CN103352146B - Aluminum alloy - Google Patents
Aluminum alloy Download PDFInfo
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- CN103352146B CN103352146B CN201310332873.8A CN201310332873A CN103352146B CN 103352146 B CN103352146 B CN 103352146B CN 201310332873 A CN201310332873 A CN 201310332873A CN 103352146 B CN103352146 B CN 103352146B
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- casting
- aluminium
- flat tube
- aluminium alloy
- alloy
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000004411 aluminium Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000007670 refining Methods 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005275 alloying Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910052752 metalloid Inorganic materials 0.000 description 3
- 150000002738 metalloids Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
Abstract
The present invention relates to an aluminum alloy and a preparation method thereof, wherein components of the aluminum alloy comprise: 0.05-0.09 wt% of Sc, 0.006-0.01 wt% of As, 0.35-0.4 wt% of Si, 0.45-0.5 wt% of Fe, 0.65-0.7 wt% of Mn, 0.09-0.1 wt% of Ti, and the balance of aluminum and inevitable impurities.
Description
Technical field
The present invention relates to a kind of aluminium alloy, more specifically, the invention still further relates to a kind of flat tube utilizing this aluminium alloy to make, and comprise the aluminium micro-channel heat exchanger of this flat tube.
Background technology
Aluminium is the second largest metalloid material that output is only second to iron and steel, and because performance is good, purposes is wide, and requirement is large, and cost recovery is low, is described as " omnipotent metal ".Statistics shows: have 113 industries to use aluminum products in existing 124 industries of China, interrelationship between industries is up to 91%, and thus aluminium industry is one of mainstay starting material industry of national sustained economic development.Aluminium Thermal Performance of Micro Channels organ pipe is that one is applied to air-conditioning system novel environment-friendly refrigerant carrying conduit component (material), first on automotive air-conditioning system, obtaining pressure use, (European Union is defined as 1996, China is defined as 2002), along with the rejuvenation and development of national automobile industry, drive the demand rapid growth to high-quality tide of motorism exchanging tube (air-conditioning aluminium flat conduit).
Aluminium micro channel heat exchange flat tube due to wall thickness too thin, hole is little and many, production difficulty is very large, domestic interior-capital-enterprise does not have ability to produce at all, the producer having the ability at present to produce this product is in the world few, its production technology substantially by Norway's Hydro, Mitsubishi, Furukawa Electronic, Korea S one to enter etc. external minority producer monopolize.
Along with developing by leaps and bounds of Domestic Automotive Industry, auto-parts degree domestic improves constantly, be badly in need of radiator of automobile air conditioner (comprising condenser and vaporizer) high-accuracy aluminum alloy porous flat pipe and circular pipe, add up according to relevant industries: radiator of automobile air conditioner high-accuracy aluminum alloy porous flat pipe material 4-5kg/, wherein, corrugated tube type and cocurrent flow type condenser aluminum alloy porous flat pipe material are 2-3kg/, and corrugated tube type and pipe type vaporizer aluminum alloy porous flat pipe and circular pipe are 2-2.5kg/.China has become the seventh-largest automobile making state of the world and the most big country of automobile market.Automobile factory's radiator of automobile air conditioner high-accuracy aluminum alloy tubing year total requiremants is 13600-17000 ton; In addition, a large amount of air conditioner heat radiator component market (being about 3 times of depot's dosage), amount to year total requiremants be 54400-68000 ton.Along with parallel-flow radiator of automobile air conditioner adopts environment-friendly type R134a refrigeration agent, the demand of radiator of automobile air conditioner high-accuracy aluminum alloy porous flat pipe material will have very big increase, but these product technology contents are high, production difficulty is very big, domestic interior-capital-enterprise not yet can carry out scale production, and product relies on substantially from day external import.Full aluminium Thermal Performance of Micro Channels pipe is the critical material manufacturing new type high efficient heat exchanger, is just becoming one of emphasis of field of air conditioning research both at home and abroad at present.
Micro channel heat exchanging tube (being commonly called as parallel-flow evaporator and condenser) is one of most important key components and parts material being suitable for New air conditioner in environment protecting mode system, is just becoming the emphasis of field of air conditioning research both at home and abroad at present.Find out as far back as two professors by Stanford Univ USA in 1981, within 1996, start the mandatory automotive air-conditioning system (automobile industry is called " parallel-flow ", and mandatory use plays on January 1st, 2002 in China) that to be applied to environmental protection refrigerant R134a be refrigeration agent.Parallel-flow aluminium flat conduit is a kind of thin-walled porous flat tubulose material Tu.
Therefore, research obtains a kind of lightweight, good heat conductivity, and can break the material of external monopolization, becomes the technical barrier that China this area needs solution badly.
The flat tube be made up of aluminium alloy of the present invention have lightweight, heat conductivility is high, drawing intensity is high, and the withstand voltage properties of circular hole Micro Channel Architecture is better, the advantage waited.
Summary of the invention
The present invention relates to a kind of aluminium alloy, its composition comprises (wt%): Sc:0.05-0.09, As:0.006-0.01, S1:0.35-0.4, Fe:0.45-0.5, Mn:0.65-0.7, Ti:0.09-0.1, the aluminium of surplus and inevitable impurity.
The above-mentioned aluminium alloy of a kind of aluminium microchannel heat radiating flat tube, its composition comprises (wt%): Sc:0.07, As:0.008, Si:0.36, Fe:0.46, Mn:0.67, Ti:0.09, the aluminium of surplus and inevitable impurity.
The flat tube that a kind of above-mentioned aluminium alloy is made.
Manufacture a method for aluminium alloy microchannel heat radiating flat tube, it comprises:
1) prepare burden according to above-mentioned alloying constituent, then carry out aluminium alloy casting, in order to eliminate gas and nonmetallic impurity, carrying out refining and modifying, after refining, alloy being injected mold, carry out Continuous casting process, casting rate is 2.6-3 rice per hour, and then casting, coils,
2) cast-rolling stock is extruded, flat tube of the present invention adopts with the extruding of diameter 65mm cylinder on 400t extrusion machine, extrusion process parameters: container temperature 360-380 DEG C, ingot casting Heating temperature 400-420 DEG C, mold heated temperature 390-400 DEG C, extrusion speed 12-14m/min.
A kind of aluminium micro-channel heat exchanger, it comprises above-mentioned flat tube.
The invention still further relates to a kind of method manufacturing aluminum alloy flat tube, it comprises:
1, prepare burden according to above-mentioned alloying constituent, then carry out aluminium alloy casting, in order to eliminate gas and nonmetallic impurity, carrying out refining and modifying, after refining, alloy being injected mold, carry out Continuous casting process, casting rate is 3 meters per hour, and then casting, coils.
2, extrude cast-rolling stock, flat tube of the present invention adopts with the extruding of diameter 65 cylinder on 400t extrusion machine, and to repeatedly extruding trial-production and processing parameter is tested, extrusion temperature is too high, and mould is blocked up in the too thin easy appearance of flat tube wall thickness; Temperature is too low, and squeeze increases too many, and Die Elastic Deformation greatly also there will be stifled mould phenomenon; Extrusion speed can not be too fast, otherwise there will be the phenomenon such as misrun, cavity in the middle of flat tube, the present invention is by testing the extrusion process parameters determining applicable aluminium alloy of the present invention many times, container temperature 360-380 DEG C, ingot casting Heating temperature 400-420 DEG C, mold heated temperature 390-400 DEG C, extrusion speed 12-14m/min.
Below the effect of alloying constituent of the present invention is sketched.
Alloy strength increases along with Mn content and improves, but its too high levels can produce frangible compounds MnA16, and produce cracking when follow-up rolling, Mn element of the present invention rationally not only ensures intensity of aluminum alloy but also have good plasticity.
Fe, Si are also aluminium alloy main component elements of the present invention, and constituent content is reasonable, resistance to deformation when can reduce casting crack proneness and rolling.
Scandium can not only significantly refinement cast alloy crystal grain, improve recrystallization temperature thus improve the intensity of aluminium alloy and toughness, and significantly can improve the weldability of aluminium alloy, thermotolerance, corrosion stability and thermostability.The density of scandium (Sc) is low, there is the effect of magnesium-yttrium-transition metal and this two metalloid of rare earth metal in Al and Alalloy simultaneously, but effect is large more than this two metalloids impact on aluminium alloy, aluminium alloy containing Sc intensity is high, Heat stability is good, have strong aging hardening effect, preferred amounts of the present invention is Sc:0.05-0.09.
Applicant finds, As arsenic is appropriate in aluminium alloy adds intensity and the thermal conductivity that can improve aluminum alloy flat tube, but when arsenic content too much can cause metal to become fragile, bad processing, therefore, preferred amounts of the present invention is As:0.006-0.01.
Aluminum alloy flat tube of the present invention, tensile strength reaches 95-100MPa, and thermal conductivity reaches, 1.35-1.40w/ (m DEG C)
The present invention by the optimization of composition and technique, obtain lightweight, heat conductivility is high, tensile strength is high; The better flat tube of withstand voltage properties of circular hole Micro Channel Architecture.
Embodiment:
The specific embodiment of the present invention is as described below, those skilled in the art are to be understood that, this technique is only and schematically illustrates, those skilled in the art clearly can understand the present invention further by the specific embodiment of the present invention given below, but they are not limitation of the invention.
Embodiment: according to alloying constituent batching, al alloy component is (wt%): Sc:0.08, As:0.007, Si:0.38, Fe:0.46, Mn:0.65, Ti:0.09, the aluminium of surplus and inevitable impurity, then carry out aluminium alloy casting, in order to eliminate gas and nonmetallic impurity, carrying out refining and modifying, after refining, alloy being injected mold, carry out Continuous casting process, casting rate is 3 meters per hour, and then casting, coils.
Extrude cast-rolling stock, flat tube of the present invention adopts with the extruding of diameter 65 cylinder on 400t extrusion machine, and to repeatedly extruding trial-production and processing parameter is tested, extrusion temperature is too high, and mould is blocked up in the too thin easy appearance of flat tube wall thickness; Temperature is too low, and squeeze increases too many, and Die Elastic Deformation greatly also there will be stifled mould phenomenon; Extrusion speed can not be too fast, otherwise there will be the phenomenon such as misrun, cavity in the middle of flat tube, and the present invention passes through test many times and determines the extrusion process parameters of applicable aluminium alloy of the present invention, container temperature 370 DEG C, ingot casting Heating temperature 410 DEG C,
Mold heated temperature 39 DEG C, extrusion speed 123m/min.
After tested, the present invention obtains flat tube tensile strength 96MPa, and thermal conductivity 1.36w/ (m DEG C), obtains required performance.
Claims (1)
1. manufacture a method for aluminium alloy microchannel heat radiating flat tube, it comprises:
1) comprise (wt%) according to composition: Sc:0.07, As:0.008, Si:0.36, Fe:0.46, Mn:0.67, Ti:0.09, the aluminium of surplus and inevitably impurity, alloying constituent batching, then carry out aluminium alloy casting, in order to eliminate gas and nonmetallic impurity, carrying out refining and modifying, after refining, alloy being injected mold, carry out Continuous casting process, casting rate is 2.6-3 rice per hour, and then casting, coils;
2) cast-rolling stock is extruded, flat tube of the present invention adopts with the extruding of diameter 65mm cylinder on 400t extrusion machine, extrusion process parameters: container temperature 360-380 DEG C, ingot casting Heating temperature 400-420 DEG C, mold heated temperature 390-400 DEG C, extrusion speed 12-14m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332873.8A CN103352146B (en) | 2013-08-02 | 2013-08-02 | Aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332873.8A CN103352146B (en) | 2013-08-02 | 2013-08-02 | Aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352146A CN103352146A (en) | 2013-10-16 |
| CN103352146B true CN103352146B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310332873.8A Expired - Fee Related CN103352146B (en) | 2013-08-02 | 2013-08-02 | Aluminum alloy |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525117A (en) * | 2016-02-01 | 2016-04-27 | 安徽乾通教育制造有限公司 | Aluminum alloy material capable of being used for manufacturing cylinder cover and preparation method for aluminum alloy material |
| CN111304475A (en) * | 2020-03-31 | 2020-06-19 | 江苏亨通电力特种导线有限公司 | High-performance aluminum material for air conditioner connecting pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136581A1 (en) * | 2000-03-23 | 2001-09-26 | The Furukawa Electric Co., Ltd. | Method of manufacturing a fin material for brazing |
| CN101250649A (en) * | 2008-01-21 | 2008-08-27 | 浙江康盛股份有限公司 | Aluminum alloy for air conditioner tube and method for manufacturing same |
| CN103266246A (en) * | 2007-09-21 | 2013-08-28 | 阿勒里斯铝业科布伦茨有限公司 | Al-Cu-Li alloy product suitable for aerospace application |
-
2013
- 2013-08-02 CN CN201310332873.8A patent/CN103352146B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136581A1 (en) * | 2000-03-23 | 2001-09-26 | The Furukawa Electric Co., Ltd. | Method of manufacturing a fin material for brazing |
| CN103266246A (en) * | 2007-09-21 | 2013-08-28 | 阿勒里斯铝业科布伦茨有限公司 | Al-Cu-Li alloy product suitable for aerospace application |
| CN101250649A (en) * | 2008-01-21 | 2008-08-27 | 浙江康盛股份有限公司 | Aluminum alloy for air conditioner tube and method for manufacturing same |
Non-Patent Citations (1)
| Title |
|---|
| 高质量铝合金系列杆材制造工艺探讨;尤伟任等;《电线电缆》;20121231(第3期);15-19 * |
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| CN103352146A (en) | 2013-10-16 |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Pengcheng Inventor after: Xia Zhisheng Inventor after: Fang Sanshui Inventor after: Sun Shujun Inventor before: Fang Zhijun Inventor before: Xia Zhisheng Inventor before: Fang Sanshui Inventor before: Sun Shujun |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: FANG ZHIJUN XIA ZHISHENG FANG SANSHUI SUN SHUJUN TO: WANG PENGCHENG XIA ZHISHENG FANG SANSHUI SUN SHUJUN |
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