CN104233007A - High-thermal-conductivity heat transfer fin and manufacturing method thereof - Google Patents
High-thermal-conductivity heat transfer fin and manufacturing method thereof Download PDFInfo
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- CN104233007A CN104233007A CN201410428521.7A CN201410428521A CN104233007A CN 104233007 A CN104233007 A CN 104233007A CN 201410428521 A CN201410428521 A CN 201410428521A CN 104233007 A CN104233007 A CN 104233007A
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Abstract
The invention relates to a high-thermal-conductivity heat transfer fin and a manufacturing method thereof, belonging to the field of heat dissipation fins for heat exchangers. The high-thermal-conductivity heat transfer fin comprises the following components in percentage by weight: 0.12-1.0 wt% of Si, 1.0-2.0 wt% of Fe, 0-0.5 wt% of Mn, 0.3-2 wt% of Zn, 0.8-1.5 wt% of Ni, and the balance of Al and inevitable impurities. The manufacturing method comprises the following steps: 1) casting a melt; 2) rolling the melt into a plate blank; 3) carrying out at least one pass of cold rolling on the plate blank, rolling, and carrying out annealing treatment on the cold-rolled roll; and 4) carrying out at least one pass of cold rolling on the cold-rolled roll subjected to annealing treatment. The high-thermal-conductivity heat transfer fin has the advantages of high strength and favorable thermal conductivity, satisfies the requirement for light weight, and enhances the cooling efficiency of the heat exchanger. The manufacturing method has the advantage of low production cost; and the product has high strength and favorable thermal conductivity.
Description
Technical field
The present invention relates to a kind of high thermal conductivity Heat transmission fin and manufacture method thereof, be specifically related to a kind of heat exchanger radiating fin.
Background technology
Aluminum-made heat exchanger widely uses as the car heat exchanger of the vaporizer or condenser etc. of scatterer, heater core, oil cooler, side cooler, vehicle air conditioner.Car heat exchanger is produced mainly through method for brazing (brazing), mainly comprises vacuum brazing and controlled atmosphere soldering.Usually, use Al-Si system alloy as solder, brazing temperature is at about 600 DEG C, and now solder melts completely, is carried out the metallurgical binding of brazed joint by solder.
In recent years, in order to make automobile have higher performance, need the performance improving interchanger, make its weight lighter, weather resistance is higher, has higher requirement to the performance of material, needs the aluminum alloy fin material that can adapt with it of development of new.As the interchanger for car, by being managed, fin carries out thinning and makes its weight lighter.
Fin is as the important heat transfer component of heat exchange, and more high strength and these two performances of better thermal conduction are all the important factors meeting lightweight and high-efficiency compact.Heat exchanger is finally caused to lose efficacy if the strength of materials not, will be out of shape even to rupture as fin.
Current common fin 3003 series materials, but 3003 fin materials of standard from intensity and thermal conductivity all can not meet the demand of lightweight/high efficiency intensity and thermal conductivity.
Summary of the invention
According to above the deficiencies in the prior art, technical problem to be solved by this invention is: provide a kind of high thermal conductivity Heat transmission fin, the strength of materials is high, and heat conduction efficiency is good, meets lightweight requirements, improves heat exchanger cooling efficiency.
High thermal conductivity Heat transmission fin of the present invention, it is characterized in that: its component and weight percent are: Si:0.12 ~ 1.0wt%, Fe:1.0 ~ 2.0wt%, Mn:0 ~ 0.5wt%, Zn:0.3 ~ 2wt%, Ni:0.8 ~ 1.5wt%, surplus is Al and inevitable impurity.
Described content of impurities≤0.15wt%, impurity single-element content≤0.05wt%.
Below the interpolation reason of each component element of high thermal conductivity Heat transmission fin and interpolation scope are described.
