CN110129637A - Pack alloy and preparation method thereof and communication product structural member - Google Patents
Pack alloy and preparation method thereof and communication product structural member Download PDFInfo
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- CN110129637A CN110129637A CN201910372923.2A CN201910372923A CN110129637A CN 110129637 A CN110129637 A CN 110129637A CN 201910372923 A CN201910372923 A CN 201910372923A CN 110129637 A CN110129637 A CN 110129637A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
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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
-
- 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
-
- 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
-
- 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 embodiment of the present invention provides a kind of pack alloy, the pack alloy includes each component of following mass percent: magnesium: 0.1%-7%, zinc: 7%-35%, manganese: 0.2%-0.8%, iron: 0.1%-0.7%, titanium and/or zirconium: 0.07%-0.2%, inevitable impurity≤0.3% and aluminium.The pack alloy has both high-intensitive, high tenacity and excellent mobility, is applicable to the molding of complex thin-walled member product.The embodiment of the invention also provides the preparation methods of the pack alloy and the communication product structural member being prepared using the pack alloy.
Description
Technical field
The present invention relates to aluminum alloy materials technical fields, more particularly to a kind of pack alloy and preparation method thereof and lead to
Interrogate product structure part.
Background technique
Pack alloy is while keeping the advantages such as traditional aluminium alloy high-strength, high-cooling property and highly corrosion resistant, tool
There is the characteristics of high fluidity, meets industrialization Die Casting technique, be widely used in the fields such as household electrical appliances, automobile, electronic product.So
And with product multifunction, lightening development, structure space is further compressed, especially allegro electronic industry,
More stringent requirements are proposed for intensity, toughness to die-casting material etc..
Compared with common aluminium silicon systems pack alloy, magnalium series die-casting alloy aluminum resists while with higher-strength
Bending toughness is excellent in, but its mobility is poor, and die casting friendly is insufficient, in thin-walled electronic product die casting (such as mobile phone
Middle plate) etc. in scenes using limited.Therefore, it is necessary to develop a kind of die casting for having both high intensity, high tenacity and superior fluidity
Aluminium alloy.
Summary of the invention
In consideration of it, the embodiment of the present invention provides a kind of pack alloy and preparation method thereof, which has both height
Intensity, high tenacity and excellent mobility, it is poor to solve existing magnalium series die-casting alloy aluminum mobility to a certain extent, it leads
It causes in thin-walled electronic product die casting scene using limited problem.
Specifically, first aspect of the embodiment of the present invention provides a kind of pack alloy, including each of following mass percent
Component:
Magnesium: 0.1%-7%,
Zinc: 7%-35%,
Manganese: 0.2%-0.8%,
Iron: 0.1%-0.7%,
Titanium and/or zirconium: 0.07%-0.2%,
Inevitable impurity≤0.3% and aluminium.
The pack alloy of the embodiment of the present invention, the content by promoting zinc improve alloy flowability, while comprehensively control
The content of the elements such as magnesium, iron, manganese, so that aluminium alloy can have high intensity, high tenacity etc. good while obtaining more excellent mobility
Good comprehensive mechanical property.
In embodiment of the present invention, the mass percent of the zinc is 12%-33%.
In embodiment of the present invention, the mass percent of the zinc is 17%-23%.
In embodiment of the present invention, the mass percent of the magnesium is 2%-6%.
In embodiment of the present invention, the mass percent of the magnesium is 3.3%-5.1%.
In embodiment of the present invention, the mass percent of the iron is 0.12%-0.35%.
In embodiment of the present invention, the mass percent of the iron is 0.2%-0.3%.
In embodiment of the present invention, the mass percent of the manganese is 0.25-0.7%.
In embodiment of the present invention, the mass percent of the manganese is 0.35%-0.6%.
In embodiment of the present invention, the mass percent of the titanium and/or zirconium is 0.08%-0.12%.
In embodiment of the present invention, the component of the pack alloy further includes silicon, and the mass percent of the silicon is greater than 0
And it is less than or equal to 2.3%.
In embodiment of the present invention, the mass percent of the silicon is 0.5%-1.9%.
In embodiment of the present invention, the mass percent of the silicon is 0.7%-1.6%.
In embodiment of the present invention, the component of the pack alloy further includes copper, and the mass percent of the copper is greater than 0
And it is less than or equal to 2.6%.
