CN106636773A - Aluminum alloy heat radiating material for LED (light emitting diode) and preparation method and purpose thereof - Google Patents
Aluminum alloy heat radiating material for LED (light emitting diode) and preparation method and purpose thereof Download PDFInfo
- Publication number
- CN106636773A CN106636773A CN201611107898.8A CN201611107898A CN106636773A CN 106636773 A CN106636773 A CN 106636773A CN 201611107898 A CN201611107898 A CN 201611107898A CN 106636773 A CN106636773 A CN 106636773A
- Authority
- CN
- China
- Prior art keywords
- aluminium
- coverture
- beryllium
- metal
- metallic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
Abstract
The invention discloses an aluminum alloy heat radiating material for LED (light emitting diode) and a preparation method and a purpose thereof. The aluminum alloy heat radiating material is formed by smelting the following alloy elements in percentage by mass: 0.8 to 4.5% of beryllium, 0.08 to 0.15% of scandium, 0.02 to 0.06% of cadmium, and the balance of aluminum. The preparation method comprising the following steps of preparation of furnace material, pretreatment of furnace material, smelting treatment, refining and casting. The aluminum alloy heat radiating material has the advantages that a certain amount of beryllium, scandium and cadmium is doped into the pure aluminum to prepare the aluminum alloy heat radiating material; the heat conductivity is about 223 to 232W/(mK) at the temperature of 25 DEG C; under the same test conditions (test environment, electric power, current and the like), relative to AZ91 magnesium alloy; the junction temperature of the aluminum alloy heat radiating material is decreased by 1.94 to 2.85 DEG C, the 10000h light attenuation is decreased by 1.96 to 2.53%, the service life is prolonged by 15.3 to 18.9%, and the good heat radiating property is realized.
Description
The application is application number 2015107465273,03 day November 2015 applying date, " one kind is applied to denomination of invention
The divisional application of aluminium alloy heat sink material of LED as well as preparation method and application thereof ".
Technical field
The present invention relates to LED technical field of heat dissipation, specifically a kind of aluminium alloy heat sink material and its preparation suitable for LED
Method and purposes.
Background technology
LED (Light Emitting Diode, light emitting diode) is a kind of can to convert electrical energy into consolidating for visible ray
The semiconductor devices of state.The features such as LED has energy-saving and environmental protection, life-span length, small volume, can be widely applied to various instructions, shows
Show, decorate, the field such as backlight, general lighting and urban landscape.But at present the sustainable development of LED industry still faces technology and chooses
War, wherein LED radiatings are a problem demanding prompt solutions！LED is high to cooling requirements, and the LED failure for having 70% is because dissipating
What heat caused not in time, the heat 90% that LED is produced is to external diffusion by conduction pattern.The pass in LED life-span is affected at present
Key is quality light source and whole lamp radiating effect, needs exploitation high-performance heat sink material badly.
On traditional material, the thermal conductivity highest of copper is good heat sink material, but high cost, the density of copper is greatly, limits
Its application on a heat sink；The thermal conductivity of aluminium is higher, cost is relatively low, is the main material of radiator；The thermal conductivity of magnesium is compared with copper
It is poor with aluminium, but the heat dispersion of magnesium alloy is better than copper alloy and aluminium alloy.Therefore, before the thermal conductivity effect for ensureing aluminium alloy
Put, the heat dispersion for how improving aluminium alloy is the problem of urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of aluminium alloy heat sink material of good heat dissipation effect suitable for LED and its preparation
Method and purposes.
For achieving the above object, the present invention provides following technical scheme：
A kind of aluminium alloy heat sink material suitable for LED, is formed by the alloying element melting of following mass percent：Beryllium
0.8～4.5%, scandium 0.08～0.15%, cadmium 0.02～0.06%, balance of aluminium.
As further scheme of the invention：Quality purity >=99.8% of the aluminium.
As further scheme of the invention：Formed by the alloying element melting of following mass percent：Beryllium 1.8～
3.5%th, scandium 0.10～0.12%, cadmium 0.03～0.05%, balance of aluminium.
