CN110257673A - One kind is for producing car radiation composite fin aluminum foil material and preparation method thereof - Google Patents
One kind is for producing car radiation composite fin aluminum foil material and preparation method thereof Download PDFInfo
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- CN110257673A CN110257673A CN201910547308.0A CN201910547308A CN110257673A CN 110257673 A CN110257673 A CN 110257673A CN 201910547308 A CN201910547308 A CN 201910547308A CN 110257673 A CN110257673 A CN 110257673A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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Abstract
The present invention relates to one kind for producing car radiation composite fin aluminium foil and preparation method thereof, the material includes core material and upper layer and lower layer skin material, composite fin a part that aluminium foil is that car heat exchanger forms, the composite fin is lower with aluminium foil skin material fusing point, it is brazed at a high temperature of certain using its this lower feature of skin material fusing point, the fin skin material reaches fusing point and melts to realize the combination of the fin core material and heat exchanger other assemblies.The skin material is compounded in the upper and lower surfaces of the core material, the core material and skin material, obtains cast-rolling stock through continuous casting and rolling, realizes after cold rolling is compound compound.The preparation method high production efficiency, flexibility ratio are high, quality is high, and aluminum foil material clad ratio is more stable, and aluminium foil deposited strength height, fine corrosion resistance, sink-resistance performance after high temperature brazing is excellent；Car radiation composite fin prepared by the present invention is had excellent performance with aluminium foil in summary.
Description
Technical field
The present invention relates to metal material and metal material processing and field shaping techniques, and in particular to a kind of aluminium alloy
Car radiation composite fin aluminium foil and preparation method thereof.
Background technique
Non-composite fin for needing to be laid with weld tabs in heat exchanger assembling process, and composite fin realize brazing layer with
The combination of fin core, so that the step of pad weld tabs can be saved in heat exchanger assembling process, to be detached from man-made assembly realization
Mechanization production, improves packaging efficiency, reduces production cost.
In the past, largely used method hot rolling blank raw for car heat exchanger-fin structure cooling fin aluminum foil stock
It produces, production procedure such as attached drawing 2, it is more complicated from the method hot rolling heat dissipation composite fin technological process of production known to attached drawing 2.
Summary of the invention
It is an object of the invention to shorten the production cycle, improve production efficiency, reduction production cost, design a kind of for giving birth to
Car radiation composite fin aluminum foil material and preparation method thereof is produced, the preparation method is high-efficient, flexibility ratio is high, quality is high, aluminium
Foil material clad ratio is more stable, welding performance, sink-resistance performance and fine corrosion resistance.
To achieve the above object, the technical scheme adopted by the invention is that: one kind is for producing car radiation fin aluminium
Foil material, it is characterised in that: described for produce car radiation composite fin aluminum foil material to include core material and two layers of skin material, institute
State the upper and lower surfaces that two layers of skin material is compounded in the core material respectively.
The core material chemical constituent are as follows: 0.6~1.0wt% of silicon, 0~0.7wt% of iron, 0~0.2wt% of copper, manganese 1.0~
1.8wt%, 0~0.1wt% of magnesium, 1.0~2.0wt% of zinc, 0~0.2wt% of zirconium, individually can remove impurity content be 0~
0.05wt%, all content of impurities that not can remove are 0~0.15wt%, remaining ingredient is aluminium；
The skin material chemical constituent are as follows: 6.8~8.2wt% of silicon, 0~0.8wt% of iron, 0~0.25wt% of copper, manganese 0~
0.1wt%, 0~0.2wt% of zinc, not can remove impurity content individually is 0~0.05wt%, all not can remove content of impurities
For 0~0.15wt%, remaining ingredient is aluminium；Core material, skin material alloy pass through continuous casting and rolling respectively and core material blank, skin material base are made
Material, by cold-rolling practice complex cutification material-core material-skin material structure, skin material-core material-skin material structure is car radiation composite fin
Use aluminum foil material.