In embodiment of the present invention, the mass percent of the copper is 0.3%-2.3%.
In embodiment of the present invention, the mass percent of the copper is 0.7%-1.6%.
In embodiment of the present invention, inside the institutional framework of the pack alloy mutually includes changing between α-Al phase and metal
Object is closed, the intermetallic compound is distributed in grain boundary sites or is precipitated in the α-Al phase, and the intermetallic compound includes
MgZn2Phase and Fe-riched phase.
In embodiment of the present invention, under equal conditions, the mobility of the pack alloy is trade mark ADC12 die casting aluminium
91% or more of alloy.
In embodiment of the present invention, yield strength >=240MPa of the pack alloy, elongation percentage >=3%.
The pack alloy that first aspect of the embodiment of the present invention provides has both high-intensitive, high tenacity and excellent mobility,
The problems such as existing magnalium series die-casting alloy aluminum mobility is low, cavity filling is poor, the easy erosion of Yi Lamo, mold can be greatly improved, can be expired
The molding of sufficient labyrinth communication products, the thin-wall part product more demanding to mobility especially suitable for plate in mobile phone etc. at
Type.
Second aspect, the embodiment of the invention also provides a kind of preparation methods of pack alloy, comprising the following steps:
According to the component proportion of pack alloy, fine aluminium ingot is first added in smelting furnace, adds and can mention after aluminium ingot fusing
After metallic element source the progress melting, then refined degassing processing of the other elements component except aluminium, casting obtains the pressure
Cast aluminium alloy, the pack alloy include each component of following mass percent: magnesium: 0.1%-7%, zinc: 7%-35%,
Manganese: 0.2%-0.8%, iron: 0.1%-0.7%, titanium and/or zirconium: 0.07%-0.2%, inevitable impurity≤0.3%, and
Aluminium.
In embodiment of the present invention, after fine aluminium ingot is added in smelting furnace, being heated to 730 DEG C -760 DEG C keeps the aluminium ingot molten
Change, alumal, pure zinc ingot, iron powder, aluminum titanium alloy and/or aluminium zircaloy is first added after all melting in aluminium ingot, is cooled to 700
After DEG C -720 DEG C, pure magnesium ingot, stirring heat preservation 15-25 minutes are added.
In embodiment of the present invention, during the casting and forming, the temperature of casting is 650 DEG C -720 DEG C.
The preparation method that second aspect of the present invention provides, simple process, yields is high, and production cost is low, is applicable to multiple
Miscellaneous thin-wall part and similar scene, have a extensive future.
The third aspect of the embodiment of the present invention provides a kind of communication product structural member, and the communication product structural member is using this
The pack alloy that inventive embodiments first aspect provides is cast.The communication product structural member includes plate in mobile phone.
The communication product structural member that the third aspect of the embodiment of the present invention provides has both high-intensitive, high tenacity and excellent molding
Performance can meet complex thin-wall structure member design demand.
Specific embodiment
Below in conjunction with certain specific embodiments of the invention, the embodiment of the present invention is illustrated.
Existing magnalium series die-casting alloy aluminum, although having the characteristics that high-intensity and high-tenacity, mobility is poor, in thin wall
In electronic product structural component (plate in such as mobile phone) forming process, the problems such as die cast is poor, crackle is more, mold erosion is faced, sternly
Ghost image rings production effect and delivery capability.In order to effectively solve the problems, such as this, the embodiment of the present invention provide one kind have both it is high-intensitive,
The pack alloy of high tenacity and excellent mobility.
Specifically, the embodiment of the present invention provides a kind of pack alloy, is made of the component of following mass percent:
Magnesium: 0.1%-7%,
Zinc: 7%-35%,
Manganese: 0.2%-0.8%,
Iron: 0.1%-0.7%,
Titanium and/or zirconium: 0.07%-0.2%,
Inevitable impurity≤0.3% and aluminium.
Its component of pack alloy of the embodiment of the present invention is to comprehensively consider each chemical element to alloy integrated performance index
The contribution of (including mobility, intensity, toughness, hardness etc.) and determination, the joint for passing through each element of above-mentioned certain content is made
With balanced various performances form stable crystal structure, to obtain the pack alloy of excellent combination property.
