CN105525166B - A kind of anodic oxidation aluminium alloy strips and preparation method thereof - Google Patents
A kind of anodic oxidation aluminium alloy strips and preparation method thereof Download PDFInfo
- Publication number
- CN105525166B CN105525166B CN201610081533.6A CN201610081533A CN105525166B CN 105525166 B CN105525166 B CN 105525166B CN 201610081533 A CN201610081533 A CN 201610081533A CN 105525166 B CN105525166 B CN 105525166B
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- China
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- aluminium alloy
- anodic oxidation
- alloy strips
- cold rolling
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 31
- 230000003647 oxidation Effects 0.000 title claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005097 cold rolling Methods 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005098 hot rolling Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000000875 corresponding Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The invention belongs to the preparation field of aluminium and aluminium alloy sheet and strip, and in particular to a kind of anodic oxidation aluminium alloy strips and preparation method thereof.The component of aluminium alloy strips is：Cr 0.15 ~ 0.25wt%, Mg 2.5 ~ 3.5wt%, Si≤0.08wt%, Fe≤0.15wt%, Fe/Si=1 ~ 3, Cu≤0.05wt%, Mn≤0.05wt%, Ti≤0.05wt%；Surplus is aluminium.After dispensing, by cold rolling processing technology, yield strength is made and exceedes anode aluminum alloy sheets and strips highlighted after 200MPa, anode, is suitable for the appearance member of the products such as electronic apparatus, such as mobile phone and computer casing, have widened application of the aluminium alloy strips in field of electronic devices.
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 anodic oxidation aluminium alloy strips and
Its preparation method.
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
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 there are intensity deficiency
It is partially dark with color and luster after anodic oxidation, and also there are material line defect after thin sandblasting anode.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.For this reason, 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 200 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 anodic oxidation aluminium alloy strips and its system
Preparation Method.The aluminium alloy strips yield strength is more than 200 MPa, while anode rear surface is fine and smooth, and surface brightness is splendid, can be extensive
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 anodic oxidation aluminium alloy strips, its component are：Cr 0.15 ~ 0.25wt%, Mg 2.5 ~ 3.5wt%, Si≤
0.08wt%, Fe≤0.15wt%, Fe/Si=1 ~ 3, Cu≤0.05wt%, Mn≤0.05wt%, Ti≤0.05wt%；Surplus is Al.
The anodic oxidation aluminium alloy strips, its yield strength >=200MPa.
A kind of method for preparing 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, and 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）To finished product thickness, cold rolling total reduction >=10%, then carries out finished products for coiled material direct cold rolling after hot rolling,
150-300 DEG C of temperature, finished product；Or the coiled material after hot rolling passes through the cold rolling of 10-70%, 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, is produced by the improvement to aluminium alloy strips chemical composition
Yield strength is more than 200 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 component are：Cr 0.15wt%, Mg 2.5wt%, Si 0.08wt%, Fe
0.15wt%, Cu 0.05wt%, Mn 0.05wt%, Ti 0.05wt%；Surplus is Al.
Preparation method, comprises 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 is to finished product thickness, and cold rolling total reduction 20%, then carries out finished products, temperature
200 DEG C of degree, finished product.
The yield strength of obtained aluminium alloy strips is 200 MPa, and surface roughness is 0.28 μm of Ra.
Embodiment 2
A kind of anodic oxidation aluminium alloy strips, its component are：Cr 0.25wt%, Mg 3.5wt%, Si 0.05wt%, Fe
0.15wt%, Cu 0.02wt%, Mn 0.03wt%, Ti 0.03wt%；Surplus is Al.
Preparation method, comprises 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 210 MPa, and surface roughness is 0.23 μm of Ra.
Embodiment 3
A kind of anodic oxidation aluminium alloy strips, its component are：Cr 0.20wt%, Mg 3.0wt%, Si 0.075wt%, Fe
0.15wt%, Cu 0.04wt%, Mn 0.04wt%, Ti 0.04wt%；Surplus is Al.
Preparation method, comprises 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 is to finished product thickness, and cold rolling total reduction 50%, then carries out finished products, temperature
150 DEG C of degree, finished product.
The yield strength of obtained aluminium alloy strips is 200 MPa, and surface roughness is 0.25 μm of Ra.
The anodic oxidation aluminium that the present invention designs is compared with tradition 5052, it is in chemical composition and cold rolling processing technology
Improved, make same thickness product with identical close elongation percentage（Punching performance）While, the surrender with superelevation is strong
Degree, while anode rear surface is fine and smooth, its surface brightness is splendid.
The foregoing is merely 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 (3)
- A kind of 1. anodic oxidation aluminium alloy strips, it is characterised in that：Its component is：Cr 0 .15wt%, Mg 2 .5wt%, Si 0 .05wt% of 0 .08wt%, Fe 0 .15wt%, Cu 0 .05wt%, Mn 0 .05wt%, Ti；Surplus is Al；Or its component is：Cr 0 .25wt%, Mg 3 .5wt%, Si 0 .05wt%, Fe 0 .02wt% of 0 .15wt%, Cu, 0 .03wt% of Mn 0 .03wt%, Ti；Surplus is Al；Or its component is：：Cr 0 .20wt%, Mg 3 .0wt%, Si 0 .075wt%, Fe 0 .15wt%, Cu 0 .04wt%, 0 .04wt% of 0 .04wt% of Mn, Ti；Surplus is Al.
- A kind of 2. method for preparing anodic oxidation aluminium alloy strips as claimed in claim 1, it is characterised in that：Including following Step：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）For coiled material direct cold rolling after hot rolling to finished product thickness, cold rolling total reduction >=10%, then carries out finished products, temperature 150-300 DEG C, finished product；Or the coiled material after hot rolling passes through the cold rolling of 10-70%, 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 0 .3 μm of Ra.
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| CN107326311A (en) * | 2017-06-07 | 2017-11-07 | 中铝瑞闽股份有限公司 | A kind of control method of reduction Al Mg line aluminium alloy Strip yield tensile ratios |
| CN107794470B (en) * | 2017-11-18 | 2019-04-05 | 中铝瑞闽股份有限公司 | After a kind of anodization without heterochromatic defect 5 be aluminium plate cold rolling process |
| CN109161741B (en) * | 2018-11-27 | 2020-12-25 | 无锡市铝泰新材料股份有限公司 | Aluminum substrate with excellent high-temperature softening resistance and preparation method thereof |
| CN110756581A (en) * | 2019-10-24 | 2020-02-07 | 中铝瑞闽股份有限公司 | Hot rolling process of high-strength aluminum alloy for anodic oxidation |
| CN112122383A (en) * | 2020-08-26 | 2020-12-25 | 中铝瑞闽股份有限公司 | Preparation method of aluminum alloy plate strip for anodic oxidation of roughened surface |
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