CN107130146A - A kind of capacitor case aluminium alloy strips and preparation method thereof - Google Patents
A kind of capacitor case aluminium alloy strips and preparation method thereof Download PDFInfo
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- CN107130146A CN107130146A CN201710420588.XA CN201710420588A CN107130146A CN 107130146 A CN107130146 A CN 107130146A CN 201710420588 A CN201710420588 A CN 201710420588A CN 107130146 A CN107130146 A CN 107130146A
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- aluminium alloy
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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
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- 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
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Abstract
The invention belongs to the preparation field of aluminium alloy strips, and in particular to a kind of capacitor case aluminium alloy strips and preparation method thereof.Al alloy component is：Si 0.2 ~ 0.3wt%, Fe 0.3 ~ 0.6wt%, Cu 0.06 ~ 0.20wt%, Mn 1.05 ~ 1.35wt%, Mg ＜ 0.01 ~ 0.03wt% of 0.05wt%, Ti, Fe/Si=2 ~ 4, Fe+Mn ＜ 1.95%, surplus is Al.After dispensing, by semi-continuous casting into aluminium alloy flat bloom, again after Overheating Treatment, heat bundle, cold-rolling process, obtain tensile strength and reach 155 ~ 165MPa, yield strength reaches 145 ~ 165MPa, earing rate ＜ 3% aluminium alloy strips, it can meet good deep drawability, and good laser welding can be realized again.
Description
Technical field
The invention belongs to the preparation field of aluminium alloy strips, and in particular to a kind of capacitor case aluminium alloy strips and its
Preparation method.
Background technology
The punching process deflection of capacitor case is big, punching passage is more, production process is complicated, and the combination property to material is special
It is that deep drawability proposes very high request, material is not required nothing more than has small thickness deviation, good surface quality, while also needing
There is good plasticity, small yield tensile ratio and low earing rate with the security during ensureing electric capacity under arms.
The present invention carries out optimizing components design to aluminium alloy strips, based on the control in terms of texture, compound and crystal grain
Technical research processed, realizes the good fitting of the strength of materials, plasticity and deep drawability so that the aluminium alloy strips can be met well
Deep drawability, be preparation method that is a kind of not only economic but also easily promoting.
By homogenizing Heat Treatment Control Al6The transformation of (Fe, Mn) opposite α-Al (Fe, Mn) Si phases, and necessarily to cool
The precipitation of speed control dispersion so that tissue is separated out fully, is evenly distributed；Increase the processing of each passage of hot rolling and total passage
Rate, is conducive to the broken of compound；By hot rolling finishing temperature and thickness, cold processing ratio, intermediate annealing technology controlling and process, make
Material cubic texture is obtained to be balanced with deformation texture.The final good fitting for realizing the strength of materials, plasticity and deep drawability, makes
Good deep drawability can be met by obtaining the aluminium alloy strips, be preparation method that is a kind of not only economic but also easily promoting.
The content of the invention
It is an object of the invention to exist for the existing material, deep drawability is poor, the high problem of earing rate provides a kind of electric capacity
Device shell aluminium alloy strips and preparation method thereof.Aluminium alloy strips obtained by the present invention can meet good deep drawing quality
Can, it is preparation method that is a kind of not only economic but also easily promoting.
To realize the purpose of the present invention, adopt the following technical scheme that：
A kind of capacitor case aluminium alloy strips, its raw material constituent is：Si 0.3 ~ 0.6wt% of 0.2 ~ 0.3wt%, Fe,
Cu 0.06 ~ 0.20wt%, Mn 1.05 ~ 1.35wt%, Mg ＜ 0.05wt%, Ti 0.01 ~ 0.03wt%, Fe/Si=2 ~ 4, Fe+Mn ＜
1.95%, surplus is Al.