As further scheme of the invention：Formed by the alloying element melting of following mass percent：Beryllium 2.8%, scandium
0.10%th, cadmium 0.04%, balance of aluminium.
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.25～0.28% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First
Coverture raw material by mass percentage is made up of carbon black 70～78% and vermiculite 22～30%；Second coverture presses quality percentage
The raw material of ratio is made up of lime stone 30～45% and attapulgite 55～70%；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 300～400 DEG C, respectively crushes the first coverture for preparing, the second coverture and deposits in 95～110
DEG C drying box in be dried 3～5 hours；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
80～85% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, continue to rise
Temperature removes the first coverture on aluminium liquid surface to 1050～1100 DEG C, is subsequently adding step 2) the middle graininess for pre-processing
Metallic beryllium, is sufficiently stirred for, and remaining metallic aluminium is added after granular metal beryllium fine melt, and step 2 is added after metallic aluminium fine melt) in
The granular metal scandium of pretreatment, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, so
After spread one layer of second coverture and cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 750～780 DEG C, with carbon trichloride refining agent refining treatment, refining time are carried out
For 25～30min, stir repeatedly in refining process, 15～20min is stood after refining, finally temperature is adjusted to into 720～750 DEG C and is entered
Row drags for slag, drags for and directly pour into the aluminium alloy for preparing in mould after slag, and the demoulding after cooling obtains aluminium after finishing
Alloy heat-sink material.
Purposes of the described aluminium alloy heat sink material in LED heat sink section bars are prepared.
Compared with prior art, the invention has the beneficial effects as follows：
Metal by mixing the metallic beryllium, high intensity and plasticity of a certain amount of highly thermally conductive high specific heat in fine aluminium of the invention
Scandium, compared with the cadmium metal of high-tensile and wearability, make a kind of aluminium alloy heat sink material, under the conditions of 25 DEG C, the aluminium alloy
The thermal conductivity of heat sink material is about 223～232W/ (mK), (experimental enviroment, electrical power, electric current under same test conditions
Deng), relative to AZ91 magnesium alloys, the junction temperature of the aluminium alloy heat sink material have dropped 1.94～2.85 DEG C, 10000h light decays
1.96～2.53% are have dropped, service life extends 15.3～18.9%, show good heat dispersion.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of aluminium alloy heat sink material suitable for LED, by the alloy unit of following mass percent
Plain melting is formed：Beryllium 0.8%, scandium 0.08%, cadmium 0.02%, balance of aluminium (quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.28% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 70% and vermiculite 30%；Second coverture raw material by mass percentage is by lime
Stone 30% and attapulgite 70% are constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 300 DEG C, crushes and deposit in 95 DEG C of drying box by the first coverture for preparing, the second coverture respectively
Interior drying 5 hours；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
80% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1050 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads one layer
Two covertures cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 750 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
30min, stirs repeatedly in refining process, and 15min is stood after refining, and finally temperature is adjusted to into 720 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Embodiment 2
In the embodiment of the present invention, a kind of aluminium alloy heat sink material suitable for LED, by the alloy unit of following mass percent
Plain melting is formed：Beryllium 4.5%, scandium 0.15%, cadmium 0.06%, balance of aluminium (quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.25% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 78% and vermiculite 22%；Second coverture raw material by mass percentage is by lime
Stone 45% and attapulgite 55% are constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 400 DEG C, crushes and deposit in 110 DEG C of drying by the first coverture for preparing, the second coverture respectively
It is dried 3 hours in case；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
85% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1100 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads one layer
Two covertures cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 780 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
25min, stirs repeatedly in refining process, and 20min is stood after refining, and finally temperature is adjusted to into 750 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Embodiment 3
In the embodiment of the present invention, a kind of aluminium alloy heat sink material suitable for LED, by the alloy unit of following mass percent
Plain melting is formed：Beryllium 0.8%, scandium 0.15%, cadmium 0.06%, balance of aluminium (quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.26% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by lime
Stone 38% and attapulgite 62% are constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 350 DEG C, crushes and deposit in 105 DEG C of drying by the first coverture for preparing, the second coverture respectively
It is dried 4 hours in case；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads one layer
Two covertures cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Embodiment 4
In the embodiment of the present invention, a kind of aluminium alloy heat sink material suitable for LED, by the alloy unit of following mass percent
Plain melting is formed：Beryllium 4.5%, scandium 0.08%, cadmium 0.02%, balance of aluminium (quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.26% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by lime
Stone 38% and attapulgite 62% are constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 350 DEG C, crushes and deposit in 105 DEG C of drying by the first coverture for preparing, the second coverture respectively
It is dried 4 hours in case；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads one layer
Two covertures cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Embodiment 5
In the embodiment of the present invention, a kind of aluminium alloy heat sink material suitable for LED, by the alloy unit of following mass percent
Plain melting is formed：Beryllium 2.8%, scandium 0.10%, cadmium 0.04%, balance of aluminium quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by being weighed
The 0.26% of raw material gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by lime
Stone 38% and attapulgite 62% are constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process,
And metallic beryllium, metal scandium are ground into into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and graininess
Metal scandium is preheated to 350 DEG C, crushes and deposit in 105 DEG C of drying by the first coverture for preparing, the second coverture respectively
It is dried 4 hours in case；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads one layer
Two covertures cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Comparative example 1
A kind of aluminium alloy heat sink material suitable for LED, is formed by the alloying element melting of following mass percent：Beryllium
2.8%th, cadmium 0.04%, balance of aluminium quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium and cadmium metal are weighed according to required element proportioning, by the total matter of weighed raw material
The 0.26% of amount weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture presses quality hundred
The raw material for dividing ratio is made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by the He of lime stone 38%
Attapulgite 62% is constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, cadmium metal are carried out into oil removing, blast process, and by metal
Beryllium is ground into the graininess of particle diameter≤1mm；Metallic aluminium, cadmium metal, granular metal beryllium are preheated to into 350 DEG C, will be prepared respectively
The first coverture well, the second coverture are crushed and deposited in 105 DEG C of drying box and be dried 4 hours；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, adds remaining metallic aluminium after granular metal beryllium fine melt, and after metallic aluminium fine melt cadmium metal is added, and is sufficiently stirred for
It is even, then spread one layer of second coverture and cover liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Comparative example 2
A kind of aluminium alloy heat sink material suitable for LED, is formed by the alloying element melting of following mass percent：Beryllium
2.8%th, scandium 0.10%, balance of aluminium quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium are weighed according to required element proportioning, by the total matter of weighed raw material
The 0.26% of amount weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture presses quality hundred
The raw material for dividing ratio is made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by the He of lime stone 38%
Attapulgite 62% is constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium, metal scandium are carried out into oil removing, blast process, and by metal
Beryllium, metal scandium are ground into the graininess of particle diameter≤1mm；Metallic aluminium, granular metal beryllium and granular metal scandium are preheated to into 350
DEG C, respectively the first coverture for preparing, the second coverture are crushed and deposited in dry 4 hours in 105 DEG C of drying box；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, remaining metallic aluminium is added after granular metal beryllium fine melt, after metallic aluminium fine melt add step 2) in pretreatment
Granulated metal scandium, stirs, and then spreads one layer of second coverture and covers liquid level, in order to avoid pool burning occur and aoxidize existing
As；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Comparative example 3
A kind of aluminium alloy heat sink material suitable for LED, is formed by the alloying element melting of following mass percent：Beryllium
2.8%, balance of aluminium quality purity >=99.8%).
