CN109852852A - High strength die-casting aluminium alloy and preparation method and aluminium alloy casting piece manufacturing method - Google Patents
High strength die-casting aluminium alloy and preparation method and aluminium alloy casting piece manufacturing method Download PDFInfo
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- CN109852852A CN109852852A CN201811373099.4A CN201811373099A CN109852852A CN 109852852 A CN109852852 A CN 109852852A CN 201811373099 A CN201811373099 A CN 201811373099A CN 109852852 A CN109852852 A CN 109852852A
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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
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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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
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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
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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
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
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Abstract
An aspect of of the present present invention is related to a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy of thermal conductivity, it is characterized in that, relative to total weight, it is configured to the alloy being made of 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe), 1.0~3.0 weight percent magnesium (Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent titanium (Ti), 1.0~3.0 weight percent tins (Sn) and remaining aluminium (Al).
Description
Technical field
The manufacture of casting piece the present invention relates to aluminium diecasting alloy and its manufacturing method and using the aluminium diecasting alloy
Method, more particularly, to showing outstanding corrosion resistance and exothermicity and high thermal conductivity and tensile strength and surrender is strong
Degree, is not limited to sheet forming and complicated shape or structure, and the corrosion resistance of electronic equipment easy to manufacture or auto parts and
The system of the outstanding high strength die-casting aluminium alloy of thermal conductivity and its manufacturing method and the aluminium alloy casting piece using the aluminium alloy
Make method.
Background technique
Have following two usually as the method for being manufactured from aluminium product: firing processing method carries out extruding to aluminium plate and adds
Work is manufactured with required shape；Casting die injects aluminium fusant in the mold that is machined with shape of product, manufacture with
The identical casting of mold.
Have the advantages that size is correct by the product that casting die produces, is used in needs more complicated design extensively
Automobile or airplane parts, electronic equipment, optical device etc., according to the multifunction of product, in addition to the inherent feature of aluminum series alloy
Other than light weight, additional demand corrosion resistance, abrasion performance, high intensity, thermal conductivity etc. are gone back.
Alloy representative as this diecasting alloys has aluminium series alloy ALDC12 and magnesium series alloy AZ91D.
The tensile strength of yield strength and 331MPa of the ALDC12 alloy with 165MPa, AZ91D alloy have more than ALDC12 alloy
The yield strength of low 150MPa and the tensile strength of 230MPa.This common die casting conjunction be difficult to be suitable for nowadays smart phone or
Panel housings equally need high-intensitive super thin product.
Wherein, zinc system ZA 27 alloy shows the yield strength of 365MPa and the tensile strength of 426MPa, although intensity is excellent
Show, but specific gravity is 5g/cc, it is heavier than aluminium alloy therefore upper limited in terms of lightweight.
Recently, in order to solve this problem, propose that Korean Patent Publication No. 1133103 (denomination of invention: use by die casting
High-strength aluminum alloy).The aluminium alloy proposed adds zinc (Zn), magnesium (Mg), copper (Cu), zirconium (Zr) and titanium in aluminum matrix
(Ti), intensity is improved.But above-mentioned alloy needs to carry out 24 hours or more ageing treatments at 120 DEG C, thus exists not only
Productivity decreases, and the alloy molten object that is injected into mold of high speed is sintered the mould inner wall the problem of.
As other examples, proposing Korean Patent Laid the 2012-0129458th, (denomination of invention: thin-wall product is high
Intensity pack alloy).The aluminium alloy proposed adds magnesium (Mg), silicon (Si), iron (Fe), manganese (Mn), copper in aluminum matrix
(Cu), zinc (Zn), titanium (Ti) thus not only improve intensity, but also by reducing the agglutinating property between alloy molten object and mold,
Also improve castability.However, the corrosion resistance of above-mentioned alloy is poor, exists because of moisture or moisture, surface is caused to be oxidized and corrode
Disadvantage.
Existing technical literature
Patent document
(patent document 1) Korean Patent Publication No. 1133103 (title of invention: die casting high-strength aluminum alloy)
(title of invention: thin-wall product is with high-strength for (patent document 2) Korean Patent Laid the 2012-0129458th
Spend pack alloy)
Summary of the invention
The present invention is fundamentally to solve the problems, such as above previous and propose as a result, it is intended that providing can be simultaneously
Realize the corrosion resistance and thermal conductivity of high-intensitive, high corrosion-resistant and high heat conductance outstanding high strength die-casting aluminium alloy and its preparation
The manufacturing method of method and the aluminium alloy casting piece using it.
