CN104919070B - The manufacture method of fin aluminium alloy soldering sheet material, heat exchanger and heat exchanger - Google Patents

The manufacture method of fin aluminium alloy soldering sheet material, heat exchanger and heat exchanger Download PDF

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Publication number
CN104919070B
CN104919070B CN201380055967.3A CN201380055967A CN104919070B CN 104919070 B CN104919070 B CN 104919070B CN 201380055967 A CN201380055967 A CN 201380055967A CN 104919070 B CN104919070 B CN 104919070B
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China
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core
mass
filler metal
aluminium alloy
sheet material
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CN201380055967.3A
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CN104919070A (en
Inventor
久富裕二
田中寿和
山下尚希
尾崎良太
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UACJ Corp
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UACJ Corp
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Classifications

    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • 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
    • 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
    • B23K35/0233—Sheets, foils
    • 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
    • B23K35/0233—Sheets, foils
    • B23K35/0238—Sheets, foils layered
    • 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
    • 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
    • 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
    • B23K35/24—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
    • B23K35/288—Al as the principal constituent with Sn or Zn
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—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
    • F28D1/02—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 heat-exchange conduits immersed in the body of fluid
    • F28D1/04—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 heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—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 heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—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 heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and 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
    • F28F1/126—Tubular elements and 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 consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys

Abstract

There is provided fin aluminium alloy soldering sheet material, the only side of the core wherein being formed by aluminium alloy is coated with the brazing material being formed by the aluminium alloy including Si and Zn.Described fin aluminium alloy soldering sheet material is characterised by：The thickness of described fin aluminium alloy soldering sheet material is below 0.15mm, and in 3 minutes heat runs at 600 DEG C, the potential difference between the core side surface of the soldering sheet material after heat run and brazing material side surface is 40 to+40mV.The present invention can provide the fin aluminium alloy soldering sheet material of heat exchanger, and it is that the only side of core is coated with the fin aluminium alloy soldering sheet material of brazing material, improves the corrosion resistance of fin material, and is excellent with respect to the corrosion resistance of tubing.

Description

The manufacture method of fin aluminium alloy soldering sheet material, heat exchanger and heat exchanger
Technical field
The present invention relates to the aluminium alloy soldering sheet material (brazing as fin material (fin material) Sheet), described fin material is used for the heat exchange by manufacturing aluminum alloy tube material and aluminium alloy fin material soldering Device, such as radiator, heater core, oil cooler, intercooler or the condenser for air conditioning for automobiles or room conditioning Or vaporizer.Especially, the present invention relates to showing the aluminium alloy soldering lug as fin material of excellent corrosion resistance Material.The invention still further relates to showing heat exchanger and its manufacture method of excellent corrosion resistance.
Background technology
The heat exchanger being manufactured by the following has been widely used as car heat exchanger, for example radiator, heater core, Oil cooler, intercooler or the vaporizer for air conditioning for automobiles or condenser：It is alternately stacked by squeezing that aluminium alloy is formed The flat tubing (process fluid via material) that goes out or by being processed as soldering sheet material (wherein core is coated with filler metal) Flat tubular and the tubing that obtains, and by by aluminum alloy base material process the corrugated and corrugated fin material that obtains or Each side of wherein core is coated with the soldering sheet material of Al-Si- system filler metal, is optionally fitted with header material (header Material), header plate (header plate) and process fluid inlet tube/outlet etc., and by gained assembly using profit Solder flux method for welding or vacuum brazing method soldering (hereinafter referred to " corrugated fin formula heat exchanger ") with fluorine system solder flux.
By will with many plate wings of stacked spaced apart and insertion plate wing in tubing combination and manufacture heat exchanger (hereafter In referred to as " plate fin type heat exchanger "), be widely used as air-conditioning and heat exchanger for refrigerator.Construction plate fin type heat exchanger So that between the air of the cold-producing medium being circulated by pipe arrangement and contact plate wing exchanged heat.Because aluminum is lightweight and shows excellent Different heat conductivity and processability, therefore aluminum already function as plate fin one-tenth material.The surface of plate wing is carried out at hydrophilic surface Reason is so that the situation of water droplet blocking that produced by the condensation of vapor in the atmosphere of the space between preventing wherein fin.Plate wing Surface can carry out water repellency surface treatment so that water droplet falls rapidly from the surface of plate wing.Show excellent heat conductivity and The copper of processability has been used as the formation material of tubing.When manufacturing plate fin type heat exchanger, stacking is wherein with specific configuration shape Become the plate wing of cylindric through hole, and tubing is inserted cylindric through hole.Make the outer peripheral face of tubing by increasing the diameter of tubing Contact with the inner surface of through hole thus being mechanically fixed against tubing and fin.
In recent years, the price for the copper of the tubing of plate fin type heat exchanger rises, and when using copper pipe, plate-fin heat is handed over The production cost of parallel operation increases.Therefore, having studied is used aluminum to replace copper as tubing with material.Can also close by using aluminum Gold manufactures tubing to improve recirculation.
Increase the total surface area of plate wing by reducing the interval between plate wing to improve the heat friendship of plate fin type heat exchanger Transsexual can be effective.However, the water of in the air may condense, and it is attached to the fin positioned at vaporizer side during operation Surface, the space between plate wing may be blocked by water droplet.This phenomenon is properly termed as " bridging phenomenon (bridge phenomenon)”.When bridging phenomenon occurs, air flow circuit blocks, and heat exchange performance deterioration.Therefore, generally will be hydrophilic Property coating etc. be applied to the surface of fin material to prevent condensed water from forming the situation of water droplet.
When being used aluminium alloy as tubing material manufacture plate fin type heat exchanger, material of plate fin and tubing are by making pipe Material extension (with the situation identical mode using copper pipe) make tubing be bonded to material of plate fin, or by material of plate fin and pipe Material to be combined (JP-A-3-138080) using brazing fin soldering.
Prior art literature
Patent documentation
Patent documentation 1：JP-A-3-138080 (claim)
Content of the invention
Problems to be solved by the invention
When aluminium alloy soldering sheet material (fin material) pricker by the only side of wherein core being coated with filler metal When weldering is to manufacture heat exchanger, (that is, include greatly on the surface of fin material because the Si of the component as filler metal remains in The layer of the Si of amount dissolving remains on the surface of fin material), so surface potential increases.Therefore, when at fin (shutter) Between when forming water bridge, there is potential difference, and the corruption of fin material between the core of fin material and the surface of filler metal Erosion amount increases.
In view of above-mentioned condition, it is an object of the invention to provide the only side as wherein core is coated with filler metal The aluminium alloy soldering sheet material of fin, described aluminium alloy soldering sheet material improves the corrosion resistance of fin material, and gives tubing It is provided with excellent corrosion resistance.
For solution to problem
The present inventor is furtherd investigate to solve the above problems.As a result, the inventors discovered that can pass through Using between the core side surface of the soldering sheet material to carry out heat run under given conditions and filler metal side surface The soldering sheet material that designs of the mode that falls in particular range of potential difference can improve the corrosion resistance of fin material.This discovery is led Cause completing of the present invention.