The preparation method of the described aluminium alloy heat sink material suitable for LED, comprises the following steps：
1) furnace charge prepares：Metallic aluminium, metallic beryllium are weighed according to required element proportioning, by weighed raw material gross mass
0.26% weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture is by mass percentage
Raw material be made up of carbon black 74% and vermiculite 26%；Second coverture raw material by mass percentage is by lime stone 38% and concavo-convex
Rod soil 62% is constituted；
2) furnace charge pretreatment：Ready metallic aluminium, metallic beryllium are carried out into oil removing, blast process, and metallic beryllium is crushed
Into the graininess of particle diameter≤1mm；Metallic aluminium and granular metal beryllium are preheated to into 350 DEG C, are covered prepare first respectively
Agent, the second coverture are crushed and deposited in 105 DEG C of drying box and be dried 4 hours；
3) melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2) middle preheating
82% metallic aluminium, be warming up to metallic aluminium and be molten into aluminium liquid, slag is dragged for immediately, then sprinkle the first coverture, be continuously heating to
1080 DEG C, the first coverture on aluminium liquid surface is removed, is subsequently adding step 2) the middle granular metal beryllium for pre-processing, fully
Stirring, after granular metal beryllium fine melt remaining metallic aluminium is added, and is stirred, and is then spread one layer of second coverture and is covered
Lid liquid level, in order to avoid there is pool burning and oxidative phenomena；
4) refining cast：Temperature is adjusted to into 760 DEG C, with carbon trichloride refining agent refining treatment is carried out, refining time is
28min, stirs repeatedly in refining process, and 18min is stood after refining, and finally temperature is adjusted to into 740 DEG C carries out dragging for slag, and dragging for will after slag
The aluminium alloy for preparing directly is poured in mould, the demoulding after cooling, and aluminium alloy heat sink material is obtained after finishing.
Under the conditions of 25 DEG C, to foregoing invention embodiment 1～5 and obtained in comparative example 1～3, aluminium alloy heat sink material enters
The test of row thermal conductivity, the result for measuring is as shown in table 1 below.
Additionally, with AZ91 magnesium alloys as contrast, aluminium is closed to foregoing invention embodiment 1～5 and obtained in comparative example 1～3
Golden heat sink material carries out thermal diffusivity test, and experimental condition is：5W LEDs, driving current 1000mA；Conduction time 87～
140min；Sampling interval 5s；Light direction level；Heat dissipation environment Indoor Natural convection current.Result of the test is as shown in table 1 below.
Can be seen that by data in table 1：Under the conditions of 25 DEG C, the thermal conductivity of aluminium alloy heat sink material prepared by the present invention is big
About 223～232W/ (mK)；Relative to AZ91 magnesium alloys, the junction temperature of the aluminium alloy heat sink material have dropped 1.94～
2.85 DEG C, 10000h light decays have dropped 1.96～2.53%, and service life extends 15.3～18.9%, show good dissipating
Hot property.
The performance comparison of each group of table 1
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity those skilled in the art should
Using specification as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (1)
1. a kind of preparation method of the aluminium alloy heat sink material suitable for LED, it is characterised in that the aluminium suitable for LED is closed
Golden heat sink material is formed by the alloying element melting of following mass percent：Beryllium 1.8～3.5%, scandium 0.10～0.12%, cadmium 0.03
～0.05%, balance of aluminium, quality purity >=99.8% of the aluminium；Its preparation method, comprises the following steps：
1）Furnace charge prepares：Metallic aluminium, metallic beryllium, metal scandium and cadmium metal are weighed according to required element proportioning, by weighed raw material
The 0.25～0.28% of gross mass weighs carbon trichloride refining agent, prepares the first coverture and the second coverture；First coverture
Raw material by mass percentage is made up of carbon black 70～78% and vermiculite 22～30%；Second coverture raw material by mass percentage
It is made up of lime stone 30～45% and attapulgite 55～70%；