In order to realize this purpose, an aspect of of the present present invention is related to corrosion resistance and the outstanding high strength die-casting aluminium of thermal conductivity
Alloy is preferably made of silicon (Si), iron (Fe), magnesium (Mg), nickel (Ni), titanium (Ti), tin (Sn) and remaining aluminium (Al).
Preferably, total weight of the silicon of the invention (Si) relative to alloy, is made of 5~7 weight percent.
Preferably, total weight of the iron of the invention (Fe) relative to alloy, is made of 0.1~1.0 weight percent.
Preferably, total weight of the magnesium of the invention (Mg) relative to alloy, is made of 1.0~3.0 weight percent.
Preferably, total weight of the nickel of the invention (Ni) relative to alloy, is made of 0.1~1.0 weight percent.
Preferably, total weight of the titanium of the invention (Ti) relative to alloy, is made of 0.15~0.45 weight percent.
Preferably, total weight of the tin of the invention (Sn) relative to alloy, is made of 1.0~3.0 weight percent.
The thermal conductivity of tensile strength and 140~160W/m.K of the aluminium alloy of the invention with 300~320MPa.
Preferably, another aspect of the present invention relates to the systems of the outstanding high strength die-casting aluminium alloy of corrosion resistance and thermal conductivity
Make method, comprising: first step prepares relative to total weight by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent
Than iron (Fe), 1.0~3.0 weight percent magnesium (Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent
Than the material of titanium (Ti), 1.0~3.0 weight percent tins (Sn) and residual Al (Al) composition；Second step, with 700~750 DEG C
The aluminium (Al) of above-mentioned preparation is heated after melting, is heated up with 800~850 DEG C；Third step, in above-mentioned second step
After liquefactent adds silicon (Si), heated up with 900~1000 DEG C；Four steps adds in the mixture of above-mentioned third step
After adding iron (Fe), nickel (Ni), titanium (Ti), heat 4~5 hours；5th step, with 700~750 DEG C, to above-mentioned four steps
Mixture cooled down after, add magnesium (Mg) and tin (Sn) and melt；And the 6th step, in the mixed of above-mentioned 5th step
It closes after removing impurity in object, is tapped as ingot bar, completion alloy.
At this point, above-mentioned second step of the invention is to the 6th step, also the ingredients of a mixture is corrected by analysis respectively
Process is preferred.
And, it is preferable that in above-mentioned 6th step of the invention, argon or nitrogen are injected in the lower part of mixture, by rising
Bubble floats impurity, and removes the impurity that surface is floated.
Also, for above-mentioned 6th step of the invention, during tapping to mixture, also by tapping
The filter process that outlet and tapping flow path carry out contaminant filter is preferred.
Preferably, the high strength die-casting aluminium alloy outstanding another aspect of the present invention relates to a kind of corrosion resistance and thermal conductivity
The manufacturing method of casting piece, comprising: prepare the total weight relative to alloy by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight
Measure percentage iron (Fe), 1.0~3.0 weight percent magnesium (Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight
The step of measuring the alloy of percentage titanium (Ti), 1.0~3.0 weight percent tins (Sn) and remaining aluminium (Al) composition；And it is right
The step of aluminium alloy is melted, and die casting is injected into, manufactures casting piece the alloy molten object of melting.
The casting piece manufactured through the invention is preferably electronic equipment part or auto parts.
The thickness (T) of the casting piece manufactured through the invention is 0.38mm hereinafter, shaping thin wall can be carried out.
On the other hand, up till now, term or word used in this specification and claims are not interpreted as being confined to
Conventional or on dictionary the meaning, illustrates that the invention of oneself can definition art appropriate by the best approach based on inventor
The principle of language concept should be interpreted to accord with the meaning and concept of technical idea of the invention.Therefore, remember in this specification
The only most preferred embodiment of the invention of structure shown in the embodiment and attached drawing of load, and be not to illustrate this hair
Bright technical idea, so should be appreciated that can have a variety of equivalent programs that can replace it and deformation in the viewpoint of the application
Example.
As illustrated by above structure and effect, the present invention provides following effect.
The first, the oxide layer on surface is stable and is densely formed, and under saltwater environment and water or atmospheric condition, has outstanding
Corrosion resistance, the service life of electronic product or auto parts thus can be improved.
The second, due to the thermal conductivity characteristics with 140W/mK or more, exothermicity is outstanding, effectively releasing electronics
Thus the fever phenomenon of interiors of products can ensure that the safety and performance of equipment.
