CN105624483B - A kind of moderate strength anodic oxidation aluminium alloy strips and preparation method thereof - Google Patents
A kind of moderate strength anodic oxidation aluminium alloy strips and preparation method thereof Download PDFInfo
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- CN105624483B CN105624483B CN201610081532.1A CN201610081532A CN105624483B CN 105624483 B CN105624483 B CN 105624483B CN 201610081532 A CN201610081532 A CN 201610081532A CN 105624483 B CN105624483 B CN 105624483B
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- aluminium alloy
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- anodic oxidation
- alloy strips
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
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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
- C22F1/047—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 of alloys with magnesium as the next major constituent
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention belongs to the preparation field of aluminium and aluminium alloy sheet and strip, and in particular to a kind of moderate strength anodic oxidation aluminium alloy strips and preparation method thereof.The composition of aluminium alloy strips is：The wt% of Cu 0.05 ~ 0.10wt%, Mg 2.0 ~ 3.0wt%, Si≤0.05wt%, Fe≤0.08 wt%, Mn≤0.05 wt%, Cr≤0.1 wt%, Ti≤0.05, Fe/Si=1 ~ 3, surplus Al.After dispensing, by cold rolling processing technology, yield strength is made and exceedes anode aluminum alloy sheets and strips highlighted after 180MPa, anode, is suitable for the appearance member of the products such as electronic apparatus, such as mobile phone and computer casing, application of the aluminium alloy strips in field of electronic devices is widened.
Description
Technical field
The invention belongs to the preparation field of aluminium and aluminium alloy sheet and strip, and in particular to a kind of moderate strength anodic oxidation is closed with aluminium
Gold ribbon material and preparation method thereof.
Background technology
Aluminium and aluminium alloy sheet and strip is widely used in making the various decorations such as lighting decoration controlled, electronic product casing, casket
Outward appearance and inside gadget.But anodic oxidation is one of " high, precision and frontier " product recognized within the industry with aluminium and aluminium alloy cold-strip,
Technological requirement is high, and quality control difficulty is big.
In the prior art, usual anode strap selects 5052 or 1050 with aluminium alloy strips, but intensity deficiency be present
It is partially dark with color and luster after anodic oxidation, and material line defect after thin sandblasting anode also be present.And as electronics industry is to frivolous, beautiful
The growth requirement of sight, disadvantages described above constrain development of the aluminium and aluminium alloy sheet and strip in electronics industry.Therefore, the present invention passes through to changing
The improvement studied point, coordinates corresponding cold rolling processing technology, produces yield strength more than the sun highlighted after 180 MPa, anode
Pole aluminum alloy sheets and strips.
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 moderate strength anodic oxidation aluminum alloy strip
Material and preparation method thereof.The aluminium alloy strips yield strength is more than 180 MPa, while surface is fine and smooth after anode, surface brightness pole
It is good, it can be widely used for the appearance member of the products such as electronic apparatus, such as mobile phone and computer casing.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of moderate strength anodic oxidation aluminium alloy strips, its composition are：Cu 0.05 ~ 0.10wt%, Mg 2.0 ~
The wt% of 3.0wt%, Si≤0.05wt%, Fe≤0.08 wt%, Mn≤0.05 wt%, Cr≤0.1 wt%, Ti≤0.05, Fe/Si=1
~ 3, surplus Al.
Described moderate strength anodic oxidation aluminium alloy strips, its yield strength >=180MPa.
A kind of method for preparing moderate strength anodic oxidation aluminium alloy strips as described above, comprises the following steps：
1）Aluminium ingot melts by smelting furnace, after dispensing, carries out semi-continuous casting；
2）Ingot casting enters heating furnace behind sawing, milling face, 480-580 DEG C of metal temperature, time 1-30h, then comes out of the stove
Hot rolling, hot rolling finishing temperature are 250-350 DEG C, hot rolled thickness 3.0-10.0mm；
3）Coiled material direct cold rolling after hot rolling cold rolling total reduction >=10%, then carries out finished products to finished product thickness,
150-300 DEG C of temperature, finished product；Or the coiled material after hot rolling passes through 10-70% cold rolling, then intermediate annealing is carried out, centre is moved back
Fiery temperature is 300-500 DEG C, soaking time 30s-4h, is then cold rolled to finished product thickness, and cold rolling reduction ratio is 10 ~ 80%, finally
By 150-300 DEG C of finished products, finished product.
Step 3）The surface roughness of obtained finished product is controlled within 0.3 μm of Ra.
The beneficial effects of the present invention are：
1）The present invention is coordinated corresponding cold rolling processing technology, produced by the improvement to aluminium alloy strips chemical composition
Yield strength is more than 180 MPa, the anode aluminum alloy sheets and strips that are highlighted after anode；
2）For the aluminium alloy strips of the present invention after anodic oxidation, surface color is fine and smooth bright, and yield strength is high, can
It is widely used in the appearance member of the products such as electronic apparatus, such as mobile phone and computer casing.
Embodiment
The present invention further illustrates the present invention with the following example, but protection scope of the present invention is not limited to following reality
Apply example.
Embodiment 1
A kind of anodic oxidation aluminium alloy strips, its composition are：Cu 0.05wt%, Mg 3.0wt%, Si 0.02wt%, Fe
0.06 wt%, Mn 0.05 wt%, Cr 0.1 wt%, Ti 0.05 wt%, surplus Al.
