CN106626601A - High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material - Google Patents
High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material Download PDFInfo
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- CN106626601A CN106626601A CN201611024530.5A CN201611024530A CN106626601A CN 106626601 A CN106626601 A CN 106626601A CN 201611024530 A CN201611024530 A CN 201611024530A CN 106626601 A CN106626601 A CN 106626601A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- 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
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Abstract
The invention relates to a high-strength aluminum alloy composite plate for gas-carrying soldering and a cladding material. The cladding material is an aluminum alloy which contains the following components in percentage by mass: 0.8-1.2% of Zn, 0.3-0.6% of Mg, 0.1-0.6% of Mn and 0.1-0.7% of Fe. A core material of the composite plate made of the cladding material is AA3003, and the cladding material is composited on one side of the core material. According to the high-strength aluminum alloy composite plate for the gas-carrying soldering and the cladding material disclosed by the invention, on the premises that the requirements for the corrosion properties of the material are met, and the welding effect of the gas-carrying soldering is not influenced, the strength of the composite plate alloy is improved.
Description
Technical field
The invention mainly relates to a kind of aluminium alloy plate, more particularly to a kind of carrier gas soldering with high-strength aluminum alloy composite plate and
Clad material.
Background technology
Aluminium alloy has a rich reserves, high specific strength, the excellent properties such as heat transfer coefficient is high and easy to process, used as Heat transmission
Material is widely used in heat exchanger field.For " energy-saving and emission-reduction " strategy of response country, heat exchanger light-weighted demand day
Tend to become strong strong, developing lighter and thinner heat exchanger becomes a kind of trend, how to realize that material is thinning on the premise of proof strength
It is the emphasis studied at this stage.
Wherein 3xxx systems Al-Mn alloys are again because its punching performance is good, and yield ratio is low, and plasticity index is big, thick anisotropy index
It is low, usually as the core of aluminium heat exchanger.
To undergo cold cycling repeatedly and periodic vibration during heat exchanger use, still suffer from from extraneous ring
Border (rainwater, sand grains, mud etc.) and the pollution of waste gas discharged by vehicles, therefore it is required that it possesses good corrosive nature.
According to the actual service condition of heat exchanger component, the corrosion resistance of heat exchanger, be divided into internal corrosion performance with it is outer
Two aspects of portion's corrosive nature.Water side corrosion is also referred to as touched in internal corrosion, heat exchanger when in use, pipe or plate side can with water or
Coolant is contacted, and some metal ions or the entrance of other impurity are unavoidably had in the coolant for using, once occur rotten
Eating thrown hole will cause coolant to be revealed, and heat exchanger will be made to fail, therefore propose very high requirement to its corrosivity.In order to
Internal corrosion is more efficiently prevented from, at present generally tube sheet inner side is combined one layer of alloy conduct more relatively low than core alloy corrosion potential
Sacrificial anode layer is protecting the core as negative electrode.Internal corrosion protection Design the most frequently used now is cladding Al-1%Zn layers,
It is general to use 7072 aluminium alloys containing 1%Zn.
But at present, in order to prevent internal heat exchanger from corroding and in the relatively low protection of the corrosion potential for touching the addition of water side
Layer, typically only considers its corrosive nature, but intensity is relatively low, and the bulk strength contribution to material is little, and in heat exchanger light weight
Under the demand of change, it is desirable to which touching water side cladding material can also be to being integrated with certain intensity contribution in addition to corrosive nature；In addition heat is handed over
Parallel operation still suffers from the course of the work washing away from coolant, equally proposes certain requirement to its intensity.
Mg is added in clad material not only can improve intensity, can also improve corrosion-resistant and corrosion-resistant property.
However, when heat exchanger carries out carrier gas soldering (CAB), to abolish oxide-film, increasing interfacial activity, one layer can be coated
Brazing flux, and the Mg added to improve intensity and corrosive nature can diffuse to aluminum alloy surface in brazing process and form MgO, should
Solubility of the MgO in brazing flux is extremely low, not readily dissolves, therefore can substantially reduce the mobility of solder.
