CN104400169A - Vacuum brazing method for aluminum alloy solderless piece - Google Patents
Vacuum brazing method for aluminum alloy solderless piece Download PDFInfo
- Publication number
- CN104400169A CN104400169A CN201410509716.4A CN201410509716A CN104400169A CN 104400169 A CN104400169 A CN 104400169A CN 201410509716 A CN201410509716 A CN 201410509716A CN 104400169 A CN104400169 A CN 104400169A
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- CN
- China
- Prior art keywords
- weldment
- vacuum
- vacuum brazing
- treat
- brazing method
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Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention provides a vacuum brazing method for an aluminum alloy solderless piece. The method comprises the following steps that (1) a high-purity pure aluminum target material and a pure silicon target material are selected; (2) acetone and ethyl alcohol are sequentially adopted to wipe the target materials and a to-be-soldered part so as to remove oil contamination; (3) a magnetron sputtering method is utilized for depositing a pure aluminum thin film and a pure silicon thin film on the surface of the to-be-soldered part; (4) the to-be-soldered part with the thin films deposited on the surface is taken out of a vacuum chamber; (5) the to-be-soldered part is assembled; (6) the assembled the to-be-soldered part is conveyed to a vacuum brazing furnace to be heated and soldered; and (7) the to-be-soldered part is cooled to the room temperature and is taken out. The vacuum brazing method has the advantages that a solder piece is not adopted; the requirement that according to an existing vacuum brazing technology, a soldering face of a to-be-soldered workpiece must be a plane is avoided; vacuum brazing of structures of a slope, a curved surface and the like is smoothly achieved; and processes of solder piece design, solder piece cutting, solder piece cleaning and the like are avoided.
Description
Technical field
The present invention relates to a kind of method for welding, particularly a kind of Aluminum Alloy Vacuum Brazing method.
Background technology
Vacuum Soldering Technology has a wide range of applications in fields such as aerospace industry, nuclear power industry, electronics industry and auto industrys, the method have workpiece heat evenly, brazed seam Forming Quality is good, be out of shape the advantages such as little.But, existing Aluminum Alloy Vacuum Brazing technical method has the following disadvantages: production procedure is complicated, the production cycle long, soldering time solder to overflow the problem such as serious, in addition, also need before welding to carry out the work such as weld tabs design, weld tabs cutting and weld tabs pretreatment, substantially increase the difficulty that quality of vacuum brazing controls.
Summary of the invention
Technical problem to be solved of the present invention is to provide a kind of aluminium alloy without weld tabs vacuum brazing method, can realize workpiece fast, efficient welding, avoid the necessary links in a series of existing vacuum brazing technique processes such as weld tabs design, cutting, pretreatment.
The present invention solves the problems of the technologies described above by the following technical solutions: a kind of aluminium alloy is without weld tabs vacuum brazing method, and it comprises the following steps:
1) highly purified fine aluminium target and pure silicon target is selected;
2) adopt acetone and alcohol wipe target successively and treat weldment, to remove degreasing;
3) utilize magnetically controlled sputter method, treat weldment surface deposition fine aluminium film and pure silicon film;
4) that from vacuum chamber, takes out that surface deposition has a film treats weldment;
5) weldment is treated in assembling;
6) treat that weldment is sent what assemble in vacuum brazing furnace, carry out heating, welding;
7) treat that weldment is cooled to room temperature, take out.
Optimize, described step 1) in, the purity of fine aluminium target and pure silicon target is at least 99.99%.
Optimize, described step 2) in, it is pure that acetone and alcohol are analysis, and the wiping time is at least 3min.
Optimize, described step 3) in, the vacuum 7 × 10 of magnetron sputtering vacuum chamber
-4pa, operating pressure is 1.1Pa.
Optimize, described step 3) in, target and treat that the distance of weldment is 55mm.
Optimize, described step 3) in, the time of fine aluminium target and pure silicon target alternating deposit is 20min, and total sedimentation time is 2h.
Optimize, described step 5) in, will treat that weldment overlap is placed, the surface depositing film is adjacent, and placement weight is the briquetting of 1.5Kg thereon.
Optimize, described step 6) in, treat that weldment and briquetting are in 20min, homogeneous heating to 360 DEG C, insulation 90min, vacuum is better than 1 × 10-4Pa.
Optimize, described step 6) in, treat that weldment and briquetting are in 40min, homogeneous heating to 480 DEG C, insulation 50min, vacuum is better than 1 × 10-4Pa.
Optimize, described step 6) in, treat that weldment and briquetting are in 20min, homogeneous heating to 560 DEG C, insulation 6min, vacuum is better than 1 × 10-4Pa.
Optimize, described step 6) in, stop heating treating weldment and briquetting, with stove cooling, vacuum is better than 1 × 10-4Pa.