Preparation method, comprise the following steps：
1）Aluminium ingot melts by smelting furnace, after dispensing, carries out semi-continuous casting；
2）Ingot casting enters heating furnace, 520 DEG C, time 15h of metal temperature, hot rolling of then coming out of the stove, heat behind sawing, milling face
It is 300 DEG C to roll finishing temperature, hot rolled thickness 6.0mm；
3）Coiled material direct cold rolling after hot rolling cold rolling total reduction 20%, then carries out finished products, temperature to finished product thickness
200 DEG C of degree, finished product.
The yield strength of obtained aluminium alloy strips is 183 MPa, and surface roughness is 0.25 μm of Ra.
Embodiment 2
A kind of anodic oxidation aluminium alloy strips, its composition are：Cu 0.10wt%, Mg 2.0wt%, Si 0.05wt%, Fe
0.08 wt%, Mn 0.03 wt%, Cr 0.08 wt%, Ti 0.04 wt%, surplus Al.
Preparation method, comprise the following steps：
1）Aluminium ingot melts by smelting furnace, after dispensing, carries out semi-continuous casting；
2）Ingot casting enters heating furnace, 580 DEG C, time 1h of metal temperature, hot rolling of then coming out of the stove, heat behind sawing, milling face
It is 250 DEG C to roll finishing temperature, hot rolled thickness 10.0mm；
3）Coiled material after hot rolling passes through 40% cold rolling, then carries out intermediate annealing, and intermediate anneal temperature is 400 DEG C, during insulation
Between be 2h, be then cold rolled to finished product thickness, cold rolling reduction ratio is 20%, finally by 200 DEG C of finished products, finished product.
The yield strength of obtained aluminium alloy strips is 181 MPa, and surface roughness is 0.30 μm of Ra.
Embodiment 3
A kind of moderate strength anodic oxidation aluminium alloy strips, its composition are：Cu 0.07wt%, Mg 2.5wt%, Si
0.02wt%, Fe 0.08 wt%, Mn 0.03 wt%, Cr 0.1 wt%, Ti 0.02 wt%, surplus Al.
Preparation method, comprise the following steps：
1）Aluminium ingot melts by smelting furnace, after dispensing, carries out semi-continuous casting；
2）Ingot casting enters heating furnace, 480 DEG C, time 30h of metal temperature, hot rolling of then coming out of the stove, heat behind sawing, milling face
It is 350 DEG C to roll finishing temperature, hot rolled thickness 3.0mm；
3）Coiled material direct cold rolling after hot rolling cold rolling total reduction 50%, then carries out finished products, temperature to finished product thickness
150 DEG C of degree, finished product.
The yield strength of obtained aluminium alloy strips is 190 MPa, and surface roughness is 0.24 μm of Ra.
The anodic oxidation aluminium that the present invention designs is compared with tradition 5052, and it is in chemical composition and cold rolling processing technology
Improved, make same thickness product with identical close elongation percentage（Punching performance）While, have the surrender of superelevation strong
Degree, while surface is fine and smooth after anode, its surface brightness is splendid.
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 (3)
- A kind of 1. moderate strength anodic oxidation aluminium alloy strips, it is characterised in that：Its composition is：The .10wt% of .05 of Cu 0 ~ 0, The .1 wt% of .0 of Mg 2 ~ 3 .0wt%, Si≤0 .05wt%, Fe≤0 .08 wt%, Mn≤0 .05wt%, Cr≤0, The .05wt% of Ti≤0, Fe/Si=1 ~ 3, surplus Al；Yield strength >=180MPa.
- A kind of 2. method for preparing moderate strength anodic oxidation aluminium alloy strips as claimed in claim 1, it is characterised in that： Comprise the following steps：1）Aluminium ingot melts by smelting furnace, after dispensing, carries out semi-continuous casting；2）Ingot casting enters heating furnace behind sawing, milling face, 480-580 DEG C of metal temperature, time 1-30h, hot rolling of then coming out of the stove, Hot rolling finishing temperature is 250-350 DEG C, and hot rolled thickness is 3.0-10 .0mm；3）Coiled material direct cold rolling after hot rolling cold rolling total reduction >=10%, then carries out finished products, temperature to finished product thickness 150-300 DEG C, finished product；Or the coiled material after hot rolling passes through 10-70% cold rolling, then intermediate annealing is carried out, intermediate annealing temperature Spend for 300-500 DEG C, soaking time 30s-4h, be then cold rolled to finished product thickness, cold rolling reduction ratio is 10 ~ 80%, is finally passed through 150-300 DEG C of finished products, finished product.
- 3. preparation method according to claim 2, it is characterised in that：Step 3）The surface roughness control of obtained finished product System is within .3 μm of Ra 0.
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| JPH05271836A (en) * | 1992-03-30 | 1993-10-19 | Furukawa Alum Co Ltd | Aluminum alloy material excellent in strength and ductility and its production |
| CN100513058C (en) * | 2005-11-28 | 2009-07-15 | 镇江鼎胜铝业有限公司 | Aluminium strip for capacitor shell |
| JP5944862B2 (en) * | 2012-08-08 | 2016-07-05 | 株式会社Uacj | Aluminum alloy plate excellent in surface quality after anodizing treatment and manufacturing method thereof |
| WO2015022734A1 (en) * | 2013-08-13 | 2015-02-19 | 日本軽金属株式会社 | Aluminum alloy plate for high-strength alumite material and method for producing same, and aluminum alloy plate having high-strength alumite coating film attached thereto |
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