CN105112730B - The aluminium alloy plate for battery case of formability and welding property excellent - Google Patents
The aluminium alloy plate for battery case of formability and welding property excellent Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 57
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 66
- 238000005097 cold rolling Methods 0.000 claims abstract description 44
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 25
- 238000000137 annealing Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 9
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011324 bead Substances 0.000 description 42
- 230000035515 penetration Effects 0.000 description 37
- 230000004927 fusion Effects 0.000 description 36
- 238000011156 evaluation Methods 0.000 description 30
- 230000002159 abnormal effect Effects 0.000 description 28
- 238000005266 casting Methods 0.000 description 23
- 239000012071 phase Substances 0.000 description 14
- 229910000765 intermetallic Inorganic materials 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 235000010210 aluminium Nutrition 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000013078 crystal Substances 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 7
- 230000008025 crystallization Effects 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000007872 degassing Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 229910018084 Al-Fe Inorganic materials 0.000 description 5
- 229910018192 Al—Fe Inorganic materials 0.000 description 5
- 229910000952 Be alloy Inorganic materials 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018191 Al—Fe—Si Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910010038 TiAl Inorganic materials 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 229910007880 ZrAl Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- -1 and then Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000002344 gold compounds Chemical class 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910001235 nimonic Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000036186 satiety Effects 0.000 description 1
- 235000019627 satiety Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to can apply to the high intensity of large-scale lithium ion battery container, and have excellent formability, laser welding also excellent Al Fe line aluminium alloy plates.Aluminium alloy plate is the cold rolling material of value with more than 5% elongation and more than 90MPa tensile strength, and with following chemical compositions：Fe containing 0.3~1.5 mass %, 0.3~1.0 mass % Mn, 0.002~0.20 mass % Ti, 0.001~0.05 mass % Zr, 0.0005~0.10 mass % B, Mn/Fe mass ratio is 0.2~1.0, remainder is made up of Al and impurity, it is that Si is less than 0.20 mass % less than 0.30 mass %, Cu less than 0.20 mass %, Mg respectively as impurity；And it is less than 500/mm with equivalent circle diameter for more than 5 μm of second phase particles number2Metallographic.Or, aluminium alloy plate is that the value of elongation is more than 20% cold rolled annealed material.
Description
The application is that international application no is PCT/JP2011/080130, and international filing date is the PCT on December 26th, 2011
International application enters entitled " formability and the welding property excellent that national applications number after the Chinese stage is 201180055947.7
The divisional application of the Chinese patent application of aluminium alloy plate for battery case ".
Technical field
The present invention relates to formability and laser welding used in the secondary cell container of lithium ion battery etc. are excellent
Aluminium alloy plate.
Background technology
The 3000 of Al-Mn systems be alloy because intensity, formability and laser welding are more excellent, therefore be gradually used as
Raw material when manufacturing the secondary cell container of lithium ion battery etc..Tapped into after the shape needed for being configured to by Laser Welding
Row sealing, is used as secondary cell with container.By with above-mentioned 3000 be alloy and existing 3000 be alloy based on, it is also complete
The exploitation for the secondary cell container aluminium alloy plate being improved into intensity and formability.
For example, having recorded the square-section battery case with following characteristics in No. 4001007 publications of Japanese Patent No.
Use aluminium alloy plate：As the composition of aluminium alloy plate, the Si containing 0.10~0.60 mass %, 0.20~0.60 mass % Fe,
0.10~0.70 mass % Cu, 0.60~1.50 mass % Mn, 0.20~1.20 mass % Mg, more than 0.12 mass %
And Zr, 0.05~0.25 mass % Ti, 0.0010~0.02 mass % B less than 0.20 mass %, remainder is by Al
Constituted with inevitable impurity, 45 ° of earing rate (Japaneses with cylindrical vessel deep drawing forming process relative to rolling direction：45°
Ear rate) it is 4~7%.
On the other hand, following square lithium ion battery case aluminium alloy plates be also developed recently as battery container：Tool
There are enough intensity and drawing-thinning drawing processing, creep properties, laser welding is excellent, and discharge and recharge can be suppressed and follow
Thickness of shell increase during ring.The square electricity with following compositions has been recorded in Japanese Patent Laid-Open 2010-126804 publications
Pond container aluminium alloy plate：Mn containing more than 0.8 mass % and in below 1.8 mass %, more than 0.6 mass % and 1.2
Below quality % Mg, more than 0.5 mass % and in below 1.5 mass % Cu, the Fe as impurity is limited in 0.5 matter
Amount below %, Si are limited in below 0.3 mass %, and remainder is made up of Al and inevitable impurity, { 001 }<100>Take
To orientation density C and { 123 }<634>The ratio between orientation density S of orientation (C/S) also has, finally less than 1.5 more than 0.65
Tensile strength after cold rolling is in more than 250MPa below 330MPa, and elongation is more than 1%.
But, by 3000 be alloy based on and in the case of the aluminium alloy plate improved is constituted to it, it is known that
Welding penetration is not enough sometimes, can according to circumstances produce abnormal bead (Japanese：ビ ー De), exist in laser welding and ask
Topic.
Then, also developed by 1000 be based on the excellent secondary cell container aluminium alloy plate of laser welding.
Recorded in Japanese Patent Laid-Open 2009-127075 publications by carrying out pulsed laser welding, abnormal portion to A1000 systems aluminium
Generation prevented, the pulsed laser welding aluminium alloy material and battery container of good weld part can be formed uniformly.
Thus, the Ti for being used to suppress the coarsening of crystal grain and add in casting process in the past produces harmful effect to weld part, in order to
The formation of abnormal portion when preventing from welding A1000 system's aluminium is fetched by pulse laser welding, as long as Ti contained in fine aluminium is limited
For less than 0.01 mass %.
