CN113385902A - Heat dissipation plate and preparation method thereof - Google Patents
Heat dissipation plate and preparation method thereof Download PDFInfo
- Publication number
- CN113385902A CN113385902A CN202110805823.1A CN202110805823A CN113385902A CN 113385902 A CN113385902 A CN 113385902A CN 202110805823 A CN202110805823 A CN 202110805823A CN 113385902 A CN113385902 A CN 113385902A
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- Prior art keywords
- plate
- copper
- aluminum
- heat dissipation
- heat
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002360 explosive Substances 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052802 copper Inorganic materials 0.000 claims abstract description 34
- 239000010949 copper Substances 0.000 claims abstract description 34
- 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 3
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 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 12
- 238000001192 hot extrusion Methods 0.000 claims description 6
- 238000005474 detonation Methods 0.000 claims description 5
- 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
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation 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
- 238000003466 welding Methods 0.000 description 1
Images
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 invention relates to the technical field of heat dissipation plates, and specifically provides a heat dissipation plate and a preparation method thereof. The preparation method specifically includes: grinding the copper plate and the aluminum plate to remove oil stains, impurities and oxide layers on the surface of the copper and aluminum plates, to obtain the treated copper plate and the aluminum plate; placing the treated aluminum plate on a platform, and evenly arranging a plurality of A support frame, the subject of the treated copper plate is placed on the support frame, and low-speed explosives are laid for explosive compounding to obtain a copper-aluminum composite plate; after the copper-aluminum composite plate is cut, the aluminum end of the copper-aluminum composite plate is heated. Extrusion molding to obtain a heat sink. The explosion-compounded copper-aluminum composite plates are closely combined, and the heat conduction speed is fast. The heat sinks are distributed radiating from the inside out 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 operation time, so that the heat stress of materials is increased, the accelerated aging of components and the like are caused, the service life of the electrical equipment is greatly reduced, and therefore the heat dissipation plate is widely applied to the electrical equipment. In the prior art, the radiating fins and the substrate in the radiating plate are generally fixedly connected in a welding mode, and in addition, the radiating fins and the substrate are fixed in a sintering mode and 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 explosion cladding, and then the aluminum end is subjected to hot extrusion to obtain the radiating fin, so that the radiating fin which is radially distributed from inside to outside, light and high in heat conduction coefficient is obtained.
In order to achieve the above object, the present invention provides a method for manufacturing a heat dissipation plate, the method specifically includes:
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 the treated aluminum plate;
placing the processed aluminum plate on a platform, uniformly arranging a plurality of support frames, placing the processed copper plate on the support frames, and laying low-speed explosive for explosive cladding to obtain a copper-aluminum composite plate;
and cutting the copper-aluminum composite board, and performing hot extrusion molding on the aluminum end of the copper-aluminum composite board to obtain the heat dissipation plate.
Furthermore, the thickness of the aluminum plate is 10-15mm, and the thickness of the copper plate is 30-40 mm.
Further, the height of the support frame is 5-9 mm.
Further, the low-speed explosive is expanded ammonium nitrate, rock ammonium nitrate explosive No. 2, porous ammonium nitrate 94.5%, diesel oil 5.5%, powdery emulsion explosive and salt or TNT explosive, the dosage of the explosive is 2-5g/cm3, and the detonation velocity is 2000-3000 m/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, wherein the heat dissipation plate is prepared by the preparation method;
the heat dissipation plate comprises a heat dissipation bottom plate and heat dissipation fins;
the heat dissipation base plate is a copper plate, and the heat dissipation fins are aluminum sheets; the radiating fins are arranged in the radial direction and are distributed in a radial shape from inside to outside; 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 2-6 mm.
Further, the radiating fins are radially distributed from inside to outside and specifically comprise:
the radiating fins are divided into 4-8 groups, each group is positioned on an arc with the same radius, and the quantity of the radiating fins of each group from inside to outside is gradually increased.
Has the advantages that:
(1) the copper-aluminum composite plate is obtained by explosion cladding of the copper plate and the aluminum plate, then the aluminum end is subjected to hot extrusion to obtain the corresponding aluminum radiating fin, the explosion clad copper-aluminum composite plate is tightly combined, the heat conduction is fast, the radiating fins are radially arranged and radially distributed from inside to outside, the number of the radiating fins is gradually increased from inside to outside, the radiating rate of the outer side is fast, and the heat of the inner side is easily transferred to the outer side, so that the fast heat radiation is realized.
(2) The preparation method of the radiating fin obtains the copper-aluminum composite plate through the explosion cladding process, can obtain the radiating plate with any shape through shearing, is suitable for different application environments, and forms the radiating fin diffused from inside to outside through hot extrusion by a grinding tool, and has one-step forming and simple preparation process.
Drawings
Fig. 1 is a schematic view of a heat dissipation plate according to an embodiment of the present invention;
fig. 2 is a schematic view of the distribution of the heat dissipation fins of the circular heat dissipation plate according to the embodiment of the present invention;
fig. 3 is a schematic view of the distribution of the heat dissipation fins of the square heat dissipation plate according to the embodiment of the present invention.
[ description of reference ]
1. A heat sink; 2. a heat dissipation base plate.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to specific embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all terms of art 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 limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.
In an embodiment of the present invention, a method for manufacturing a heat dissipation plate includes the following steps:
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 the treated aluminum plate; placing the treated aluminum plate on a platform, uniformly arranging a plurality of red copper support frames, placing the treated copper plate on the support frames, and laying low-speed explosives which are expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5% of porous ammonium nitrate, 5.5% of diesel oil, powdery emulsion explosive and salt or TNT explosive, wherein the laying amount of the explosives is 2-5g/cm3Detonating from the middle part of the explosive, and performing explosive compounding at the detonation velocity of 2000-3000m/s to obtain copperAn aluminum composite panel; cutting the copper-aluminum composite board into a required heat dissipation plate shape, such as a round shape, a square shape or other special shapes, so as to meet the heat dissipation requirements of different electrical equipment, and performing extrusion forming on the aluminum end of the cut copper-aluminum composite board at the temperature of 450 ℃ and 500 ℃ to obtain the heat dissipation plate shown in the figures 1-3, wherein the heat dissipation plate comprises a heat dissipation bottom plate 2 and a heat dissipation fin 1; the radiating base plate is a copper plate, the thickness of the radiating base plate is 30-40mm, the radiating fins 1 are aluminum sheets, the radiating fins 1 are radially arranged and radially distributed from inside to outside, the radiating fins are divided into 4-8 groups, each group is positioned on an arc with the same radius, the number of the radiating fins of each group from inside to outside is gradually increased, the height of each radiating fin 1 is 60-100mm, and the thickness of each radiating fin is 2-6 mm.
The following examples are further illustrative.
Example 1
This embodiment provides a circular shape heating panel, comprises radiating bottom plate 2 and fin 1, adopts 30 mm's copper and 13 mm's aluminum plate to polish earlier and removes greasy dirt, impurity and oxide layer on copper, aluminum sheet material surface, obtains to handle back copper and aluminum plate, will handle back aluminum plate and arrange in on the platform to evenly lay the high red copper support frame of a plurality of 8mm, will handle the back copper and arrange in on the support frame, and lay the low-speed explosive: expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5 percent of porous ammonium nitrate and 5.5 percent of diesel oil, powdery emulsion explosive and salt or TNT explosive, wherein the laying amount of the explosive is 4g/cm3Detonating from the middle part of the explosive, carrying out explosive cladding under the condition that the detonation velocity is 2200m/s to obtain a copper-aluminum explosive composite plate, cutting the copper-aluminum explosive composite plate into a circular plate, extruding the aluminum end of the copper-aluminum explosive composite plate into radiating fins arranged as shown in figure 2 by adopting a circular mould under the condition that the temperature is 480 ℃, and obtaining the circular radiating plate.
Example 2
This embodiment provides a square heating panel, comprises radiating bottom plate 2 and fin 1, adopts 35 mm's copper and 14 mm's aluminum plate to polish earlier and removes greasy dirt, impurity and oxide layer on copper, aluminum sheet material surface, obtains to handle back copper and aluminum plate, will handle back aluminum plate and arrange in on the platform to evenly lay a plurality of high 7 mm's of 7mmThe red copper support frame is used for placing the treated copper plate on the support frame and paving low-speed explosive: expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5 percent of porous ammonium nitrate and 5.5 percent of diesel oil, powdery emulsion explosive and salt or TNT explosive, wherein the laying amount of the explosive is 2g/cm3Detonating from the middle part of the explosive, carrying out explosive cladding under the condition that the detonation velocity is 2200m/s to obtain a copper-aluminum explosive composite board, cutting the copper-aluminum explosive composite board into square boards, and extruding the aluminum ends of the copper-aluminum explosive composite board into radiating fins arranged as shown in figure 3 by adopting a square mould under the condition that the temperature is 500 ℃.
The above-mentioned 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 considered as the technical scope of the present invention, and equivalents and modifications of the technical solutions and concepts of the present invention should be covered by the scope of the present invention.
Claims (8)
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 |
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| Publication Number | Publication Date |
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| CN113385902A true CN113385902A (en) | 2021-09-14 |
| CN113385902B CN113385902B (en) | 2024-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN113385902B (en) | 2024-12-31 |
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