CN105880866A - Heat-resistant aluminum alloy soldering composite material and preparation method thereof - Google Patents
Heat-resistant aluminum alloy soldering composite material and preparation method thereof Download PDFInfo
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- CN105880866A CN105880866A CN201510031307.2A CN201510031307A CN105880866A CN 105880866 A CN105880866 A CN 105880866A CN 201510031307 A CN201510031307 A CN 201510031307A CN 105880866 A CN105880866 A CN 105880866A
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Abstract
The invention discloses a heat-resistant aluminum alloy soldering composite material. The heat-resistant aluminum alloy soldering composite material comprises a core and skin, wherein the core is covered with the skin. The core is 3003 aluminum alloy. The skin is 4343 or 4045 or 4104 or 4004 aluminum alloy. Meanwhile, the invention discloses a preparation method of the heat-resistant aluminum alloy soldering composite material. Compared with an ordinary aluminum alloy soldering composite material, the heat-resistant aluminum alloy soldering composite material prepared through the method is optimized and improved on the aspect of the mechanical property, the formability of ultra-thin composite materials is improved, and the collapse resistance is improved.
Description
Technical field
The present invention relates to a kind of aluminium alloy brazing composite and preparation method thereof, particularly to a kind of heat-resisting 3003 aluminium alloy brazings
Composite and preparation method thereof.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structural material in industry, Aeronautics and Astronautics, automobile, machine-building,
Boats and ships and chemical industry are widely applied, is on the basis of fine aluminium, to add different metal melting form, thus different aluminum closes
Gold utensil has different physical properties, nowadays the developing rapidly of industrial economy, increasing to the demand of Welded structural member,
The Research on Weldability enabled aluminum alloy to is the most deeply.
Pi Cai: also known as clad, depends on core one side or bilateral and exists, and less relative to core accounting, fusing point compares core
Low, as solder during soldering.
Core: also known as matrix, basic unit, depends on core one side or bilateral and exists, less relative to core accounting, fusing point ratio
Skin material is high, primarily serves strength supporting role in brazing process, and after soldering completes, skin material welds as solder, the exposed work of core
Use for structure member.
Composite ingot: composite ingot is the intermediate product in brazing sheet production process, is fixed together skin material slab with core plate ingot,
Forming composite ingot, composite ingot is heated, hot rolling forms soldering coiled material.
Car heat exchanger is mainly assembled by method for brazing by fluid line and radiating fin, fluid line and radiating fin
Being to be become aluminium sheet and aluminium foil by three layer of 4343/3003/4343 aluminum alloy plate materials composite rolling respectively, wherein core 3003 is allusion quotation
The Al-Mn system alloy of type, plays a supportive role, and is the material of main part of Soldering foil；Skin material 4343 is that typical Al-Si system closes
Gold, plays solder effect as brazing layer when soldering.Under the background that Current resource and energy crisis are increasingly sharpened, the light weight of automobile
Change its heat exchanger of urgent needs (radiator, charge air cooler, condenser, vaporizer etc.) aluminum composite panel belt foil loss of weight to become
Thin.
The solidus temperature of 4343 aluminium alloys is 577 DEG C, and liquidus temperature is 615 DEG C, therefore the soldering temperature of industrial heat exchanger
Degree is for 600-620 DEG C.Exactly because brazing temperature is more lower slightly than the solidus temperature 643 DEG C of core 3003, so, when dissipating
The clad aluminum foil the thinnest (less than 0.08-0.1mm) of the fins such as hot device and condenser, core 3003 base material seriously softens；And
And the Si in high temperature hypodermis material 4343 acutely permeates to core, grain boundary diffusion forms α (Al)+Si eutectic, further core
The solidus temperature of material and intensity, ultimately cause postwelding workpiece buckling deformation, heat-radiation belt corrode, blow, collapse and metal accumulation
Etc. defect, have a strong impact on yield rate and economic benefit.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of heat-resisting 3003 aluminium alloy brazing composites and preparation method thereof,
To reach to improve the purpose of the indexs such as the intensity of Al alloy composite of postwelding, elongation percentage, resist collapse performance.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of heat-resisting aluminium alloy soldering composite, including core and the skin material being coated on outside described core, described core is 3003
Aluminium alloy, described 3003 aluminium alloys include the following composition of percentage: the Si of 0.65-0.85%, 0.35-0.45%
The Zr of Mg, 0.03-0.2% of Mn, 0.01-0.05% of Cu, 1.5-2.0% of Fe, 0.1-0.2%, 0.01-0.05%'s
The Ti of the Zn of Cr, 0.01-0.15%, 0.015-0.025%, surplus is Al and inevitable impurity；
Described skin material is 4 line aluminium alloys, and described 4 line aluminium alloys include the following composition of percentage: 7.2-10.7%
The Mg, 0.03-0.2% of Mn, 0.01-0.05% of Cu, 0.01-0.05% of Fe, 0.01-0.05% of Si, 0.1-0.65%
The Ti of Zn, 0.015-0.025% of Cr, 0.01-0.1% of Zr, 0.01-0.05%, surplus is Al and the most miscellaneous
Matter.