Additionally, Mg also raises easily brazing flux fusing point and loses activity with brazing flux reaction.Therefore, the parts containing Mg are general not
It is adapted to be attached using carrier gas brazing mode, and adopts vacuum brazing (VB) mode.Although but vacuum brazing can be obtained
High-quality device, but its production process must heat up soldering in (3.5 × 10-3Pa) closed body of heater of nearly vacuum state,
Production efficiency is extremely low.And carrier gas soldering then can realize continuous production under inert gas shielding, production efficiency is high, and soldering
Defective products can carry out secondary soldering, and high yield rate is up to 99%.Therefore exploitation can be used for carrier gas soldering containing proper content Mg
Aluminum alloy materials become new research direction.
For the problems referred to above, it is necessary to develop a kind of carrier gas soldering (CAB) of tactile water side containing Mg and use Al alloy composite,
On the premise of ensureing material corrosion performance and not affecting carrier gas Welding effect, improve alloy strength.
The content of the invention
For the problems referred to above, the present invention is intended to provide a kind of carrier gas soldering high-strength aluminum alloy composite plate and coating material
Material, on the premise of ensureing material corrosion performance and not affecting carrier gas Welding effect, improves clad material and aluminium alloy is multiple
The intensity of plywood.
The invention provides a kind of clad material of carrier gas soldering with high-strength aluminum alloy composite plate, the clad material is
The aluminium of the Fe of Mn, 0.1-0.7% mass of Mg, 0.1-0.6% mass of Zn, 0.3-0.6% mass containing 0.8-1.2% mass
Alloy.
Further, the clad material can be containing the Si of 0.1-0.6% mass.
Further, in the clad material Cu mass content≤0.2%.
Further, in the clad material Ti mass content≤0.05%.
Further, in the clad material Cr mass content≤0.05%.
Preferably, in described clad material, the mass content of Zn is 0.9-1.1%, and the mass content of Mg is 0.3-
The mass content of 0.45%, Mn is 0.3-0.5%, and the mass content of Fe is 0.3-0.6%.
Preferably, in described clad material, the mass content of Si is 0.2%-0.5%.
The present invention also provides a kind of composite plate being prepared into using above-mentioned clad material, and the core of the composite plate is
AA3003, the side of the core is compounded with the clad material.
Above-mentioned composite plate, the opposite side of the core is compounded with four line aluminium alloys.
Above-mentioned composite plate, can also be compounded with four line aluminium alloys on the outer surface of the clad material.
The addition of the element such as appropriate Mg, improves the decay resistance of alloy in the present invention, while having close with 7072
Corrosion potential, with core AA3003 with the use of the cathodic protection there is provided sacrificial anode, thus improve heat exchanger aluminium
Alloy composite plate touches the internal corrosion performance of water side, extends the service life of heat exchanger.
Additionally, on the premise of the tactile water side alloy of guarantee has relatively low corrosion potential, provides cathodic protection for core, leading to
The elements such as addition Mn, Si, Mg are crossed, can be mutually strong with second by solution strengthening in alloy hot-working, heat treatment and brazing process
Change mode produces optimal invigoration effect, improves and touches the intensity and flushing resistance of water side alloy, and then improves composite
Bulk strength so that it is (conventional to want containing the three-layer composite board postwelding yield strength for touching water side that its postwelding yield strength is not less than 60MPa
Seek >=45MPa).
Furthermore, the aluminium alloy compound plate that the present invention is provided can be used for carrier gas soldering (CAB), so as to be greatly improved soldering effect
Rate and soldering parts yield rate.Content (＜ 0.6%) due to strictly controlling Mg elements in alloy, it is not necessary to use vacuum
The mode of soldering is welded, using the New type soldering flux for matching, it is possible to avoid unfavorable shadows of the Mg in carrier gas brazing process
Ring, while preventing the generation of brazing flux saturation.Therefore the composite board is adapted to adopt CAB solderings, be capable of achieving the material with other zero
The carrier gas soldering production of part, has the advantages that production efficiency height and high yield rate.
