CN104451231A - Technological method for producing foamed aluminium by using secondary aluminium - Google Patents
Technological method for producing foamed aluminium by using secondary aluminium Download PDFInfo
- Publication number
- CN104451231A CN104451231A CN201410668542.6A CN201410668542A CN104451231A CN 104451231 A CN104451231 A CN 104451231A CN 201410668542 A CN201410668542 A CN 201410668542A CN 104451231 A CN104451231 A CN 104451231A
- Authority
- CN
- China
- Prior art keywords
- aluminium
- aluminum
- foamed aluminium
- foamed
- recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention patent discloses a technological method for producing foamed aluminium by using secondary aluminium. The main technical scheme is as follows: secondary aluminium with specific ingredients is used, and pure aluminium, silicon, magnesium and the like with certain ingredients are added to synthesize the needed proportion, then direct remelting is carried out, and deironing treatment is carried out on the molten aluminium; a foamer, a tackifier and the like are added to the treated molten aluminium, and a foamed aluminium material is produced by a melt foaming method. According to the method disclosed by the invention, the alloy ingredients contained in the secondary aluminium are utilized, the harmful iron element is removed, and the raw material cost is reduced; meanwhile, the secondary molten aluminium is used for directly producing foamed aluminium, and thus a new way is provided for the already superfluous aluminium capacity of China.
Description
Technical field:
[0001] the present invention relates to a kind of processing method adopting secondary aluminum to produce foamed aluminium, belong to materials processing technology field.
Background technology:
[0002] foamed aluminium, add additive in pure aluminum or aluminum alloy after, forms through foam process, has metal and bubble feature concurrently simultaneously.It has the features such as density is little, high-selenium corn impact capacity is strong, high temperature resistant, fire resistance is strong, anticorrosive, sound insulation and noise reduction, thermal conductivity are low, electromagnetic wave shielding is high, weathering resistance is strong, and on space flight naval vessel, automobile collision preventing, road sound insulation, the field such as Building Fire Protection obtain application.The energy-absorbing of foamed aluminium has good speed emergent property, that is, strain rate is larger, and the absorbent energy of unit volume foamed aluminium institute is larger, reaches as high as 8 ~ 30J/cm
3.This performance of foamed aluminium, becomes optimal energy-absorbing, crashproof and explosion-proof lamp.At present, the large factories of automobile such as benz, BMW and Honda use foamed aluminium material, for the anti-collision energy absorption of car body at places such as automobile buffer beam, A post, B posts.The internal-security forces that Korea S sends this year, its military camp material therefor is also foamed aluminium, for preventing stray bullet and sniper's shot etc.In China's recent Xinjiang peace-keeping operations, also for army is equipped with foamed aluminium military camp, and be equipped with foamed aluminium protective shield for troop transporter.
