CN110106408A - High tough aluminum alloy materials of plate die casting and preparation method thereof in a kind of mobile phone - Google Patents
High tough aluminum alloy materials of plate die casting and preparation method thereof in a kind of mobile phone Download PDFInfo
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- CN110106408A CN110106408A CN201910490280.1A CN201910490280A CN110106408A CN 110106408 A CN110106408 A CN 110106408A CN 201910490280 A CN201910490280 A CN 201910490280A CN 110106408 A CN110106408 A CN 110106408A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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Abstract
The invention discloses a kind of high tough aluminum alloy materials of plate die casting in mobile phone, the chemical component composition of alloy material includes: the content 9.0-14.0wt.% of Zn, the content of Si is 8.0-10.0wt.%, the content of Cu is 2.6-4.2wt.%, and the content of Mg is 0.1-0.3wt.%, and the content of Mn is 0.2-0.5wt.%, the content of Fe is 0.5-0.8wt.%, the content of Sr is 0.01~0.05%, and impurity content≤0.15%, remaining is aluminium.
Description
Technical field
The present invention relates to metal material field, more particularly, to a kind of high tough aluminum alloy materials of plate die casting in mobile phone and
Preparation method.
Background technique
Currently, material used by plate mainly includes aluminium alloy, magnesium alloy, stainless steel in mobile phone both at home and abroad.From apple public affairs
Department since enabling plate in aluminium alloy the 5th generation mobile phone, including Huawei, millet, in the well-known cellular telephone companies such as emerging, OPPO it is extensive
Plate in universal aluminium alloy, becomes the first choice of plate and back veneer material in mobile phone in recent years.Plate mainly uses CNC method and pressure in aluminium alloy
Casting production, the former material are the wrought aluminium alloy of 7XXX and 6XXX, and plate has light weight, intensity higher in the mobile phone of preparation
The advantages that, but production efficiency is lower, higher cost, is chiefly used in middle and high end smart phone.The common aluminum alloy materials of casting die are
ADC12, middle plate have many advantages, such as high production efficiency, at low cost, but intensity, toughness is not as good as wrought aluminium alloy, and can not carry out oxygen
Change coloring treatment, is chiefly used in low and middle-end smart phone.With the emergence of 3D glass and ceramic cover plate, the various aspects such as centering plate intensity
Higher and higher, the traditional middle plate die-casting material of requirement, as to be unable to satisfy smart phone centering plate high for ADC12, AZ91 alloy
The requirement of intensity, high rigidity, it would be highly desirable to solve.
Currently, high-toughness casting aluminum alloy mainly includes Al-Cu system, Al-Mg system, Al-Si-Cu system and Al-Zn system.Wherein
The alloy strength highest of Al-Cu system, such as ZL205A, intensity can reach 520MPa or more, elongation up to 13.0% or more, but
Such alloy hot cracking tendency is big, casting forming function and corrosion resisting property are bad；Using Zl301 as the Al-Mg alloy highest of representative
Intensity is up to 440MPa, 15% or more elongation, but its crackle tendency, oxide slag inclusion problem can not solve；Using ZL107 as representative
Al-Si-Cu system alloy has good cast form and corrosion resisting property, but intensity, plasticity are lower；It is with ZL402 alloy
The Al-Zn alloy of representative has good casting character, cutting ability and dimensional stability, has well from quenching property, i.e.,
It can reach very high intensity when as cast condition, but generate decrepitation than more serious.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of high tough aluminum alloy materials of plate die casting in mobile phone and its preparation sides
Method, which combines that Al-Si series casting character is excellent and Al-Zn is from strengthening and high strength characteristics, has casting fluidity energy
Well, intensity is high, is not necessarily to heat treatment reinforcement, especially suitable for die cast, is also applied for casting in gravitational casting, low pressure casting etc.
Technique, can be used for communicating, automobile industry is complex-shaped and the components more demanding to obdurability, before having good application
Scape.
