluminum-containing member coated with the same, and method for brazing aluminum-containing members with the same |
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JP2006-101331 | 2006-04-03 | ||
JP2006101331A JP5026726B2 (ja) | 2006-04-03 | 2006-04-03 | アルミニウムろう付用ペースト状組成物、それが塗布されたアルミニウム含有部材、および、それを用いたアルミニウム含有部材のろう付方法 |
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PCT/JP2007/055602 WO2007114040A1 (ja) | 2006-04-03 | 2007-03-20 | アルミニウムろう付用ペースト状組成物、それが塗布されたアルミニウム含有部材、および、それを用いたアルミニウム含有部材のろう付方法 |
Country Status (7)
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US (1) | US7850789B2 (ja) |
EP (1) | EP2002923B1 (ja) |
JP (1) | JP5026726B2 (ja) |
KR (1) | KR101274122B1 (ja) |
CN (1) | CN101365558B (ja) |
TW (1) | TWI368549B (ja) |
WO (1) | WO2007114040A1 (ja) |
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WO2016139860A1 (ja) * | 2015-03-05 | 2016-09-09 | 日立金属株式会社 | ろう付け用合金粉末および接合部品 |
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US8640766B2 (en) * | 2003-05-06 | 2014-02-04 | Mitsubishi Aluminum Co., Ltd. | Heat exchanger tube |
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KR101035976B1 (ko) * | 2011-01-21 | 2011-05-23 | 서명렬 | 논-클래드된 알루미늄 소재의 브레이지용 바인더 플럭스를 이용한 알루미늄 헤더파이프의 제조방법 |
US11504814B2 (en) | 2011-04-25 | 2022-11-22 | Holtec International | Air cooled condenser and related methods |
WO2014089072A2 (en) | 2012-12-03 | 2014-06-12 | Holtec International, Inc. | Brazing compositions and uses thereof |
CN102528316B (zh) * | 2012-01-05 | 2013-07-10 | 力创(台山)电子科技有限公司 | 用于铝及其合金焊接的含钎剂焊环及其制备方法 |
JP5628266B2 (ja) | 2012-10-24 | 2014-11-19 | ハリマ化成株式会社 | 熱交換器用チューブ、熱交換器および塗膜の製造方法 |
WO2016017716A1 (ja) | 2014-07-30 | 2016-02-04 | 株式会社Uacj | アルミニウム合金ブレージングシート |
CN107073618B (zh) | 2014-12-11 | 2019-05-28 | 株式会社Uacj | 钎焊方法 |
JP6186455B2 (ja) | 2016-01-14 | 2017-08-23 | 株式会社Uacj | 熱交換器及びその製造方法 |
JP6312968B1 (ja) | 2016-11-29 | 2018-04-18 | 株式会社Uacj | ブレージングシート及びその製造方法 |
JP7053281B2 (ja) | 2017-03-30 | 2022-04-12 | 株式会社Uacj | アルミニウム合金クラッド材及びその製造方法 |
US11235418B2 (en) * | 2017-11-06 | 2022-02-01 | Fca Us Llc | Aluminum to steel braze resistance spot welding |
US20210402467A1 (en) * | 2019-03-18 | 2021-12-30 | Hewlett-Packard Development Company, L.P. | Controlling green body object deformation |
JP7450317B2 (ja) * | 2021-06-09 | 2024-03-15 | 株式会社タムラ製作所 | はんだ組成物、並びに、電子基板の製造方法 |
US20230321769A1 (en) * | 2022-04-11 | 2023-10-12 | Honeywell International Inc. | Micronized flux for jet valve dispenser |
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KR20080106888A (ko) | 2008-12-09 |
US7850789B2 (en) | 2010-12-14 |
EP2002923A9 (en) | 2009-04-22 |
JP2007275898A (ja) | 2007-10-25 |
TWI368549B (en) | 2012-07-21 |
US20090233118A1 (en) | 2009-09-17 |
TW200744781A (en) | 2007-12-16 |
EP2002923A4 (en) | 2017-07-05 |
CN101365558A (zh) | 2009-02-11 |
EP2002923B1 (en) | 2018-10-03 |
KR101274122B1 (ko) | 2013-06-13 |
CN101365558B (zh) | 2012-02-15 |
EP2002923A2 (en) | 2008-12-17 |
JP5026726B2 (ja) | 2012-09-19 |
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