CN106811633A - A kind of pack alloy and preparation method and application - Google Patents
A kind of pack alloy and preparation method and application Download PDFInfo
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- CN106811633A CN106811633A CN201510843723.2A CN201510843723A CN106811633A CN 106811633 A CN106811633 A CN 106811633A CN 201510843723 A CN201510843723 A CN 201510843723A CN 106811633 A CN106811633 A CN 106811633A
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Abstract
The invention discloses a kind of pack alloy, the aluminium alloy contains the Mn of 0.05-0.1%, the Mg of 0.5-3.6%, the Co of the Zr of the Zn of 0.1-3.2%, 0.08-0.15%, 0.5-2.5%, Si less than 0.05%, the Fe less than 0.05%, balance of Al and inevitable impurity element.The aluminium alloy has compression molding process functional and the characteristics of anodic oxidation excellent performance, is silvery white in color after its anodic oxidation, bright, uniform, and uniformity is good, and thickness reaches 15-25 μm.
Description
Technical field
The present invention relates to a kind of aluminium alloy, more particularly it relates to a kind of pack alloy and preparation method and application.
Background technology
Aluminium alloy is the alloy for adding other elements to constitute based on aluminium, and it has the advantages that, and proportion is small, intensity is high, corrosion-resistant, electrical and thermal conductivity is good, environmentally friendly, recoverable, as one of most commonly used material of daily use.In IT communication fields, it increasingly shows its application prospect as appearance member.Compared to stainless steel, aluminium alloy is slimmer and more graceful, and fusing point is low, is suitable for die cast, efficiency high, low cost, it is easy to reclaim, in addition, it is apparent after aluminium alloy anode oxide to keep beautiful metal-like gloss, feeling of high class is given, therefore, it is very suitable for the harsh product of the appearance requirements such as cell phone type.
But, it is the aluminium alloy for being with 7 that the aluminium alloy applied on electronic product at present is typically 6, and 6 is that can not carry out die casting with 7 line aluminium alloys, its general forming method is first punching press, then housing profile is formed by the processing of tens road CNC operations, anodic oxidation is finally carried out again, obtains that Al-alloy casing has metallic luster and appearance is preferable.But the CNC manufacturing procedures process in tens roads is complicated, and processing cost is higher, and raw material 6 be add with 7 line aluminium alloys it is also more expensive.In recent years, can the exploitation of die casting outward appearance aluminium alloy be always a focus, be also a difficult point, some technical bottlenecks fail to break through all the time.In terms of material, the processing performance of alloy and both anodic oxidation performances are contradictories, compression molding process aluminium alloy of good performance, often contain the elements such as Si, Fe higher, and these elements can be greatly reduced the transparency and glossiness of alloy anodized film, so that surface is intensely dark after alloy oxidation, gray.Therefore, it is technical problem urgently to be resolved hurrily to develop a kind of pack alloy for being suitable for anodic oxidation.
The content of the invention
The problem that the present invention can not have concurrently for current aluminium alloy compression casting performance and anodic oxidation performance, offer is a kind of to be more suitable for pack alloy of anodic oxidation and preparation method and application, not only there is good compression molding process performance, and its anodic oxidation excellent performance.
A kind of first purpose of the invention, there is provided pack alloy, by weight percentage, the aluminium alloy contains the Mn of 0.05-0.1%, and the Mg of 0.5-3.6% is, the Zn of 0.1-3.2%, the Co of the Zr of 0.08-0.15%, 0.5-2.5%, balance of Al and inevitable impurity element.
A kind of second object of the present invention, there is provided preparation method of pack alloy, the method includes for aluminium alloy stock carrying out melting, and aluminium alloy is obtained after cooling, wherein, the aluminium alloy that the composition of the aluminium alloy stock is obtained is aluminium alloy of the present invention.
Third object of the present invention, there is provided aluminium alloy of the present invention as electronic product casing application.
Pack alloy of the invention has compression molding process functional and the characteristics of anodic oxidation excellent performance, is silvery white in color after its anodic oxidation, bright, uniform, and uniformity is good, and thickness reaches 15-25 μm.
