CN104611603A - Improved technology for production of foamed aluminum based on melt foaming method - Google Patents
Improved technology for production of foamed aluminum based on melt foaming method Download PDFInfo
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- CN104611603A CN104611603A CN201410655536.7A CN201410655536A CN104611603A CN 104611603 A CN104611603 A CN 104611603A CN 201410655536 A CN201410655536 A CN 201410655536A CN 104611603 A CN104611603 A CN 104611603A
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- Prior art keywords
- foaming
- whipping agent
- production
- aluminium
- foamed
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 62
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000005187 foaming Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims description 50
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000006260 foam Substances 0.000 claims description 22
- 238000013019 agitation Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000004088 foaming agent Substances 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 2
- 238000004321 preservation Methods 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000048 titanium hydride Inorganic materials 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 241001466460 Alveolata Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an improved technology for production of foamed aluminum based on a melt foaming process. Directed at the problem that in the traditional production process of foamed aluminum by a melt foaming method, the density gradient distributed along the vertical direction is likely to form under the influence of gravity in the heat preservation foaming link, a layer of foaming agent is preset at the bottom of a foaming pool used in the heat preservation foaming molding link. A stirred and foamed aluminum liquid is poured from a stirring barrel into the foaming pool, and the bottom foaming agent reacts with the bottom aluminum liquid to generate bubbles floating upward slowly. By controlling the floating opportunity, the bubbles can solidify before complete floating so as to form a gradient with a lot of bubbles at the bottom and few bubbles at the upper part, thus counteracting the influence of gravity on original bubbles. The method provided by the invention is still based on the traditional die foaming method in terms of principles, does not change the core process, and realizes high reliability foaming production of uniform density foamed aluminum at very low cost, and is an effective improvement to existing melt foaming foamed aluminum production.
Description
Technical field:
The invention belongs to metal material processing technology field, particularly relate to a kind of improving technique producing foamed aluminium based on foam melt method.
Background technology:
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.
In foamed aluminium traditional preparation methods, foam melt method technique is as follows: in aluminium liquid, add tackifier, add whipping agent after stirring, and puts in the mould of certain temperature to carry out foaming and form.Its concrete tool parameters is: tackifier adopt calcium grain, and it adds the viscosity of temperature to melt and has a significant impact, and temperature more high viscosity is larger, adds 2%Ca grain stirring 10min can obtain suitable flux foaming viscosity at 660 DEG C.The mixing effect of hinge paddle type stirrer is desirable, adopts and adds while put forward high-revolving method and add TiH2 and be easy to whipping agent to be uniformly dispersed.Granularity is selected to be the foam that 74 μm of TiH2 particles can obtain higher porosity.Titanium hydride addition should in 1.0 ~ 1.6% scopes, and blowing temperature selects 620 ~ 630 DEG C of scopes, and the type of cooling is natural slow cooling in atmosphere, and makes foaming groove temperature higher than melt 10 DEG C.The preparation of the aluminum alloy foam aluminium plate of different thickness 500mm × 1000mm × X can be realized.Foam melt method prepares the technological process of foamed aluminium and process flow sheet is shown in Fig. 1.
Traditional foam melt method is produced in the preparation process of foamed aluminium, in thermal insulation foaming link, owing to being affected by gravity, naturally float after the bubble formation in foamed aluminium, and aluminium liquid sinks, be easy to form the density gradient vertically distributed, that is, aluminium liquid in bottom is many, and density is large, and top bubble is many, density is little.This characteristic of foam melt method, limits its yield rate, thus improves production cost, limits the high volume applications of foamed aluminium in engineering.
The problem that interval type foam density is uneven in order to solve, production cost is high, US Patent No. .pat6984356B2 describes a kind of continuous production method of foamed aluminium, but this patent can not be measured as required and carry out online thickening to melt, do not point out to measure on-line tuning whipping agent how as required thus the aluminum foam product obtaining having different porosities yet.In order to solve the problem existing for US Patent No. .pat6984356B2, the patent CN100422363C of the application such as Central South University Zhou Xiangyang, CN102312117A, CN201210499401.7A etc. propose the method for a series of continuous seepage foam aluminium plate based on foam melt method.The method utilizes the continuous seepage of vertical direction, avoids the problem of foamed aluminium finished product Midst density gradient.The method efficiency is high, equipment is complicated, and owing to having carried out changing thoroughly to traditional processing technology, coupling etc. between the design of equipment, the technology controlling and process of each link, each operation remains in some problems, therefore cannot produce in batches at field of industrial production at present.That is, in the foamed aluminium production technique of having gone into operation at present, still do not have ripe way to solve the problem of density gradient.
Summary of the invention:
In order to solve above method Problems existing, the present invention proposes a kind of improving technique producing foamed aluminium based on foam melt method, bottom the foaming pond that the shaping link of thermal insulation foaming is used, the whipping agent of preset one deck.Stir the aluminium liquid after foaming and enter foaming Chi Zhonghou by toppling in agitation vat, the aluminium liquid of bottom whipping agent and bottom reacts, and produces bubble and slowly float in bottom.Control floating opportunity, bubble can be made namely to solidify before floating completely, thus form the gradient of a many bubble in bottom, top weak breath bubble, counteract gravity to former alveolate impact.