4, the high tough aluminum alloy materials of plate die casting in a kind of mobile phone, according to weight ratio meter, the chemical component of alloy material
Composition includes: that the content of the content 9.0-14.0wt.%, Si of Zn is 8.0-10.0wt.%, and the content of Cu is 2.6-
The content of 4.2wt.%, Mg are 0.1-0.3wt.%, and the content of Mn is 0.2-0.5wt.%, and the content of Fe is 0.5-
The content of 0.8wt.%, Sr are 0.01~0.05%, and impurity content≤0.15%, remaining is aluminium.
Further, affiliated other impurity elements include one or more of following element: Cr, Ni, Ti, Na.A kind of hand
The preparation method of the high tough aluminum alloy materials of plate die casting in machine, comprising the following steps:
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 730-760 DEG C, after aluminium ingot all fusing, by ready metal Si or
Among Al-Si intermediate alloy, red copper or Al-Cu intermediate alloy, electrolytic manganese or Al-Mn intermediate alloy, Zn ingot, Mg ingot and Al-Fe
Alloy is added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 700-720 DEG C of heat preservation, using high purity inert gas conduct
Carrier sprays into refining agent in melt, and degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-10Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
It (5) will be equipped with the mold on 30-50cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
It is preheated to 150-200 DEG C, and starts chain type ingot casting machine and molten aluminum distribution drum, smelting furnace chock plug is extracted, casts and high tough die casting is made
Aluminium alloy cast ingot.
Technical effect of the invention:
Al-Zn-Si-Cu-Fe-Mn-Mg-Sr alloy of the invention combines the excellent casting of Al-Si system cast aluminium alloy gold
Performance and Al-Zn system it is high-strength, from reinforcing property, not only can ensure that alloy possessed good mobility and casting character, but also can guarantee
The high-strength tenacity of alloy.Containing three kinds of aluminium alloy ageing strengthening elements such as Zn, Cu, Mg in alloy, MgZn can be formed2、
Al2Mg3Zn3、Al2Cu、Al2The hardening constituents such as CuMg, greatly improve alloy strength；It is good that higher Zn content not only has alloy
From quenching property, ensured the high intensity of cast alloy, while improving the maxima solubility of Cu element, dropped low-alloyed heat
Split tendency；The Fe element of high level can reduce mold sticking in alloy, improve die life；On the one hand Mn element improves rich iron
On the other hand the form of phase can inhibit crystal grain and grow up, to improve alloy plasticity；The main function of Sr element is refinement in alloy
Crystal grain improves the toughness of alloy.Therefore, aluminum alloy materials of the invention not only have good casting character and from hardenabilities
Can, also have many advantages, such as high intensity, high tenacity, room temperature tensile intensity 300-360MPa, yield strength 240-290MPa, elongation percentage
2.5-5.0%, hardness 100-130HV, particularly suitable for die-casting process.
Specific embodiment
The present invention is further explained in the light of specific embodiments, so that those skilled in the art can be preferably
Understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1:
For being matched according to Al-11.0Zn-9.5Si-2.8Cu-0.6Fe-0.4Mn-0.15Mg-0.015Sr, calculate
The quality of raw material needed for 25t alloy, stocks up.
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 740 DEG C, after aluminium ingot all fusing after, by ready metal Si, red copper,
Electrolytic manganese, Zn ingot, Mg ingot and Al-Fe intermediate alloy are added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 710 DEG C of heat preservations, using high purity inert gas as carrier
Refining agent is sprayed into melt, degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
It (5) will be pre- equipped with the mold on 30cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
Heat starts chain type ingot casting machine and molten aluminum distribution drum to 180 DEG C, extracts smelting furnace chock plug, starts to cast, high tough die casting aluminium is made
Alloy cast ingot.
(6) chemical composition and mechanical property of beta alloy ingot observes alloy microstructure.
Embodiment 2:
For matching according to Al-13.5Zn-8.5Si-3.5Cu-0.6Fe-0.3Mn-0.2Mg-0.03Sr, 25t is calculated
The quality of raw material needed for alloy, stocks up.