Further, as by 3000 be alloy based on and improve the aluminium alloy of high intensity, formability, weldability, in day
The Mn comprising 0.3~1.5 mass % is proposed in this patent JP 2003-7260 publications, more than 1.0 and in 1.8 mass %
Following Fe, the secondary cell housing aluminium alloy plate that remainder is made up of Al and inevitable impurity.It can also contain
0.1~0.8 mass % Cu and/or Mg, and/or 0.05~0.2 mass % more than 0.10 and in below 1.0 mass % Cr
And/or 0.05~0.2 mass % Zr.But, detailed investigation is not carried out to weldability.
The content of the invention
In most cases, although 1000 being weldability stable (abnormal bead number is few), having excellent formability, exist intensity compared with
Low the problem of.Therefore, in the evolution of the maximization of lithium ion battery, expectation also requires high-strength characteristic, directly makes
There is problem with the 1000 aluminiums aspects for being.
As described above, in the case of 3000 alloy sheets for being, although intensity and deep fusion penetration can be obtained, but be with 1000
Alloy sheets compare, have the tendency of that formability is poor, abnormal bead number is more.In addition, in the case of 1000 alloy sheets for being, although
Have excellent formability, abnormal bead number reduces, but has the anxiety of intensity deficiency.
The present invention is the invention in order to solve the above problems and propose, a kind of large-scale with can be used in the purpose is to provide
The high intensity of lithium ion battery container, and have excellent formability, laser welding also excellent Al-Fe line aluminium alloy plates.
In order to achieve the above object, the feature of the aluminium alloy plate for battery case of formability of the invention and welding property excellent
It is, with following chemical compositions：Fe containing 0.3~1.5 mass %, 0.3~1.0 mass % Mn, 0.002~0.20 matter
% Ti is measured, Mn/Fe mass ratio is 0.2~1.0, and remainder is made up of Al and inevitable impurity, as can not keep away
Si, Cu and the Mg for the impurity exempted from, Si are less than 0.20 mass % less than 0.30 mass %, Cu less than 0.20 mass %, Mg；And have
There is the second phase particles number that equivalent circle diameter is more than 5 μm to be less than 500/mm2Metallographic.
In the case of cold rolling material, the tensile strength cold rolling material with more than 5% elongation values and more than 90MPa.
In addition, in the case of cold rolled annealed material is made, with more than 20% elongation values.
In order to which ingot bar rupture during casting or bead rupture during laser welding can be prevented, can also containing 0.05~
0.20 mass % Zr.
The aluminium alloy plate of the present invention has high intensity, formability also excellent, and has excellent laser welding, therefore
The secondary cell container that airtight performance is excellent and expansion energy is inhibited can be manufactured with low cost.
Particularly in the case of cold rolling material, cold rolled annealed material is being made in the tensile strength with more than 90MPa
In the case of, elongation values show excellent formability for more than 20%.
Brief description of the drawings
Fig. 1 is the schematic diagram of measure/evaluation method of specification exception bead number, and (A) is welding bead (Japanese：Weld ビ ー De)
Top view, (B) is to represent the figure along the bead change width of bead length direction.
Fig. 2 is the schematic diagram for the measure/evaluation method for illustrating fusion penetration, and (A) is the top view of welding bead, and (B) is sectional view.
Embodiment
After secondary cell is by the way that electrode body is put into container, is installed using welding etc. and cover, sealed to manufacture.If
This secondary cell is used for mobile phone etc., then in charging, has the temperature inside container and rises, the pressure increase inside container
Situation.Therefore, if constituting the low intensity of the material of container, manufactured container has the problem of occurring big expansion.
Therefore, as used material, it is desirable to high intensity.
In addition, as the method for constituting container, usually using extrusion, it requires that used material has itself excellent
Different extrusion molding.
Welding is used moreover, installing lid and carrying out sealed method, therefore also requires that weldability is also excellent.Moreover, conduct
Welding during secondary cell container etc. is manufactured, it is more using the situation of method of laser welding.
On the other hand, on laser welding, stability, the stabilization of fusion penetration of (1) weld width can be enumerated as problem
Property and (2) obtain for weld width deeper fusion penetration.
Typically, if weld width broadens, fusion penetration also has the tendency of intensification.Therefore, in local abnormal bead
Portion, weld width is broadened, fusion penetration is deepened, it is serious in the case of, it may occur that fusing department is penetrated, so as to cause the performance of battery
With the decline of reliability.
In addition, on the other hand, in order to investigate fusion penetration, in addition it is also necessary to observe substantial amounts of section, to pay hard work.Can
It is, as noted previously, as it is related between the weld width and fusion penetration in same alloy, so being examined by determining weld width
Abnormal (thick) bead is measured, the ratio of the bead of the fusion penetration exception of generation problem can be simply investigated.
The present inventor is excellent in order to obtain high intensity, extrusion molding, and the exception occurred by inquiry in weld part
Bead number and the laser welding known in the fusion penetration of weld part also excellent aluminium alloy plate, are repeated and conscientiously study, from
And complete the present invention.
Below, its content is illustrated.
First, illustrate the effect of each element contained in the secondary cell container aluminium alloy plate of the present invention, appropriate contain
Amount etc..
Fe:0.3~1.5 mass %
Fe can increase the intensity of aluminium alloy plate, it is ensured that the fusion penetration in laser welding, so being indispensable element.If Fe contains
Amount is less than 0.3 mass %, then the intensity of aluminium alloy plate declines, and fusion penetration during laser welding reduces, so not preferred.If Fe's
Content is more than 1.5 mass %, then Al- (FeMn)-Si systems, Al when ingot bar is cast6Intermetallic compound knot thick Fe etc.