Inside the institutional framework of the pack alloy of the embodiment of the present invention mutually includes α-Al phase and intermetallic
Object, the intermetallic compound are distributed in grain boundary sites or are precipitated in the α-Al phase.Wherein, the phase refers to same
The uniformly continuous component part of chemical component, same atom coherent condition and property has between different phases interface to separate.The gold
Compound refers to the compound that metal and metal, metal and metalloid are formed between category.Specifically, the crystalline substance of pack alloy of the present invention
In body structure, the intermetallic compound includes MgZn2Phase, Fe-riched phase etc., when pack alloy component composition in further include copper
(Cu) when element, the intermetallic compound further includes Al2Cu is equal, when pack alloy component composition in further include silicon (Si)
When element, the intermetallic compound further includes Mg2Si is equal.The zinc, magnesium, iron, copper, manganese, titanium, zirconium, partially with atom shape
Formula is solid-solubilized in inside the α-Al phase.
In some embodiments of the invention, the component of pack alloy may also include silicon (Si) element, silicon (Si) control of element
It is greater than 0 in lower content and is less than or equal to 2.3%, since silicon brittleness is big, the silicon of lower content is conducive to improve aluminium alloy
Toughness；And the addition of suitably small amount silicon, hot cracking tendency can be reduced, dimensional stability is improved, while Si can be formed in conjunction with Mg
Mg2Si guarantees some strength of aluminium alloy.In some embodiments, the mass percent of silicon can be 0.5%-1.9%.?
In other embodiments, the mass percent of silicon may be 0.7%-1.6%.In some embodiments, the quality percentage of silicon
Than being specifically as follows 0.8%, 1.2%, 1.5%, 1.7%.
In embodiment of the present invention, magnesium (Mg) is in addition to forming hardening constituent MgZn in conjunction with Zn element, Si element2And Mg2Si,
Alloy strengthening is promoted obviously, meanwhile, the promotion of magnesium element content can improve alloy flowability to a certain extent.But magnesium elements
Easy scaling loss is mingled with tendency seriously, and Mg too high levels can cause extreme influence to normal Die Casting, while can drop low-alloyed tough
Property.In embodiment of the present invention, the content of magnesium is controlled within the scope of 0.1%-7%, in some embodiments, the quality hundred of magnesium
Dividing ratio can be 2%-6%；In further embodiments, the mass percent of magnesium may be 3.3%-5.1%.In some realities
It applies in example, the mass percent of magnesium is specifically as follows 1%, 3%, 4%, 5%, 6%.
In embodiment of the present invention, the increase of zinc (Zn) constituent content can reduce liquidus temperature, promote the flowing of alloy
Property.When Zn constituent content >=20%, have the function of being obviously improved alloy flowability.Meanwhile Zn element can be solid-solubilized in α-Al
In, the effect of solution strengthening is played, but strength enhancing is limited.When strength demand is higher, by adding other elements, such as Mg member
Element forms the second phase (such as MgZn in conjunction with Zn2Phase), alloy strength can be obviously improved.Excessively high Zn constituent content, will lead to resistance to
The problems such as corrosion reduces, thermal stability difference and high hot cracking tendency, meanwhile, it also will increase alloy density, product weight caused suddenly to increase.
So controlling Zn content under conditions of mobility is met the requirements, being properly added other intensified elements, can reach high-strength and high ductility
Effect, while having larger benefit, especially 3C class product to product loss of weight and former material cost.In some embodiments, zinc
Mass percent may be 12%-33%.In further embodiments, the mass percent of the zinc may be 17%-
23%.In some other embodiment, the mass percent of zinc can also be 7%-12%.In some embodiments, the matter of zinc
Amount percentage is specifically as follows 17%, 18%, 19%, 20%, 22%.
In embodiment of the present invention, addition iron (Fe) element can reduce the mucous membrane tendency during aluminium alloy compression casting, protect
Card die casting is gone on smoothly.But when Fe element is excessive, it will form coarse acicular Fe-riched phase, damage the toughness of alloy.So to protect
Demonstrate,prove higher toughness, in the embodiment of the present invention, the mass percent of iron is controlled in 0.1-0.7%.In some embodiments, iron
Mass percent may be 0.12%-0.35%, and in further embodiments, the mass percent of iron may be 0.2%-
0.3%.The embodiment of the present invention controls the content of Fe element at lower limit (0.12%-0.35%), can enable aluminum alloy to have
Higher toughness.