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 760 DEG C, after aluminium ingot all fusing, will closed among ready Al-Si
Gold, Al-Cu intermediate alloy, Al-Mn intermediate alloy, Zn ingot, Mg ingot and Al-Fe intermediate alloy are added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 720 DEG C of heat preservations, using high purity inert gas as carrier
Refining agent is sprayed into melt, degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
It (5) will be pre- equipped with the mold on 40cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
Heat starts chain type ingot casting machine and molten aluminum distribution drum to 200 DEG C, extracts smelting furnace chock plug, casts and high tough pack alloy is made
Ingot casting.
(6) chemical composition and mechanical property of beta alloy ingot observes alloy microstructure.
Embodiment 3:
For being matched according to Al-9.5Zn-9.0Si-4.0Cu-0.75Fe-0.2Mn-0.15Mg-0.015Sr, calculate
The quality of raw material needed for 25t alloy, stocks up.
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 730 DEG C, after aluminium ingot all fusing, by ready metal Si, Al-Cu
Intermediate alloy, Al-Mn intermediate alloy, Zn ingot, Mg ingot and Al-Fe intermediate alloy are added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 700 DEG C of heat preservations, using high purity inert gas as carrier
Refining agent is sprayed into melt, degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
It (5) will be pre- equipped with the mold on 50cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
Heat starts chain type ingot casting machine and molten aluminum distribution drum to 150 DEG C, extracts smelting furnace chock plug, casts and high tough pack alloy is made
Ingot casting.
(6) chemical composition and mechanical property of beta alloy ingot observes alloy microstructure.
Embodiment 4:
For matching according to Al-10.0Zn-8.0Si-3.0Cu-0.5Fe-0.4Mn-0.3Mg-0.05Sr, 25t is calculated
The quality of raw material needed for alloy, stocks up.
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 750 DEG C, after aluminium ingot all fusing, will closed among ready Al-Si
Gold, red copper, electrolytic manganese, Zn ingot, Mg ingot and Al-Fe intermediate alloy are added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 710 DEG C of heat preservations, using high purity inert gas as carrier
Refining agent is sprayed into melt, degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
It (5) will be pre- equipped with the mold on 400cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
Heat starts chain type ingot casting machine and molten aluminum distribution drum to 160 DEG C, extracts smelting furnace chock plug, casts and high tough pack alloy is made
Ingot casting.
(6) chemical composition and mechanical property of beta alloy ingot observes alloy microstructure.
The chemical component comparison of Examples 1 to 4 aluminium alloy is shown in Table 1.
The chemical component (wt.%) of aluminium alloy in 1 Examples 1 to 4 of table
| Embodiment | Zn | Si | Cu | Fe | Mn | Mg | Sr | Impurity element | Al |
| 1 | 11.19 | 9.59 | 2.88 | 0.62 | 0.41 | 0.09 | 0.011 | 0.12 | Surplus |
| 2 | 13.69 | 8.48 | 3.30 | 0.60 | 0.32 | 0.17 | 0.026 | 0.11 | Surplus |
| 3 | 9.38 | 9.05 | 4.03 | 0.77 | 0.22 | 0.15 | 0.014 | 0.13 | Surplus |
| 4 | 10.1 | 8.06 | 3.06 | 0.53 | 0.33 | 0.26 | 0.045 | 0.14 | Surplus |
In embodiment 1-4, other impurity elements may is that Cr, Ni, Ti, Na.
The chemical component comparison of Examples 1 to 4 aluminium alloy is shown in Table 2.
The mechanical property of aluminium alloy in 2 Examples 1 to 4 of table
In above-described embodiment, Zn content is higher, and yield strength, tensile strength and microhardness are also higher, and Fe content is got over
Height, plasticity are lower.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (3)
1. the high tough aluminum alloy materials of plate die casting in a kind of mobile phone, which is characterized in that according to weight ratio meter, aluminum alloy materials
Chemical component composition includes: that the content of the content 9.0-14.0wt.%, Si of Zn is 8.0-10.0wt.%, and the content of Cu is 2.6-
The content of 4.2wt.%, Mg are 0.1-0.3wt.%, and the content of Mn is 0.2-0.5wt.%, and the content of Fe is 0.5-
The content of 0.8wt.%, Sr are 0.01~0.05%, and impurity content≤0.15%, remaining is aluminium.