According to an aspect of the present invention, the aluminium alloy soldering sheet material as fin includes the core being formed by aluminium alloy, With by the filler metal that formed of aluminium alloy including Si and Zn, the only side of described core is coated with filler metal,
The thickness of described aluminium alloy soldering sheet material is below 0.15mm, and
At 600 DEG C, core side surface and the filler metal side surface of the heat run soldering sheet material of 3 minutes have been carried out Between potential difference be -40 to+40mV.
According to the second aspect of the invention, the manufacture method of heat exchanger include by by least assembling fin material and by Tubing that aluminium alloy is formed and the assembly soldering that obtains, described fin material passes through to close aluminum according to the first aspect of the invention Gold soldering sheet material processed is processed and to be obtained.
According to the third aspect of the invention we, heat exchanger will be by forming by least assembling fin material with by aluminium alloy Tubing and the assembly soldering that obtains obtaining, described fin material is formed by the soldering sheet material including core and filler metal, The only side of described core be coated with filler metal, and soldering after the core side surface of fin material and filler metal side table Potential difference between face is -40 to+40mV.
The effect of invention
A first aspect of the present invention thus provide the aluminium alloy soldering sheet material as fin, only the one of core in fin Side is coated with filler metal, and described aluminium alloy soldering sheet material improves the corrosion resistance of fin material, and is provided with to tubing Excellent corrosion resistance.A second aspect of the present invention and the third aspect thus provide the heat friendship showing excellent corrosion resistance Parallel operation.
Brief description
Fig. 1 is the schematic cross-sectional illustrating the example of aluminium alloy soldering sheet material according to an embodiment of the invention Figure.
Fig. 2 is the side view illustrating to carry out the configuration status of the sample of heat run.
Fig. 3 is the schematic perspective view illustrating corrugated fin material.
Fig. 4 is the schematic side elevational view illustrating wherein to assemble the state of corrugated fin material and tubing.
Specific embodiment
The aluminium alloy soldering sheet material as fin according to an embodiment of the invention (is hereinafter properly termed as " aluminum Alloy soldering sheet material " or " soldering sheet material ") include the core that formed by aluminium alloy, and formed by the aluminium alloy including Si and Zn Filler metal, the only side of described core is coated with filler metal, and the thickness of described aluminium alloy soldering sheet material is 0.15mm Hereinafter, and core side surface and the filler metal side surface of the heat run soldering sheet material of 3 minutes are carried out at 600 DEG C Between potential difference be -40 to+40mV.
Aluminium alloy soldering lug timber-used according to an embodiment of the invention makees aluminum fin material, and wraps Include the core being formed by aluminium alloy, and the filler metal being formed by the aluminium alloy including Si and Zn, the only side of described core is covered It is stamped filler metal.
Fig. 1 is the schematic cross-sectional illustrating the example of aluminium alloy soldering sheet material according to an embodiment of the invention Figure.The only side that aluminium alloy soldering sheet material 1 shown in Fig. 1 has the core 2 wherein being formed by aluminium alloy is coated with by aluminum The structure of the filler metal 3 that alloy is formed.In Fig. 1, reference 4 represents the core side of soldering sheet material, and reference 5 represents pricker The filler metal side of weld tabs material.
The core that aluminium alloy soldering sheet material according to an embodiment of the invention includes is formed by aluminium alloy.Core Composition be not particularly limited, and in view of including as the performance required by the core of fin material and filler metal Potential difference between core side surface after the relation of each element and soldering (soldering is with heating) and filler metal side surface etc. is come Properly select.
The filler metal that aluminium alloy soldering sheet material according to an embodiment of the invention includes is by including Si and Zn Aluminium alloy as necessary component is formed.Si content in filler metal and Zn content consider the core institute as fin material Core side surface after the performance requiring and the relation of each element that includes of core and soldering and filler metal side surface it Between potential difference etc. properly selecting.Filler metal can also optionally include various elements in addition to Si and Zn.
The thickness of aluminium alloy soldering sheet material according to an embodiment of the invention is below 0.15mm, and is preferably 0.05 to 0.15mm.When the thickness of soldering sheet material exceedes above range (that is, when the volume of fin material is big), even if corrosion Speed increases, and fin material also remains, and sacrificial anode effect also certain time.Upper accordingly, with respect to corrosion resistance Occur to the only little degree of problem of stating.
Aluminium alloy soldering sheet material according to an embodiment of the invention is characterised by carrying out at 600 DEG C adding Potential difference (the electricity of core side surface between the core side surface of the heat test soldering sheet material of 3 minutes and filler metal side surface The current potential of position-filler metal side surface) it is -40 to+40mV, and preferably -20 to+20mV.When the pricker having carried out heat run Potential difference between the core side surface of weld tabs material and filler metal side surface within the above range when, it is possible to reduce due to fin The water bridge that formed between material (shutter) and the etching extent that causes, and improve the corrosion resistance of fin material.If Carry out potential difference between the core side surface of the soldering sheet material of heat run and filler metal side surface outside the above range, The corrosion resistance of fin material may reduce.Note：- 40 to+40mV potential difference refers to -40 to 0mV and 0 to+40mV model Enclose, and mean that the absolute value of potential difference is below 40mV.
To be described in the heat run carrying out at 600 DEG C 3 minutes below with reference to Fig. 2.Fig. 2 is to illustrate to carry out heat run The side view of the configuration status of sample, wherein (A) illustrate the sample before heat run, and (B) illustrates the examination after heat run Sample.The soldering sheet coupon 11 with the structure that wherein core 12 is coated with filler metal 13 is suspended in heating furnace so that Core side surface 14 and filler metal side surface 15 extend vertically.By soldering sheet coupon 11 in nitrogen scope with 7.5 DEG C/ The firing rate of min is heated to 600 DEG C (maximum temperatures) from 450 DEG C, keeps 3 minutes at 600 DEG C, and with 15 DEG C/min's Rate of cooling is cooled to 450 DEG C from 600 DEG C.Then measurement core side surface 19 (that is, being not covered with the surface of filler metal) with Potential difference (the electricity on the current potential-surface 20 on surface 19 between filler metal side surface 20 (that is, being coated with the surface of filler metal) Position).Filler metal 13 is flowed downward along the surface of core 12 due to heating, and most of filler metal 13 moves to core The bottom of material 12.Note：A small amount of filler metal 13 remains in the filler metal side surface of core 12.