The present invention discloses car radiation composite fin aluminum foil material preparation method, the step of the preparation method
Are as follows:
(1) aluminium alloy smelting: aluminium alloy stock is subjected to melting according to the chemical constituent of the core material and skin material, is melted
Skin material aluminium alloy, core material aluminium alloy after refining；
(2) continuous casting and rolling；
(3) prepared by core material: obtaining core material Casting Rolled Sheet with step (2) continuous casting and rolling legal system and obtains thickness after cold rolling in 3.6-
The plate of 5.0mm, outer ring welding, the urgent steel band of plate face are annealed in the lehr, specific annealing conditions are as follows: rise in 3-5h
Turn 500-550 DEG C of heat preservation 2-5h of temperature after temperature to 550-580 DEG C of heat preservation 18-27h of target heating temperature；It comes out of the stove later air-cooled,
Obtain core material blank；
(4) prepared by skin material: obtaining skin material Casting Rolled Sheet with step (2) continuous casting and rolling legal system and carries out blank heat treatment, at blank heat
Specific step is as follows for reason: annealing in the lehr, Internal and external cycle welds, the urgent steel band of plate face, is warming up to target in 2-4h and adds
500-540 DEG C of heat preservation 10-18h of hot temperature turns 480-520 DEG C of heat preservation 2-6h of temperature later, comes out of the stove later air-cooled；With step (2)
Continuous casting and rolling legal system obtains after skin material Casting Rolled Sheet carries out blank heat treatment above-mentioned and is cold-rolled to 0.42-0.67mm, Zhi Houyou for the first time
Slitter carries out finishing trimming, and trimming is having a size of standby+20~70mm of core material width of institute；Straightening, which is crossed, after finishing processing corrects version type,
Clean the surface Residual oil；It carries out second after straightening cleaning to be heat-treated, the actual conditions of second of heat treatment are as follows: be warming up in 2-4h
430-470 DEG C of heat preservation 6-12h of target heating temperature turns 360-410 DEG C of heat preservation 2-5h of temperature；It comes out of the stove later air-cooled, obtains skin material
Blank；
(5) cold rolling is compound: the skin material blank and core material blank obtained by step (3), step (4) is rolled through cold composite rolling mill
System rolls compound, obtains 1.7-2.8mm cold rolling composite plate with the processing of suitable working modulus；
The compound combination for realizing skin material and core material of cold rolling, traditional method hot rolling needs process surface treatment (cleaning),
Core skin material pairing, heating, method hot rolling just may be implemented, and cold rolling of the present invention it is compound will surface treatment, core skin material match,
Cold rolling is compound to be combined, and a procedure can be completed, and substantially increases production efficiency.Core material, the preparation process of skin material are thick
Degree control precision is higher, and the compound surface treatment of cold rolling is realized by the way of mechanical automation, and table can be effectively ensured in this way
The effect of surface treatment and the stability of clad ratio.
(6) diffusion annealing: the cold rolling composite plate obtained by step (5), the urgent steel band of plate face are diffused in the lehr
Annealing, obtains cold rolling composite plate after diffusion annealing；Diffusion annealing actual conditions are as follows: target heating temperature 490- is warming up in 2-4h
520 DEG C of heat preservation 6-12h turn 360-430 DEG C of heat preservation 2-5h of temperature；
Recombination process, which stores higher driving force and high temperature diffusion annealing, can effectively promote metal diffusion to improve
The combination depth and intensity of metal.