By adjusting the content of various metallic elements in core and skin material, can substantially solve the processability of ultra-thin composite and resist
Subsiding performance, the intensity of postwelding increases considerably.
Preferably, described 4 line aluminium alloys are 4343,4045,4104 or 4004 aluminium alloys, during composite brazing, make
For clad alloy, there is preferable mobility, wettability, clearance filling capability, molten moist and strength of joint.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite, comprises the steps:
1) 3003 aluminium alloys are carried out ingot casting, saw milling, obtains core；
2) 4 line aluminium alloys carry out ingot casting, saw milling, and heating, hot rolling, sawing obtain skin material；
3) skin material and core are fastened, carry out seamless welding, after welding, head, in, afterbody beat steel band and fix, obtain composite ingot；
4) composite ingot shove charge is heated to 380～400 DEG C, is incubated 2h, post-heating to 510 DEG C insulation 7h；
5) composite ingot after heating carries out hot rolling, and start rolling temperature is 490 DEG C, and finishing temperature is more than 300 DEG C；
6) it is rolled down to during 60mm thickness obtain heat-resisting aluminium alloy soldering composite.
Further in technical scheme, described step 1) in 3003 aluminium alloys be the aluminium ingot by weight fraction 30-35% and weight is divided
The aluminum liquid dispensing that concentration is 99.7% of number 65-70% forms.
Preferably, described step 1) in batch temperature be 740 ± 5 DEG C, ingot casting temperature is 690～700 DEG C.
Further in technical scheme, described step 2) in 4 line aluminium alloys be the aluminium ingot by weight fraction 30-35% and weight is divided
The aluminum liquid dispensing that concentration is 99.7% of number 65-70% forms.
Further in technical scheme, described step 2) in batch temperature be 740 ± 5 DEG C, ingot casting temperature is 670～680 DEG C,
Heating-up temperature is 500 DEG C, heats 16h.
Further in technical scheme, described step 3) in skin material 60mm less than core width, the short 100mm of length.
By technique scheme, the heat-resisting 3003 aluminium alloy brazing composites relatively common aluminum alloy soldering that the present invention provides is combined
Material is optimized in mechanical property and is improved, and improves the processability of ultra-thin composite, improves resist collapse performance.
The finished product seam that this preparation method prepares is good, does not has burn into emulsion trace, crackle, bubble, slag inclusion, viscous aluminum, wipes scuffing etc.
Defect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or prior art
In description, the required accompanying drawing used is briefly described.
Fig. 1 is the schematic cross-section of the heat-resisting 3003 aluminium alloy brazing composites disclosed in the embodiment of the present invention 1,2；
Fig. 2 is the schematic cross-section of the heat-resisting 3003 aluminium alloy brazing composites disclosed in the embodiment of the present invention 3,4.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State.
The invention provides a kind of heat-resisting 3003 aluminium alloy brazing composites and preparation method thereof, specific embodiment is as follows:
Embodiment 1:
Core:
3003 aluminium alloys, including the following composition of percentage: the Si of 0.70%, the Fe of 0.4%, the Cu of 0.2%, 1.5%
Mn, the Mg of 0.02%, the Zr of 0.1%, the Cr of 0.02%, the Zn of 0.12%, the Ti of 0.02%, surplus is Al and can not keep away
The impurity exempted from.