In the filler metal that aluminium alloy soldering sheet material preferably according to an embodiment of the invention includes Zn content high 0.2 to 3.0 quality % and particularly preferred 0.3 to 1.5 quality % than the Zn content in core.Specifically, preferably Be Zn content and core in the filler metal that aluminium alloy soldering sheet material according to an embodiment of the invention includes In the difference (the Zn content in Zn content-core in filler metal) of Zn content be 0.2 to 3.0 quality % and particularly preferably 0.3 to 1.5 quality %.When the Zn content in the Zn content in filler metal and core difference within the above range when, and wherein The situation that core is coated with the soldering sheet material of known Al-Si- system filler metal is compared, it is possible to reduce the core side table after soldering Potential difference between face and filler metal side surface.This core side surface after allowing to easily control soldering and filling gold The potential difference belonging between side surface is -40 to+40mV (preferably -20 to+20mV), and improves the corrosion resistance of fin material. If the difference of the Zn content in filler metal and the Zn content in core is less than above range, core side surface and filler metal Potential difference between side surface may be outside the scope of -40 to+40mV (preferably -20 to+20mV), and core may be very big Degree ground corrosion (that is, corrosion resistance may reduce).If the difference of the Zn content in filler metal and the Zn content in core surpasses Cross above range, the current potential due to the surface of filler metal may largely reduce, so filler metal side surface may Serve as anode, and core side surface may serve as negative electrode, may largely be corroded by this filler metal (that is, corrosion-resistant Property may reduce).Due to coming the amount of the Zn from filler metal angle welding (fillet) place between fin material and tubing Increase, so while the reduction of current potential, angle welding may preferentially be corroded, and is stripped.Note：Zn content is 0 mass % Core can be coated with filler metal, so that the difference of the Zn content in the Zn content in filler metal and core falls in above-mentioned model In enclosing.
The core that aluminium alloy soldering sheet material preferably according to an embodiment of the invention includes by include select From among the Zn below the Si below the Mn below 2.0 mass %, 1.5 mass %, the Fe below 1.5 mass % and 4 mass % A kind of element or two or more elements, the aluminium alloy of balance of Al and inevitable impurity formed.
Mn in core increases the intensity of core, and improves high temperature resistant warpage properties.Mn content in core is preferably 2.0 Below quality %, particularly preferred 0.5 to 2.0 quality %, and still more preferably 1.0 to 1.7 quality %.If the Mn content in core Exceed above range, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make Obtain difficult to manufacture covering material (clad material).
Si in core and Mn or Fe etc. forms fine precipitate, and increases the intensity of core.Additionally, Si reduces Mn Meltage, and improve thermal conductivity (conductivity).Below Si content in core preferably 1.5 mass %, particularly preferred 0.1 To 1.5 mass %, and still more preferably 0.3 to 1.1 quality %.If the Si content in core exceedes above range, core Fusing point may reduce, and may easily deform or partial melting during soldering.
Fe in core increases the intensity of the fin material before and after soldering together with Mn.Fe content in core is preferably Below 1.5 mass %, particularly preferred 0.1 to 1.5 quality %, and still more preferably 0.3 to 0.8 quality %.If the Fe in core Content exceedes above range, and crystal grain may attenuate, and the filler metal melting may corrode core.As a result, high temperature resistant warpage Property may reduce, and may increase from corrosivity.
Zn in core reduces the current potential of core, and improves sacrificial anode effect.Zn content in core is preferably 4.0 Below quality %, particularly preferred 0.5 to 4.0 quality %, and still more preferably 0.5 to 3.0 quality %.If the Zn content in core Exceed above range, the resistance to of core may deteriorate from corrosivity, and intergranular corrosion sensitivity may increase.
In addition to above-mentioned element, core may further include below the Cu below 0.5 mass %, 1.0 mass % Mg, the Zr below 0.3 mass %, the Cr below 0.3 mass %, the Ti below 0.3 mass %, the Sr below 0.3 mass %, Sn below Ni below 1.5 mass %, the 0.1 mass % and In below 0.1 mass % one of element or two kinds with On element.
Cu in core increases the intensity of the fin material before and after soldering, but reduces resistance to intergranular corrosion.In core Cu content be preferably 0.5 mass % below, particularly preferred 0.05 to 0.5 quality %, and still more preferably 0.1 to 0.3 quality %. If the Cu content in core exceedes above range, the current potential of fin material may increase, and the sacrificial anode of fin material Effect may reduce.Additionally, resistance to intergranular corrosion is likely to reduce.
Mg in core increases the intensity of the fin material before and after soldering by forming precipitate with Si.Mg in core Content is preferably below 1.0 mass %, particularly preferred 0.05 to 1.0 quality %, and still more preferably 0.3 to 0.6 quality %.If Mg content in core exceedes above range, and the fusing point of core may reduce, and may easily become during soldering Shape or partial melting.
Zr in core increases the intensity of the fin material before and after soldering, and improves high temperature resistant warpage properties.In core Zr content is preferably below 0.3 mass %, and particularly preferred 0.01 to 0.3 quality %.If the Zr content in core exceedes State scope, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make it difficult to Manufacture sheet material.
Cr in core increases the intensity of the fin material before and after soldering, and improves high temperature resistant warpage properties.In core Cr content is preferably below 0.3 mass %, and particularly preferred 0.01 to 0.3 quality %.If the Cr content in core exceedes State scope, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make it difficult to Manufacture sheet material.
Ti in core make fin material before brazing after by banded corrosion, and suppress local corrosion.In core Ti content is preferably below 0.3 mass %, and particularly preferred 0.01 to 0.3 quality %.If the Ti content in core exceedes State scope, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make it difficult to Manufacture sheet material.
Sr in core diffuses to filler metal from core during soldering and solidification, and reduces filling gold after soldering The granularity of the Si belonging to.Sr content in core is preferably below 0.3 mass %, and particularly preferred 0.005 to 0.3 quality %.As Sr content in fruit core exceedes above range, may produce coarse crystallized product during casting, and may weaken and roll Processability processed.This may make it difficult to manufacture sheet material.
Ni in core increases the intensity of the fin material before and after soldering.Ni content in core is preferably 1.5 mass % Hereinafter, particularly preferred 0.05 to 1.5 quality %, and still more preferably 0.1 to 0.5 quality %.If the Ni content in core exceedes Above range, crystal grain may attenuate, and the filler metal melting may corrode core.As a result, high temperature resistant warpage properties may drop Low, and may increase from corrosivity.
Sn in core reduces the surface potential of core, and improves sacrificial anode effect.Sn content in core is preferred Below 0.1 mass %, and particularly preferred 0.005 to 0.1 quality %.If the Sn content in core exceedes above range, can Coarse crystallized product can be produced during casting, and rolling processability may be weakened.This may make it difficult to manufacture sheet material.
In in core reduces the surface potential of core, and improves sacrificial anode effect.In content in core is preferred Below 0.1 mass %, and particularly preferred 0.005 to 0.1 quality %.If the In content in core exceedes above range, can Coarse crystallized product can be produced during casting, and rolling processability may be weakened.This may make it difficult to manufacture sheet material.
In addition to above-mentioned element, core may further include the Ga of below 0.3 mass %.Ga in core reduces wing The current potential of sheet material, substantially without reduce fin material thermal conductivity thus providing sacrificial anode effect.
In addition to above-mentioned element, core may further include Pb, Li, Ca or Na of below 0.1 mass %.