[0003] aluminium is a kind of resource of reusable edible, and current secondary aluminum accounts for more than 1/3 of world's primary aluminum annual production.Secondary aluminum is identical with primary aluminum performance, the remelting of available regenerative aluminium ingot, refining and purification, makes various cast aluminium alloy and wrought aluminium alloy, and then be processed into aluminium casting or plastic working aluminium through adjustment chemical composition.China is the big country of aluminium output, but compares with other developed country, and whole industrial structure is irrational, and the development of secondary aluminum industry size falls behind.Development secondary aluminum industry can solve the crisis of China's aluminium industry; meet the trend of world today's aluminium industry development; meet the needs of China's Sustainable development and Scientific Outlook on Development relevant policies, therefore China's aluminium industrial structure urgently strengthens the development ratio of secondary aluminum industry.Along with the increase of domestic aluminium consumption, the storage capacity of domestic renewable aluminum raw material expands year by year, ends 2009, and China has used aluminium greatly about about 9,000 ten thousand tons, and this will be our secondary aluminum resource from now on undoubtedly.China's renewable aluminum raw material source is divided into: the old waste material of domestic recovery, the new waste material of domestic recovery and import waste material.China's renewable aluminum raw material structure proportion in 2009 is that interior new waste material accounts for 19%, and interior old waste material accounts for 21%, and import waste material accounts for 60%.This illustrates that China's renewable aluminum raw material structure needs to change, and should make full use of domestic old aluminium waste.Often produce the bauxite that one ton of electrolytic aluminum needs consumption more than 5 tons, 530-550kg anode mix, broken 1.314 square metres, ring vegetation.Aluminum Electrolysis Production process need consumes the multiple resources of production, and along with the growing tension of resource, improving constantly of the fringe costs such as bad border improvement, the production advantage of secondary aluminum day by day highlights.Secondary aluminum actual production energy consumption is equivalent to the 3%-5% producing electrolytic aluminum energy consumption, it is comparatively comprehensive to the demand of energy source type, pendulum has held in the palm the dependence of Aluminum " valency rises with electricity ", using secondary aluminum industry as leading industry advantageously in the healthy and stable of Aluminum market and long-run development.According to " China Aluminum Recycling industry production and marketing demand and investment forecasting analysis report are looked forward to the prospect " data presentation, 2005, China's secondary aluminum output about 600,000 tons, was only second to the U.S., occupies second place of the world, account for 21.82% of global output; 2006, China's secondary aluminum output 74.5 ten thousand tons, became the secondary aluminum producing country that the whole world is maximum, accounts for 21.92% of global output.2010, China's secondary aluminum output reached 4,000,000 tons, increases by 29% on a year-on-year basis.Along with the development of the industries such as China's die casting, aluminium section bar, automobile, household electrical appliances, will constantly increase the demand of secondary aluminum, secondary aluminum industry development has a extensive future.Developed country all attaches great importance to for the use of secondary aluminum, the ratio that Japanese secondary aluminum accounts for primary aluminum reaches 95%, the U.S. also has more than 52%, Germany accounts for more than 54%, and China only has about 20% at present, usage ratio, the secondary aluminum ratio of China lags far behind World Developed Countries, has very large development space.
[0004] adopt secondary aluminum to produce foamed aluminium and there is the problems such as composition is uncertain, process parameter variation.Especially the problem that in secondary aluminium alloy, iron level is too high.This is mainly owing to increasing with iron level, the very high pin of hardness own, sheet short iron phase can be formed in metallographic structure, the matrix of aluminium alloy has been isolated in its existence, reduce the mechanical property of alloy, especially toughness, and part machinery difficulty of processing is increased, cutter, cutlery serious wear, poor dimensional stability etc., but, in low-quality aluminum alloy ingot, iron level is inherently high, and along with the reuse of alloy furnace charge, Iron reutilization in production, instrument, the use of putting pre-part etc. make alloy increase iron to can hardly be avoided.Therefore, at present, China's foamed aluminium is produced and is all adopted primary aluminium.
Summary of the invention:
[0005] the present invention is a kind of processing method adopting secondary aluminum to produce foamed aluminium, its technical scheme is the recovery aluminium using special component, adds the composition such as fine aluminium, silicon, magnesium of certain ingredients, the proportioning required for synthesis, then directly remelting, and deironing process is carried out to aluminium liquid.Whipping agent, tackifier etc. are added to the aluminium liquid handled well, adopts foam melt method to produce foamed aluminium material.。
[0006] recovery aluminum used is more stable certain the specific recovery aluminium of composition, as reclaimed wheel hub, reclaiming aluminum alloy doors and windows, reclaiming aluminium casting etc.
[0007] to recovery aluminium as required, add the composition such as fine aluminium, silicon, magnesium of certain ingredients, the proportioning required for synthesis, then adopt the methods such as electromagnetic adsorption method, sosoloid settling process to carry out deironing process to aluminium liquid.After process, spectrum test is carried out to aluminium sample, guarantee that Iron in Aluminium Alloy content is down within 0.4%.