Pi Cai:
4343 aluminium alloys, including the following composition of percentage: the Si of 8.7%, the Fe of 0.2%, the Cu of 0.03%, 0.04%
Mn, the Mg of 0.02%, the Zr of 0.08%, the Cr of 0.02%, the Zn of 0.08%, the Ti of 0.025%, surplus is Al and can not
The impurity avoided.
Concrete preparation method is as follows:
1) by 3003 aluminium ingots of weight fraction 30-35% and the aluminum liquid that concentration is 99.7% of weight fraction 65-70% at 740 DEG C
Dispensing, puts into and leads in stove, puts into high-efficiency refining agent, carries out ingot casting at 680 DEG C, after completing, cuts saw end to end, it is ensured that plate ingot
Straight tumor without casting aliquation, thickness difference head, in, tail control within 0.5mm with plate difference, every facing cut 10mm, obtain core；
2) by 4343 aluminium ingots and the aluminum liquid dispensing that concentration is 99.7% of weight fraction 65-70% of weight fraction 30-35%,
Dispensing at 740 DEG C, puts into and leads in stove, puts into high-efficiency refining agent, carries out ingot casting at 680 DEG C, after completing, cuts saw end to end, protects
Card the straight tumor without casting aliquation of plate ingot, thickness difference head, in, tail control within 0.5mm with plate difference, every facing cut 10mm, heat
Being 500 DEG C to temperature, heat 16h, sawing obtains skin material；
3) skin material with special steel brush uniformly, conscientiously polishing (polishing of skin material surface scale is clean, thoroughly, surface is granular sensation),
Clean out (cleaning Water Oil Or Gas by removing surface scrub), do not allow to there are greasy dirt, foul, ash, soft flocks etc..
Skin material 60mm less than core width, the short 100mm of length.As it is shown in figure 1, core 1 is placed in centre, each one layer of skin material in two sides
2, fastened, carried out seamless welding, during soldering, required vertical position welding, angle of welding gun controls, at about 75 °, to prevent welding slag from entering
Skin material and core gap.Fusion length 1m, weld gap length 20cm, damaged by surface gouge after seam and black stains in the surface etc. lacks
Sunken polishing is cleaned out.After welding, head, in, afterbody beat steel band and fix, obtain composite ingot；
4) by composite ingot shove charge, composite ingot trapezoidal faces is placed on heating cushion, is heated to 380～400 DEG C, is incubated 2h, post-heating
To 510 DEG C of insulation 7h；
5) composite ingot after heating carries out hot rolling, and before open rolling, emulsion remains systemic circulation, electrical conductivity≤600us, concentration:
3.4%, PH=7.8～about 8.2, viscosity: 10～15, temperature: 55 ± 5 DEG C, TE value: 8～10.Start rolling temperature is 490 DEG C,
Finishing temperature is more than 300 DEG C；Gloss level of roll: 0.28-0.3.
Rinsing after roll surface 30S by emulsion before hot rolling, strap cut by material after coming out of the stove, close emulsion feeding again after 2 minutes, expect into
Entering middle compression, middle open rolling 3-5 passage, 2 passages are rolled in left and right, and reduction in pass controls at 2-3mm, can be according to rolling feelings
Condition is amplified in right amount, to be welded and after spray emulsion again and roll rapidly, rolling pass absolute draft amount is with stable rolling equipment level maximum
Preferably, rolling 60mm thickness time cut stub bar material tail, roll qualified after batch.When during rolling, tension force controls to be slightly less than 3003 rolling
Tension force control.
Neat turriform≤the 5mm of Combined roll end face, staggered floor≤1.5mm.
Embodiment 2:
Core:
3003 aluminium alloys, including the following composition of percentage: the Si of 0.75%, the Fe of 0.45%, the Cu of 0.1%,
The Mn of 1.5%, the Mg of 0.02%, the Zr of 0.1%, the Cr of 0.02%, the Zn of 0.12%, the Ti of 0.02%, surplus is Al and not
Evitable impurity.
