CN107243590A - A kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part - Google Patents
A kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part Download PDFInfo
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- CN107243590A CN107243590A CN201710283890.5A CN201710283890A CN107243590A CN 107243590 A CN107243590 A CN 107243590A CN 201710283890 A CN201710283890 A CN 201710283890A CN 107243590 A CN107243590 A CN 107243590A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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Abstract
The invention discloses a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part, the present invention uses based on the new Introduction To Stereolithography of face exposure method to realize the preparation of single crystal super alloy part ceramic-mould, without the assembling of core shell and the preparation and assembling of wax-pattern, the high precision integrated ceramic-mould for meeting and requiring can be directly prepared, technological process is greatly simplified.Crystallographic system system is selected to be formed in one with casting mold, avoid that the foreign matter for selecting crystallographic system system and part wax-pattern assembled belt in traditional model casting is mingled with or rigging position is bad and produce stray crystal defect, and the accurate control to high temperature alloy directional solidification process can be realized by the design to casting mold structure and wall thickness, reduce the generation of casting flaw.
Description
Technical field
The invention belongs to increase ability manufacturing technology field, and in particular to a kind of ceramic-mould of oriented single crystal high temperature alloy part
Preparation method.
Background technology
High temperature alloy is the widely used material of current energy source and power equipment hot junction parts, wherein single crystal super alloy by
In the part that be used to manufacture high temperatures work with excellent high-temperature behavior.Labyrinth single crystal super alloy part
It is general to be manufactured using the technique of directional solidification model casting.The ceramic-mould manufacturing process of model casting includes core system
Make, wax-pattern is manufactured, is organized mould, is coated with shell processed, changes the steps such as wax, roasting, be related to core metal die and prepare and wax-pattern metal die
The early stage production preparations such as preparation.This method is due to factors such as Operational preparation cycle and costs, in part early stage design iteration
During, it is impossible to accomplish the quick response to developing demand.
In terms of mold material, what high temperature alloy precision casting was commonly used has alumina base, silica based materials.Alumina base
Material does forming core and there is the problem of depoling is difficult, and silica based materials are the problem of then exist with alloy melt interfacial reaction.
Calcium oxide is as a kind of refractory material with premium properties, and mechanical behavior under high temperature is good, and chemical property is stable；Also, due to
There is reaction in water, be such as used as core material, then removing will be very easy to, and be a kind of preferable ceramic-mould material.Simultaneously also by
The problem of there is easy aquation, calcium oxide aqueous-based ceramic slurry preparation has difficulties, and is not yet used widely.
Increases material manufacturing technology is the multidisciplinary advanced manufacturing technology grown up such as a kind of fuse information, material, manufacture, is led to
Cross material successively add up shaping entity component, be adapted to complex parts small lot production, can save a large amount of times and into
This.Photocureable rapid shaping (stereolithography) is to be developed at first, a kind of higher increasing material manufacturing skill of precision
Art, liquid photosensitive resin is successively scanned and curing molding resin parts by the light beam of specific wavelength.Xi'an Communications University proposes
A kind of core shell integrated ceramic casting mold method for fast mfg based on Introduction To Stereolithography, this method is made first
Standby light-cured resin mould, then using Ceramic gel molding process, after freeze-dried, degreasing, high temperature sintering, can be achieved pottery
The quick manufacture of porcelain casting mold.
Traditional spot scan is developed into face exposure by photocuring technology new at present, small anti-using LED/light source, numeral
Light microscopic array (DMD) dynamic mask and optical imaging system, can be achieved to solidify while resin in part whole cross section, carry significantly
The high preparation efficiency of part.Meanwhile, according to different application fields, certain ceramics particle can be added photosensitive resin, prepared
Go out resin base ceramic slurry, then by Stereolithography technique, directly prepare ceramic material part.This new photocuring is fast
Fast forming technique provides a kind of new technological approaches to prepare single crystal super alloy part ceramic-mould.With traditional photocuring tree
Fat mould combination Ceramic gel injection molding method prepares ceramic-mould and compared, and the method can greatly simplify preparation technology flow, enter one
Step accelerates preparation efficiency, and need not prepare aqueous-based ceramic slurry, and the shaping to calcium oxide ceramics material provides technical foundation.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of ceramic-mould system of oriented single crystal high temperature alloy part
Preparation Method, this method uses the Introduction To Stereolithography based on face exposure method, has during using its rapid shaping complex parts
Some advantages, prepare monoblock type calcium oxide ceramics casting mold, for the development of single crystal super alloy part, reduce R＆D costs, contracting
The short R＆D cycle.
