CN104404287B - A kind of process using foamed ceramics auxiliary to produce foamed aluminium - Google Patents
A kind of process using foamed ceramics auxiliary to produce foamed aluminium Download PDFInfo
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- CN104404287B CN104404287B CN201410651600.4A CN201410651600A CN104404287B CN 104404287 B CN104404287 B CN 104404287B CN 201410651600 A CN201410651600 A CN 201410651600A CN 104404287 B CN104404287 B CN 104404287B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 59
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000004411 aluminium Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000005187 foaming Methods 0.000 claims abstract description 12
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 11
- 239000008187 granular material Substances 0.000 claims abstract description 11
- 239000004088 foaming agent Substances 0.000 claims abstract description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910000048 titanium hydride Inorganic materials 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052573 porcelain Inorganic materials 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 18
- 239000002245 particle Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000007667 floating Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 235000013361 beverage Nutrition 0.000 description 2
- 239000003462 bioceramic Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910003465 moissanite Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 208000008454 Hyperhidrosis Diseases 0.000 description 1
- 108700001237 Nucleic Acid-Based Vaccines Proteins 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 241000700605 Viruses Species 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 208000013219 diaphoresis Diseases 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000013335 mesoporous material Substances 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
- 230000004089 microcirculation Effects 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 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
- 239000010865 sewage Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000010099 solid forming Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Patent of the present invention discloses a kind of process using foamed ceramics auxiliary to produce foamed aluminium.Make certain size, density, the foamed ceramic granule of porosity, simultaneously by TiH used by foamed ceramic granule and foamed aluminium2Blowing agent powder mixes, and powder fully incorporates in the hole of foamed ceramics.During producing foamed aluminium, the ceramic particle speckling with blowing agent powder is simultaneously introduced in aluminum solutions with blowing agent powder, can preferably improve foaming process.Method proposed by the invention, utilizes foamed ceramics high intensity, dystectic characteristic as additive, improves the mechanical performance of foamed aluminium material itself.Meanwhile, the foaming agent in foamed ceramics granule relies on ceramic particle outwards to produce gas, coarse outside ceramic particle, self has certain gravity simultaneously, is therefore difficult to float, and has driven tiny bubble to be around difficult to float.Solve conventional melt foaming to produce Aluminum Foam bubble floating and cause the uneven problem of porosity.
Description
Technical field:
The invention belongs to metal material processing technology field, particularly relate to a kind of work using foamed ceramics auxiliary to produce foamed aluminium
Process.
Background technology:
Foamed aluminium is after addition additive, to form through foam process, have metal concurrently gentle simultaneously in pure aluminum or aluminum alloy
Bubble feature.It has that density is little, high-selenium corn impact capacity is strong, high temperature resistant, fire protecting performance is strong, anticorrosive, sound insulation and noise reduction, lead
The features such as heating rate is low, electromagnetic wave shielding is high, weatherability is strong, on space flight naval vessel, automobile collision preventing, road sound insulation, Building Fire Protection etc.
Field is applied.
The energy-absorbing of foamed aluminium has good speed emergent property, i.e. strain rate is the biggest, unit volume foamed aluminium institute energy
The energy absorbed is the biggest, reaches as high as 8～30J/cm3.This performance of foamed aluminium so that it is become optimal energy-absorbing,
Crashproof and explosion-proof lamp.At present, the big factory of automobile such as benz, BMW and Honda is at automobile buffer beam, A post, B post etc.
Use foamed aluminium material, for the anti-collision energy absorption of car body.The internal-security forces that Korea S sends this year, its military camp material therefor is also
It is foamed aluminium, is used for preventing stray bullet and sniper's shot etc..In China's recent Xinjiang peace-keeping operations, also it is equipped with foamed aluminium military camp for army,
And it is equipped with foamed aluminium protective plate for troop transporter.
In foamed aluminium traditional preparation methods, foam melt method technique is as follows: add viscosifier in aluminum liquid, after stirring
Add foaming agent, put into and the mould of uniform temperature carries out foaming form.Its concrete tool parameters is: viscosifier use calcium
Grain, the viscosity of melt is had a significant impact by its interpolation temperature, and temperature more high viscosity is the biggest, adds the stirring of 2%Ca grains at 660 DEG C
10min can obtain suitable flux foaming viscosity.The mixing effect of hinge paddle type stirrer is preferable, uses addition limit, limit to improve
The method of rotating speed is added TiH2 and is prone to be uniformly dispersed foaming agent.Selecting granularity is that 74 μm TiH2 granules can obtain higher hole
The foam of gap rate.Titantium hydride addition is preferably 1.0～1.6% scope, and blowing temperature selects 620～630 DEG C of scopes, the type of cooling
Natural slow cooling in atmosphere, and make foaming bath temperature degree higher than melt 10 DEG C.Different-thickness 500mm × 1000mm can be realized
The preparation of the aluminum alloy foam aluminium plate of × X.
The development of foam ceramic material starts from 20 century 70s, is a kind of porous material with hot properties.Its
Aperture is from nanoscale to micron order, and the porosity is between 20%～95%, and using temperature is room temperature～1600 DEG C.Foam is made pottery
Porcelain can be generally divided into two classes, i.e. perforate (netted) ceramic material and closed pore ceramic material, and whether this depends on each hole
There is solid wall surface.If the solid forming foams is only contained in the rib of hole, the most referred to as open-celled ceramic material, its hole
It is interconnected；If there is solid wall surface, then foams are referred to as closed pore ceramic material, and hole therein is by continuous print pottery
Matrix mutually separates.But not only there is perforate hole but also there is a small amount of closed cell in major part foamed ceramics.In general hole is straight
Footpath less than 2nm for poromerics；Hole between 2～50nm for mesoporous material；Hole at more than 50nm for grand
Porous materials.
The application of foamed ceramics starts from 19 century 70s, was merely used as uranium at that time and purifies material and bacteriological filter material.
Along with the continuous expansion of foamed ceramics range, its application the most gradually expands, the fields such as filtration, thermal technology gradually extend
To heat insulation, sound-absorbing, electronics, photoelectricity, sensing, environmental organism and chemical field.It is resistance to that 1 microporous membrane ceramic separation film is had
The advantage such as soda acid, resistant to corrosion, high temperature resistant, aging resistance, length in service life has been recognized by people, and is developed and is applied to food
Many fields such as industry, biochemical industry, energy project, environmental project, electronic technology.Along with the development of material science, nanometer
The level preparation of inorganic porous membrane and be applied to the focus into people's research.The 2 a lot of R&D institutions of biomaterial are all being devoted to porous
The research of hydroxyl apatite bioceramic material.Porous hydroxyapatite is prepared by the method adding pore creating material and making foamed ceramics
Bioceramic, its hole being interconnected is conducive to the microcirculation of tissue fluid, promotes infiltration and the growth of cell.The bubble developed
Foam ceramic hydroxyapatite artificial bone and ocular prosthesis have been used to clinical experiment, cause medical circle and the concern of material educational circles.3 foods
Product, health industry foam ceramic material foamed ceramics owing to having high temperature resistant, corrosion-resistant and good biology, chemical characteristic,
Thus can be used for the concentration of biological active substances, separation, the essences such as the enzyme in medical industry, virus, vaccine, nucleic acid, protein
System etc..In food, beverage industry, it is particularly well-suited to the beverage high to color requirement and the filtration of low drinks, and
It is expected in the production of medicated beer, play huge effect.4 environmentally conscious materialses are along with the development of modern industry, and all trades and professions are aborning
Harmful gas and the waste water of discharge also get more and more, if dealt with improperly, will have a strong impact on the living environment of the mankind, so ring
Border protection becomes the theme in epoch.Foamed ceramics has had for a long time in the application of vehicle catalytic converter.Deodorization foam is made pottery
Porcelain catalyst converter can make the catalysis burning of organic solvent in waste water, foul gas, reaches the purpose that deodorization purifies.Use high temperature resistant and have
The high osmosis foamed ceramics of the thermal shock resistance of sufficient intensity can effectively remove high-temperature dusty gas.During municipal sewage treatment,
Foam ceramic material also becomes Air Exposure material therefor.5 heat-barrier material foamed ceramicses have that pyroconductivity is low, thermal shock resistance
The characteristic such as excellent, is a kind of preferably heat proof material.The typical heat proof material made by foamed ceramics is heat resisting brick, and its material has
Zr02, SiC, magnesium salt and calcium salt etc., use temperature to be up to 1600 DEG C, be the most best heat-barrier material, " the most super
Adiabator ", be applied to the heat insulation of space shuttle shell and guided missile head forces diaphoresis etc..
Summary of the invention:
In order to solve problem above, the present invention proposes a kind of process using foamed ceramics auxiliary to produce foamed aluminium.
Make certain size, density, the foamed ceramic granule of porosity, simultaneously by TiH used by foamed ceramic granule and foamed aluminium2Send out
Infusion powder mixes, and powder fully incorporates in the hole of foamed ceramics.During producing foamed aluminium, blowing agent powder will be speckled with
The ceramic particle at end and blowing agent powder are simultaneously introduced in aluminum solutions, can preferably improve foaming process.
Foamed ceramics used is aluminium oxide ceramics, ZrO2, SiC, silicon nitride, one or several in boride foamed ceramics
Kind, ceramic production methods is the one or several in foaming, melt gel method, interpolation pore creating material method, organic precursor infusion process
Kind.
Foamed ceramics used, its porosity is between 20%～95%, and heat resisting temperature is more than 1400 DEG C, and pore size is
More than the grand hole of 50nm, usually 0.1～2mm.Ceramic particle size is between 1～20mm.
Speckle with TiH2The foamed ceramics of blowing agent powder can be individually added into molten aluminium alloy, or and TiH2Foaming agent is together
Add.Added foamed ceramics and TiH2The ratio of foaming agent is 10:1～1:10, stirs after addition, and mixing time is 1～5 point
Clock, temperature retention time is 3～10 minutes.
Beneficial effect:
Method proposed by the invention, utilizes foamed ceramics high intensity, dystectic characteristic as additive, improves bubble
The mechanical performance of foam aluminum itself.Meanwhile, the foaming agent in foamed ceramics granule relies on ceramic particle outwards to produce gas, pottery
Outside porcelain granule coarse, self there is certain gravity simultaneously, be therefore difficult to float, driven tiny bubble to be around difficult to float.
Solve conventional melt foaming to produce Aluminum Foam bubble floating and cause the uneven problem of porosity.To sum up, institute of the present invention
The method proposed, can obtain mechanical performance more preferably, density foamed aluminium material evenly, be to current flux foaming foam
The effective improvement of one that aluminum produces.
Detailed description of the invention:
For the present invention is better described, it is simple to understand technical scheme, the typical but non-limiting reality of the present invention
Under executing such as.
Foamed ceramics used is aluminium oxide ceramics, and ceramic production methods is foaming.
Foamed ceramics used, its porosity is 90%0, and heat resisting temperature is more than 1400 DEG C, and pore size is 0.2mm.
Ceramic particle size is between 4～6mm.
Speckle with TiH2The foamed ceramics of blowing agent powder and TiH2Foaming agent together adds aluminium alloy solution.Added foam
Pottery and TiH2The ratio of foaming agent is 1:1, stirs after addition, and mixing time is 3 minutes, and temperature retention time is 5 minutes.
Produced aluminum foam product, its porosity is 90%, and mean air bubble diameter is in the mistake of 1mm, porosity and density
Difference scope is within ± 3%.
Applicant states, above content is to combine concrete preferred implementation further description made for the present invention,
It cannot be assumed that the present invention be embodied as be confined to these explanations.General technical staff of the technical field of the invention is come
Say, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, all should be considered as belonging to this
Bright protection domain.
Claims (4)
1. one kind use foamed ceramics auxiliary produce foamed aluminium process, it is characterised in that: make certain size, density,
The foamed ceramic granule of porosity, simultaneously by TiH used by foamed ceramic granule and foamed aluminium2Blowing agent powder mixes,
Powder fully incorporates in the hole of foamed ceramics, during producing foamed aluminium, will speckle with the pottery of blowing agent powder
Porcelain granule and blowing agent powder are simultaneously introduced in aluminum melt, can preferably improve foaming process.
