CN109176830A - A kind of production method of hollow ceramic film - Google Patents
A kind of production method of hollow ceramic film Download PDFInfo
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- CN109176830A CN109176830A CN201810818462.2A CN201810818462A CN109176830A CN 109176830 A CN109176830 A CN 109176830A CN 201810818462 A CN201810818462 A CN 201810818462A CN 109176830 A CN109176830 A CN 109176830A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/44—Producing shaped prefabricated articles from the material by forcing cores into filled moulds for forming hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
- B01D71/025—Aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
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- Dispersion Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a kind of production methods of hollow ceramic film, are process using hollow ceramic film die, have at least one totally enclosed hollow hole inside the hollow ceramic film；The mold includes upper epimorph, lower epimorph and interior model core, the step of the step of the step of the step of the step of the step of specifically comprising the following steps: first time filler, placing core, second of filler, half-dried compression moulding, drying, dumping and sintering, takes out hollow ceramic film finished product after natural cooling cooling.The production method, which solves the production of existing hollow ceramic, cannot make totally-enclosed hollow, and small bore is hollow, the narrow disadvantage of membrane aperture adjustable range, and it is low to compare existing method equipment requirement, simple process small to equipment attrition, high-efficient, the hollow ceramic of production is integrally formed, without the step of being bonded.
Description
Technical field
The present invention relates to a kind of ceramic filter membrane technology more particularly to a kind of production methods of hollow ceramic film.
Background technique
Membrane separation technique is the new of separation, purifying and the concentration for the selection separation function realization feed liquid heterogeneity for utilizing film
Type high efficient separation technology.By feat of characteristic is efficiently separated, film industry is strategic emerging industries by country location, and it is big to obtain policy
Power is supported.Existing ceramic membrane mainly has hollow slab type or tubular membrane, and moulding process generally uses extrusion molding process.Such side
The hollow ceramic film of method production is all the symmetrical structure of both ends aperture, and the later period needs both ends gluing to be sealed, due to using glue
Material sealing is typically necessary even adapter of plastic if there is damaged template and entirely replaces, and replacement cost is caused to increase.
Patent " a kind of forming method of ceramic vacuum filter plate (CN 101816859A) " discloses a kind of hollow filter plate
Production method formed using foamed plastics as mold core using heat pressing process.It needs to vacuumize in the method forming process, simultaneously
Pressurized, heated is needed, relative complex, the high requirements on the equipment is operated, being easily deformed in heating pressurized condition lower mold core leads to inner cavity
Shape is changeable.Patent " vacuum ceramic filter plate and its manufacturing method (CN 101773746A) " uses briquetting process, but handle
Hollow template is divided into two parts compression moulding, is bonded together again with binder after sintering, the method complex procedures, and bonds
There are materials variances, use for a long time may generate defect for agent and ceramic main body." a kind of double wall hollow blade is empty for patent
The preparation method (CN105127373A) of heart ceramic core " discloses a kind of production method of hollow ceramic type core, using carbon dust
With the type core of paraffin injection moulding hollow ceramic, after by carbonization treatment obtain the type core with some strength, recycle pottery
Porcelain wax liquor is injection moulded hollow ceramic, and eventually sintering excludes paraffin and the type core of carbonization obtains hollow ceramic.The method work
Sequence is complicated and has carbonization treatment, and equipment requirement is more, and hollow ceramic lesser for hole sectional area or the sky in slice-shaped hole
Heart ceramics are difficult to make, because type core is easy to squeeze when the small low injection moulding of core strength in interface broken, while the method cannot
The hollow ceramic in completely enclosed hole is made, type core is without supporting point.It is not strong for ceramic membrane forming operation using wax liquor injection, because
The general particle of the powder of ceramic membrane is slightly difficult to be formed big to equipment attrition in stable uniform wax liquor and forming process.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of production methods of hollow ceramic film.
The production method, which solves the production of existing hollow ceramic, cannot make totally-enclosed hollow, and small bore is hollow, and membrane aperture adjustable range is narrow
The shortcomings that, and the method equipment requirement is low before comparison, and, simple process small to equipment attrition is high-efficient, the hollow pottery of production
Porcelain is integrally formed, without the step of being bonded.
The purpose of the present invention adopts the following technical scheme that realization: a kind of production method of hollow ceramic film, using hollow pottery
Porcelain film die is process, and has at least one totally enclosed hollow hole inside the hollow ceramic film；The mold includes upper outer
Shape mould, lower epimorph and interior model core, the upper outer mould are removably mounted on lower outer mould；Upper outer mould and lower outer mould
It is enclosed the type chamber with hollow ceramic film form fit；The shape of the interior model core and the hollow hole shape of hollow ceramic film
Match；
Specifically comprise the following steps:
The step of first time filler: the type for weighing epimorph under half-dried ceramic powder is inserted is intracavitary, and ceramic powder is smeared
It is flat, complete first time filler；
The step of placing core: interior model core is put to ceramic powder surface, which is located at the center of type chamber；
The step of second of filler: the type that half-dried ceramic powder is inserted upper epimorph again is intracavitary, and completion is filled out for the second time
Upper epimorph, is then fixed on lower outer mould by material；
The step of half-dried compression moulding: it opens press and adjusts pressure, upper epimorph is compressed on lower outer mould, is suppressed
Afterwards, the internal hollow ceramic film for having interior model core of ejection, and the internal hollow pottery for having interior model core is shifted with vacuum chuck
On porcelain film to load bearing board；
The step of drying: load bearing board and the internal hollow ceramic film with interior model core are put into baking oven are toasted together；
The step of dumping and sintering: the hollow ceramic film after drying is put into burning kiln, and stage heating, heat preservation make
Interior model core dissolves out stage by stage, forms vacancy in original at model core, takes out hollow ceramic film finished product after natural cooling cooling.
Further, the interior model core is prepared by paraffin, plastics intensive, filler, and the paraffin, plastics add
Strong agent, filler mass ratio be (5~24): (1~3): 1.
Further, the plastics intensive is the mixing of one or more of PP, HDPE, PET, PBT, PS
Object；The filler be graphite, sawdust, walnut sand one or more kinds of mixtures.
Further, the internal model core package includes following steps:
The preparation of slurry: weighing paraffin, the plastics intensive, filler raw material of formula ratio, and heating and melting and stirring is made
The slurry of good fluidity；
Broken step: above-mentioned slurry solid after cooling is placed in crusher the particle for being broken into even thickness；
The step of injection moulding: the interior model core of shape needed for being made of injection molding machine injection moulding.
Further, in broken step, the particle size range of the particle is 2~4mm；In the step of being injection moulded
In, the required shape includes one of cylindric, disc-shaped, flat column, square piece shape, fan leaf sheet, turbine-like or two
Kind or more combination.
Further, in first and second filler the step of, the production of the ceramic powder includes the following steps:
The step of ball milling: weighing ceramic particle aggregate, sintering aid, binder and put into dry ball milling in ball mill jointly,
Prefabricated powder is made；
The step of stirring: taking out prefabricated powder and be put into blender, sprays into water while stirring and stirs 10 minutes, then sprays into profit
It stirs 30 minutes, takes out after lubrication prescription；
Aging step: take out powder, seal aging 24 hours, it is aging after raw material cross sieve, sift out part be obtained
Half-dried press-powder material, the moisture content of the half-dried press-powder material of the control is 5~15%.
Further, in the ball milling the step of, the ceramic particle aggregate is aluminium oxide or silicon carbide；The ceramic particle
Aggregate is made of the different ceramic particle aggregate of two kinds of particles thickness, wherein coarse granule is (5~9) with fine grain mass ratio:
1；Coarse grained partial size is 20~50 μm, and fine grain partial size is 0.5~5 μm；The sintering aid is titanium dioxide, oxidation
The mixture of one or more of copper, chrome green；The binder is one of HPMC, CMC, PVA or two
Kind or more mixture.
Further, in the step of stirring, the additional amount of the water is the 5~20% of prefabricated powder weight；The lubrication
Agent is the 0.5~5% of prefabricated powder weight.
Further, in the step of drying, the temperature of the baking oven is 45~55 DEG C, and baking time is 10~14 small
When.
Further, in the dumping and sintering the step of, the interim heating, heat preservation condition are as follows: press 1.5~2.5
Hour is warming up to 180~220 DEG C and keeps the temperature 8~12 hours；600 DEG C are warming up to by the rate of 1 DEG C/min again, finally with 5 DEG C/min
Rate be warming up to 1400 DEG C keep the temperature 1.5~2.5 hours, after natural cooling cools to 100 DEG C or less, taking-up finished product.