In order to achieve the above object, the present invention comprises the following steps：
Step one, ceramic-mould is designed according to demand；
Step 2, prepares ceramic slurry；
Step 3, STL forms are converted to by the ceramic-mould threedimensional model in step one, according to the requirement of part minimal characteristic
Determine lift height and carry out hierarchy slicing that 20 μm~100 μm of lift height, it is determined that shaping is orientated and adds support processing, is obtained
Stereolithography machine data；Using the photocureable rapid shaping machine based on face exposure method, by the ceramic slurry prepared in step 2
Material is added in the liquid bath of forming machine, carries out the preparation of ceramic-mould biscuit；
Step 4, is post-processed to ceramic-mould biscuit；
Step 5, in high temperature sintering furnace, according to predetermined heating process, step is completed in 1500 DEG C~1700 DEG C temperature ranges
The high temperature sintering of the ceramic-mould biscuit prepared in rapid four, obtains oriented single crystal high temperature alloy part ceramic-mould.
In the step one, the specific method for designing ceramic-mould is as follows：
Require to determine general structure, running gate system according to casting technique, select the basic parameter of crystallographic system system, casting mold wall thickness；Make
Part ceramic-mould modeling is carried out with three-dimensional CAD modeling software；Using Procast casting simulation softwares to pouring temperature, casting mold
Ceramic-mould stress, temperature field, crystal growth carry out sunykatuib analysis under the conditions of temperature, withdrawing rate, according to analog result to pottery
Porcelain casting mold is designed iteration；Finally give directional solidification uniform temperature fields, and the few ceramic-mould structure of casting flaw and
Design parameter, sets up ceramic-mould threedimensional model.
In the step 2, the specific method for preparing ceramic slurry is as follows：
Photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, ceramic powder is gradually added into whipping process
And sintering aid, finally make solid phase dispersion uniform using ball grinding method；
Wherein, the volume fraction of ceramic powder accounts for the 40%~60% of ceramic slurry cumulative volume；Sintering aid content is pottery
The 0.5%~2% of porcelain powder quality percentage；Dispersant is the 0.5%~2% of ceramic powder mass percent；Remaining
For liquid UV photosensitive resins, vacuum degassing after uniform mixing obtains photosensitive resin base ceramic slurry.
The ceramic powder is mainly calcium oxide, and particle diameter is 0.1 μm~100 μm, and sintering aid is nanometer ZrO2Or receive
Rice Y2O3One or both of according to mass ratio 1:1 homogeneous mixture.
In the step 4, the specific method post-processed to ceramic-mould biscuit is as follows：
With the ceramic-mould biscuit prepared in industrial alcohol washes step 3, it is placed in further solid in post processing photocuring case
Change 3~5h, be subsequently placed in drying box makes the liquid state organics of residual volatilize in 40~50 DEG C of 5~10h of temperature range inside holding,
Artificial removal's support and finishing surface of internal cavity, 600~900 DEG C of 3~6h of temperature range inside holding removings have in high temperature sintering furnace
Machine thing.
In the step 5, obtain after oriented single crystal high temperature alloy part ceramic-mould, ceramic-mould is carried out at waterproof
Reason.
The specific method for carrying out water-proofing treatment is as follows：
The ceramic-mould prepared in step 5 is placed in 200~300 DEG C of carbon dioxide atmosphere case, it is former in mo(U)ld face
The fine and close calcium carbonate layer of position generation.
