CN113909725A - Welding method for applying copper water heat pipe to aluminum plate - Google Patents
Welding method for applying copper water heat pipe to aluminum plate Download PDFInfo
- Publication number
- CN113909725A CN113909725A CN202111222933.1A CN202111222933A CN113909725A CN 113909725 A CN113909725 A CN 113909725A CN 202111222933 A CN202111222933 A CN 202111222933A CN 113909725 A CN113909725 A CN 113909725A
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- Prior art keywords
- heat pipe
- groove
- welding method
- shell
- welding
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The invention relates to a welding method of a copper-water heat pipe applied to an aluminum plate, belonging to the technical field of heat dissipation of satellite payload high-heat-consumption components and parts; pressing the cylindrical heat pipe into a flat heat pipe, and realizing that the flatness of the outer wall of the flat heat pipe meets the requirement; polishing the oxide on the surface of the flat heat pipe by using sand paper; the upper surface of the shell is provided with a groove with a special-shaped trend, and the section of the groove is rectangular; the outer edges of the upper surface and the lower surface of the shell are coated by adhesive tapes for protection; cutting the soldering lug into a shape corresponding to the direction of the groove, flattening the soldering lug, and placing the flattened soldering lug at the bottom of the groove; horizontally placing the shell on the upper surface of the lower pressing plate; placing the heat pipe in the groove along the direction of the groove; an upper pressure plate is covered on the upper surface of the shell; clamping the upper clamping tool at the outer edges of the upper pressing plate and the lower pressing plate to form an integral tool; placing the whole tool in welding equipment for welding to complete the welding of the heat pipe and the shell; the invention meets the heat dissipation requirement of high-power devices.
Description
Technical Field
The invention belongs to the technical field of heat dissipation of satellite payload large-heat-loss components and parts, and relates to a welding method for applying a copper-water heat pipe to an aluminum plate.
Background
The project is derived from the development of data processors of products of multiple models, the data transmission rate of the single machine is high, the task processing is complex, the heat consumption of a single board is more than 35W, and the heat dissipation requirement cannot be met by adopting the traditional heat dissipation mode of a heat dissipation fin type. In order to solve the heat dissipation problem, the heat pipe, the heat dissipation boss and the heat conduction pad are adopted for heat dissipation of the device, and under the general condition, when the high-power single machine heat vacuum and heat circulation test of the effective load in the cabin is carried out, the temperature of a single machine installation surface is-35 to +70 ℃, and the temperature of a heat pipe installation position can reach 100 ℃. The aluminum-ammonia heat pipe is generally used at a temperature of-60 to +60 ℃, the working temperature of the single heat pipe exceeds the high-temperature limit of the aluminum-ammonia heat pipe, and the aluminum-ammonia heat pipe can not meet the requirements of heat transfer capacity and isothermality and even can be irreversibly damaged (burst) when working at the temperature, so that the aluminum-ammonia channel heat pipe is not suitable for heat dissipation of devices in a high-power load single machine. The use temperature of the copper water heat pipe is +5 to +230 ℃, and the high-temperature performance of the copper water heat pipe meets the single-machine heat dissipation requirement; when the temperature of the single machine is low, the copper water heat pipe can meet the heat dissipation requirement of the single machine without working (at the moment, the copper water heat pipe does not play a heat transfer role and is not damaged), and the copper water groove heat pipe is selected as a heat dissipation element of the single machine in consideration of the main purpose that the high-power single machine of the effective load in the cabin uses the heat pipe to dissipate heat at high temperature.
The problems of large thermal contact resistance, poor contact and the like exist between the copper-water heat pipe and the shell through the heat conducting pad or when the copper-water heat pipe is in direct contact with the shell, but the problems of large thermal contact resistance, poor contact and the like can be solved by a welding method of applying the copper-water heat pipe to an aluminum plate at present.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects in the prior art are overcome, the welding method of the copper-water heat pipe applied to the aluminum plate is provided, and the heat dissipation requirement of a high-power device is met.
The technical scheme of the invention is as follows:
a welding method of a copper water heat pipe applied to an aluminum plate comprises the following steps:
step one, pressing a cylindrical heat pipe into a flat heat pipe, and realizing that the flatness of the outer wall of the flat heat pipe meets the requirement;
secondly, polishing the oxide on the surface of the flat heat pipe by using sand paper;
thirdly, grooves with special-shaped trends are formed in the upper surface of the machine shell, and the cross sections of the grooves are rectangular;
step four, coating the outer edges of the upper surface and the lower surface of the shell with an adhesive tape for protection;
cutting the soldering lug into a shape corresponding to the direction of the groove, flattening the soldering lug, and placing the flattened soldering lug at the bottom of the groove;
step six, horizontally placing the shell on the upper surface of the lower pressing plate; placing the heat pipe in the groove along the direction of the groove; an upper pressure plate is covered on the upper surface of the shell;
seventhly, clamping an upper clamping tool at the outer edges of the upper pressing plate and the lower pressing plate to form an integral tool;
and step eight, placing the whole tool in welding equipment for welding to complete the welding of the heat pipe and the shell.
In the above welding method of applying the copper-water heat pipe to the aluminum plate, in the first step, the cylindrical heat pipe is pressed into the flat heat pipe by using the hot press, and the thickness of the flat heat pipe after pressing is 3 mm.
In the above welding method of applying the copper-water heat pipe to the aluminum plate, in the first step, the flatness of the flattened heat pipe after pressing is not greater than 0.1 mm.
In the third step of the welding method for applying the copper-water heat pipe to the aluminum plate, the case is of an aluminum-silver plated plate structure.
In the welding method of the copper-water heat pipe applied to the aluminum plate, the width of the groove is 1-2mm larger than that of the heat pipe.
In the above welding method for applying the copper-water heat pipe to the aluminum plate, in the fifth step, the soldering lug is made of Sn62Pb36Ag2 material.
After the copper-water heat pipe is applied to the welding method of the aluminum plate, the thickness of the soldering lug is smaller than the depth of the groove, and the thickness of the soldering lug is 0.5-1mm smaller than the thickness of the heat pipe.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention solves the heat dissipation method of the high-power-consumption component of the payload single machine under vacuum;
(2) the invention ensures the welding consistency of the heat pipe, can improve the welding efficiency and ensure the welding quality;
(3) the invention has simple and practical operation and is suitable for the heat dissipation requirement of batch products.
Drawings
FIG. 1 is a top view of the housing of the present invention;
fig. 2 is a cross-sectional view of the overall tool of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
The invention provides a welding process of a copper-water heat pipe applied to an aluminum plate, which meets the heat dissipation requirement of a high-power device. Compared with the traditional heat dissipation mode, the heat conductivity coefficient of the original aluminum alloy is increased to 104-105W/(m-K) from 188W/(m-K), which is hundreds times or thousands times of that of the common metal material, so that the heat dissipation difficulty of the components in the vacuum environment is improved, and the heat dissipation requirement of a single machine is met.
The welding method of the copper water heat pipe applied to the aluminum plate specifically comprises the following steps:
step one, pressing a cylindrical heat pipe into a flat heat pipe by using a hot press, wherein the thickness of the flat heat pipe after pressing is 3mm, and the flatness of the outer wall of the flat heat pipe 1 meets the requirement; the flatness of the flattened heat pipe after pressing is not more than 0.1 mm.
And step two, polishing the oxide on the surface of the flat heat pipe 1 by using sand paper.
Step three, a groove 21 with a special-shaped trend is arranged on the upper surface of the shell 2, and as shown in fig. 1, the section of the groove 21 is rectangular; the case 2 is made of an aluminum-plated silver plate. The width of the groove 21 is larger than that of the heat pipe 11-2 mm.
And step four, coating the outer edges of the upper surface and the lower surface of the shell 2 by using an adhesive tape for protection.
Step five, cutting the soldering lug into a shape corresponding to the trend of the groove 21, flattening the soldering lug, and placing the flattened soldering lug at the bottom of the groove 21; the soldering lug is made of Sn62Pb36Ag2 material. After cutting, the thickness of the soldering lug is smaller than the depth of the groove 21, and the thickness of the soldering lug is smaller than the thickness of the heat pipe 1 by 0.5-1 mm.
Step six, horizontally placing the shell 2 on the upper surface of the lower pressing plate 3; placing the heat pipe 1 in the groove 21 along the direction of the groove 21; an upper pressure plate 4 is covered on the upper surface of the casing 2.
And seventhly, clamping the upper clamping tool 5 at the outer edges of the upper pressing plate 4 and the lower pressing plate 3 to form an integral tool, as shown in fig. 2.
And step eight, placing the whole tool in welding equipment for welding to complete the welding of the heat pipe 1 and the shell 2.
And step nine, cleaning the soldering flux by using an absolute ethyl alcohol non-woven fabric.
Compared with the prior art that the heat pipe is fixed on the metal material by using the heat conduction silicone grease and the heat pipe is welded on the metal material by using the welding flux, the heat conduction efficiency of the heat pipe welded on the metal material by using the welding flux is high, and the reliability of the heat dissipation effect is also improved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (7)
1. A welding method of a copper water heat pipe applied to an aluminum plate is characterized in that: the method comprises the following steps:
step one, pressing a cylindrical heat pipe (1) into a flat heat pipe, and realizing that the flatness of the outer wall of the flat heat pipe (1) meets the requirement;
secondly, polishing the oxide on the surface of the flat heat pipe (1) by using sand paper;
thirdly, a groove (21) with a special-shaped trend is formed in the upper surface of the shell (2), and the section of the groove (21) is rectangular;
step four, coating the outer edges of the upper surface and the lower surface of the shell (2) by using an adhesive tape for protection;
cutting the soldering lug into a shape corresponding to the direction of the groove (21), flattening the soldering lug, and placing the flattened soldering lug at the bottom of the groove (21);
sixthly, horizontally placing the shell (2) on the upper surface of the lower pressing plate (3); placing the heat pipe (1) in the groove (21) along the trend of the groove (21); an upper pressure plate (4) is covered on the upper surface of the shell (2);
seventhly, clamping an upper clamping tool (5) at the outer edges of the upper pressing plate (4) and the lower pressing plate (3) to form an integral tool;
and step eight, placing the whole tool in welding equipment for welding to complete the welding of the heat pipe (1) and the shell (2).
2. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 1, wherein the welding method comprises the following steps: in the first step, the cylindrical heat pipe is pressed into a flat heat pipe by using a hot press, and the thickness of the flat heat pipe after pressing is 3 mm.
3. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 2, wherein the welding method comprises the following steps: in the first step, the flatness of the pressed flat heat pipe is not more than 0.1 mm.
4. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 3, wherein the welding method comprises the following steps: in the third step, the casing (2) is of an aluminum silver plated plate structure.
5. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 4, wherein the welding method comprises the following steps: the width of the groove (21) is 1-2mm larger than that of the heat pipe (1).
6. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 1, wherein the welding method comprises the following steps: in the fifth step, the soldering lug is made of Sn62Pb36Ag2 material.
7. The welding method of the copper-water heat pipe applied to the aluminum plate as claimed in claim 6, wherein the welding method comprises the following steps: after cutting, the thickness of the soldering lug is smaller than the depth of the groove (21), and the thickness of the soldering lug is 0.5-1mm smaller than that of the heat pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222933.1A CN113909725A (en) | 2021-10-20 | 2021-10-20 | Welding method for applying copper water heat pipe to aluminum plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222933.1A CN113909725A (en) | 2021-10-20 | 2021-10-20 | Welding method for applying copper water heat pipe to aluminum plate |
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| Publication Number | Publication Date |
|---|---|
| CN113909725A true CN113909725A (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111222933.1A Pending CN113909725A (en) | 2021-10-20 | 2021-10-20 | Welding method for applying copper water heat pipe to aluminum plate |
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| CN (1) | CN113909725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871538A (en) * | 2022-06-20 | 2022-08-09 | 上海亘满科技有限公司 | Magnesium ammonia heat pipe welding method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060059684A1 (en) * | 2004-09-21 | 2006-03-23 | Foxconn Technology Co., Ltd. | Method of manufacturing a heat dissipating device |
| US20080142193A1 (en) * | 2006-12-13 | 2008-06-19 | Foxconn Technology Co., Ltd. | Method of manufacturing a heat dissipation device and a heat dissipation device obtained thereby |
| US20080289799A1 (en) * | 2007-05-23 | 2008-11-27 | Foxconn Technology Co., Ltd. | Heat dissipation device with a heat pipe |
| CN203353028U (en) * | 2013-07-11 | 2013-12-18 | 天津金宇鹏电力电子器件有限公司 | Novel heat pipe heat dissipation device |
| CN106455430A (en) * | 2016-09-30 | 2017-02-22 | 广东顺德三扬科技股份有限公司 | Heat dissipation apparatus and manufacturing method therefor |
| CN109604758A (en) * | 2019-01-14 | 2019-04-12 | 中国电子科技集团公司第三十八研究所 | A kind of soldering processes of Copper-Aluminum compound liquid cooled module |
| CN210745822U (en) * | 2019-07-18 | 2020-06-12 | 北京地平线机器人技术研发有限公司 | Heat dissipation device and electronic equipment with same |
-
2021
- 2021-10-20 CN CN202111222933.1A patent/CN113909725A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060059684A1 (en) * | 2004-09-21 | 2006-03-23 | Foxconn Technology Co., Ltd. | Method of manufacturing a heat dissipating device |
| US20080142193A1 (en) * | 2006-12-13 | 2008-06-19 | Foxconn Technology Co., Ltd. | Method of manufacturing a heat dissipation device and a heat dissipation device obtained thereby |
| US20080289799A1 (en) * | 2007-05-23 | 2008-11-27 | Foxconn Technology Co., Ltd. | Heat dissipation device with a heat pipe |
| CN203353028U (en) * | 2013-07-11 | 2013-12-18 | 天津金宇鹏电力电子器件有限公司 | Novel heat pipe heat dissipation device |
| CN106455430A (en) * | 2016-09-30 | 2017-02-22 | 广东顺德三扬科技股份有限公司 | Heat dissipation apparatus and manufacturing method therefor |
| CN109604758A (en) * | 2019-01-14 | 2019-04-12 | 中国电子科技集团公司第三十八研究所 | A kind of soldering processes of Copper-Aluminum compound liquid cooled module |
| CN210745822U (en) * | 2019-07-18 | 2020-06-12 | 北京地平线机器人技术研发有限公司 | Heat dissipation device and electronic equipment with same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871538A (en) * | 2022-06-20 | 2022-08-09 | 上海亘满科技有限公司 | Magnesium ammonia heat pipe welding method |
| CN114871538B (en) * | 2022-06-20 | 2024-01-30 | 上海亘满科技有限公司 | Method for welding magnesium ammonia heat pipe |
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