CN104070304A - Aluminum alloy brazing filler metal and brazing plate - Google Patents
Aluminum alloy brazing filler metal and brazing plate Download PDFInfo
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- CN104070304A CN104070304A CN201410101287.7A CN201410101287A CN104070304A CN 104070304 A CN104070304 A CN 104070304A CN 201410101287 A CN201410101287 A CN 201410101287A CN 104070304 A CN104070304 A CN 104070304A
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- solder
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- brazing
- core
- aluminium alloy
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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
- B23K35/286—Al as the principal constituent
- B23K35/288—Al as the principal constituent with Sn or Zn
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses an aluminum alloy brazing filler metal constituted by Si in a range from 4.0 to 13.0wt%, Sr 0.001 to 0.050wt%, P 0.0001 to 0.0090 wt%, and other aluminum alloy formed by A1 and other inevitable foreign matters and a brazing plate using the same. The aluminum alloy brazing filler metal has advantages of excellent, strength, hard-solder performance, and anti-corrosion performance.
Description
Technical field
The present invention relates to for the aluminium alloy brazing filler metal of solder brazing and the aluminium alloy brazing sheet of use solder.
Background technology
All the time, as the former material of the heat exchanger of automobile etc., what use is to be furnished with at the one or both sides of core the brazing sheet (following, only to have the situation that is called " brazing sheet ") that the aluminium alloy (following, only have the situation that is called " Al alloy ") of solder forms.For example, in each members such as the pipe of the heat exchanger of the intercooler that uses at automobile, radiator, oil cooler, condenser, heating installation core, evaporimeter etc., header plate, side stand, use at least one side of core and be coated with the brazing sheet that is associated the solder that gold forms by Al-Si.These brazing sheets respectively processing and forming become after the shape of regulation, engage each member in solder brazing operation.
As the technology that braze ability is improved, exploitation has several technology.For example, in patent documentation 1, propose to have a kind of structure that makes the grain shape of the core before solder brazing heating realize suitableization.; in patent documentation 1, disclose a kind of technology; it is the rolling direction average length of crystal grain and the ratio of thickness of slab orientation average length before the solder brazing heating by controlling core; while suppressing solder brazing heating, solder is in the crystal grain boundary diffusion of thickness of slab direction; thereby suppress the grain-boundary attack of solder brazing material, the technology that braze ability is improved.
In addition, in patent documentation 2, disclose a kind of technology, the wherein Ca in solder by restriction, thus suppress the generation of fine and close oxide, to realize the raising of wetability and autgmentability of solder.In addition, in patent documentation 2, also disclose the melting point depression that makes scolder by adding Bi, to improve the wetability of scolder and the technology of mobility.
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 10-53827 communique
Patent documentation 2: TOHKEMY 2000-202682 communique
For miniaturization, the lightweight of heat exchanger, realize the such requirement of further thin-walled property for tubing, header sheet material etc., think and need to maintain the braze ability same with existing thickness of slab with solder thickness still less.But about the raising of the mobility of solder self, existing technology is not studied fully, can not be tackled.
Summary of the invention
The present invention forms in view of described problem, and this problem is, a kind of solder is provided, and it improves by the mobility that makes solder self, thereby has excellent braze ability under solder thickness still less.Also provide in addition a kind of by described solder and the core with specific composition are combined, the aluminium alloy brazing sheet of intensity, braze ability, excellent corrosion resistance.
For such problem, the present inventors are for the various elements that form solder, also including micro-composition, while more carefully research, find, the specific micro constitutent that Sr outside expection and P are such contributes to the mobility of solder self to improve, thereby has reached the present invention very much.
That is, solder of the present invention, is characterized in that, is made up of following aluminium alloy, and it contains Si:4.0～13.0 quality %, Sr:0.001～0.050 quality %, P:0.0001～0.0090 quality %, and surplus is made up of Al and inevitable impurity.
By using described solder, distinguish and can make the mobility of solder self improve, can obtain the effect that braze ability further improves.