Compared with prior art, the present invention uses based on the new Introduction To Stereolithography of face exposure method to realize list
The preparation of brilliant high temperature alloy part ceramic-mould, without the assembling of core shell and the preparation and assembling of wax-pattern, can directly be prepared
Desired high precision integrated ceramic-mould is met, technological process is greatly simplified.Crystallographic system system is selected to be formed in one with casting mold, it is to avoid
The foreign matter for selecting crystallographic system system and part wax-pattern assembled belt in traditional model casting is mingled with or rigging position is bad and produce stray crystal
Defect, and the accurate control to high temperature alloy directional solidification process can be realized by the design to casting mold structure and wall thickness,
Reduce the generation of casting flaw.Existing light-cured resin mould attached gel injection molding, which prepares ceramic-mould, to be needed by preparing
Then resin die carries out ceramic slurry gel casting again, and resin die is molded for hot spot spot scan, and preparation efficiency is low, and
And the aqueous-based ceramic slurry of gel injection-moulding is high to viscosity requirement, there is gas enclosure when being poured into resin die, fill that type is imperfect, spillage
The problems such as, resin die also needs manual removal in subsequent technique.And the face exposure method Stereolithography that the present invention is used, shaping
Efficiency high, using photosensitive resin base ceramic slurry, can directly be made the calcium oxide-based ceramic-mould of labyrinth, for monocrystalline part
Rapid development.This method can simplify preparation technology flow, shorten manufacturing cycle, and with casting mold and high temperature alloy melt circle
Face reaction is weak, and core removes easy advantage.
Brief description of the drawings
Fig. 1 is part ceramic-mould schematic diagram in embodiment 1；
In figure, 1, dead head, 2, core pattern shell linkage section, 3, part portion, 4, spiral crystal selector, 5, base, 6, center it is vertical
Post.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1：
Step one, ceramic-mould is designed；
According to casting technique require to determine casting mold be 2 turbo blade parts composition module, blade tips down, top pouring type cast
Structure, choosing crystalline substance is carried out using spiral crystal selector, and the major parameter of spiral crystal selector is：Seeding section height 30mm, seeding section diameter
The a diameter of 5mm of 17mm, helical duct, lead angle are 20 °, spiral shell footpath is 14mm, and casting mold initial wall thickness is 7mm；It is three-dimensional using UG
Modeling software carries out part ceramic-mould modeling；Using 1550 DEG C of pouring temperatures of Procast casting simulation softwares sunykatuib analysis,
Ceramic-mould stress, temperature field, crystal growth condition under the conditions of 1550 DEG C of mold temperatures, 3-5mm/min withdrawing rates, according to mould
Intend result and iteration is designed to ceramic-mould；Take the method optimization heat transfer for becoming wall thickness special in the case where meeting mould strength
Property, directional solidification uniform temperature fields and the few ceramic-mould structure of casting flaw and design parameter are finally given, ceramics are set up
Casting mold threedimensional model, schematic diagram is shown in Fig. 1.
Step 2, prepares ceramic slurry；
Photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, ceramic powder is gradually added into whipping process
And sintering aid, finally make solid phase dispersion uniform using ball grinding method.Wherein, ceramic powder is mainly calcium oxide, using level Four
Grain composition, average grain diameter is respectively 2 μm, 5 μm, 40 μm, 100 μm, and ceramic, solid-phase volume fraction is 60%；Sintering aid content
For 0.5wt.%~2wt.% of ceramic powder；Dispersant is 0.5wt.%~2wt.% of ceramic powder；Remaining is liquid
State UV photosensitive resins.Vacuum degassing after uniform mixing, obtains photosensitive resin base ceramic slurry.
Step 3, prepares ceramic-mould biscuit；
Designed ceramic-mould threedimensional model is converted into STL forms, hierarchy slicing is carried out using Magics softwares, point
50 μm of thickness degree, and determine shaping orientation and add support processing, obtain Stereolithography machine data；Using based on face exposure method
Photocureable rapid shaping machine, by the ceramic slurry prepared add forming machine liquid bath in, carry out ceramic-mould biscuit system
It is standby.
Step 4, the post processing of ceramic-mould biscuit；
The ceramic-mould biscuit prepared with industrial alcohol washes step 3, is placed in post processing photocuring case and further solidifies
3h, be subsequently placed in drying box makes the liquid state organics of residual volatilize in 40 DEG C of insulation 5h；Artificial removal's support and finishing inner chamber
Surface；600 DEG C of temperature range inside holding 6h in high temperature sintering furnace, remove organic matter.
Step 5, high temperature sintering obtains ceramic-mould；
In high temperature sintering furnace, according to predetermined heating process, ceramic-mould biscuit prepared by step 4 is completed at 1500 DEG C
High temperature sintering, obtain for single crystal super alloy machine parts'precise cast ceramic-mould.
Step 6, the preventing hydration processing of ceramic-mould；
Ceramic-mould prepared by step 5 is placed in 200 DEG C of carbon dioxide atmosphere case, in mo(U)ld face in-situ preparation
Fine and close calcium carbonate layer, prevents aquation.