Partial crystallization goes out, and the formability of till soleplate declines, and the evaporation easier than Al matrixes in laser welding of these intermetallic compounds, different
Normal bead number increase, weldability decline, so not preferred.
Therefore, Fe contents use 0.3~1.5 mass % scope.Preferred Fe contents are 0.5~1.5 mass %
Scope.Further preferred Fe contents are 0.7~1.5 mass % scopes.
Mn:0.3~1.0 mass %
Mn can increase the intensity of aluminium alloy plate, it is ensured that the fusion penetration in laser welding, so being indispensable element.If Mn contains
Amount is less than 0.3 mass %, then the intensity of aluminium alloy plate declines, and fusion penetration during laser welding reduces, so not preferred.If
Mn content is more than 1.0 mass %, then Al- (FeMn)-Si systems, Al when ingot bar is cast6Intermetallic thick Mn etc.
Thing crystallization is separated out, and the formability of till soleplate declines, and the steaming easier than Al matrixes in laser welding of these intermetallic compounds
Hair, abnormal bead number increase, weldability decline, so not preferred.
Therefore, Mn contents use 0.3~1.0 mass % scope.Preferred Mn contents are 0.3~0.8 mass %
Scope.Further preferred Mn contents are 0.4~0.7 mass % scopes.
Ti:0.002~0.20 mass %
Ti works when ingot bar is cast as the fine agent of crystal grain, can prevent casting from rupturing.
Certainly, Ti can be added individually, due to that can expect the micronized effect of more powerful crystal grain by being coexisted with B,
Therefore can also be with the rod intermediate alloy (Japanese such as Al-5%Ti-1%B：ロ ッ ド ハ ー ド ナ ー) form addition.
If Ti contents are less than 0.002 mass %, micronized effect when ingot bar is cast is insufficient, and it is possible to make
Ruptured into casting, thus it is not preferred.If Ti contents are more than 0.20 mass %, the TiAl when ingot bar is cast3Etc. thick gold
Compound crystallization is separated out between category, declines the formability of till soleplate, so not preferred.
Therefore, Ti contents use 0.002~0.20 mass % scope.Preferred Ti contents are 0.002~0.15 matter
Measure % scope.Further preferred Ti contents are 0.005~0.10 mass % scopes.
Zr:0.05~0.20 mass %
Zr is same with Ti, is worked when ingot bar is cast as the fine agent of crystal grain, can prevent casting from rupturing.In addition,
If Ti and Zr coexists, it can prevent the welding bead portion solidified with chilling from being ruptured in solidification, realize pulse laser
The high speed of welding.If Ti, Zr and B coexists, prevent the welding bead portion solidified with chilling from being ruptured in solidification
Effect become more notable.Therefore, it can contain as needed.
If Zr contents are more than 0.20 mass %, the ZrAl when ingot bar is cast3Crystallized etc. thick intermetallic compound
Separate out, decline the formability of till soleplate, so not preferred.If Zr contents are less than 0.05 mass %, it can not obtain enough
Effect.Accordingly, it is preferred that Zr contents are 0.05~0.20 mass %.Preferred Zr contents are 0.07~0.20 mass %
Scope.Further preferred Zr contents are 0.07~0.18 mass % scopes.
B:0.0005~0.10 mass %
B is also same with Ti, Zr, is worked when ingot bar is cast as the fine agent of crystal grain, can prevent casting from rupturing, institute
So that B can also be contained as needed.
If B content is more than 0.10 mass %, TiB2As stabilized intermetallic compound, crystal grain micronized effect
Decay, and it is possible to which the appearance surfaces occurred after DI shapings are coarse, so not preferred.If B content is less than 0.0005 matter
% is measured, then can not obtain sufficient crystal grain micronized effect.Accordingly, it is preferred that B content is 0.0005~0.10 mass %.It is more excellent
The B content of choosing is 0.001~0.05 mass % scope.Further preferred B content is 0.001~0.01 mass % model
Enclose.
It is used as the Si contents of inevitable impurity:Less than 0.30 mass %
As the Si of inevitable impurity content, it is preferably limited to be less than 0.30 mass %.If Si contents exist
More than 0.30 mass %, the then intermetallic compound crystallization that Al- (FeMn)-Si etc. is thick when ingot bar is cast is separated out, shaping
Property decline.Preferred Si contents are less than 0.25 mass %.Further preferred Si contents are less than 0.20 mass %.
In the present invention, if Si contents are less than 0.20 mass %, the characteristic of formability and weldability etc. would not decline.
It is used as the Cu of inevitable impurity:Less than 0.2 mass %
As the Cu of inevitable impurity, it can be contained with the amount less than 0.2 mass %.In the present invention, if Cu contains
Amount is less than 0.2 mass %, then the characteristic of formability and weldability etc. would not decline.
It is used as the Mg of inevitable impurity:Less than 0.2 mass %
As the Mg of inevitable impurity, it can be contained with the amount less than 0.2 mass %.In the present invention, if Mg contains
Amount is less than 0.2 mass %, then the characteristic of formability and weldability etc. would not decline.
Other inevitably impurity
Inevitable impurity is derived from raw material base bullion, returns to the impurity being inevitably mixed into of waste material etc.,
Their admissible content is, such as Zn be less than 0.25 mass %, Ni be less than 0.20 mass %, Ga and V be less than
0.05 mass %, Pb, Bi, Sn, Na, Ca, Sr is less than 0.02 mass % respectively, and other impurities are respectively less than 0.05 mass %, at this
In the range of even if containing management outside element will not also harm the present invention effect.
Mn/Fe mass ratio:0.2~1.0
In the range of Fe, Mn content within the scope of the invention, if Mn/Fe ratios are less than 0.2, during laser welding
Fusion penetration reduces, so not preferred.In the range of Fe, Mn content within the scope of the invention, if Mn/Fe ratios are more than 1.0,
Abnormal bead number increase, so not preferred.
On the other hand, the species and volume production for the intermetallic compound that crystallization is separated out when Mn/Fe mass ratio is cast to ingot bar
Raw influence.Example, it is well known that, if the increase of Mn/Fe mass ratioes, Al6The quantity of the intermetallic compound of Mn systems
Increase.
On the other hand, these Al6Mn etc. intermetallic compound and Al-Fe-Si, Al6Fe、Al3Fe etc. intermetallic
Thing is compared, in laser welding easily evaporation and it is unstable.Therefore, if Mn/Fe ratios are more than 1.0, it is considered that Laser Welding
Abnormal bead number increase when connecing, weldability declines.
In addition, Mn can increase the thermal resistance of material by being solid-solution in Al matrixes, therefore when ensuring laser welding
It is element more prior than Fe in terms of fusion penetration.
Therefore, if Mn/Fe ratios are less than 0.2, it is considered that insufficient (incomplete) penetration during laser welding.
Tensile strength and elongation values
Cold rolling material:The value of elongation is more than 5% and tensile strength is in more than 90MPa
Cold rolled annealed material:The value of elongation is more than 20%
On the other hand, when Al-Fe line aluminium alloys plate is applied into large-scale lithium ion battery container etc., do not need only to have
High intensity and excellent laser welding, in addition it is also necessary to which formability is also excellent.The intensity of material can by carry out tension test when drawing
Intensity is stretched to learn, formability can by tension test when the worth of elongation know.
Detailed content is of the invention as what is used in large-scale lithium ion battery container etc. described in embodiment described later
Al-Fe line aluminium alloy plates, when being cold rolling material, preferably the value with elongation be more than 5% and tensile strength 90MPa with
On characteristic cold rolling material；During for cold rolled annealed material, preferably the value with elongation is the cold rolling of more than 20% characteristic
Annealed material.
Equivalent circle diameter in metallographic is less than 500/mm for more than 5 μm of second phase particles number2
Characteristic as described above can be entered by the metallographic to the Al-Fe line aluminium alloy plates with above-mentioned specific chemical composition
The fine adjustment of row and show.
Specifically, as long as making the equivalent circle diameter in metallographic be less than 500/mm for more than 5 μm of second phase particles number2
.
Either cold rolling material or cold rolled annealed material, metallographic do not have difference.If with metallographic as described above,
Cold rolling material shows the value of more than 5% elongation and more than 90MPa tensile strength, and cold rolled annealed material shows 20%
The value of elongation above.
Then, simply introduced with the method for aluminium alloy plate manufacturing secondary cell container as described above.
Fusing and melting
Raw material is put into melting furnace, if reaching defined fusion temperature, appropriate input flux is simultaneously stirred,
Carried out as needed using spray gun etc. after being deaerated in stove, keep tranquil, dregs are separated from the surface of liquation.
In the fusing and melting, due to using defined alloying component, so the raw material of foundry alloy etc. is put into also very again
It is important, but it is extremely important that, it is necessary to foot untill above-mentioned flux and dregs float up to liquation face from molten aluminium alloy and separated
The enough tranquil time.It is desirable that the tranquil time usually requires more than 30 minutes.
Molten aluminium alloy is according to circumstances different as obtained by melting furnace melting, and a part of liquation is transferred into holding furnace sometimes
Cast again afterwards, directly liquation is ejected from melting furnace sometimes and cast.The more preferably tranquil time be 45 minutes with
On.
On-line degassing (Japanese can also be carried out as needed：イ Application ラ イ Application takes off ガ ス), filtering.
The mainstream type of on-line degassing is to be blown into inert gas etc. into aluminum melt from rotor, makes the hydrogen in liquation
Diffuse to the type removed in the bubble of inert gas.
When using nitrogen as inert gas, it is important that by dew point control at such as less than -60 DEG C.Hydrogen in ingot bar
Amount is preferably reduced to below 0.20cc/100g.
When the amounts of hydrogen of ingot bar is more, hole is produced in the final solidification portion of ingot bar, so needing every 1 in hot-rolled process
Passage (Japanese：パ ス) reduction ratio be limited to such as more than 7%, so as to destroy hole.
In addition, in ingot bar the homogenize process that the hydrogen of supersaturation ground solid solution is depended on before hot-rolled process condition, but have
When can be separated out in the laser welding after the shaping of till soleplate, make to produce substantial amounts of stomata in bead.So, preferred ingot bar
In amounts of hydrogen be below 0.15cc/100g.
Casting
Ingot bar is manufactured by semi-continuous casting (DC castings).In the case of common semi-continuous casting, the thickness of ingot bar
Usually 400~600mm or so, so the solidification cooling of ingot bar central portion is 1 DEG C/sec or so.Therefore, particularly exist
During the high molten aluminium alloy of semi-continuous casting Fe, Mn content, at ingot bar central portion, the thicker gold such as Al- (FeMn)-Si
Compound is tended to crystallize from molten aluminium alloy and separated out between category.
Casting speed in semi-continuous casting depends on width, the thickness of ingot bar, but in view of productivity, typically 50~
70mm/ minutes.But, when carrying out on-line degassing, if it is considered that the actual liquation holdup time in degassing process groove, then
The degassing conditions such as the flow of inert gas are additionally depended on, the flow (the liquation supply in time per unit) of aluminum melt is smaller then
Degassing efficiency in groove is higher, more can reduce the amounts of hydrogen of ingot bar.Although additionally depending on casting radical of casting etc., in order to
Reduce the amounts of hydrogen of ingot bar, it is generally desirable to which casting speed is defined to 30~50mm/ minutes.More preferably casting speed be 30~
40mm/ minutes.Certainly, if casting speed is less than 30mm/ minutes, productivity declines, so undesirable.Further it is evident that casting
Make that speed is slower, the liquid cave (Japanese in ingot bar：サ Application プ) (interface of solid phase/liquid phase) gradient it is more slow, more can prevent
Casting rupture.
