CN102151929B - Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator - Google Patents
Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator Download PDFInfo
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- CN102151929B CN102151929B CN 201110125716 CN201110125716A CN102151929B CN 102151929 B CN102151929 B CN 102151929B CN 201110125716 CN201110125716 CN 201110125716 CN 201110125716 A CN201110125716 A CN 201110125716A CN 102151929 B CN102151929 B CN 102151929B
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Abstract
The invention relates to a vacuum brazing process of a copper-aluminum (Cu-Al) pipe panel radiator. The vacuum brazing process is characterized by comprising the following steps: (1) milling a liquid infusion pipe groove on an aluminum plate, wherein, the shape of the liquid infusion pipe groove is matched with that of a copper pipe; (2) placing a brazing foil in the liquid infusion pipe groove, and then placing the copper pipe in the liquid infusion pipe groove; and (3) fixing and tightly pressing the aluminum plate by tooling, and then placing the aluminum plate in a vacuum furnace for welding under the conditions as follows: a. heating to 260-280 DEG C, and performing heat preservation for 1-1.5 hours under the vacuum degree of not less than 9.0*10<-3>Pa; b. heating to 365-375 DEG C, and performing heat preservation for 1-1.5 hours under the vacuum degree of not less than 5.6*10<-3>Pa; c. heating to 395-410 DEG C, performing heat preservation for 10-15 minutes, and powering off for cooling under the vacuum degree of not less than 5.6*10<-3>Pa; and d. cooling to 290-300 DEG C within 30-45 minutes after powering off, and finally taking out the aluminum plate from the furnace. In the process, the copper pipe is in a snake shape, and the liquid infusion pipe groove is also in a snake shape matched with the copper pipe. By utilizing the vacuum brazing process, problems such as poor working environments as well as post-welding deformation and troublesome treatment of the product are solved, and meanwhile the purposes of quantity production and product quality improvement are realized.
Description
Technical field
The present invention relates to a kind of vacuum brazing technique, especially a kind of vacuum brazing technique of copper aluminium tube plate type radiator belongs to copper aluminum pipe plate radiator and makes the field.
Background technology
For copper aluminum pipe plate radiator, realize that it is key problem in technology that dissimilar metal connects.Existing method of attachment is argon arc welding and gas brazing.Argon arc welding connects not only that labour intensity is big, poor working environment, and product postwelding easy deformation; Gas brazing connects not only inefficiency, and postwelding needs to clear up the residual brazing flux of product surface, avoids residual brazing flux that product is caused corrosion, more than two kinds of processes all be difficult for realizing producing in batches and forming the weld seams of densification.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; A kind of vacuum brazing technique of copper aluminium tube plate type radiator is provided; Both solved the problem of poor working environment; Solve the product post welding distortion again and handled the problem that bothers, realized batch process, the purpose of improving the quality of products simultaneously.
According to technical scheme provided by the invention, the vacuum brazing technique of said copper aluminium tube plate type radiator, characteristic is to comprise following processing step:
(1) on aluminium sheet, mill out the fluid-through tube groove, the shape and the copper pipe of said fluid-through tube groove are complementary;
(2) in the fluid-through tube groove, place the solder paper tinsel, again copper pipe is positioned in the fluid-through tube groove;
(3) adopt frock to be fixed and clamped aluminium sheet, be placed in the vacuum drying oven and weld; The condition of said welding is:
A, be heated to 260 ~ 280 ℃ the insulation 1 ~ 1.5 hour, vacuum>=9.0 * 10
-3Pa;
B, be heated to 365 ~ 375 ℃ the insulation 1 ~ 1.5 hour, vacuum>=5.6 * 10
-3Pa;
C, be heated to 395 ~ 410 ℃ of insulations after 10 ~ 15 minutes, begin outage cooling, vacuum>=5.6 * 10
-3Pa;
D, outage are cooled to 290 ~ 300 ℃, and temperature fall time is 30 ~ 45min, comes out of the stove.
Said copper pipe is snakelike, said fluid-through tube groove for copper pipe be complementary snakelike.
Said solder paper tinsel is that the trade mark is the solder paper tinsel of Zn89AlCu.
Said frock comprises jig plate and lower press plate, and last jig plate and lower press plate are through bolt, and bolt is provided with spring, and spring is fixed on the bolt by nut.
The present invention had both solved the problem of poor working environment, had solved the product post welding distortion again and had handled the problem that bothers, and had realized batch process, the purpose of improving the quality of products simultaneously; Production efficiency is high, labour intensity is low, reduce environmental pollution, and has reduced weld defect, has guaranteed product quality.
Description of drawings
Fig. 1 is the sketch map of aluminium sheet of the present invention.
Fig. 2 is the sketch map of frock of the present invention.
The specific embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in Figure 2: frock used in the present invention comprises jig plate 1 and lower press plate 2, and last jig plate 1 is fixing through bolt 3 with lower press plate 2, and bolt 3 is provided with spring 4, and spring 4 is fixed on the bolt 3 by nut 5.
Embodiment one: a kind of vacuum brazing technique of copper aluminium tube plate type radiator comprises following processing step:
(1) on aluminium sheet 6, mill out snakelike fluid-through tube groove, the shape of said fluid-through tube groove and copper pipe 7 are complementary;
(2) in the fluid-through tube groove, placing the trade mark is the solder paper tinsel 8 of Zn89AlCu, copper pipe 7 is positioned in the fluid-through tube groove again, as shown in Figure 1;
(3) adopt frock to be fixed and clamped aluminium sheet 6, be placed in the vacuum drying oven and weld; The condition of said welding is:
A, be heated to 260 ℃ the insulation 1.5 hours, vacuum>=9.0 * 10
-3Pa;
B, be heated to 365 ℃ the insulation 1.5 hours, vacuum>=5.6 * 10
-3Pa;
C, be heated to 395 ℃ of insulations after 15 minutes, begin outage cooling, vacuum>=5.6 * 10
-3Pa;
D, outage are cooled to 290 ℃, and temperature fall time is 45min, comes out of the stove.
Embodiment two: a kind of vacuum brazing technique of copper aluminium tube plate type radiator comprises following processing step:
(1) on aluminium sheet 6, mill out snakelike fluid-through tube groove, the shape of said fluid-through tube groove and copper pipe 7 are complementary;
(2) in the fluid-through tube groove, placing the trade mark is the solder paper tinsel 8 of Zn89AlCu, copper pipe 7 is positioned in the fluid-through tube groove again, as shown in Figure 1;
(3) adopt frock to be fixed and clamped aluminium sheet 6, be placed in the vacuum drying oven and weld; The condition of said welding is:
A, be heated to 280 ℃ the insulation 1 hour, vacuum>=9.0 * 10
-3Pa;
B, be heated to 375 ℃ the insulation 1 hour, vacuum>=5.6 * 10
-3Pa;
C, be heated to 410 ℃ of insulations after 10 minutes, begin outage cooling, vacuum>=5.6 * 10
-3Pa;
D, outage are cooled to 300 ℃, and temperature fall time is 30min, comes out of the stove.
Embodiment three: a kind of vacuum brazing technique of copper aluminium tube plate type radiator comprises following processing step:
(1) on aluminium sheet 6, mill out snakelike fluid-through tube groove, the shape of said fluid-through tube groove and copper pipe 7 are complementary;
(2) in the fluid-through tube groove, placing the trade mark is the solder paper tinsel 8 of Zn89AlCu, copper pipe 7 is positioned in the fluid-through tube groove again, as shown in Figure 1;
(3) adopt frock to be fixed and clamped aluminium sheet 6, be placed in the vacuum drying oven and weld; The condition of said welding is:
A, be heated to 270 ℃ the insulation 1.2 hours, vacuum>=9.0 * 10
-3Pa;
B, be heated to 370 ℃ the insulation 1.2 hours, vacuum>=5.6 * 10
-3Pa;
C, be heated to 400 ℃ of insulations after 12 minutes, begin outage cooling, vacuum>=5.6 * 10
-3Pa;
D, outage are cooled to 295 ℃, and temperature fall time is 35min, comes out of the stove.
Claims (1)
1. the vacuum brazing technique of a copper aluminium tube plate type radiator is characterized in that, comprises following processing step:
(1) on aluminium sheet, mill out the fluid-through tube groove, the shape and the copper pipe of said fluid-through tube groove are complementary;
(2) in the fluid-through tube groove, place the solder paper tinsel, again copper pipe is positioned in the fluid-through tube groove;
(3) adopt frock to be fixed and clamped aluminium sheet, be placed in the vacuum drying oven and weld; The condition of said welding is:
A, be heated to 260 ~ 280 ℃ the insulation 1 ~ 1.5 hour, vacuum>=9.0 * 10
-3Pa;
B, be heated to 365 ~ 375 ℃ the insulation 1 ~ 1.5 hour, vacuum>=5.6 * 10
-3Pa;
C, be heated to 395 ~ 410 ℃ of insulations after 10 ~ 15 minutes, begin outage cooling, vacuum>=5.6 * 10
-3Pa;
D, outage are cooled to 290 ~ 300 ℃, and temperature fall time is 30 ~ 45min, comes out of the stove;
Said copper pipe is snakelike, said fluid-through tube groove for copper pipe be complementary snakelike;
Said solder paper tinsel is that the trade mark is the solder paper tinsel of Zn89AlCu;
Said frock comprises jig plate (1) and lower press plate (2), and last jig plate (1) and lower press plate (2) are fixing through bolt (3), and bolt (3) is provided with spring (4), and spring (4) is fixed on the bolt (3) by nut (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110125716 CN102151929B (en) | 2011-05-16 | 2011-05-16 | Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110125716 CN102151929B (en) | 2011-05-16 | 2011-05-16 | Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102151929A CN102151929A (en) | 2011-08-17 |
| CN102151929B true CN102151929B (en) | 2012-12-12 |
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| CN 201110125716 Active CN102151929B (en) | 2011-05-16 | 2011-05-16 | Vacuum brazing process of copper-aluminum (Cu-Al) pipe panel radiator |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102699625B (en) * | 2011-10-14 | 2014-11-19 | 扬州恒星精密机械有限公司 | Process for machining water-cooling plate of high-power waveguide component |
| CN103157864B (en) * | 2011-12-12 | 2016-08-24 | 贵州永红航空机械有限责任公司 | Aluminium alloy water, gas separating device vacuum brazing technique |
| CN102513796B (en) * | 2011-12-30 | 2014-08-06 | 无锡信大气象传感网科技有限公司 | Machining process for inner conductor of ferrite stub |
| CN102721214B (en) * | 2012-07-03 | 2013-04-03 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
| CN102861958B (en) * | 2012-09-28 | 2014-10-22 | 无锡江南计算技术研究所 | Vacuum brazing method |
| US8960525B2 (en) * | 2013-01-31 | 2015-02-24 | General Electric Company | Brazing process and plate assembly |
| CN103624356A (en) * | 2013-11-14 | 2014-03-12 | 北京航空航天大学 | Method for large-area low-defect rate soldering of dissimilar metallic combination drive pipe structure |
| CN104588808B (en) * | 2014-11-26 | 2016-04-06 | 中国原子能科学研究院 | A kind of sheet of metallic material embed pipe with trough method for welding |
| CN105033581A (en) * | 2015-07-10 | 2015-11-11 | 西北矿冶研究院 | Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head |
| CN105081590B (en) * | 2015-07-31 | 2017-06-09 | 湘潭电机股份有限公司 | The cold drawing and manufacture method of a kind of braze-welded structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE8912272U1 (en) * | 1989-10-16 | 1991-02-14 | Helmut Lingemann Gmbh & Co, 5600 Wuppertal, De | |
| CN2472146Y (en) * | 2001-01-10 | 2002-01-16 | 甘肃省科学院自然能源研究所 | Ultrasonic copper aluminum welded solar heat collecting core strips |
| CN100349683C (en) * | 2005-09-06 | 2007-11-21 | 山东大学 | Diffusion soldering method capable of making copper-aluminium joint binding strength high |
| JP2007167877A (en) * | 2005-12-20 | 2007-07-05 | Calsonic Kansei Corp | Method for manufacturing heat exchanger tube |
| CN101537555B (en) * | 2009-04-15 | 2011-09-14 | 南京工业大学 | Glass and metal welding clamp |
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