CN102748980A - High covering rate ultra-thin brazing aluminum alloy composite board - Google Patents
High covering rate ultra-thin brazing aluminum alloy composite board Download PDFInfo
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- CN102748980A CN102748980A CN2012102602533A CN201210260253A CN102748980A CN 102748980 A CN102748980 A CN 102748980A CN 2012102602533 A CN2012102602533 A CN 2012102602533A CN 201210260253 A CN201210260253 A CN 201210260253A CN 102748980 A CN102748980 A CN 102748980A
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Abstract
The invention discloses a high covering rate ultra-thin brazing aluminum alloy composite board. A composite layer structure is respectively compounded on the upper surface and the lower surface of a basic body layer of the composite board, the basic body layer is made of 3003 aluminum alloy, the composite layer is made of 4104 aluminum alloy, the thickness of the composite board is 0.45-0.5mm, the covering rate achieves 20%, and the covering rate is a percentage of covering layer thickness occupied in the total thickness of the composite board. The composite board is mainly used for separation boards of various heat exchanger, can effectively avoid leak sources and cracking of an aluminum plate-fin heat exchanger in a vacuum brazing process and has strong tensile strength and heat conduction performance, thickness of materials of the separation boards of the original heat exchanger is reduced by more than 20%, and the covering rate breaks through the covering rate limit to more than 18%.
Description
Technical field
The present invention relates to a kind of high ultrathin brazed aluminum alloy composite plate of rate that is laminated with.
Background technology
Aluminum plate-fin heat exchanger is used widely in many industries owing to advantages such as compact conformation, wide adaptability, good economy performance.
The plate-fin heat exchanger kind is a lot, but cellular construction is basic identical: mainly contain fin, strip of paper used for sealing, flow deflector and dividing plate, form through vacuum brazing.And dividing plate is the vital part that links fin, strip of paper used for sealing, flow deflector vacuum brazing, and it will directly determine the yield rate of heat exchanger vacuum brazing, with each item technical indicator that directly influences heat exchanger.
In recent years, along with the fast development of China's vacuum brazing aluminum alloy composite board process technology, make the dividing plate of heat exchanger be tending towards thinner; The higher direction of intensity develops; Simultaneously, along with the relevant industries joint props up, falls carrying out in a deep going way of this activity, heat exchanger adopts the aluminum alloy materials that upgrades also to propose requirements at the higher level.
Technical characteristic by aluminum plate-fin heat exchanger can be known, requires dividing plate must have good welding performance, heat conductivility, antiseptic property and certain compressive resistance.
Can know by the aluminum plate-fin heat exchanger structure; Dividing plate is the vital part that links fin, flow deflector, strip of paper used for sealing, in above-mentioned several Vacuum Brazing processes, requires the layer that is laminated with of dividing plate to have lower liquidus curve; The suitable layer braze that be laminated with; Under same temperature conditions, more soldering layered material fusing cross flow can be arranged, weldering, rosin joint and cracking phenomena appear leaking in the vacuum brazing process to reduce.
Originally heat exchanger dividing plate clad common used material is 4004, and the matrix common used material is 3003, and all greater than 0.6mm, clad ratio is all less than 18% with composite plate thickness for its dividing plate.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, and a kind of high ultrathin brazed aluminum alloy composite plate of rate that is laminated with is provided, and its matrix material is 3003 aluminium alloys, and the brazing layer material is 4104 aluminium alloys.This material is mainly used in the dividing plate of all kinds of heat exchangers; Can solve leak source and cracking phenomena that aluminum plate-fin heat exchanger occurs effectively in the vacuum brazing process; Have stronger tensile strength and heat-conductive characteristic; And the material thickness of original heat exchanger dividing plate reduced more than 20%, clad ratio has been broken through the clad ratio limit more than 18%.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of high ultrathin brazed aluminum alloy composite plate of rate that is laminated with, said composite plate is for compound respectively one deck is laminated with a layer structure on the upper and lower surface of base layer, and the base layer material is 3003 aluminium alloys; Being laminated with layer material is 4104 aluminium alloys; Composite plate thickness is 0.45～0.5mm, and clad ratio reaches 20%, and clad ratio accounts for the percentage of composite plate gross thickness for the single face coating thickness.
The said stratification composition that is laminated with is: Si 9.0%～10.5%, Fe≤0.8%, and Cu≤0.25%, Mn≤0.10%, Mg 1.0%～2.0%, Zn≤0.20%, Bi 0.02%～0.20%, other impurity≤0.15%, surplus is Al.
4104 aluminium alloys are to be the aluminium alloy of main alloy element with the Si element, and this alloy is because si content is high, and its fusing point is relatively low; Fluidity of molten is good; More, increased the cross flow property of this material in the vacuum brazing process especially greatly, the gap fillibility because add the rare metal bismuth in this alloy; Make between dividing plate and fin, the strip of paper used for sealing weld seam more firm, no leak source and rosin joint.
Because Si accounts for main component in this alloy, and mainly with α+Si eutectic and β (Al
5FeSi) form exists, and si content increases, and the flowability of alloy solution increases, simultaneously, and the intensity of alloy and corrosion-resistant also raising thereupon.
Bismuth is a kind of low-melting-point metal, in alloy, adds the trace bismuth element, better forms metal vapors, cross flow and filling weld gap when helping vacuum brazing.
The present invention is applied to the dividing plate of all kinds of heat exchangers; Can solve leak source and cracking phenomena that aluminum plate-fin heat exchanger occurs effectively in the vacuum brazing process; Have stronger tensile strength and heat-conductive characteristic; And the material thickness of original heat exchanger dividing plate reduced more than 20%, clad ratio has been broken through the clad ratio limit more than 18%.Satisfying under heat exchanger each item performance indications prerequisite, thickness can reach 0.45～0.5mm, can save dividing plate with 20% of material amount, reduces vacuum brazing and leaks weldering rate about 5%.
The specific embodiment
The matrix blank is made: when aluminium alloy smelting; Divide order to add various metallic additions by the alloy requirement, melting and casting becomes the 3003 alloy matrix aluminum blanks of thick 280mm, carries out the single hot-roll cogging and becomes 170mm thick; Carry out surface treatment again, chemical composition should meet related standards.
The composite bed blank is made: when aluminium alloy smelting; In conventional composite bed blank 4004 alloys, add 0.02%～0.20% bismuth element by the alloy requirement; Melting and casting becomes 4104 aluminium alloy cast ingots of thick 300mm, carries out surface treatment again and is rolled into 62mm thick stock material.
Layer blank 4104 aluminium alloys of processing that are laminated with are in the same place with base layer 3003 aluminum alloy surface processing back seam, and through heating the compound and cold rolling thickness 0.45～0.5mm of one-tenth of hot rolling, the height of clad ratio about 20% is laminated with the ultrathin brazed aluminum alloy composite plate of rate.
What should explain at last is: obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (2)
1. one kind high is laminated with the ultrathin brazed aluminum alloy composite plate of rate, and it is characterized in that: said composite plate is for compound respectively one deck is laminated with a layer structure on the upper and lower surface of base layer, and the base layer material is 3003 aluminium alloys; Being laminated with layer material is 4104 aluminium alloys; Composite plate thickness is 0.45～0.5mm, and clad ratio reaches 20%, and clad ratio accounts for the percentage of composite plate gross thickness for the single face coating thickness.
2. height as claimed in claim 1 is laminated with the ultrathin brazed aluminum alloy composite plate of rate, and it is characterized in that: the said stratification composition that is laminated with is: Si 9.0%～10.5%, Fe≤0.8%; Cu≤0.25%, Mn≤0.10%, Mg 1.0%～2.0%; Zn≤0.20%; Bi 0.02%～0.20%, other impurity≤0.15%, and surplus is Al.
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| CN2012102602533A CN102748980A (en) | 2012-07-26 | 2012-07-26 | High covering rate ultra-thin brazing aluminum alloy composite board |
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| CN2012102602533A CN102748980A (en) | 2012-07-26 | 2012-07-26 | High covering rate ultra-thin brazing aluminum alloy composite board |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031472A (en) * | 2012-12-26 | 2013-04-10 | 西南铝业（集团）有限责任公司 | Brazing sheet for air separation equipment and fabrication method thereof |
| CN103612434A (en) * | 2013-11-25 | 2014-03-05 | 银邦金属复合材料股份有限公司 | Large-proportion hot-rolled composite aluminum alloy material and hot rolling compounding method thereof |
| CN104372207A (en) * | 2013-08-12 | 2015-02-25 | 大力神铝业股份有限公司 | 4004 aluminum alloy for soldering |
| CN106482572A (en) * | 2016-10-14 | 2017-03-08 | 无锡市冠云换热器有限公司 | It is applied to the oil cooler of engineering machinery |
| CN106926527A (en) * | 2017-01-20 | 2017-07-07 | 无锡市世达精密焊管制造有限公司 | Spiral heat exchanger is used and adds Si, Mg composite plate and preparation method thereof |
| CN107782185A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and preparation method thereof |
| CN107782183A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and its manufacture method |
| CN107782186A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and its manufacture method |
| WO2019196779A1 (en) * | 2018-04-13 | 2019-10-17 | 周德敬 | Brazed aluminum alloy composite bottom plate and heating coil |
| CN114228271A (en) * | 2021-12-28 | 2022-03-25 | 郑州机械研究所有限公司 | Brazing sheet for brazing titanium alloy plate fin radiator and preparation method and application thereof |
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| US5234759A (en) * | 1990-03-09 | 1993-08-10 | Furukawa Aluminum Co., Ltd. | Brazing sheet comprising an Al--Mg--Si alloy brazing material |
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| CN101124451A (en) * | 2005-02-17 | 2008-02-13 | 住友轻金属工业株式会社 | Aluminum alloy brazing fin material for heat exchanger |
| CN102554585A (en) * | 2010-12-30 | 2012-07-11 | 萨帕铝热传输(上海)有限公司 | Aluminum alloy brazing sheet and manufacturing method thereof as well radiator part |
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Patent Citations (5)
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| US5234759A (en) * | 1990-03-09 | 1993-08-10 | Furukawa Aluminum Co., Ltd. | Brazing sheet comprising an Al--Mg--Si alloy brazing material |
| CN1726112A (en) * | 2002-12-13 | 2006-01-25 | 克里斯铝轧制品有限公司 | Brazing sheet product having a clad layer and a coated layer of iron alloy and method of its manufacture |
| CN101072673A (en) * | 2004-10-19 | 2007-11-14 | 阿勒里斯铝业科布伦茨有限公司 | Method of producing an aluminium alloy brazing sheet and light brazed heat exchanger assemblies |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031472A (en) * | 2012-12-26 | 2013-04-10 | 西南铝业（集团）有限责任公司 | Brazing sheet for air separation equipment and fabrication method thereof |
| CN103031472B (en) * | 2012-12-26 | 2016-02-17 | 西南铝业（集团）有限责任公司 | A kind of air separation plant brazing sheet and preparation method thereof |
| CN104372207A (en) * | 2013-08-12 | 2015-02-25 | 大力神铝业股份有限公司 | 4004 aluminum alloy for soldering |
| CN103612434A (en) * | 2013-11-25 | 2014-03-05 | 银邦金属复合材料股份有限公司 | Large-proportion hot-rolled composite aluminum alloy material and hot rolling compounding method thereof |
| CN103612434B (en) * | 2013-11-25 | 2016-08-24 | 银邦金属复合材料股份有限公司 | A kind of vast scale method hot rolling aluminum alloy materials and hot rolling compounding method thereof |
| CN107782186A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and its manufacture method |
| CN107782185A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and preparation method thereof |
| CN107782183A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Ultra-thin composite phase transformation suppresses heat transfer plate and its manufacture method |
| CN106482572A (en) * | 2016-10-14 | 2017-03-08 | 无锡市冠云换热器有限公司 | It is applied to the oil cooler of engineering machinery |
| CN106926527A (en) * | 2017-01-20 | 2017-07-07 | 无锡市世达精密焊管制造有限公司 | Spiral heat exchanger is used and adds Si, Mg composite plate and preparation method thereof |
| WO2019196779A1 (en) * | 2018-04-13 | 2019-10-17 | 周德敬 | Brazed aluminum alloy composite bottom plate and heating coil |
| CN114228271A (en) * | 2021-12-28 | 2022-03-25 | 郑州机械研究所有限公司 | Brazing sheet for brazing titanium alloy plate fin radiator and preparation method and application thereof |
| CN114228271B (en) * | 2021-12-28 | 2024-05-03 | 郑州机械研究所有限公司 | Brazing sheet for brazing titanium alloy plate-fin radiator as well as preparation method and application thereof |
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Application publication date: 20121024 |