2）Furnace charge is pre-processed：Ready metallic aluminium, metallic beryllium, metal scandium, cadmium metal are carried out into oil removing, blast process, and will
Metallic beryllium, metal scandium are ground into the graininess of particle diameter≤1mm；By metallic aluminium, cadmium metal, granular metal beryllium and granular metal
Scandium is preheated to 300～400 DEG C, respectively crushes the first coverture for preparing, the second coverture and deposits in 95～110 DEG C
It is dried 3～5 hours in drying box；
3）Melting is processed：Graphite crucible is put in smelting furnace and is preheated to after kermesinus, be initially charged in step 2）The 80 of middle preheating
～85% metallic aluminium, is warming up to metallic aluminium and is molten into aluminium liquid, and slag is dragged for immediately, then sprinkles the first coverture, is continuously heating to
1050～1100 DEG C, the first coverture on aluminium liquid surface is removed, be subsequently adding step 2）The granular metal of middle pretreatment
Beryllium, is sufficiently stirred for, and remaining metallic aluminium is added after granular metal beryllium fine melt, and step 2 is added after metallic aluminium fine melt）In locate in advance
The granular metal scandium of reason, is sufficiently stirred for, and after granular metal scandium fine melt cadmium metal is added, and stirs, and then spreads
One layer of second coverture covers liquid level；
4）Refining cast：Temperature is adjusted to into 750～780 DEG C, refining treatment is carried out with carbon trichloride refining agent, refining time is 25
～30min, stirs repeatedly in refining process, and 15～20min is stood after refining, finally temperature is adjusted to into 720～750 DEG C and is dragged for
Slag, drags for and directly pour into the aluminium alloy for preparing in mould after slag, and the demoulding after cooling obtains aluminium alloy after finishing
Heat sink material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107898.8A CN106636773B (en) | 2015-11-03 | 2015-11-03 | A kind of aluminium alloy heat sink material as well as preparation method and application thereof suitable for LED |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107898.8A CN106636773B (en) | 2015-11-03 | 2015-11-03 | A kind of aluminium alloy heat sink material as well as preparation method and application thereof suitable for LED |
| CN201510746527.3A CN105220023B (en) | 2015-11-03 | 2015-11-03 | Aluminum alloy heat dissipating material suitable for LEDs as well as preparing method and usage thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510746527.3A Division CN105220023B (en) | 2015-11-03 | 2015-11-03 | Aluminum alloy heat dissipating material suitable for LEDs as well as preparing method and usage thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106636773A true CN106636773A (en) | 2017-05-10 |
| CN106636773B CN106636773B (en) | 2018-07-27 |
Family
ID=54989288
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611107898.8A Active CN106636773B (en) | 2015-11-03 | 2015-11-03 | A kind of aluminium alloy heat sink material as well as preparation method and application thereof suitable for LED |
| CN201510746527.3A Expired - Fee Related CN105220023B (en) | 2015-11-03 | 2015-11-03 | Aluminum alloy heat dissipating material suitable for LEDs as well as preparing method and usage thereof |
| CN201611111837.9A Active CN106399763B (en) | 2015-11-03 | 2015-11-03 | It is a kind of suitable for LED aluminium alloy heat sink material as well as preparation method and application thereof |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510746527.3A Expired - Fee Related CN105220023B (en) | 2015-11-03 | 2015-11-03 | Aluminum alloy heat dissipating material suitable for LEDs as well as preparing method and usage thereof |
| CN201611111837.9A Active CN106399763B (en) | 2015-11-03 | 2015-11-03 | It is a kind of suitable for LED aluminium alloy heat sink material as well as preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106636773B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61163230A (en) * | 1985-01-09 | 1986-07-23 | Toshiba Corp | Bonding wire for semiconductor device |
| CN102409198A (en) * | 2011-11-04 | 2012-04-11 | 汪荃 | Yttrium alloy super heat-conducting material and super heat-conducting device |
| CN102465220A (en) * | 2010-11-19 | 2012-05-23 | 王健 | Modifying component for superconductive aluminum-base alloy radiating material and manufacturing method |