A kind of method for preparing capacitor case aluminium alloy strips as described above, is concretely comprised the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, the later half company of online slagging-off degasification
It is continuous to be cast as aluminium alloy flat bloom；
（2）Slab ingot carries out 580 ~ 620 DEG C and is incubated 4 ~ 10 hours to carry out homogenization heat treatment behind sawing, milling face,
Then 510 DEG C of hot rolling start rolling temperature is cooled to 20 DEG C/h of speed；
（3）Then come out of the stove hot rolling, 2.5 ~ 8.0mm of hot rolled thickness, 320 ~ 360 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to 0.32mm ~ 1.6mm on cold-rolling mill, while ensureing cold processing ratio >=65%；
（5）Will be through step（4）Band after processing is placed on annealing furnace after over cleaning and carries out intermediate annealing, annealed metal temperature
340 ~ 400 DEG C, soaking time 1-8 hours；
（6）Aluminium after intermediate annealing is subjected to cold rolling, cold processing ratio 10-40%；
（7）Will be through step（6）The material of processing is cleaned, aligning, trimming, cut open bar, is finally made a kind of capacitor case aluminium
Alloy strip steel rolled stock.
The present invention has advantages below compared with the prior art：
1）The tensile strength of aluminium alloy strips obtained by the present invention reaches 155 ~ 165MPa, yield strength reaches 145 ~
165MPa, earing rate ＜ 3%；Good deep drawability can be met, good laser welding can be realized again；
2）The present invention carries out optimizing components design on the basis of 3003 alloys to aluminium alloy strips, by controlling Fe/Si ratios
With homogenization Heat Treatment Control Al6The transformation of (Fe, Mn) opposite α-Al (Fe, Mn) Si phases, and with the control of certain rate of temperature fall more
Dissipate the precipitation of thing so that tissue is separated out fully, is evenly distributed；Increase the working modulus of each passage of hot rolling and total passage, being conducive to
Compound it is broken；By hot rolling finishing temperature and thickness, cold processing ratio, finished products technology controlling and process so that cubic texture
It is balanced with deformation texture.The final good fitting for realizing the strength of materials, plasticity and deep drawability so that the aluminium alloy strips
Good deep drawability can be met, good laser welding can be realized again, is preparation side that is a kind of not only economic but also easily promoting
Method.
Embodiment
For the further open rather than limitation present invention, below in conjunction with example, the present invention is described in further detail.
Embodiment 1
A kind of capacitor case aluminium alloy strips, its raw material constituent is：Si 0.2wt%, Fe 0.58wt%, Cu
0.06wt%, Mn 1.05wt%, Mg 0.02wt%, Ti 0.01wt%, Fe/Si=2, Fe+Mn=1.63wt% surpluses are Al.
A kind of method for preparing capacitor case aluminium alloy strips as described above, is concretely comprised the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot carries out 580 DEG C and is incubated 4 hours to carry out homogenization heat treatment, then with 20 DEG C/h behind sawing, milling face
Speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 2.5mm, 320 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to interior thickness 0.46 on cold-rolling mill, while ensureing cold processing ratio >=80%；
（5）Will be through step（4）Band after processing is placed on annealing furnace after over cleaning and carries out intermediate annealing, annealed metal temperature
340 DEG C, soaking time 6 hours；
（6）Aluminium after intermediate annealing is subjected to cold rolling, cold processing ratio 37%；
（7）Will be through step（6）The material of processing is cleaned, aligning, trimming, cut open bar, is finally made a kind of 0.29mm thickness electric capacity
Device shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 157MPa, and yield strength reaches 150MPa, earing rate
For 1.1%.
Embodiment 2
A kind of capacitor case aluminium alloy strips, its raw material constituent is：Si 0.2wt%, Fe 0.32wt%, Cu
0.10wt%, Mn 1.10wt%, Mg 0.04wt%, Ti 0.02wt%, Fe/Si=2.5, Fe+Mn=1.42wt% surpluses are Al.
A kind of method for preparing capacitor case aluminium alloy strips as described above, is concretely comprised the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot carries out 600 DEG C and is incubated 8 hours to carry out homogenization heat treatment, then with 20 DEG C/h behind sawing, milling face
Speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 3.0mm, 340 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to interior thickness 0.51 on cold-rolling mill, while ensureing cold processing ratio >=70%；
（5）Will be through step（4）Band after processing is placed on annealing furnace after over cleaning and carries out intermediate annealing, annealed metal temperature
360 DEG C, soaking time 7 hours；
（6）Aluminium after intermediate annealing is subjected to cold rolling, cold processing ratio 36%；
（7）Will be through step（6）The material of processing is cleaned, aligning, trimming, cut open bar, is finally made a kind of capacitor case aluminium
Alloy strip steel rolled stock.