Optimize, described step 6) in, after weldment and briquetting cool 2h with stove, no longer vacuumize.
The invention has the advantages that:
1) no longer adopt weld tabs, relieve existing Vacuum Soldering Technology and treat the requirement that welder's part solder side is necessary for plane, realize inclined-plane, the isostructural vacuum brazing of curved surface smoothly.
2) flow processs such as weld tabs design, weld tabs cutting, weld tabs cleaning are avoided.
3) nano-structured coating effectively reduces the temperature of vacuum brazing.
4) solder is deposited directly to surface of the work to be welded, avoid cause because of weld tabs and workpiece gap weld porosity, the defect such as to be mingled with.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of aluminium alloy of the present invention without weld tabs vacuum brazing method.
Fig. 2 be treat in the present invention that weldment shape and surface application have a solder treat weldment;
Fig. 3 is the installation diagram treating weldment in the present invention;
Fig. 4 is Aluminum Alloy Vacuum Brazing artwork in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
The invention provides a kind of aluminium alloy without weld tabs vacuum brazing method, it comprises the following steps:
1) highly purified fine aluminium target and pure silicon target is selected;
2) adopt acetone and alcohol wipe target successively and treat weldment, to remove degreasing;
Adopt acetone wiping fine aluminium and pure silicon target, each 3min;
In employing alcohol wipe Fig. 2, (a's) treats weldment, 3min;
3) adopt the magnetically controlled sputter method in Fig. 3, treat weldment surface deposition fine aluminium film and pure silicon film;
By target and to be welded when weldment is placed in the vacuum of magnetron sputtering apparatus in, and fixing;
The vacuum of vacuum chamber is set to 6.5 × 10
-4pa, operating pressure is 1.1Pa, target and treat that the distance of weldment is 55mm;
Fine aluminium target and pure silicon target are alternately treating weldment deposited on silicon film, and interval time is 20min, and total sedimentation time is 2h, and surface deposition has the sample of solder as shown in Fig. 2 (b).
4) that from vacuum chamber, takes out that surface deposition has a film treats weldment;
5) weldment is treated in assembling;
Weldment is treated in taking-up, and presses the mode of (a) in Fig. 3, places, and is positioned over by briquetting treats above weldment by the mode of (b) in Fig. 3.
6) treat that weldment is sent what assemble in vacuum brazing furnace, carry out heating, welding;
Treat the vacuum brazing technique of weldment as shown in Figure 4.
Treat that weldment and briquetting are in 20min, homogeneous heating to 360 DEG C, insulation 90min, vacuum is better than 1 × 10
-4pa.
Treat that weldment and briquetting are in 40min, homogeneous heating to 480 DEG C, insulation 50min, vacuum is better than 1 × 10
-4pa.
Treat that weldment and briquetting are in 20min, homogeneous heating to 560 DEG C, insulation 6min, vacuum is better than 1 × 10
-4pa.
Stop heating treating weldment and briquetting, with stove cooling, vacuum is better than 1 × 10
-4pa.
After weldment and briquetting cool 2h with stove, no longer vacuumize.
7) treat that weldment is cooled to room temperature, take out and treat weldment and briquetting.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; the any amendment done within all spirit in the invention and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in the invention.
Claims (10)
1. aluminium alloy is without a weld tabs vacuum brazing method, it is characterized in that:
1) highly purified fine aluminium target and pure silicon target is selected;
2) adopt acetone and alcohol wipe target successively and treat weldment, to remove degreasing;
3) utilize magnetically controlled sputter method, treat weldment surface deposition fine aluminium film and pure silicon film;
4) that from vacuum chamber, takes out that surface deposition has a film treats weldment;
5) weldment is treated in assembling;
6) treat that weldment is sent what assemble in vacuum brazing furnace, carry out heating, welding;
7) treat that weldment is cooled to room temperature, take out and treat weldment.
2. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 1) in, the purity of target is at least 99.99%.
3. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 2) in, it is pure that acetone and alcohol are analysis, and the wiping time is at least 3min.
4. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 3) in, the vacuum 7 × 10 of magnetron sputtering vacuum chamber
-4pa, operating pressure is 1.1Pa.
5. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 3) in, target and treat that the distance of weldment is 55mm.
6. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 3) in, the time of fine aluminium target and pure silicon target alternating deposit is 20min, and total sedimentation time is 2h.
7. a kind of aluminium alloy according to claim 1 is without weld tabs vacuum brazing method, it is characterized in that: described step 5) in, will treat that weldment overlap is placed, the surface depositing film is adjacent, and places briquetting thereon.
8. a kind of aluminium alloy according to claim 7 is without weld tabs vacuum brazing method, it is characterized in that: described step 6) in, treat that weldment and briquetting are in 20min, homogeneous heating to 360 DEG C, insulation 90min, vacuum is better than 1 × 10
-4pa;
Treat that weldment and briquetting are in 40min, homogeneous heating to 480 DEG C, insulation 50min, vacuum is better than 1 × 10
-4pa;
Treat that weldment and briquetting are in 20min, homogeneous heating to 560 DEG C, insulation 6min, vacuum is better than 1 × 10
-4pa.
9. a kind of aluminium alloy according to claim 8 is without weld tabs vacuum brazing method, it is characterized in that: described step 6) in, stop heating treating weldment and briquetting, with stove cooling, vacuum is better than 1 × 10
-4pa.
10. a kind of aluminium alloy according to claim 9 is without weld tabs vacuum brazing method, it is characterized in that: after weldment and briquetting cool 2h with stove, no longer vacuumize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410509716.4A CN104400169A (en) | 2014-09-28 | 2014-09-28 | Vacuum brazing method for aluminum alloy solderless piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410509716.4A CN104400169A (en) | 2014-09-28 | 2014-09-28 | Vacuum brazing method for aluminum alloy solderless piece |
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|---|---|
| CN104400169A true CN104400169A (en) | 2015-03-11 |
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|---|---|---|---|
| CN201410509716.4A Pending CN104400169A (en) | 2014-09-28 | 2014-09-28 | Vacuum brazing method for aluminum alloy solderless piece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077863A (en) * | 2016-06-20 | 2016-11-09 | 上海航天精密机械研究所 | Heat dissipation cold plate vacuum surface activation attachment means and method |
| CN111203606A (en) * | 2020-03-18 | 2020-05-29 | 宁波江丰电子材料股份有限公司 | Metal target vacuum magnetron sputtering nickel plating and welding method |
Citations (7)
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|---|---|---|---|---|
| US5581799A (en) * | 1992-10-30 | 1996-12-03 | Showa Aluminum Corporation | Brazeable aluminum material and a method of producing same |
| CN1353633A (en) * | 1999-06-02 | 2002-06-12 | 索尔微氟及衍生物有限公司 | Components coated with aluminium-silicon alloy |
| CN1607990A (en) * | 2001-11-21 | 2005-04-20 | 达纳加拿大公司 | Fluxless brazing method and compositions of layered material systems for brazing aluminum or dissimilar metals |
| CN1882407A (en) * | 2003-11-28 | 2006-12-20 | 爱尔康何纳吕公司 | Aluminium alloy strip for welding |
| CN102209629A (en) * | 2008-11-10 | 2011-10-05 | 阿勒里斯铝业科布伦茨有限公司 | Process for fluxless brazing of aluminium and brazing sheet for use therein |
| CN102452844A (en) * | 2010-10-30 | 2012-05-16 | 比亚迪股份有限公司 | Aluminum nitride aluminum-coated base plate and preparation method thereof |
| CN103056469A (en) * | 2013-01-24 | 2013-04-24 | 范良凯 | Method for large-area brazing of stainless steel sheet and aluminum sheet |
-
2014
- 2014-09-28 CN CN201410509716.4A patent/CN104400169A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581799A (en) * | 1992-10-30 | 1996-12-03 | Showa Aluminum Corporation | Brazeable aluminum material and a method of producing same |
| CN1353633A (en) * | 1999-06-02 | 2002-06-12 | 索尔微氟及衍生物有限公司 | Components coated with aluminium-silicon alloy |
| CN1607990A (en) * | 2001-11-21 | 2005-04-20 | 达纳加拿大公司 | Fluxless brazing method and compositions of layered material systems for brazing aluminum or dissimilar metals |
| CN1882407A (en) * | 2003-11-28 | 2006-12-20 | 爱尔康何纳吕公司 | Aluminium alloy strip for welding |
| CN102209629A (en) * | 2008-11-10 | 2011-10-05 | 阿勒里斯铝业科布伦茨有限公司 | Process for fluxless brazing of aluminium and brazing sheet for use therein |
| CN102452844A (en) * | 2010-10-30 | 2012-05-16 | 比亚迪股份有限公司 | Aluminum nitride aluminum-coated base plate and preparation method thereof |
| CN103056469A (en) * | 2013-01-24 | 2013-04-24 | 范良凯 | Method for large-area brazing of stainless steel sheet and aluminum sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077863A (en) * | 2016-06-20 | 2016-11-09 | 上海航天精密机械研究所 | Heat dissipation cold plate vacuum surface activation attachment means and method |
| CN111203606A (en) * | 2020-03-18 | 2020-05-29 | 宁波江丰电子材料股份有限公司 | Metal target vacuum magnetron sputtering nickel plating and welding method |
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Application publication date: 20150311 |
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