Si:Si and Fe forms AlFeSi based compound together, play dispersion-strengthened be used for improve intensity, reduce the solid solution capacity of Fe simultaneously, thus improve thermal conductivity.If Si content is lower than 0.12wt%, do not reach this effect, if Si content is higher than 1.0wt%, then easily causes fin material temperature of fusion to decline, be unfavorable for soldering.
Fe:Fe and Si forms the particle of disperse, can improve the intensity of fin.Fe maximum solid solution degree in the Al-Fe of normal temperature is less than 0.05%, and thermal conductivity is good, and the present invention significantly improves the content of Fe element, makes Fe constituent content be not less than 1.0wt%, not only meets the requirement of strength of fin but also can improve heat conductivility.Fe constituent content, not higher than 2.0wt%, is avoided having an impact to material property, is brought disadvantageous effect to castingprocesses.
Zn: the Zn in core, the corrosion potential of core can be made to reduce, strengthen sacrificial anode effect.The content of Zn is 0.3-2%.If less than 0.3%, its effect diminishes, and as more than 2.0%, then the erosion resistance of core self is deteriorated.
Ni:Ni maximum solid solution degree in the Al-Ni of normal temperature is less than 0.05%.Mainly form compound as alloying element Ni and can play dispersion-strengthened, improve the erosion resistance of material simultaneously.If less than 0.8wt%, then inoperative, if be greater than 1.5wt%, then performance boost is limited, and cost is higher.
Mn:Mn can add the amount being less than 0.5wt%, also can not add, and mainly plays a part to adjust current potential, after adding and Si, Al form AlMnSi based compound, the intensity of raising alloy material.
Another object of the present invention is: provide a kind of high thermal conductivity Heat transmission fin manufacture method, production cost is low, and product strength is high, and thermal conductivity is good.
The manufacture method of this high thermal conductivity Heat transmission fin comprises the following steps: 1) build the melt had as above-mentioned high thermal conductivity Heat transmission fin chemical constitution; 2) thickness this melt casting is become to be the slab of 3.5mm ~ 15mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.1mm ~ 0.8mm, and curling rolling; 3) cold rolling coil is carried out anneal; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.05mm ~ 0.15mm; In step 3, cold rolling coil carries out the anneal of 1 ~ 3 hour between 200 ~ 450 DEG C.
Compared with prior art, the beneficial effect that the present invention has is:
This high thermal conductivity Heat transmission fin adds type and addition by conservative control alloying element, while meeting lightweighting materials requirement of strength, strengthens heat exchanger effectiveness, improves heat exchanger cooling efficiency.Compared to traditional direct method of cooling, adopt continuous casting production process, reduce production cost, be beneficial to the raising of quality product.
Embodiment
Embodiment 1:
High thermal conductivity Heat transmission fin A1, its component and weight percent are: Si:0.12wt%, Fe:1.5wt%, Zn:0.5wt%, Ni:0.8wt%, surplus is Al and inevitable impurity, impurity single-element content≤0.05wt%, content of impurities≤0.15wt%.
The manufacture method of high thermal conductivity Heat transmission fin A comprises the following steps: 1) build the melt with above-mentioned chemical constitution; 2) thickness this melt casting is become to be the slab of 5mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.6mm, and curling rolling; 3) cold rolling coil is carried out the anneal of 2 hours at 380 DEG C; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.08mm.
Then, using the above-mentioned fin material made as test materials, evaluate according to the method below, result is shown in table 2.
(1) thermal conductivity of material
Specific conductivity guard of honor aluminium is adopted to carry out conductivity measurement.
(2) soldering simulated experiment curve and equipment
Be warming up to 600 DEG C from room temperature through about 45 minutes, and be incubated 3 minutes, cooling air cooling after 10 minutes under nitrogen (N2) protection.Experimental installation is controlled atmosphere soldering oven.