Tensile strength through aluminium alloy strips made from this method is 159MPa, and yield strength reaches 141MPa, earing rate
For 2.0%.
Embodiment 3
A kind of capacitor case aluminium alloy strips, its raw material constituent is：Si 0.25wt%, Fe 0.5wt%, Cu
0.086wt%, Mn 1.09wt%, Mg0.002wt%, Ti 0.028wt%, Fe/Si=2, Fe+Mn=1.59wt% surpluses are Al.
A kind of method for preparing capacitor case aluminium alloy strips as described above, is concretely comprised the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot carries out 610 DEG C and is incubated 6 hours to carry out homogenization heat treatment, then with 20 DEG C/h behind sawing, milling face
Speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 3.5mm, 330 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to interior thickness 0.64mm on cold-rolling mill, while ensureing cold processing ratio >=65%；
（5）Will be through step（4）Band after processing is placed on annealing furnace after over cleaning and carries out intermediate annealing, annealed metal temperature
380 DEG C, soaking time 7 hours；
（6）Aluminium after intermediate annealing is subjected to cold rolling, cold processing ratio 37%；
（7）Will be through step（6）The material of processing is cleaned, aligning, trimming, cut open bar, is finally made a kind of 0.405mm thickness electric capacity
Device shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 152MPa, and yield strength reaches 135MPa, earing rate
For 1.8%.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (4)
1. a kind of capacitor case aluminium alloy strips, it is characterised in that：Its material composition is：Si 0.2 ~ 0.3wt%, Fe 0.3
~ 0.6wt%, Cu 0.06 ~ 0.20wt%, Mn 1.05 ~ 1.35wt%, Mg ＜ 0.01 ~ 0.03wt% of 0.05wt%, Ti, Fe/Si=2 ~
4, Fe+Mn ＜ 1.95%, surplus is Al.
2. a kind of prepare a kind of method of capacitor case aluminium alloy strips as claimed in claim 1, it is characterised in that：Tool
Body step is：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, the later half company of online slagging-off degasification
It is continuous to be cast as aluminium alloy flat bloom；
（2）Slab ingot carries out 580 ~ 620 DEG C and is incubated 4 ~ 10 hours to carry out homogenization heat treatment behind sawing, milling face,
Then it is cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, 2.5 ~ 8.0mm of hot rolled thickness, 320 ~ 360 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to 0.32 ~ 1.6mm of interior thickness on cold-rolling mill, while ensureing cold processing ratio >=65%；
（5）Will be through step（4）Band after processing is placed on annealing furnace after over cleaning and carries out intermediate annealing；
（6）Aluminium after intermediate annealing is subjected to cold rolling, cold processing ratio 10-40%；
（7）Will be through step（6）The material of processing is cleaned, aligning, trimming, cut open bar, is finally made a kind of capacitor case aluminium
Alloy strip steel rolled stock.
3. a kind of preparation method of capacitor case aluminium alloy strips according to claim 2, it is characterised in that：Step
（2）In rate of temperature fall be 20 DEG C/h.
4. a kind of preparation method of capacitor case aluminium alloy strips according to claim 2, it is characterised in that：Step
（5）340 ~ 400 DEG C of the annealed metal temperature of intermediate annealing, soaking time 1-8 hours.
