CN101182608A - Preparation method of small pore diameter foamed aluminium - Google Patents

Preparation method of small pore diameter foamed aluminium Download PDF

Info

Publication number
CN101182608A
CN101182608A CNA2007100664464A CN200710066446A CN101182608A CN 101182608 A CN101182608 A CN 101182608A CN A2007100664464 A CNA2007100664464 A CN A2007100664464A CN 200710066446 A CN200710066446 A CN 200710066446A CN 101182608 A CN101182608 A CN 101182608A
Authority
CN
China
Prior art keywords
aluminum
foaming
stirring
foamed aluminium
pore diameter
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.)
Granted
Application number
CNA2007100664464A
Other languages
Chinese (zh)
Other versions
CN101182608B (en
Inventor
左孝青
毕于顺
陆建生
周芸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunming University of Science and Technology
Original Assignee
Kunming University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kunming University of Science and Technology filed Critical Kunming University of Science and Technology
Priority to CN2007100664464A priority Critical patent/CN101182608B/en
Publication of CN101182608A publication Critical patent/CN101182608A/en
Application granted granted Critical
Publication of CN101182608B publication Critical patent/CN101182608B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Powder Metallurgy (AREA)

Abstract

A method for preparing a small-aperture foam aluminum belongs to the preparation field of the porous metal material. The process steps of the invention are that after aluminum or aluminum alloy is melted, adhesion promoter and grains of core-forming agent of TiO<2> are added for mixing; and then the vesicant of TiH<2> which is oxidated is added into the molten mixture for mixing and dispersing; and then the small-aperture foam aluminum is obtained after the processes of mixing and foaming, heat preservation and foaming and cooling. The invention can realize the fined foam aluminum aperture and uniformization of the hole structure; moreover, the invention has simple process and is fit for large-scale production.