(7) after the diffusion annealing for obtaining step (6) cold rolling composite plate rolling 0.5mm~0.75mm composite plate, after by
Slitter carries out finishing trimming, the aluminium volume after obtaining finishing trimming；
(8) cold rolling being carried out to the aluminium volume after step (7) finishing trimming, the aluminium for being rolled into thickness 0.16-0.25mm is rolled up, then into
It is made annealing treatment before row finished product, to fix aluminium volume surface, (aluminium rolls up surface to the aluminium volume good high temperature gummed tape of surface mount when annealing before annealing
High temperature gummed tape does not fall, keeps being bonded with what aluminium was rolled up), prevent circulating fan when annealing from dispelling aluminium volume outer ring, before finished product at annealing
The actual conditions of reason are as follows: 1-2h is warming up to 240-280 DEG C of heat preservation 2-5h, turns 420-460 DEG C of heat preservation 6-12h of temperature, turns temperature later
320-360 DEG C of heat preservation 2h；
(9) finish rolling is carried out to the aluminium foil obtained after making annealing treatment before step (8) finished product, is rolling to finished product 0.07-0.15mm；
(10) cutting packaging: by the width of obtained finished product cutting to needs, qualified product is obtained, is then packaged into
Library.
The preparation method of aforementioned automotive heat transmission clad aluminum foil, the core material and skin material are all made of continuous casting and rolling method and are made；
Aforementioned automotive heat dissipation composite fin aluminum foil material, the complex method are made for cold rolling composite algorithm, cold rolling
Compound pass reduction 55 ± 5% (i.e. suitable working modulus)；
The preparation method of aforementioned automotive heat dissipation composite fin aluminum foil material, needs after cold rolling is compound by diffusion annealing
Reason, to realize the combination of core material and skin material more depth；
Compared with the existing technology, the advantages and beneficial effects of the present invention are:
The present invention prepares core material, Pi Cai, core material, skin material casting plate thickness about 7.5mm, opposite ingot casting using continuous casting and rolling method
Thickness greatly reduces for (generally 400mm), shortens the production cycle, improves production efficiency, reduces production cost.It is cold
Rolling compound, which will be surface-treated, core skin material matches, cold rolling is compound combines, and a procedure can be completed, and substantially increase life
Produce efficiency.Core material, the preparation process thickness control accuracy of skin material are higher, and the compound surface treatment of cold rolling is using mechanical automation
Mode is realized, the effect of surface treatment and the stability of clad ratio are effectively ensured in this way.The aluminium foil of this method preparation is through high temperature
Deposited strength with higher and preferable corrosion resistance after welding, guarantee fin brazed when with excellent sagging resistance
Can, tensile strength reaches 180-220MPa, yield strength > 160Mpa, elongation percentage > 0.5%.The material can be used for controlled atmosphere
Protection soldering, composite material deposited strength is high, and resist collapse is had excellent performance, and can satisfy radiator to the performance of composite fin material
It is required that production method technique is controllable, and it is reproducible, it is easy to grasp, industry development needs can be met.
Detailed description of the invention
Fig. 1 sag resistance structure drawing of device；
Fig. 2 method hot rolling heat dissipation composite fin aluminium foil technological process of production block diagram.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be described in further detail, the reality
It applies example for explaining only the invention, protection scope of the present invention is not constituted and limited.
