CN105886843A - Aluminum alloy brazing fin material 3003A and preparation method thereof - Google Patents
Aluminum alloy brazing fin material 3003A and preparation method thereof Download PDFInfo
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- CN105886843A CN105886843A CN201510031332.0A CN201510031332A CN105886843A CN 105886843 A CN105886843 A CN 105886843A CN 201510031332 A CN201510031332 A CN 201510031332A CN 105886843 A CN105886843 A CN 105886843A
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Abstract
The invention discloses an aluminum alloy brazing fin material 3003A. The 3003A is composed of, by mass, 0.5%-0.55% of Fe, 0.1%-0.15% of Si, 1.2%-1.25% of Mn, 0.05%-0.1% of Cu, 0.1% of Zn, 0.15% of inevitable impurities and the balance Al. The invention further discloses a preparation method of the aluminum alloy brazing fin material 3003A. A medium-temperature and intermediate-speed method is adopted, the quality is ensured, and the moderate cost is also ensured.
Description
Technical field
The present invention relates to aluminum alloy materials processing technique field, particularly to a kind of aluminium alloy brazing fin material 3003A and preparation thereof
Method.
Background technology
General Al-alloy heat exchanger is made up of parts such as fin, mainboard and heat dissipation pipes, along with going deep into of energy-saving and emission-reduction,
Asking heat exchanger component weight increasingly lighter, accordingly, the material manufacturing parts needs more and more thinner.And the thinning of material can
Bring the intensity of the decline of corresponding stress-bearing capability, especially surface at high temperature fin material, if intensity is not enough, then can cause
The generation of defect such as shrink, subside, and then affect the manufacture of heat exchanger.Pass through technical Analysis simultaneously, it is however generally that, cause
What fin contraction was subsided main reason is that aluminum alloy fin material recrystallization crystal particle dimension before brazing temperature is the least, thus exists
A large amount of crystal boundaries, thus on the one hand result in aluminum alloy fin material at high temperature intensity and decline, on the other hand result in aluminium alloy material
Material fin element silicon in solder when soldering, in a large number inside grain boundary decision to fin, thus causes corrosion.
It addition, in actual application, also can be due to wind-force, car cleaning current etc. apply external force on fin.Therefore,
It must be made to keep certain intensity, even if eroding to certain degree, being also unlikely and making fin rupture.So, fin material
There is higher intensity, particularly when fin is thinning, it is ensured that fin remains to have the highest intensity.
The processing technique of existing aluminum alloy fin material, including three kinds of methods: 1, low temperature is quick, 2, middle warming middle-JIAO speed, 3, high
Temperature is at a slow speed.First method cast temperature is low, and speed of production is fast accordingly, low cost；Second method cast temperature is moderate, raw
Product speed is moderate, i.e. ensures that quality ensures again moderate cost；The third method cast temperature is high, and speed of production is low, the most accordingly
Alloy adapts to produce.A kind of suitably processing method have to be found not only to ensure quality but also reduce cost.
Summary of the invention
For solving above-mentioned technical problem, the present invention takes the method for middle warming middle-JIAO speed, by adjusting chemical composition, controls processing technique,
To reach not only to ensure quality but also reduce the purpose of cost.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of aluminium alloy brazing fin material 3003A, it is as follows that the chemical composition of described 3003A presses mass fraction: the Fe of 0.5-0.55%,
The Cu of the Mn of the Si of 0.1-0.15%, 1.2-1.25%, 0.05-0.1%, the Zn of 0.1%, other inevitable impurity account for 0.15%,
Surplus is Al.
The preparation method of a kind of aluminium alloy brazing fin material 3003A, comprises the steps:
1) shove charge, by the shove charge in order of aluminium ingot, waste material and intermediate alloy, when producing sheet material, waste material ratio controls at 25-30%, raw
When producing aluminium foil, waste material ratio controls at 30-35%；
2) melting, when furnace charge softens and stays, is uniformly sprinkled into coverture, when furnace chargeization at ordinary times, then spread last layer, to cover comprehensively
Lid melt；When furnace charge major part fusing, it is stirred；After furnace charge all melts, skim in melting temperature range；
And sample analysis, carry out feed supplement if desired, make composition reach the requirement of 3003A；
3) leading stove prepurging, when leading stove, standing furnace fire box temperature must not be less than 800 DEG C；In standing furnace, melt temperature must not be less than
730℃；
4) lead furnace rear refine degasification again, skim, smelting furnace refine；
5) casting rolling, cuts volume, rolls up largest outside diameter and do not exceed 1600mm when cutting volume.