In a word, using technical solutions according to the invention, by the adjustment to touching water side alloying component, ensureing that material is rotten
Corrosion energy and on the premise of not affecting carrier gas Welding effect, improves the intensity of clad material and aluminium alloy compound plate.
Description of the drawings
Fig. 1 is the structural representation of the three-decker aluminium alloy compound plate of the embodiment of the present invention；
Fig. 2 is the structural representation of the four-layer structure aluminium alloy compound plate of the embodiment of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in more details, so as to energy
Enough more fully understand the advantage of the solution of the present invention and various aspects.However, specific embodiments described below and enforcement
Example is only descriptive purpose, rather than limitation of the present invention.
The invention provides a kind of carrier gas soldering (CAB) of tactile water side containing Mg Al alloy composite and clad material,
Ensureing material corrosion performance and on the premise of not affecting carrier gas Welding effect, mainly by touching water side (i.e. coating
Material) alloying component adjustment, carry out improve alloy strength.
The element content range that water side alloy is touched in the present invention is as follows：The Zn of 0.8-1.2% mass, 0.3-0.6% mass
Mg, the Mn of 0.1-0.6% mass, the Si of 0.1-0.6% mass, the Cu of≤0.2% mass, the Fe of 0.1-0.7% mass ,≤
The Ti of 0.05% mass, the Cr of≤0.05% mass, remaining is Al and the inevitable impurity less than 0.15%.
Main adding elements are described as follows：
The mass content of 1.Zn is (0.8-1.2%)
Zn is one of primary alloy constituent of tactile water side alloy, can reduce touching the corrosion potential of water side alloy, is that core is carried
For cathodic protection.If but Zn contents are too high, coating fusing point can be reduced, potentially make the material more fragile, in process easily
Generation is peeled off and departed from, and Zn contents too low (being less than 0.8%) are difficult to match with the corrosion potential of core, and the addition of Zn is 0.8-
1.2%, preferably 0.9-1.1%.
The mass content of 2.Mg is (0.3-0.6%)
Mg be mainly in the way of solution strengthening improve alloy strength, while can with Si coordinate addition form Mg2Si
Ageing strengthening phase, the addition of Mg can also improve corrosive nature.The addition of Mg be 0.3-0.6%, preferably 0.3-0.45%,
More than 0.6%, then CAB solderings effect it cannot be guaranteed that, less than 0.3%, reinforcing effect it is inadequate.
The mass content of 3.Mn is (0.1-0.6%)
Mn can put forward heavy alloyed intensity by second-phase strength and solution strengthening.The addition of Mn is 0.1-0.6%, most
It is well 0.3-0.5%.More than 0.6%, raise can alloy current potential (often increases by 0.1 (wt.%) Mn, alloy current potential is raised
5.4mv), it is unfavorable for touching the performance of water side alloy antiseptic property；Less than 0.1%, then strengthen not sufficiently effective.
4th, the mass content of Fe is (0.1-0.7%)
Fe can form submicron order Al-Mn-Fe-Si phases with Mn, Si, improve intensity.When Fe contents are less than 0.1%,
Manufacturing cost rises；During higher than 0.7%, then thick Al-Fe-Mn-Si primary phases can be formed, cause processing characteristics to deteriorate.Most
Excellent scope is 0.3-0.6%.
Thus after the content of Zn, Mg, Mn, Fe meets above-mentioned requirements, so that it may the purpose of the present invention is realized, that is, is ensureing material
Material corrosive nature and on the premise of not affecting carrier gas Welding effect, improves the intensity of clad material and composite plate alloy.Under
The restriction for stating other elements realizes that more excellent technique effect can be played to the purpose of the present invention.
5th, the mass content of Si is (0.1-0.6%)
Si can form the Al-Mn-Si disperse phases of submicron order, improve alloy strength with Mn.The content of Si is less than 0.1%,
Then the effect above is not enough；Higher than 0.6%, then can cause the fusing point of core reduces.Optimized scope is 0.2%-0.5%.