Additional aspect of the invention and advantage will be set forth in part in the description, and partly will become apparent from the description below, or be recognized by practice of the invention.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, with reference to embodiments, the present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Suitable by weight percentage the invention provides one kind, the aluminium alloy contains the Mn of 0.05-0.1%, and the Mg of 0.5-3.6% is, the Zn of 0.1-3.2%, the Zr of 0.08-0.15%, the Co of 0.5-2.5%, balance of Al and inevitable impurity element.
Further, by weight percentage, the aluminium alloy contains the Mn of 0.05-0.08%, the Mg of 1.0-3.0%, the Co of the Zr of the Zn of 0.3-2.4%, 0.08-0.1%, 0.8-2.0%, Si less than 0.03%, the Fe less than 0.03%, balance of Al and other inevitable impurity elements.
In the present invention, by weight percentage, the content of the individual element of the inevitable impurity element is less than 0.01%, and the total content of the inevitable impurity element is less than 0.1%.
The aluminium alloy that the present invention is provided adds alloy element Zn and Mg, and define Zn weight content be 0.1-3.2%, the weight content of Mg is 0.5-3.6%, Zn and Mg forms Zn-Mg tandem reinforcement phases in die casting, ensure that the intensity of die-cast product, meanwhile, the addition of Zn and Mg can't influence the glossiness and transparency of alloy anodized film, not interfere with alloy anode oxidized surface effect.
The present inventor has found that although Mn elements serve the effect of crystal grain thinning, solution strengthening, but he can influence the surface effect of anodic oxidation, i.e. Mn elements to cause the general brown of aluminium alloy anode oxide color by substantial amounts of experiment（Pink colour）.The present inventor has been surprisingly found that, Mn and Zr is used simultaneously, and the weight content for controlling Mn is 0.05-0.1%, the weight content of Zr acts synergistically for 0.08-0.15%, Mn and Zr, can not only play crystal grain thinning, improve the effect of alloy combination property, alloy hot cracking tendency is also reduced simultaneously, alloy die cast building-up property is improved, and the anodic oxidation effect of aluminium alloy is not influenceed.
Co elements are also added into the present invention, in aluminium alloy, it was found by the inventors of the present invention that adding Co elements in aluminium alloy and limiting the weight content of Co elements, alloy die cast mobility can be improved, eliminate the technological problemses such as sticking to mould and fire check during alloy die cast.
A kind of preparation method of pack alloy of the present invention, the method includes for aluminium alloy stock carrying out melting, and aluminium alloy is obtained after cooling, wherein, the aluminium alloy that the composition of the aluminium alloy stock is obtained is aluminium alloy of the present invention.
In preparation method of the present invention, specific preparation method is：After through burdening calculation, Al ingots, Al-Mn alloys are weighed according to quantity（10wt.%Mn）, Mg, Zn, Zr and Co, then Al ingots, Al-Mn alloys be put into smelting furnace be heated to whole fusings, add Co, interval 2 ~ 3min stirrings melt is once（Common stir about 15-20 times）, until Co is completely dissolved, then sequentially add after Zr, Mg, Zn submerge in melt and melt, stir 8-15 minutes, make composition uniform.Add 0.5% deslagging agent slagging-off, 0.5% refining agent refining degasification, after the completion of skim standing 25-40 minute, be then cooled to 710 DEG C or so start casting ingot.
In the present invention, in order to be further purified alloying component, it is preferable that use pure Al ingots, pure Mg, pure Zn, pure Zr and, pure Co and standard Al-Mn alloys（10wt.%Mn）.
In the present invention, after aluminium alloy ingots cooling, crushed it is blocking by be used for die casting, cast temperature is：200-260 DEG C of mould temperature, to 690-730 DEG C of soup temperature.
Present invention also offers described aluminium alloy as electronic product casing application.
Aluminium alloy of the invention has compression molding process functional and the characteristics of anodic oxidation excellent performance, is silvery white in color after its anodic oxidation, bright, uniform, and uniformity is good, and thickness reaches 15-25 μm.
The present invention is further detailed below by specific embodiment.