Based on above-mentioned preparation method, described step 1) in, add aluminum water after charging, stay the waste material of 5%, after waiting aluminum water all to add
Carry out secondary batching again.
Further, described step 2) in, total consumption of described coverture is 20-40kg.
Further, described step 2) in, probe temperature should be more than 730 DEG C, and feed supplement temperature should be more than 740 DEG C.
Preferably, described step 3) in, lead stokehold and carry out a spraying type refine in, refining temperature should more than 740 DEG C, by
Nitrogen sprays in stove as carrier, nitrogen pressure 0.1MPa.
Preferably, described step 4) in, the melt of refine should carry out the mensuration of air content, and air content should more than during 0.15/100g
Again refine.
Preferably, described step 4) in, refine grain size to be controlled, the method taking to add titanium silk online.
Further, described step 4) in, to filter after refine, use ceramic filter plate deep water dual pathways single filter,
Screen plate thickness is not less than 60mm.
By technique scheme, the aluminium alloy brazing fin material 3003A that the present invention provides is frivolous, and intensity, hardness meet the requirements,
And there is good heat-sinking capability, it is adaptable to the use of the parts such as automotive heat exchanger, condenser.Preparation method technique is controlled,
Reproducible, it is easy to grasp, there is good application prospect.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below.
The invention provides a kind of aluminium alloy brazing fin material 3003A and preparation method thereof, specific embodiment is as follows:
Embodiment 1:
It is as follows that the chemical composition of 3003A presses mass fraction: the Fe of 0.5%, the Si of 0.1%, the Mn of 1.25%, the Cu of 0.1%,
The Zn of 0.1%, other inevitable impurity account for 0.15%, and surplus is Al.
Preparation method is as follows:
1) shove charge
By the shove charge in order of aluminium ingot, waste material and intermediate alloy, when producing sheet material, waste material ratio controls at 25-30%, produces during aluminium foil useless
Material ratio controls at 30-35%；Add aluminum water after charging, stay the waste material of 5%, after waiting aluminum water all to add, carry out secondary batching again.
2) melting
When furnace charge softens and stays, be uniformly sprinkled into coverture, when furnace chargeization at ordinary times, then spread last layer, to cover melt comprehensively,
The total consumption of coverture is 20-40kg；
When furnace charge major part fusing, being stirred, every stove stirs four times.During stirring, rake should press close to furnace bottom, each corner
All should put in place, it is impossible to form wave；
After furnace charge all melts, skim in melting temperature range.When skimming, operation steadily to be wanted the nearest rear remote,
Scratch clean, and avoid taking metal out of as far as possible；
Sampling should be more than 730 DEG C, with clean sample spoon, in the centre of two fire doors of stove, drop width and the degree of depth
Dipping sample at portion, sample must not have pore, slag inclusion and crackle；
According to analysis result, by 3003A chemical composition standard-required adjusting component, carrying out feed supplement, feed supplement temperature should be at 740 DEG C
Above, composition reaches requirement；
Using spraying type refine, lead stokehold and carry out a refine in, refining temperature should be more than 740 DEG C.Refine divides fire door to carry out,
Every fire door 10-15 minute.During during refine, refining agent adds fining pot, nitrogen spray in stove as carrier, nitrogen pressure 0.1MPa,
Refine pipe should be in body of heater middle and lower part, it is ensured that liquid can not splash.Refine is skimmed complete half an hour, skims the most thorough.
3) stove prepurging is led
When load melting complete, composition is uniform, qualified through quickly analyzing, and can lead stove when temperature is suitable.Furnace bottom is uneven and has surplus material
Time be as the criterion, but when alloy turns group naturally stopping outflow, it is necessary to surplus material is clawed；
When leading stove, melt temperature is about 750 DEG C, leads stove exception by force；
Lead stokehold and check that standing furnace siliconit is the most intact, need the person of changing to change in time；
When leading stove, standing furnace fire box temperature must not be less than 800 DEG C, and in standing furnace, melt temperature must not be less than 730 DEG C；
Do not allow aluminum water splash when leading stove and form whirlpool, lead furnace rear application burnisher cleaning slag and other foul and clear up in time
Chute, head piece and flow tube.