6th, the mass content of Cu is (≤0.2%)
The content for limiting Cu is up to 0.2%, Cu and increases intensity, but also causes higher positive corrosion potential, thus be with
Core is closed, touching the Cu contents of water layer should keep sufficiently low.
The mass content of the 7th, Ti, Cr is (≤0.05%)
Ti, Cr are added as grain refiner, and ingot casting ftractures when can prevent casting.Simultaneously can shape in Casting Ingot Solidification Process
Into thick compound, therefore optimized scope is respectively≤0.05%.
The structure design of Al alloy composite of the present invention be 7072Mod/AA3003/AA4xxx three-deckers or
AA4xxx/7072Mod/AA3003/AA4xxx four-layer structures or more Rotating fields, as long as meet clad material directly connecing with core
Tactile compound and clad material directly exposes as tactile water side or above only one layer skin material is combined.Wherein four line aluminium alloys
AA4xxx is combined as covering brazing filler metal in one or both sides.
Wherein 7072Mod refers to the modified aluminium alloy compared with 7072 aluminium alloys, i.e., at least satisfaction that the present invention is limited
The covering grass plantation material of Zn, Mg, Mn content.
The processing technology step of aluminium alloy compound plate involved in the present invention is as follows：
Alloy melting casts：Respectively according to respective standard melting and casting 4xxx, 3003 and 7072Mod alloys.
Ingot casting is pre-processed：Ingot casting crop end, is heat-treated accordingly according to the application requirement of final finished to ingot casting, and
Process the thickness to needed for being combined.
It is milling face, compound：In a certain order and compound (three layers or four layers are complex as behind milling face than carrying out compound fixation
Or more Rotating fields).
Hot rolling：Will it is compound after plate carry out hot rolling in 450-550 DEG C of temperature range before preheating, be incubated 2-5h, after
Plate is hot-rolled down to into 6-10mm, rolling.
It is cold rolling：At room temperature Jing multi-pass is cold-rolled to required finished product thickness to hot rolled plate.
Finished products：The cold-reduced sheet of finished product thickness is incubated into 1-4h at 380 ± 20 DEG C carries out finished products, obtains final
Finished product plate.
Compared with background technology, the present invention has advantage following prominent：
1st, excellent decay resistance
The addition of Zn and a small amount of Mg in clad material of the present invention, improves the decay resistance of alloy, while the addition of Mn
The alloy current potential that the Mg that can reconcile causes is raised so as to the corrosion potential close with 7072 aluminium alloys, with core AA3003
The cathodic protection of sacrificial anode can be provided after using cooperatively, and then improve the heat exchanger by made by composite plate and touch in water side
Portion's corrosive nature, extends the service life of heat exchanger.
2nd, high intensity
On the premise of ensureing to touch the relatively low corrosion potential of water side alloy, providing cathodic protection for core, by addition Mn,
The elements such as Si, Mg, Fe, can be in alloy hot-working, heat treatment and brazing process by solution strengthening and second-phase strength side
Formula produces optimal invigoration effect, improves and touches the intensity and flushing resistance of water side alloy, and then improves the entirety of composite
Intensity so that its postwelding yield strength be not less than 60MPa (it is conventional require containing the three-layer composite board postwelding yield strength for touching water side >=
45MPa)。
3rd, can be used for carrier gas soldering (CAB), so as to substantially increase soldering efficiency and soldering parts yield rate
Content (＜ 0.6%) due to strictly controlling Mg elements in clad material, enables to by answering that it is combined into
Plywood need not be welded using the mode of vacuum brazing, using the New type soldering flux for matching, it is possible to avoid Mg in carrier gas
Adverse effect in brazing process, while the generation of brazing flux saturation can be prevented.Therefore, the composite board that the present invention is provided is adapted to adopt
CAB solderings are used, the material is capable of achieving and is produced with the carrier gas soldering of other parts, it is high and high yield rate excellent with production efficiency
Point.
Embodiment 1
The invention provides a kind of carrier gas soldering (CAB) of tactile water side containing Mg aluminium alloy compound plate and clad material,
Ensure material corrosion performance and on the premise of not affecting carrier gas Welding effect, improve alloy strength.The present embodiment is one kind
The heat exchanger plate of three layers of aluminium alloy compound, its structure as shown in figure 1, middle core 2 is AA3003Mod alloys, epithelium material 1
For AA4045, it is AA7072Mod to touch water side cladding material 3.Wherein AA4045 alloys contain 10.4% Si；Core AA3003 contains
There are 1.4% Mn, 0.6% Si, 0.7% Fe, 0.2% Cu, 0.1% Ti, remaining is Al and inevitable impurity；
AA7072Mod alloys contain 1.2% Zn's, 0.5% Mn, 0.45% Mg, 0.2% Si, 0.3% Fe, 0.02%
Ti, remaining is Al and inevitable impurity.
The present embodiment is carried out according to the following steps：
1) alloy casting：AA4045, AA3003 and AA7072Mod are cast using semi-continuous casting mode, cast ingot dimension is
450mm (thickness) x1300mm (width) x5000mm (length).
2) homogenize：AA3003 is incubated 12-15h at 600 ± 10 DEG C and carries out Homogenization Treatments.
3) it is combined：AA4045 and AA7072Mod after surface treated is hot-rolled down to 54 ± 0.5mm, then divides equally and is broken into
After 5100mm length, with milling face thickness be about the AA3003 alloys of 432mm according to AA4045, AA3003, AA7072Mod order from
Stack under above and fixed.
4) hot rolling：Material after will be compound is heated to 500 DEG C and is incubated 2-5h, and start rolling temperature is 480 ± 20 DEG C, Ran Houjing
Multistage hot deformation is to 8 ± 1mm, rolling.
5) it is cold rolling：Jing multi-pass is cold-rolled to finished product thickness 1.2mm ± 0.01mm.
6) anneal：Composite cold rolling coil is incubated 2-4h in 380 ± 20 DEG C of annealing furnaces, and air cooling obtains of the present invention
Can carrier gas soldering high-strength composite plate.
The thickness ratio of AA4045, AA3003, AA7072Mod of composite plate is (10 ± 2%) after compound:(80 ± 2%)：
(10 ± 2%).
Aluminium alloy compound plate simulation soldering detection prepared by the present embodiment, simulation soldering processes are Jing 24min intensifications
To 600 DEG C, 10min is incubated, protective atmosphere is argon gas.Mechanical property before and after soldering is as shown in table 1.Finished product O state plates bend
Take intensity and may be up to 75MPa, higher yield strength is still kept after soldering, be 63MPa, and common AA4045/AA3003/
AA7072 systems brazing sheet yield strength is only 45-55MPa.Salt spray corrosion test is carried out after finished product soldering, corrosion failure is obtained
Time is >=8 weeks, and the three-layer composite board material salt air corrosion aperture time that the tactile water side of identical structure, thickness is 7072 is similarly
>=8 weeks, therefore the present invention is ensureing corrosive nature and on the premise of not affecting carrier gas Welding effect, improve alloy into
Product rate and deposited strength.
Aluminium alloy compound plate performance prepared by the embodiment 1 of table 1
Wherein, finished product O states refer to the product after annealed.
Embodiment 2
The present embodiment is a kind of heat exchanger plate of four layers of aluminium alloy compound, and its structure is as shown in Fig. 2 epithelium material 1 is
AA4045, middle core 2 is AA3003 alloys, and it is AA7072Mod that third layer touches water side cladding material 3, and hypodermis material is with epithelium material 1
Also it is AA4045.Wherein AA4045 alloys contain 10.4% Si；Core AA3003 contains 1.5% Mn, 0.6% Si,
0.5% Fe, 0.2% Cu, 0.15% Ti, remaining is Al and inevitable impurity；AA7072Mod alloys contain
1.1% Zn, 0.3% Mn, 0.30% Mg, 0.5% Si, 0.6% Fe, 0.05% Ti, remaining is Al and can not
The impurity for avoiding.