Embodiment 1
1, alloy proportion: silicon 0.6wt%, iron 0.2wt%, copper 0.05wt%, manganese 1.0wt%, magnesium 0.05wt%, zinc is pressed
1.1wt%, zirconium 0.1wt%, 0~0.05wt% of titanium prepare core material Casting Rolled Sheet with continuous casting and rolling method after melting；By alloy proportion:
Silicon 6.8wt%, iron 0.2wt%, copper 0.05wt%, manganese 0.05wt%, zinc 0.02wt%, remaining ingredient are aluminium, with company after melting
Continuous casting and roll process prepares skin material Casting Rolled Sheet；
2, prepared by core material: core material Casting Rolled Sheet is cold-rolled to 4.0mm, outer ring welding, the urgent steel band of plate face, in high-temperature annealing furnace
In anneal, 550 DEG C of heat preservation 26h of target heating temperature are warming up in 3h, turns 530 DEG C of heat preservation 5h of temperature, comes out of the stove later air-cooled,
Obtain core material blank；
3, prepared by skin material: skin material casting volume carries out blank heat treatment, the specific steps are as follows: Internal and external cycle welding, plate face are urgent
Steel band is annealed in high-temperature annealing furnace, and 530 DEG C of heat preservation 15h of target heating temperature are warming up in 3h, turns 500 DEG C of temperature guarantors
Warm 3h comes out of the stove air-cooled later；Skin material casting volume is cold-rolled to 0.5mm after blank is heat-treated, and carries out finishing by slitter later and cuts
Side, trimming is having a size of the standby core material width+30mm of institute；Straightening, which is crossed, after finishing processing corrects version type, clean the surface Residual oil；Straightening cleaning
It carries out being heat-treated for second afterwards, is warming up to 460 DEG C of heat preservation 9h of target heating temperature in 2h, turns 400 DEG C of heat preservation 3h of temperature, go out later
Furnace is air-cooled, obtains skin material blank；
4, cold rolling is compound: above-mentioned skin material blank and core material blank are obtained 2.1mm cold rolling through cold composite rolling mill Rolling compund
Composite plate；
5, diffusion annealing: by the urgent steel band of cold rolling composite plate plate face, it is diffused annealing in the lehr, is warming up in 3h
520 DEG C of heat preservation 8h of target heating temperature turn 430 DEG C of heat preservation 2h of temperature；
6, finishing trimming is carried out by slitter after roughing mill rolls 0.6mm after composite plate diffusion；It is cold-rolled to later
0.18mm, aluminium roll up the good high temperature gummed tape fixation surface of surface mount, later by aluminium be provided in annealing furnace carry out at
It is made annealing treatment before product, the specific process is as follows: 1h is warming up to 250 DEG C of heat preservation 5h, turns 460 DEG C of heat preservation 8h of temperature, turn 330 DEG C of guarantors of temperature later
Warm 2h；Finish rolling cuts cutting to the width needed through thin to 0.08mm after making annealing treatment before finished product.
Finished product sample is taken, its mechanical property such as the following table 1 is detected:
The mechanical property of finished product made from 1 embodiment 1 of table
The clad ratio of products obtained therefrom such as the following table 2:
Coating product rate made from 2 embodiment 1 of table
| Print position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Survey clad ratio % | 10.1 | 9.8 | 10 | 9.5 | 10.2 | 10.3 | 10.5 | 9.9 |
Remarks: target clad ratio is 10 ± 2%, and institute's coupongs position is that product transverse direction plate face equidistantly samples, from above
Data can be found that the compound clad ratio deviation of cold rolling 1.0, it is relatively stable.
Finished product sample is taken, after first carrying out simulation Braze tests (technique: 600 DEG C/10min), requires, is stretched according to sample preparation
Test detects finished material postwelding mechanical property, testing result such as the following table 3:
Finished product made from 3 embodiment 1 of table simulates postwelding mechanical property
For fin through simulating post-brazing tensile strength > 130Mpa, high temperature brazing rear support intensity is good.
Finished product sample is taken, sample preparation is required according to sample preparation, then carries out the test of sag resistance value, finally carry out data comparison, detect
Finished material sink-resistance performance.
A, method of preparing sample:
In the plane of print rolling direction (RD) and transverse direction (TD), taking length along rolling direction is 100mm, along cross
Taking length to direction is 22mm, i.e. plaques specification is 100mmx22mmx0.08mm, and experimental provision is shown in attached drawing 1, crossbeam length
It is highly 105mm for 250mm, width 50mm, the position height for folding up style is 80.71mm.Sample number into spectrum is 01~05#.
B, test technology:
The device (see attached drawing 1) is placed in Muffle furnace, according to temperature increasing schedule below raising temperature: 20 DEG C of room temperature →
400 DEG C/30min+400 DEG C 5min+400 DEG C of heat preservation → 600 DEG C/22min+600 DEG C of heat preservation 10min, at 600 DEG C of final heat
After reason, print is taken out at once.