Description

A kind of preparation method of small pore diameter foamed aluminium
Technical field
The invention belongs to the preparation field of porous foam metal material, particularly a kind of small pore diameter foamed aluminium preparation methods.
Background technology
Foamed aluminium has light weight, high specific strength, sound-absorbing, damping, insulation, characteristic such as heat insulation, in fields such as building, automobile, decoration, space flight and aviation, boats and ships, noise control, vibroshocks huge market potential is arranged all.
At present, the mean pore size of known flux foaming foamed aluminium is 3mm~6mm, and existing studies show that is when the foamed aluminium mean pore size is reduced to 1mm when following, the macroscopic pores structural inhomogeneity of foamed aluminium reduces, and the mechanical property of foamed aluminium and energy absorption improve.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of small pore diameter foamed aluminium; it can realize the refinement in foamed aluminium aperture; obtain mean pore size less than 1mm, the uniform foamed aluminium of pore structure, it is simple to have technology simultaneously, is fit to the characteristics of large-scale production.
Processing step of the present invention is: add tackifier Ca and nucleating agent TiO in aluminum or aluminum alloy fusing back 2Particle stirs, after will be through the whipping agent TiH of pre-oxidation treatment 2Add the melt dispersed with stirring, continue to get small pore diameter foamed aluminium after stirring foaming, thermal insulation foaming, the cooling.
The present invention also comprises following technical scheme: each component ratio that 1. prepares small pore diameter foamed aluminium is: the tackifier calcium metal is 1wt.%~4wt.%, nucleating agent TiO 2For 0.2wt.%~2wt.%, whipping agent titanium hydride are 0.5wt.%~2.5wt.%, surplus is an aluminum or aluminum alloy; Nucleating agent TiO 2Granularity be-300 orders, the granularity of whipping agent titanium hydride is-100 orders~-500 orders, and whipping agent pre-oxidation treatment method is, earlier at 400 ℃ of following heating surface oxidation 5~20h, then is warming up to 450 ℃~600 ℃ insulation 1~3h; 2. the aluminum or aluminum alloy temperature of fusion is higher than 50 ℃~200 ℃ of melting point metals, melting and heat preservation time: 20min.~60min.; 3. tackifier calcium and nucleating agent TiO 2Speed with 500rpm~5000rpm behind the adding metal melt stirs 5min.~15min.; 4. the whipping agent dispersed with stirring time is 10s~100s, and speed is 2000rpm~5000rpm; The time of 5. continue stirring foaming is 10s~100s, stirring velocity 500rpm~2000rpm, stir blowing temperature than aluminum or aluminum alloy temperature of fusion low 10 ℃~20 ℃; 6. the thermal insulation foaming temperature is identical with the stirring blowing temperature, and the thermal insulation foaming time is 30s~200s.
Adopt the whipping agent of pre-oxidation treatment, can make that whipping agent decomposition starting temperature after the processing improves, the beginning resolving time postpones, for whipping agent provides the homodisperse time in dispersed with stirring, and, realize that whipping agent disperses, decomposes the coordination of (foaming) for foaming process provides competent gas forming amount.
In molten aluminium, add nucleating agent TiO 2Particle can provide more bubble heterogeneous nucleation core, improves the nucleation rate of bubble, helps the refinement of bubble structure.
After the whipping agent dispersed with stirring, continue to stir foaming, the bubble that initially generates constantly can be broken into tiny bubble, also be beneficial to the refinement of bubble structure.
The invention has the beneficial effects as follows: (1) adds nucleating agent TiO by the whipping agent of employing pre-oxidation treatment, in molten aluminium on the basis of conventional flux foaming technology 2Particle, three technique means of stirring foaming can effectively realize the preparation of small-bore, even structure foamed aluminium, improve the mechanical property and the energy absorption of foamed aluminium.Prepared foamed aluminium technical indicator can reach: mean pore size: 0.5mm~1mm; Porosity: 60%~80%; The pore structure homogeneity: the bottom does not have the liquid collecting solid layer, and vertically the mean pore size difference is less than 30% of mean pore size; (2) appointed condition is simple, can accomplish scale production.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Embodiment one:
The ZLD104 alloy adds the calcium of 2wt.% and the TiO of 0.5wt.% be heated to 680 ℃ of fusings, insulation 30min. in plumbago crucible after 2(granularity is-300 orders) stirred (stirring velocity 4000rpm, churning time 10min) tackify and disperseed nucleating agent TiO melt 2With titanium hydride (2wt.%, granularity-200 order, through 400 ℃ of 5h+500 ℃ of 2h pre-oxidation treatment) join in the melt, dispersed with stirring (stirring velocity 4000rpm, churning time 25s), keep melt temperature at 670 ℃, adopt stirring at low speed foaming (800rpm afterwards, churning time 20s), take out stirring-head and thermal insulation foaming 90s, take out the plumbago crucible air cooling, can obtain that mean pore size 0.9mm, porosity 75%, bottom do not have the liquid collecting solid layer, vertically the mean pore size difference is less than 30% foamed aluminium of mean pore size to room temperature.
Embodiment two:
The AlSi5 alloy adds the calcium of 2.5wt.% and the TiO of 0.8wt.% be heated to 700 ℃ of fusings, insulation 20min. in plumbago crucible after 2(granularity is-300 orders), melt is stirred (stirring velocity 2000rpm, churning time 18min) tackify and disperse whipping agent, with titanium hydride (1.6wt.%, granularity-300 order, through 400 ℃ of 6h+550 ℃ of 1.5h pre-oxidation treatment) join in the melt, dispersed with stirring (stirring velocity 3000rpm, churning time 35s), keeps melt temperature, adopt stirring at low speed foaming (600rpm afterwards at 690 ℃, churning time 25s), take out stirring-head and thermal insulation foaming 70s, take out the plumbago crucible air cooling, can obtain mean pore size 0.8mm to room temperature, porosity 70%, the no liquid collecting solid layer in bottom, vertically the mean pore size difference is less than 30% foam aluminium alloy of mean pore size.
Embodiment three:
Fine aluminium adds the calcium of 3.0wt.% and the TiO of 1.0wt.% be heated to 730 ℃ of fusings, insulation 40min. in plumbago crucible after 2(granularity is-300 orders), melt is stirred (stirring velocity 2500rpm, churning time 15min) tackify and disperse whipping agent, with titanium hydride (1.4wt.%, granularity-300 order, through 400 ℃ of 7h+575 ℃ of 1h pre-oxidation treatment) join in the melt, dispersed with stirring (stirring velocity 2500rpm, churning time 40s), keeps melt temperature, adopt stirring at low speed foaming (700rpm afterwards at 710 ℃, churning time 30s), take out stirring-head and thermal insulation foaming 50s, take out the plumbago crucible air cooling, can obtain mean pore size 0.6mm to room temperature, porosity 68%, the no liquid collecting solid layer in bottom, vertically the mean pore size difference is less than 30% foam aluminium alloy of mean pore size.

Claims (2)

1. the preparation method of a small pore diameter foamed aluminium is characterized in that processing step is: add tackifier calcium and nucleating agent TiO in aluminum or aluminum alloy fusing back 2Particle stirs, be evenly distributed on melt after, will add melt through the whipping agent titanium hydride of pre-oxidation treatment, dispersed with stirring continues to stir foaming, thermal insulation foaming, cool off small pore diameter foamed aluminium.
2. the preparation method of small pore diameter foamed aluminium according to claim 1, it is characterized in that: each component ratio that 1. prepares small pore diameter foamed aluminium is: the tackifier calcium metal is 1wt.%~4wt.%, nucleating agent TiO 2For 0.2wt.%~2wt.%, whipping agent titanium hydride are 0.5wt.%~2.5wt.%, surplus is an aluminum or aluminum alloy; Nucleating agent TiO 2Granularity be-300 orders, the granularity of whipping agent titanium hydride is-100 orders~-500 orders, and whipping agent pre-oxidation treatment method is, earlier at 400 ℃ of following heating surface oxidation 5~20h, then is warming up to 450 ℃~600 ℃ insulation 1~3h; 2. the aluminum or aluminum alloy temperature of fusion is higher than 50 ℃~200 ℃ of melting point metals, melting and heat preservation time: 20min.~60min.; 3. tackifier calcium and nucleating agent TiO 2Speed with 500rpm~5000rpm behind the adding metal melt stirs 5min.~15min.; 4. the whipping agent dispersed with stirring time is 10s~100s, and speed is 2000rpm~5000rpm; The time of 5. continue stirring foaming is 10s~100s, stirring velocity 500rpm~2000rpm, stir blowing temperature than aluminum or aluminum alloy temperature of fusion low 10 ℃~20 ℃; 6. the thermal insulation foaming temperature is identical with the stirring blowing temperature, and the thermal insulation foaming time is 30s~200s.
CN2007100664464A 2007-12-12 2007-12-12 Preparation method of small pore diameter foamed aluminium Expired - Fee Related CN101182608B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007100664464A CN101182608B (en) 2007-12-12 2007-12-12 Preparation method of small pore diameter foamed aluminium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007100664464A CN101182608B (en) 2007-12-12 2007-12-12 Preparation method of small pore diameter foamed aluminium

Publications (2)

Publication Number Publication Date
CN101182608A true CN101182608A (en) 2008-05-21
CN101182608B CN101182608B (en) 2010-06-16

Family

ID=39448034

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007100664464A Expired - Fee Related CN101182608B (en) 2007-12-12 2007-12-12 Preparation method of small pore diameter foamed aluminium

Country Status (1)

Country Link
CN (1) CN101182608B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838754A (en) * 2010-05-28 2010-09-22 昆明理工大学 Method for preparing foamed aluminum/aluminum alloy by foaming through zinc evaporation
CN101838753A (en) * 2010-05-28 2010-09-22 昆明理工大学 Method for preparing foamed aluminum/aluminum alloy by evaporation foaming of magnesium
CN103667764A (en) * 2013-12-30 2014-03-26 昆明理工大学 Preparation method of zinc-aluminum alloy foam
CN105385874A (en) * 2015-10-26 2016-03-09 昆明理工大学 Melt continuous foaming preparing method for small-diameter foamed aluminum
CN106399737A (en) * 2016-09-14 2017-02-15 郑州峰泰纳米材料有限公司 Preparation method of small-aperture foamed aluminium
CN107217177A (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 aluminium prefabricated board and attaching method thereof
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
CN107245611A (en) * 2017-06-19 2017-10-13 界首市中源汽车修造有限公司 A kind of automobile foam aluminium plate and its foam process
CN107675015A (en) * 2017-10-11 2018-02-09 中国民航大学 A kind of closed pore CNTs/Al Si composite foam materials and preparation method thereof
CN107760905A (en) * 2017-10-23 2018-03-06 江苏大学 A kind of ZrB2The preparation method of particle reinforced aluminum foam/aluminium alloy
CN112355239A (en) * 2020-11-03 2021-02-12 中信戴卡股份有限公司 Preparation method of foamed aluminum special-shaped part

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773302A (en) * 2012-08-03 2012-11-14 广西大学 Continuous preparation method for foamed aluminum rod
CN107442770B (en) * 2017-08-31 2019-03-08 安徽青花坊瓷业股份有限公司 A kind of preparation process and its application of the aluminium powder that foams

