CN106119615B - A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof - Google Patents

A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof Download PDF

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Publication number
CN106119615B
CN106119615B CN201610678023.7A CN201610678023A CN106119615B CN 106119615 B CN106119615 B CN 106119615B CN 201610678023 A CN201610678023 A CN 201610678023A CN 106119615 B CN106119615 B CN 106119615B
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aluminium alloy
alloy strips
cold
preparation
new energy
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CN106119615A (en
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阙石生
乔建博
黄瑞银
罗筱雄
廖明顺
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Chinalco Ruimin Co Ltd
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Chinalco Ruimin Co Ltd
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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 new energy resource power battery shell aluminium alloy strips and preparation method thereof.The constituent of the aluminium alloy strips is:Si 0.1 ~ 0.4wt%, Fe 0.4 ~ 0.7wt%, Cu 0.06 ~ 0.14wt%, Mn 1.0 ~ 1.2wt%, Mg < 0.05wt%, Ti 0.01 ~ 0.03wt%, surplus Al.The present invention carries out optimizing components on the basis of 3003 alloys to aluminium alloy strips, and by homogenizing heat treatment, hot rolling technology, annealing process and the reasonable distribution of cold-rolling process, so that the aluminium alloy strips can meet good deep drawability, and can realizes good laser welding with cover plate, is preparation method that is a kind of not only economic but also easily promoting.

Description

A kind of new energy resource power battery shell 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 new energy resource power battery shell aluminum alloy strip Material and preparation method thereof.
Background technology
The punching process deflection of new energy resource power battery shell is big, punching passage is more, production process is complicated, to the comprehensive of material Close performance particularly deep drawability, laser weldability propose very high request, do not require nothing more than material have small thickness deviation, Good surface quality, while also need to the laser welding for having good plasticity, small yield tensile ratio, earing rate low and excellent Can be with the security during ensureing battery under arms.The material can not also fully meet product requirement at present, deep drawing quality be present Can be poor, earing rate is high, laser weldability difference the defects of.
The present invention carries out optimizing components on the basis of 3003 alloys, and by homogenizing heat treatment, hot rolling technology, annealing The reasonable distribution of technique and cold-rolling process so that the aluminium alloy strips can meet good deep drawability, and can and cover plate reality Now good laser welding, it is preparation method that is a kind of not only economic but also easily promoting.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of new energy resource power battery shell aluminum alloy strip Material and preparation method thereof.Aluminium alloy strips obtained by the present invention can meet good deep drawability, and and can is realized with cover plate Good laser welding, 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 new energy resource power battery shell aluminium alloy strips, its constituent are:Si 0.1 ~ 0.4wt%, Fe 0.4 ~ 0.7wt%, Cu 0.06 ~ 0.14wt%, Mn 1.0 ~ 1.2wt%, Mg < 0.05wt%, Ti 0.01 ~ 0.03wt%, surplus Al.
A kind of method for preparing new energy resource power battery shell 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 semicontinuous casting after line removes the gred degasification Cause aluminium alloy flat bloom;
(2)Slab ingot is heated to 580 ~ 600 DEG C and is incubated 4 ~ 10 hours, carry out homogenization heat treatment behind sawing, milling face;
(3)Then come out of the stove hot rolling, 2.0 ~ 8.0mm of hot rolled thickness, 280 ~ 360 DEG C of hot rolling finishing temperature;
(4)Hot rolled plate is rolled to certain thickness on cold-rolling mill, reserves 15% ~ 40% finished product cold processing ratio;
(5)Cold-strip is placed on annealing furnace and carries out intermediate annealing, 360 ~ 400 DEG C of annealing temperature, soaking time is according to volume Depending on weight;
(6)Continue in cold rolling mill to finished product thickness;
(7)Will be through step(6)The material of processing is cleaned, aligning, trimming, electrokinetic cell shell aluminium alloy strips are made.
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 120 ~ 170MPa, and yield strength reaches 110 ~ 160MPa, earing rate < 4%;Good deep drawability can be met, and can realizes good laser welding with cover plate;
2)The present invention carries out optimizing components on the basis of 3003 alloys to the band of aluminium alloy, and by homogenizing at heat Reason, hot rolling technology, the reasonable distribution of annealing process and cold-rolling process, greatly improve the performances of aluminium alloy strips so as to fit It is preparation method that is a kind of not only economic but also easily promoting for new energy resource power battery shell.
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 new energy resource power battery shell aluminium alloy strips, its constituent are:Si 0.1wt%, Fe 0.7wt%, Cu 0.06wt%, Mn 1.2wt%, Mg 0.04wt%, Ti 0.01wt%, surplus Al.
A kind of method for preparing new energy resource power battery shell 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 semicontinuous casting after line removes the gred degasification Cause aluminium alloy flat bloom;
(2)Slab ingot is heated to 580 DEG C and is incubated 10 hours, carry out homogenization heat treatment behind sawing, milling face;
(3)Then come out of the stove hot rolling, hot rolled thickness 2.0mm, 360 DEG C of hot rolling finishing temperature;
(4)Hot rolled plate is rolled to certain thickness on cold-rolling mill, reserves 15% finished product cold processing ratio;
(5)By cold-strip be placed on annealing furnace carry out intermediate annealing, 360 DEG C of annealing temperature, soaking time according to volume weight and It is fixed;
(6)Continue in cold rolling mill to finished product thickness;
(7)Will be through step(6)The material of processing is cleaned, aligning, trimming, electrokinetic cell shell aluminium alloy strips are made.
Tensile strength through aluminium alloy strips made from this method is 135MPa, and yield strength reaches 125MPa, earing rate For 2.5%.
Embodiment 2
A kind of new energy resource power battery shell aluminium alloy strips, its constituent are:Si 0.4wt%, Fe 0.4wt%, Cu 0.14wt%, Mn 1.0wt%, Mg 0.03wt%, Ti 0.03wt%, surplus Al.
A kind of method for preparing new energy resource power battery shell 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 semicontinuous casting after line removes the gred degasification Cause slab ingot;
(2)Slab ingot is heated to 600 DEG C and is incubated 4 hours, carry out homogenization heat treatment behind sawing, milling face;
(3)Then come out of the stove hot rolling, hot rolled thickness 8.0mm, 280 DEG C of hot rolling finishing temperature;
(4)Hot rolled plate is rolled to certain thickness on cold-rolling mill, reserves 25% finished product cold processing ratio;
(5)By cold-strip be placed on annealing furnace carry out intermediate annealing, 380 DEG C of annealing temperature, soaking time according to volume weight and It is fixed;
(6)Continue in cold rolling mill to finished product thickness;
(7)Will be through step(6)The material of processing is cleaned, aligning, trimming, electrokinetic cell shell aluminium alloy strips are made.
Tensile strength through aluminium alloy strips made from this method is 135MPa, and yield strength reaches 128MPa, earing rate For 2.0%.
Embodiment 3
A kind of new energy resource power battery shell aluminium alloy strips, its constituent are:Si 0.2wt%, Fe 0.6wt%, Cu 0.08wt%, Mn 1.1wt%, Mg 0.02wt%, Ti 0.02wt%, surplus Al.
A kind of method for preparing new energy resource power battery shell 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 semicontinuous casting after line removes the gred degasification Cause aluminium alloy flat bloom;
(2)Slab ingot is incubated 8 hours behind sawing, milling face, at 590 DEG C, carries out homogenization heat treatment;
(3)Then come out of the stove hot rolling, hot rolled thickness 5.0mm, 320 DEG C of hot rolling finishing temperature;
(4)Hot rolled plate is rolled to certain thickness on cold-rolling mill, reserves 40% finished product cold processing ratio;
(5)By cold-strip be placed on annealing furnace carry out intermediate annealing, 400 DEG C of annealing temperature, soaking time according to volume weight and It is fixed;
(6)Continue in cold rolling mill to finished product thickness;
(7)Will be through step(6)The material of processing is cleaned, aligning, trimming, electrokinetic cell shell aluminium alloy strips are made.
Tensile strength through aluminium alloy strips made from this method is 160MPa, and yield strength reaches 140MPa, earing rate For 1.5%.
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, it should all belong to the covering scope of the present invention.