Compared with prior art, the beneficial effects of the present invention are:
(1) this production method production procedure is short, and simple process is high-efficient, and equipment requirement is low, small to equipment attrition, can produce
Completely enclosed integrally formed hollow structure ceramic membrane, solve the production of existing hollow ceramic cannot make it is totally-enclosed hollow, it is small
Cross-section hollow, the narrow disadvantage of membrane aperture adjustable range.
(2) during hollow ceramic film production, using half-dried compression moulding technology, i.e., using semi-wet profit state
Ceramic powder is then pressed into type convenient for the sizing of ceramic powder in upper and lower epimorph, and the requirement of moulding process simple device is low,
Product hollow section size is unrestricted, the aperture of plastic thickness 0.5mm width 1mm, and the product of production is an entirety, subtracts
Few viscose glue process, properties of product are more preferable；
(3) it during hollow ceramic film production, is adjusted by ceramic powder formula, with coarse granule aluminium oxide or carbonization
Silicon is that ceramic skeleton is subject to a small amount of fine grained high purity aluminium oxide or silicon carbide ceramics skeleton and micro sintering aid, because several
Solvent borne raw material is not added, strengthens the acidproof alkali ability of the film of ceramic membrane；
(4) during hollow ceramic film production, using highly viscous binder, while lubricant is added and water stirs jointly
Mixing obtains raw material to be formed, is improved lubricity and the intensity of shaped article when ceramic mold forming all, and reduction product collapses scarce
With the abrasion to equipment.
(5) in making during model core, with paraffin, plastics intensive, filler for interior model core raw material, make type
Core is easy to exclude in the later period.Mainly by reasonably matching and heating and heat preservation mode realizes that internal model is readily removed stage by stage, 70
DEG C cold stage below, paraffin slowly melts and is absorbed in ceramics since moisture evaporates the hole to be formed, at prototype core
Vacancy is formed, plastics soften and expand when temperature reaches 150 DEG C, and paraffin melts out the hole to be formed and gives plastic expansion at this time
Space so that product is not cracked because of plastic expansion.Temperature continues the abjection of the binder in raising type core and product, stage by stage
Melt out a possibility that formation with vacancy reduces product cracking.
(6) in making during model core, type core powder particles size can be deployed arbitrarily so that membrane aperture can be certainly
By adjusting, avoids and pure wax liquor injection moulding slurry is used easily to be layered, aperture adjustment narrow range, easy the defects of blocking up injection port；Together
When reduce equipment investment compared with extrusion molding, reduce raw material to equipment attrition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 3 hollow ceramic film of embodiment；
Fig. 2 is the pictorial diagram of the hollow ceramic film of embodiment 3；
Fig. 3 is the section structure diagram of hollow ceramic membrane in Fig. 2.
In figure: 1, hollow ceramic film；2, interior model core.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
In the present invention, if not refering in particular to, all parts, percentage are unit of weight, used equipment and raw material etc.
It is commercially available or commonly used in the art.Method in following embodiments is unless otherwise instructed the normal of this field
Rule method.
A kind of production method of hollow ceramic film, is process using hollow ceramic film die, inside the hollow ceramic film
With at least one totally enclosed hollow hole；The mold includes upper epimorph, lower epimorph and interior model core, the upper external form
Mould is removably mounted on lower outer mould；Upper outer mould and lower outer mould are enclosed the type with hollow ceramic film form fit
Chamber；The shape of the interior model core and the hollow hole shape of hollow ceramic film match；
Specifically comprise the following steps:
The step of first time filler: the type for weighing epimorph under half-dried ceramic powder is inserted is intracavitary, and ceramic powder is smeared
It is flat, complete first time filler；
The step of placing core: interior model core is put to ceramic powder surface, which is located at the center of type chamber；
The step of second of filler: the type that half-dried ceramic powder is inserted upper epimorph again is intracavitary, and completion is filled out for the second time
Upper epimorph, is then fixed on lower outer mould by material；
The step of half-dried compression moulding: it opens press and adjusts pressure, upper epimorph is compressed on lower outer mould, is suppressed
Afterwards, the internal hollow ceramic film for having interior model core of ejection, and the internal hollow pottery for having interior model core is shifted with vacuum chuck
On porcelain film to load bearing board；
The step of drying: load bearing board and the internal hollow ceramic film with interior model core are put into baking oven are toasted together；
As further embodiment, the temperature of the baking oven is 45~55 DEG C, and baking time is 10~14 hours；
The step of dumping and sintering: the hollow ceramic film after drying is put into burning kiln, stage heating, heat preservation, institute
State the condition of interim heating, heat preservation are as follows: be warming up to 180~220 DEG C by 1.5~2.5 hours and keep the temperature 8~12 hours；1 is pressed again
DEG C/rate of min is warming up to 600 DEG C, is finally warming up to 1400 DEG C with the rate of 5 DEG C/min and keeps the temperature 1.5~2.5 hours, make in
Model core dissolves out stage by stage, forms vacancy in original at model core；After natural cooling cools to 100 DEG C or less, hollow ceramic is taken out
Film finished product.
The internal model core package includes following steps:
The preparation of slurry: weighing paraffin, the plastics intensive, filler raw material of formula ratio, and heating and melting and stirring is made
The slurry of good fluidity；Wherein, the interior model core is prepared by paraffin, plastics intensive, filler, the paraffin, modeling
Expect intensive, the mass ratio of filler is (5~24): (1~3): 1.The plastics intensive is PP, HDPE, PET, PBT, PS
One or more of mixture；The filler is one or more kinds of mixing of graphite, sawdust, walnut sand
Object.
Broken step: above-mentioned slurry solid after cooling is placed in crusher the particle for being broken into even thickness；It is described
The particle size range of particle is 2~4mm；
The step of injection moulding: the interior model core of shape needed for being made of injection molding machine injection moulding.As further
Embodiment, it is described needed for shape include the regular shapes such as cylindric, disc-shaped, flat column, square piece shape or fan leaf sheet,
The combination of one or more of the irregular shapes such as turbine-like.
Wherein, in first and second filler the step of, the production of the ceramic powder includes the following steps:
The step of ball milling: weighing ceramic particle aggregate, sintering aid, binder and put into dry ball milling in ball mill jointly,
Prefabricated powder is made；As further embodiment, the ceramic particle aggregate is aluminium oxide or silicon carbide；The ceramic particle
Aggregate is made of the different ceramic particle aggregate of two kinds of particles thickness, wherein coarse granule is (5~9) with fine grain mass ratio:
1；Coarse grained partial size is 20~50 μm, and fine grain partial size is 0.5~5 μm；The sintering aid is titanium dioxide, oxidation
The mixture of one or more of copper, chrome green；The binder is highly viscous (1 ten thousand to 10 ten thousand viscosity)
The mixture of one or more of HPMC, CMC, PVA.
The step of stirring: taking out prefabricated powder and be put into blender, sprays into water while stirring and stirs 10 minutes, then sprays into profit
It stirs 30 minutes, takes out after lubrication prescription；As further embodiment, the additional amount of the water be prefabricated powder weight 5~
20%；The lubricant is the 0.5~5% of prefabricated powder weight.The lubricant is glycerol, vegetable oil, oleic acid, stearic acid late
One or more kinds of mixtures.
Aging step: take out powder, seal aging 24 hours, it is aging after raw material cross sieve, sift out part be obtained
Half-dried press-powder material, the moisture content of the half-dried press-powder material of the control is 5~15%.
It is specific embodiment of the present invention below, used raw material, equipment etc. remove special limit in the following embodiments
It can be obtained by buying pattern outside fixed.
Embodiment 1: interior model core
The production of interior model core, includes the following steps:
1, the preparation of slurry: weighing paraffin 2400g, and heatable blender is added in PP 150g, HDPE 150g together
In, temperature is set as 180 DEG C and the stirring that is switched on, and paraffin, PP and HDPE slowly melt as the temperature rises.Addition after having melted
300g graphite powder stirs 30 minutes together, pours into pallet and naturally cools to room temperature；
2, it broken step: takes out solid after cooling and is placed in crusher and be broken for evengranular little particle；It is described
The particle size range of particle is 2~4mm；
3, the step of being injection moulded: adjustment injection molding machine temperature and injection pressure, injection molding obtain the type core of turbine-like, such as scheme
Shown in 1.
The half-dried ceramic powder of embodiment 2
The production of half-dried ceramic powder, includes the following steps:
1, the aluminium oxide aggregate 2400g of 200 mesh, 1 micron of aluminium oxide aggregate 600g, fine grained the step of ball milling: are weighed
Intensive of the aluminium oxide aggregate as coarse granule aluminium oxide aggregate, the HPMC 90g of 100,000 viscosity, commercial silica titanium 15g is together
Prefabricated powder is made within dry ball milling 4 hours in investment ball mill；
2, it the step of stirring: takes out prefabricated powder and is added in the blender that can be sprayed water, spray into 300g clean water while stirring
Stirring 10 minutes, then stirred 30 minutes after spraying into 15g vegetable oil, take out powder；
3, aging step: powder seals aging 24 hours；Above-mentioned aging good powder crosses 20 mesh screens, sifts out part and is
Half-dried press-powder material obtained, the moisture content of the half-dried press-powder material of the control are 5~15%.
3 hollow ceramic film of embodiment
The production of hollow ceramic film, includes the following steps:
1, the step of first time filler: the type chamber that half-dried press-powder material made from 150g embodiment 2 inserts lower epimorph is weighed
It is interior, ceramic powder is smoothed out, first time filler is completed；
2, the step of placing core: interior model core made from embodiment 1 is put to ceramic powder surface, the interior model core position
At the center of type chamber；
3, the step of second of filler: the type that half-dried press-powder material made from weighing 170 grams inserts upper epimorph is intracavitary, completes
Then upper epimorph is fixed on lower outer mould by second of filler；
4, the step of half-dried compression moulding: opening press adjustment pressure is 60MPa, and upper epimorph is compressed on lower outer mould
On, after suppressing, the internal hollow ceramic film for having interior model core of ejection, and the hollow ceramic film is shifted in holding with vacuum chuck
It burns on plate；
5, the step of drying: load bearing board and the internal hollow ceramic film with interior model core are put into set temperature together is
It is toasted 12 hours in 50 DEG C of baking oven；
6, dumping and sintering the step of: the product after drying is put into burning kiln, is warming up to 200 DEG C of heat preservations by 2 hours
600 DEG C are warming up to by the rate of 1 DEG C/min again within 10 hours, be finally warming up to 1400 DEG C with the rate of 5 DEG C/min and keep the temperature 2 hours,
It dissolves out interior model core stage by stage, forms vacancy in original at model core 2；Natural cooling is taken out hollow after cooling to 100 DEG C or less
1 finished product of ceramic membrane, as shown in figures 2-3.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of production method of hollow ceramic film, which is characterized in that be process using hollow ceramic film die, the hollow pottery
There is at least one totally enclosed hollow hole inside porcelain film；The mold includes upper epimorph, lower epimorph and interior model core, institute
Outer mould is stated to be removably mounted on lower outer mould；Upper outer mould and lower outer mould are enclosed and hollow ceramic film shape
The type chamber matched；The shape of the interior model core and the hollow hole shape of hollow ceramic film match；
Specifically comprise the following steps:
The step of first time filler: the type for weighing epimorph under half-dried ceramic powder is inserted is intracavitary, and ceramic powder is smoothed out, complete
At first time filler；
The step of placing core: interior model core is put to ceramic powder surface, which is located at the center of type chamber；
The step of second of filler: the type that half-dried ceramic powder is inserted upper epimorph again is intracavitary, completes second of filler, so
Upper epimorph is fixed on lower outer mould afterwards；
The step of half-dried compression moulding: opening press and adjust pressure, upper epimorph is compressed on lower outer mould, after suppressing,
The internal hollow ceramic film for having interior model core of ejection, and the internal hollow ceramic film for having interior model core is shifted with vacuum chuck
To load bearing board；
The step of drying: load bearing board and the internal hollow ceramic film with interior model core are put into baking oven are toasted together；
The step of dumping and sintering: the hollow ceramic film after drying is put into burning kiln, and stage heating, heat preservation make internal model
Type core dissolves out stage by stage, forms vacancy in original at model core, takes out hollow ceramic film finished product after natural cooling cooling.
2. production method as described in claim 1, which is characterized in that the interior model core is by paraffin, plastics intensive, filling
Agent is prepared, the paraffin, plastics intensive, filler mass ratio be (5~24): (1~3): 1.
3. production method as claimed in claim 2, which is characterized in that the plastics intensive is PP, HDPE, PET, PBT, PS
One or more of mixture；The filler is one or more kinds of mixing of graphite, sawdust, walnut sand
Object.
4. production method as claimed in claim 2, which is characterized in that the internal model core package includes following steps:
The preparation of slurry: weighing paraffin, the plastics intensive, filler raw material of formula ratio, and heating and melting simultaneously stirs flowing is made
The good slurry of property；
Broken step: above-mentioned slurry solid after cooling is placed in crusher the particle for being broken into even thickness；
The step of injection moulding: the interior model core of shape needed for being made of injection molding machine injection moulding.
5. production method as claimed in claim 4, which is characterized in that in broken step, the particle size range of the particle
For 2~4mm；In the step of being injection moulded, the required shape includes cylindric, disc-shaped, flat column, square piece shape, fan
The combination of one or more of foliaceous, turbine-like.
6. production method as described in claim 1, which is characterized in that in first and second filler the step of, the ceramic powder
The production of material includes the following steps:
The step of ball milling: weighing ceramic particle aggregate, sintering aid, binder and put into dry ball milling in ball mill jointly, is made
Prefabricated powder；
The step of stirring: taking out prefabricated powder and be put into blender, sprays into water while stirring and stirs 10 minutes, then sprays into lubricant
It stirs 30 minutes, takes out afterwards；
Aging step: taking out powder, seals aging 24 hours, it is aging after raw material cross sieve, sift out part as obtained half
Dry-pressing powder, the moisture content of the half-dried press-powder material of the control are 5~15%.
7. production method as claimed in claim 6, which is characterized in that in the ball milling the step of, the ceramic particle aggregate is
Aluminium oxide or silicon carbide；The ceramic particle aggregate is made of the different ceramic particle aggregate of two kinds of particles thickness, wherein thick
Grain is (5~9) with fine grain mass ratio: 1；Coarse grained partial size is 20~50 μm, and fine grain partial size is 0.5~5 μm；Institute
State the mixture that sintering aid is one or more of titanium dioxide, copper oxide, chrome green；The binder is
The mixture of one or more of HPMC, CMC, PVA.
8. production method as claimed in claim 6, which is characterized in that in the step of stirring, the additional amount of the water is pre-
The 5~20% of powder weight processed；The lubricant is the 0.5~5% of prefabricated powder weight.
9. production method as described in claim 1, which is characterized in that in the step of drying, the temperature of the baking oven is 45
~55 DEG C, baking time is 10~14 hours.
10. production method as described in claim 1, which is characterized in that described interim to rise in the dumping and sintering the step of
Temperature, the condition of heat preservation are as follows: be warming up to 180~220 DEG C by 1.5~2.5 hours and keep the temperature 8~12 hours；The rate of 1 DEG C/min is pressed again
600 DEG C are warming up to, finally 1400 DEG C is warming up to the rate of 5 DEG C/min and keeps the temperature 1.5~2.5 hours, natural cooling cools to 100
DEG C or less after, take out finished product.
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| CN109702209A (en) * | 2019-01-18 | 2019-05-03 | 佛山隆易科技有限公司 | A kind of manufacture contains the manufacturing method of profile-followed water route part |
| CN111848182A (en) * | 2020-08-03 | 2020-10-30 | 贺州学院 | Preparation method of ceramic membrane in container |
| CN114028953A (en) * | 2021-11-13 | 2022-02-11 | 景德镇陶瓷大学 | External support disc type ceramic membrane and preparation method thereof |
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| CN114028953A (en) * | 2021-11-13 | 2022-02-11 | 景德镇陶瓷大学 | External support disc type ceramic membrane and preparation method thereof |
| CN114028953B (en) * | 2021-11-13 | 2023-11-24 | 景德镇陶瓷大学 | Outer support disc type ceramic membrane and preparation method thereof |
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| CN115488992A (en) * | 2022-11-17 | 2022-12-20 | 佛山市东鹏陶瓷有限公司 | Spray tower-based production process of mixed spot blank powder |
| CN117067380A (en) * | 2023-10-11 | 2023-11-17 | 成都永益泵业股份有限公司 | Aluminum oxide pump overcurrent component and manufacturing method thereof |
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