| CN104404279A (en) * | 2014-11-29 | 2015-03-11 | 江西洪都航空工业集团有限责任公司 | Aluminum-magnesium-beryllium intermediate alloy and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080085403A1 (en) * | 2006-10-08 | 2008-04-10 | General Electric Company | Heat transfer composite, associated device and method |
| KR101143899B1 (en) * | 2009-08-19 | 2012-05-11 | (주)상문 | An aluminum alloy for die casting having thermal conductivity |
-
2015
- 2015-11-03 CN CN201611107898.8A patent/CN106636773B/en active Active
- 2015-11-03 CN CN201510746527.3A patent/CN105220023B/en not_active Expired - Fee Related
- 2015-11-03 CN CN201611111837.9A patent/CN106399763B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61163230A (en) * | 1985-01-09 | 1986-07-23 | Toshiba Corp | Bonding wire for semiconductor device |
| CN102465220A (en) * | 2010-11-19 | 2012-05-23 | 王健 | Modifying component for superconductive aluminum-base alloy radiating material and manufacturing method |
| CN102409198A (en) * | 2011-11-04 | 2012-04-11 | 汪荃 | Yttrium alloy super heat-conducting material and super heat-conducting device |
| CN104404279A (en) * | 2014-11-29 | 2015-03-11 | 江西洪都航空工业集团有限责任公司 | Aluminum-magnesium-beryllium intermediate alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105220023B (en) | 2017-02-01 |
| CN106399763B (en) | 2018-03-23 |
| CN105220023A (en) | 2016-01-06 |
| CN106399763A (en) | 2017-02-15 |
| CN106636773B (en) | 2018-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Characterization and experimental investigation of aluminum nitride-based composite phase change materials for battery thermal management | |
| Xie et al. | Targeting cooling for quantum dots in white QDs‐LEDs by hexagonal boron nitride platelets with electrostatic bonding | |
| CN105296786B (en) | A kind of preparation method of aluminium base Graphene heat-conductive composite material sample | |
| EP3640536B1 (en) | Graphene heat-dissipation led lamp | |
| US9206565B2 (en) | Heating process and device for thermally regenerating waste asphalt mixture | |
| CN102251161A (en) | Heat conductive magnesium alloy | |
| Bai et al. | Effect of Ti addition on B removal during silicon refining in Al-30% Si alloy directional solidification | |
| Ban et al. | Solidification refining of MG-Si by Al-Si alloy under rotating electromagnetic field with varying frequencies | |
| CN104696832A (en) | Led street lamp | |
| CN102560210A (en) | Mg-Sn-Ca heat-conductive cast magnesium alloy | |
| CN103361502B (en) | Method for preparing aluminum-boron master alloy through chemical reaction method | |
| CN106399763B (en) | It is a kind of suitable for LED aluminium alloy heat sink material as well as preparation method and application thereof | |
| CN108971416A (en) | A kind of casting High-temperature-reseasyng easyng collapse precoated sand | |
| CN101635321B (en) | Method for manufacturing solar energy battery board frame section bar | |
| CN106756352B (en) | Raw Cr in one kind2B and MgO diphase particles strengthen the preparation method of magnesium-based composite material | |
| CN206607297U (en) | A kind of pure magnesium continuous refining furnace | |
| CN105112820B (en) | Quasi-resonance accelerates the aluminum matrix composite and preparation method of hot-fluid energy exchange | |
| CN111218561B (en) | Composite refining agent for reducing impurity element aluminum in waste brass and use method thereof | |
| CN1301170C (en) | Self straggle fast casting method used for battlefield emergency fast shaping of armoured car component part | |
| CN101942586B (en) | Aluminum alloy with high thermal conductivity | |
| CN104384482B (en) | A kind of method of primary silicon in refinement transcocrystallized Al-Si alloy | |
| CN105349857B (en) | A kind of magnesium alloy heat radiation material suitable for LED as well as preparation method and application thereof | |
| CN109554590A (en) | High thermal conductivity aluminum alloy materials and preparation method thereof | |
| CN101988163B (en) | Method for preparing Al-B intermediate alloy with high boron content | |
| CN204350546U (en) | A kind of efficient close tooth Section Bar Heat Sinks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180619 Address after: 438000 Hubei Macheng Economic Development Zone, Huanggang, Hubei (south of Jinling Road, west of Xingfa Road, east of Xinglong Road, north of Jinhong Road) Applicant after: Hubei Hua Hua materials Polytron Technologies Inc Address before: 230000 B-1512, west of Ganquan Road, Shushan District, Hefei, Anhui. Applicant before: Anhui Eagle Dragon Industrial Design Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |