CN109128037A - A kind of composite modified ceramic shell and preparation method thereof - Google Patents
A kind of composite modified ceramic shell and preparation method thereof Download PDFInfo
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- CN109128037A CN109128037A CN201810804250.9A CN201810804250A CN109128037A CN 109128037 A CN109128037 A CN 109128037A CN 201810804250 A CN201810804250 A CN 201810804250A CN 109128037 A CN109128037 A CN 109128037A
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- shell
- silica solution
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- zirconium oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- 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
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
- B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
The present invention relates to directional solidification and model casting fields, and in particular to a kind of addition Zirconium oxide fibre and the composite modified ceramic shell and preparation method thereof of graphite composite powder.In the present invention, guarantee that surface layer replicates the well linking effect of wax pattern surface and transition zone by adjusting technological parameter, addition Zirconium oxide fibre and graphite composite powder promote investment shell intensity and thermal diffusivity into backing layer, by hanging, stucco, drying and after being repeated several times dewaxing and sintering shell is made.The present invention utilizes holding " fiber condition " characteristic under the high intensity and high temperature of Zirconium oxide fibre itself, hot strength of investment shell can be promoted significantly, when aluminium alloy is cooling, the high-termal conductivity of graphite composite powder, shell rate of heat dispation is effectively improved, meets ceramic shell production requirement well.
Description
Technical field
The present invention relates to directional solidification and model casting fields, and in particular to a kind of addition Zirconium oxide fibre and graphite composite powder
Composite modified ceramic shell and preparation method thereof.
Background technique
In directional solidification casting process, excellent ceramic shell be manufacture precision casting important guarantee, typically be provided with
Lower requirement: (1) suitable normal temperature strength can resist the rupture generated in dewaxing and handling process to a certain extent；(2) enough
Elevated temperature strength, be able to bear high temperature melting alloys liquid it is thermomechanical impact without crack；(3) good thermal diffusivity, formed compared with
Big temperature gradient；(4) good collapsibility, convenient for shelling.Although increase is coated with the number of plies and its intensity can be improved, can reduce
The thermal diffusivity of shell, and the production time is extended, reduce production efficiency.Therefore, addition Zirconium oxide fibre and graphite can be passed through
Powder improves investment shell intensity, thermal diffusivity and collapsibility.
Chinese patent CN103880458A uses 99 alumina ceramic crucible of zirconia ceramics fiber reinforcement, 99 oxygen of preparation
Changing aluminium ceramic crucible has high intensity and thermal shock resistance, these features can be very good to be applied to ceramic shell production
In, but Zirconium oxide fibre low heat conductivity, the heat-sinking capability of shell can be reduced, and Chinese patent CN103192062A is using the good of heat
The method that conductor material such as silicon carbide or graphite prepare shell as floor sand.The capacity of heat transmission of this shell has obtained greatly mentioning
Height improves the condition of directional solidification, but investment shell intensity can generate a degree of decline.
Summary of the invention
The present invention provides the composite modified ceramic shells and preparation method thereof of a kind of Zirconium oxide fibre and graphite composite powder, i.e.,
By adjusting surface layer, transition zone technological parameter and the ingredient for changing backing layer slurry, and then improve shell surface layer consistency, improved
It crosses layer interparticle cohesion and improves backing layer intensity, thermal diffusivity and collapsibility.
The present invention uses Zirconium oxide fibre and graphite composite powder mixing to be added in shell for the first time, and is pre-wetted using silica solution
The method of Zirconium oxide fibre and graphite composite powder overcomes the non-uniformity problem of fiber and powder mixed slurry.First by oxidation
The high intensity of zirconium fiber, thermal-shock resistance improve investment shell intensity, secondly, utilizing graphite composite powder with the progress of cooling procedure
High-termal conductivity makes up the thermally conductive low feature of Zirconium oxide fibre, synthetically improves investment shell intensity and thermal diffusivity, finally, high temperature is poured
The fraction scaling loss of graphite composite powder in the process, moreover it is possible to improve the collapsibility of shell, reduce labor intensity, improve production efficiency.
The technical solution adopted by the present invention is that:
Step 1: preparing surface layer slurry, and electro-corundum mixes to improve surface layer with silica solution according to 2.9~3.1:1 mass ratio
The viscosity number of slurry, and be added silica solution mass fraction 0.2%~0.3% wetting agent and silica solution mass fraction 0.1%
~0.2% defoaming agent promotes the raising of being coated with property of slurry.
Step 2: preparing transition zone slurry, and electro-corundum mixes to propose transition with silica solution according to 2.5~2.7:1 mass ratio
Layer interparticle cohesion, i.e. surface layer and the intergranular binding force of backing layer, and it is added the 0.2%~0.3% of silica solution mass fraction
0.1%~0.2% defoaming agent of wetting agent and silica solution mass fraction improves being coated with property.
Step 3: the mixed liquor of prefabricated Zirconium oxide fibre and silica solution, first according to silica solution mass fraction 0.3%~0.5%
Zirconium oxide fibre is added in silica solution, stirs 20min with electromagnetic oscillation blender again after ultrasonic disperse 20min~30min
~30min；
Step 4: the mixed liquor of prefabricated graphite composite powder and silica solution, it first will according to silica solution mass fraction 0.1%~0.3%
Graphite composite powder is added in silica solution, after ultrasonic disperse 20min~30min again with electromagnetic oscillation blender stirring 20min~
30min；
Step 5: preparing backing layer slurry, and electro-corundum is mixed with silica solution according to 2.7~2.9:1 mass ratio, and it is molten that silicon is added
The wetting agent of glue mass fraction 0.2%~0.3% and the defoaming agent of silica solution mass fraction 0.1%~0.2%, sequentially add step
The mixing of the mixed liquor and step 4 of prefabricated Zirconium oxide fibre and silica solution prefabricated graphite composite powder and silica solution in rapid 3
Liquid；The additional amount of the mixed liquor of Zirconium oxide fibre and silica solution is electro-corundum and silica solution gross mass in backing layer slurry
0.10%~0.18%；The additional amount of the mixed liquor of graphite composite powder and silica solution is that electro-corundum and silica solution are total in backing layer slurry
The 0.03%~0.10% of quality；
Step 6: after cleaning wax pattern surface with wax-pattern cleaning solution, wax-pattern is immersed 15 in surface layer slurry for surface shell preparation
~25s, after taking-up, stucco and drying obtain surface shell；
Step 7: the made surface shell of step 6 is immersed 10~20s in transition zone slurry, taken by the preparation of transition zone shell
After out, stucco and drying obtain transition stratotype shell；
The made transition zone shell of step 7 is immersed and homemade pre-wets agent (silica solution by the preparation of step 8 backing layer shell
Quality: deionized water quality=1:2) in soak 2s, be then immersed in 20~30s in backing layer slurry, after taking-up, stucco and drying,
Multiple hanging repeatedly, leaching sand are until predetermined number of layers；
The made backing layer shell of step 8 is immersed in backing layer slurry and carries out slurry seal by step 9 slurry seal；
Step 10 dewaxing and roasting, dewaxing temperature is 160~170 DEG C, dewaxing pressure is 0.7~0.8MPa, the dewaxing time
10~15min, shell are roasted using vacuum sintering furnace, and sintering temperature is 900~1200 DEG C, time 2h, vacuum state decline
Temperature is to furnace cooling after 400 DEG C.
Steps 1 and 2 in 5 as the electro-corundum mesh number of refractory material are 325~200 mesh, and purity is α-Al2O3Matter
It measures score and is not less than 99.5%；Defoaming agent is n-octyl alcohol, and wetting agent is polyoxyethylene-type surfactant.
SiO in silica solution2Mass fraction be 30%.
Zirconium oxide fibre in step 3, the length is 2~5mm, filament diameter is 5~15 μm, tensile strength 0.3-
1.5GPa ensure that the intensity of enough shells.
It is 99.9% that carbon mass fraction is fixed in graphite composite powder used in step 4, improves heat dissipation performance, graphite composite powder
325 mesh must be not less than by mechanical grading, partial size, avoid influencing to combine between shell particle.
Wax-pattern cleaning solution is HZJ-105 hot investment casting cleaning agent of wax mould in step 6.
Step 6, in 7,8 when stucco, surface layer sand used is 80~120 mesh of granularity, and transition zone sand is 46~70 mesh, surface layer
It is 60%~70% with transition zone shell environmental drying humidity, backing layer sand is 30~45 mesh of granularity, and backing layer shell environmental drying is wet
Degree is 40~60%.
In step 10 after shell dewaxing, 2h or more is stood, precipitates the field trash in wax liquor effectively, and cleaning is de- in time
The foul of wax pan bottom.
The present invention is improved on the basis of shell traditional processing technology, small to the change of shell conventional process flow, and
Zirconium oxide fibre itself high intensity and high temperature " no scaling loss " state in shell obtained by the present invention, can be in the premise of proof strength
Lower reduction is coated with the number of plies, creates condition for the thinned of shell, and be added graphite composite powder improved inside type shell material it is scattered
Hot property is conducive to the raising of temperature gradient.
Detailed description of the invention
Fig. 1 is the normal temperature strength (force-displacement curve) for adding Zirconium oxide fibre and graphite composite powder shell mould sample.
Fig. 2 is the intensity of roasting (force-displacement curve) for adding Zirconium oxide fibre and graphite composite powder shell mould sample.
Fig. 3 is the residual strength (force-displacement curve) for adding Zirconium oxide fibre and graphite composite powder shell mould sample.
Fig. 4 is that addition Zirconium oxide fibre and graphite composite powder shell mould sample are had no progeny electromicroscopic photograph, is mainly reflected in different shapes
The pattern of Zirconium oxide fibre and matrix under state.(a) room temperature fracture；(b) fracture is roasted；(c) remaining fracture.(a) fiber shape in figure
State is intact, substantially increases the normal temperature strength of composite modified shell mould；(b) fiber still part is intact in figure, matrix densified sintering product, altogether
Same-action improves the intensity after composite modified shell mould roasting；(c) exist in figure without sequential like fiber, reduce matrix instead
Residual strength is conducive to the collapsibility of shell mould.
Specific embodiment
With the embodiment provided, the present invention is described in further detail below, of the invention with the understanding of complete and accurate
Feature.
It is the specific embodiment that inventor provides below.
A kind of preparation method of the composite modified ceramic shell of Zirconium oxide fibre and graphite composite powder of the present invention, including
Following steps:
(1) tri- barrels of slurries of A, B, C are prepared, wherein A barrels are surface layer slurry, and B barrels are transition zone slurry, and C barrels are backing layer slurry.
A barrels of slurry electro-corundums and silica solution mass ratio are 3.0:1, and B barrel slurry electro-corundums and silica solution mass ratio are 2.6:1, C barrels
Slurry electro-corundum and silica solution mass ratio are 2.8:1；
(2) A, B, C slurry bucket (L-type) are opened, 40kg, 40kg, 38kg silica solution are poured into respectively, according to wetting agent and defoaming agent
It is the 0.2% and 0.1% of silica solution quality respectively, weighs 80g wetting agent and 40g defoaming agent, is added in A and B slurry bucket, and claim
76g wetting agent and 38g defoaming agent are added in C slurry bucket out；
(3) according to 0.4% that Zirconium oxide fibre quality is silica solution quality, oxidation is weighed from prefabricated Zirconium oxide fibre
Zirconium fiber aequum, Zirconium oxide fibre is charged first in silica solution, first with being stirred again with electromagnetic oscillation after ultrasonic disperse 20min
Device stirs 30min, then by the mixed liquor of Zirconium oxide fibre and silica solution according to electro-corundum in backing layer slurry and the total matter of silica solution
The 0.15% of amount is added in C barrels；
(4) according to 0.2% that graphite composite powder quality is silica solution quality, graphite is weighed from the graphite composite powder that pre-sifted is chosen
Powder aequum, graphite composite powder is charged first in silica solution, is first stirred again with electromagnetic oscillation blender with after ultrasonic disperse 20min
30min is mixed, then by the mixed liquor of graphite composite powder and silica solution according to electro-corundum in backing layer slurry and silica solution gross mass
0.08% is added in C barrels；
(5) electro-corundum of 120kg, 104kg, 112kg are uniformly sprinkled into respectively in A, B, C slurry bucket, each additional amount
For 4kg, every minor tick 2h, until adding；
(6) after A, B, C barrels of slurry electro-corundum additions, every time before use, adjusting A, B, C barrels of slurries with deionized water