4) lead furnace rear refine degasification again, skim, smelting furnace refine (aluminum water residence time was more than 4 hours)
Refine in standing furnace, should be carried out leading furnace rear in principle immediately, but lead furnace temperature on the low side time, can be at standing furnace power transmission liter
Carry out after temperature a period of time.Refine pipe should preheat respectively at two fire doors, is then put into furnace bottom and the most smoothly moves, it is impossible to
There is dead angle；
The melt of refine should carry out the mensuration of air content, and air content should refine again more than during 0.15/100g；
Out being introduced into online degasification tank after standing furnace is released, operation principle is nitrogen degasification, (nitrogen gas purity requirement 99.999%,
Oxygen content :≤10PPM, nitrogen operating pressure controls at 0.2MPa) quickly rotated nitrogen in the aluminum depth of water by graphite rotator
Break into tiny bubble and carry out degasification, slagging-off；
The control of grain size, takes to add titanium silk (Ti5B) such as table 1 online:
Table 1 titanium silk speed and width of plate slab
| Width of plate slab (mm/min) | 1060 | 1120 | 1260 | 1360 |
| Titanium silk speed (mm/min) | 20 | 22 | 24 | 26 |
Filter and use ceramic filter plate deep water dual pathways single filter, it is desirable to once filtering and use 40 mesh, secondary filter is made pottery with 50 mesh
Porcelain screen plate, screen plate thickness is not less than 60mm, it is ensured that filter effect.
5) casting rolling
A. operator enter post by the division of labor, start casting and rolling machine, make roll surface speed reach maximum.
B. open stream eye release baking scald before case, strive for the fewest hot front case of melt.
C., when current box melt temperature is more than 740 DEG C, casting and rolling machine feeds water.Current box liquid level exceeds normal level of liquid 20-30mm
Shi Fangke starts to run slag, adjusts front case liquid level when running slag, unsuitable too high, with leakproof aluminum.After race slag is normal, i.e. work as patch
The aluminium flake of attached lower roll uniformly, nozzle chamber without clogging time start reduction of speed, and case liquid level before adjusting at any time, when speed is down to about
Start riser during 1000-1200mm/min, be specifically shown in Table 2, after riser, suitably adjust roll casting speed.
Case temperature, mill speed and width of plate slab before table 2
| Width of plate slab (mm) | 1060 | 1120 | 1260 | 1360 |
| Mill speed (mm/min) | 800-830 | 770-800 | 740-770 | 700-730 |
| Front case temperature (DEG C) | 683-685 | 685-690 | 690-695 | 695-700 |
D. casting wrench is sent into traction machine traction, adjusts hydraulic motor speed, after clipped machine crop, be re-fed into coiling machine,
After starting roll bending, unclamp traction machine.
E. before baking being scalded, case material, race slag charge, riser waste material etc. are collected and are weighed, and note is on card.
F. after ejecting plate, measure both sides thickness, as undesirable, will regulate in time and press cylinder pressure differential to regulate same plate poor.
G. record technological parameter: front case liquid level and metal temperature, the main flow of depassing unit, shunt volume, monitoring pressure,
Electric current, voltage, roll casting speed, hydraulic pressure, water temperature, roll.
H., in strip casting process, find, when there is mass defect in plate face, processes in time and be labeled at edge's wax crayon.
Rolling up largest outside diameter when i. cutting volume and do not exceed 1600mm, start traction machine, clamping speed governing is consistent with Casting Rolled Sheet speed.Cut
Cutting, adjust dump car, it is the most loose that tension is not wanted in volume position, top, and termination is batched close to stopping during idler roller of trolley, is released by volume, with
Time to good coiler jaw, prepare to batch next time.
J. casting volume stack before, first weigh, then volume in, volume outside respectively with wax crayon write exactly alloy designations, heat (batch) number, heat number,
Reel number, production team and weight.
K. cut the wide one piece of Casting Rolled Sheet test piece of 70-80mm at end often rolling up, do grain size, with plate difference with penetrate pore inspection.
1. the regulation that test piece prints: test piece is cut into along its length quarter, stamps steel seal on strip or write with wax crayon
Upper: heat (batch) number heat reel number serial number.
M. casting volume production specification is shown in Table 3.
Table 3 casting volume production specification
Embodiment 2:
It is as follows that the chemical composition of 3003A presses mass fraction: the Fe of 0.55%, the Si of 0.15%, the Mn of 1.2%, the Cu of 0.05%,
The Zn of 0.1%, other inevitable impurity account for 0.15%, and surplus is Al.
Preparation method is with embodiment 1.
Embodiment 3:
It is as follows that the chemical composition of 3003A presses mass fraction: the Fe of 0.5%, the Si of 0.12%, the Mn of 1.2%, the Cu of 0.08%,
The Zn of 0.1%, other inevitable impurity account for 0.15%, and surplus is Al.
Preparation method is with embodiment 1.
To above-described embodiment 1,2,3 carry out the inspection of following index: 1, the hydrogen content of melt and chemical composition；2, grain size
Pickling；3, Budgerigar stricture of vagina and striped alkali cleaning；4, the monitoring of template.Result all reaches requirement.
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 (9)
1. an aluminium alloy brazing fin material 3003A, it is characterised in that it is as follows that the chemical composition of described 3003A presses mass fraction:
The Cu of the Mn of the Si of the Fe of 0.5-0.55%, 0.1-0.15%, 1.2-1.25%, 0.05-0.1%, the Zn of 0.1%, other can not
The impurity avoided accounts for 0.15%, and surplus is Al.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 1, it is characterised in that include
Following steps:
1) shove charge, by the shove charge in order of aluminium ingot, waste material and intermediate alloy, when producing sheet material, waste material ratio controls at 25-30%, raw
When producing aluminium foil, waste material ratio controls at 30-35%；
2) melting, when furnace charge softens and stays, is uniformly sprinkled into coverture, when furnace chargeization at ordinary times, then spread last layer, to cover comprehensively
Lid melt；When furnace charge major part fusing, it is stirred；After furnace charge all melts, skim in melting temperature range；
And sample analysis, carry out feed supplement if desired, make composition reach the requirement of 3003A；
3) leading stove prepurging, when leading stove, standing furnace fire box temperature must not be less than 800 DEG C；In standing furnace, melt temperature must not be less than
730℃；
4) lead furnace rear refine degasification again, skim, smelting furnace refine；
5) casting rolling, cuts volume, rolls up largest outside diameter and do not exceed 1600mm when cutting volume.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 1) in, add aluminum water after charging, stay the waste material of 5%, after waiting aluminum water all to add, carry out secondary batching again.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 2) in, total consumption of described coverture is 20-40kg.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 2) in, probe temperature should be more than 730 DEG C, and feed supplement temperature should be more than 740 DEG C.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 3) in, to lead stokehold and carry out a spraying type refine in, refining temperature should be sprayed into as carrier by nitrogen more than 740 DEG C
In stove, nitrogen pressure 0.1MPa.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 4) in, the melt of refine should carry out the mensuration of air content, and air content should refine again more than during 0.15/100g.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 4) in, refine grain size to be controlled, the method taking to add titanium silk online.
The preparation method of a kind of aluminium alloy brazing fin material 3003A the most according to claim 2, it is characterised in that described
Step 4) in, to filter after refine, use ceramic filter plate deep water dual pathways single filter, screen plate thickness is not less than 60mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811628A (en) * | 2017-01-19 | 2017-06-09 | 江苏鼎胜新能源材料股份有限公司 | A kind of method that casting and roll process produces power battery case aluminium strip |
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| JPS62185856A (en) * | 1986-02-13 | 1987-08-14 | Nippon Radiator Co Ltd | Sheet for heat exchanger made of aluminum |
| US5011547A (en) * | 1988-09-12 | 1991-04-30 | Kabushiki Kaisha Kobe Seiko Sho | Aluminum alloy composite material for brazing |
| 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 |
| CN102912191A (en) * | 2011-08-01 | 2013-02-06 | 江阴新仁科技有限公司 | 3003 reflective foil aluminum alloy |
-
2015
- 2015-01-15 CN CN201510031332.0A patent/CN105886843A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62185856A (en) * | 1986-02-13 | 1987-08-14 | Nippon Radiator Co Ltd | Sheet for heat exchanger made of aluminum |
| US5011547A (en) * | 1988-09-12 | 1991-04-30 | Kabushiki Kaisha Kobe Seiko Sho | Aluminum alloy composite material for brazing |
| 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 |
| CN102912191A (en) * | 2011-08-01 | 2013-02-06 | 江阴新仁科技有限公司 | 3003 reflective foil aluminum alloy |
Non-Patent Citations (3)
| Title |
|---|
| 刘俊义主编: "《机械制造工程训练》", 31 December 2013 * |
| 杜科选等: "《铝电解和铝合金铸造生产与安全》", 31 May 2012 * |
| 王祝堂等: "《轨道车辆用铝材手册》", 30 November 2013 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811628A (en) * | 2017-01-19 | 2017-06-09 | 江苏鼎胜新能源材料股份有限公司 | A kind of method that casting and roll process produces power battery case aluminium strip |
| CN106811628B (en) * | 2017-01-19 | 2018-06-19 | 江苏鼎胜新能源材料股份有限公司 | A kind of method of casting and roll process production power battery case aluminium strip |
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Application publication date: 20160824 |