CN102094159A - Method for manufacturing aluminum alloy strip for battery shell - Google Patents
Method for manufacturing aluminum alloy strip for battery shell Download PDFInfo
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- CN102094159A CN102094159A CN2010105924262A CN201010592426A CN102094159A CN 102094159 A CN102094159 A CN 102094159A CN 2010105924262 A CN2010105924262 A CN 2010105924262A CN 201010592426 A CN201010592426 A CN 201010592426A CN 102094159 A CN102094159 A CN 102094159A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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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Abstract
The invention discloses a method for manufacturing an aluminum alloy strip for a battery shell, which comprises the following steps of: 1) melting a grade 3003 alloy serving as a raw material, refining, deslagging, stirring and pouring; 2) sawing the head of an ingot blank, milling the surface of the ingot blank, and performing hot rolling on the ingot blank on a hot rolling machine to form a strip; 3) putting the hot-rolled strip into an annealing furnace and performing pre-annealing; 4) performing cold rolling on a cold rolling machine; 5) putting the cold-rolled strip into the annealing furnace and performing intermediate annealing; 6) manufacturing a strip with the thickness of 0.50 to 0.60mm on the cold rolling machine; and 7) performing stretch bending-straightening and precision cutting on the strip to obtain the aluminum alloy strip for the battery shell. The aluminum alloy strip for the battery shell has high stamping performance and low earing rate.
Description
Technical field
The present invention relates to a kind of processing technology of metallic substance, especially a kind of battery case manufacture method of aluminium alloy strips.
Background technology
In recent years, aluminium alloy strips is with its good comprehensive mechanical processing characteristics, good corrosion stability, light specific gravity, good performance of heat dissipation and powerful characteristics such as anti-electromagnetic interference performance, beginning progressively to replace original battery case with material-plastics PV and PVC material.Along with the fast development of industries such as China's cableless communication, industries such as battery of mobile phone will increase fast, and battery case uses the market outlook of aluminium alloy strips with boundless.Because battery case punch process deflection is big, the punching out operation is many, flushing technology is complicated, die design is accurate, and belongs to asymmetric punching press; Under the prerequisite that guarantees necessary plasticity, also enough intensity and hardness must be arranged, must have good erosion resistance, chemical stability and surface quality simultaneously.This kind material domestic production at present also can't be satisfied product requirement fully, has mass defects such as punching performance is poor, earing rate height.
Summary of the invention
Technical problem to be solved by this invention is at the deficiency of existing battery case with the aluminum alloy strip manufacture process, propose the manufacture method of a kind of battery case with aluminium alloy strips, this method has solved mass defects such as existing battery case is poor with the punching performance of aluminium alloy strips, earing rate height.
In order to solve above-mentioned technical problem, battery case of the present invention may further comprise the steps with the manufacture method of aluminium alloy strips:
1) 3003 trade mark alloy raw materials are joined respectively in the smelting furnace, melting, pouring into thickness after the refining, slagging-off, stirring is 480mm hot rolling ingot blank;
2) with ingot blank jagsaw head, mill the face post-heating to 490-510 ℃, be incubated and come out of the stove after 2-3 hour; On hot rolls, ingot blank is rolled into the thick band of 5.0-6.0mm;
3) hot rolled band is placed on carries out preannealing in the annealing furnace, annealing temperature is 590-610 ℃, and keeps taking out in 4-7 hour in this annealing temperature, is cooled to normal temperature;
4) hot rolled band that 5.0-6.0mm is thick is cold-rolled to certain thickness on cold-rolling mill, reserves the cold rolling working modulus of 24-34% according to finished product thickness;
5) cold-strip of this thickness is placed on carries out process annealing in the annealing furnace, annealing temperature is 440-480 ℃, and keeps taking out after 8-10 hour in this annealing temperature, is cooled to normal temperature;
6) on cold-rolling mill, the cold-strip of this thickness is rolled into the thick band of 0.50-0.60mm;
7) 0.50-0.60mm is thick band is promptly made battery case aluminium alloy strips of the present invention behind stretch-bending straightening, accurate-shearing.
For obtaining high dislocation desity, make recrystallize as much as possible at high density dislocation district forming core, a cube orientation core increases, annealing back cubic texture is strengthened, in step 2) course of hot rolling in, the last pass working modulus is 45-55%, finishing temperature is 390-450 ℃.
The invention has the beneficial effects as follows:
1) the battery case aluminium alloy strips mechanical property of the present invention's manufacturing: tensile strength is 150～160MPa, and the disproportional extension strength is 130～140MPa, and elongation after fracture is 3～4%.
2) product grains of the present invention be oriented to Gauss (cube) orientation 011}[100] and R be orientated 124}[211] the mixing texture of two kinds of orientations, goss texture (cubic texture) and R texture cause 0 °/90 ° and 45 ° of system ears respectively, the present invention is by optimizing hot rolling technology, annealing process and cold-rolling process, these two kinds of texture are existed simultaneously and reach balance, crystal structure is evenly tiny, grain orientation is evenly distributed, there is not obvious preferred orientation, the phenomenon that presents stochastic distribution, earing rate is not more than 3% in punching course, satisfies the deep-draw moulding requirement of battery case.
Embodiment
Embodiment 1
1) 3003 trade mark alloy raw materials are joined respectively in the smelting furnace, melting, pouring into thickness after the refining, slagging-off, stirring is 480mm hot rolling ingot blank.In castingprocesses, because speed of cooling is fast, add that the Mn atomic diffusivity is little, diffusion activation energy is big, most of Mn is present in α (Al) matrix with the form of supersaturated solid solution, a part forms continuous net-shaped eutectic with the form and the α (Al) of MnAl6 compound at crystal boundary, and other has a spot of MnAl6 to exist with thick hard crisp primary crystal.
2) with ingot blank jagsaw head, mill face post-heating to 500 ℃, be incubated and come out of the stove after 2.5 hours; On hot rolls, ingot blank is rolled into the thick band of 6.0mm.In course of hot rolling, the last pass working modulus is 55%, and finishing temperature is 420 ℃.Purpose is to obtain high dislocation desity, makes recrystallize as much as possible at high density dislocation district forming core, and a cube orientation core increases, and annealing back cubic texture is strengthened.
3) hot rolled band is placed on carries out preannealing in the annealing furnace, annealing temperature is 590 ℃, and hot rolled band keeps taking out in 7 hours to the temperature back, is cooled to normal temperature.Purpose is to make the nodularization of MnAl6 compound geomery, MnAl6 is partly dissolved mutually, it is slick and sly that sharp-pointed corner angle partly become, oversaturated α (Al) sosoloid decomposes, from matrix, separate out MnAl6 second phase that a large amount of disperses distribute, reduce the segregation of Mn atom, lay a solid foundation for the following process process obtains even tiny recrystallized structure.And help forming very strong cubic texture.
4) hot rolled band that 6.0mm is thick is cold-rolled to certain thickness on cold-rolling mill, reserves 34% cold rolling working modulus according to finished product thickness.Purpose is the intensity by the cold roller and deformed raising band of intensive, can produce a certain amount of rolling R texture simultaneously.
5) cold-strip of this thickness is placed on carries out process annealing in the annealing furnace, annealing temperature is 480 ℃, and band keeps taking out after 10 hours to temperature, is cooled to normal temperature.Purpose is size, homogeneity and the directivity of control material grain-size, suitably reduces intensity, improves plasticity, satisfies next step cold-rolling process demand; Increase the nucleation rate of cubic texture, weaken of the detrimentally affect of rolling R texture deep-draw system ear.
6) on cold-rolling mill, the cold-strip of this thickness is rolled into the thick band of 0.50mm with 34% cold rolling working modulus; Purpose is to produce hardening phenomenon by cold rolling machining deformation, guarantees final mechanical performance index, and rolling R texture and cubic texture reach balance simultaneously, guarantee the deep drawability of product.
7) with above-mentioned band behind stretch-bending straightening, accurate-shearing, promptly make battery case aluminium alloy strips of the present invention.
Embodiment 2
1) 3003 trade mark alloy raw materials are joined respectively in the smelting furnace, melting, pouring into thickness after the refining, slagging-off, stirring is 480mm hot rolling ingot blank.In castingprocesses, because speed of cooling is fast, add that the Mn atomic diffusivity is little, diffusion activation energy is big, most of Mn is present in α (Al) matrix with the form of supersaturated solid solution, a part forms continuous net-shaped eutectic with the form and the α (Al) of MnAl6 compound at crystal boundary, and other has a spot of MnAl6 to exist with thick hard crisp primary crystal.
2) with ingot blank jagsaw head, mill face post-heating to 510 ℃, be incubated and come out of the stove after 2 hours; On hot rolls, ingot blank is rolled into the thick band of 5.0mm.In course of hot rolling, the last pass working modulus is 45%, and finishing temperature is 450 ℃.Purpose is to obtain high dislocation desity, makes recrystallize as much as possible at high density dislocation district forming core, and a cube orientation core increases, and annealing back cubic texture is strengthened.
3) hot rolled band is placed on carries out preannealing in the annealing furnace, annealing temperature is 600 ℃, and hot rolled band keeps taking out in 6 hours to the temperature back, is cooled to normal temperature.Purpose is to make the nodularization of MnAl6 compound geomery, MnAl6 is partly dissolved mutually, it is slick and sly that sharp-pointed corner angle partly become, oversaturated α (Al) sosoloid decomposes, from matrix, separate out MnAl6 second phase that a large amount of disperses distribute, reduce the segregation of Mn atom, lay a solid foundation for the following process process obtains even tiny recrystallized structure.And help forming very strong cubic texture.
4) hot rolled band that 5.0mm is thick is cold-rolled to certain thickness on cold-rolling mill, reserves 24% cold rolling working modulus according to finished product thickness.Purpose is the intensity by the cold roller and deformed raising band of intensive, can produce a certain amount of rolling R texture simultaneously.
5) cold-strip of this thickness is placed on carries out process annealing in the annealing furnace, annealing temperature is 440 ℃, and band keeps taking out after 8 hours to temperature, is cooled to normal temperature.Purpose is size, homogeneity and the directivity of control material grain-size, suitably reduces intensity, improves plasticity, satisfies next step cold-rolling process demand; Increase the nucleation rate of cubic texture, weaken of the detrimentally affect of rolling R texture deep-draw system ear.
6) on cold-rolling mill, the cold-strip of this thickness is rolled into the thick band of 0.60mm with 24% cold rolling working modulus; Purpose is to produce hardening phenomenon by cold rolling machining deformation, guarantees final mechanical performance index, and rolling R texture and cubic texture reach balance simultaneously, guarantee the deep drawability of product.
7) with above-mentioned band behind stretch-bending straightening, accurate-shearing, promptly make battery case aluminium alloy strips of the present invention.
Embodiment 3
1) 3003 trade mark alloy raw materials are joined respectively in the smelting furnace, melting, pouring into thickness after the refining, slagging-off, stirring is 480mm hot rolling ingot blank.In castingprocesses, because speed of cooling is fast, add that the Mn atomic diffusivity is little, diffusion activation energy is big, most of Mn is present in α (Al) matrix with the form of supersaturated solid solution, a part forms continuous net-shaped eutectic with the form and the α (Al) of MnAl6 compound at crystal boundary, and other has a spot of MnAl6 to exist with thick hard crisp primary crystal.
2) with ingot blank jagsaw head, mill face post-heating to 490 ℃, be incubated and come out of the stove after 3 hours; On hot rolls, ingot blank is rolled into the thick band of 5.5mm.In course of hot rolling, the last pass working modulus is 50%, and finishing temperature is 390 ℃.Purpose is to obtain high dislocation desity, makes recrystallize as much as possible at high density dislocation district forming core, and a cube orientation core increases, and annealing back cubic texture is strengthened.
3) hot rolled band is placed on carries out preannealing in the annealing furnace, annealing temperature is 610 ℃, and hot rolled band keeps taking out in 4 hours to the temperature back, is cooled to normal temperature.Purpose is to make the nodularization of MnAl6 compound geomery, MnAl6 is partly dissolved mutually, it is slick and sly that sharp-pointed corner angle partly become, oversaturated α (Al) sosoloid decomposes, from matrix, separate out MnAl6 second phase that a large amount of disperses distribute, reduce the segregation of Mn atom, lay a solid foundation for the following process process obtains even tiny recrystallized structure.And help forming very strong cubic texture.
4) hot rolled band that 5.5mm is thick is cold-rolled to certain thickness on cold-rolling mill, reserves 30% cold rolling working modulus according to finished product thickness.Purpose is the intensity by the cold roller and deformed raising band of intensive, can produce a certain amount of rolling R texture simultaneously.
5) cold-strip of this thickness is placed on carries out process annealing in the annealing furnace, annealing temperature is 460 ℃, and band keeps taking out after 9 hours to temperature, is cooled to normal temperature.Purpose is size, homogeneity and the directivity of control material grain-size, suitably reduces intensity, improves plasticity, satisfies next step cold-rolling process demand; Increase the nucleation rate of cubic texture, weaken of the detrimentally affect of rolling R texture deep-draw system ear.
6) on cold-rolling mill, the cold-strip of this thickness is rolled into the thick band of 0.55mm with 30% cold rolling working modulus; Purpose is to produce hardening phenomenon by cold rolling machining deformation, guarantees final mechanical performance index, and rolling R texture and cubic texture reach balance simultaneously, guarantee the deep drawability of product.
7) with above-mentioned band behind stretch-bending straightening, accurate-shearing, promptly make battery case aluminium alloy strips of the present invention.
The foregoing description does not limit the present invention in any way, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in protection scope of the present invention.
Claims (2)
1. a battery case is characterized in that may further comprise the steps with the manufacture method of aluminium alloy strips:
1) 3003 trade mark alloy raw materials are joined respectively in the smelting furnace, melting, pouring into thickness after the refining, slagging-off, stirring is 480mm hot rolling ingot blank;
2) with ingot blank jagsaw head, mill the face post-heating to 490-510 ℃, be incubated and come out of the stove after 2-3 hour; On hot rolls, ingot blank is rolled into the thick band of 5.0-6.0mm;
3) hot rolled band is placed on carries out preannealing in the annealing furnace, annealing temperature is 590-610 ℃, and keeps taking out in 4-7 hour in this annealing temperature, is cooled to normal temperature;
4) hot rolled band that 5.0-6.0mm is thick is cold-rolled to certain thickness on cold-rolling mill, reserves the cold rolling working modulus of 24-34% according to finished product thickness;
5) cold-strip of this thickness is placed on carries out process annealing in the annealing furnace, annealing temperature is 440-480 ℃, and keeps taking out after 8-10 hour in this annealing temperature, is cooled to normal temperature;
6) on cold-rolling mill, the cold-strip of this thickness is rolled into the thick band of 0.50-0.60mm;
7) 0.50-0.60mm is thick band is promptly made battery case aluminium alloy strips of the present invention behind stretch-bending straightening, accurate-shearing.
2. a kind of battery case according to claim 1 is characterized in that: in described step 2 with the manufacture method of aluminium alloy strips) course of hot rolling in, the last pass working modulus is 45-55%, finishing temperature is 390-450 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105924262A CN102094159A (en) | 2010-12-17 | 2010-12-17 | Method for manufacturing aluminum alloy strip for battery shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105924262A CN102094159A (en) | 2010-12-17 | 2010-12-17 | Method for manufacturing aluminum alloy strip for battery shell |
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| CN102094159A true CN102094159A (en) | 2011-06-15 |
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| CN2010105924262A Pending CN102094159A (en) | 2010-12-17 | 2010-12-17 | Method for manufacturing aluminum alloy strip for battery shell |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489971A (en) * | 2011-12-21 | 2012-06-13 | 西南铝业（集团）有限责任公司 | Method for producing aluminum alloy plate |
| 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 |
| CN106119615A (en) * | 2016-08-17 | 2016-11-16 | 中铝瑞闽股份有限公司 | A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof |
| CN105525237B (en) * | 2016-01-29 | 2017-04-05 | 中北大学 | A kind of antidote of aluminum alloy thin plate casting residual deformation |
| CN112934980A (en) * | 2021-03-09 | 2021-06-11 | 中铝河南洛阳铝加工有限公司 | Processing method of 1050 aluminum alloy medicine cover material |
| CN114653904A (en) * | 2022-03-22 | 2022-06-24 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
Citations (3)
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|---|---|---|---|---|
| CN101144133A (en) * | 2007-10-23 | 2008-03-19 | 江苏常铝铝业股份有限公司 | Aluminum alloy band for jalousie and manufacturing method thereof |
| CN101186009A (en) * | 2007-12-20 | 2008-05-28 | 江苏常铝铝业股份有限公司 | Method for manufacturing composite aluminum foil for car heat exchanger |
| CN101709416A (en) * | 2009-11-30 | 2010-05-19 | 江苏常铝铝业股份有限公司 | Paper-making aluminum alloy strip and manufacturing method thereof |
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2010
- 2010-12-17 CN CN2010105924262A patent/CN102094159A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144133A (en) * | 2007-10-23 | 2008-03-19 | 江苏常铝铝业股份有限公司 | Aluminum alloy band for jalousie and manufacturing method thereof |
| CN101186009A (en) * | 2007-12-20 | 2008-05-28 | 江苏常铝铝业股份有限公司 | Method for manufacturing composite aluminum foil for car heat exchanger |
| CN101709416A (en) * | 2009-11-30 | 2010-05-19 | 江苏常铝铝业股份有限公司 | Paper-making aluminum alloy strip and manufacturing method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489971A (en) * | 2011-12-21 | 2012-06-13 | 西南铝业（集团）有限责任公司 | Method for producing aluminum alloy plate |
| 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 |
| CN105525237B (en) * | 2016-01-29 | 2017-04-05 | 中北大学 | A kind of antidote of aluminum alloy thin plate casting residual deformation |
| CN106119615A (en) * | 2016-08-17 | 2016-11-16 | 中铝瑞闽股份有限公司 | A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof |
| CN106119615B (en) * | 2016-08-17 | 2017-11-10 | 中铝瑞闽股份有限公司 | A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof |
| CN112934980A (en) * | 2021-03-09 | 2021-06-11 | 中铝河南洛阳铝加工有限公司 | Processing method of 1050 aluminum alloy medicine cover material |
| CN114653904A (en) * | 2022-03-22 | 2022-06-24 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
| CN114653904B (en) * | 2022-03-22 | 2024-01-12 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
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Application publication date: 20110615 |