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838754A (en) * 2010-05-28 2010-09-22 昆明理工大学 Method for preparing foamed aluminum/aluminum alloy by foaming through zinc evaporation
CN101838753A (en) * 2010-05-28 2010-09-22 昆明理工大学 Method for preparing foamed aluminum/aluminum alloy by evaporation foaming of magnesium
CN101838754B (en) * 2010-05-28 2013-01-16 昆明理工大学 Method for preparing foamed aluminum/aluminum alloy by foaming through zinc evaporation
CN103667764A (en) * 2013-12-30 2014-03-26 昆明理工大学 Preparation method of zinc-aluminum alloy foam
CN105385874B (en) * 2015-10-26 2017-04-12 昆明理工大学 Melt continuous foaming preparing method for small-diameter foamed aluminum
CN105385874A (en) * 2015-10-26 2016-03-09 昆明理工大学 Melt continuous foaming preparing method for small-diameter foamed aluminum
CN106399737A (en) * 2016-09-14 2017-02-15 郑州峰泰纳米材料有限公司 Preparation method of small-aperture foamed aluminium
CN107217177A (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 aluminium prefabricated board and attaching method thereof
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
CN107245611A (en) * 2017-06-19 2017-10-13 界首市中源汽车修造有限公司 A kind of automobile foam aluminium plate and its foam process
CN107245611B (en) * 2017-06-19 2018-06-19 界首市中源汽车修造有限公司 A kind of automobile foam aluminium plate and its foam process
CN107675015A (en) * 2017-10-11 2018-02-09 中国民航大学 A kind of closed pore CNTs/Al Si composite foam materials and preparation method thereof
CN107760905A (en) * 2017-10-23 2018-03-06 江苏大学 A kind of ZrB2The preparation method of particle reinforced aluminum foam/aluminium alloy
CN112355239A (en) * 2020-11-03 2021-02-12 中信戴卡股份有限公司 Preparation method of foamed aluminum special-shaped part

Also Published As

Publication number Publication date
CN101182608B (en) 2010-06-16

Similar Documents

Publication Publication Date Title
CN101182608B (en) Preparation method of small pore diameter foamed aluminium
CN102002607B (en) Method for preparing foamed aluminum by foaming melt
CN100439526C (en) Foamed aluminium and aluminum alloy tackifying foaming preparation method
CN103757459B (en) A kind of technique preparing small pore diameter foamed aluminium without tackifying fusant foaming
CN104263988B (en) A kind of TiB2the preparation method of particle reinforced aluminum foam/aluminium alloy
CN106435283A (en) Rare earth high-strength foam aluminum prepared through melt foaming method and preparation process of rare earth high-strength foam aluminum
CN103320637B (en) A kind of Light high-strength closed-cell foam aluminium alloy and preparation method thereof
CN104711446A (en) Foamed aluminum preparation technology
CN105642671A (en) Preparation method of sandwich board with aluminium alloy foam core
Nakajima Porous metals with directional pores
CN102492866A (en) Method for preparing closed-cell aluminum foam under combined action of electromagnetic stirring and mechanical stirring
CN105385874B (en) Melt continuous foaming preparing method for small-diameter foamed aluminum
CN100439525C (en) Process for preparing foam magnesium by direct foaming of melt mass
CN111515395A (en) Foam metal with hierarchical pore structure, preparation method thereof and sound absorption and noise reduction material
CN106222470A (en) A kind of preparation method of foam aluminium alloy
CN1058057C (en) Process for preparing foam metal aluminium and its alloy
CN1644723A (en) Production of foamed aluminosilicate alloy material with controllable density and aperture
CN102618744B (en) Preparation method for clean foam magnesium in bionic field
CN110079694B (en) Coated foaming agent, preparation method thereof and preparation method of foamed aluminum
CN104694777A (en) Porous aluminum-magnesium alloy preparation method
Sarajan et al. Foaming of Al-Si by TiH2
CN1058058C (en) Process for preparing adjustable foam size foamed aluminium
CN103667764B (en) A kind of preparation method of zinc-aluminum alloy foam
CN107511482B (en) A method of foam metal is prepared by coke composite foamable agent
CN110093527A (en) A kind of preparation method of high intensity polyhedron shape pore structure closed-cell aluminum foam

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100616

Termination date: 20121212