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 PDF

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Publication number
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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CN
China
Prior art keywords
aluminium alloy
alloy strips
capacitor case
cold
preparation
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Pending
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CN201710420588.XA
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Chinese (zh)
Inventor
乔建博
廖明顺
阙石生
黄瑞银
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Chinalco Ruimin Co Ltd
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Chinalco Ruimin Co Ltd
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Priority to CN201710420588.XA priority Critical patent/CN107130146A/en
Publication of CN107130146A publication Critical patent/CN107130146A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

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

A kind of capacitor case aluminium alloy strips and preparation method thereof
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.
CN201710420588.XA 2017-06-07 2017-06-07 A kind of capacitor case aluminium alloy strips and preparation method thereof Pending CN107130146A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
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

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CN105624483A (en) * 2016-02-05 2016-06-01 中铝瑞闽股份有限公司 Moderate-strength aluminum alloy strip used for anodic oxidation and preparation method of moderate-strength aluminum alloy strip
CN106086532A (en) * 2016-06-20 2016-11-09 中铝瑞闽股份有限公司 A kind of capacitor case aluminium alloy strips and preparation method thereof
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
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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JP2007204793A (en) * 2006-01-31 2007-08-16 Furukawa Sky Kk Aluminum alloy sheet for can barrel body having excellent formability and can surface property and its production method
CN101054642A (en) * 2006-04-13 2007-10-17 深圳市比克电池有限公司 Aluminum alloy for preparing battery shell
CN103740990A (en) * 2014-01-10 2014-04-23 中铝瑞闽铝板带有限公司 Aluminum alloy strip for automobile heat insulation cover and manufacturing method thereof
CN105624483A (en) * 2016-02-05 2016-06-01 中铝瑞闽股份有限公司 Moderate-strength aluminum alloy strip used for anodic oxidation and preparation method of moderate-strength aluminum alloy strip
CN106086532A (en) * 2016-06-20 2016-11-09 中铝瑞闽股份有限公司 A kind of capacitor case aluminium alloy strips and preparation method thereof
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
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

Cited By (13)

* Cited by examiner, † Cited by third party
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
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

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