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| CN201710420588.XA CN107130146A (en) | 2017-06-07 | 2017-06-07 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
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|---|---|---|---|
| CN201710420588.XA CN107130146A (en) | 2017-06-07 | 2017-06-07 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937763A (en) * | 2017-11-21 | 2018-04-20 | 苏州胜禹材料科技股份有限公司 | Aluminium alloy electronic package material and preparation method thereof |
| CN109097636A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | A kind of baking utensil aluminium alloy and preparation method thereof |
| CN109097637A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | The preparation method of one bulb kettle type pot gallbladder aluminum alloy materials |
| CN109402462A (en) * | 2018-12-28 | 2019-03-01 | 中铝瑞闽股份有限公司 | A kind of low earing rate aluminium strip for capacitor shell and preparation method thereof |
| CN109972001A (en) * | 2019-03-29 | 2019-07-05 | 郑州明泰实业有限公司 | A kind of capacitor case 1100-O state aluminium alloy strips and its production method |
| CN110453110A (en) * | 2019-09-03 | 2019-11-15 | 南通恒金复合材料有限公司 | A kind of housing of power cell aluminium alloy strips and preparation method thereof |
| CN110983117A (en) * | 2019-12-27 | 2020-04-10 | 江门市德佑金属材料实业有限公司 | Aluminum alloy for capacitor shell and preparation method of aluminum alloy plate strip of aluminum alloy |
| CN111270113A (en) * | 2020-03-27 | 2020-06-12 | 天津忠旺铝业有限公司 | Production process of 5052 aluminum alloy plate with low earing rate |
| CN111850353A (en) * | 2020-07-15 | 2020-10-30 | 江苏鼎胜新能源材料股份有限公司 | 5G novel aluminum strip for capacitor shell and preparation method thereof |
| CN112831692A (en) * | 2020-12-28 | 2021-05-25 | 浙江永杰铝业有限公司 | Aluminum-manganese alloy strip and preparation method thereof |
| CN114669964A (en) * | 2022-03-28 | 2022-06-28 | 中铝瑞闽股份有限公司 | Short-process production method of new energy power battery shell cover plate strip |
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| CN106636775A (en) * | 2016-12-20 | 2017-05-10 | 中铝瑞闽股份有限公司 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937763A (en) * | 2017-11-21 | 2018-04-20 | 苏州胜禹材料科技股份有限公司 | Aluminium alloy electronic package material and preparation method thereof |
| CN109097636A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | A kind of baking utensil aluminium alloy and preparation method thereof |
| CN109097637A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | The preparation method of one bulb kettle type pot gallbladder aluminum alloy materials |
| CN109402462A (en) * | 2018-12-28 | 2019-03-01 | 中铝瑞闽股份有限公司 | A kind of low earing rate aluminium strip for capacitor shell and preparation method thereof |
| CN109972001B (en) * | 2019-03-29 | 2020-12-04 | 郑州明泰实业有限公司 | 1100-O state aluminum alloy strip for capacitor shell and production method thereof |
| CN109972001A (en) * | 2019-03-29 | 2019-07-05 | 郑州明泰实业有限公司 | A kind of capacitor case 1100-O state aluminium alloy strips and its production method |
| CN110453110A (en) * | 2019-09-03 | 2019-11-15 | 南通恒金复合材料有限公司 | A kind of housing of power cell aluminium alloy strips and preparation method thereof |
| CN114752821A (en) * | 2019-09-03 | 2022-07-15 | 南通恒金复合材料有限公司 | Aluminum alloy strip for power battery shell and preparation method thereof |
| CN110983117A (en) * | 2019-12-27 | 2020-04-10 | 江门市德佑金属材料实业有限公司 | Aluminum alloy for capacitor shell and preparation method of aluminum alloy plate strip of aluminum alloy |
| CN111270113A (en) * | 2020-03-27 | 2020-06-12 | 天津忠旺铝业有限公司 | Production process of 5052 aluminum alloy plate with low earing rate |
| CN111270113B (en) * | 2020-03-27 | 2021-05-28 | 天津忠旺铝业有限公司 | Production process of 5052 aluminum alloy plate with low earing rate |
| CN111850353A (en) * | 2020-07-15 | 2020-10-30 | 江苏鼎胜新能源材料股份有限公司 | 5G novel aluminum strip for capacitor shell and preparation method thereof |
| CN111850353B (en) * | 2020-07-15 | 2021-09-28 | 江苏鼎胜新能源材料股份有限公司 | 5G novel aluminum strip for capacitor shell and preparation method thereof |
| CN112831692A (en) * | 2020-12-28 | 2021-05-25 | 浙江永杰铝业有限公司 | Aluminum-manganese alloy strip and preparation method thereof |
| CN114669964A (en) * | 2022-03-28 | 2022-06-28 | 中铝瑞闽股份有限公司 | Short-process production method of new energy power battery shell cover plate strip |
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