Embodiment
1
After through burdening calculation, each standard intermediate alloy and metal simple-substance being weighed in proportion, then pure Al ingots, standard Al-Mn alloys being put into smelting furnace and be heated to whole fusings, add pure Co, interval 3min stirrings melt is once（Common stir about 15-20 times）, until Co is completely dissolved, then sequentially add after pure Zr, pure Mg, pure Zn submerge in melt and melt, stir 8-15 minutes, make composition uniform.Add 0.5% deslagging agent slagging-off, 0.5% refining agent refining degasification, after the completion of skim standing 25-40 minute, be then cooled to 710 DEG C or so start casting ingot, obtain aluminium alloy ingots A1.Weigh each standard intermediate alloy and metal simple-substance part by weight such as table 1.
Embodiment
2
Method according to embodiment 1 prepares aluminium alloy ingots A2, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Embodiment
3
Method according to embodiment 1 prepares aluminium alloy ingots A3, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Embodiment
4
Method according to embodiment 1 prepares aluminium alloy ingots A4, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight table 1.
Embodiment
5
Method according to embodiment 1 prepares aluminium alloy ingots A5, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Comparative example
1
Method according to embodiment 1 prepares aluminium alloy ingots CA1, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Comparative example
2
Method according to embodiment 1 prepares aluminium alloy ingots CA2, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Comparative example
3
Method according to embodiment 1 prepares aluminium alloy ingots CA3, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Comparative example
4
Method according to embodiment 1 prepares aluminium alloy ingots CA4, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Comparative example
5
Method according to embodiment 1 prepares aluminium alloy ingots CA5, and difference is to weigh each standard intermediate alloy and metal simple-substance part by weight is shown in Table 1.
Table 1
。
Performance test
First, al alloy component can be tested
By aluminium alloy ingots A1-A5 and CA1-CA5 ICP spectrometers (companies：U.S.'s thermoelectricity, model：Thermo ICAP6300) its composition and content are tested, the results are shown in Table 2.
2nd, die casting performance test
Aluminium alloy ingots A1-A5 and CA1-CA5 are cooled down, then broken blocking for die casting, cast temperature is：250 DEG C of mould temperature, Al-alloy casing B1-B5 and CB1-CB5 are turned into the 720 DEG C of die casting of soup temperature.（Die casting equipment is mechanical stiffness scientific ＆ technical corporation, model DC160）Type, sticking to mould and fire check situation are filled in record press casting procedure, 3 are the results are shown in Table.
3rd, the performance test of anodic oxidation
Al-alloy casing B1-B5 and CB1-CB5 are carried out into following anodic oxidation respectively, anodic oxidation housing Y1-Y5 and CY1-CY5 is obtained.
Pre-treatment：Al-alloy casing B1-B5 and CB1-CB5 are put into grinding in polishing machine, cleaned with absolute ethyl alcohol afterwards, then Al alloy shell body is immersed in the sodium hydrate aqueous solution of 40g/L, taking-up is rinsed well with deionized water after 2min, is obtained by the Al alloy shell body of pre-treatment；
Anodic oxidation：The H containing 170g/L or so concentration is put into using above-mentioned Al-alloy casing as anode2SO4In anodizing tank, current density 1.4Adm-2, be electrolysed 30min at 19 DEG C, dry up, obtain anodic oxidation housing Y1-Y5 and CY1-CY5.
1st, the effect of anode oxide film
Y1-Y5 and CY1-CY5 are placed under natural light, the anode oxide film on its surface that detects by an unaided eye the results are shown in Table 3.
2nd, the thickness of anode oxide film
The thickness of the anode oxide film on Y1-Y5 and CY1-CY5 surfaces is tested with TIME2818 cladding thickness measurers, 3 are the results are shown in Table.
Table 2
。
Table 3
。
From table 3 it is observed that embodiment 1-5, press casting procedure fill type it is complete, without sticking to mould, without fire check, alloy shaping process is functional；Surface is silvery white in color after anodic oxidation, uniform color, vivid, oxide thickness more than 15 μm, aluminium alloy anode oxide excellent performance.
The alloy Mn constituent contents of comparative example 1 are too high, and alloy shaping process is functional, but the general light brown of alloy surface after anodic oxidation（Pink colour）, it is matt；Comparative example 2 and 3 is respectively Mg and Zn too high levels, and sticking to mould and fire check occurs in die-cast product, it is difficult to obtain complete exemplar, alloy shaping process hydraulic performance decline；The alloy Co contents of comparative example 4 are relatively low, alloy flowability reduction, and sticking to mould and fire check occurs in die casting, it is difficult to obtain complete exemplar, alloy die cast building-up property is remarkably decreased；Alloy Fe, Si too high levels of comparative example 5, alloy shaping process is functional, but alloy surface is in dark gray after anodic oxidation, matt.