The present embodiment is carried out according to the following steps：
1) alloy casting：AA4045, AA7072 and AA3003 are cast using semi-continuous casting mode, cast ingot dimension is
450×1120×5100mm。
2) homogenize：AA3003 is incubated 12-15h at 600 ± 10 DEG C and carries out Homogenization Treatments.
3) it is combined hot rolling：AA4045 after surface treated is hot-rolled down to 30 ± 0.5mm, and AA7072Mod is hot-rolled down to 150 ±
1.0mm, then divides equally and is broken into 7850mm length, and the AA3003 alloys Jing after homogenization and milling face are hot-rolled down to 290 ± 1.0mm, according to
The order of AA4045, AA3003, AA7072Mod, AA4045 is stacked from top to bottom and fixed.
4) hot rolling：Material after will be compound is heated to 500 DEG C and is incubated 2-5h, and start rolling temperature is 480 ± 20 DEG C, Ran Houjing
Multistage hot deformation is to 8 ± 1mm, rolling.
5) it is cold rolling：Jing multi-pass is cold-rolled to 1.5 ± 0.01mm of finished product thickness.
6) anneal：Composite cold rolling coil is incubated 2-4h in 380 ± 20 DEG C of annealing furnaces, and air cooling obtains of the present invention
Can carrier gas soldering high-strength composite materials in the tube.
The thickness ratio of AA4045, AA3003, AA7072Mod, AA4045 of composite plate is (6 ± 1%) after compound:(58±
2%)：(30 ± 2%)：(6 ± 1%).
Aluminium alloy compound plate simulation soldering detection prepared by the present embodiment, simulation soldering processes are Jing 24min intensifications
To 600 DEG C, 10min is incubated, protective atmosphere is argon gas.Mechanical property before and after soldering is as shown in table 2.Finished product yield strength reaches
71MPa, yield strength is 61MPa after soldering.The salt air corrosion aperture time after finished product soldering is >=8 weeks, with excellent resistance to
Corrosive nature.
Aluminium alloy compound plate performance prepared by the embodiment 2 of table 2
Embodiment 3
The invention provides a kind of carrier gas soldering (CAB) of tactile water side containing Mg aluminium alloy compound plate and clad material,
Ensure material corrosion performance and on the premise of not affecting carrier gas Welding effect, improve alloy strength.The present embodiment is one kind
The heat exchanger plate of three layers of aluminium alloy compound, as shown in figure 1, middle core 2 is AA3003 alloys, epithelium material 1 is its structure
AA4045, it is AA7072Mod to touch water side cladding material 3.Wherein AA4045 alloys contain 10.4% Si；Core AA3003 contains
1.4% Mn, 0.6% Si, 0.7% Fe, 0.2% Cu, 0.1% Ti, remaining is Al and inevitable impurity；
AA7072Mod alloys contain 0.8% Zn's, 0.6% Mn, 0.6% Mg, 0.6% Si, 0.7% Fe, 0.05%
Cr, remaining is Al and inevitable impurity.
The present embodiment is carried out according to the following steps：
1) alloy casting：AA4045, AA3003 and AA7072Mod are cast using semi-continuous casting mode, cast ingot dimension is
450mm (thickness) x1300mm (width) x5000mm (length).
2) homogenize：AA3003Mod is incubated 12-15h at 600 ± 10 DEG C and carries out Homogenization Treatments.
3) it is combined：AA4045 and AA7072Mod after surface treated is hot-rolled down to 54 ± 0.5mm, then divides equally and is broken into
After 5100mm length, with milling face thickness be about the AA3003 alloys of 432mm according to AA4045, AA3003, AA7072Mod order from
Stack under above and fixed.
4) hot rolling：Material after will be compound is heated to 500 DEG C and is incubated 2-5h, and start rolling temperature is 480 ± 20 DEG C, Ran Houjing
Multistage hot deformation is to 8 ± 1mm, rolling.