Pi Cai:
4045 aluminium alloys, including the following composition of percentage: the Si of 10.2%, the Fe of 0.3%, the Cu of 0.02%,
The Mn of 0.04%, the Mg of 0.02%, the Zr of 0.08%, the Cr of 0.02%, the Zn of 0.08%, the Ti of 0.025%, surplus be Al and
Inevitably impurity.
Preparation method is with embodiment 1.
Embodiment 3:
Core, skin material composition are with embodiment 1.
During preparation, as in figure 2 it is shown, by each to core 1 and skin material 2 one layer, fasten, welding, the same embodiment of remaining method
1。
Embodiment 4:
Core, skin material composition are with embodiment 2.
During preparation, as in figure 2 it is shown, by each to core 1 and skin material 2 one layer, fasten, welding, the same embodiment of remaining method
1。
It should be noted that skin material, core surfaces prescription are as follows:
The tool marks degree of depth≤0.2mm, complete any surface finish of milling is totally not allow for slag inclusion, bubble, crackle, foul, corrosion etc. and exists.
Skin material hot rolling rear surface bright and clean smooth be not allow for bubble, slag inclusion, wiping scuffing, emulsion trace exist；Be not allow for crackle,
Corrosion exists, and template is smooth, is not allow for obvious wave and exists, sawing rear end face impulse-free robustness.
Composite properties test result such as table 1 below after preparation.
Table 1 performance indications
As can be seen from the above table, the various performance indications of heat-resisting 3003 matrix composite materials be superior to standard 3003 base material be combined
Material, improves the processability of ultra-thin composite, improves resist collapse performance.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.To these
The multiple amendment of embodiment will be apparent from for those skilled in the art, generic principles defined herein
Can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not be by
It is limited to the embodiments shown herein, and is to fit to consistent with principles disclosed herein and features of novelty the widest
Scope.
Claims (8)
1. a heat-resisting aluminium alloy soldering composite, including core and the skin material being coated on outside described core, it is characterised in that
Described core is 3003 aluminium alloys, and described 3003 aluminium alloys include the following composition of percentage: 0.65-0.85%'s
The Zr of the Mg of the Mn of the Cu of the Fe of Si, 0.35-0.45%, 0.1-0.2%, 1.5-2.0%, 0.01-0.05%, 0.03-0.2%,
The Ti of the Zn of the Cr of 0.01-0.05%, 0.01-0.15%, 0.015-0.025%, surplus is Al and inevitable impurity；
Described skin material is 4 line aluminium alloys, and described 4 line aluminium alloys include the following composition of percentage: 7.2-10.7%
The Mg, 0.03-0.2% of Mn, 0.01-0.05% of Cu, 0.01-0.05% of Fe, 0.01-0.05% of Si, 0.1-0.65%
The Ti of Zn, 0.015-0.025% of Cr, 0.01-0.1% of Zr, 0.01-0.05%, surplus is Al and the most miscellaneous
Matter.
Heat-resisting aluminium alloy soldering composite the most according to claim 1, it is characterised in that described 4 line aluminium alloys are
4343,4045,4104 or 4004 aluminium alloy.
3. the preparation method of a heat-resisting aluminium alloy soldering composite as claimed in claim 1, it is characterised in that include as
Lower step:
1) 3003 aluminium alloys are carried out ingot casting, saw milling, obtains core；
2) 4 line aluminium alloys carry out ingot casting, saw milling, and heating, hot rolling, sawing obtain skin material；
3) skin material and core are fastened, carry out seamless welding, after welding, head, in, afterbody beat steel band and fix, obtain composite ingot；
4) composite ingot shove charge is heated to 380～400 DEG C, is incubated 2h, post-heating to 510 DEG C insulation 7h；
5) composite ingot after heating carries out hot rolling, and start rolling temperature is 490 DEG C, and finishing temperature is more than 300 DEG C；
6) it is rolled down to during 60mm thickness obtain heat-resisting aluminium alloy soldering composite.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite the most according to claim 3, it is characterised in that described
Step 1) in 3003 aluminium alloys be the aluminum liquid that concentration is 99.7% of the aluminium ingot by weight fraction 30-35% and weight fraction 65-70%
Dispensing forms.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite the most according to claim 4, it is characterised in that described
Step 1) in batch temperature be 740 ± 5 DEG C, ingot casting temperature is 690～700 DEG C.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite the most according to claim 3, it is characterised in that described
Step 2) in 4 line aluminium alloys be the aluminum liquid that concentration is 99.7% of the aluminium ingot by weight fraction 30-35% and weight fraction 65-70%
Dispensing forms.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite the most according to claim 6, it is characterised in that described
Step 2) in batch temperature be 740 ± 5 DEG C, ingot casting temperature is 670～680 DEG C, and heating-up temperature is 500 DEG C, heat 16h.