Homogenize process:420~600 DEG C × more than 1 hour
To implementing homogenize process using ingot bar obtained by semi-continuous casting method casting.
Homogenize process refers to ingot bar is held in into high temperature in order to easily be rolled, carry out elimination casting aliquation,
The processing of residual stress inside ingot bar.In present invention, it is desirable to being kept for more than 1 hour at 420~600 DEG C of keeping temperature.Should
In the case of or for making to be formed in during casting transition elements of intermetallic compound that crystallization is separated out etc. to a certain degree
On be solid-solution in the processing of matrix.The keeping temperature is too low or in the case that keeping temperature is short, it is possible to will not occur above-mentioned mistake
The solid solution of element etc. is crossed, recrystallization grains are thicker, the appearance surfaces after DI shapings can not be finished nattily.If in addition, protected
Hold that temperature is too high, then as ingot bar microcosmic final solidification portion CuMgAl2Deng eutectic part be possible to dissolve, occur
Aoxidize (Japanese：バーニング).Preferred homogenize process temperature is 420~590 DEG C.
Hot-rolled process
The ingot bar that high temperature is held in the stipulated time is directly sling after homogenize process with crane, hot rolling is delivered to
Machine, though it is relevant with the machine of hot-rolling mill, generally by multiple rolling pass, can be made defined thickness, such as 4~
8mm or so hot rolled plate is simultaneously wound on roller.
Cold rolling process
Make the roller for being wound with hot rolled plate by cold-rolling mill, generally implement the cold rolling of several passages.Now, due to being led because cold rolling
The plastic deformation that enters and occur processing hardening, so intermediate annealing process can be carried out as needed.Usual intermediate annealing is also soft
Change is handled, thus it is different because of material, cold roll can be inserted in batch furnace, be kept for 1 hour with 300~450 DEG C of temperature
More than.If keeping temperature is less than 300 DEG C, softening can not be promoted, if keeping temperature is more than 450 DEG C, can be caused
The increase of processing cost.In addition, as intermediate annealing, if using continuous annealing furnace at a temperature of such as 450 DEG C~550 DEG C
Within being kept for 15 seconds, then rapidly cool down, then can also double as solution treatment.If keeping temperature is less than 450 DEG C, soften nothing
Method is promoted, if keeping temperature is more than 550 DEG C, it is likely that aoxidize.
Final annealing
In the present invention, the final annealing carried out after final cold rolling can be for example with annealing furnace temperature 400~
The batch-type process of holding more than 1 hour at 500 DEG C, if using continuous annealing furnace at a temperature of such as 500 DEG C~550 DEG C
Within being kept for 15 seconds, then rapidly cool down, then can also double as solution treatment.
In a word, the final annealing in the present invention is not required, if but in view of the formability in common DI shapings, reason
What is thought is as far as possible in advance to soften till soleplate.If further contemplating the formability in metal die forming process, preferably
Annealed material or solution treatment material is made in advance.
There is provided cold rolling material in the case of the precedence requirement mechanical strength relative to formability.
Final cold rolling rate
Final cold rolling rate in the case of implementation final annealing is preferably in the range of 50~90%.If final cold rolling rate exists
In the range of being somebody's turn to do, then the grain of the average recrystallization in the till soleplate after annealing can be made to reach 20~100 μm, the value of elongation is reached
More than 20%, so as to which the appearance surfaces after shaping are finished nattily.Further preferred final cold rolling rate is 60~
90% scope.
On the other hand, the final cold rolling rate when cold rolling material is made on the premise of not implementing final annealing is preferably 5
In the range of~40%.DI shape when, in the case where thinning drawing processing is more, it is necessary to provide than annealed material slightly it is hard most
Soleplate.If final cold rolling rate is less than 5%, though it is relevant with composition, the tensile strength for being difficult to make till soleplate is reached into 90MPa
More than, if final cold rolling rate is more than 40%, though it is relevant with composition, the value for the elongation for being difficult to make till soleplate is reached
More than 5%.
If final cold rolling rate is within the range, can make the elongation of cold rolling till soleplate value reach more than 5% and
Tensile strength is set to reach more than 90MPa.Further preferred final cold rolling rate is 10~30% scope.
By by common process as described above, resulting in secondary cell container aluminium alloy plate.
Embodiment
The manufacture of till soleplate
Defined various ingot castings are measured, blended, filling 6kg is inserted respectively in No. 20 crucibles for be coated with release materials
The ingot casting of (adding up to 8 materials to be tested).These crucibles are inserted in electric furnace, is melted in 780 DEG C and removes dregs, then by liquation
Temperature is held in 760 DEG C, then by de- dregs with each 6g bags of flux in aluminium foil, with phosphorizer (phosphorizer) extruding add
Plus.
Then, spray gun is inserted in liquation, by N2Gas was blown into 10 minutes to be de-gassed place with the flow of 1.0L/ minutes
Reason.Then, the dregs floated on molten surface are removed tranquil 30 minutes, with stirring rod, then with sample spoon by disk sample take into
Divide in analysis mould.
Then, crucible is taken out out of electric furnace successively with fixture, be preheated metal die (250mm × 200mm ×
Casting aluminum melt in 30mm).Composition analysis is carried out with emission spectroanalysis to the disk sample of each material to be tested.The results are shown in
Table 1.