5) it is cold rolling：Jing multi-pass is cold-rolled to finished product thickness 1.2mm ± 0.01mm.
6) anneal：Composite cold rolling coil is incubated 2-4h in 380 ± 20 DEG C of annealing furnaces, and air cooling obtains of the present invention
Can carrier gas soldering high-strength composite plate.
The thickness ratio of AA4045, AA3003, AA7072Mod of composite plate is (10 ± 2%) after compound:(80 ± 2%)：
(10 ± 2%).
Aluminium alloy compound plate simulation soldering detection prepared by the present embodiment, simulation soldering processes are Jing 24min intensifications
To 600 DEG C, 10min is incubated, protective atmosphere is argon gas.Mechanical property before and after soldering is as shown in table 1.Finished product O state plates bend
Take intensity and may be up to 76MPa, higher yield strength is still kept after soldering, be 65MPa, and common AA4045/AA3003/
AA7072 systems brazing sheet yield strength is only 45-55MPa.Salt spray corrosion test is carried out after finished product soldering, corrosion failure is obtained
Time is >=8 weeks, and the three-layer composite board material salt air corrosion aperture time that the tactile water side of identical structure, thickness is 7072 is similarly
>=8 weeks, therefore the present invention is ensureing corrosive nature and on the premise of not affecting carrier gas Welding effect, improve alloy into
Product rate and deposited strength.
Aluminium alloy compound plate performance prepared by the embodiment 3 of table 3
Embodiment 4
The invention provides a kind of carrier gas soldering (CAB) of tactile water side containing Mg aluminium alloy compound plate and clad material,
Ensure material corrosion performance and on the premise of not affecting carrier gas Welding effect, improve alloy strength.The present embodiment is one kind
The heat exchanger plate of three layers of aluminium alloy compound, as shown in figure 1, middle core 2 is AA3003 alloys, epithelium material 1 is its structure
AA4045, it is AA7072Mod to touch water side cladding material 3.Wherein AA4045 alloys contain 10.4% Si；Core AA3003 contains
1.2% Mn, 0.8% Si, 0.5% Fe, 0.5% Cu, 0.1% Ti, remaining is Al and inevitable impurity；
AA7072Mod alloys contain 0.9% Zn's, 0.1% Mn, 0.5% Mg, 0.1% Si, 0.1% Fe, 0.01%
Ti, 0.03 Cr, remaining is Al and inevitable impurity.
The present embodiment is carried out according to the following steps：
1) alloy casting：AA4045, AA3003 and AA7072Mod are cast using semi-continuous casting mode, cast ingot dimension is
450mm (thickness) x1300mm (width) x5000mm (length).
2) homogenize：AA3003 is incubated 12-15h at 600 ± 10 DEG C and carries out Homogenization Treatments.
3) it is combined：AA4045 and AA7072Mod after surface treated is hot-rolled down to 54 ± 0.5mm, then divides equally and is broken into
After 5100mm length, with milling face thickness be about the AA3003 alloys of 432mm according to AA4045, AA3003, AA7072Mod order from
Stack under above and fixed.
4) hot rolling：Material after will be compound is heated to 500 DEG C and is incubated 2-5h, and start rolling temperature is 480 ± 20 DEG C, Ran Houjing
Multistage hot deformation is to 8 ± 1mm, rolling.
5) it is cold rolling：Jing multi-pass is cold-rolled to finished product thickness 1.2mm ± 0.01mm.
6) anneal：Composite cold rolling coil is incubated 2-4h in 380 ± 20 DEG C of annealing furnaces, and air cooling obtains of the present invention
Can carrier gas soldering high-strength composite plate.
The thickness ratio of AA4045, AA3003, AA7072Mod of composite plate is (10 ± 2%) after compound:(80 ± 2%)：
(10 ± 2%).
