CN102350623A - Manufacturing method for aluminum alloy heat exchanger - Google Patents
Manufacturing method for aluminum alloy heat exchanger Download PDFInfo
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- CN102350623A CN102350623A CN201110256578XA CN201110256578A CN102350623A CN 102350623 A CN102350623 A CN 102350623A CN 201110256578X A CN201110256578X A CN 201110256578XA CN 201110256578 A CN201110256578 A CN 201110256578A CN 102350623 A CN102350623 A CN 102350623A
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- exchange tube
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Abstract
The invention provides a manufacturing method for an aluminum alloy heat exchanger, which comprises the steps of: extruding to obtain a heat exchange pipe, and respectively jetting a zinc material and a cored wire aluminum alloy braze welding material internally provided with soldering flux on the surface of the heat exchange pipe to obtain a galvanized braze welding heat exchange pipe; combining the galvanized braze welding heat exchange pipe with a fin and a flow collecting pipe, heating, and welding the elements to form the aluminum alloy heat exchanger. The manufacturing method for the aluminum alloy heat exchanger is used for jetting zinc and plating brazing flux and scaling powder on the surface of the aluminum alloy in the process of extruding the heat exchange pipe, so that the production technique of the heat exchanger is simplified and the production efficiency is increased; and a crude aluminum foil can be directly used for replacing a composite aluminum foil, so that the production cost is saved.
Description
Technical field
The present invention relates to hot swapping, be specifically related to a kind of manufacturing approach of Al-alloy heat exchanger.
Background technology
Heat exchanger with heat exchange core can be used in the condenser or evaporimeter that automobile radiators, cooler use, in this heat exchange core aluminum flat heat exchange tubes and corrugated fin be arranged alternately and each other soldering be integral.
The typical process process of making heat exchanger at present is: at first; Make aluminum alloy flat tube and clad aluminum foil fin respectively; In use aluminum alloy flat tube and clad aluminum foil fin surface coating scaling flux, clad aluminum foil fin apply soldering flux and form outside plain aluminium foil fin, again aluminum alloy flat tube and clad aluminum foil and header are combined the formation heat exchanger after; Under inert gas shielding, be heated to 550 ℃～630 ℃, be incubated 5 minutes～10 minutes after seam.The wherein main anticorrosion technique that adopts is the preferential anticorrosion corrosion that prevents heat-exchange tube through angle welding, or prevents corrosion in the mode of a zinc diffusion layer of the surface of heat-exchange tube formation.
The complicate fabrication process of above-mentioned heat exchanger, operation is many, needs many complete equipments, and production efficiency is lower, and production cost is high.
Summary of the invention
The problem that the present invention solves is to provide a kind of manufacturing approach of Al-alloy heat exchanger, and production technology is simple, and production efficiency is high.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of manufacturing approach of Al-alloy heat exchanger may further comprise the steps:
Extruding obtains heat-exchange tube, simultaneously the zinc material is ejected into said heat-exchange tube surface respectively with the medicine core aluminium soldering material that includes scaling powder and obtains zinc-plated soldering heat-exchange tube; With said zinc-plated soldering heat-exchange tube and plain aluminium foil fin and header combination back heating, seam becomes said Al-alloy heat exchanger then.
As preferably, the material of said heat-exchange tube is the aluminum or aluminum alloy material.
As preferably, said aluminum alloy materials is 1000 to be or 3000 line aluminium alloy materials.
As preferably, said zinc material is a mass content more than or equal to 99.99% zinc silk.
As preferably, the said medicine core aluminium soldering material that includes scaling powder is 4043 medicine core aluminum cored solder wires or 4045 medicine core aluminum cored solder wires.
As preferably, said aluminum alloy materials is 1000 to be or 3000 line aluminium alloy materials.
As preferably, said temperature with said zinc-plated soldering heat-exchange tube and fin and header combination back heating is 550 ℃～630 ℃, and be 5 minutes～10 minutes heat time heating time.
As preferably, said manufacturing approach is at N under the normal pressure
2Carry out under the protection.
The manufacturing approach of Al-alloy heat exchanger provided by the invention is in the process of extruding heat-exchange tube, to realize aluminum alloy surface spray zinc and spraying plating soldering flux and scaling powder simultaneously, has simplified the heat exchanger production technology, has improved production efficiency; Can directly use plain aluminium foil to replace clad aluminum foil, practice thrift production cost.
Description of drawings
Fig. 1 is the manufacturing process flow sketch map of zinc-plated soldering heat-exchange tube provided by the invention;
The sketch map of the Al-alloy heat exchanger that Fig. 2 produces for manufacturing approach that the specific embodiment of the invention provided.
The specific embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, describe just to further specifying feature and advantage of the present invention but should be appreciated that these, rather than to the restriction of claim of the present invention.
Please refer to Fig. 1, Fig. 1 is the manufacturing process flow sketch map of zinc-plated soldering heat-exchange tube provided by the invention, and the manufacturing approach of Al-alloy heat exchanger provided by the invention may further comprise the steps:
At first use extruder 1 extruding to obtain heat-exchange tube 2, the material of heat-exchange tube 2 is the aluminum or aluminum alloy material, and aluminum alloy materials is preferably 1000 and is or 3000 line aluminium alloy materials;
The thermojet rifle 3 that uses spray zinc equipment in the time of extruding is to heat-exchange tube 2 surface spray zinc; Thermojet rifle 4 through spray medicine core braze equipment obtains zinc-plated soldering heat-exchange tube to the medicine core aluminium soldering material that heat-exchange tube 2 surface sprays include scaling powder; Wherein the zinc material is preferably mass content more than or equal to 99.99% zinc silk; The medicine core aluminium soldering material that includes scaling powder is preferably 4043 medicine core aluminum cored solder wires or 4045 medicine core aluminum cored solder wires; Utilize after with water quench take-up 5 to twine rolling zinc-plated soldering heat-exchange tube then, can produce long and continuous zinc-plated soldering heat-exchange tube through above step;
The zinc-plated soldering heat-exchange tube that will prepare then cuts into the length of actual needs; Please refer to Fig. 2; The sketch map of the Al-alloy heat exchanger that Fig. 2 produces for manufacturing approach that the specific embodiment of the invention provided; Zinc-plated soldering heat-exchange tube 7 after the cutting and fin 8 and header 6 are combined, under the normal pressure at N
2Be heated to 550 ℃～630 ℃ under the protection, be 5 minutes～10 minutes heat time heating time, and seam becomes Al-alloy heat exchanger then.Wherein fin is plain aluminium foil, and the material of said plain aluminium foil is the aluminum or aluminum alloy material, without any surface treatment.
The present invention is sprayed soldering flux and scaling powder simultaneously in the process of extruding heat exchange flat tube, this compares cost with independent manufacturing flat tube increase few; Can directly use plain aluminium foil fin when the zinc-plated soldering heat-exchange tube of preparation and fin and header combination; And technology is outside plain aluminium foil fin, to apply soldering flux to form the clad aluminum foil fin at present; Then with aluminum alloy flat tube and clad aluminum foil fin surface coating scaling flux, again aluminum alloy flat tube and clad aluminum foil and header are combined the formation heat exchanger, use plain aluminium foil mutually far short of what is expected with the clad aluminum foil cost; Plain aluminium foil price is far below clad aluminum foil; The clad aluminum foil processing difficulties, specification requirement is high, needs many complete equipments to make; Spray soldering flux simultaneously with the scaling powder overall process is controlled automatically in the process of extruding heat exchange flat tube, reduced the manpower consumption of coating soldering flux and scaling powder.
The zinc silk of use 99.99% is as the spray Zinc material, and 4045 medicine core aluminum cored solder wires are as brazing material, to be used to form spray zinc layer and the brazing layer that contains scaling powder.
Choosing 3003 aluminium alloys is the heat-exchange tube base material; Use the Conform extruder to extrude high 1.8mm, wide 20mm and wall thickness platypelloid type antipriming pipe as 0.4mm; It is the heat exchange pipe; Then, after extruding, with the thermojet rifle of spray zinc equipment and the thermojet rifle of spray medicine core braze equipment zinc and the braze that contains scaling powder are ejected on the antipriming pipe respectively immediately, on whole antipriming pipe, to form zinc coat and the brazing material layer that contains scaling powder; Utilize after with water quench take-up to twine rolling this antipriming pipe then, produce long and continuous zinc-plated soldering heat-exchange tube.
To grow then and continuous zinc-plated soldering heat-exchange tube cuts into the section that length is 200mm, combine with fin and header, under the normal pressure at N
2Protect following 590 ℃ of heating 5 minutes, process heat exchanger as shown in Figure 2.
Embodiment 2:
The zinc silk of use 99.99% is as the spray Zinc material, and 4043 medicine core aluminum cored solder wires are as brazing material.
Choosing 3003 aluminium alloys is the heat-exchange tube base material; Use the Conform extruder to extrude high 1.8mm, wide 20mm and wall thickness platypelloid type antipriming pipe as 0.4mm; Be the heat exchange pipe, then, spray zinc immediately respectively and spray the soldering of medicine core and expect on the antipriming pipe; Utilize after with water quench take-up to twine rolling this antipriming pipe then, make zinc-plated soldering heat-exchange tube.
Then this zinc-plated soldering heat-exchange tube is cut into the section that length is 200mm, combines with fin and header, under the normal pressure at N
2Protect following 570 ℃ of heating 6 minutes, process heat exchanger as shown in Figure 2.
Embodiment 3:
The zinc silk of use 99.99% is as the spray Zinc material, and 4043 medicine core aluminum cored solder wires are as brazing material.
Choosing 1060 aluminium alloys is the heat-exchange tube base material; Use the Conform extruder to extrude high 1.8mm, wide 20mm and wall thickness platypelloid type antipriming pipe as 0.4mm; Be the heat exchange pipe, then, spray zinc immediately respectively and spray the soldering of medicine core and expect on the antipriming pipe; Utilize after with water quench take-up to twine rolling this antipriming pipe then, make zinc-plated soldering heat-exchange tube.
Then this zinc-plated soldering heat-exchange tube is cut into the section that length is 200mm, combines with fin and header, under the normal pressure at N
2Protect following 590 ℃ of heating 10 minutes, process heat exchanger as shown in Figure 2.
Embodiment 4:
The zinc silk of use 99.99% is as the spray Zinc material, and 4045 medicine core aluminum cored solder wires are as brazing material.
Choosing 3004 aluminium alloys is the heat-exchange tube base material; Use the Conform extruder to extrude high 1.8mm, wide 20mm and wall thickness platypelloid type antipriming pipe as 0.4mm; Be the heat exchange pipe, then, spray zinc immediately respectively and spray the soldering of medicine core and expect on the antipriming pipe; Utilize after with water quench take-up to twine rolling this antipriming pipe then, make zinc-plated soldering heat-exchange tube.
Then this zinc-plated soldering heat-exchange tube is cut into the section that length is 200mm, combines with fin and header, under the normal pressure at N
2Protect following 620 ℃ of heating 7 minutes, process heat exchanger as shown in Figure 2.
Embodiment 5:
The zinc silk of use 99.99% is as the spray Zinc material, and 4043 medicine core aluminum cored solder wires are as brazing material.
Choosing 1070 aluminium alloys is the heat-exchange tube base material; Use the Conform extruder to extrude high 1.8mm, wide 20mm and wall thickness platypelloid type antipriming pipe as 0.4mm; Be the heat exchange pipe, then, spray zinc immediately respectively and spray the soldering of medicine core and expect on the antipriming pipe; Utilize after with water quench take-up to twine rolling this antipriming pipe then, make zinc-plated soldering heat-exchange tube.
Then this zinc-plated soldering heat-exchange tube is cut into the section that length is 200mm, combines with fin and header, under the normal pressure at N
2Protect following 500 ℃ of heating 8 minutes, process heat exchanger as shown in Figure 2.
The heat exchanger of above embodiment 1 to 5 preparation is carried out the soldering test respectively, and test is carried out the sample corrosion resistance test by " modification salt fog test method " ASTM/G85-1998A3 (seawater acidifying circulation experiment) according to the SWAAT decay resistance.After corrosion test, measure the corrosion depth of 10 sections heat-exchange tubes, get the corrosion depth of maximum corrosion depth for each test.
Test result such as following table:
The soldering test result of the heat exchanger that table 1 embodiment 1-5 is provided
Test result by table 1 can find out that the corrosion resistance of the heat exchanger that manufacturing approach provided by the invention is produced and fin conservation rate are all very good
More than the manufacturing approach of a kind of Al-alloy heat exchanger provided by the present invention has been carried out detailed introduction.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. the manufacturing approach of an Al-alloy heat exchanger is characterized in that, may further comprise the steps:
Extruding preparation heat-exchange tube is ejected into said heat-exchange tube surface with the zinc material respectively with the medicine core aluminium soldering material that includes scaling powder simultaneously and obtains zinc-plated soldering heat-exchange tube; With said zinc-plated soldering heat-exchange tube and plain aluminium foil fin and header combination back heating, seam becomes said Al-alloy heat exchanger then.
2. manufacturing approach according to claim 1 is characterized in that, the material of said heat-exchange tube is the aluminum or aluminum alloy material.
3. manufacturing approach according to claim 2 is characterized in that, said aluminum alloy materials is 1000 to be or 3000 line aluminium alloy materials.
4. manufacturing approach according to claim 1 is characterized in that, said zinc material is a mass content more than or equal to 99.99% zinc silk.
5. manufacturing approach according to claim 1 is characterized in that, the said medicine core aluminium soldering material that includes scaling powder is 4043 medicine core aluminum cored solder wires or 4045 medicine core aluminum cored solder wires.
6. manufacturing approach according to claim 5 is characterized in that, said aluminum alloy materials is 1000 to be or 3000 line aluminium alloy materials.
7. manufacturing approach according to claim 1 is characterized in that, said temperature with said zinc-plated soldering heat-exchange tube and fin and header combination back heating is 550 ℃～630 ℃, and be 5 minutes～10 minutes heat time heating time.
8. manufacturing approach according to claim 1 is characterized in that, under the normal pressure at N
2Carry out under the protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110256578XA CN102350623A (en) | 2011-08-31 | 2011-08-31 | Manufacturing method for aluminum alloy heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110256578XA CN102350623A (en) | 2011-08-31 | 2011-08-31 | Manufacturing method for aluminum alloy heat exchanger |
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| CN102350623A true CN102350623A (en) | 2012-02-15 |
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| CN201110256578XA Pending CN102350623A (en) | 2011-08-31 | 2011-08-31 | Manufacturing method for aluminum alloy heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110625A (en) * | 2014-11-11 | 2017-08-29 | 株式会社电装 | The manufacture method of heat-exchange device and heat-exchange device |
| CN113732422A (en) * | 2021-09-23 | 2021-12-03 | 郑州机械研究所有限公司 | Brazing flux-free brazing method and brazing filler metal paste for aluminum alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910467A (en) * | 1982-07-12 | 1984-01-19 | Nippon Light Metal Co Ltd | Production of blank material for brazing |
| US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
| CN1091685A (en) * | 1992-12-29 | 1994-09-07 | 昭和铝株式会社 | Corrosion-proof aluminium for soldering and manufacture method thereof |
| CN101368800A (en) * | 2008-09-24 | 2009-02-18 | 东华大学 | Axial fin flat pipe heat exchanger and manufacturing method thereof |
| CN101489709A (en) * | 2006-10-24 | 2009-07-22 | Gea能量技术有限公司 | Production of a heat exchanger |
-
2011
- 2011-08-31 CN CN201110256578XA patent/CN102350623A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910467A (en) * | 1982-07-12 | 1984-01-19 | Nippon Light Metal Co Ltd | Production of blank material for brazing |
| US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
| CN1091685A (en) * | 1992-12-29 | 1994-09-07 | 昭和铝株式会社 | Corrosion-proof aluminium for soldering and manufacture method thereof |
| CN101489709A (en) * | 2006-10-24 | 2009-07-22 | Gea能量技术有限公司 | Production of a heat exchanger |
| CN101368800A (en) * | 2008-09-24 | 2009-02-18 | 东华大学 | Axial fin flat pipe heat exchanger and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110625A (en) * | 2014-11-11 | 2017-08-29 | 株式会社电装 | The manufacture method of heat-exchange device and heat-exchange device |
| CN113732422A (en) * | 2021-09-23 | 2021-12-03 | 郑州机械研究所有限公司 | Brazing flux-free brazing method and brazing filler metal paste for aluminum alloy |
| CN113732422B (en) * | 2021-09-23 | 2022-12-13 | 郑州机械研究所有限公司 | Brazing flux-free brazing method and brazing filler metal paste for aluminum alloy |
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Application publication date: 20120215 |