(3) sample preparation and strength test after soldering
The test materials after above soldering process according to EN10002-1 standard system for tensile testing samples, gauge length is 50mm, carries out stretching experiment, the intensity of test material and unit elongation in room temperature with 20mm/ minute draw speed.
Embodiment 2
High thermal conductivity Heat transmission fin A2, its component and weight percent are: Si:0.25wt%, Fe:1.0wt%, Mn:0.2wt%, Zn:2.0wt%, Ni:1.2wt%, surplus is Al and inevitable impurity, impurity single-element content≤0.05wt%, content of impurities≤0.15wt%.
Its manufacture method comprises the following steps: 1) build the melt with above-mentioned chemical constitution; 2) thickness this melt casting is become to be the slab of 10mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.8mm, and curling rolling; 3) cold rolling coil is carried out the anneal of 1 hour at 200 DEG C; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.1mm.
All the other are with embodiment 1.
Embodiment 3:
High thermal conductivity Heat transmission fin A3, its component and weight percent are: Si:1.0wt%, Fe:1.5wt%, Mn:0.05wt%, Zn:0.3wt%, Ni:1.5wt%, surplus is Al and inevitable impurity, impurity single-element content≤0.05wt%, content of impurities≤0.15wt%.
Its manufacture method comprises the following steps: 1) build the melt with above-mentioned chemical constitution; 2) thickness this melt casting is become to be the slab of 15mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.5mm, and curling rolling; 3) cold rolling coil is carried out between 450 DEG C the anneal of 3 hours; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.15mm.
Embodiment 4:
High thermal conductivity Heat transmission fin A4, its component and weight percent are: Si:0.57wt%, Fe:2wt%, Mn:0.5wt%, Zn:0.6wt%, Ni:1.0wt%, surplus is Al and inevitable impurity, impurity single-element content≤0.05wt%, content of impurities≤0.15wt%.
Its manufacture method comprises the following steps: 1) build the melt with above-mentioned chemical constitution; 2) thickness this melt casting is become to be the slab of 3.5mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.1mm, and curling rolling; 3) cold rolling coil is carried out between 300 DEG C the anneal of 1.5 hours; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.05mm.
Comparative example 1:
Standard 3003 material B 1, containing Si:0.2wt%, Fe:0.5wt%, Mn:1.11wt%, Zn:1.5wt%, all the other are with embodiment 1.
Comparative example 2:
Standard 3003 material B 2, containing Si:0.2wt%, Fe:0.5wt%, Mn:1.11wt%, Zn:1.5wt%, all the other are with embodiment 2.
Comparative example 3:
Standard 3003 material B 2, containing Si:0.2wt%, Fe:0.5wt%, Mn:1.11wt%, Zn:1.5wt%, all the other are with embodiment 3.
Comparative example 4:
Standard 3003 material B 2, containing Si:0.2wt%, Fe:0.5wt%, Mn:1.11wt%, Zn:1.5wt%, all the other are with embodiment 4.
Table 1 the present invention and standard 3003 material contrast
| Alloy combination | Thickness/mm | Specific conductivity | Simulation soldering strength |
| A1 | 0.08 | 48 | 135 |
| B1 | 0.08 | ? | ? |
| A2 | 0.08 | 50 | 131 |
| B2 | 0.08 | ? | ? |
| A3 | 0.08 | 50 | 130 |
| B3 | 0.08 | ? | ? |
| A4 | 0.08 | 51 | 131 |
| B4 | 0.08 | 40 | 112 |
Can be clear and definite by table 1, as test materials A1 ~ A4 specific conductivity after brazing of example of the present invention between 48-51, tensile strength after soldering is up to more than 130MPa, in contrast, the specific conductivity of standard material B1 ~ B4 is 40 ~? tensile strength after soldering is lower than 115MPa, and by contrast, the present invention all has very large lifting in thermal conductivity and intensity.