Claims (1)

  1. A kind of 1. new energy resource power battery shell aluminium alloy strips, it is characterised in that:Its constituent is:0.1 ~ 0.4wt% of Si, Fe 0.4 ~ 0.7wt%, Cu 0.06 ~ 0.14wt%, Mn 1.0 ~ 1.2wt%, Mg < 0.01 ~ 0.03wt% of 0.05wt%, Ti, surplus For Al;
    Its preparation method concretely comprises 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 is heated to 580 ~ 600 DEG C and is incubated 4 ~ 10 hours, carry out homogenization heat treatment behind sawing, milling face;
    (3)Then come out of the stove hot rolling, 2.0 ~ 8.0mm of hot rolled thickness, 280 ~ 360 DEG C of hot rolling finishing temperature;
    (4)Hot rolled plate is rolled to certain thickness on cold-rolling mill, reserves 15% ~ 40% finished product cold processing ratio;
    (5)By cold-strip be placed on annealing furnace carry out intermediate annealing, 360 ~ 400 DEG C of annealing temperature, soaking time according to volume weight and It is fixed;
    (6)Continue in cold rolling mill to finished product thickness;
    (7)Will be through step(6)The material of processing is cleaned, aligning, trimming, electrokinetic cell shell aluminium alloy strips are made.
CN201610678023.7A 2016-08-17 2016-08-17 A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof Active CN106119615B (en)

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CN106591645B (en) * 2016-11-30 2018-04-27 中铝瑞闽股份有限公司 A kind of packaging for foodstuff irregular shaped can 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
CN106893906A (en) * 2017-01-20 2017-06-27 中铝瑞闽股份有限公司 A kind of 202 type easy open cover aluminium alloy strips and preparation method thereof
CN107130146A (en) * 2017-06-07 2017-09-05 中铝瑞闽股份有限公司 A kind of capacitor case aluminium alloy strips and preparation method thereof
CN107604212A (en) * 2017-09-12 2018-01-19 中铝瑞闽股份有限公司 Integrated battery cover board aluminium alloy strips and preparation method thereof
CN107739924B (en) * 2017-11-14 2019-07-12 中铝东南材料院(福建)科技有限公司 A kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method
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
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
CN111041283B (en) * 2019-12-19 2021-09-07 广西南南铝加工有限公司 Production method of 3003 aluminum alloy wafer for deep-drawing expansion type electric cooker liner

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