In addition to above-mentioned element, core may further include the Mo of below the V of below 0.3 mass % or 0.3 mass % To improve the intensity of core.In addition to above-mentioned element, core may further include the B of below 0.1 mass % to prevent Oxidation.
The filler metal that aluminium alloy soldering sheet material according to an embodiment of the invention includes is by including Si and Zn Aluminium alloy as necessary component is formed.Preferably filler metal is by Si and 0.2 to 7 quality % including 2 to 14 quality % The aluminium alloy of Zn formed, surplus is Al and inevitable impurity.
Si in filler metal reduces the fusing point of filler metal, and improves the mobility of the filler metal of melting.Filling Si content in metal is preferably 2 to 14 quality % and particularly preferred 6 to 11 quality %.If the Si content in filler metal Less than above range it may not be possible to realize sufficient effect.If the Si content in filler metal exceedes above range, fusing point can Can largely increase, and processability may deteriorate.
Zn in filler metal improves sacrificial anode effect.Zn content in filler metal is preferably 0.2 to 7 quality %. If the Zn content in filler metal is less than above range it may not be possible to realize sufficient effect.If the Zn in filler metal Content exceedes above range, and processability may deteriorate, and may increase because the reduction of natural potential leads to certainly corrode.
In addition to above-mentioned element, filler metal may further include Sn below 0.3 mass %, 0.3 mass % Below Fe below Sr below following In, 0.3 mass %, the Mg below 1.5 mass %, 0.8 mass %, 0.8 mass % Ni, Cu, the Mn below 2.0 mass % below 0.5 mass % and the Ti below 0.3 mass % one of element or Two or more elements.
Sn in filler metal reduces the surface potential of filler metal, and improves sacrificial anode effect.In filler metal Sn content be preferably below 0.3 mass %, and particularly preferred 0.001 to 0.3 quality %.If the Sn content in filler metal Exceed above range, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make Obtain difficult to manufacture sheet material.
In in filler metal reduces the surface potential of filler metal, and improves sacrificial anode effect.In filler metal In content be preferably below 0.3 mass %, and particularly preferred 0.001 to 0.3 quality %.If the In content in filler metal Exceed above range, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make Obtain difficult to manufacture sheet material.
The granularity of Si in the filler metal after Sr reduction soldering in filler metal.Sr content in filler metal is preferred Below 0.3 mass %, and particularly preferred 0.001 to 0.3 quality %.If the Sr content in filler metal exceedes above-mentioned model Enclose, coarse crystallized product may be produced during casting, and rolling processability may be weakened.This may make it difficult to manufacture Sheet material.
Mg in filler metal increases the intensity of the fin material before and after soldering by forming precipitate with Si.Filling gold Mg content in genus is preferably below 1.5 mass %, particularly preferred 0.05 to 1.5 quality %, and still more preferably 0.3 to 0.6 matter Amount %.If the Mg content in filler metal exceedes above range, the fusing point of filler metal may reduce, and the erosion of core May increase.
Fe in filler metal and suppresses local corrosion in filler metal internal diffusion so that corrosion starting point dispersion.Fill out Fill Fe content in metal and be preferably below 0.8 mass %, particularly preferred 0.05 to 0.8 quality %, and still more preferably 0.05 to 0.3 mass %.If the Fe content in filler metal exceedes above range, may increase from corroding.
Ni in filler metal and suppresses local corrosion in filler metal internal diffusion so that corrosion starting point dispersion.Fill out Fill Ni content in metal and be preferably below 0.8 mass %, particularly preferred 0.05 to 0.8 quality %, and still more preferably 0.05 to 0.3 mass %.If the Ni content in filler metal exceedes above range, may increase from corroding.
Cu in filler metal increases the current potential of the angle welding after soldering, and improves the corrosion resistance at junction surface.Fill out Fill Cu content in metal and be preferably below 0.5 mass %, particularly preferred 0.05 to 0.5 quality %, and still more preferably 0.1 to 0.3 mass %.If the Cu content in filler metal exceedes above range, the current potential of fin material may increase, and sacrifices Anode effect may reduce.
Mn in filler metal and Si forms compound, and increases the quantity of corrosion starting point.Mn in filler metal contains Amount is preferably below 2.0 mass %, particularly preferred 0.05 to 2.0 quality %, and still more preferably 0.1 to 1.5 quality %.If filled out The Mn content filled in metal exceedes above range, may produce coarse crystallized product, and face crack can during casting Can occur during rolling.This may lead to productive reduction.
Ti in filler metal and Si forms compound, and increases the quantity of corrosion starting point.Ti in filler metal contains Amount is preferably below 0.3 mass %, and particularly preferred 0.05 to 0.3 quality %.If the Ti content in filler metal exceedes State scope, coarse crystallized product may be produced during casting, and face crack may occur during rolling.This may Lead to productive reduction.
In addition to above-mentioned element, filler metal may further include the Cr of below 0.3 mass %, below 0.1 mass % Pb, the Li below the 0.1 mass % or Ca below 0.1 mass %.
In addition to above-mentioned element filler metal may further include the Ti of below 0.3 mass % or 0.01 mass % with Under Pb to make cast structure miniaturization.In addition to above-mentioned element filler metal may further include 0.1 mass % with Under Na to make the Si Particle pollution in filler metal.In addition to above-mentioned element, filler metal may further include Ga below 0.1 mass % to provide sacrificial anode effect will pass through the current potential reducing filler metal.Except above-mentioned element it Outer filler metal may further include the Be of below 0.1 mass % so that the growth of suppression surface oxide film.Except above-mentioned Outside element, filler metal may further include the Bi of below 0.4 mass % to improve the mobility of filler metal.
The thickness of filler metal consider soldering after core side surface and filler metal side surface between potential difference, fill out Fill the engaging profile between the Si content in metal, fin and pipe arrangement and spacing of fin etc. to properly select.Filler metal Thickness is preferably more than 7 μm, and particularly preferred 7 to 30 μm.If the thickness of filler metal is less than 7 μm, from filler metal diffusion Amount to the Zn of core may increase during soldering, and the Zn that includes of filler metal after being likely difficult to control soldering Amount.It is therefore preferable that setting the thickness of filler metal as more than 7 μm, this is due to can easily control the gold of the filling after soldering The amount of the Zn that genus includes, and easily control the potential difference between core side surface and filler metal side surface after soldering It is -40 to+40mV (preferably -20 to+20mV).Note：By adjust core in Zn content, the Zn content in filler metal, Si content in filler metal, brazing temperature and holding time etc., though when filler metal thickness be less than 7 μm when it is also possible to Control the potential difference between core side surface and filler metal side surface after soldering be -40 to+40mV (preferably -20 to+ 20mV).
The only side that aluminium alloy soldering sheet material according to an embodiment of the invention has wherein core is coated with and fills out Fill the structure of metal.The covering with filler metal properly selects than within normal range, and is preferably 3 to 25%.As Fruit has the covering ratio of filler metal less than above range, and the amount of the filler metal of melting may reduce during soldering, and Angle welding may deficiently be formed.If the covering ratio with filler metal exceedes above range, the filler metal of melting Amount may largely increase during soldering, and core may melt.