Embodiment 2：
Step one, according to casting technique require determine general structure, running gate system, select crystallographic system system, casting mold wall thickness it is basic
Parameter；Part ceramic-mould modeling is carried out using three-dimensional CAD modeling software；Using Procast casting simulation softwares to cast temperature
Ceramic-mould stress, temperature field, crystal growth carry out sunykatuib analysis under the conditions of degree, mold temperature, withdrawing rate, are tied according to simulation
Fruit is designed iteration to ceramic-mould；Finally give directional solidification uniform temperature fields, and the few ceramic-mould of casting flaw
Structure and design parameter, set up ceramic-mould threedimensional model；
Step 2, photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, are gradually added into whipping process
Ceramic powder and sintering aid, finally make solid phase dispersion uniform using ball grinding method；
Wherein, the volume fraction of ceramic powder accounts for the 60% of ceramic slurry cumulative volume；Sintering aid content is ceramic powder
The 2% of mass percent；Dispersant is the 2% of ceramic powder mass percent；Remaining is liquid UV photosensitive resins, uniformly
Vacuum degassing after mixing, obtains photosensitive resin base ceramic slurry；
Step 3, STL forms are converted to by the ceramic-mould threedimensional model in step one, according to the requirement of part minimal characteristic
Determine lift height and carry out hierarchy slicing that 100 μm of lift height, it is determined that shaping is orientated and adds support processing, obtains photocuring
Forming machine data；Using the photocureable rapid shaping machine based on face exposure method, the ceramic slurry prepared in step 2 is added
In the liquid bath of forming machine, the preparation of ceramic-mould biscuit is carried out；
Step 4, is post-processed to ceramic-mould biscuit, with the ceramic-mould prepared in industrial alcohol washes step 3
Biscuit, is placed in post processing photocuring case further solidification 5h, be subsequently placed in drying box makes residual in 50 DEG C of inside holding 10h
Liquid state organics volatilize, artificial removal's support and finishing surface of internal cavity, 900 DEG C of temperature range inside holding 3h in high temperature sintering furnace
Remove organic matter；
Step 5, in high temperature sintering furnace, according to predetermined heating process, the ceramics prepared in step 4 are completed at 1700 DEG C
The high temperature sintering of casting mold biscuit, obtains oriented single crystal high temperature alloy part ceramic-mould, and ceramic-mould is placed in 300 DEG C of dioxy
Change in carbon atmosphere box, in the calcium carbonate layer that mo(U)ld face in-situ preparation is fine and close.
Ceramic powder is mainly calcium oxide, particle diameter is 0.1 μm, 5 μm, 40 μm, 100 μm of levels match somebody with somebody mixed powder.
Embodiment 3：
Step one, according to casting technique require determine general structure, running gate system, select crystallographic system system, casting mold wall thickness it is basic
Parameter；Part ceramic-mould modeling is carried out using three-dimensional CAD modeling software；Using Procast casting simulation softwares to cast temperature
Ceramic-mould stress, temperature field, crystal growth carry out sunykatuib analysis under the conditions of degree, mold temperature, withdrawing rate, are tied according to simulation
Fruit is designed iteration to ceramic-mould；Finally give directional solidification uniform temperature fields, and the few ceramic-mould of casting flaw
Structure and design parameter, set up ceramic-mould threedimensional model；
Step 2, photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, are gradually added into whipping process
Ceramic powder and sintering aid, finally make solid phase dispersion uniform using ball grinding method；
Wherein, the volume fraction of ceramic powder accounts for the 50% of ceramic slurry cumulative volume；Sintering aid content is ceramic powder
The 1.3% of mass percent；Dispersant is the 1.3% of ceramic powder mass percent；Remaining is liquid UV photosensitive resins,
Vacuum degassing after uniform mixing, obtains photosensitive resin base ceramic slurry；
Step 3, STL forms are converted to by the ceramic-mould threedimensional model in step one, according to the requirement of part minimal characteristic
Determine lift height and carry out hierarchy slicing that 60 μm of lift height, it is determined that shaping is orientated and adds support processing, is light-cured into
Type machine data；Using the photocureable rapid shaping machine based on face exposure method, the ceramic slurry prepared in step 2 is added into
In the liquid bath of type machine, the preparation of ceramic-mould biscuit is carried out；
Step 4, is post-processed to ceramic-mould biscuit, with the ceramic-mould prepared in industrial alcohol washes step 3
Biscuit, is placed in post processing photocuring case further solidification 4h, is subsequently placed in drying box in 45 DEG C of temperature range inside holding 7h
The liquid state organics of residual are made to volatilize, artificial removal's support and finishing surface of internal cavity, 650 DEG C of temperature ranges in high temperature sintering furnace
Inside holding 5h removes organic matter；
Step 5, in high temperature sintering furnace, according to predetermined heating process, the ceramics prepared in step 4 are completed at 1600 DEG C
The high temperature sintering of casting mold biscuit, obtains oriented single crystal high temperature alloy part ceramic-mould, and ceramic-mould is placed in 250 DEG C of dioxy
Change in carbon atmosphere box, in the calcium carbonate layer that mo(U)ld face in-situ preparation is fine and close.