Aluminium alloy compound plate simulation soldering detection prepared by the present embodiment, simulation soldering processes are Jing 24min intensifications
To 600 DEG C, 10min is incubated, protective atmosphere is argon gas.Mechanical property before and after soldering is as shown in table 1.Finished product O state plates bend
Take intensity and may be up to 70MPa, higher yield strength is still kept after soldering, be 62MPa, and common AA4045/AA3003/
AA7072 systems brazing sheet yield strength is only 45-55MPa.Salt spray corrosion test is carried out after finished product soldering, corrosion failure is obtained
Time is >=8 weeks, and the three-layer composite board material salt air corrosion aperture time that the tactile water side of identical structure, thickness is 7072 is similarly
>=8 weeks, therefore the present invention is ensureing corrosive nature and on the premise of not affecting carrier gas Welding effect, improve alloy into
Product rate and deposited strength.
Aluminium alloy compound plate performance prepared by the embodiment 4 of table 4
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and and
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out the change or variation of other multi-forms.There is no need to be exhaustive to all of embodiment.And thus drawn
Obvious change that Shen goes out or among changing still in protection scope of the present invention.
Claims (10)
1. a kind of carrier gas soldering clad material of high-strength aluminum alloy composite plate, the clad material is matter containing 0.8-1.2%
The aluminium alloy of the Fe of Mn, 0.1-0.7% mass of Mg, 0.1-0.6% mass of Zn, 0.3-0.6% mass of amount.
2. clad material as claimed in claim 1, it is characterised in that the clad material contains the Si of 0.1-0.6% mass.
3. clad material as claimed in claim 1 or 2, it is characterised in that the mass content of Cu in the clad material≤
0.2%.
4. clad material as claimed in claim 1 or 2, it is characterised in that the mass content of Ti in the clad material≤
0.05%.
5. clad material as claimed in claim 1 or 2, it is characterised in that the mass content of Cr in the clad material≤
0.05%.
6. clad material as claimed in claim 1 or 2, it is characterised in that the mass content of Zn is 0.9-1.1%, the matter of Mg
Amount content is 0.3-0.45%, and the mass content of Mn is 0.3-0.5%, and the mass content of Fe is 0.3-0.6%.
7. clad material as claimed in claim 1 or 2, it is characterised in that the mass content of Si is 0.2%-0.5%.
8. the composite plate being prepared into using the clad material described in any one of claim 1 to 7, it is characterised in that described compound
The core of plate is AA3003, and the side of the core is compounded with the clad material.
9. composite plate as claimed in claim 8, it is characterised in that the opposite side of the core is compounded with four line aluminium alloys.
10. composite plate as claimed in claim 8 or 9, it is characterised in that being compounded with four on the outer surface of the clad material is
Aluminium alloy.
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| CN201611024530.5A CN106626601A (en) | 2016-11-18 | 2016-11-18 | High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material |
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| CN201611024530.5A CN106626601A (en) | 2016-11-18 | 2016-11-18 | High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material |
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| CN109082567A (en) * | 2018-09-26 | 2018-12-25 | 银邦金属复合材料股份有限公司 | A kind of preparation method of aluminum alloy composite board |
| CN115038546A (en) * | 2019-12-13 | 2022-09-09 | 诺贝丽斯科布伦茨有限责任公司 | Multilayer aluminum brazing sheet material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881370A (en) * | 2017-11-02 | 2018-04-06 | 银邦金属复合材料股份有限公司 | A kind of five layers of aluminum alloy composite board and complex method |
| CN109082567A (en) * | 2018-09-26 | 2018-12-25 | 银邦金属复合材料股份有限公司 | A kind of preparation method of aluminum alloy composite board |
| CN109082567B (en) * | 2018-09-26 | 2020-04-24 | 银邦金属复合材料股份有限公司 | Preparation method of aluminum alloy composite board |
| CN115038546A (en) * | 2019-12-13 | 2022-09-09 | 诺贝丽斯科布伦茨有限责任公司 | Multilayer aluminum brazing sheet material |
| CN115038546B (en) * | 2019-12-13 | 2024-01-30 | 诺贝丽斯科布伦茨有限责任公司 | Multi-layer aluminum brazing sheet material |
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