[table 1]
Table 1：The composition composition of material to be tested
For ingot bar, after rising head is cut off, progress 2mm each to two sides surface cut makes thickness reach 26mm.
The ingot bar is inserted in electric furnace, 430 DEG C are heated to 100 DEG C/h of programming rate, 430 DEG C × 1 is carried out
The homogenize process of hour, then implements hot rolling until thickness reaches 6mm with hot-rolling mill.
Cold rolling is implemented to the hot rolled plate, the cold-reduced sheet that thickness is 1.25mm is obtained.The cold-reduced sheet is inserted into annealing furnace,
Keep carrying out after intermediate annealing process for 1 hour at 390 DEG C, annealed sheet is subjected to air cooling after annealing furnace taking-up.Then, it is right
The annealed sheet implements cold rolling, obtains the cold-reduced sheet that thickness is 1.0mm.In this case final cold rolling rate is 20%.
Cold rolled annealed plate is to implement cold rolling by not implementing intermediate annealing to above-mentioned hot rolled plate, so that the 1mm obtained
Cold-reduced sheet.In this case final cold rolling rate is 83.3%.Final annealing is that cold-reduced sheet is inserted into annealing furnace, small 390 DEG C × 1
When under conditions of made annealing treatment after, by cold-reduced sheet from annealing furnace taking-up after carry out air cooling.
Then, to thus gained till soleplate (each material to be tested) being formed property, laser welding evaluation.
The evaluation of formability
The formability evaluation of till soleplate obtained by being carried out as the elongation (%) of tension test.
Specifically, JIS5 test film is gathered in the draw direction mode parallel with rolling direction, according to JISZ2241
To carry out tension test, tensile strength (UTS), 0.2% yield strength (YS), elongation (elongation at break) are calculated.
In cold rolling till soleplate, the value of elongation is designated as formability well (zero) for more than 5% material to be tested, will be low
In 5% material to be tested, to be designated as formability bad (×).Evaluation result is shown in table 2.
In the till soleplate that annealing is implemented after cold rolling, the value of elongation is designated as formability for more than 20% material to be tested
Well (zero), will be less than 20% material to be tested, to be designated as formability bad (×).Evaluation result is shown in table 3.
Compiled in addition, the material to be tested in table 3 numbers to add with each material to be tested numbering shown in table 1 obtained by 10 digit
Number it is indicated.
Laser Welding Condition
Till soleplate to gained carries out pulsed laser irradiation, to carry out the evaluation of laser welding.Using Lu's nimonic this
The YAG laser-beam welding machine JK701 of company (LUMONICS societies) system, in frequency 37.5Hz, speed of welding 450mm/ minutes, each arteries and veins
Under conditions of the energy 6.0J of punching, protective gas (nitrogen) flow 1.5 (L/ minutes), to the plate of 2 pieces of identical materials to be tested to hold
The mode that portion is very close to each other each other, be close to carries out the pulsed laser welding that overall length is 120mm length along the part.
The evaluation of laser welding, measure/evaluation of abnormal bead number
Then, as the evaluation of laser welding, the abnormal bead number produced in weld part is determined.First, above-mentioned
In the sealing wire of 120mm length, the sealing wire of the 60mm length of middle body is defined as mensuration region.Then, as shown in figure 1,
The circle by each pulses generation that sealing wire in welding direction with 0.05mm interval METHOD FOR CONTINUOUS DETERMINATION along 60mm length is formed it is molten
Melt the width of bead, calculate " the average weld width " of every 10mm length (1 is interval), calculated by each interval " average weld width "
More than 1.1 local number of deviation bead width is represented, and is represented with ratio.By the counting phase of 60mm (6 is interval) part
Plus, it is used as the abnormal bead number of the material to be tested.
In present specification, the material to be tested by abnormal bead number less than 10 is designated as abnormal bead number and evaluates good (zero), will
Material to be tested of the abnormal bead number more than 10 is designated as abnormal bead number and evaluates bad (×).The evaluation result of cold rolling material is shown
In table 2, the evaluation result of cold rolled annealed plate is shown in table 3.
Measure/evaluation of fusion penetration
Then, as the evaluation of laser welding, the fusion penetration of weld part is determined.As shown in Fig. 2 cut out with welding direction
Plate section on vertical direction, is embedded to thermoplastic resin by the plate section and carries out mirror ultrafinish, vertical to observe weld part
The metallographic in section.
The heat that the intermetallic compound that crystallization is separated out during casting is produced by pulsed laser irradiation melts to high temperature
Enter in aluminium, and then, bead will be dissolved and rapidly cooled down, form the element satiety such as Fe, Mn, Si of the above-mentioned intermetallic compound of composition
The tissue in Al matrixes is solid-solution in ground.
Therefore, by observing the metallographic of weld part vertical cross-section, intermetallic compound is not only observed in the section
The region of Al matrixes is puddle, by determining depth capacity of the region away from final plate surface, can determine fusion penetration.
The fusion penetration that 5 sections are carried out to 1 material to be tested is determined, and is averaged value as the fusion penetration (μ of the material to be tested
m).In addition, the section at now above-mentioned abnormal bead is not belonging to measure object.
In this specification, fusion penetration is designated as fusion penetration evaluation well (zero) for more than 220 μm of material to be tested, fusion penetration is less than
220 μm of material to be tested is designated as fusion penetration and evaluates bad (×).The evaluation result of cold rolling material is shown in table 2, by cold rolled annealed plate
Evaluation result be shown in table 3.
[table 2]
Table 2：The evaluation result (cold rolling material) of material to be tested
[table 3]
Table 3：The evaluation result (cold rolled annealed material) of material to be tested
The evaluation of each material to be tested
Show cold rolling material evaluation result table 2 in embodiment 1~4 be composition the present invention compositing range in
Cold rolling material, laser welding (abnormal bead number evaluation, fusion penetration evaluation), formability are all good (zero).
It is 2.59 and also outside the scope of the present invention that the Mn contents of comparative example 1, which are up to 1.27 mass %, Mn/Fe ratios, though
Right fusion penetration is evaluated good (zero), but formability bad (×), abnormal bead number evaluate bad (×).
The Fe contents of comparative example 2 are up to 1.6 mass %, outside the scope of the present invention, although fusion penetration evaluates good (zero),
But formability bad (×), abnormal bead number evaluate bad (×).
Fe, Mn of comparative example 3~5 are few, outside the scope of the present invention, although formability good (zero), abnormal bead
Number is evaluated good (zero), but fusion penetration evaluates bad (×).
The Si contents of comparative example 6 are up to 0.5 mass %, outside the scope of the present invention, although fusion penetration evaluation good (zero),
Abnormal bead number evaluates good (zero), but formability is bad (×).
Show cold rolled annealed material evaluation result table 3 in embodiment 11~14 be composition the present invention composition model
Interior annealed material is enclosed, laser welding (abnormal bead number evaluation, fusion penetration evaluation), formability are all good (zero).
It is 2.59 and outside the scope of the present invention that the Mn contents of comparative example 11, which are up to 1.27 mass %, Mn/Fe ratios, although
Fusion penetration evaluates good (zero), formability well (zero), but abnormal bead number is evaluated as bad (×).
The Fe contents of comparative example 12 are up to 1.6 mass %, outside the scope of the present invention, although fusion penetration is evaluated good
(zero), but formability bad (×), abnormal bead number evaluate bad (×).
Fe, Mn of comparative example 13~15 are few, and outside the scope of the present invention, although formability good (zero), exception
Bead number is evaluated good (zero), but fusion penetration evaluates bad (×).
The Si contents of comparative example 16 are up to 0.5 mass %, outside the scope of the present invention, although fusion penetration is evaluated good
(zero), abnormal bead number evaluates good (zero), but formability is bad (×).
The measure of second phase particles number in metallographic
The longitudinal section (with LT direction vertical section) parallel with the rolling direction of the till soleplate of gained is cut out, by this vertical section
Face is embedded to thermoplastic resin and carries out mirror ultrafinish, observes metallographic.Photograph taking is carried out to microcosmic metallographic with light microscope (every
Area in 1 visual field is 0.0334mm2, 10 visuals field are shot to each sample) and the graphical analysis of photograph is carried out, determine every
The equivalent circle diameter of unit area is more than 5 μm of second phase particles number.By cold rolling material as the measure obtained by graphical analysis
As a result table 4 is shown in, cold rolled annealed plate is shown in table 5 as the measurement result obtained by graphical analysis.
[table 4]
Table 4：Second phase particles number (unit：Individual/mm2) (cold rolling material)
[table 5]
Table 5：Second phase particles number (unit：Individual/mm2) (cold rolled annealed material)
It can be seen from the table 4 for the evaluation result for showing cold rolling material, equivalent circle diameter in metallographic for more than 5 μm the
Secondary phase particle number is 500/mm2In the case of above (comparative example 2,6), in tension test, in thicker second phase particles
Interface between matrix is easily separated, so the value of elongation diminishes as less than 5%.
Therefore, it is known that in the present invention, in order that the value of elongation reaches more than 5%, it is necessary to make the circle equivalent in metallographic
A diameter of more than 5 μm of second phase particles number is less than 500/mm2。
It can be seen from the table 5 for the evaluation result for showing cold rolled annealed material, the equivalent circle diameter in metallographic is more than 5 μm
Second phase particles number be 500/mm2In the case of above (comparative example 12,16), in tension test, thicker second
Interface between phase particle and matrix is easily separated, therefore the value of elongation diminishes as less than 20%.
Therefore, it is known that in order that the value of elongation reaches more than 20%, it is necessary to make equivalent circle diameter in metallographic for 5 μm with
On second phase particles number be less than 500/mm2。
The possibility utilized in industry
It can be used for the high intensity of large-scale lithium ion battery container in accordance with the invention it is possible to provide and have, and have excellent formability,
Laser welding also excellent Al-Fe line aluminium alloy plates.
Claims (2)
1. the aluminium alloy plate for battery case of a kind of formability and welding property excellent, it is characterised in that
Its for more than 5% elongation value and more than 140MPa tensile strength cold rolling material,
And with following compositions composition：Fe containing 0.3~1.02 mass %, 0.3~1.0 mass % Mn, 0.002~0.20
Quality % Ti, 0.05~0.20 mass % Zr, 0.0005~0.10 mass % B, Mn/Fe mass ratio for 0.2~
1.0, remainder is made up of Al and impurity, as impurity, be Si respectively less than 0.30 mass %, Cu less than 0.20 mass %,
Mg is less than 0.20 mass %；
And it is than or equal to 40/mm with equivalent circle diameter for more than 5 μm of second phase particles number2And less than 500/mm2
Metallographic.
2. the aluminium alloy plate for battery case of a kind of formability and welding property excellent, it is characterised in that
It is the cold rolled annealed material of the value with more than 20% elongation,
And with following compositions composition：Fe containing 0.3~1.02 mass %, 0.3~1.0 mass % Mn, 0.002~0.20
Quality % Ti, 0.05~0.20 mass % Zr, 0.0005~0.10 mass % B, Mn/Fe mass ratio for 0.2~
1.0, remainder is made up of Al and impurity, as impurity, be Si respectively less than 0.30 mass %, Cu less than 0.20 mass %,
Mg is less than 0.20 mass %；
And it is than or equal to 13/mm with equivalent circle diameter for more than 5 μm of second phase particles number2And less than 500/mm2
Metallographic；
The cold rolled annealed material keeps enter within more than 1 hour using annealing furnace by implementing at a temperature of 400 DEG C~500 DEG C
The final annealing of row batch-type process is obtained.