The preparation method of a kind of heat-resisting aluminium alloy soldering composite the most according to claim 3, it is characterised in that described
Step 3) in skin material 60mm less than core width, the short 100mm of length.
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| CN106514033A (en) * | 2016-11-09 | 2017-03-22 | 银邦金属复合材料股份有限公司 | Aluminum alloy, heat exchanger, aluminum alloy composite and preparation method of aluminum alloy composite |
| CN106735660A (en) * | 2016-12-14 | 2017-05-31 | 无锡银邦防务科技有限公司 | A kind of soldering cellular board panel high strength alumin ium alloy composite plate, core, clad and skin material |
| CN108724890A (en) * | 2018-04-25 | 2018-11-02 | 东北轻合金有限责任公司 | A kind of production method of the aluminium alloy compound plate and strip blank of middle layer alloy side low-angle milling |
| CN111809084A (en) * | 2020-07-09 | 2020-10-23 | 大力神铝业股份有限公司 | High-strength high-ductility composite board material and processing technology thereof |
| CN112025215A (en) * | 2020-08-17 | 2020-12-04 | 奥科宁克（昆山）铝业有限公司 | Production process of three-layer composite aluminum plate for cooker |
| JP2021505404A (en) * | 2017-12-12 | 2021-02-18 | コンステリウム ヌフ−ブリザックＣｏｎｓｔｅｌｌｉｕｍ Ｎｅｕｆ−Ｂｒｉｓａｃｈ | Flux-free brazing aluminum multi-layer brazing sheet |
| CN114485245A (en) * | 2021-12-24 | 2022-05-13 | 山东翔宇航空技术服务有限责任公司 | Plate-fin type efficient heat exchanger core body of aircraft air conditioning system |
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| CN106514033A (en) * | 2016-11-09 | 2017-03-22 | 银邦金属复合材料股份有限公司 | Aluminum alloy, heat exchanger, aluminum alloy composite and preparation method of aluminum alloy composite |
| CN106735660A (en) * | 2016-12-14 | 2017-05-31 | 无锡银邦防务科技有限公司 | A kind of soldering cellular board panel high strength alumin ium alloy composite plate, core, clad and skin material |
| JP2021505404A (en) * | 2017-12-12 | 2021-02-18 | コンステリウム ヌフ−ブリザックＣｏｎｓｔｅｌｌｉｕｍ Ｎｅｕｆ−Ｂｒｉｓａｃｈ | Flux-free brazing aluminum multi-layer brazing sheet |
| JP7366022B2 (en) | 2017-12-12 | 2023-10-20 | コンステリウム ヌフ－ブリザック | Aluminum multilayer brazing sheet for flux free brazing |
| CN108724890A (en) * | 2018-04-25 | 2018-11-02 | 东北轻合金有限责任公司 | A kind of production method of the aluminium alloy compound plate and strip blank of middle layer alloy side low-angle milling |
| CN111809084A (en) * | 2020-07-09 | 2020-10-23 | 大力神铝业股份有限公司 | High-strength high-ductility composite board material and processing technology thereof |
| CN112025215A (en) * | 2020-08-17 | 2020-12-04 | 奥科宁克（昆山）铝业有限公司 | Production process of three-layer composite aluminum plate for cooker |
| CN112025215B (en) * | 2020-08-17 | 2022-04-05 | 奥科宁克（昆山）铝业有限公司 | Production process of three-layer composite aluminum plate for cooker |
| CN114485245A (en) * | 2021-12-24 | 2022-05-13 | 山东翔宇航空技术服务有限责任公司 | Plate-fin type efficient heat exchanger core body of aircraft air conditioning system |
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