In embodiment of the present invention, the addition of appropriate manganese (Mn) element can be rotten by coarse acicular Fe-riched phase and formation is thin
Small Fe-riched phase reduces Fe to the adverse effect of mechanical property, while the addition of manganese element can reduce the mucous membrane tendency of aluminium alloy.
In embodiment of the present invention, the mass content of manganese is controlled in the range of 0.2%-0.8%, in some embodiments, manganese
Mass percent can be 0.25%-0.7%.In further embodiments, the mass percent of manganese may be 0.35%-
0.6%.In some embodiments, the mass percent of manganese is specifically as follows 0.3%, 0.4%, 0.5%, 0.55%, 0.65%.
In some embodiments of the invention, the component of pack alloy may also include copper (Cu) element, and copper has obvious
Solution strengthening effect, and intermetallic compound Al can be formed with Al2Cu further promotes the intensity of alloy.The present invention is implemented
In mode, the mass percent of the copper is≤2.6%.In some embodiments, the mass percent of copper can be 0.3-
2.3%.In further embodiments, the mass percent of copper may be 0.7%-1.6%.In some embodiments, copper
Mass percent is specifically as follows 0.5%, 0.8%, 1.2%, 1.4%, 1.5%, 2.0%.
In embodiment of the present invention, titanium (Ti) element, zirconium (Zr) element can be used as heterogeneous nucleation point, play refinement crystal grain,
Promote the effect of aluminium alloy toughness.In embodiments of the present invention, titanium elements can be individually added into, zirconium member can also be individually added into
Titanium elements and zr element can also be added in element simultaneously.In some embodiments, the mass percent of titanium and/or zirconium can be
0.07%-0.12%, in further embodiments, the mass percent of titanium and/or zirconium may be 0.08%-0.1%.
In embodiment of the present invention, in order to obtain better comprehensive performance, in some embodiments, can by magnesium, copper, manganese,
The control of the sum of mass percent of four kinds of elements of titanium is being greater than or equal to 4%.In further embodiments, can by magnesium, copper, manganese,
The control of the sum of mass percent of four kinds of elements of titanium is being greater than or equal to 6%.
In an embodiment of the present invention, the pack alloy is made of the component of following mass percent: silicon: 0.7-
1.6%, zinc: 17%-23%, magnesium: 3.3%-5.1%, copper: 0.7%-1.6%, iron: 0.12%-0.35%, manganese: 0.35-
0.6%, titanium and/or zirconium: 0.07%-0.12%.The pack alloy of the embodiment of the present invention, by comprehensively considering each element pairing
The influence of golden performance, under conditions of mobility is met the requirements, control Zn content is 17%-23%, and be properly added Mg, Cu etc.
Intensified element, can reach more preferably high-strength and high ductility effect, while controllable weight alloy, former material cost, thermal stability, anti-corrosion
Performance etc. is in preferably level, to preferably meet 3C class products application demand.
In embodiment of the present invention, since the increase of impurity element can reduce the performance of material, so the embodiment of the present invention
The content of inevitable impurity element is controlled≤0.3%.
In embodiment of the present invention, under the comprehensive function of element-specific certain content, under equal conditions, the die casting
The mobility of aluminium alloy is 91% or more of ADC12.In embodiment of the present invention, the yield strength of the pack alloy >=
240MPa, elongation percentage >=3%.Yield strength is yield limit when yield phenomenon occurs for metal material, that is, is resisted micro
The stress of plastic deformation.The metal material occurred for no remarkable yield phenomenon is, it is specified that generate the stress of 0.2% residual deformation
Value is used as its yield limit, referred to as proof stress or yield strength.Elongation percentage refers to the finger of description material plasticity performance
Mark is the percentage of the ratio between total deformation Δ L of gauge length section and former gauge length L after sample tension failure.
The pack alloy of the above-mentioned offer of the embodiment of the present invention has both high-intensitive, high tenacity and excellent mobility, can be big
Width improves the problems such as existing magnalium series die-casting alloy aluminum mobility is low, cavity filling is poor, the easy erosion of Yi Lamo, mold, can meet multiple
The molding of miscellaneous structure communication products, especially suitable for the thin-wall part scene more demanding to mobility.It is particularly applicable to hand
The fields such as machine, laptop, communication apparatus industry, automobile, residential hardware.Specifically, the embodiment of the invention provides one kind
Communication product structural member, the communication product structural member are cast using pack alloy provided in an embodiment of the present invention.Institute
Stating communication product structural member includes plate in mobile phone.Certainly in communication product, the structural member of other available articles made of aluminium alloy can also
It is cast using the pack alloy of the embodiment of the present invention, such as shell, bracket.The communication product structure of the embodiment of the present invention
The wall thickness of part does not limit to particularly, can be thick as far as possible, can also be thin as far as possible, such as can be 0.25mm-2mm, into
It is one step 0.4mm-1mm, the wall thickness can refer to the local wall thickness of structural member, such as the wall thickness of 50% or more area, or
The wall thickness of 70% or more area of person.
Correspondingly, the embodiment of the invention also provides a kind of preparation methods of pack alloy, comprising the following steps:
Fine aluminium ingot is added first in smelting furnace, adds again after aluminium ingot fusing by S10, the component proportion according to pack alloy
The metallic element source for entering to provide the component of the other elements except aluminium carries out melting；
After S20, refined degassing processing, casting obtains the pack alloy, the pack alloy includes following matter
Measure percentage each component: magnesium: 0.1%-7%, zinc: 7%-35%, manganese: 0.2%-0.8%, iron: 0.1%-0.7%, titanium and/
Or zirconium: 0.07%-0.2%, inevitable impurity≤0.3% and aluminium.
In some embodiments, the component of the pack alloy may also include copper.In some embodiments, described
The component of pack alloy may also include element silicon.
In embodiment of the present invention, the metallic element source that can provide the other elements component except aluminium can be proof gold
Belong to ingot, intermediate alloy, metal-powder etc., specifically includes pure zinc ingot, pure magnesium ingot, alusil alloy, iron powder, alumal, aluminum bronze and close
Gold, aluminum titanium alloy, aluminium zircaloy etc..In embodiment of the present invention, various pure metal ingots and intermediate alloy can be carried out cleaning and
Drying and processing, to remove surface oxide layer and dirty.
In embodiment of the present invention, in step S10, after fine aluminium ingot is added in smelting furnace, being heated to 730 DEG C -760 DEG C makes
Alumal, pure zinc ingot, iron powder, aluminum titanium alloy and/or aluminium zircaloy is first added after all melting in the aluminium ingot fusing, aluminium ingot,
After being cooled to 700 DEG C -720 DEG C, pure magnesium ingot, stirring heat preservation -25 minutes 15 minutes are added.More specifically, adding in smelting furnace
After entering fine aluminium ingot, it is heated to 730 DEG C -760 DEG C and keeps the temperature 30 minutes, melt the aluminium ingot, aluminium is first added after all melting in aluminium ingot
Manganese alloy, pure zinc ingot, iron powder, aluminum titanium alloy and/or aluminium zircaloy add refining agent and slag hitting, then stand 15 points of heat preservation
Clock -25 minutes；Add pure magnesium ingot, stirring heat preservation -25 minutes 15 minutes.
In embodiment of the present invention, in the casting process, material temperature, that is, cast temperature is 650 DEG C -720 DEG C.
In embodiment of the present invention, during the refining, the dedicated refining agent of aluminium alloy is added, is passed through argon gas and is revolved
Turn degasification, then stands 15-20 minutes, be sufficiently separated impurity.Before the casting and forming, online dehydrogenation and twin-stage are carried out
Filtering.In embodiment of the present invention, the refining agent is the commercially available dedicated refining agent of conventional aluminium alloy, the online dehydrogenation and double
Grade is filtered into this field routine operation, and the present invention is not particularly limited.
In embodiment of the present invention, the mass percent of the silicon can be≤2.3%.In some embodiments, silicon
Mass percent can be 0.5%-1.9%.In further embodiments, the mass percent of silicon may be 0.7%-
1.6%.In some embodiments, the mass percent of silicon is specifically as follows 0.8%, 1.2%, 1.5%, 1.7%.
In some embodiments, the mass percent of magnesium can be 2%-6%；In further embodiments, the quality of magnesium
Percentage may be 3.3%-5.1%.In some embodiments, the mass percent of magnesium be specifically as follows 1%, 3%, 4%,
5%, 6%.
In some embodiments, the mass percent of zinc may be 12%-33%.In further embodiments, described
The mass percent of zinc may be 17%-23%.In some other embodiment, the mass percent of zinc can also be 7%-
12%.
In some embodiments, the mass percent of iron may be 0.12%-0.35%, in further embodiments,
The mass percent of iron may be 0.2%-0.3%.
In some embodiments, the mass percent of manganese can be 0.25%-0.7%.In further embodiments, manganese
Mass percent may be 0.35%-0.6%.
In embodiment of the present invention, the mass percent of the copper can be≤2.6%.In some embodiments, copper
Mass percent can be 0.3-2.3%.In further embodiments, the mass percent of copper may be 0.7%-1.6%.
In embodiments of the present invention, titanium elements can be individually added into, zr element can also be individually added into, can also be added simultaneously
Enter titanium elements and zr element.In some embodiments, the mass percent of titanium and/or zirconium can be 0.07%-0.12%, another
In some embodiments, the mass percent of titanium and/or zirconium may be 0.08%-0.1%.
In embodiment of the present invention, in order to obtain better comprehensive performance, in some embodiments, can by magnesium, copper, manganese,
The control of the sum of mass percent of four kinds of elements of titanium is being greater than or equal to 4%.In further embodiments, can by magnesium, copper, manganese,
The control of the sum of mass percent of four kinds of elements of titanium is being greater than or equal to 6%.
In embodiment of the present invention, since the increase of impurity element can reduce the performance of material, so the embodiment of the present invention
The content of inevitable impurity element is controlled≤0.3%.
Various aluminium can be prepared further combined with existing casting technique (such as liquid die casting, gravitational casting) and close by the present invention
Golden molded part, including communication product structural member described in the embodiment of the present invention.
Preparation method provided in an embodiment of the present invention, it is excellent to have that process flow is simple, yields is high, production cost is low etc.
Point, the pack alloy being prepared have both high-intensitive, high tenacity and excellent mobility, are suitable for complex thin-walled member and class
Like scene, have a extensive future.
The embodiment of the present invention is further detailed below by multiple examples.
Example 1
A kind of pack alloy is made of the component of following mass percent: silicon: 1.69%, magnesium: and 5.62%, zinc:
8.52%, copper: 2.38%, manganese: 0.538%, iron: 0.121%, titanium: 0.104%, zirconium 0.0015%, inevitable impurity content
≤ 0.3%, remaining is aluminium.
The preparation method of pack alloy in this example, comprising the following steps:
According to the component proportion of pack alloy, fine aluminium ingot is added first in smelting furnace, is heated to 730 DEG C -760 DEG C,
Heat preservation 30 minutes, melts aluminium ingot, and all after fusing, pure zinc ingot, alusil alloy, iron powder, alumal, aluminum bronze is first added in aluminium ingot
Alloy, aluminum titanium alloy and alumel add refining agent and slag hitting, then stand heat preservation -25 minutes 15 minutes；Then cool down
To after 700 DEG C -720 DEG C, pure magnesium ingot is added, stirs evenly and keeps the temperature -25 minutes 15 minutes；Add the dedicated refining of aluminium alloy
Agent is passed through argon gas and carries out rotation degasification, then stands 20 minutes, is sufficiently separated impurity, subsequent slag hitting is scratched in the ashes；It carries out again online
Dehydrogenation and double-stage filtering, then casting forms pack alloy ingot, and cast temperature is 650-720 DEG C.
Example 2-3
The specific formula of its pack alloy is shown in Table 1.
The aluminium alloy for being ADC12 by the pack alloy of example 1-3 of the present invention, traditional Al-Mg-Si-type aluminum alloy and the trade mark
Carry out Mechanics Performance Testing and fluidity testing.
Mechanics Performance Testing: the pack alloy ingot for acquisition of casting in example 1-3 of the present invention is melted again, is heated to
700 DEG C, according to the regulation of national standard GB/T228.1-2010, the tensile sample for using 250T die casting machine to prepare diameter as 6mm, test
Its yield strength and elongation percentage, rate of extension are 1.5mm/ minutes.Using same method, tests tradition Al-Mg-Si system aluminium and close
The mechanical property for the aluminium alloy that gold and the trade mark are ADC12.Test result is shown in Table 1.