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| JP2011-020900 | 2011-02-02 | ||
| JP2011020900 | 2011-02-02 | ||
| JP2011-106775 | 2011-05-12 | ||
| JP2011106775A JP5725344B2 (en) | 2011-02-02 | 2011-05-12 | Aluminum alloy sheet for battery cases with excellent formability and weldability |
| CN201180055947.7A CN103328667B (en) | 2011-02-02 | 2011-12-26 | Aluminum alloy sheet for battery case having good moldability and weldability |
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| CN201510362559.3A Active CN105112730B (en) | 2011-02-02 | 2011-12-26 | The aluminium alloy plate for battery case of formability and welding property excellent |
| CN201180055947.7A Active CN103328667B (en) | 2011-02-02 | 2011-12-26 | Aluminum alloy sheet for battery case having good moldability and weldability |
| CN201510266640.1A Active CN105039786B (en) | 2011-02-02 | 2011-12-26 | The aluminium alloy plate for battery case of formability and welding property excellent |
| CN201510364737.6A Active CN105063428B (en) | 2011-02-02 | 2011-12-26 | The aluminium alloy plate for battery case of formability and welding property excellent |
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| CN201510266640.1A Active CN105039786B (en) | 2011-02-02 | 2011-12-26 | The aluminium alloy plate for battery case of formability and welding property excellent |
| CN201510364737.6A Active CN105063428B (en) | 2011-02-02 | 2011-12-26 | The aluminium alloy plate for battery case of formability and welding property excellent |
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| JP5954099B2 (en) | 2012-10-12 | 2016-07-20 | 日本軽金属株式会社 | Aluminum alloy sheet for battery cases with excellent formability, heat dissipation and weldability |
| JP6033141B2 (en) | 2013-03-25 | 2016-11-30 | 株式会社神戸製鋼所 | Aluminum alloy plate for large rectangular battery case |
| JP5929855B2 (en) * | 2013-08-02 | 2016-06-08 | 日本軽金属株式会社 | Aluminum alloy sheet for battery cases with excellent formability, heat dissipation and weldability |
| JP6355098B2 (en) * | 2013-12-27 | 2018-07-11 | 三菱アルミニウム株式会社 | High formability aluminum alloy sheet with excellent thermal conductivity and method for producing the same |
| JP6456654B2 (en) * | 2014-10-21 | 2019-01-23 | 三菱アルミニウム株式会社 | Aluminum flexible foil and method for producing the same |
| KR101629664B1 (en) * | 2015-01-05 | 2016-06-21 | (주)케이에이치바텍 | Manufacturing method of metal case |
| CN105200270B (en) * | 2015-09-21 | 2017-05-24 | 聊城万合工业制造有限公司 | Aluminum alloy, flat micro-channel aluminum tubes, manufacturing method of flat micro-channel aluminum tubes and heat exchanger |
| CN105039797A (en) * | 2015-09-22 | 2015-11-11 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy strip capable of being used for mobile phone battery shell sealing plate |
| JP6087413B1 (en) * | 2015-11-05 | 2017-03-01 | 株式会社神戸製鋼所 | Aluminum alloy plate for automobile bus bar with excellent laser weldability |
| WO2017179636A1 (en) * | 2016-04-12 | 2017-10-19 | 大日本印刷株式会社 | Packaging material for batteries, method for producing same and battery |
| CN106521246B (en) * | 2016-10-10 | 2018-01-02 | 上海华峰新材料研发科技有限公司 | Material and its manufacture method for battery case aluminium alloy explosion-proof valve |
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| CN108559878B (en) * | 2018-03-08 | 2019-09-27 | 常州常发制冷科技有限公司 | Battery case aluminum alloy strip and preparation method thereof |
| JP6780679B2 (en) * | 2018-08-23 | 2020-11-04 | 日本軽金属株式会社 | Aluminum alloy plate for battery lid for integrated explosion-proof valve molding and its manufacturing method |
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| JP6614305B1 (en) * | 2018-09-21 | 2019-12-04 | 日本軽金属株式会社 | Aluminum alloy plate for battery lid for integral explosion-proof valve molding and manufacturing method thereof |
| KR20200038953A (en) | 2018-10-01 | 2020-04-14 | 니폰게이긴조쿠가부시키가이샤 | Aluminum alloy plate for battery cover for integral explosion-proof valve molding and its manufacturing method |
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| TW201235479A (en) | 2012-09-01 |
| TW201538742A (en) | 2015-10-16 |
| CN105112730A (en) | 2015-12-02 |
| TWI595097B (en) | 2017-08-11 |
| TW201514321A (en) | 2015-04-16 |
| WO2012105144A1 (en) | 2012-08-09 |
| CN103328667A (en) | 2013-09-25 |
| CN105063428B (en) | 2017-08-08 |
| CN105039786A (en) | 2015-11-11 |
| JP5725344B2 (en) | 2015-05-27 |
| JP2012177186A (en) | 2012-09-13 |
| CN103328667B (en) | 2015-07-22 |
| CN105112731B (en) | 2017-06-13 |
| KR20150111373A (en) | 2015-10-05 |
| CN105039786B (en) | 2017-08-22 |
| TWI516609B (en) | 2016-01-11 |
| KR20130122651A (en) | 2013-11-07 |
| CN105063428A (en) | 2015-11-18 |
| CN105112731A (en) | 2015-12-02 |
| TWI509082B (en) | 2015-11-21 |
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