CN113385902B - Radiating plate and preparation method thereof - Google Patents
Radiating plate and preparation method thereof Download PDFInfo
- Publication number
- CN113385902B CN113385902B CN202110805823.1A CN202110805823A CN113385902B CN 113385902 B CN113385902 B CN 113385902B CN 202110805823 A CN202110805823 A CN 202110805823A CN 113385902 B CN113385902 B CN 113385902B
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- Prior art keywords
- plate
- copper
- aluminum
- heat dissipation
- explosive
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000002360 explosive Substances 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 claims abstract description 35
- 239000010949 copper Substances 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 23
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 7
- 238000001192 hot extrusion Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000005474 detonation Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
- B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
本发明涉及散热板技术领域，具体提供了一种散热板及其制备方法。所述制备方法具体包括：将铜板和铝板进行打磨去除铜、铝板材表面的油污、杂质和氧化层，获得处理后铜板和铝板；将所述处理后铝板置于平台上，并均匀布设多个支撑架，将所述处理后铜板主语支撑架上，并铺设低速炸药进行爆炸复合获得铜铝复合板；将所述铜铝复合板进行切割后，将所述铜铝复合板的铝端进行热挤压成型获得散热板。经爆炸复合的铜铝复合板紧密结合，热传导速到快，其中散热片以由内向外辐射式分布，达到快速散热的效果。
The present invention relates to the technical field of heat sinks, and specifically provides a heat sink and a preparation method thereof. The preparation method specifically comprises: grinding copper plates and aluminum plates to remove oil stains, impurities and oxide layers on the surfaces of the copper and aluminum plates to obtain treated copper plates and aluminum plates; placing the treated aluminum plates on a platform, and evenly arranging a plurality of support frames, placing the treated copper plates on the support frames, and laying low-speed explosives for explosive compounding to obtain a copper-aluminum composite plate; cutting the copper-aluminum composite plate, and then hot-extruding the aluminum end of the copper-aluminum composite plate to obtain a heat sink. The explosively compounded copper-aluminum composite plates are tightly combined, and the heat conduction speed is fast, wherein the heat sinks are distributed in a radial manner from the inside to the outside, so as to achieve the effect of rapid heat dissipation.
Description
Technical Field
The invention relates to the technical field of heat dissipation plates, and particularly provides a heat dissipation plate and a preparation method thereof.
Background
In the use process of the electrical equipment, the temperature of the electrical equipment can rise along with the increase of the running time, so that a series of problems such as material thermal stress increase, accelerated aging of components and parts are caused, the service life of the electrical equipment is greatly reduced, and therefore, the heat dissipation plate is widely applied to various electrical equipment. In the prior art, the radiating fins in the radiating plate are generally fixedly connected with the base plate in a welding mode, and the radiating plates are fixed in a sintering mode and are connected by adopting heat-conducting glue.
Disclosure of Invention
Aiming at the problems in the prior art, the invention adopts the copper plate and the aluminum plate to obtain the copper-aluminum composite plate through explosive cladding, and then the aluminum end is subjected to hot extrusion to obtain the sheet of the radiating fin, so that the radiating plate with the radiating fin radially distributed from inside to outside and light weight and high heat conduction coefficient is obtained.
In order to achieve the above object, the present invention provides a method for manufacturing a heat dissipating plate, including:
polishing the copper plate and the aluminum plate to remove oil stains, impurities and oxide layers on the surfaces of the copper plate and the aluminum plate to obtain the treated copper plate and aluminum plate;
Placing the treated aluminum plate on a platform, uniformly arranging a plurality of supporting frames, placing the treated copper plate on the supporting frames, and paving low-speed explosive for explosion and compounding to obtain a copper-aluminum composite plate;
And cutting the copper-aluminum composite plate, and performing hot extrusion molding on the aluminum end of the copper-aluminum composite plate to obtain the heat dissipation plate.
Further, the thickness of the aluminum plate is 10-15mm, and the thickness of the copper plate is 30-40mm.
Further, the height of the support frame is 5-9mm.
Further, the low-speed explosive is expanded ammonium nitrate, no. 2 rock ammonium nitrate, 94.5% porous ammonium nitrate, 5.5% diesel oil, powdery emulsion explosive and salt or TNT explosive, the dosage of the explosive is 2-5g/cm < 3 >, and the explosion speed is 2000-3000m/s.
Further, the temperature of the hot extrusion molding process is 450-500 ℃.
Based on the same inventive concept, the embodiment of the invention also provides a heat dissipation plate, which is prepared by the preparation method;
the heat dissipation plate comprises a heat dissipation bottom plate and heat dissipation fins;
the radiating bottom plate is a copper plate, the radiating fins are aluminum sheets, the radiating fins are radially arranged and radially distributed from inside to outside, and the radiating bottom plate is fixedly connected with the radiating fins.
Further, the height of the radiating fin is 60-100mm, and the thickness of the radiating fin is 2-6mm.
Further, the radiating fins are radially distributed from inside to outside, and specifically:
the cooling fins are divided into 4-8 groups, each group is positioned on the same radius arc, and the number of the cooling fins of each group from inside to outside is gradually increased.
The beneficial effects are that:
(1) According to the invention, the copper-aluminum composite board is obtained by explosive cladding of the copper plate and the aluminum plate, and then the aluminum end is subjected to hot extrusion to obtain the corresponding aluminum radiating fin, the explosive cladding copper-aluminum composite board is tightly combined, and the heat conduction speed is high, wherein the radiating fins are radially arranged and radially distributed from inside to outside, and the quantity of the radiating fins is gradually increased from inside to outside, so that the outer radiating rate is high, and the heat on the inner side is easy to transfer to the outer side, thereby realizing rapid radiating.
(2) According to the preparation method of the radiating fin, the copper-aluminum composite board is obtained through an explosion composite process, then the radiating plate with any shape can be obtained through shearing, the radiating fin is suitable for different application environments, the radiating fin which is diffused from inside to outside is formed through hot extrusion of the grinding tool, one-step molding is performed, and the preparation process is simple.
Drawings
FIG. 1 is a schematic view of a heat dissipating plate according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the distribution of heat sinks in a circular heat sink according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a heat dissipation fin distribution of a square heat dissipation plate according to an embodiment of the invention.
[ Reference numerals description ]
1. And 2, a radiating fin and a radiating bottom plate.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention more apparent, the following detailed description will be provided with reference to specific embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Unless otherwise specifically indicated, the various raw materials, instruments, equipment, etc. used in the present invention are commercially available or may be prepared by existing methods.
In the embodiment of the invention, the preparation method of the heat dissipation plate comprises the following steps:
The method comprises the steps of grinding copper plates and aluminum plates to remove greasy dirt, impurities and oxide layers on the surfaces of copper and aluminum plates to obtain treated copper and aluminum plates, placing the treated aluminum plates on a platform, uniformly arranging a plurality of red copper supporting frames, placing the treated copper plates on the supporting frames, paving low-speed explosive which is expanded ammonium nitrate, no.2 rock ammonium nitrate explosive, 94.5% porous ammonium nitrate and 5.5% diesel oil, powdery emulsion explosive and salt or TNT explosive, wherein the paving amount of the explosive is 2-5g/cm 3, detonating the explosive from the middle part, performing explosion compounding at the explosion speed of 2000-3000m/s to obtain copper-aluminum composite plates, cutting the copper-aluminum composite plates into required radiating plate shapes such as circles, squares or other special shapes so as to meet the radiating requirements of different electrical equipment, and performing extrusion molding on the aluminum ends of the cut copper-aluminum composite plates under the condition that the temperature is 450-500 ℃ to obtain the copper plates as shown in the graph 1-3, wherein the copper plates comprise a base plate 2 and radiating plates 1, the base plate is 30-40mm, the radiating plates are arranged radially inwards and outwards from the radiating plate 1-6 mm, the radiating plates are radially outwards from the radiating plate 1-6 mm, the radiating plate is gradually arranged radially, and each radiating plate is radially outwards from the radiating plate is 1-6 mm, and the radiating plate is gradually arranged radially outwards from the radiating plate is 1mm, and is gradually arranged.
The following is further illustrated by specific examples.
Example 1
The embodiment provides a circular radiating plate, which consists of a radiating bottom plate 2 and radiating fins 1, wherein a 30mm copper plate and a 13mm aluminum plate are firstly adopted to perform polishing to remove oil stains, impurities and oxide layers on the surfaces of copper and aluminum plates, a treated copper plate and an aluminum plate are obtained, the treated aluminum plate is placed on a platform, a plurality of 8mm high red copper supporting frames are uniformly distributed, the treated copper plate is placed on the supporting frames, low-speed explosive such as expanded ammonium nitrate, no.2 rock ammonium nitrate explosive, 94.5% porous ammonium nitrate, 5.5% diesel oil, powdery emulsion explosive and salt or TNT explosive is paved, the explosive paving amount is 4g/cm 3, detonation is performed from the middle part of the explosive, explosive compositing is performed under the condition that the detonation speed is 2200m/s, the copper-aluminum explosive composite plate is obtained, the copper-aluminum explosive composite plate is cut into circular plates, and the aluminum end of the copper-aluminum explosive composite plate is extruded into the radiating fins which are arranged as shown in fig. 2 by adopting a circular die at the temperature of 480 ℃ to obtain the circular radiating plate.
Example 2
The embodiment provides a square radiating plate, which consists of a radiating bottom plate 2 and radiating fins 1, wherein a 35mm copper plate and a 14mm aluminum plate are firstly adopted to perform polishing to remove oil stains, impurities and oxide layers on the surfaces of copper and aluminum plates, a treated copper plate and an aluminum plate are obtained, the treated aluminum plate is placed on a platform, a plurality of 7mm high red copper supporting frames are uniformly distributed, the treated copper plate is placed on the supporting frames, low-speed explosive such as expanded ammonium nitrate, no. 2 rock ammonium nitrate explosive, 94.5% porous ammonium nitrate, 5.5% diesel oil, powdery emulsion explosive and salt or TNT explosive is paved, the explosive paving amount is 2g/cm 3, detonation is performed from the middle part of the explosive, explosive compositing is performed under the condition that the detonation speed is 2200m/s, the copper-aluminum explosive composite plate is cut into square plates, and the aluminum end of the copper-aluminum explosive composite plate is extruded into radiating fins which are arranged as shown in fig. 3 by adopting a square die under the condition that the temperature is 500 ℃.
The above embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to apply equivalents and modifications according to the technical solution and the concept of the present invention within the scope of the present invention.
Claims (7)
1. The preparation method of the heat dissipation plate is characterized by comprising the following steps of:
polishing the copper plate and the aluminum plate to remove oil stains, impurities and oxide layers on the surfaces of the copper plate and the aluminum plate to obtain the treated copper plate and aluminum plate;
Placing the treated aluminum plate on a platform, uniformly arranging a plurality of supporting frames, placing the treated copper plate on the supporting frames, and paving low-speed explosive for explosion and compounding to obtain a copper-aluminum composite plate;
Cutting the copper-aluminum composite plate, and performing hot extrusion forming on the aluminum end of the copper-aluminum composite plate to obtain a heat dissipation plate;
the heat dissipation plate comprises a heat dissipation bottom plate and heat dissipation fins;
The heat dissipation base plate is a copper plate, the heat dissipation fins are aluminum sheets, the heat dissipation fins are radially arranged and radially distributed from inside to outside, the heat dissipation base plate is fixedly connected with the heat dissipation fins, the heat dissipation fins are divided into 4-8 groups, each group is located on an arc with the same radius, and the number of the heat dissipation fins of each group from inside to outside is gradually increased.
2. The method of manufacturing a heat dissipating plate according to claim 1, wherein the aluminum plate has a thickness of 10 to 15mm and the copper plate has a thickness of 30 to 40mm.
3. The method of manufacturing a heat dissipating plate according to claim 1, wherein the height of the support frame is 5-9mm.
4. The method for manufacturing a heat dissipating plate according to claim 1, wherein the low-speed explosive is expanded ammonium nitrate, no. 2 rock ammonium nitrate explosive, 94.5% porous ammonium nitrate and 5.5% diesel oil, powdered emulsion explosive and salt or TNT explosive, the explosive amount is 2-5g/cm 3, and the explosion speed is 2000-3000m/s.
5. The method of manufacturing a heat dissipating plate according to claim 1, wherein the temperature of the hot extrusion process is 450-500 ℃.
6. A heat dissipating plate, characterized in that the heat dissipating plate is produced by the production method according to any one of claims 1 to 5.
7. The heat dissipating plate according to claim 6, wherein the height of the heat dissipating fin is 60-100mm and the thickness of the heat dissipating fin is 2-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110805823.1A CN113385902B (en) | 2021-07-16 | 2021-07-16 | Radiating plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110805823.1A CN113385902B (en) | 2021-07-16 | 2021-07-16 | Radiating plate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN113385902A CN113385902A (en) | 2021-09-14 |
| CN113385902B true CN113385902B (en) | 2024-12-31 |
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| CN202110805823.1A Active CN113385902B (en) | 2021-07-16 | 2021-07-16 | Radiating plate and preparation method thereof |
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| CN114161083A (en) * | 2021-11-08 | 2022-03-11 | 界首市南都华宇电源有限公司 | Processing technology of storage battery grid |
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| CN102172660A (en) * | 2011-01-14 | 2011-09-07 | 华南理工大学 | Once-extrusion molding process of copper/aluminum composite section for radiator and device thereof |
| CN215735502U (en) * | 2021-07-16 | 2022-02-01 | 湖南方恒新材料技术股份有限公司 | Heat dissipation plate |
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| CN1189284C (en) * | 2002-01-04 | 2005-02-16 | 大连理工大学 | Composite metal material explosion welding technology with shape protection function |
| TWI242633B (en) * | 2004-06-15 | 2005-11-01 | Ind Tech Res Inst | Method for manufacturing aluminum copper cladding radiator |
| CN1739876A (en) * | 2004-08-27 | 2006-03-01 | 讯凯国际股份有限公司 | Aluminum Extrusion Die |
| AT9199U1 (en) * | 2005-09-13 | 2007-06-15 | Plansee Se | MATERIAL COMPOSITE WITH EXPLOSION-WELDED INTERMEDIATE PIECE |
| CN102527758B (en) * | 2012-01-20 | 2014-12-03 | 东莞汉旭五金塑胶科技有限公司 | Extrusion moulding die for aluminum base of radiator and manufacture method thereof |
| CN102883588B (en) * | 2012-09-29 | 2015-09-09 | 浙江海威照明科技有限公司 | A kind of composite heat sink |
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| CN105081549B (en) * | 2015-08-28 | 2017-09-29 | 吕冰 | A kind of radiator manufacturing process |
| CN205726853U (en) * | 2016-06-16 | 2016-11-23 | 郑州宇光复合材料有限公司 | A kind of copper aluminum efficient radiator fin |
| CN207521443U (en) * | 2017-12-07 | 2018-06-22 | 四川兰德斯达铝业有限公司 | A kind of aluminium panels extrusion die fast-speed cooling bath |
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| CN101347867A (en) * | 2007-07-20 | 2009-01-21 | 洛阳双瑞金属复合材料有限公司 | Method for producing aluminum-copper duplex metal compound weldment |
| CN102172660A (en) * | 2011-01-14 | 2011-09-07 | 华南理工大学 | Once-extrusion molding process of copper/aluminum composite section for radiator and device thereof |
| CN215735502U (en) * | 2021-07-16 | 2022-02-01 | 湖南方恒新材料技术股份有限公司 | Heat dissipation plate |
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| CN113385902A (en) | 2021-09-14 |
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