Foaming pond 1 is rectangle, and bottom foaming pond, paving spills a certain amount of whipping agent 3 in advance.Be provided with the gasket 5 of asbestos material bottom foaming pond, in stirring foaming link, the agitation vat 2 of lower hollow is positioned over above asbestos seal pad.During production, aluminium liquid melting completed is poured onto in agitation vat, adds tackifier, whipping agent, and then start agitator 4 pairs of aluminium liquid and stir, the aluminium liquid after thickening fully contacts with whipping agent, completes foaming.Then, the agitation vat of lower hollow is upwards mentioned, the aluminium liquid foamed enter foaming pond, start insulation, shaping.In the process that insulation is shaping, the whipping agent continuation foaming that bottom is preset, bubble floating also stops, and counteracts the impact that aluminium liquid sinks to causing, thus obtains the homogeneous foamed aluminium material of density.
Whipping agent used is TiH
2, addition is 1 ~ 1.5%.Whipping agent used bottom foaming pond, its add-on is 5 ~ 20% of foaming link add-on.
In agitation vat, temperature controls at 650 ~ 670 ° of C, and churning time is 10min.In foaming pond, temperature controls at 550 ~ 650 ° of C.
Beneficial effect:
Method proposed by the invention, based on traditional mould foaming in principle, not changing core process, but achieve the uniform density foamed aluminium foam production of high reliability with extremely low cost, is the effective improvement of one of producing current flux foaming foamed aluminium.
Accompanying drawing illustrates:
Fig. 1 is the technological process adopting foam melt method to prepare foamed aluminium.
Fig. 2 is that foam melt method produces Aluminum Foam improvement schematic diagram.
Reference numeral: 1 foaming pond; 2 agitation vats; 3 agitating vanes; 4 asbestos seal pads; 5 whipping agents.
Embodiment:
For better the present invention being described, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows.
Melting is carried out to 0.5 ton of A356 aluminum alloy materials, during temperature of aluminum liquid 700 ° of C, topples over and enter agitation vat.
It is 660 ° of C that agitation vat temperature controls, and whipping agent used is TiH
2, addition is 1.2%.Tackifier used are alumina-ceramic powder, and addition is 2%.Stirring velocity 1000 revs/min, churning time 10 minutes.
Bottom foaming pond, paving spills the TiH of 0.2% in advance
2whipping agent 3.Then, the agitation vat of lower hollow is upwards mentioned, the aluminium liquid foamed enter foaming pond, start insulation, shaping.Holding temperature is 600 ° of C, soaking time 3 minutes.Adopt cooling of blowing after 3 minutes, foamed aluminium is shaping.
Institute's production aluminum foam product, its porosity is 80%, and density is 0.6 × 10
3kg/m
3, density error scope is within ± 5%.
Applicant states, 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. produce the improving technique of foamed aluminium based on foam melt method for one kind, it is characterized in that: foaming pond 1 is rectangle, bottom foaming pond, paving spills a certain amount of whipping agent 3 in advance, the gasket 5 of asbestos material is installed bottom foaming pond, in stirring foaming link, the agitation vat 2 of lower hollow is positioned over above asbestos seal pad, during production, aluminium liquid melting completed is poured onto in agitation vat, add tackifier, whipping agent, then start agitator 4 pairs of aluminium liquid to stir, the aluminium liquid after thickening fully contacts with whipping agent, completes foaming; Then, the agitation vat of lower hollow is upwards mentioned, the aluminium liquid foamed enter foaming pond, start insulation, shaping; In the process that insulation is shaping, the whipping agent continuation foaming that bottom is preset, bubble floating also stops, and counteracts the impact that aluminium liquid sinks to causing, thus obtains the homogeneous foamed aluminium material of density.
2. the foamed aluminium production loading technique according to right 1, it is characterized in that: the technique adopting foam melt method to produce foamed aluminium in original foaming pond is improved, preset whipping agent bottom foaming pond, whipping agent and aluminium liquid react and produce bubble and float, and can improve the density uniformity of foamed aluminium.
3. the foamed aluminium production loading technique according to right 1, is characterized in that: whipping agent used is TiH
2, addition is 1 ~ 1.5%; Whipping agent used bottom foaming pond, its add-on is 5 ~ 20% of foaming link add-on.