In addition, form the aluminium alloy of described solder, it is characterized in that, also contain Zn:1.5～10.0 quality %.By becoming such composition, except the mobility of solder self, can also make this one side side with solder also have both corrosion resistance.
In addition, described solder is by being coated on one or both sides of core etc. and using as aluminium alloy brazing sheet, it is characterized in that, and as core, formed by following aluminium alloy, it contains Si:0.1～1.0 quality %, Cu:0.5～1.2 quality %, Mn:0.5～2.0 quality %, more than also containing any one among Ti:0.05～0.25 quality %, Cr:0.01～0.25 quality %, Mg:0.05～0.50 quality %, surplus by Al and inevitably impurity form.
By becoming the aluminium alloy brazing sheet of such formation, the characteristic of solder and the characteristic of core interact, and can make intensity and braze ability and corrosion resistance improve.
Solder of the present invention, mobility excellence, can, with solder thickness still less, realize the raising of excellent braze ability.In addition, also contain in the invention of Zn at the alloy that forms solder, except the raising of excellent braze ability, can also have both corrosion resistance.In addition, as the core that is fitted with solder, there is by use the core that the aluminium alloy of specific composition forms, can obtain the aluminium alloy brazing sheet of intensity, braze ability, excellent corrosion resistance.
Detailed description of the invention
Below, explain the mode for implementing solder of the present invention and aluminium alloy brazing sheet.First, describe for the aluminium alloy that forms solder of the present invention.
(solder)
Solder of the present invention is made up of following aluminium alloy, and it contains Si:4.0～13.0 quality %, Sr:0.001～0.050 quality %, P:0.0001～0.0090 quality %, and surplus is made up of Al and inevitable impurity.
Below, describe for each Constitution Elements of the aluminium alloy that forms solder of the present invention.
(Si:4.0～13.0 quality %)
Si reduces the solidus temperature of aluminium alloy, has the effect that improves the mobility at solder brazing temperature.Si is during lower than 4.0 quality %, the absolute magnitude deficiency of the solder liquid phase at 580～630 DEG C of solder brazing temperature when solder brazing.For example, while carrying out solder brazing with 600 DEG C, can not guarantee the sufficient leg filling of the scolder (, solidify portion) volume, braze ability is insufficient.On the other hand, if Si exceedes 13.0 quality %,, in the process of setting in the time of the casting of solder, the thick primary crystal of Si easily occurs, and the thick Si primary crystal that size exceedes 100 μ m left and right can occur.If exceed the thick Si crystallization of 100 μ m in the time of the casting of solder, in the time of the shaping of pipe, can there is the crackle taking these thick Si crystal grain as starting point, the shaping difficulty of pipe.Therefore, the content of Si is 4.0～13.0 quality %.The preferred scope of the content of Si is 4.1～12.5 quality %.
(Sr:0.001～0.050 quality %, P:0.0001～0.0090 quality %)
In the present invention, by micro-Sr and P are coexisted, the effect that the known mobility having while making solder melting improves.Although its mechanism is also not clear and definite, current think due to, have a little some Sr and P to coexist, there is the effect that the surface tension of melting Al is further reduced.Think due to, coexist by Sr and P, the Al-Si liquid phase can make solder melting start time, Al solid phase, Si solid phase coexist and flow time flow coefficient reduce.
If Sr lower than 0.001 quality %, can not fully obtain the mobility raising effect that above-mentioned effect is brought.On the other hand, if Sr exceedes 0.050 quality %, the viscosity of the liquid phase of Al-Si brazing filler metal self increases, and therefore braze ability reduces.Therefore, the content of Sr is 0.001～0.050 quality %.The preferred scope of the content of Sr is 0.002～0.040 quality %.
In addition, if P lower than 0.0001 quality %, can not fully obtain the mobility raising effect that above-mentioned effect is brought.On the other hand, if P exceedes 0.0090 quality %, generate Al-P compound, while therefore manufacturing the coated material of solder by hot rolling, edge crack more than 100mm can occur in side, therefore can not effectively manufacture the coated material of solder.Therefore, the content of P is 0.0001～0.0090 quality %.The preferred scope of the content of P is 0.0001～0.0070 quality %.
(surplus: Al and inevitably impurity)
Solder of the present invention is that the aluminium alloy that Al and inevitable impurity form forms by surplus.As inevitable impurity, think have Fe, Cu, Mn etc.Inevitably impurity is not if can, to the exert an influence content of this degree of effect of the present invention, allow to contain.For example, if Fe preferably below 0.3 quality %, if Cu is preferably below 0.3 quality %, if Mn is preferably below 0.3 quality %.But inevitably the total of the content of impurity is preferably controlled at and is no more than 0.6 quality %.
(Zn:1.5～10.0 quality %)
While making the corrosion resistance raising of the aluminium alloy that forms solder of the present invention, also preferably contain Zn:1.5～10.0 quality %.By adding Zn, make the current potential of solder side low in electrochemistry, can make corrosion resistance improve.Zn is during lower than 1.5 quality %, and the effect of electronegative potential is little, and it is little that corrosion resistance improves effect.On the other hand, if Zn exceedes 10.0 quality %, the solidus temperature of Al-Si-Zn solder becomes too low, is therefore not suitable as solder.Therefore, Zn is contained sometimes, the content of Zn is 1.5～10.0 quality %.The preferred scope of the content of Zn is 1.8～9.5 quality %.
Aluminium alloy brazing sheet of the present invention, can manufacture: use the coated method waiting, make to have layer that solder above-mentioned specific composition, mobility excellence forms and be engaged in the one or both sides of core described later in the following way.
Next, just describe for the core of aluminium alloy brazing sheet of the present invention.
(core)
In the present invention, by using the solder forming by thering is the above-mentioned specific aluminium alloy forming, and use by have core that the specific aluminium alloy forming forms as with the core of solder laminating, can obtain the aluminium alloy brazing sheet of intensity, braze ability, excellent corrosion resistance.
Below, describe for each Constitution Elements of the aluminium alloy that forms core of the present invention.
(Si:0.1～1.0 quality %)
Si has solid solution and effect that tensile strength is improved, can make alloy strength after solder brazing improve.During lower than 0.1 quality %, above-mentioned effect is insufficient, and on the other hand, if exceed 1.0 quality %, the solidus temperature of core reduces, therefore likely melting in the time of solder brazing of core.Therefore, the content of Si is 0.1～1.0 quality %.The preferred scope of the content of Si is 0.12～0.98 quality %.(Cu:0.5～1.2 quality %)
Cu is same with Si, has solid solution and effect that tensile strength is improved, can make alloy strength after solder brazing improve.During lower than 0.5 quality %, insufficient from the solution strengthening of Cu, the raising effect of tensile strength is insufficient.On the other hand, if exceed 1.2 quality %, after solder brazing heating, Al-Cu is the amount increase of precipitate, and corrosion resistance reduces.Therefore, the content of Cu is 0.5～1.2 quality %.The preferred scope of the content of Cu is 0.52～1.15 quality %.
(Mn:0.5～2.0 quality %)
Due to Mn formation and the dispersed particle of Si, therefore disperse to be reinforced, there is the effect of the tensile strength raising of the aluminium alloy after the solder brazing of making.During lower than 0.5 quality %, the raising effect of the dispersion-strengthened tensile strength of bringing is insufficient.On the other hand, if exceed 2.0 quality %, in the time of casting, easily form the intermetallic compound of thick Al-Mn system, processability reduces, and therefore crackle easily occurs in the time that pipe is shaped.Therefore, the content of Mn is 0.5～2.0 quality %.The preferred scope of the content of Mn is 0.52～1.90 quality %.
(Ti:0.05～0.25 quality %)
Ti forms Ti-Al based compound and stratiform dispersion in Al alloy.Due to Ti layered distribution, cause the distribution of the current potential of material also to become and the deep or light corresponding distribution of Ti, therefore can make etch state laminarization, Speed Reduction is carried out in the corrosion of thickness of slab direction, has the effect that the corrosion resistance after the solder brazing of making improves.During lower than 0.05 quality %, the degree of the layered distribution of Ti is insufficient, and corrosion resistance is insufficient.On the other hand, if exceed 0.25 quality %, easily form thick Al3Ti series intermetallic compound while casting, processability reduces, and therefore crackle easily occurs in the time that pipe is shaped.Therefore, the content of Ti is 0.05～0.25 quality %.The preferred scope of the content of Ti is 0.06～0.24 quality %.