C, test result such as table 4:
Finished product sink-resistance performance made from 4 embodiment 1 of table
Embodiment 2
1, alloy proportion: silicon 0.95wt%, iron 0.68wt%, copper 0.15wt%, manganese 1.7wt%, magnesium 0.08wt%, zinc is pressed
1.8wt%, zirconium 0.18wt%, remaining ingredient are aluminium, prepare core material Casting Rolled Sheet with continuous casting and rolling method after melting；By alloy proportion:
Silicon 8.1wt%, iron 0.8wt%, copper 0.2wt%, manganese 0.1wt%, zinc 0.2wt%, remaining ingredient are aluminium, with continuous casting after melting
Roll legal system preserved skin material Casting Rolled Sheet；
2, prepared by core material: core material Casting Rolled Sheet is cold-rolled to 5.0mm, outer ring welding, the urgent steel band of plate face, in high-temperature annealing furnace
It anneals, 580 DEG C of heat preservation 22h of target heating temperature is warming up in 3h, turn 550 DEG C of heat preservation 3h of temperature, come out of the stove air-cooled, obtain later
To core material blank；
3, prepared by skin material: skin material casting volume carries out blank heat treatment, the specific steps are as follows: casting volume Internal and external cycle is welded,
The urgent steel band of plate face, anneals in high-temperature annealing furnace, and 500 DEG C of heat preservation 18h of target heating temperature are warming up in 3h, turn temperature
480 DEG C of heat preservation 6h, come out of the stove air-cooled later；Skin material casting volume is cold-rolled to skin material 0.62mm after blank is heat-treated, later by slitting
Machine carries out finishing trimming, and trimming is having a size of the standby core material width+70mm of institute；Straightening, which is crossed, after finishing processing corrects version type, clean the surface
Residual oil；Second is carried out after straightening cleaning to be heat-treated, and is warming up to 430 DEG C of heat preservation 12h of target heating temperature in 2h, is turned temperature 360
DEG C heat preservation 5h, come out of the stove later air-cooled, obtain skin material blank；
4, cold rolling is compound: above-mentioned skin material blank and core material blank are obtained 2.5mm cold rolling through cold composite rolling mill Rolling compund
Composite plate；
5, diffusion annealing: by the urgent steel band of cold rolling composite plate plate face, it is diffused annealing in the lehr, is warming up in 3h
500 DEG C of heat preservation 10h of target heating temperature turn 400 DEG C of heat preservation 5h of temperature；
6, roll 0.65mm through roughing mill after composite plate diffusion annealing, after by slitter carry out finishing trimming；It is rolled to later
0.22mm, aluminium roll up the good high temperature gummed tape fixation surface of surface mount, are heat-treated before carrying out finished product later, specific annealing process is as follows:
1h is warming up to 260 DEG C of heat preservation 5h, turns 430 DEG C of heat preservation 11h of temperature, turns 360 DEG C of heat preservation 2h of temperature later；Finish rolling is to 0.13mm after heat treatment
Cutting is cut to the width needed through thin.
Finished product sample is taken, its mechanical property such as the following table 5 is detected:
Finished product mechanical property made from 5 embodiment 2 of table
The clad ratio of products obtained therefrom such as the following table 6:
The clad ratio of product made from 6 embodiment 2 of table
| Print position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Survey clad ratio % | 9.9 | 10.1 | 9.6 | 10.6 | 10.8 | 9.7 | 10.5 | 9.3 |
Remarks: target clad ratio is 10 ± 2%, and institute's coupongs position is that product transverse direction plate face equidistantly samples, from above
Data can be found that the compound clad ratio deviation of cold rolling 1.3, it is relatively stable, hence it is evident that be better than method hot rolling.