Fluidity testing: using metal spiral line method, test its mobility, under equal conditions, tests tradition Al-Mg-
The mobility for the aluminium alloy that Si line aluminium alloy and the trade mark are ADC12.Test result is shown in Table 1.
Table 1
From the results shown in Table 1, the mobility of pack alloy is better than tradition Al-Mg-Si in the embodiment of the present invention
Series die-casting alloy aluminum is 91% or more of conventional ADC12 (Al-Si-Cu system) pack alloy mobility.From example 2 and example 3
Can know, while keeping higher toughness, the aluminium alloy of multielement (Zn, Mg, Cu) cooperative reinforcing scheme of example 2 it is strong
Degree is better than the super high Zn content scheme of example 3.Though higher Zn constituent content is conducive to mobility raising, product weight will lead to
Excessively high, thermal stability and corrosion resistance reduce, so under conditions of meeting mobility and toughness, by Zn control of element moderate
Content range (such as 17%-23%), and it is superior by other element cooperative reinforcings such as magnesium, copper to help to obtain comprehensive performance
Pack alloy, preferably to meet the needs of 3C Product.
Claims (24)
1. a kind of pack alloy, which is characterized in that each component including following mass percent:
Magnesium: 0.1%-7%,
Zinc: 7%-35%,
Manganese: 0.2%-0.8%,
Iron: 0.1%-0.7%,
Titanium and/or zirconium: 0.07%-0.2%,
Inevitable impurity≤0.3% and aluminium.
2. pack alloy as described in claim 1, which is characterized in that the mass percent of the zinc is 12%-33%.
3. pack alloy as described in claim 1, which is characterized in that the mass percent of the zinc is 17%-23%.
4. pack alloy as described in claim 1, which is characterized in that the mass percent of the magnesium is 2%-6%.
5. pack alloy as described in claim 1, which is characterized in that the mass percent of the magnesium is 3.3%-5.1%.
6. pack alloy as described in claim 1, which is characterized in that the mass percent of the iron is 0.12%-
0.35%.
7. pack alloy as described in claim 1, which is characterized in that the mass percent of the iron is 0.2%-0.3%.
8. pack alloy as described in claim 1, which is characterized in that the mass percent of the manganese is 0.25%-
0.7%.
9. pack alloy as described in claim 1, which is characterized in that the mass percent of the manganese is 0.35%-
0.6%.
10. pack alloy as described in claim 1, which is characterized in that the mass percent of the titanium and/or zirconium is
0.08%-0.12%.
11. pack alloy as described in claim 1, which is characterized in that the component of the pack alloy further includes silicon, institute
The mass percent for stating silicon is greater than 0 and is less than or equal to 2.3%.
12. pack alloy as claimed in claim 11, which is characterized in that the mass percent of the silicon is 0.5%-
1.9%.
13. pack alloy as claimed in claim 12, which is characterized in that the mass percent of the silicon is 0.7%-
1.6%.
14. pack alloy as described in claim 1, which is characterized in that the component of the pack alloy further includes copper, institute
The mass percent for stating copper is greater than 0 and is less than or equal to 2.6%.
15. pack alloy as claimed in claim 14, which is characterized in that the mass percent of the copper is 0.3%-
2.3%.
16. pack alloy as claimed in claim 15, which is characterized in that the mass percent of the copper is 0.7%-
1.6%.
17. pack alloy as described in claim 1, which is characterized in that inside the institutional framework of the pack alloy
It mutually include α-Al phase and intermetallic compound, the intermetallic compound is distributed in grain boundary sites or is precipitated in the α-Al phase
Interior, the intermetallic compound includes MgZn2Phase and Fe-riched phase.
18. such as the described in any item pack alloys of claim 1-17, which is characterized in that under equal conditions, the die casting
The mobility of aluminium alloy is 91% or more of trade mark ADC12 pack alloy.
19. such as the described in any item pack alloys of claim 1-18, which is characterized in that the surrender of the pack alloy is strong
Spend >=240 MPa, elongation percentage >=3%.
20. a kind of preparation method of pack alloy, which comprises the following steps:
According to the component proportion of pack alloy, fine aluminium ingot is first added in smelting furnace, aluminium can be provided by adding after aluminium ingot fusing
Except other elements component metallic element source carry out melting, then refined degassing processing after, casting, obtain the die casting aluminium
Alloy, the pack alloy include each component of following mass percent: magnesium: 0.1%-7%, zinc: 7%-35%, manganese:
0.2%-0.8%, iron: 0.1%-0.7%, titanium and/or zirconium: 0.07%-0.2%, inevitable impurity≤0.3% and aluminium.
21. preparation method as claimed in claim 20, which is characterized in that after fine aluminium ingot is added in smelting furnace, be heated to 730
DEG C -760 DEG C melt the fine aluminium ingot, aluminium ingot be all first added after fusing alumal, pure zinc ingot, iron powder, aluminum titanium alloy and/
Or aluminium zircaloy, after being cooled to 700 DEG C -720 DEG C, add pure magnesium ingot, stirring heat preservation 15-25 minutes.
22. preparation method as claimed in claim 20, which is characterized in that in the casting process, material temperature is 650 DEG C -720
℃。
23. a kind of communication product structural member, which is characterized in that the communication product structural member is used as claim 1-19 is any
Pack alloy described in is cast.
24. communication product structural member as claimed in claim 23, which is characterized in that the communication product structural member includes mobile phone
Middle plate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372923.2A CN110129637A (en) | 2019-05-06 | 2019-05-06 | Pack alloy and preparation method thereof and communication product structural member |
| EP20802262.4A EP3954798B1 (en) | 2019-05-06 | 2020-04-27 | Die-cast aluminum alloy, preparation method therefor, and structural member for communication product |
| PCT/CN2020/087148 WO2020224468A1 (en) | 2019-05-06 | 2020-04-27 | Die-cast aluminum alloy, preparation method therefor, and structural member for communication product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372923.2A CN110129637A (en) | 2019-05-06 | 2019-05-06 | Pack alloy and preparation method thereof and communication product structural member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110129637A true CN110129637A (en) | 2019-08-16 |
Family
ID=67576320
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910372923.2A Pending CN110129637A (en) | 2019-05-06 | 2019-05-06 | Pack alloy and preparation method thereof and communication product structural member |
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| Country | Link |
|---|---|
| EP (1) | EP3954798B1 (en) |
| CN (1) | CN110129637A (en) |
| WO (1) | WO2020224468A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714150A (en) * | 2019-10-15 | 2020-01-21 | Oppo广东移动通信有限公司 | Aluminum alloy and preparation method thereof, electronic equipment structural member and electronic equipment |
| WO2020224468A1 (en) * | 2019-05-06 | 2020-11-12 | 华为技术有限公司 | Die-cast aluminum alloy, preparation method therefor, and structural member for communication product |
| CN113913655A (en) * | 2020-07-08 | 2022-01-11 | 荣耀终端有限公司 | Die-casting aluminum alloy and preparation method thereof, structural member and terminal |
| CN114277292A (en) * | 2021-12-28 | 2022-04-05 | 广东金铝轻合金股份有限公司 | High-hardness aluminum alloy suitable for manufacturing vehicle-mounted camera and manufacturing process |
| CN114790528A (en) * | 2022-05-27 | 2022-07-26 | 广东澳美铝业有限公司 | AlZnMgCu alloy with low Zr content, low deformation resistance and high strength |
| CN115704069A (en) * | 2021-08-06 | 2023-02-17 | 四会市辉煌金属制品有限公司 | Quaternary aluminum alloy and preparation method thereof |
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| CN114277292A (en) * | 2021-12-28 | 2022-04-05 | 广东金铝轻合金股份有限公司 | High-hardness aluminum alloy suitable for manufacturing vehicle-mounted camera and manufacturing process |
| CN114790528A (en) * | 2022-05-27 | 2022-07-26 | 广东澳美铝业有限公司 | AlZnMgCu alloy with low Zr content, low deformation resistance and high strength |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020224468A1 (en) | 2020-11-12 |
| EP3954798A4 (en) | 2022-06-08 |
| EP3954798A1 (en) | 2022-02-16 |
| EP3954798B1 (en) | 2023-04-05 |
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