Aluminium alloy soldering sheet material according to an embodiment of the invention is by covering the side filler metal of core Cover and to obtain.As described below can cover core with filler metal.Specifically, will have and be included according to the present invention one The composition identical composition of each element comprising in the core in the aluminium alloy soldering sheet material of embodiment or filler metal Core alloy ingot bar and filler metal alloy ingot bar are cast.Core alloy ingot bar is used conventional method homogenization, and By filler metal alloy ingot bar hot rolling.The filler metal alloy ingot bar of the core alloy ingot bar of homogenization and hot rolling is overlapped and puts Put, and make its hot rolling thus obtaining cover sheets.Cover sheets are cold rolling, optionally carry out intermediate annealing, and carry out Whole cold rolling thus obtaining aluminium alloy soldering sheet material.Aluminium alloy soldering sheet material is corresponded to the width cutting of product, and As fin material.
The manufacture method of heat exchanger according to an embodiment of the invention is included by least assembling fin material With the tubing being formed by aluminium alloy and the assembly soldering that obtains, described fin material passes through will according to an embodiment of the invention Aluminium alloy soldering sheet material process obtaining.
The fin material that the manufacture method of heat exchanger according to an embodiment of the invention uses passes through will be according to this The aluminium alloy soldering sheet material of one embodiment of invention is processed as the shape of fin material to obtain.
The tubing that the manufacture method of heat exchanger according to an embodiment of the invention uses is not particularly limited, as long as institute Stating tubing is the tubing being formed by the aluminium alloy for heat exchanger, and serves as the cold-producing medium flowing by its cold-producing medium Pipeline.The outside of tubing can be coated with filler metal, or can cover without filler metal.
When the manufacture method of the heat exchanger implemented according to an embodiment of the invention, fin material and tubing are optional Ground together with header material, tank material, side backing material, barrier material, cap material and timbering material etc. assembling thus acquisition group Part.
By by least assembling fin material and tubing obtain assembly at a certain temperature soldering special time thus obtaining Obtain heat exchanger.
When the manufacture method of the heat exchanger implemented according to an embodiment of the invention, brazing temperature is 590 to 605 DEG C, and the holding time be 1 to 10 minute.By assembly in noble gases such as nitrogen atmosphere, helium atmosphere or argon gas atmosphere pricker Weldering.
The heat exchanger being manufactured using the manufacture method of heat exchanger according to an embodiment of the invention can be plate Fin type heat exchanger or corrugated fin formula heat exchanger.
For example, plate-fin is fabricated as described below using the manufacture method of heat exchanger according to an embodiment of the invention Heat exchanger.When manufacturing plate fin type heat exchanger, fin material is processed as the shape of plate-shaped fins material.Plate-shaped fins material Material is by forming multiple through holes so that inwall (collar) is disposed therein the region placing tubing in aluminium alloy soldering sheet material In, and provide for promoting multiple slits of the turbulent flow of the air in the flat area between through hole to manufacture.Collar End is located at given height, or is flared out into the shape with extension.Filler metal side when plate-shaped fins material When surface is the inner side of collar of contact tubing, obtains firm metal and engage, the heat transfer performance between cold-producing medium and air Increase, and improve the intensity of heat exchanger.When tubing diameter increase, and mechanical bond to fin material when, or work as When the tubing being coated with filler metal in outside is used as described tubing, tubing can be placed and make tubing contact tabular fin material Core side surface.The example of tubing includes copper pipe and aluminum pipe etc..By many plate-shaped fins materials with stacked spaced apart, by tubing Insertion plate-shaped fins material in formed through hole to assemble fin material and tubing, and be optionally fitted with extra component thus Obtain assembly.By assembly soldering to obtain plate fin type heat exchanger.
For example, ripple wing is fabricated as described below using the manufacture method of heat exchanger according to an embodiment of the invention Plate heat exchanger.Fig. 3 is the schematic perspective view illustrating corrugated fin material.Fig. 4 is to illustrate wherein to assemble corrugated wing The schematic side elevational view of the state of sheet material and tubing.When manufacturing corrugated fin formula heat exchanger, fin material is processed as The shape of corrugated fin material.For example, the corrugated fin material 21 shown in Fig. 3 passes through aluminium alloy soldering sheet material 1 Corrugated, and core side surface 4 is located at the ridge 26 in outside (that is, wherein core side surface 4 contacts the area of tubing wherein Domain 26) in form slit 25 obtaining.Filler metal flows through ridge 26 (wherein core side surface 4 is located at outside) during soldering The slit of middle formation is thus form angle welding.Design corrugated fin material 21 makes slit not be formed at wherein filler metal side Surface 5 is located at the ridge 27 (that is, wherein filler metal side surface 5 contacts the region 27 of tubing) in outside.The example of tubing includes Extruding pipe and bend pipe etc..When being used extruding pipe as described tubing, the resistance to pit corrosion of tubing passes through by means of zinc is warm It is sprayed onto the surface of extruding pipe and add sacrificial anode layer or be arranged on the outer surface of pipeline using wherein sacrificial anode layer Cover pipe to be improved.When being used bend pipe as described tubing, the resistance to pit corrosion of tubing is sacrificial by using being coated with The sheet material of domestic animal anode layer is being improved.Tubing can be the shape of pipe, elliptical tube or flat tube etc..When using pipe, Groove is formed by the inner surface in pipe and improves heat exchange performance.When using flat tube, multiple interior by using having Many mouthfuls of pipes of post are improving resistance to pressure and heat exchange performance.Heat exchange performance passes through to obtain further in the inwall formation groove of pipe Improve.As shown in Figure 4 (referring to (A)), corrugated fin material 21 and tubing 22 (flat tube) are alternately stacked (assembling), and And it is optionally fitted with extra component thus obtaining assembly.Assembling corrugated fin material 21 so that ridge 26 downwards, and Ridge 27 is towards top.By assembly heating thus wherein corrugated fin material 21 ridge contact tubing 22 region in shape Become angle welding (that is, by assembly soldering) thus obtaining corrugated fin formula heat exchanger ((B) referring in Fig. 4).Note：Its SMIS The soldering sheet material that each side of material is coated with filler metal has been used in the manufacture of corrugated fin formula heat exchanger.According to the present invention one The soldering sheet material that the manufacture method of the heat exchanger of embodiment is coated with filler metal using the only side of wherein core is (i.e., Aluminium alloy soldering sheet material according to an embodiment of the invention).
Heat exchanger according to an embodiment of the invention will be by means of will be closed by least assembling fin material and by aluminum Obtaining, described fin material is by the aluminium alloy pricker including core and filler metal for the assembly soldering that the tubing that gold is formed obtains Weld tabs material is formed, and the only side of core is coated with the core side surface of fin material and filling gold after filler metal, and soldering The potential difference belonging between side surface is -40 to+40mV.
Fin material for manufacturing heat exchanger according to an embodiment of the invention by wherein core only passes through The aluminium alloy soldering sheet material that side is coated with filler metal is processed as the shape of fin material to obtain.Fin material can be Plate-shaped fins material or corrugated fin material.Can be used for manufacturing the plate of heat exchanger according to an embodiment of the invention The shape of shape fin material and corrugated fin material and manufacture method are and heat exchange according to an embodiment of the invention Plate-shaped fins material and those identicals of corrugated fin material that the manufacture method of device uses.
For manufacturing the only side by wherein core for the fin material of heat exchanger according to an embodiment of the invention The aluminium alloy soldering sheet material being coated with filler metal is formed.Fin material preferably passes through will according to an embodiment of the invention Aluminium alloy soldering sheet material process obtaining.
Tubing for manufacturing heat exchanger according to an embodiment of the invention is not particularly limited, as long as described tubing It is the tubing for plate fin type heat exchanger or corrugated fin formula heat exchanger.For manufacturing according to one enforcement of the present invention The tubing of the heat exchanger of scheme is the tubing with the manufacture method use of heat exchanger according to an embodiment of the invention Identical.
Heat exchanger according to an embodiment of the invention by will at least obtain in fin material and tubing soldering.Pricker Potential difference (the current potential of core side surface-filling gold between the core side surface of postwelding fin material and filler metal side surface Belong to the current potential of side surface) it is -40 to+40mV, and preferably -20 to+20mV.After soldering the core side surface of fin material with fill out Fill potential difference between metal side surface within the above range when, it is possible to reduce due to formed between fin material (shutter) The etching extent that water bridge causes, and improve the corrosion resistance of fin material.If after soldering the core side surface of fin material with Outside the above range, then the corrosion resistance of fin material may reduce potential difference between filler metal side surface.
In Fig. 4, after soldering, the core side surface of fin material is not covered with the fin material of filler metal before referring to soldering The surface 29 of material, after soldering, the filler metal side surface of fin material is coated with the fin material of filler metal before referring to soldering Surface 30.
When manufacturing brazing temperature, holding time and the soldering adopting during heat exchanger according to an embodiment of the invention Atmosphere is identical with those adopting during the manufacture method of heat exchanger according to an embodiment of the invention when enforcement.
Further describe the present invention below by way of embodiments and comparative examples.Note：Following embodiments only for illustration purpose, and And the invention is not restricted to following embodiments.
Embodiment
(embodiment and comparative example)
<The manufacture of soldering sheet material>
Casting has the core aluminium alloy of the composition shown in table 1 or 3 and has the filling of the composition shown in table 2 or 4 Metal aluminum alloy, and using conventional method by its homogenization.By the ingot bar hot rolling of filler metal aluminium alloy, and by core aluminum The side of the ingot bar of alloy is coated with the hot rolling ingot bar of filler metal aluminium alloy with 10% ratio.Products therefrom is carried out heat Roll, cold rolling, intermediate annealing and final cold rolling, thus obtaining the soldering sheet material with the thickness shown in table 5,6,9 or 10.
<Evaluate>
1. the heat run (1) of 3 minutes at 600 DEG C
Using gained soldering sheet material prepare length be 150mm, width be the sample that 50mm and thickness are 0.10mm.By sample It is suspended in heating furnace so that core side surface and filler metal side surface extend vertically.By sample in blanket of nitrogen with 7.5 DEG C/ The rate of heat addition of min is heated to 600 DEG C (maximum temperatures) from 450 DEG C, is maintained at 3 minutes at 600 DEG C, and with 15 DEG C/min's Cooldown rate is cooled to 450 DEG C from 600 DEG C.
Then the potential difference between measurement core side surface and filler metal side surface.Result is shown in table 7,8,11 and 12 In.
2. Braze tests (2)
Compacting gained soldering sheet material is to obtain corrugated fin material (width：20mm, spacing：1.0mm, highly：10mm). By (that is, the many mouthfuls of flat tubes of fine aluminium being provided with the Zn surface treatment) assembling of gained fin material and tubing thus obtain core (100 × 100mm).After fluorine system solder flux is sprayed to core, by core soldering under 600 DEG C (maximum temperature) in an inert atmosphere.Core is cold But the potential difference after, between measurement core side surface and filler metal side surface.Result is shown in table 7,8,11 and 12.
Then measurement soldering after core weight.Using silicone sealant cover refrigerant inlet and refrigerant outlet it Afterwards, core is carried out SWAAT corrosion testing 1 week.After removing erosion using phosphoric acid and chromic acid, core is dried.Removing silicon After ketone sealant, the weight of measurement core, and calculated weight slip.Result is shown in table 7,8,11 and 12.Will be because of SWAAT Corrosion testing and situation that the weight reduction rates of core that cause are less than 20% are evaluated as acceptable, will corrode examination because of SWAAT The situation more than 20% for the weight reduction rates of the core tested and cause is evaluated as unacceptable.The maximum corrosion of also detection tubing is deep Etch state of degree and fin etc..Result is shown in table 7,8,11 and 12.
Table 1
Table 2
Si Fe Cu Mn Mg Zn Ti Sr Ni Sn In
a 10 0.2 0.2
b 10 0.2 0.3
c 10 0.2 2.0
d 10 0.2 3.0
e 10 0.2 4.0
f 10 0.2 5.0
g 10 0.2 6.0
h 10 0.2 7.0
i 2 0.2 2.0
j 14 0.2 2.0
k 10 0.05 2.0
l 10 0.8 0.5 2.0
m 10 0.2 0.05 2.0
n 7.5 0.2 0.5 2.0
o 10 0.2 0.05 2.0
p 7.5 0.2 2.0 2.0
q 7.5 0.2 0.05 2.0
r 7.5 0.2 1.5 2.0
s 10 0.2 2.0 0.01
t 10 0.2 2.0 0.3
u 10 0.2 0.8 2.0 0.001
v 10 0.2 2.0 0.3
w 10 0.2 2.0 0.05
x 10 0.2 2.0 0.8
y 10 0.2 0.6 2.0 0.001
z 10 0.2 2.0 0.3
aa 10 0.2 2.0 0.001
ab 10 0.2 2.0 0.3
ac 10 0.05 0.2
ad 10 0.2 0.1
ae 10 0.2 1.0
Table 3
Si Fe Cu Mn Mg Zn Ti Cr Sr Zr Ni Sn In
BA 0.8 0.2 1.2 5.0
BB 1.6 0.2 1.5 1.5
BC 0.8 1.6 1.2 1.5
BD 0.8 0.2 0.6 1.2 1.5
BE 0.8 0.2 0.4 1.5
BF 0.8 0.2 2.1 1.5
BG 0.8 0.2 1.2 1.1 1.5
BH 0.8 0.2 0.5 1.5 0.4
BI 0.8 0.2 1.2 1.5 0.4
BJ 0.8 0.2 1.2 1.5 0.4
BK 0.8 0.2 1.2 1.5 1.6
BL 0.8 0.2 1.2 1.5 0.2
BM 0.8 0.2 1.2 1.5 0.2
Table 4
Si Fe Cu Mn Mg Zn Ti Sr Ni Sn In
ba 10 0.2 0.0
bb 10 0.2 0.1
bc 1.9 0.2 2.0
bd 15 0.2 2.0
be 7.5 0.9 2.0
bf 10 0.2 0.6 2.0
bg 10 0.2 2.5 2.0
bh 10 0.2 1.8 2.0
bi 10 0.2 2.0 0.4
bj 10 0.2 1.1 2.0 0.9
bk 10 0.2 2.0 0.4
bl 10 0.2 2.0 0. 4
Table 5
Note：Term " Zn in Zn- core in filler metal " refers to " Zn in Zn content-core in filler metal Content ".
Table 6
Note：Term " Zn in Zn- core in filler metal " refers to " Zn in Zn content-core in filler metal Content ".
Table 7
1) potential difference between core side surface and filler metal side surface after heat run
2) potential difference between core side surface and filler metal side surface after Braze tests
Table 8
1) potential difference between core side surface and filler metal side surface after heat run
2) potential difference between core side surface and filler metal side surface after Braze tests
Table 9
Note：Term " Zn in Zn- core in filler metal " refers to " Zn in Zn content-core in filler metal Content ".
Table 10
Note：Term " Zn in Zn- core in filler metal " refers to " Zn in Zn content-core in filler metal Content ".
Table 11
1) potential difference between core side surface and filler metal side surface after heat run
2) potential difference between core side surface and filler metal side surface after Braze tests
Table 12
1) potential difference between core side surface and filler metal side surface after heat run
2) potential difference between core side surface and filler metal side surface after Braze tests
With regard to sample No.62 and sample No.63, potential difference is less than -40mV, the weight of the fin causing because of corrosion testing Decrement is big, and this is because the Zn content in filler metal is low.
With regard to sample No.64 and sample No.65, filler metal fast erosion, and the fin causing because of corrosion testing Weight decrement big, this be due to the Zn content in the Zn content and core in filler metal between difference be more than 3.0 matter Potential difference between %, and core side surface and filler metal side surface for the amount is more than 40mV.
With regard to sample No.66 and sample No.67, the weight decrement of the fin causing because of corrosion testing is big, this be by Difference between the Zn content in the Zn content and core in filler metal be more than 3.0 mass %, although core side surface with fill out Filling the potential difference between metal side surface is below 40mV.
With regard to sample No.68, the weight decrement of the fin causing because of corrosion testing is big, and this is due to the Zn in core Content is more than 4 mass %.
With regard to sample No.69, fin melts, and this is because the Si content in core is more than 1.5 mass %.
With regard to sample No.70, the weight decrement of the fin causing because of corrosion testing is big, and this is due to the Fe in core Content is more than 1.5 mass %.
With regard to sample No.71, sacrificial anode effect is little, and corrosive pipeline, and this is because the Cu content in core is more than 0.5 mass %.Additionally, the weight decrement of the fin causing because of corrosion testing is big.
With regard to sample No.72, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Mn content in core is too high.
With regard to sample No.73, fusing point reduces, and does not enable sufficient soldering, and this is due to the Mg content in core Too high.
With regard to sample No.74, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Ti content in core is too high.
With regard to sample No.75, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Cr content in core is too high.
With regard to sample No.76, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Zr content in core is too high.
With regard to sample No.77, fin largely corrodes, and the weight of the fin causing because of corrosion testing reduces Amount is big, and this is because the Ni content in core is too high.
With regard to sample No.78, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Sn content in core is too high.
With regard to sample No.79, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the In content in core is too high.
With regard to sample No.80, do not enable sufficient soldering because the Si content in filler metal is too low.
With regard to sample No.81 it is impossible to manufacture intact sheet material, this is because the Si content in filler metal is too high.
With regard to sample No.82, the corrosion certainly of fin increases, and the weight decrement of the fin causing because of corrosion testing Greatly, this is because the Fe content in filler metal is too high.
With regard to sample No.83, the current potential of fin increases, and deep pit corrosion in the duct, this be due to Cu content in filler metal is too high.
With regard to sample No.84, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Mn content in filler metal is too high.
With regard to sample No.85, do not enable sufficient soldering because the Mg content in filler metal is too high.
With regard to sample No.86, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Ti content in filler metal is too high.
With regard to sample No.87, the corrosion certainly of fin increases, and the weight decrement of the fin causing because of corrosion testing Greatly, this is because the Ni content in filler metal is too high.
With regard to sample No.88, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the Sn content in filler metal is too high.
With regard to sample No.89, produce coarse crystallized product during casting, and face crack occurs during rolling (namely that it is impossible to manufacturing intact sheet material), this is because the In content in filler metal is too high.
With regard to sample No.90, do not enable sufficient soldering because sheet thickness is too little.
With regard to sample No.91, fin material remains, and pipeline does not corrode, although corrosion rate is high, this is due to sheet material Thickness is big (that is, the volume of fin material is big).
Description of reference numerals
1 soldering sheet material
2nd, 12 core
3rd, 13 filler metal
4 core sides
5 filler metal sides
11 samples
Core side surface before 14 heat runs
Filler metal side surface before 15 heat runs
Core side surface after 19 heat runs
Filler metal side surface after 20 heat runs
21 fin materials
23 angle weldings
25 slits
26 core side surfaces are located at the ridge in outside
27 filler metal side surfaces are located at the ridge in outside
Core side surface after 29 solderings
Filler metal side surface after 30 solderings

Claims (8)

1. a kind of aluminium alloy soldering sheet material as fin, it includes the core being formed by aluminium alloy, and by include Si and The filler metal that the aluminium alloy of Zn is formed, the only side of described core is coated with described filler metal, Zn in described filler metal Content be 0.2 to 7 quality %,
The thickness of described aluminium alloy soldering sheet material is below 0.15mm, and
Carry out at 600 DEG C between core side surface and the filler metal side surface of the heat run soldering sheet material of 3 minutes Potential difference be -40 to+40mV.
2. aluminium alloy soldering sheet material according to claim 1, the Zn content in wherein said filler metal and described core The difference between Zn content in material is 0.2 to 3.0 quality %.
3. aluminium alloy soldering sheet material according to claim 1 and 2, wherein said core is by including selected from 2.0 mass % Among Si, the Fe below 1.5 mass % below following Mn, 1.5 mass % and the Zn below 4 mass % a kind of element or Two or more elements, surplus is that the aluminium alloy of Al and inevitable impurity is formed, and described filler metal is by including 2 to 14 matter The Zn of Si and 0.2 to 7 quality % of amount %, surplus is that the aluminium alloy of Al and inevitable impurity is formed.
4. aluminium alloy soldering sheet material according to claim 3, wherein said core further includes selected from 0.5 mass % Below Cr below Mg below following Cu, 1.0 mass %, the Zr below 0.3 mass %, 0.3 mass %, 0.3 mass % Ti, the Sr below 0.3 mass %, below the Ni below 1.5 mass %, the Sn below 0.1 mass % and 0.1 mass % In one of element or two or more elements.