[0008] foamed aluminium production method is foam melt method, produce foamed aluminium, its porosity is 60 ~ 90%, and density is 0.3 ~ 1 × 10
3kg/m
3, ultimate compression strength is 16 ~ 24MPa, and thermal expansivity is (14 ~ 19) × 10
-6/ ° C, energy-absorbing rate 8 ~ 30J/cm
3.
Beneficial effect:
[0009] the inventive method make use of and reclaims alloying constituent contained by self in aluminium, eliminates harmful ferro element simultaneously, foamed aluminium is produced recovery aluminium can be adopted as raw material, reduce raw materials cost.Simultaneously by secondary aluminum liquid direct production foamed aluminium, the aluminium production capacity superfluous for China provides new outlet.
Embodiment:
[0010] for better the present invention to be described, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows.
[0011] adopt recovery automotive hub (composition is USS A356 aluminium) as raw material, remelting generates A356 molten aluminium alloy.Due to can fractions be lost after aluminium remelting, therefore add 5% fine aluminium, 1% magnesium rod for adjusting component, add 0.05% rare earth material simultaneously and do Metamorphism treatment, improve aluminium alloy capability.
[0012] prepare burden after remelting, first adopt electromagnetic adsorption method to remove the composition such as iron screw, iron filings, scum, ferric oxide possible in aluminum solutions, churning time 10 minutes.Then add 0.05% norbide and do chemical removal of iron process.Finally logical nitrogen does refining treatment, the logical 5 minutes nitrogen time.
[0013] for the aluminium liquid handled well, casting laboratory sample, send spectrum detection instrument to measure aluminium liquid composition.
[0014] aluminium liquid is imported foaming pond, tackifier, whipping agent etc. are added to aluminium liquid, carry out foaming process.Blowing temperature 750 ° of C, stirring velocity 1000 revs/min, churning time 3 minutes, soaking time 5 minutes.Be incubated complete after do cooling process.
[0015] institute's production aluminum foam product, its porosity is 80%, and density is 0.6 × 10
3kg/m
3, ultimate compression strength is 20MPa.
[0016] applicant's statement, above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. the processing method adopting secondary aluminum to produce foamed aluminium, its technical scheme is: the recovery aluminium using special component, add the composition such as fine aluminium, silicon, magnesium of certain ingredients, proportioning required for synthesis, then directly remelting, and deironing process is carried out to aluminium liquid, whipping agent, tackifier etc. are added to the aluminium liquid handled well, adopts foam melt method to produce foamed aluminium material.
2. the processing method of foamed aluminium produced by employing secondary aluminum according to right 1, it is characterized in that: recovery aluminum used is more stable certain the specific recovery aluminium of composition, as reclaimed wheel hub, reclaiming aluminum alloy doors and windows, reclaiming aluminium casting etc.
3. the processing method of foamed aluminium produced by the employing secondary aluminum according to right 2, it is characterized in that: to recovery aluminium as required, add the composition such as fine aluminium, silicon, magnesium of certain ingredients, proportioning required for synthesis, then the methods such as electromagnetic adsorption method, sosoloid settling process are adopted to carry out deironing process to aluminium liquid, after process, spectrum test is carried out to aluminium sample, guarantee that Iron in Aluminium Alloy content is down within 0.4%.