2. the high tough aluminum alloy materials of plate die casting in mobile phone according to claim 1, which is characterized in that affiliated other miscellaneous
Prime element includes one or more of following element: Cr, Ni, Ti, Na.
3. the preparation method of the high tough aluminum alloy materials of plate die casting in a kind of mobile phone, which comprises the following steps:
(1) burner hearth is cleaned up, raw material are prepared according to alloying component ratio；
(2) aluminium ingot is put into furnace, is warming up to 730-760 DEG C, after aluminium ingot all fusing, by ready metal Si or Al-
Si intermediate alloy, red copper or Al-Cu intermediate alloy, electrolytic manganese or Al-Mn intermediate alloy, Zn ingot, Mg ingot and Al-Fe intermediate alloy
It is added in molten aluminum；
(3) after metal all fusing, adjustment temperature of aluminum liquid is to 700-720 DEG C of heat preservation, using high purity inert gas as carrier
Refining agent is sprayed into melt, degasification removal of impurities is skimmed after standing 15 minutes；
(4) ready Al-Sr alterant is added in molten aluminum, stands after stirring sufficiently and skims after ten minutes；
(5) it will be preheated equipped with the mold on 30-50cm thickness, the chute of 30 mesh ceramic filter casees, molten aluminum distribution drum, chain type ingot casting machine
To 150-200 DEG C, and start chain type ingot casting machine and molten aluminum distribution drum, extract smelting furnace chock plug, obtained high tough die casting aluminium of casting closes
Golden ingot casting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910490280.1A CN110106408A (en) | 2019-06-06 | 2019-06-06 | High tough aluminum alloy materials of plate die casting and preparation method thereof in a kind of mobile phone |
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| CN201910490280.1A CN110106408A (en) | 2019-06-06 | 2019-06-06 | High tough aluminum alloy materials of plate die casting and preparation method thereof in a kind of mobile phone |
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Cited By (10)
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| CN111041302A (en) * | 2020-01-07 | 2020-04-21 | 张静怡 | Novel high-strength die-casting aluminum alloy with remarkable natural aging strengthening characteristic and preparation method thereof |
| CN111172435A (en) * | 2020-01-14 | 2020-05-19 | 包头市慧金新材料科技有限公司 | Process method for casting aluminum-silicon alloy by modifying rare earth |
| CN111197132A (en) * | 2020-01-09 | 2020-05-26 | 张煜琰 | Non-heat treatment type high-strength die-casting aluminum alloy and preparation method thereof |
| CN111647785A (en) * | 2020-06-17 | 2020-09-11 | 帅翼驰新材料集团有限公司 | High-strength die-casting aluminum alloy and preparation method thereof |
| CN112575233A (en) * | 2019-09-27 | 2021-03-30 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof and aluminum alloy structural part |
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| CN113046607A (en) * | 2021-03-16 | 2021-06-29 | 郑州大学 | High-hardness high-thermal conductivity multi-element alloy and preparation method thereof |
| CN113737067A (en) * | 2020-05-28 | 2021-12-03 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof and aluminum alloy structural part |
| CN113862529A (en) * | 2020-06-30 | 2021-12-31 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof |
| CN114908275A (en) * | 2022-06-08 | 2022-08-16 | 广东省科学院新材料研究所 | Heat-treatment-free high-strength and high-toughness die-casting aluminum alloy, and preparation method and application thereof |
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| CN113737067A (en) * | 2020-05-28 | 2021-12-03 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof and aluminum alloy structural part |
| CN111647785A (en) * | 2020-06-17 | 2020-09-11 | 帅翼驰新材料集团有限公司 | High-strength die-casting aluminum alloy and preparation method thereof |
| CN113862529A (en) * | 2020-06-30 | 2021-12-31 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof |
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| CN113046607B (en) * | 2021-03-16 | 2022-03-04 | 郑州大学 | High-hardness high-thermal conductivity multi-element alloy and preparation method thereof |
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