CN108115143A - A kind of preparation method of ultrafiltration device - Google Patents
A kind of preparation method of ultrafiltration device Download PDFInfo
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- CN108115143A CN108115143A CN201711403731.0A CN201711403731A CN108115143A CN 108115143 A CN108115143 A CN 108115143A CN 201711403731 A CN201711403731 A CN 201711403731A CN 108115143 A CN108115143 A CN 108115143A
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- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 230000003647 oxidation Effects 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000007654 immersion Methods 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 14
- 229910000838 Al alloy Inorganic materials 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 238000007750 plasma spraying Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 238000007751 thermal spraying Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 abstract description 6
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 2
- 150000004706 metal oxides Chemical class 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- 239000002131 composite material Substances 0.000 description 6
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 5
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 5
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 5
- 239000001099 ammonium carbonate Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
- B01D39/2051—Metallic foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0668—The layers being joined by heat or melt-bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1216—Pore size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/241—Chemical after-treatment on the surface
- B22F2003/242—Coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Coating By Spraying Or Casting (AREA)
- Filtering Materials (AREA)
Abstract
The present invention relates to the present invention relates to the shaping of metal material and field of surface treatment.A kind of preparation method of claimed ultrafiltration device, uses low melting point, light-weight metal powder as raw material, and porous light metal product is prepared by PM technique；Immersion oxidation is carried out to it again, by all open hole surface (part that can be contacted with liquid or gas) uniform aluminas of porous simple metal product into corrosion resistant metal oxide, it realizes metal surface ceramic, forms the Novel super-thin filter element of a kind of high intensity, lightweight, corrosion-resistant, free from extraneous odour, low cost.
Description
Technical field
The present invention relates to the present invention relates to the shaping of metal material and field of surface treatment.
Background technology
Common filtering material includes ceramic material, metal material, macromolecule material currently on the market.Wherein, pure ceramics
Filtering material is widely applied filtering material in the market, have stable chemical performance, wear-resisting property it is good, for food service industry mistake
The features such as filtering free from extraneous odour, easy cleaning, but also has brittleness big, and impact resistance ability is low, and machine-shaping difficulty is big, than it is great the shortcomings of.
Simple metal filtering material is mostly used the refractory metals such as steel alloy, titanium alloy, generally big with weight, of high cost, not corrosion-resistant etc.
Shortcoming.Macromolecule filter material mechanical strength is not high, wears no resistance, poor chemical stability.A kind of cost of market in urgent need is lower, effect
It can higher filtering material.In order to solve the above technical problems, the present invention comes therefrom.
The content of the invention
To solve the above problems, the present invention provides a kind of ultrafiltration devices and preparation method thereof.The present invention is using low
Fusing point, light-weight metal powder are raw material, and porous light metal product is prepared by PM technique；Immersion oxygen is carried out to it again
Change, by all open hole surface (part that can be contacted with liquid or gas) uniform aluminas of porous simple metal product into corrosion resistant
The metal oxide of erosion realizes metal surface ceramic, forms a kind of high intensity, lightweight, corrosion-resistant, free from extraneous odour, low cost
Novel super-thin filter element.According to actual demand, can select to spray certain grain size in above-mentioned ultrafiltration device article surface
Ceramic powder, achieve the effect that further to be precisely controlled surface filtration aperture.The technique of ultrafiltration device provided by the invention
Simply, it is at low cost, it is easy to industrialization.
A kind of preparation method of ultrafiltration device provided by the invention, is as follows：
(1) using the M metal powders of D1 grain sizes as raw material, by compression molding and sintering, porous simple metal material is obtained, is made
For internal layer；
(2) using the M metal powders of D2 grain sizes as raw material, in above-mentioned porous simple metal outer material surface compression molding and burning
Knot, obtains porous simple metal product, as transition zone；
(3) immersion oxidation processes are carried out to above-mentioned porous simple metal product, make all open holes surface of internal cavity (with
The part of oxidation solution contact) one layer of fine and close oxide-film is equably formed in situ, it realizes metal surface ceramic, obtains comprising two
The ultrafiltration device of layer porous material；
(4) in order to be precisely controlled the surface filtration aperture of filter element, using spraying technology, by the M metals of D3 grain sizes
Oxide powder is sprayed on the transition layer surface that (3) state ultrafiltration device, obtains nano ceramics filter layer, as outer layer, i.e.,
Obtain the super Fine filter elements being distributed by internal layer outer layers bore diameter gradient.
Preferably, the M metal powders be selected from have low melting point, low-gravity simple metal material or its alloy, including but not
It is limited to fine aluminium, pure magnesium, aluminium alloy or magnesium alloy.
Preferably, the grain size of the metal powder is 20nm~500 μm.
Preferably, the shape of the porous simple metal product can be disc type, tubular type, board-like etc..
Preferably, in the multilayered structure of the porous simple metal product, the uniform pore diameter of same layer is consistent, by internal layer outside
Layer bore diameter gradient becomes smaller, i.e. D3<D2<D1, wherein D1 are 750nm~500 μm, and D2 is 120nm~80 μm, and D3 is the μ of 20nm~15
m。
Preferably, the thickness of the nano ceramics filter layer of the ultrafiltration device is 10~20 μm, pore size filter 100
~2000nm.
Preferably, the method for the immersion oxidation processes (metal surface ceramic), including but not limited to chemical oxidation,
Anodic oxidation, differential arc oxidation etc..
Preferably, the thickness of the nano ceramics filter layer is 1~20 μm, and pore size filter is 5~200nm.
Preferably, the spraying technology includes but not limited to thermal spraying, plasma spraying etc..
Preferably, the thickness of the nano ceramics filter layer is 1~20 μm, and pore size filter is 5~200nm.
Preferably, the spraying technology includes but not limited to hot spray process, plasma spraying method etc..
Compared with prior art, the advantage of the invention is that：
Compared with tradition using refractory metal as the metallic filter material production technology of raw material, the present invention using low melting point,
Light-weight metal powder be raw material, can under lower temperature, pass through powder metallurgy forming, low cost prepare lightweight, high intensity, high-ductility
The porous simple metal product of property.
Secondly, it is compound using the metal powder lamination of different-grain diameter, it is sintered by powder metallurgy, below melting point metal temperature
Shaping forms the porous simple metal product that bore diameter gradient reduces from inside to outside.
3rd, by carrying out immersion oxidation to porous simple metal product, make the surface of internal cavity of all open holes (with oxygen
Change the part of liquid contact) one layer of fine and close oxide-film is equably formed in situ, it realizes metal surface ceramic, assigns porous proof gold
Belong to product and the equal chemical stability of ceramic objects, acid and alkali resistance, the corrosion of salt, heat；Meanwhile solves pure ceramic filter material
The brittleness of material is big, and impact resistance is low, and machine-shaping difficulty is big, than great grade application difficult point.
4th, in order to be precisely controlled the surface filtration aperture of ultrafiltration device, may be selected in above-mentioned ultrafiltration device
Surface uses spraying technology, is coated with one layer of nano ceramics filter layer with basis material phase same material.
Description of the drawings
The porous simple metal product multilayered structure schematic diagrames of Fig. 1；
Fig. 2 porous metals surface ceramic deposition schematic diagrames；
Fig. 3 A ultrafiltration device section microstructures；
Fig. 3 B ultrasound fine filtrator part section microstructures (schematic diagram)；
Wherein 1 is metallic particles internal layer, and 2 be metallic particles outer layer；10 be aluminium alloy, and 20 be surface alumina oxide；3 be nanometer
Ceramic filter layer.
Specific embodiment
Said program is described further below in conjunction with specific embodiment.It is to be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Embodiment 1
Using LY12 aluminium alloys：Powder P1, average grain diameter 500nm and powder P2, average grain diameter 150nm, by above-mentioned aluminium
Alloy respectively with PEG, stearic acid, by 98.4：0.6：1 mass ratio is uniformly mixed, and obtains P1 composite powders and P2 composite powders.
Type is made in secondary mould pressing shaping, obtains internal diameter 100mm, internal layer is made of P1 composite powders, thickness 5mm；Outer layer is by P2
Composite powder composition, the porous Al alloy product of 20 μm of thickness, as shown in Figure 1.
By above-mentioned porous Al alloy screen pipe, make through oil removal treatment, then with the boric acid solution of sodium sulfite and potassium hydroxide
For electrolyte, above-mentioned aluminium alloy screen pipe is totally immersed into electrolyte as anode, metallic lead immerses electrolyte as cathode, electricity
Current density is 60A/dm2, conduction time 20min, porous Al alloy screen pipe all open holes surface of internal cavity (with oxygen
Change the part of liquid contact) in situ fine and close oxide-film is formed uniformly to get to the ultrafiltration device of aluminum alloy surface ceramic
(Fig. 2).
After testing, the filtering of gained porous Al alloy inner tube layer aperture about 130nm, surface filtration layer aperture about 40nm.Anode
Porous aluminium surface after oxidation processes forms Al2O3 ceramic layers, has hardness height (HV>1200), strong (the CASS salt fogs examination of corrosion resistance
It tests>480h), (film hinders good insulating>100M Ω) the advantages that, it is suitable for the filtering of nano powder slurry extensively.
Embodiment 2
It is 80 according to the ratio of alumina powder and ammonium hydrogen carbonate：20 weigh raw material, and wherein alumina powder is spherical average grain
Footpath is 60nm, and ammonium hydrogen carbonate average grain diameter is 15nm.Alumina powder and ammonium hydrogen carbonate powder in argon gas atmosphere are subjected to ball milling, obtained
The composite granule uniformly dispersed to alumina powder and ammonium hydrogen carbonate powder.Then under protection of argon gas, using plasma spraying technology,
Above-mentioned composite granule is sprayed at the ultrafiltration device article surface that embodiment 1 obtains repeatedly, 1h is then stood in boiling water,
After ammonium bicarbonate solubility departs from, the aluminium oxide nano ceramic filter layer of one layer of even compact is obtained in 1 article surface of embodiment
(Fig. 3) filters bore dia about 10nm, and porosity is about 38%.
The technical concepts and features of example only to illustrate the invention are stated, its object is to person skilled in the art is allowed to be energy
Solution present disclosure much of that is simultaneously implemented according to this, and it is not intended to limit the scope of the present invention.It is all spiritual according to the present invention
The equivalent transformation or modification that essence is done, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of ultrafiltration device, which is characterized in that it includes following preparation process：
(1) using the M metal powders of D1 grain sizes as raw material, by compression molding and sintering, porous simple metal material is obtained, as interior
Layer；
(2) using the M metal powders of D2 grain sizes as raw material, by compression molding and sintering, one layer is prepared not in above-mentioned internal layer surface
With the porous simple metal material in aperture, as transition zone to get to double-deck porous simple metal product；
(3) immersion oxidation processes are carried out to above-mentioned porous simple metal product, makes surface of internal cavity and the oxidation of all open holes
The part of liquid contact is equably formed in situ one layer of fine and close oxide-film, realizes metal surface ceramic；
(4) in order to be precisely controlled the surface filtration aperture of filter element, using spraying technology, by the oxidation of the M metals of D3 grain sizes
Object powder is sprayed on the transition layer surface that (3) state ultrafiltration device, obtains nano ceramics filter layer, as outer layer to get to
The super Fine filter elements being distributed by internal layer outer layers bore diameter gradient.
A kind of 2. preparation method of ultrafiltration device according to claim 1, which is characterized in that the M metal powders
Selected from low melting point, lightweight simple metal or its alloy.
A kind of 3. preparation method of ultrafiltration device according to claim 1, which is characterized in that the M metal powders
Selected from fine aluminium, pure magnesium, aluminium alloy or magnesium alloy.
4. the preparation method of a kind of ultrafiltration device according to claim 1, which is characterized in that the metal powder
Grain size is 20nm~500 μm.
A kind of 5. preparation method of ultrafiltration device according to claim 1, which is characterized in that the porous simple metal
The shape of product is disc type, tubular type, board-like etc..
A kind of 6. preparation method of ultrafiltration device according to claim 1, which is characterized in that the porous simple metal
In the multilayered structure of product, the uniform pore diameter of same layer is consistent, is become smaller by internal layer to outer layer bore diameter gradient, i.e. D3<D2<D1,
Middle D1 is 750nm~500 μm, and D2 is 120nm~80 μm, and D3 is 20nm~15 μm.
A kind of 7. preparation method of ultrafiltration device according to claim 1, which is characterized in that the ultrafilter
The thickness of the nano ceramics filter layer of part is 10~20 μm, and pore size filter is 100~2000nm.
A kind of 8. preparation method of ultrafiltration device according to claim 1, which is characterized in that the immersion oxidation
The method of processing includes but not limited to chemical oxidation, anodic oxidation, differential arc oxidation etc..
A kind of 9. preparation method of ultrafiltration device according to claim 1, which is characterized in that the nano ceramics mistake
The thickness of filtering layer is 1~20 μm, and pore size filter is 5~200nm.
10. a kind of preparation method of ultrafiltration device according to claim 1, which is characterized in that the spraying technology,
Including thermal spraying, plasma spraying.
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|---|---|---|---|
| CN201711403731.0A CN108115143B (en) | 2017-12-22 | 2017-12-22 | Preparation method of filter device |
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|---|---|---|---|
| CN201711403731.0A CN108115143B (en) | 2017-12-22 | 2017-12-22 | Preparation method of filter device |
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| CN108115143A true CN108115143A (en) | 2018-06-05 |
| CN108115143B CN108115143B (en) | 2021-03-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769616A (en) * | 2022-04-07 | 2022-07-22 | 上海交通大学 | Alloy composite layer with gradient change of components and preparation method thereof |
| CN115382303A (en) * | 2022-09-29 | 2022-11-25 | 清源创新实验室 | High-temperature coarse-effect metal porous filtering material for protector of waste incineration process economizer and preparation method thereof |
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|---|---|---|---|---|
| EP0819459A1 (en) * | 1996-07-15 | 1998-01-21 | Kubota Corporation | Sintered metal filters |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114769616A (en) * | 2022-04-07 | 2022-07-22 | 上海交通大学 | Alloy composite layer with gradient change of components and preparation method thereof |
| CN114769616B (en) * | 2022-04-07 | 2024-01-19 | 上海交通大学 | Alloy composite layer with gradient components and preparation method thereof |
| CN115382303A (en) * | 2022-09-29 | 2022-11-25 | 清源创新实验室 | High-temperature coarse-effect metal porous filtering material for protector of waste incineration process economizer and preparation method thereof |
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Denomination of invention: A Preparation Method for Filter Devices Granted publication date: 20210309 Pledgee: Bank of China Limited Changshu branch Pledgor: SUZHOU FIRST ELEMENT NANO TECHNOLOGY CO.,LTD. Registration number: Y2024980011877 |