Ceramic powder is mainly calcium oxide, particle diameter is 2 μm, 5 μm, 40 μm of levels match somebody with somebody mixed powder.
Embodiment 4：
Step one, according to casting technique require determine general structure, running gate system, select crystallographic system system, casting mold wall thickness it is basic
Parameter；Part ceramic-mould modeling is carried out using three-dimensional CAD modeling software；Using Procast casting simulation softwares to cast temperature
Ceramic-mould stress, temperature field, crystal growth carry out sunykatuib analysis under the conditions of degree, mold temperature, withdrawing rate, are tied according to simulation
Fruit is designed iteration to ceramic-mould；Finally give directional solidification uniform temperature fields, and the few ceramic-mould of casting flaw
Structure and design parameter, set up ceramic-mould threedimensional model；
Step 2, photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, are gradually added into whipping process
Ceramic powder and sintering aid, finally make solid phase dispersion uniform using ball grinding method；
Wherein, the volume fraction of ceramic powder accounts for the 40% of ceramic slurry cumulative volume；Sintering aid content is ceramic powder
The 0.5% of mass percent；Dispersant is the 0.5% of ceramic powder mass percent；Remaining is liquid UV photosensitive resins,
Vacuum degassing after uniform mixing, obtains photosensitive resin base ceramic slurry；
Step 3, STL forms are converted to by the ceramic-mould threedimensional model in step one, according to the requirement of part minimal characteristic
Determine lift height and carry out hierarchy slicing that 20 μm of lift height, it is determined that shaping is orientated and adds support processing, is light-cured into
Type machine data；Using the photocureable rapid shaping machine based on face exposure method, the ceramic slurry prepared in step 2 is added into
In the liquid bath of type machine, the preparation of ceramic-mould biscuit is carried out；
Step 4, is post-processed to ceramic-mould biscuit, with the ceramic-mould prepared in industrial alcohol washes step 3
Biscuit, is placed in post processing photocuring case further solidification 3h, is subsequently placed in drying box in 40 DEG C of temperature range inside holding 5h
The liquid state organics of residual are made to volatilize, artificial removal's support and finishing surface of internal cavity, 600 DEG C of insulation 3h take off in high temperature sintering furnace
Except organic matter；
Step 5, in high temperature sintering furnace, according to predetermined heating process, the ceramics prepared in step 4 are completed at 1500 DEG C
The high temperature sintering of casting mold biscuit, obtains oriented single crystal high temperature alloy part ceramic-mould, and ceramic-mould is placed in 200 DEG C of dioxy
Change in carbon atmosphere box, in the calcium carbonate layer that mo(U)ld face in-situ preparation is fine and close.
Ceramic powder is mainly calcium oxide, particle diameter is 0.1 μm, 5 μm, 40 μm of levels match somebody with somebody mixed powder.
Claims (7)
1. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part, it is characterised in that comprise the following steps：
Step one, ceramic-mould is designed according to demand；
Step 2, prepares ceramic slurry；
Step 3, STL forms are converted to by the ceramic-mould threedimensional model in step one, require to determine according to part minimal characteristic
Lift height simultaneously carries out hierarchy slicing, 20 μm~100 μm of lift height, it is determined that shaping is orientated and adds support processing, obtains light and consolidates
Change forming machine data；Using the photocureable rapid shaping machine based on face exposure method, the ceramic slurry prepared in step 2 is added
Enter in the liquid bath of forming machine, carry out the preparation of ceramic-mould biscuit；
Step 4, is post-processed to ceramic-mould biscuit；
Step 5, in high temperature sintering furnace, according to predetermined heating process, step 4 is completed in 1500 DEG C~1700 DEG C temperature ranges
The high temperature sintering of the ceramic-mould biscuit of middle preparation, obtains oriented single crystal high temperature alloy part ceramic-mould.
2. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 1, its feature exists
In in the step one, the specific method for designing ceramic-mould is as follows：
Require to determine general structure, running gate system according to casting technique, select the basic parameter of crystallographic system system, casting mold wall thickness；Use three
Vc AD modeling softwares carry out part ceramic-mould modeling；Using Procast casting simulation softwares to pouring temperature, mold temperature,
Ceramic-mould stress, temperature field, crystal growth carry out sunykatuib analysis under the conditions of withdrawing rate, according to analog result to ceramic-mould
It is designed iteration；Finally give directional solidification uniform temperature fields, and the few ceramic-mould structure of casting flaw and design ginseng
Number, sets up ceramic-mould threedimensional model.
3. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 1, its feature exists
In in the step 2, the specific method for preparing ceramic slurry is as follows：
Photosensitive resin and dispersant are uniformly mixed using mechanical agitation mode, ceramic powder and burning are gradually added into whipping process
Auxiliary agent is tied, finally makes solid phase dispersion uniform using ball grinding method；
Wherein, the volume fraction of ceramic powder accounts for the 40%~60% of ceramic slurry cumulative volume；Sintering aid content is ceramic powder
The 0.5%~2% of weight percentage；Dispersant is the 0.5%~2% of ceramic powder mass percent；Remaining is liquid
State UV photosensitive resins, vacuum degassing after uniform mixing, obtain photosensitive resin base ceramic slurry.
4. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 3, its feature exists
In the ceramic powder is mainly calcium oxide, and particle diameter is 0.1 μm~100 μm, and sintering aid is nanometer ZrO2Or nanometer Y2O3
One or both of according to mass ratio 1:1 homogeneous mixture.
5. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 1, its feature exists
In in the step 4, the specific method post-processed to ceramic-mould element Bear-grudge is as follows：
With the ceramic-mould biscuit prepared in industrial alcohol washes step 3, further solidification 3 in post processing photocuring case is placed in
~5h, be subsequently placed in drying box makes the liquid state organics of residual volatilize in 40~50 DEG C of 5~10h of temperature range inside holding, people
Work removes support and finishing surface of internal cavity, and 600~900 DEG C of 3~6h of temperature range inside holding removings are organic in high temperature sintering furnace
Thing.
6. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 1, its feature exists
In, in the step 5, obtain after oriented single crystal high temperature alloy part ceramic-mould, to ceramic-mould carry out water-proofing treatment.
7. a kind of ceramic-mould preparation method of oriented single crystal high temperature alloy part according to claim 6, its feature exists
In the specific method for carrying out water-proofing treatment is as follows：
The ceramic-mould prepared in step 5 is placed in 200~300 DEG C of carbon dioxide atmosphere case, it is raw in mo(U)ld face original position
Into fine and close calcium carbonate layer.
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| CN108101519A (en) * | 2017-12-19 | 2018-06-01 | 西安交通大学 | A kind of ceramic-mould preparation method for the shaping of parts with complex structures directional solidification |
| CN111002427A (en) * | 2019-12-18 | 2020-04-14 | 南京理工大学 | 3D printing forming device and method for laminated ceramic matrix composite based on photocuring technology |
| CN111168004A (en) * | 2020-01-20 | 2020-05-19 | 西安交通大学 | Method for forming single crystal part by gel casting integrated casting based on spiral crystal selector with seed crystal block embedded structure |
| CN111421111A (en) * | 2020-05-15 | 2020-07-17 | 贵州安吉航空精密铸造有限责任公司 | Pouring channel device for investment casting process and preparation method thereof |
| CN111992671A (en) * | 2020-07-24 | 2020-11-27 | 连云港连灌智能科技有限公司 | Shell mould and manufacturing method and casting method thereof |
| CN112573906A (en) * | 2020-12-31 | 2021-03-30 | 郑州大学 | Preparation method of super-thick crack-free alumina ceramic based on digital light processing molding technology |
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| CN112573906A (en) * | 2020-12-31 | 2021-03-30 | 郑州大学 | Preparation method of super-thick crack-free alumina ceramic based on digital light processing molding technology |
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