4. based on a rotary multistation foamed aluminium production line for foam melt method, it is characterized in that: in agitation vat, temperature controls at 650 ~ 670 ° of C, and churning time is 10min; In foaming pond, temperature controls at 550 ~ 650 ° of C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410655536.7A CN104611603B (en) | 2014-11-17 | 2014-11-17 | A kind of modified technique producing foamed aluminium based on foam melt method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410655536.7A CN104611603B (en) | 2014-11-17 | 2014-11-17 | A kind of modified technique producing foamed aluminium based on foam melt method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104611603A true CN104611603A (en) | 2015-05-13 |
| CN104611603B CN104611603B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410655536.7A Active CN104611603B (en) | 2014-11-17 | 2014-11-17 | A kind of modified technique producing foamed aluminium based on foam melt method |
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| Country | Link |
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| CN (1) | CN104611603B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063432A (en) * | 2015-08-06 | 2015-11-18 | 苏州好洁清洁器具有限公司 | Aluminium alloy material for telescopic aluminium alloy pipe and preparation method of aluminium alloy material |
| CN110252998A (en) * | 2019-05-06 | 2019-09-20 | 上海大学 | The preparation method of ring or the light composite material of class ring form |
| CN113249606A (en) * | 2020-02-07 | 2021-08-13 | 茹建芳 | Method for producing foamed aluminum by adopting rotary lifting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179473A (en) * | 1996-10-10 | 1998-04-22 | 中国科学院固体物理研究所 | Process for preparing foam metal aluminium and its alloy |
| CN1298777A (en) * | 1999-12-08 | 2001-06-13 | 中国船舶重工集团公司第七研究院第七二五研究所 | Method and equipment for manufacturing foam metal by composite mould and lifting pouring |
| CN1644723A (en) * | 2005-01-28 | 2005-07-27 | 华中科技大学 | Production of foamed aluminosilicate alloy material with controllable density and aperture |
| CN1876860A (en) * | 2006-06-13 | 2006-12-13 | 东南大学 | Rustproof closed-cell foam aluminium alloy and preparation method thereof |
| JP2007238971A (en) * | 2006-03-06 | 2007-09-20 | Taiheiyo Cement Corp | Porous aluminum composite material and its production method |
| CN102002607A (en) * | 2010-12-14 | 2011-04-06 | 东莞理工学院 | Method for preparing foamed aluminum by foaming melt |
-
2014
- 2014-11-17 CN CN201410655536.7A patent/CN104611603B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179473A (en) * | 1996-10-10 | 1998-04-22 | 中国科学院固体物理研究所 | Process for preparing foam metal aluminium and its alloy |
| CN1298777A (en) * | 1999-12-08 | 2001-06-13 | 中国船舶重工集团公司第七研究院第七二五研究所 | Method and equipment for manufacturing foam metal by composite mould and lifting pouring |
| CN1644723A (en) * | 2005-01-28 | 2005-07-27 | 华中科技大学 | Production of foamed aluminosilicate alloy material with controllable density and aperture |
| JP2007238971A (en) * | 2006-03-06 | 2007-09-20 | Taiheiyo Cement Corp | Porous aluminum composite material and its production method |
| CN1876860A (en) * | 2006-06-13 | 2006-12-13 | 东南大学 | Rustproof closed-cell foam aluminium alloy and preparation method thereof |
| CN102002607A (en) * | 2010-12-14 | 2011-04-06 | 东莞理工学院 | Method for preparing foamed aluminum by foaming melt |
Non-Patent Citations (1)
| Title |
|---|
| 丁浩: "《塑料工业实用手册 第二版 中册》", 31 August 2000 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063432A (en) * | 2015-08-06 | 2015-11-18 | 苏州好洁清洁器具有限公司 | Aluminium alloy material for telescopic aluminium alloy pipe and preparation method of aluminium alloy material |
| CN110252998A (en) * | 2019-05-06 | 2019-09-20 | 上海大学 | The preparation method of ring or the light composite material of class ring form |
| CN113249606A (en) * | 2020-02-07 | 2021-08-13 | 茹建芳 | Method for producing foamed aluminum by adopting rotary lifting |
| CN113249606B (en) * | 2020-02-07 | 2022-04-26 | 茹建芳 | Method for producing foamed aluminum by adopting rotary lifting |
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| Publication number | Publication date |
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| CN104611603B (en) | 2017-03-01 |
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Address after: 236500 Anhui city of Fuyang Province Jieshou City Xicheng Industrial Park, North Ring Road Patentee after: Anhui Yiming new Mstar Technology Ltd Address before: 236500 Anhui city of Fuyang Province Jieshou City Xicheng Industrial Park Patentee before: JIESHOU YIMING NEW MATERIAL TECHNOLOGY CO., LTD. |
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Denomination of invention: Improved technology for production of foamed aluminum based on melt foaming method Effective date of registration: 20181116 Granted publication date: 20170301 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: Anhui Yiming new Mstar Technology Ltd Registration number: 2018340000647 |
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Date of cancellation: 20200408 Granted publication date: 20170301 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: ANHUI YIMING NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: 2018340000647 |
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Denomination of invention: Improved technology for production of foamed aluminum based on melt foaming method Effective date of registration: 20200408 Granted publication date: 20170301 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: ANHUI YIMING NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2020990000292 |
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Date of cancellation: 20210421 Granted publication date: 20170301 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: ANHUI YIMING NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2020990000292 |