(Cr:0.01～0.25 quality %)
By adding Cr, cause the fine precipitated phase of Al3Cr dispersed particle to distribute, thereby there is the effect that the tensile strength after the solder brazing of making improves.During lower than 0.01 quality %, above-mentioned effect is insufficient.On the other hand, if exceed 0.25 quality %, easy Al3Cr intermetallic compound thick in the time of casting, processability reduces, therefore the easy crackle that occurs in the time that pipe is shaped.Therefore, the content of Cr is 0.01～0.25 quality %.The preferred scope of the content of Cr is 0.02～0.20 quality %.
(Mg:0.05～0.50 quality %)
When Mg and Si coexist, the precipitated phase of formation Mg2Si etc., improves the tensile strength of the aluminium alloy after solder brazing.During lower than 0.05 quality %, this effect is little.On the other hand, if exceed 0.50 quality %, solder flux and Mg easily form the compound of MgF2 etc. when solder brazing, and solder flux effect is insufficient, and braze ability significantly reduces.Therefore, the content of Mg is 0.05～0.50 quality %.The preferred scope of content of Mg is 0.06～0.48 quality %.
More than need to containing any one among above-mentioned Ti:0.05～0.25 quality %, Cr:0.01～0.25 quality %, Mg:0.05～0.50 quality %.As the element of aluminium alloy that forms core, compared with Si, Cu, Mn, Ti, Cr, its necessity of Mg are slightly low, but according to above-mentioned feature, effect, purposes, can make it to contain aptly ormal weight.
(surplus: Al and inevitably impurity)
Core of the present invention is that the aluminium alloy that Al and inevitable impurity form forms by surplus.As inevitable impurity, think have Fe, Sn, Ni, Zr, C etc.Inevitably impurity is if the content of the degree effect of the present invention not being impacted allows to contain.For example,, if Fe is preferably below 0.3 quality %.In addition, inevitably the total of the content of impurity, is preferably controlled in the mode that is no more than 0.6 quality %.
(thickness of solder)
In brazing sheet of the present invention, the solder thickness of preferred every one side is 10～100 μ m.The thickness of solder is during lower than 10 μ m, the absolute magnitude deficiency of scolder, and braze ability likely reduces.On the other hand, if the thickness of solder exceedes 100 μ m, the amount of flow surplus of scolder, a part corrodes core, and the corrode (エ ロ ー ジ ョ Application) of core likely occurs.Preferred solder thickness is 10～50 μ m.Further, if two sides is while all possessing the aluminium alloy brazing sheet of solder, the solder of each face can be the aluminium alloy of identical component, can be also different.
(sacrificial anode material)
In brazing sheet of the present invention, also can on the face of a side of described core, possess described solder, coated sacrificial anode material on another side, makes to improve from the corrosion resistance of another side side.For the tubing of heat exchanger, when the such purposes of collector material, the object improving for the corrosion resistance that realizes cooling water side or exterior side, can make solder brazing junction structure with the brazing sheet that possesses such sacrificial anode material.In this case, become the mode formation of parts of corrosive environment side so that possess the face of sacrificial anode material.
As sacrificial anode material, for example, Al-Zn system, Al-Zn-Mg system, the Al-Si-Mn-Zn that also can be coated 7072 grades are associated golden sacrifice preserving timber.
(brazing sheet)
Aluminium alloy brazing sheet of the present invention, is manufactured by the manufacture method of known coated material.One example is below described.
First, by continuous casting melt, cast aluminium alloy for core, aluminium alloy, solder layer aluminium alloy for sacrificial anode layer, then as required again by continuous casting melt, casting sacrificial anode layer side solder layer aluminium alloy, and carry out as required building up by welding, the heat treatment that homogenizes, obtain ingot casting for core, ingot casting, solder layer ingot casting and sacrificial anode layer side solder layer ingot casting for sacrificial anode layer.For sacrificial anode layer, ingot casting, solder layer ingot casting and sacrificial anode layer side solder layer ingot casting, become respectively specific thickness by hot rolling or cut-out, obtains sacrificial anode material, solder and sacrificial anode layer side solder.
Then, clamp core ingot casting with solder and sacrificial anode material, more as required sacrificial anode layer side solder is configured in to the outside of sacrificial anode material, make it to overlap, after 400 DEG C of above temperature heating, by hot rolling crimping, become sheet material.Thereafter, by cold rolling, intermediate annealing, the cold rolling thickness of slab that reaches regulation.
Solder of the present invention and used its brazing sheet, for example, can be widely used in each purposes of pipe, header plate, side stand of the heat exchanger of intercooler that automobile uses, radiator, oil cooler, condenser, heating installation core, evaporimeter etc. etc.
In order to use in such purposes, generally need to use the brazing sheet with solder, be processed into solder brazing junction structure.
As the manufacture method of solder brazing junction structure, one example is below described.For example, if be equipped on the heat exchanger of condenser of automobile etc., general use brazing sheet of the present invention, by form fluid passage partially flat tubulose pipe and carried out the overlapping combination of fin alternate repetition of corrugation for sheet material, so that the mode that fluid passage is assembled, make to manage chimeric having carried out stamping tube plate (collector) for sheet material, become the tectosome of assembling.
Under the state of these assembling parts, heat by solder brazing, pipe is engaged respectively with tube plate with fin, pipe, manufacture heat exchanger.The connecting portion that the solder (fusion welding) of melting is filled between part due to solder brazing heating forms solder pot (leg), and the part that forms structure is engaged with each other.
At least in any one of these pipes, tube plate and fin, can be suitable at the face of at least one side of the core being made up of aluminium alloy of the present invention the brazing sheet that is coated with solder.
Embodiment
Next, illustrate in greater detail the present invention based on embodiment.
The making > of < test material No.1～95
By general method, make the solder (test material No.1～29, solder flag F 1～F29) with the chemical composition shown in table 1.Casting has the ingot casting of the core (test material No.30～48, core mark C1～C19) of the chemical composition shown in table 2, implements to homogenize after processing, and building up by welding becomes the thickness of slab of regulation and makes core.Core and solder for these making carry out various combinations, make it to overlap, carry out after crimping rolling for the two-layer coated material of solder/core by hot rolling, carry out cold rolling, intermediate annealing, finish to gauge, be made into brazing sheet as the coated material of the thickness of slab of 0.25mmt for examination material (test material No.49～95, coated material mark B1～B47)).As the thickness of solder, make 30 μ m, two kinds of 10 μ m.
Then, for obtained each brazing sheet, for examination material, with regard to the corrosion resistance of the intensity after flow coefficient, braze ability, solder brazing, solder side, other performance, the method for below showing is evaluated, and its result is presented in table 3 and table 4.Further, in chemical composition one hurdle of table 1 and table 2, the numeric representation of underscore departs from the number range of the 1st invention the～the 3 invention defined.Describe in addition the hurdle for "-", represent that composition is the content of inevitable impurity level.In chemical composition one hurdle of table 1 and table 2, surplus is Al and inevitable impurity.
In addition, in a hurdle of the intensity after the flow coefficient of the evaluation result of table 4, braze ability, solder brazing, the corrosion resistance of solder side, describe the hurdle for "-", represent, as the manufacture difficulty of coated material, therefore can not measure.In addition, in other hurdles of the evaluation result of table 3 and table 4, describe the hurdle for "-", be illustrated in the performance of formability beyond the corrosion resistance of intensity after flow coefficient, braze ability, solder brazing, solder side etc., there is no special problem.
(flow coefficient)
Test method foundation " aluminium soldering handbook (revised edition) " light metal welding structure association of civic organization, p131, the shatter test method that Fig. 4 .11 describes is carried out.For have a try material for 50mm wide × 100mmL × 0.25mmt.Evaluation method is gravimetric method.Under blanket of nitrogen, keep 5 minutes at 600 DEG C, carry out common solder brazing.
Flow coefficient K3, with K3=(4WB-WO)/(3WO × cladding ratio of filler metals) calculating.At this, WO: the quality of the brazing sheet before solder brazing, WB: the quality of the brazing sheet bottom 1/4 after solder brazing, cladding ratio of filler metals: with respect to the ratio of the solder thickness of brazing sheet gross thickness.
As the metewand of flow coefficient K3, when K3:0.5 is above, be ◎, K3: be zero, K3 when above lower than 0.5,0.35: lower than within 0.35 o'clock, being ×.
(braze ability)
Test method foundation " aluminium soldering handbook (revised edition) " light metal welding structure association of civic organization, p133, Fig. 4 .13 (1), (2), (3) described gap-fill test method(s) carry out.For the material of having a try be lower plate: 25mmW × 60mmL × 0.25mmt, upper plate: 25mmW × 55mmL × 1.0mmt.As lower plate, place the test material of embodiment, comparative example taking upper surface as the mode of solder side.Use the O state material of aluminium 3003 alloys of 1mmt as upper plate.Pad uses 2 φ SUS.At the solder face side coating solder flux 5g/m2 of lower plate.Under blanket of nitrogen, with 600 DEG C of maintenances 5 minutes, carry out common solder brazing.
As the evaluation of braze ability, measurement clearance is filled length FL.As the metewand of gap-fill length FL, when FL:30mm is above, be ◎, FL: be zero, FL when above lower than 30mm and 25mm: during lower than 25mm, be ×.
(intensity after solder brazing)
Solder brazing heating means: use each test material of 200mmL × 150mmW × 0.25mmt size, carry out shatter test with following solder brazing condition, after solder brazing heating, at room temperature keep, after 1 week, carrying out tension test.Under blanket of nitrogen, with 600 DEG C of maintenances 5 minutes, carry out common solder brazing.As evaluating the test film with test film use JIS5.
As the metewand of intensity, tensile strength is ◎ ◎ in the time that 180MPa is above, is ◎ lower than 180MPa, in the time that 160MPa is above, is zero lower than 160MPa, in the time that 150MPa is above, during lower than 150MPa, be ×.
(solder side corrosion resistance)
Solder brazing heating means: the each test material that uses 200mmL × 150mmW × 0.25mmt size, carry out shatter test by following solder brazing condition, after solder brazing heating, at room temperature keep after 1 week, under the blanket of nitrogen for the evaluation test of solder side corrosion resistance, with 600 DEG C of maintenances 5 minutes, carry out common solder brazing.As solder side corrosion resistance evaluation test method, taking solder side as test face, the face of a sealing side contrary to solder, according to SWAAT ASTM G85-A3, carries out 340h test.Follow conventional method and remove test post-etching product, evaluate corrosion depth by depth of focus method.
As the metewand of solder side corrosion resistance, corrosion depth: when 30 μ m are following, be ◎, corrosion depth exceedes 30 μ m, during lower than 70 μ m be zero, 70 μ m when above be ×.
[table 1]
[table 2]
As shown in table 1, meet the solder of regulation of the 1st invention of the present invention, with solder flag F 1～F16(test material No.1～16) represent.Meet the solder of the regulation of the 2nd invention of the present invention, with solder flag F 17～F22(test material No.17～22) represent.The solder of the regulation of discontented foot the 1st invention of the present invention, with solder flag F 23～F28(test material No.23～28) represent.The solder of the regulation of discontented foot the 2nd invention of the present invention, with solder flag F 29(test material No.29) represent.
As shown in table 2, meet the core of regulation of the 3rd invention of the present invention, test material No.30～42 with core mark C1～C13() represent.The core of the regulation of discontented foot the 3rd invention of the present invention, tests material No.43～48 with core mark C14～C19() represent.
As shown in table 3, meet the 1st invention of the present invention or the 2nd invention regulation solder and meet test material No.49～82(brazing sheet B1～B34 of the brazing sheet that the combination of core of the regulation of the 3rd invention forms), in intensity after flow coefficient, braze ability, solder brazing, the corrosion resistance of solder side, other performance, all there is excellent performance.
Brazing sheet B35～the B41 of test material No.83～89 of table 4, use the solder of the regulation of the 1st invention of the present invention of the discontented foot of solder or the 2nd invention, poor performance more than intensity after flow coefficient, braze ability, solder brazing, the corrosion resistance of solder side, other any one of performance.
Brazing sheet B42～the B47 of the test material 90～95 of table 4, has used poor performance more than corrosion resistance, other any one of performance of intensity after the core, flow coefficient, braze ability, solder brazing of the regulation of the discontented foot of core the 3rd invention of the present invention, solder side.
Particularly test material No.86,89,91, the edge crack of solder is large, or the reduction of the solidus temperature of solder and core, the manufacture difficulty of coated material.In addition, test material No.88, the thick Si crystallization that exceedes 100 μ m when the casting of solder generates, and the crackle taking these thick Si crystal grain as starting point in the time of the shaping of pipe occurs, the shaping difficulty of pipe.Test material No.95, the thick compound of Al-Mn becomes the starting point of crackle, and crackle occurs in the time of the shaping of pipe, and difficulty is shaped.
Above, preferred embodiment be illustrated for of the present invention, but the present invention is not limited by described embodiment, also can be can significantly change, change enforcement in the scope of aim according to the invention, these are all included in the scope of technology of the present invention.
The interests of priority are advocated in the Japan patent application of the application based on applying on March 28th, 2013 for No. 2013-70652.The full content of above-mentioned description, quotes for reference in this application.
Claims (3)
1. a solder, is characterized in that, is made up of following alloy, and it contains Si:4.0～13.0 quality %, Sr:0.001～0.050 quality %, P:0.0001～0.0090 quality %, and surplus is made up of Al and inevitable impurity.
2. solder according to claim 1, is characterized in that, described alloy also contains Zn:1.5～10.0 quality %.
3. an aluminium alloy brazing sheet, it is characterized in that, it is the aluminium alloy brazing sheet on the one or both sides of core with claim 1 or solder claimed in claim 2, wherein, core is made up of following aluminium alloy, contain Si:0.1～1.0 quality %, Cu:0.5～1.2 quality %, Mn:0.5～2.0 quality %, more than also containing any one among Ti:0.05～0.25 quality %, Cr:0.01～0.25 quality %, Mg:0.05～0.50 quality %, surplus by Al and inevitably impurity form.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013070652A JP5973948B2 (en) | 2013-03-28 | 2013-03-28 | Aluminum alloy brazing material and brazing sheet |
| JP2013-070652 | 2013-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104070304A true CN104070304A (en) | 2014-10-01 |
| CN104070304B CN104070304B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410101287.7A Expired - Fee Related CN104070304B (en) | 2013-03-28 | 2014-03-18 | Aluminium alloy brazing filler metal and brazing filler metal plate |
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| Country | Link |
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| JP (1) | JP5973948B2 (en) |
| CN (1) | CN104070304B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624437A (en) * | 2016-11-30 | 2017-05-10 | 安徽华众焊业有限公司 | Corrosion-resistant aluminum alloy solder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505043B (en) * | 2020-06-08 | 2023-07-28 | 西南铝业（集团）有限责任公司 | Brazing performance evaluation method and experimental support frame for brazing aluminum alloy |
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| US4785092A (en) * | 1984-05-25 | 1988-11-15 | Sumitomo Light Metal Industrial, Ltd. | Aluminum brazing material for use in aluminum heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624437A (en) * | 2016-11-30 | 2017-05-10 | 安徽华众焊业有限公司 | Corrosion-resistant aluminum alloy solder |
| CN106624437B (en) * | 2016-11-30 | 2018-10-30 | 安徽华众焊业有限公司 | Anticorrosion aluminium solder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104070304B (en) | 2016-06-01 |
| JP5973948B2 (en) | 2016-08-23 |
| JP2014194051A (en) | 2014-10-09 |
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