2. according to a kind of process using foamed ceramics auxiliary to produce foamed aluminium described in right 1, it is characterised in that: institute
It is aluminium oxide ceramics, ZrO with foamed ceramics2, SiC, silicon nitride, one or more in boride foamed ceramics,
Ceramic production methods is the one in foaming, melt gel method, interpolation pore creating material method, organic precursor infusion process
Or it is several.
3. according to a kind of process using foamed ceramics auxiliary to produce foamed aluminium described in right 1, it is characterised in that: institute
With foamed ceramics, its porosity is between 20%～95%, and heat resisting temperature is more than 1400 DEG C, and pore size is
0.1-2mm, foamed ceramics chip size is between 1-20mm.
4. according to a kind of process using foamed ceramics auxiliary to produce foamed aluminium described in right 1, it is characterised in that: it is stained with
There is TiH2The foamed ceramics of blowing agent powder can be individually added into molten aluminium alloy, or and TiH2Foaming agent together adds,
Added foamed ceramics and TiH2The ratio of foaming agent is 10:1～1:10, stirs after addition, and mixing time is 1～5
Minute, temperature retention time is 3～10 minutes.
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| CN107326224A (en) * | 2017-07-10 | 2017-11-07 | 何新桥 | Suitable for highway or resistance to compression anti-trapping board marshy and its manufacture method |
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| CN107858540A (en) * | 2017-10-25 | 2018-03-30 | 界首市菁华科技信息咨询服务有限公司 | A kind of even foaming and combination process of the light composite material of hard |
| CN107891150B (en) * | 2017-10-25 | 2020-04-21 | 界首市菁华科技信息咨询服务有限公司 | Casting process of novel low-cost ultrathin light high-strength shockproof wallboard material |
| CN107893168A (en) * | 2017-10-25 | 2018-04-10 | 孟婷婷 | A kind of composite foamed sheet material that can be used as construction wall |
| CN107855500A (en) * | 2017-10-25 | 2018-03-30 | 界首市菁华科技信息咨询服务有限公司 | A kind of casting technique of the composite foamed new material of effective energy-absorbing |
| CN107855499A (en) * | 2017-10-25 | 2018-03-30 | 孟婷婷 | Pin-connected panel large foamed aluminum plate and its processing method |
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| CN107891151B (en) * | 2017-10-25 | 2020-04-21 | 界首市菁华科技信息咨询服务有限公司 | Foam metal foaming process |
| CN108517976A (en) * | 2018-03-20 | 2018-09-11 | 孟婷婷 | Heat-insulation broken bridge type foamed aluminium outer wall composite board |
| CN108715981B (en) * | 2018-05-29 | 2019-11-19 | 界首万昌新材料技术有限公司 | A kind of chair lift back support foamed aluminium and preparation method thereof |
| CN110185491A (en) * | 2019-07-08 | 2019-08-30 | 河南工程学院 | A kind of coal mine escape capsule cabin |
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| ATE208435T1 (en) * | 1997-08-30 | 2001-11-15 | Honsel Gmbh & Co Kg | ALLOY FOR PRODUCING METAL FOAM BODIES USING A POWDER WITH NUCLEAR-FORMING ADDITIVES |
| CN1075562C (en) * | 1998-12-25 | 2001-11-28 | 北京航空材料研究院 | Foamed silicon carbide particle reinforced aluminium base composite material and its producing technology |
| CN103352134A (en) * | 2013-06-27 | 2013-10-16 | 天长市京发铝业有限公司 | Melt-foaming preparation method of foamed aluminum material |
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| CN107326224A (en) * | 2017-07-10 | 2017-11-07 | 何新桥 | Suitable for highway or resistance to compression anti-trapping board marshy and its manufacture method |
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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: Technological method of employing foamed ceramics for auxiliary production of foamed aluminum Effective date of registration: 20181116 Granted publication date: 20170104 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: 20170104 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: Technological method of employing foamed ceramics for auxiliary production of foamed aluminum Effective date of registration: 20200408 Granted publication date: 20170104 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: 20170104 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 |