Third, due to i.e. with 300MPa or more tensile strength and also can realize 0.38t shaping thin wall below,
The auto parts etc. for needing the densification based on high-intensitive safety and the product based on shaping thin wall can be widely used in.
Detailed description of the invention
Fig. 1 and Fig. 2 is the precedence diagram for indicating the manufacturing process of alloy of the invention.
Fig. 3 is the reference figure for indicating to manufacture the melting furnace apparatus of alloy of the invention.
Fig. 4 is the picture according to Fig. 2 test piece made.
Fig. 5 is the picture that the embodiment and Comparative Examples 1 and 2 of salt water are sprayed on surface.
Fig. 6 is the picture for indicating to measure the device of the extent of corrosion of alloy of the invention.
Fig. 7 is the picture for indicating to measure the device of the conductivity of alloy of the invention.
Specific embodiment
In the following, the preferred embodiments of the present invention are described in detail referring to attached drawing.
An aspect of of the present present invention is related to aluminium alloy, for by silicon (Si), iron (Fe), magnesium (Mg), nickel (Ni), titanium (Ti), tin
(Sn) and the aluminium diecasting alloy of remaining aluminium (Al) composition, high-intensitive with high corrosion-resistant and high heat conductance to realize simultaneously.
Silicon (Si) improves mobility and intensity, relative to the total weight of alloy, is included in 5.0 to 7.0 weight percent models
It is preferred in enclosing.That is, be heat-treated difference if silicon is greater than 7.0 weight percent, can be broken, if less than 5.0 weight percent,
It cannot achieve the purpose of script.Therefore, most preferably include 6.0 weight percent, so as to can be improved mobility and intensity and
Heat treatment.
Iron (Fe) prevents adherence and improves intensity, relative to the total weight of alloy, is included in 0.1 to 1.0 weight percent
Than being preferred in range.That is, reducing corrosion resistance if iron is greater than 1.0 weight percent and generating sediment, then less than 0.01 weight
Percentage then cannot achieve the purpose of script.It therefore, include most preferably 0.5 weight percent, in order to prevent adherence simultaneously
Intensity can be improved, and there can be corrosion resistance.
Magnesium (Mg) grows dense surface oxide layer (MgO) sharply, prevents internal corrosion, and improve intensity, relative to
The total weight of alloy is preferred in 1.0 to 3.0 weight percentage ranges.That is, being dropped if magnesium is greater than 3.0 weight percent
Low-flow, it is difficult to complicated shape is manufactured, if cannot achieve the purpose of script less than 1.0 weight percent.Therefore, magnesium
(Mg) it in order to improve corrosion resistance and intensity, and realizes mobility appropriate, most suitably includes 2.0 weight percent.
Nickel (Ni) improves corrosion resistance and is preferred in 0.1 to 1.0% range relative to the total weight of alloy.Wherein,
Even if nickel is greater than 1.0 weight percent, then corrosion resistance is not prominent improves, if cannot achieve originally less than 0.1 weight percent
Purpose.Therefore, if nickel includes 0.5 weight percent, corrosion resistance and harmfulness can not suitably be met.
Titanium (Ti) improves mouldability and corrosion resistance and intensity by the microminiaturization of crystal grain, relative to the total weight of alloy,
It is preferred in 0.15 to 0.45 weight percentage ranges.That is, if titanium is greater than 0.45 weight percent, the stream of Jiang Di Rong soup
Dynamic, promotion is bad, if cannot achieve the purpose of script less than 0.15 weight percent.It therefore, most suitably include 0.15 weight
The titanium of percentage is measured, so that mouldability and intensity can be improved.
Tin (Sn) improves mouldability and machinability, the thermal conductivity reduced according to titanium (Ti) is compensated, relative to alloy
Total weight is preferred in 1.0 to 3.0 weight percentage ranges.That is, being reduced anti-corrosion if tin is greater than 3.0 weight percent
Property, if cannot achieve the purpose of script less than 1.0 weight percent.It therefore, most preferably include 1.0 weight percent
Tin (Sn), can to have both mouldability and machinability and corrosion resistance.
Not only there is high corrosion-resistant by the aluminium alloy that this ingredient and content form, but also anti-with 300~320MPa
The thermal conductivity of Zhang Qiangdu and 140~160W/m.K.
Another aspect of the present invention is manufactured by first step (S10) to the 6th step (S60) as shown in Figure 1, providing
The method of corrosion resistance and the outstanding high strength die-casting aluminium alloy of thermal conductivity.Firstly, by preparation relative to total weight by 5~7
Weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe), 1.0~3.0 weight percent magnesium (Mg), 0.1~1.0 weight
Measure percentage nickel (Ni), 0.15~0.45 weight percent titanium (Ti), 1.0~3.0 weight percent tins (Sn) and remaining aluminium
(Al) first step (S10) of the material formed.
Preferably, prepare relative to total weight by 6.0 weight percentage of silicon (Si), 0.5 weight percent iron (Fe), 2.0
Weight percent magnesium (Mg), 0.5 weight percent nickel (Ni), 0.15 weight percent titanium (Ti), 1.0 weight percent tins (Sn)
And the material of remaining aluminium (Al) composition.
Also, it after being melted with 700~750 DEG C of ready aluminium (Al) of heating, is heated up with 800~850 DEG C
Second step (S20), by after the liquefactent of second step (S20) adds silicon (Si), with 900~1000 DEG C heat up the
Three steps (S30).
Then, by heating 4~5 after the mixture of third step (S30) adds iron (Fe), nickel (Ni), titanium (Ti)
The four steps (S40) of hour adds magnesium after the mixture of four steps (S40) is cooled to 700~750 DEG C
(Mg) and tin (Sn) and melt the 5th step (S50).
Finally, being tapped after removing impurity in the mixture of the 5th step (S50) as ingot bar, completion conjunction
6th step (S60) of gold.It is divided into oxide, carbide, intermetallic compound as impurity, generally by hydrogen and sodium group
At.Low-alloyed engineering properties and molding processibility drop in hydrogen, and the surface for generating corrosion or cracking etc combines, and sodium reduces flowing
Property and castability.
That is, as shown in figure 3, floating impurity by blistering, and remove surface in the lower part of mixture injection argon or nitrogen
Impurity on floating.Also, remove deimpurity mixture, during tapping to mixture, also by tapping outlet and
Flow path of tapping carries out the filter process of contaminant filter.
On the other hand, as shown in Fig. 2, second step (S20) is to the 6th step (S60), respectively also by mixture
The process that ingredient is analyzed to correct is preferred.That is, adding silicon (Si), iron (Fe), nickel (Ni), titanium in the aluminium (Al) as main material
(Ti), magnesium (Mg), tin (Sn) and melt in the state of, using analytical instrument equipment, also add the material being added as needed.
Another aspect of the present invention provides the method for manufacturing casting piece using aluminium diecasting alloy.Firstly, preparing opposite
In total weight by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe), 1.0~3.0 weight percent magnesium
(Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent titanium (Ti), 1.0~3.0 weight percent tins
(Sn) and remaining aluminium (Al) composition alloy.
Preferably, prepare relative to total weight by 6.0 weight percentage of silicon (Si), 0.5 weight percent iron (Fe), 2.0
Weight percent magnesium (Mg), 0.5 weight percent nickel (Ni), 0.15 weight percent titanium (Ti), 1.0 weight percent tins (Sn)
And the alloy of remaining aluminium (Al) composition.
Then, the aluminium alloy of preparation is melted, in the state of heating the alloy molten object melted with 680~750 DEG C, with
75MPa is injected into die casting, completes casting piece.
The casting piece of completion, with adding in aluminium as the metallic element suitably formed, the oxide layer on surface is stable and thick
It is thickly formed, under saltwater environment or water or atmospheric condition, there is outstanding corrosion resistance, show high tensile strength and surrender
Intensity, when casting, alloy molten object is not sintered in metal inner surface, is improved the mold fillibility of alloy molten object, can be manufactured thickness
(T) it is the casting piece of 0.38mm thin plate form below, is suitable for electronic equipment part or auto parts.
In the following, watching specific embodiment, whether effective the substantial effect that alloy of the invention has is understood.
<preparing alloy>
Prepare the alloy for the embodiment 1 being made of representative content of the invention such as following table 1 and is made of previous content
Comparative example 1 (ADC12.1) and comparative example 2 (S33N) alloy.
Table 1
| It distinguishes | Al | Si | Fe | Mg | Ni | Ti | Sn |
| Embodiment 1 | Bal. | 6 | 0.5 | 2.0 | 0.5 | 0.15 | 1.0 |
| Comparative example 1 | Bal. | 11 | 0.8 | 0.2 | 0.03 | 0.08 | 0.01 |
| Comparative example 2 | Bal. | 6.5 | 0.2 | 1.4 | 0.08 | 0.2 | 0.2 |
(unit: weight percent)
<production sample>
The alloy that such as table 1 prepares is made as to the test piece of ASTM small size as shown in Table 2 (Subsi ze) specification.Production
Test piece it is as shown in Figure 4.
Table 2
<physical property experiment>
Using universal testing machine (Instron 5982), the tensile strength and surrender of made each test piece are measured
Intensity measures thermal conductivity according to ASTM E1461.Measurement result is recorded in table 3 below.
Table 3
By measurement result as it can be seen that embodiment 1 and the tensile strength of comparative example 2 are respectively 300MPa or more, meet high-intensitive
Property, but for thermal conductivity, embodiment 1 is 154WmK, this is significant compared to the comparative example 2 of 124WmK outstanding.
<corrosion resistance test>
Firstly, not being surface-treated to each test piece of production, according to the KS D as salt water injection experiment method
9502, by following condition, it is injected in surface.
Sodium chloride nacl (Sodium Chloride): 99.5%
Brine strength: 5%
Water: deionized water and distilled water
Test temperature: 35 DEG C ± 1 DEG C
It sprays liquid pH (35 DEG C): pH6.5~7.2
Spray pressure: 0.07~0.17MPa
Injection method: continuous injection
Injecting time: for 24 hours
As shown in figure 5, the test piece for the following condition that detects by an unaided eye.Also, electrochemistry experiment test piece and Experiment of Electrical Conductivity
With test piece, following test piece is used, 9cm is made2The exposure of base material area, after installation, SiC grinding-material is ground to 2000 times
Later, it is washed with distilled water, it is dry.Using ZIVE:SP1 sensing equipment as shown in FIG. 6, silver/chlorine is used as normal electrode
Change silver-colored (Ag/AgCl), high purity graphite electrode is used as to pole, with the scanning speed of 2mV, under the conditions of NaCl 5%, base
Split pole, measurement average corrosion current potential and average corrosion current density, average corrosion rate are carried out in the two poles of the earth equilibrium potential.Also,
Conductivity measurement (Fischer) as shown in Figure 7: SMP-350 sensing equipment is used, on exposed raw material surface, is led to
The ASTM E 1004 based on 60kHz vortex-like fashion is crossed, standard test is carried out to conductivity.
It can be confirmed by observation result, compared with comparative example 1 or comparative example 2, the color of embodiment 1 is obvious, surface dense.
Table 4
By measurement result it is found that embodiment 1 is similar with the corrosion rate of comparative example 2, but for conductivity, implement
Example 1 is 32, this compares 25.2 comparative example 2, significant outstanding.That is, conductivity height means that the resistance based on corrosion is few, embodiment
Mean the outstanding counterevidence of corrosion resistance higher than comparative example.
<titanium ingredient is than experiment>
Titanium (Ti) is the important element affected by the microminiaturization of crystal grain to mouldability and corrosion resistance and intensity,
In the embodiment tested above, as shown in the following Table 5, the tensile strength for only adjusting the test piece of ratio of components of titanium (Ti) is determined
With yield strength and thermal conductivity.Also, as shown in table 6 below, also measured were conductivity and corrosion potential and current density and
Corrosion rate.
Table 5
By measurement result it is found that the weight ratio of titanium (Ti) is fewer, tensile strength and thermal conductivity are more improved, but yield strength
It reduces instead, in contrast, weight ratio is higher, and tensile strength and thermal conductivity are lower, and yield strength is higher.
Table 6
By measurement result it is found that the weight ratio of titanium (Ti) is smaller, the speed of corrosion is slower, and conductivity is higher；Weight ratio is got over
Greatly, the speed of corrosion is faster, and conductivity is lower.
<experiment is investigated>
It can finally confirm referring to table 5 and table 6, as the high intensity and high corrosion-resistant and height for realizing institute's purpose of the present invention simultaneously
An important factor for thermal conductivity is titanium (Ti).That is, the weight ratio if titanium (Ti) be 0.15 weight percent hereinafter, if that anti-tensile occurs is strong
The phenomenon that degree reduces occurs what thermal conductivity and corrosion resistance reduced if the weight ratio of titanium (Ti) is 0.45 weight percent or more
Thus phenomenon can confirm that the appropriate weight ratio of titanium (Ti) is 0.15~0.45 weight percent, it is preferable that 0.15 weight percent
It is advisable.
