CN115156863B - Forming method of heat dissipation plate with dense fins and side walls - Google Patents
Forming method of heat dissipation plate with dense fins and side walls Download PDFInfo
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- CN115156863B CN115156863B CN202211002721.7A CN202211002721A CN115156863B CN 115156863 B CN115156863 B CN 115156863B CN 202211002721 A CN202211002721 A CN 202211002721A CN 115156863 B CN115156863 B CN 115156863B
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- fins
- side walls
- bottom plate
- forging
- plate
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 238000005242 forging Methods 0.000 claims abstract description 23
- 238000003801 milling Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method 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
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- 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
-
- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/10—Heat sinks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the technical field of stamping processing, and relates to a forming method of a dense-fin radiating plate with side walls, which is used for manufacturing a radiating plate with a bottom plate, a plurality of fins and side walls integrally formed, wherein the fins are arranged on the front surface of the bottom plate in parallel, and the side walls surround all the fins, and the method comprises the following steps: and manufacturing the fins on the bottom plate by a relieved tooth or rolling method, milling the upper surface of the edge range of the bottom plate to form a region to be processed surrounding all the fins, heating and softening the bottom plate, forging and pressing the upper surface of the region to be processed, and then arching to form side walls surrounding all the fins. The method divides the formation of the fins and the formation of the side walls into two main steps, firstly forms the denser fins by utilizing a relieved tooth or rolling mode, and then mills the outer side to be flat so as to extrude the side walls, thereby realizing that the heat dissipation plate simultaneously has the dense fins and the side walls.
Description
Technical Field
The invention relates to the technical field of stamping processing, in particular to a forming method of a heat dissipation plate with a dense fin and a side wall.
Background
Heat sinks are auxiliary components that help high power electronics dissipate heat, often with thermally conductive structures that increase surface area. It is a heat transfer to a thermally conductive structure through the high thermal conductivity of certain metals, and then uses a flowing gas or liquid to dissipate the heat to avoid burning out the electronic components due to elevated temperatures. The water-cooled radiator is generally box-shaped with one end entering and one end exiting, and the heat conducting structure thereof forms a flow passage with a larger side wall area therein, and then takes heat away when the cooling liquid flows through the flow passage.
There is a need to manufacture a heat sink having fins and side walls, wherein the side walls are of a thicker construction having a thickness greater than 1mm, and a relatively efficient and economical method for forming the side walls during the manufacture of the heat sink is an extrusion process by heating and softening the bottom plate of the heat sink and then ironing it while bulging it at other locations, thus obtaining the side wall construction. If the fins are also thicker structures, even if the structures are complex, the fins can be synchronously formed in the extrusion process, such as the processing method of the radiating fins disclosed in Chinese patent CN 110340198A; however, the fins here need to be a thin, dense sheet-like structure that cannot be obtained using an extrusion process. Because the structure on the extrusion die is too narrow, the extrusion die breaks.
It is therefore necessary to devise a new molding method for a heat sink having both sidewalls and denser fins.
Disclosure of Invention
The invention mainly aims to provide a forming method of a dense-fin heat dissipation plate with side walls, which can manufacture a heat dissipation plate with side walls and dense fins.
The invention realizes the aim through the following technical scheme: a forming method of a dense-fin heat dissipation plate with side walls is used for manufacturing a heat dissipation plate with a bottom plate, a plurality of fins and side walls integrally formed, the fins are arranged in parallel on the front surface of the bottom plate, the side walls surround all the fins, and the method comprises the following steps:
S1, relieving: preparing a strip-shaped plate, conveying the strip-shaped plate along the length direction of the strip-shaped plate, and manufacturing a plurality of fins with equal height on the upper surface of the strip-shaped plate by a relieved tooth method, wherein the fins are connected to a bottom plate;
s2, slitting: cutting the bottom plate according to the required length to form a preformed body;
s3, edge milling: milling the upper surface of the edge range of the bottom plate to form a region to be processed surrounding all fins;
s4, forging and pressing: and heating and softening the bottom plate, forging and pressing the upper surface of the area to be processed, and then arching to form side walls surrounding all fins.
Specifically, the thickness of the fin is 0.5-0.8mm, the spacing is 0.6-0.8mm, and the height is 20-100mm.
Specifically, the periphery of the side wall formed in the forging step is also provided with a flange.
Further, the forging step may be followed by a drilling step that drills mounting holes in the flange.
A forming method of a dense-fin heat dissipation plate with side walls is used for manufacturing a heat dissipation plate with a bottom plate, a plurality of fins and side walls integrally formed, the fins are arranged in parallel on the front surface of the bottom plate, the side walls surround all the fins, and the method comprises the following steps:
s1, cold pressing: preparing a raw material, and adopting a rolling mode to deform the raw material into a structure with a plurality of fins arranged in parallel on a bottom plate;
S2, cutting flat: flattening the top and the side edges of the fins to enable the heights of the fins to be level;
S3, edge milling: milling the upper surface of the edge range of the bottom plate to form a preformed body, wherein the preformed body is provided with a region to be processed surrounding all fins;
s4, forging and pressing: and heating and softening the bottom plate, forging and pressing the upper surface of the area to be processed, and then arching to form side walls surrounding all fins.
Specifically, the thickness of the fin is 0.5-0.8mm, the spacing is 0.6-0.8mm, and the height is 20-100mm.
Specifically, the periphery of the side wall formed in the forging step is also provided with a flange.
Further, the forging step may be followed by a drilling step that drills mounting holes in the flange.
The technical scheme of the invention has the beneficial effects that:
The method divides the formation of the fins and the formation of the side walls into two main steps, firstly forms the denser fins by utilizing a relieved tooth or rolling mode, and then mills the outer side to be flat so as to extrude the side walls, thereby realizing that the heat dissipation plate simultaneously has the dense fins and the side walls.
Drawings
FIG. 1 is a variation of the sheet material of example 1;
FIG. 2 is a variation of the sheet material of example 2;
FIG. 3 is a graph showing the variation of the material of example 3;
Fig. 4 is a graph showing the change of the material of example 4.
Marked in the figure as:
1-bottom plate, 2-fin, 3-side wall, 4-panel, 5-preformed body, 6-area to be processed, 7-raw material, 8-flange and 9-mounting hole.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1:
As shown in fig. 1, a forming method of a heat dissipation plate with dense fins and side walls is used for manufacturing a heat dissipation plate integrally formed by a bottom plate 1, a plurality of fins 2 and side walls 3, wherein the fins 2 are arranged in parallel on the front surface of the bottom plate 1, and the side walls 3 surround all the fins 2, and the steps include:
s1, relieving: preparing a strip-shaped plate 1, conveying the plate along the length direction of the plate, and making a plurality of fins 2 with equal height on the upper surface of the plate by a relieved tooth method, wherein the fins 2 are connected to the bottom plate 1;
s2, slitting: cutting the base plate 1 to a desired length to form a preform 5;
S3, edge milling: milling the upper surface of the marginal region of the base plate 1 to form a preform 5, the preform 5 having a region 6 to be processed surrounding all of the fins 2;
S4, forging and pressing: the bottom plate 1 is heated to soften, the upper surface of the area 6 to be processed is forged and then arched to form the side wall 3 surrounding all fins 2.
Example 2:
As shown in fig. 2, a forming method of a heat dissipation plate with dense fins and side walls is used for manufacturing a heat dissipation plate integrally formed by a bottom plate 1, a plurality of fins 2 and side walls 3, wherein the fins 2 are arranged in parallel on the front surface of the bottom plate 1, the side walls 3 surround all the fins 2, the periphery of the side walls 3 is also provided with a flange 4, a plurality of mounting holes 5 are arranged on the flange 4, and the steps comprise:
s1, relieving: preparing a strip-shaped plate 1, conveying the plate along the length direction of the plate, and making a plurality of fins 2 with equal height on the upper surface of the plate by a relieved tooth method, wherein the fins 2 are connected to the bottom plate 1;
s2, slitting: cutting the base plate 1 to a desired length to form a preform 5;
S3, edge milling: milling the upper surface of the marginal region of the base plate 1 to form a preform 5, the preform 5 having a region 6 to be processed surrounding all of the fins 2;
S4, forging and pressing: heating and softening the bottom plate 1, forging and pressing the upper surface of the area to be processed 6, and then arching into side walls 3 surrounding all fins 2, wherein the periphery of the side walls 3 is also provided with flanges 8;
S5, drilling: four mounting holes 9 are drilled in the flange 8.
The plurality of flanges 8 of the heat dissipating plate can be fixed to a member to be heat-dissipated by the mounting holes 9, and the number of the mounting holes 9 is not limited, and a plurality of the flanges may be provided on each side. The flange 8 may also be fastened to the heat-dissipating component in other ways.
Example 3:
As shown in fig. 3, a forming method of a heat dissipation plate with dense fins and side walls is used for manufacturing a heat dissipation plate integrally formed by a bottom plate 1, a plurality of fins 2 and side walls 3, wherein the fins 2 are arranged in parallel on the front surface of the bottom plate 1, the side walls 3 surround all the fins 2, the periphery of the side walls 3 is also provided with a flange 4, a plurality of mounting holes 5 are arranged on the flange 4, and the steps comprise:
S1, cold pressing: preparing a piece of raw material 7, and deforming the raw material 7 into a structure with a plurality of fins 2 arranged in parallel on a bottom plate 1 by adopting a rolling mode (the structure after cold pressing is unstable, so the structure after cold pressing is not shown in the figure);
S2, cutting flat: the top and the side edges of the fin 2 are flattened, so that the height of the fin 2 is leveled;
S3, edge milling: milling the upper surface of the marginal region of the base plate 1 to form a preform 5, the preform 5 having a region 6 to be processed surrounding all of the fins 2;
S4, forging and pressing: the bottom plate 1 is heated to soften, the upper surface of the area 6 to be processed is forged and then arched to form the side wall 3 surrounding all fins 2.
Example 4:
As shown in fig. 4, a forming method of a heat dissipation plate with dense fins and side walls is used for manufacturing a heat dissipation plate integrally formed by a bottom plate 1, a plurality of fins 2 and side walls 3, wherein the fins 2 are arranged in parallel on the front surface of the bottom plate 1, the side walls 3 surround all the fins 2, the periphery of the side walls 3 is also provided with a flange 4, a plurality of mounting holes 5 are arranged on the flange 4, and the steps comprise:
S1, cold pressing: preparing a piece of raw material 7, and deforming the raw material 7 into a structure with a plurality of fins 2 arranged in parallel on a bottom plate 1 by adopting a rolling mode (the structure after cold pressing is unstable, so the structure after cold pressing is not shown in the figure);
S2, cutting flat: the top and the side edges of the fin 2 are flattened, so that the height of the fin 2 is leveled;
S3, edge milling: milling the upper surface of the marginal region of the base plate 1 to form a preform 5, the preform 5 having a region 6 to be processed surrounding all of the fins 2;
S4, forging and pressing: heating and softening the bottom plate 1, forging and pressing the upper surface of the area to be processed 6, and then arching into side walls 3 surrounding all fins 2, wherein the periphery of the side walls 3 is also provided with flanges 8;
S5, drilling: four mounting holes 9 are drilled in the flange 8.
The plurality of flanges 8 of the heat dissipating plate can be fixed to a member to be heat-dissipated by the mounting holes 9, and the number of the mounting holes 9 is not limited, and a plurality of the flanges may be provided on each side. The flange 8 may also be fastened to the heat-dissipating component in other ways.
The method divides the formation of the fins 2 and the formation of the side walls 3 into two main steps, firstly forms the denser fins 2 by utilizing a relieved tooth or rolling mode, and then mills the outer side to be flat so as to extrude the side walls 3, thereby realizing that the heat dissipation plate simultaneously has the dense fins 2 and the side walls 3.
In the above embodiments 1 to 4, the fin 2 has a thickness of 0.5 to 0.8mm, a pitch of 0.6 to 0.8mm, and a height of 20 to 100mm. The heat dissipation plate can be made into a box-shaped structure which is favorable for passing cooling liquid, and the fins 2 can greatly increase the heat exchange surface and improve the heat exchange efficiency.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (6)
1. A molding method of a heat dissipation plate with a dense fin and a side wall is characterized in that: the heat dissipation plate is used for manufacturing a bottom plate, a plurality of fins and side walls which are integrally formed, the fins are arranged on the front surface of the bottom plate in parallel, the side walls surround all the fins, and the method comprises the following steps:
S1, relieving: preparing a strip-shaped plate, conveying the strip-shaped plate along the length direction of the strip-shaped plate, and manufacturing a plurality of fins with equal height on the upper surface of the strip-shaped plate by a relieved tooth method, wherein the fins are connected to a bottom plate;
s2, slitting: cutting the bottom plate according to the required length to form a preformed body;
s3, edge milling: milling the upper surface of the edge range of the bottom plate to form a region to be processed surrounding all fins;
S4, forging and pressing: and heating and softening the bottom plate, forging and pressing the upper surface of the area to be processed, and then arching to form side walls surrounding all fins, wherein the periphery of the side walls formed in the forging and pressing step is also provided with a flange.
2. The method for forming the dense-fin heat sink with side walls according to claim 1, wherein: the thickness of the fin is 0.5-0.8mm, the interval is 0.6-0.8mm, and the height is 20-100mm.
3. The method for forming the dense-fin heat sink with side walls according to claim 1, wherein: the forging step may be followed by a drilling step that drills mounting holes in the flange.
4. A molding method of a heat dissipation plate with a dense fin and a side wall is characterized in that: the heat dissipation plate is used for manufacturing a bottom plate, a plurality of fins and side walls which are integrally formed, the fins are arranged on the front surface of the bottom plate in parallel, the side walls surround all the fins, and the method comprises the following steps:
s1, cold pressing: preparing a raw material, and adopting a rolling mode to deform the raw material into a structure with a plurality of fins arranged in parallel on a bottom plate;
S2, cutting flat: flattening the top and the side edges of the fins to enable the heights of the fins to be level;
S3, edge milling: milling the upper surface of the edge range of the bottom plate to form a preformed body, wherein the preformed body is provided with a region to be processed surrounding all fins;
S4, forging and pressing: and heating and softening the bottom plate, forging and pressing the upper surface of the area to be processed, and then arching to form side walls surrounding all fins, wherein the periphery of the side walls formed in the forging and pressing step is also provided with a flange.
5. The method for forming the dense-fin heat sink with side walls according to claim 4, wherein: the thickness of the fin is 0.5-0.8mm, the interval is 0.6-0.8mm, and the height is 20-100mm.
6. The method for forming the dense-fin heat sink with side walls according to claim 4, wherein: the forging step may be followed by a drilling step that drills mounting holes in the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002721.7A CN115156863B (en) | 2022-08-19 | 2022-08-19 | Forming method of heat dissipation plate with dense fins and side walls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002721.7A CN115156863B (en) | 2022-08-19 | 2022-08-19 | Forming method of heat dissipation plate with dense fins and side walls |
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| Publication Number | Publication Date |
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| CN115156863A CN115156863A (en) | 2022-10-11 |
| CN115156863B true CN115156863B (en) | 2024-05-07 |
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| CN202211002721.7A Active CN115156863B (en) | 2022-08-19 | 2022-08-19 | Forming method of heat dissipation plate with dense fins and side walls |
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| CN115156863A (en) | 2022-10-11 |
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