Claims (4)
1. a high thermal conductivity Heat transmission fin, it is characterized in that: its component and weight percent are: Si:0.12 ~ 1.0wt%, Fe:1.0 ~ 2.0wt%, Mn:0 ~ 0.5wt%, Zn:0.3 ~ 2wt%, Ni:0.8 ~ 1.5wt%, surplus is Al and inevitable impurity.
2. high thermal conductivity Heat transmission fin according to claim 1, is characterized in that: described content of impurities≤0.15wt%, impurity single-element content≤0.05wt%.
3. a manufacture method for high thermal conductivity Heat transmission fin as claimed in claim 1 or 2, is characterized in that: comprise the following steps: 1) build the melt with chemical constitution as claimed in claim 1 or 2; 2) thickness this melt casting is become to be the slab of 3.5mm ~ 15mm; 3) by cold rolling through at least one passage of slab, rolling thickness is 0.1mm ~ 0.8mm, and curling rolling; 3) cold rolling coil is carried out anneal; 4) cold rolling coil after anneal is passed through the cold rolling of at least one passage, be rolled to finished product thickness 0.05mm ~ 0.15mm.
4. the manufacture method of high thermal conductivity Heat transmission fin according to claim 3, is characterized in that: in step 3, and cold rolling coil carries out the anneal of 1 ~ 3 hour between 200 ~ 450 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566959A (en) * | 2015-10-10 | 2017-04-19 | 中兴通讯股份有限公司 | Aluminum alloy material and preparation method thereof |
| CN108866402A (en) * | 2017-05-09 | 2018-11-23 | 南京工程学院 | A kind of automobile-used magnesium alloy of High-strength light-weight |
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| CN1578844A (en) * | 2001-10-05 | 2005-02-09 | 克里斯有限合伙公司 | Aluminium alloy for making fin stock material |
| CN101230431A (en) * | 2006-12-21 | 2008-07-30 | 三菱铝株式会社 | Method for manufacturing high-strength aluminum alloy material for vehicle heat exchanger |
| CN102011036A (en) * | 2010-11-24 | 2011-04-13 | 肇庆莱尔达光电科技有限公司 | Die casting aluminum alloy |
| CN103906852A (en) * | 2012-01-27 | 2014-07-02 | 株式会社Uacj | Aluminum alloy for heat exchanger fin and manufacturing method therefor, as well as heat exchanger using said aluminum alloy |
| CN103930577A (en) * | 2011-12-02 | 2014-07-16 | 株式会社Uacj | Aluminum alloy material and aluminum alloy structure and production process therefor |
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- 2014-08-27 CN CN201410428521.7A patent/CN104233007A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578844A (en) * | 2001-10-05 | 2005-02-09 | 克里斯有限合伙公司 | Aluminium alloy for making fin stock material |
| CN101230431A (en) * | 2006-12-21 | 2008-07-30 | 三菱铝株式会社 | Method for manufacturing high-strength aluminum alloy material for vehicle heat exchanger |
| CN102011036A (en) * | 2010-11-24 | 2011-04-13 | 肇庆莱尔达光电科技有限公司 | Die casting aluminum alloy |
| CN103930577A (en) * | 2011-12-02 | 2014-07-16 | 株式会社Uacj | Aluminum alloy material and aluminum alloy structure and production process therefor |
| CN103906852A (en) * | 2012-01-27 | 2014-07-02 | 株式会社Uacj | Aluminum alloy for heat exchanger fin and manufacturing method therefor, as well as heat exchanger using said aluminum alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566959A (en) * | 2015-10-10 | 2017-04-19 | 中兴通讯股份有限公司 | Aluminum alloy material and preparation method thereof |
| CN106566959B (en) * | 2015-10-10 | 2020-06-09 | 中兴通讯股份有限公司 | Aluminum alloy material and preparation method thereof |
| CN108866402A (en) * | 2017-05-09 | 2018-11-23 | 南京工程学院 | A kind of automobile-used magnesium alloy of High-strength light-weight |
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