Finished product sample is taken, after first carrying out simulation Braze tests (technique: 600 DEG C/10min), requires, is stretched according to sample preparation
Test detects finished material postwelding mechanical property, testing result such as the following table 7:
Finished product postwelding mechanical property made from 7 embodiment 2 of table
For fin through simulating post-brazing tensile strength > 130Mpa, high temperature brazing rear support intensity is good.
Finished product sample is taken, sample preparation is required according to sample preparation, then carries out the test of sag resistance value, finally carry out data comparison, detect
Finished material sink-resistance performance.
A, method of preparing sample:
In the plane of print rolling direction (RD) and transverse direction (TD), taking length along rolling direction is 100mm, along cross
Taking length to direction is 22mm, i.e. plaques specification is 100mmx22mmx0.08mm, and experimental provision is shown in attached drawing 1, crossbeam length
It is highly 105mm for 250mm, width 50mm, the position height for folding up style is 80.71mm.Sample number into spectrum is 01~05#.
B, test technology:
The device (see attached drawing 1) is placed in Muffle furnace, according to temperature increasing schedule below raising temperature: 20 DEG C of room temperature →
400 DEG C/30min+400 DEG C 5min+400 DEG C of heat preservation → 600 DEG C/22min+600 DEG C of heat preservation 10min, at 600 DEG C of final heat
After reason, print is taken out at once.
C, test result such as table 8:
Finished product sink-resistance performance made from 8 embodiment 2 of table
| Experiment numbers | Height/mm before print simulation is brazed | Height/mm after print simulation soldering | Sagging value/mm |
| 1# | 97.08 | 84.06 | 13.02 |
| 2# | 96.73 | 83.52 | 13.21 |
| 3# | 96.68 | 84.36 | 12.32 |
| 4# | 97.74 | 83.69 | 13.05 |
| 5# | 96.58 | 83.5 | 13.08 |
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (6)
1. one kind is for producing car radiation composite fin aluminum foil material, it is characterised in that: described for producing car radiation
Composite fin aluminum foil material includes core material and two layers of skin material, and two layers of skin material is compounded in the upper and lower table of the core material respectively
Face；
The core material chemical constituent are as follows: 0.6 ~ 1.0wt% of silicon, iron 0 ~ 0.7wt %, 0 ~ 0.2 wt % of copper, 1.0 ~ 1.8 wt % of manganese,
0 ~ 0.1 wt % of magnesium, 1.0 ~ 2.0 wt % of zinc, 0 ~ 0.2 wt % of zirconium, not can remove impurity content individually is 0 ~ 0.05 wt %, institute
Have and not can remove content of impurities as 0 ~ 0.15 wt %, remaining ingredient is aluminium；
The skin material chemical constituent are as follows: 6.8 ~ 8.2wt% of silicon, iron 0 ~ 0.8 wt %, copper 0 ~ 0.25wt %, 0 ~ 0.1 wt % of manganese, zinc
0 ~ 0.2 wt %, not can remove impurity content individually is 0 ~ 0.05 wt %, and all content of impurities that not can remove are 0 ~ 0.15
Wt %, remaining ingredient are aluminium；
Blank is made by continuous casting and rolling by core material, skin material alloy in the car radiation composite fin aluminum foil material, then by cold
The method of rolling is combined.
2. as described in claim 1 for producing car radiation composite fin aluminum foil material, it is characterised in that core material, Pi Cai
Alloy passes through continuous casting and rolling respectively and core material blank, skin material blank is made, by cold-rolling practice complex cutification material-core material-skin material structure,
Skin material-core material-skin material structure is car radiation composite fin aluminum foil material.