5. aluminium alloy soldering sheet material according to claim 3, wherein said filler metal further includes selected from 0.3 matter Mg below In below the Sn of amount below %, 0.3 mass %, the Sr below 0.3 mass %, 1.5 mass %, 0.8 mass % Mn below Ni below following Fe, 0.8 mass %, the Cu below 0.5 mass %, 2.0 mass % and 0.3 mass % with Under Ti one of element or two or more elements.
6. aluminium alloy soldering sheet material according to claim 4, wherein said filler metal further includes selected from 0.3 matter Mg below In below the Sn of amount below %, 0.3 mass %, the Sr below 0.3 mass %, 1.5 mass %, 0.8 mass % Mn below Ni below following Fe, 0.8 mass %, the Cu below 0.5 mass %, 2.0 mass % and 0.3 mass % with Under Ti one of element or two or more elements.
7. a kind of manufacture method of heat exchanger, it is included by least assembling fin material and the tubing being formed by aluminium alloy And the assembly soldering obtaining, described fin material passes through the aluminium alloy soldering lug according to any one of claim 1-6 Material is processed and to be obtained.
8. a kind of heat exchanger, its by means of by by least assembling fin material and the tubing that formed by aluminium alloy and obtain Obtaining, described fin material is formed by the aluminium alloy soldering sheet material including core and filler metal, described core for assembly soldering The only side of material is coated with described filler metal,
Potential difference between the core side surface of the described fin material after soldering and filler metal side surface is -40 to+40mV, With
The described aluminium alloy soldering sheet material forming described fin material is aluminium alloy according to any one of claim 1-6 Soldering sheet material processed.
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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6474589B2 (en) 2014-11-21 2019-02-27 株式会社Uacj Aluminum alloy clad material for heat exchanger
JP6483412B2 (en) * 2014-11-21 2019-03-13 株式会社デンソー Aluminum alloy clad material for heat exchanger
JP6530178B2 (en) * 2014-11-26 2019-06-12 三菱アルミニウム株式会社 Heat exchanger and method of manufacturing heat exchanger
JP6529749B2 (en) * 2014-11-26 2019-06-12 三菱アルミニウム株式会社 Heat exchanger and method of manufacturing heat exchanger
WO2016100640A1 (en) 2014-12-17 2016-06-23 Carrier Corporation Aluminum alloy finned heat exchanger
JP2017082266A (en) * 2015-10-26 2017-05-18 株式会社神戸製鋼所 Surface-treated aluminum alloy, and surface-treated aluminum alloy clad material
JP6463262B2 (en) * 2015-12-28 2019-01-30 株式会社Uacj Aluminum alloy brazing sheet and method for producing aluminum alloy heat exchanger
WO2017122999A1 (en) * 2016-01-11 2017-07-20 성균관대학교산학협력단 Aluminum fin material and filler metal for heat exchanger, and aluminum heat exchanger comprising same
US11346608B2 (en) 2016-01-29 2022-05-31 Deere & Company Heat exchanger with improved plugging resistance
CN106148770A (en) * 2016-08-12 2016-11-23 简顺年 A kind of factory formula of low cost high thermal conductivity aluminium alloy heat radiator
KR101889441B1 (en) * 2017-04-17 2018-08-20 주식회사 코렌스 Aluminium alloy materials having improved corrosion resistance for gas tube of EGR cooler
JP6405020B1 (en) * 2017-07-10 2018-10-17 三菱アルミニウム株式会社 Flux-free brazing method for aluminum material and aluminum alloy member for flux-free brazing
WO2019098157A1 (en) * 2017-11-17 2019-05-23 三菱電機株式会社 Brazed joint body, brazing method, and brazing material
JP7012529B2 (en) * 2017-12-22 2022-01-28 三菱アルミニウム株式会社 Single-sided wax fin material for heat exchangers and heat exchangers and their manufacturing methods
JP7179493B2 (en) * 2018-05-31 2022-11-29 Ｍａアルミニウム株式会社 Fin material for heat exchangers and heat exchangers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1726114A (en) * 2002-12-12 2006-01-25 昭和电工株式会社 Aluminum alloy brazing material, brazing member, brazed article and brazinh method therefor using said material, brazing heat exchanging tube, heat exchanger and manufacturing method thereof using sai
CN101097124A (en) * 2006-06-30 2008-01-02 住友轻金属工业株式会社 Brazing fin material for heat exchangers, heat exchanger, and method of manufacturing same
CN101871062A (en) * 2009-04-21 2010-10-27 株式会社电装 Aluminum alloy clad sheet for heat exchangers

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04325643A (en) * 1991-04-24 1992-11-16 Kobe Steel Ltd Heat exchanger fin material and its production
GB2321869B (en) * 1997-02-10 2001-05-30 Furukawa Electric Co Ltd Aluminum alloy brazing sheet
JPH10280076A (en) * 1997-02-10 1998-10-20 Furukawa Electric Co Ltd:The Aluminum alloy brazing sheet
JP2000202681A (en) * 1999-01-13 2000-07-25 Sumitomo Light Metal Ind Ltd Aluminum alloy fin material for heat exchanger excellent in brazability
JP4431361B2 (en) * 2002-10-30 2010-03-10 昭和電工株式会社 Manufacturing method of heat exchanger
CN101124451A (en) * 2005-02-17 2008-02-13 住友轻金属工业株式会社 Aluminum alloy brazing fin material for heat exchanger
JP5704835B2 (en) * 2009-05-27 2015-04-22 株式会社神戸製鋼所 Aluminum alloy brazing sheet for heat exchanger
JP5400720B2 (en) * 2009-07-14 2014-01-29 株式会社神戸製鋼所 Aluminum alloy brazing sheet
JP5632206B2 (en) * 2010-06-15 2014-11-26 株式会社Uacj Aluminum clad material for heat exchanger
JP2012067385A (en) * 2010-08-23 2012-04-05 Furukawa-Sky Aluminum Corp Brazing sheet and method for producing the same
CN103492174B (en) * 2011-03-16 2016-10-05 美铝公司 Multi-layered brazing sheet material
JP5873343B2 (en) * 2012-01-29 2016-03-01 株式会社デンソー High corrosion resistance aluminum alloy brazing sheet and flow path forming part of automobile heat exchanger using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1726114A (en) * 2002-12-12 2006-01-25 昭和电工株式会社 Aluminum alloy brazing material, brazing member, brazed article and brazinh method therefor using said material, brazing heat exchanging tube, heat exchanger and manufacturing method thereof using sai
CN101097124A (en) * 2006-06-30 2008-01-02 住友轻金属工业株式会社 Brazing fin material for heat exchangers, heat exchanger, and method of manufacturing same
CN101871062A (en) * 2009-04-21 2010-10-27 株式会社电装 Aluminum alloy clad sheet for heat exchangers

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