In the description of this specification, the description of reference term " one embodiment ", " some embodiments ", " example ", " specific example " or " some examples " etc. means that the specific features, structure, material or the feature that are described with reference to the embodiment or example are contained at least one embodiment of the invention or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can in an appropriate manner be combined in one or more any embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：These embodiments can be carried out with various changes, modification, replacement and modification in the case where principle of the invention and objective is not departed from, the scope of the present invention is limited by claim and its equivalent.
Claims (5)
1. a kind of pack alloy, it is characterized in that, by weight percentage, the aluminium alloy contains the Mn of 0.05-0.1%, the Mg of 0.5-3.6%, the Zn of 0.1-3.2%, the Co of the Zr of 0.08-0.15%, 0.5-2.5%, the Si less than 0.05%, Fe less than 0.05%, balance of Al and inevitable impurity element.
2. according to pack alloy as claimed in claim 1, it is characterized in that, by weight percentage, the aluminium alloy contains the Mn of 0.05-0.08%, the Mg of 1.0-3.0%, the Zn of 0.3-2.4%, the Co of the Zr of 0.08-0.1%, 0.8-2.0%, the Si less than 0.03%, Fe less than 0.03%, balance of Al and other inevitable impurity elements.
3., according to pack alloy as claimed in claim 1 or 2, it is characterised in that by weight percentage, the content of the individual element of the inevitable impurity element is less than 0.01%, and the total content of the inevitable impurity element is less than 0.1%.
4. a kind of preparation method of pack alloy, the method includes for aluminium alloy stock carrying out melting, and aluminium alloy is obtained after cooling, wherein, the aluminium alloy that the composition of the aluminium alloy stock is obtained is the aluminium alloy described in any one in claim 1-3.
5. the aluminium alloy in claim 1-3 described in any one as electronic product casing application.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378879A (en) * | 2018-12-29 | 2020-07-07 | Oppo广东移动通信有限公司 | Aluminum alloy structural part and preparation method thereof, middle frame, battery cover and mobile terminal |
| CN112176234A (en) * | 2019-07-05 | 2021-01-05 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof, aluminum alloy structural member and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57163725A (en) * | 1979-09-28 | 1982-10-08 | Taiho Kogyo Co Ltd | Sliding bearing |
| JP2000087165A (en) * | 1998-09-08 | 2000-03-28 | Mitsubishi Alum Co Ltd | Aluminum alloy clad material for heat exchanger excellent in corrosion resistance |
| CN103328666A (en) * | 2010-10-29 | 2013-09-25 | 美铝公司 | Improved 5xxx aluminum alloys, and methods for producing the same |
-
2015
- 2015-11-27 CN CN201510843723.2A patent/CN106811633A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57163725A (en) * | 1979-09-28 | 1982-10-08 | Taiho Kogyo Co Ltd | Sliding bearing |
| JP2000087165A (en) * | 1998-09-08 | 2000-03-28 | Mitsubishi Alum Co Ltd | Aluminum alloy clad material for heat exchanger excellent in corrosion resistance |
| CN103328666A (en) * | 2010-10-29 | 2013-09-25 | 美铝公司 | Improved 5xxx aluminum alloys, and methods for producing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378879A (en) * | 2018-12-29 | 2020-07-07 | Oppo广东移动通信有限公司 | Aluminum alloy structural part and preparation method thereof, middle frame, battery cover and mobile terminal |
| CN111378879B (en) * | 2018-12-29 | 2021-05-07 | Oppo广东移动通信有限公司 | Aluminum alloy structural part and preparation method thereof, middle frame, battery cover and mobile terminal |
| CN112176234A (en) * | 2019-07-05 | 2021-01-05 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof, aluminum alloy structural member and electronic equipment |
| CN112176234B (en) * | 2019-07-05 | 2022-03-18 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof, aluminum alloy structural member and electronic equipment |
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Application publication date: 20170609 |