3. a kind of preparation method of any of claims 1 or 2 for car radiation compound aluminium foil material, it is characterised in that packet
Include following steps:
(1) aluminium alloy smelting: skin material and core material distinguish chemical constituent described in accordance with the claim 1 and carry out melting, obtain melting
Skin material aluminium alloy, core material aluminium alloy afterwards；
(2) continuous casting and rolling: being skin material Casting Rolled Sheet, core material by skin material aluminium alloy, the core material aluminium alloy difference continuous casting and rolling after melting
Casting Rolled Sheet；
(3) prepared by core material；
(4) prepared by skin material；
(5) cold rolling is compound: the core material blank and skin material blank obtained by step (3), step (4) is rolled through cold composite rolling mill, is adopted
It rolls compound with the processing of suitable working modulus, obtains 1.7-2.8mm cold rolling composite plate；
(6) diffusion annealing: the cold rolling composite plate obtained to step (5), the urgent steel band of plate face are diffused move back in the lehr
Fire is warming up to 490-520 DEG C of heat preservation 6-12h of target heating temperature in 2-4h, turns 360-430 DEG C of heat preservation 2-5h of temperature, expanded
Dissipate cold rolling composite plate after annealing；
(7) after the diffusion annealing for obtaining step (6) cold rolling composite plate cold rolling with a thickness of 0.5mm ~ 0.75mm composite plate,
Finishing trimming is carried out by slitter afterwards, the aluminium volume after obtaining finishing trimming；
(8) the aluminium volume after the finishing trimming obtained to step (7) carries out cold rolling, is rolled into the aluminium volume with a thickness of 0.16-0.25mm,
It is made annealing treatment before carrying out finished product again, when annealing posts high temperature gummed tape to fix aluminium volume surface, the specific step made annealing treatment before finished product
Suddenly are as follows: 1-2h is warming up to 240-280 DEG C of heat preservation 2-5h, turns 430-460 DEG C of heat preservation 6-12h of temperature, turns warm 320-360 DEG C of heat preservation later
2h；
(9) finish rolling carried out to obtained aluminium foil after making annealing treatment before step (8) finished product, mill product, make finished product aluminium foil with a thickness of
0.07-0.15mm；
(10) cutting packaging.
4. preparation method as claimed in claim 3, which is characterized in that the detailed process of step (10) are as follows: the finished product that will be obtained
The width for cutting needs obtains qualified product, is then packed and stored.
5. preparation method as claimed in claim 3, which is characterized in that step (3) detailed process are as follows: continuously cast with step (2)
Thickness is obtained in the plate of 3.6-5.0mm after rolling core material Casting Rolled Sheet cold rolling made from method, outer ring is welded, the urgent steel band of plate face,
It anneals in annealing furnace, comes out of the stove later air-cooled, obtain core material blank；Specific annealing conditions are as follows: target is warming up in 3-5h
Turn 500-550 DEG C of heat preservation 2-5h of temperature after 550-580 DEG C of heat preservation 18-27h of heating temperature.
6. preparation method as claimed in claim 3, which is characterized in that step (4) detailed process are as follows: continuously cast with step (2)
It rolls skin material Casting Rolled Sheet made from method and carries out blank heat treatment, specific step is as follows for blank heat treatment: Internal and external cycle welding, plate face are urgent
Steel band is annealed in the lehr, annealing conditions are as follows: 500-540 DEG C of heat preservation 10- of target heating temperature is warming up in 2-4h
18h turns 480-520 DEG C of heat preservation 2-6h of temperature later, comes out of the stove later air-cooled；The casting of the skin material made from step (2) continuous casting and rolling method
It rolls after plate carries out blank heat treatment above-mentioned and carries out being cold-rolled to skin material Casting Rolled Sheet with a thickness of 0.42-0.67mm, later for the first time again
Finishing trimming is carried out by slitter, skin material trimming width is standby+20 ~ 70mm of core material width of institute；Straightening correction is crossed after finishing processing
Version type, clean the surface Residual oil；It carries out second after straightening cleaning to be heat-treated, the specific steps are as follows: the urgent steel band of plate face is being annealed
It anneals in furnace, 430-470 DEG C of heat preservation 6-12h of target heating temperature is warming up in 2-4h, turn 360-410 DEG C of heat preservation 2- of temperature
5h comes out of the stove air-cooled later, obtains skin material blank.
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