The present invention is not limited to documented embodiment, can carry out in the case where not departing from thought and range of the invention
A variety of modification and deformation, this is obvious for those of ordinary skill in the art.Therefore, it this variation or repairs
Change example and belongs to claim of the invention.
Claims (9)
1. a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy of thermal conductivity, which is characterized in that the gross weight relative to alloy
Amount, by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe), 1.0~3.0 weight percent magnesium (Mg),
0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent titanium (Ti), 1.0~3.0 weight percent tins (Sn)
And remaining aluminium (Al) composition.
2. a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy of thermal conductivity, which is characterized in that according to claim 1
Aluminium alloy with 300~320MPa tensile strength and 140~160W/m.K thermal conductivity.
3. the manufacturing method of a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy of thermal conductivity characterized by comprising
First step, prepare relative to total weight by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe),
1.0~3.0 weight percent magnesium (Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent titanium (Ti),
The material of 1.0~3.0 weight percent tins (Sn) and residual Al (A1) composition；
Second step is risen after being melted with 700~750 DEG C of ready aluminium (Al) of heating with 800~850 DEG C
Temperature；
Third step is heated up after the liquefactent of the second step adds silicon (Si) with 900~1000 DEG C；
Four steps heats 4~5 hours after mixture addition iron (Fe) of the third step, nickel (Ni), titanium (Ti)；
5th step after cooling down to the mixture of the four steps, adds magnesium (Mg) and tin with 700~750 DEG C
(Sn) it melts；And
6th step after removing impurity in the mixture of the 5th step, is tapped as ingot bar, completion alloy.
4. the manufacturing method of corrosion resistance according to claim 3 and the outstanding high strength die-casting aluminium alloy of thermal conductivity,
Be characterized in that, the second step to the 6th step respectively also by analysis the ingredients of a mixture come the process that corrects.
5. the manufacturing method of corrosion resistance according to claim 3 and the outstanding high strength die-casting aluminium alloy of thermal conductivity,
It is characterized in that, in the 6th step, injects argon or nitrogen in the lower part of mixture, float impurity by blistering, and remove
Impurity on surface is floating.
6. the manufacturing method of corrosion resistance according to claim 3 and the outstanding high strength die-casting aluminium alloy of thermal conductivity,
It is characterized in that, for the 6th step, during tapping to mixture, is also flowed by exporting and tapping to tapping
The filter process of road progress contaminant filter.
7. the manufacturing method of a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy casting piece of thermal conductivity, which is characterized in that
Include:
Prepare the total weight relative to alloy by 5~7 weight percentage of silicon (Si), 0.1~1.0 weight percent iron (Fe), 1.0
~3.0 weight percent magnesium (Mg), 0.1~1.0 weight percent nickel (Ni), 0.15~0.45 weight percent titanium (Ti), 1.0
The step of alloy of~3.0 weight percent tins (Sn) and remaining aluminium (A1) composition；And
The step of aluminium alloy is melted, the alloy molten object of melting is injected into die casting, manufactures casting piece.
8. the manufacturing method of a kind of corrosion resistance and the outstanding high strength die-casting aluminium alloy casting piece of thermal conductivity, which is characterized in that
Casting piece according to claim 7 is electronic equipment part or auto parts.
9. the manufacturer of corrosion resistance according to claim 8 and the outstanding high strength die-casting aluminium alloy casting piece of thermal conductivity
Method, which is characterized in that the thickness (T) of the casting piece is 0.38mm or less.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170157968A KR101910466B1 (en) | 2017-11-24 | 2017-11-24 | Aluminum alloy for high strength die casting excellent in corrosion resistance and thermal conductivity, method for manufacturing the same, and manufacturing method of aluminum alloy casting using the same |
| KR10-2017-0157968 | 2017-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109852852A true CN109852852A (en) | 2019-06-07 |
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ID=64131918
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373099.4A Pending CN109852852A (en) | 2017-11-24 | 2018-11-19 | High strength die-casting aluminium alloy and preparation method and aluminium alloy casting piece manufacturing method |
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| Country | Link |
|---|---|
| US (1) | US20190161834A1 (en) |
| KR (1) | KR101910466B1 (en) |
| CN (1) | CN109852852A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151712A (en) * | 2020-12-24 | 2021-07-23 | 特铝科技重庆有限公司 | Aluminum alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| US20190161834A1 (en) | 2019-05-30 |
| KR101910466B1 (en) | 2018-10-25 |
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