4. the processing method of foamed aluminium produced by employing secondary aluminum according to right 1, it is characterized in that: foamed aluminium production method is foam melt method, produce foamed aluminium, its porosity is 60 ~ 90%, and density is 0.3 ~ 1 × 10
3kg/m
3, ultimate compression strength is 16 ~ 24MPa, and thermal expansivity is (14 ~ 19) × 10
-6/ ° C, energy-absorbing rate 8 ~ 30J/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668542.6A CN104451231A (en) | 2014-11-20 | 2014-11-20 | Technological method for producing foamed aluminium by using secondary aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668542.6A CN104451231A (en) | 2014-11-20 | 2014-11-20 | Technological method for producing foamed aluminium by using secondary aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451231A true CN104451231A (en) | 2015-03-25 |
Family
ID=52897972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410668542.6A Pending CN104451231A (en) | 2014-11-20 | 2014-11-20 | Technological method for producing foamed aluminium by using secondary aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104451231A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889676A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Foam aluminum alloy-made wheel hub preparation method |
| CN107217176A (en) * | 2017-05-13 | 2017-09-29 | 合肥市库仑动力安全科技有限公司 | A kind of foamed aluminum materials with high capability of electromagnetic shielding |
| CN110142396A (en) * | 2019-06-25 | 2019-08-20 | 内蒙古工业大学 | A kind of casting method of foam aluminium alloy platform |
-
2014
- 2014-11-20 CN CN201410668542.6A patent/CN104451231A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 卢惠民: "再生铝在隔音材料中的应用", 《有色金属再生与利用》 * |
| 覃国平等: "废铝再生制备小孔径泡沫铝的展望", 《科技创新导报》 * |
| 谭喜平等: "再生铝合金除铁技术的研究现状与展望", 《铸造技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889676A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Foam aluminum alloy-made wheel hub preparation method |
| CN107217176A (en) * | 2017-05-13 | 2017-09-29 | 合肥市库仑动力安全科技有限公司 | A kind of foamed aluminum materials with high capability of electromagnetic shielding |
| CN110142396A (en) * | 2019-06-25 | 2019-08-20 | 内蒙古工业大学 | A kind of casting method of foam aluminium alloy platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102851519B (en) | Novel aluminum refining agent, and preparation method thereof | |
| CN107964593B (en) | A method of lithium in lithium cell slag is scrapped by chloridising roasting evaporation recycling | |
| CN103555955A (en) | Resource utilization method of aluminum ash | |
| CN103938001A (en) | Production process for recycled aluminum | |
| CN105274346A (en) | Aluminum ash recycling process | |
| CN107626712A (en) | A kind of aluminium electroloysis danger solid waste integrated conduct method and recycling | |
| CN102021343A (en) | Method for separating and recovering scandium oxide from aluminum-scandium alloy smelting waste | |
| CN104451231A (en) | Technological method for producing foamed aluminium by using secondary aluminium | |
| CN112921194B (en) | Method for preparing high-performance target-component regenerated aluminum alloy from waste aluminum | |
| CN104409792A (en) | Waste lithium battery resource recycling method and application of product | |
| CN107955887A (en) | A kind of high-magnesium aluminum alloy cleaning molten treatment process | |
| CN101948957B (en) | Vacuum distillation method for magnesium alloy | |
| Kumar et al. | Aluminum-foam by powder metallurgy: A review | |
| CN106282622B (en) | A kind of aluminium scrap renovation process of cast aluminium alloy gold | |
| CN105088026A (en) | Castable aluminum alloy material for cylinder cover and preparation method thereof | |
| Tang et al. | Effect on mechanical and thermodynamic properties of Al-10Si-0.8 Fe alloys with Al-Ti-C and Ce compound additions | |
| CN103146939B (en) | Method for reducing content of lead in lead brass | |
| CN106702175A (en) | Composite refining agent of scrap copper | |
| CN102296202A (en) | Foaming agent and preparation method thereof | |
| CN102296203B (en) | Foaming agent for foamed aluminum and foamed aluminum alloy and preparation method thereof | |
| CN108374109B (en) | Method for preparing regenerated aluminum alloy from waste pop cans | |
| CN104561717B (en) | high performance heat resistant cast magnesium alloy and preparation method thereof | |
| CN104561635A (en) | Foamed aluminum production process combining melt-foaming method and bottom blowing method | |
| CN107287425B (en) | A method of separating aluminum metal from metal mixture | |
| Lv et al. | The electrochemical behaviors of Mg-5Li-3Al-1La and Mg-8Li-3Al-1La alloys in sodium chloride solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |