CN104264017B - A kind of high heat conduction pack alloy and preparation method thereof - Google Patents
A kind of high heat conduction pack alloy and preparation method thereof Download PDFInfo
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- CN104264017B CN104264017B CN201410553790.6A CN201410553790A CN104264017B CN 104264017 B CN104264017 B CN 104264017B CN 201410553790 A CN201410553790 A CN 201410553790A CN 104264017 B CN104264017 B CN 104264017B
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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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- 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
Abstract
The present invention relates to a kind of high heat conduction pack alloy and preparation method thereof, in this pack alloy, the percentage by weight of each component is: Si:10.50wt% 13.50wt%；Co:0.10wt% 0.50wt%；Fe:0.20wt% 0.40wt%；Ti:0.01wt% 0.05wt%；B:0.01wt% 0.05wt%；Other total impurities and less than or equal to 0.2%, surplus is aluminum.By using cobalt oxide as alterant in the preparation process of this pack alloy, in conjunction with boron, the addition of titanium elements, thermal conductivity can be prepared and reach the pack alloy of 190W/ (m K).The present invention considerably improves heat conductivility on the basis of existing Cast aluminium alloy gold ZL102, and can realize good die casting performance, greatly meets IT and auto industry application demand.
Description
Technical field
The present invention relates to technical field of metal, be specifically related to a kind of high heat conduction pack alloy and preparation method thereof.
Background technology
Cast aluminium alloy gold utensil has the alloy system identical with wrought aluminium alloy, has the strengthening machine identical with wrought aluminium alloy
Reason (in addition to strain hardening), they main difference is that: in Cast aluminium alloy gold, the maximum level of alloy element silicon exceedes many
Silicone content in number wrought aluminium alloy.Cast aluminium alloy gold is in addition to containing intensified element, it is necessary to containing the cocrystallizing type of q.s
Element (typically silicon), so that alloy has suitable mobility, it is easy to the shrinkage joint of foundry goods when filling casting.
Aluminium alloy good processability, especially eutectic aluminum-silicon diecasting alloys, its not only good processability, and light specific gravity,
Surface aesthetic and corrosion-resistant；During casting, casting character is preferable, goods good combination property.It is excellent pack alloy, can be used for
Various complex-shaped parts, are used widely in many fields.But along with modern industry particularly electronics row
In industry to the research of the heat dissipation problem of integrated circuit deeply, heat-generating disc, radiator etc. require by automobile and household electric appliances
Improving, and the electric equipment products such as PC trends towards high speed, miniaturization in recent years, presently used material is difficult meets product
Actual operation requirements, the die-cast aluminum alloy material of research and development high thermal conductivity, the heat-conductive characteristic improving material has become a kind of development
Trend.Therefore, the thermal conductivity improving cocrystallized Al-Si alloy has significant application value.
At present, the most frequently used pack alloy is AlSi12, and wherein the content of silicon is i.e. eutectic point 12%；It is under as cast condition
Thermal conductivity is about 96W/ (m K), although its die casting performance is good, but the thermal conductivity of thermal conductivity and Al-Mg-Si wrought aluminium alloy is also
There is certain gap.Therefore, improve the thermal conductivity of AlSi12 pack alloy, expand the industrial applicability of AlSi12, it is achieved add
The lower-cost extrusion process of work replaces the mach technique of extrudate that processing cost is higher, it is thus achieved that functional, cost
Cheap high thermal conductivity AlSi12 aluminum alloy die casting is increasingly required for people.
Summary of the invention
It is an object of the invention to provide and a kind of possess good casting character and mechanical property is also equipped with high heat conduction simultaneously
Pack alloy of rate and preparation method thereof.
The present inventor is in long-term pack alloy research, it has unexpectedly been found that by closing at AlSi12 die casting aluminium
Gold adds a certain amount of metallic element cobalt (Co), the heat conductivility of pack alloy can not only be improved greatly, also simultaneously
Can crystal grain thinning, put forward heavy alloyed mechanical property.Accordingly, the technical solution used in the present invention is as follows:
A kind of high heat conduction pack alloy, the percentage by weight of its each component is: Si:10.50wt%-13.50wt%；
Co:0.10wt%-0.50wt%；Fe:0.20wt%-0.40wt%；Ti:0.01wt%-0.05wt%；B:0.01wt%-
0.05wt%；Other total impurities and less than or equal to 0.2%, surplus is aluminum.
Further, the percentage by weight of each component is: Si:11.50wt%-12.50wt%；Co:0.20wt%-
0.40wt%；Fe:0.25wt%-0.35wt%；Ti:0.03wt%-0.04wt%；B:0.03wt%-0.04wt%；Other is miscellaneous
Matter total amount and less than or equal to 0.2%, surplus is aluminum.
The preparation method of a kind of high heat conduction pack alloy, comprises the following steps:
1) dry: by ready raw material: fine aluminium, aluminum silicon intermediate alloy and other intermediate alloy and cobalt oxide powder, enter
Row drying and processing；
2) melting: first melted by fine aluminium ingot, when temperature of aluminum liquid reaches 750 DEG C 800 DEG C, adds in the middle of aluminum silicon
Alloy, after aluminum silicon intermediate alloy melts, adds other intermediate alloy, after fusing completely, stands；Carry out stokehold composition again to divide
Analysis, the component content of detection alloy melt, melt underproof to component content makes its composition contain by feed supplement or the mode that waters down
Amount reaches qualified scope；
3) alloying: alloy melt qualified for component content is cooled to 720 DEG C 750 DEG C, passes through inertia in the melt
Gas is blown into alterant cobalt oxide powder, then proceedes to remove the gred with inert gas deaeration, then carries out stokehold component analysis, qualified after
Can cast.
Further, step 1) described in other intermediate alloy be made up of tri-kinds of alloys of Al-Fe, Al-Ti and Al-B.
Further, step 1) described in time of repose be 10 20min.
Further, step 2) described in noble gas include nitrogen, argon or neon.
Further, step 2) described in cobalt oxide powder weight is raw material gross weight 0.2 0.5%.
Further, step 2) described in degasification slagging-off the time be 10 20min.
High thermal conductivity pack alloy prepared by the present invention has important using value, can be widely applied to automobile and IT
Field, applies also for heat-transfer device, radiator etc., and its excellent heat transfer efficiency can promote effective utilization of the energy, reduces energy
Consumption.The present invention by using cobalt oxide as alterant, in conjunction with boron, the addition of titanium elements, can prepare and lead in the fabrication process
Heating rate reaches the pack alloy of 190W/ (m K).The present invention significantly improves on the basis of existing Cast aluminium alloy gold ZL102
Heat conductivility, and good die casting performance can be realized, greatly meet IT and auto industry range of application.
Detailed description of the invention
High heat conduction pack alloy provided the present invention below in conjunction with embodiment and preparation method thereof is described further,
But and the range of application of the unrestricted present invention.
Embodiment 1
The percentage by weight of each component of the high heat conduction pack alloy of the embodiment of the present invention 1 is: silicon: 10.5wt%；Cobalt:
0.1wt%；Ferrum: 0.2wt%；Boron: 0.01wt%；Titanium: 0.05wt%；Other total impurities and less than or equal to 0.2%, surplus
For aluminum.
The preparation method of the high heat conduction pack alloy of the embodiment of the present invention 1, comprises the steps:
1) dry: by ready raw material: close in the middle of fine aluminium (purity all >=99.9wt%), aluminum silicon intermediate alloy, ferro-aluminum
Gold, aluminum boron intermediate alloy, aluminum titanium intermediate alloy and cobalt oxide powder, carry out drying and processing, and wherein Al, Co are at a temperature of 100 DEG C
Drying, AlSi, AlFe, AlB and AlTi intermediate alloy is then dried at a temperature of 150 DEG C, and cobalt oxide powder is then 200 DEG C of temperature
Lower drying；
2) melting: select crucible electrical resistance furnace to carry out melting, first resistance furnace is preheated to 200 DEG C, the most again to crucible internal walls
Uniformly coating coating agent coating；After to be dried, first load weighted fine aluminium ingot is melted, when temperature of aluminum liquid reaches 800 DEG C,
Add proportioning load weighted aluminum silicon intermediate alloy, after aluminum silicon intermediate alloy melts, add proportioning load weighted in other
Between alloy, after fusing completely, stand insulation 15min, when temperature is down to 750 DEG C, carry out being sufficiently stirred for 5min, finally carry out stove
Front component analysis, the component content of detection alloy melt, melt underproof to component content is made by feed supplement or the mode that waters down
Its component content reaches qualified scope；
3) alloying: alloy melt qualified for component content is cooled to 730 DEG C, is 0.2MPa by pressure in the melt
Argon be blown into the alterant cobalt oxide powder of the 0.1%wt that weight of cobalt is property weight, then proceed to remove with argon degasification
Slag 10min, then carry out stokehold composition detection, qualified after can cast, finally pour into the swage that preheating temperature is 150 DEG C
In, prepare diecasting alloys ingot casting A1.
Embodiment 2
The percentage by weight of each component of the high heat conduction pack alloy of the embodiment of the present invention 2 is: silicon: 11wt%；Cobalt:
0.2wt%；Ferrum: 0.3wt%；Boron: 0.02wt%；Titanium: 0.03wt%；Other total impurities and less than or equal to 0.2%, surplus
For aluminum.
The preparation method of the high heat conduction pack alloy of the embodiment of the present invention 2 is same as in Example 1, but noble gas used
For nitrogen, prepare diecasting alloys ingot casting A2.
Embodiment 3
The percentage by weight of each component of the high heat conduction pack alloy of the embodiment of the present invention 3 is: silicon: 12wt%；Cobalt:
0.3wt%；Ferrum: 0.35wt%；Boron: 0.04wt%；Titanium: 0.01wt%；Other total impurities and less than or equal to 0.2%, remaining
Amount is aluminum.
The preparation method of the high heat conduction pack alloy of the embodiment of the present invention 3 is same as in Example 1, but noble gas used
For neon, prepare diecasting alloys ingot casting A3.
Embodiment 4
The percentage by weight of each component of the high heat conduction pack alloy of the embodiment of the present invention 4 is: silicon: 12.5wt%；Cobalt:
0.4wt%；Ferrum: 0.4wt%；Boron: 0.03wt%；Titanium: 0.02wt%；Other total impurities and less than or equal to 0.2%, surplus
For aluminum.
The preparation method of the high heat conduction pack alloy of the embodiment of the present invention 4 is same as in Example 1, prepares diecasting alloys casting
Ingot A4.
Embodiment 5
The percentage by weight of each component of the high heat conduction pack alloy of the embodiment of the present invention 5 is: silicon: 13.5wt%；Cobalt:
0.5wt%；Ferrum: 0.4wt%；Boron: 0.05wt%；Titanium: 0.01wt%；Other total impurities and less than or equal to 0.2%, surplus
For aluminum.
The preparation method of the high heat conduction pack alloy of the embodiment of the present invention 5 is same as in Example 1, prepares diecasting alloys casting
Ingot A5.
Comparative example
The percentage by weight of each component of comparative example of the present invention is: silicon: 12wt%；Cobalt: 0wt%；Ferrum: 0.3wt%；Boron:
0.02wt%；Titanium: 0.01wt%；Other total impurities and less than or equal to 0.2%, surplus is aluminum, its preparation method and enforcement
Example 1 is identical, prepares diecasting alloys ingot casting B1.Performance test:
1) chemical composition:
Diecasting alloys ingot casting B1 prepared by the diecasting alloys ingot casting A1-A5 prepared by above-described embodiment 1-5 and comparative example
Carrying out chemical composition detection (ICP test), the chemical composition testing result of diecasting alloys is shown in Table 1.
2) mechanical property and thermal conductivity:
Diecasting alloys ingot casting A1-A5 prepared by the diecasting alloys ingot casting B1 above-mentioned comparative example prepared and embodiment 1-5,
Require that making standard specimen respectively carries out tensile test at room temperature test and thermal conductivity test, test result such as table 2 institute according to GB
Show.
Table 1 (mass fraction wt%)
| Group | Silicon | Cobalt | Ferrum | Boron | Titanium | Aluminum |
| Comparative example | 12 | 0 | 0.3 | 0.02 | 0.01 | Surplus |
| Embodiment 1 | 10.5 | 0.1 | 0.2 | 0.01 | 0.05 | Surplus |
| Embodiment 2 | 11 | 0.2 | 0.3 | 0.02 | 0.03 | Surplus |
| Embodiment 3 | 12 | 0.3 | 0.35 | 0.04 | 0.01 | Surplus |
| Embodiment 4 | 12.5 | 0.4 | 0.4 | 0.03 | 0.02 | Surplus |
| Embodiment 5 | 13.5 | 0.5 | 0.4 | 0.05 | 0.01 | Surplus |
Table 2 pack alloy performance table
After data according to above-mentioned Tables 1 and 2 are it can be seen that add Co in pack alloy, the thermal conductivity of the present invention obtains
To being obviously improved；Additionally the present invention is on the premise of guaranteeing the high thermal conductivity of pack alloy, yet further enhances its mechanics
Performance, thus greatly expand its industrial applicability.
Cobalt, titanium and three kinds of elements of boron are added in conventional ZL 102 alloy by the present invention, and being used in combination of these three element is aobvious
Work improves ZL102 aluminium alloy thermal conductivity, expands the industrial applicability of ZL102, it is achieved that functional, with low cost
High thermal conductivity AlSi12 aluminum alloy die casting.In the present invention, silicon can put forward heavy alloyed casting character and power as alloying element
Learning performance, cobalt can carry heavy alloyed heat conductivility and mechanical property as alloying element, is simultaneously introduced cobalt and conjunction can be greatly improved
The mobility of gold, the ferrum element of addition can drop low-alloyed sticking to mould characteristic, finally achieve good die casting performance；Boron and titanium shape
Become compound can refine cast sturcture, improve alloy mechanical property, the combination that above-mentioned each element is effective and reasonable further, it is achieved
In existing alloy casting performance basis, significantly improve the heat conductivility of pack alloy.Therefore, the height that the present invention provides
Heat conduction pack alloy has multiple premium properties, is with a wide range of applications.
Above embodiment illustrates technical scheme, and it will be appreciated by those skilled in the art that can be by above-mentioned
Technical scheme carries out deforming or equivalent, all can obtain other embodiments of the invention.
Claims (7)
1. the preparation method of one kind high heat conduction pack alloy, it is characterised in that comprise the following steps:
1) dry: by ready raw material: fine aluminium, aluminum silicon intermediate alloy and other intermediate alloy and cobalt oxide powder, dry
Dry-cure；
2) melting: first melted by fine aluminium ingot, when temperature of aluminum liquid reaches 750 DEG C 800 DEG C, adds and closes in the middle of aluminum silicon
Gold, after aluminum silicon intermediate alloy melts, adds other intermediate alloy, after fusing completely, stands；Carry out stokehold composition again to divide
Analysis, the component content of detection alloy melt, melt underproof to component content makes its composition contain by feed supplement or the mode that waters down
Amount reaches qualified scope；
3) alloying: alloy melt qualified for component content is cooled to 720 DEG C 750 DEG C, passes through noble gas in the melt
Be blown into alterant cobalt oxide powder, then proceed to remove the gred with inert gas deaeration, then carry out stokehold component analysis, qualified after
Cast；
Wherein, in described pack alloy, the percentage by weight of each component is: Si:10.50wt%-13.50wt%；Co:
0.10wt%-0.50wt%；Fe:0.20wt%-0.40wt%；Ti:0.01wt%-0.05wt%；B:0.01wt%-
0.05wt%；Other total impurities and less than or equal to 0.2%, surplus is aluminum.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that the weight hundred of each component
Proportion by subtraction is: Si:11.50wt%-12.50wt%；Co:0.20wt%-0.40wt%；Fe:0.25wt%-0.35wt%；Ti:
0.03wt%-0.04wt%；B:0.03wt%-0.04wt%；Other total impurities and less than or equal to 0.2%, surplus is aluminum.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that in the middle of described other
Alloy is made up of tri-kinds of alloys of Al-Fe, Al-Ti and Al-B.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that step 2) described in
Time of repose is 10 20min.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that step 3) described in
Noble gas includes nitrogen, argon or neon.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that step 3) described in
Cobalt oxide powder weight is the 0.2 0.5% of raw material gross weight.
The preparation method of high heat conduction pack alloy the most according to claim 1, it is characterised in that step 3) described in remove
The gas slagging-off time is 10 20min.
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| CN106191566A (en) * | 2016-08-31 | 2016-12-07 | 清远市顺博铝合金有限公司 | A kind of pack alloy |
| CN106244865A (en) * | 2016-08-31 | 2016-12-21 | 清远市顺博铝合金有限公司 | The aluminium alloy that a kind of surface property is good |
| CN106191567A (en) * | 2016-08-31 | 2016-12-07 | 清远市顺博铝合金有限公司 | A kind of corrosion-resistant pack alloy |
| CN106191568A (en) * | 2016-08-31 | 2016-12-07 | 清远市顺博铝合金有限公司 | A kind of easy anodised corrosion-resistant pack alloy |
| CN108411166A (en) * | 2018-02-28 | 2018-08-17 | 山东河山机械股份有限公司 | A kind of pack alloy and preparation method thereof |
| CN111057889A (en) * | 2020-01-02 | 2020-04-24 | 西安昆仑工业（集团）有限责任公司 | Preparation method of die-casting aluminum alloy material |
| CN111270111A (en) * | 2020-04-01 | 2020-06-12 | 湖南理工学院 | Aluminum-silicon alloy containing Ti and B and preparation method thereof |
| CN112111759A (en) * | 2020-08-21 | 2020-12-22 | 阿坝铝厂 | Method for manufacturing grain-refined and impurity-free aluminum ingot |
| CN112662920B (en) * | 2020-12-02 | 2022-03-15 | 成都慧腾创智信息科技有限公司 | High-thermal-conductivity high-toughness die-casting aluminum-silicon alloy and preparation method thereof |
| CN114737091A (en) * | 2022-03-14 | 2022-07-12 | 珠海市润星泰电器有限公司 | Die-casting aluminum alloy for automobile component and preparation method thereof |
| CN115491551A (en) * | 2022-09-21 | 2022-12-20 | 苏州凯宥电子科技有限公司 | Aluminum alloy casting and surface treatment method thereof |
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