Viscosity is respectively 15s, 12s, 10s, and viscosity measurement tool is Zhan Shi tetra- and is coated with cup；
(7) wax-pattern cleans: wax-pattern being put into after cleaning 2min in the supersonic wave cleaning machine equipped with cleaning agent of wax mould, immersion is gone
10s is gently rotated in ionized water, removes remaining cleaning agent of wax mould；
(8) surface layer hanging and leaching sand: the wax-pattern inclination of any surface finish being immersed in A barrels of slurries and rotates 20s, can after proposition
Aperture bubble trolley park is gently blown with the compressed air of 0.20~0.30MPa, it is ensured that wax-pattern surface layer slurry uniformity, immediately after
The wax-pattern tiltedly put lightly is rotated in sand sprinkling machine and carries out leaching sand, is guaranteed that wax pattern surface leaching sand is uniform, is finally placed 5h and do naturally,
Ambient humidity controls between for 60%~70%, and surface layer hanging sand is 1 layer, and surface layer sand is 80~120 mesh complex sand of granularity；
(9) it transition zone hanging and leaching sand: brushes shell surface with 0.3~0.4MPa compressed air and floats sand, then by type
Shell immerses 15s in B barrels, uniformly applies and is hung on shell to slurry, and tilt rotation drenches sand in sand sprinkling machine immediately, finally places 6h certainly
So dry, ambient humidity controls between for 60%~70%, and transition zone is 1 layer, and transition zone sand is 46~70 mesh mixed sand of granularity；
(10) it backing layer hanging and leaching sand: brushes shell surface with 0.4~0.5MPa compressed air and floats sand, shell is put into
It is homemade pre-wet agent (silica solution: deionized water=1:2) infiltration 2s propose after, drop 5~6s again by shell tilt be sent into slurry
Middle 25s is uniformly applied to slurry and is hung on shell, immediately the rotation leaching sand in sand sprinkling machine, is finally placed 8h and is done naturally, ambient humidity
Control is between for 40%~60%, and backing layer hangs 3 layers, and backing layer sand is 30~45 mesh complex sand of granularity；
(11) it slurry seal: brushes shell surface with 0.4~0.5MPa compressed air and floats sand, shell is sent into C slurry bucket and is soaked
Profit is taken out, spontaneously dries 8h, and ambient humidity controls between for 40%~60%；
(12) shell dewaxes: shell being put into dewaxing kettle, dewaxing temperature is set and is 0.8MPa, takes off as 170 DEG C, dewaxing pressure
2h is stood after wax time 10min, dewaxing；
(13) Baking: being put into vacuum-sintering kiln roasting for shell, and maturing temperature is 1000 DEG C, time 2h, protects
Furnace body heating power supply is closed after temperature, but need to keep in furnace vacuum state until 400 DEG C, is then shut off vacuum equipment, allows type
Shell cools to room temperature with the furnace, takes out shell；
(14) the sheet investment shell sample made according to process above is tested using AG-Xplus Shimadzu electronic universal tester
Its 3 points of curved intensity results are as shown in table 1
The 1 specific probe intensity of sheet shell (unit: MPa) of table
| Not plus Zirconium oxide fibre and graphite composite powder | Add Zirconium oxide fibre and graphite composite powder | |
| Normal temperature strength | 8.7 | 13.9 |
| Intensity of roasting | 15.4 | 20.1 |
| Residual strength | 19.6 | 18.2 |
Its thermal diffusivity is measured, than not adding Zirconium oxide fibre and graphite composite powder powder sample to improve about 25%.
(15) the foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention do not limit to
In this, anyone skilled in the art in the technical scope disclosed by the present invention, technical side according to the present invention
Case and its inventive concept are subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of composite modified ceramic shell, which is characterized in that be added to type using Zirconium oxide fibre and graphite composite powder mixing
In shell, and fiber and powder mixed slurry are overcome not using the method that silica solution pre-wets Zirconium oxide fibre and graphite composite powder
Homogeneity question；Investment shell intensity is improved by the high intensity of Zirconium oxide fibre, thermal-shock resistance；With cooling procedure into
Row makes up the thermally conductive low feature of Zirconium oxide fibre using graphite composite powder high-termal conductivity, improves investment shell intensity and thermal diffusivity, most
Afterwards, by the scaling loss of graphite composite powder in high temperature casting process, improve the collapsibility of shell.
2. the preparation method of composite modified ceramic shell as described in claim 1, which is characterized in that specific step is as follows:
Step 1: preparing surface layer slurry, and electro-corundum mixes to improve surface layer slurry with silica solution according to 2.9~3.1:1 mass ratio
Viscosity number, and be added silica solution mass fraction 0.2%~0.3% wetting agent and silica solution mass fraction 0.1%~
0.2% defoaming agent promotes the raising of being coated with property of slurry；
Step 2: preparing transition zone slurry, and electro-corundum mixes to mention transition zone with silica solution according to 2.5~2.7:1 mass ratio
Interparticle cohesion, i.e. surface layer and the intergranular binding force of backing layer, and 0.2%~0.3% wetting of silica solution mass fraction is added
0.1%~0.2% defoaming agent of agent and silica solution mass fraction improves being coated with property；
Step 3: the mixed liquor of prefabricated Zirconium oxide fibre and silica solution, first according to silica solution mass fraction 0.3%~0.5% by oxygen
Change zirconium fiber be added in silica solution, after ultrasonic disperse 20min~30min again with electromagnetic oscillation blender stirring 20min~
30min；
Step 4: the mixed liquor of prefabricated graphite composite powder and silica solution, first according to silica solution mass fraction 0.1%~0.3% by graphite
Powder is added in silica solution, stirs 20min~30min with electromagnetic oscillation blender again after ultrasonic disperse 20min~30min；
Step 5: preparing backing layer slurry, and electro-corundum is mixed with silica solution according to 2.7~2.9:1 mass ratio, and silica solution matter is added
The wetting agent of score 0.2%~0.3% and the defoaming agent of silica solution mass fraction 0.1%~0.2% are measured, step 3 is sequentially added
In prefabricated Zirconium oxide fibre and silica solution the prefabricated graphite composite powder and silica solution of mixed liquor and step 4 mixed liquor；
The additional amount of the mixed liquor of Zirconium oxide fibre and silica solution is electro-corundum and the 0.10% of silica solution gross mass in backing layer slurry
~0.18%；The additional amount of the mixed liquor of graphite composite powder and silica solution is electro-corundum and silica solution gross mass in backing layer slurry
0.03%~0.10%；
Step 6: surface shell preparation, after clean wax pattern surface with wax-pattern cleaning solution, by wax-pattern immersion surface layer slurry in 15~
25s, after taking-up, stucco and drying obtain surface shell；
Step 7: the made surface shell of step 6 is immersed 10~20s in transition zone slurry by the preparation of transition zone shell, after taking-up,
Stucco and drying obtain transition stratotype shell；
The made transition zone shell of step 7 is immersed homemade pre-wet and soaks 2s in agent, so by the preparation of step 8 backing layer shell
Afterwards immerse backing layer slurry in 20~30s, after taking-up, stucco and drying, repeatedly repeatedly hanging, leaching sand until predetermined number of layers；Self-control
Pre-wet in agent, silica solution quality and deionized water quality ratio are 1:2；
The made backing layer shell of step 8 is immersed in backing layer slurry and carries out slurry seal by step 9 slurry seal；
Step 10 dewaxing and roasting, dewaxing temperature is 160~170 DEG C, dewaxing pressure is 0.7~0.8MPa, the dewaxing time 10~
15min, shell are roasted using vacuum sintering furnace, and sintering temperature is 900~1200 DEG C, time 2h, are cooled under vacuum state
Furnace cooling after 400 DEG C.
3. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that step 1, the 2nd
Step and step 5 in as refractory material electro-corundum mesh number be 325~200 mesh, purity be α-Al2O3Mass fraction not
Lower than 99.5%；Defoaming agent is n-octyl alcohol, and wetting agent is polyoxyethylene-type surfactant.
4. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in silica solution
SiO2Mass fraction be 30%.
5. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 3, oxygen
Change zirconium fiber, the length is 2~5mm, filament diameter is 5~15 μm, and tensile strength 0.3-1.5GPa ensure that enough shells
Intensity.
6. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 4, institute
It is 99.9% that carbon mass fraction is fixed in graphite composite powder, improves heat dissipation performance, graphite composite powder must by mechanical grading,
Partial size is not less than 325 mesh, avoids influencing to combine between shell particle.
7. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 6, wax
Mould cleaning solution is HZJ-105 hot investment casting cleaning agent of wax mould；When stucco, surface layer sand used is 80~120 mesh of granularity, surface layer type
Shell environmental drying humidity is 60%~70%.
8. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 7, spread
When sand, transition zone sand is 46~70 mesh, and transition zone shell environmental drying humidity is 60%~70%.
9. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 8, spread
When sand, backing layer sand is 30~45 mesh of granularity, and backing layer shell environmental drying humidity is 40~60%.
10. a kind of preparation method of composite modified ceramic shell as claimed in claim 2, which is characterized in that in step 10,
After shell dewaxing, 2h or more is stood, precipitates the field trash in wax liquor effectively, and the foul of the trench bottom of cleaning dewaxing in time.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405134A (en) * | 2019-08-26 | 2019-11-05 | 上海大学 | A kind of high-strength composite fiber ceramics shell and preparation method thereof |
| CN110434288A (en) * | 2019-08-26 | 2019-11-12 | 沃尔曼科技张家港有限公司 | A kind of fiber ceramics shell and preparation method thereof |
| CN111360200A (en) * | 2020-04-10 | 2020-07-03 | 山东泰山钢铁集团有限公司 | Investment precision casting process with shell cracking prevention and easy sand removal |
| CN113370344A (en) * | 2021-04-28 | 2021-09-10 | 潍坊科技学院 | Preparation process of directional solidification ceramic part |
| CN113967581A (en) * | 2021-10-25 | 2022-01-25 | 湖州南丰机械制造有限公司 | Shell containing graphite sand and preparation method thereof |
| CN114682729A (en) * | 2020-11-03 | 2022-07-01 | 福建省亿达精密铸造有限公司 | Preparation method of precision casting silica sol shell |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991016159A1 (en) * | 1990-04-12 | 1991-10-31 | Alcan Deutschland Gmbh | Composite casting process |
| CN1541786A (en) * | 2003-05-01 | 2004-11-03 | 中国科学院金属研究所 | Preparing method of Gamma-TiAl base-alloy shuttering for investment casting |
| CN103192062A (en) * | 2013-04-01 | 2013-07-10 | 东方电气集团东方汽轮机有限公司 | Mold case for producing high-temperature alloy single crystal blades |
| CN103880458A (en) * | 2014-01-22 | 2014-06-25 | 龙口市正阳特种耐火材料有限公司 | Preparation method of zirconia ceramics fiber-reinforced 99 alumina ceramic crucible |
| CN105834361A (en) * | 2016-04-01 | 2016-08-10 | 江苏大学 | Method for preparing modified ceramic mold shell through special-shaped cross section short carbon fibers |
| CN106518027A (en) * | 2016-10-11 | 2017-03-22 | 江苏大学 | Preparation method of shell synchronously modified by mineralizing agent and chopped carbon fibers |
| EP3153666A1 (en) * | 2015-10-06 | 2017-04-12 | MTU Aero Engines GmbH | Ceramic hybrid blade for turbomachines |
| CN107282857A (en) * | 2017-05-12 | 2017-10-24 | 上海大学 | MgO‑SrZrO3Composite shell, using and preparation method thereof |
-
2018
- 2018-07-20 CN CN201810804250.9A patent/CN109128037A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991016159A1 (en) * | 1990-04-12 | 1991-10-31 | Alcan Deutschland Gmbh | Composite casting process |
| CN1541786A (en) * | 2003-05-01 | 2004-11-03 | 中国科学院金属研究所 | Preparing method of Gamma-TiAl base-alloy shuttering for investment casting |
| CN103192062A (en) * | 2013-04-01 | 2013-07-10 | 东方电气集团东方汽轮机有限公司 | Mold case for producing high-temperature alloy single crystal blades |
| CN103880458A (en) * | 2014-01-22 | 2014-06-25 | 龙口市正阳特种耐火材料有限公司 | Preparation method of zirconia ceramics fiber-reinforced 99 alumina ceramic crucible |
| EP3153666A1 (en) * | 2015-10-06 | 2017-04-12 | MTU Aero Engines GmbH | Ceramic hybrid blade for turbomachines |
| CN105834361A (en) * | 2016-04-01 | 2016-08-10 | 江苏大学 | Method for preparing modified ceramic mold shell through special-shaped cross section short carbon fibers |
| CN106518027A (en) * | 2016-10-11 | 2017-03-22 | 江苏大学 | Preparation method of shell synchronously modified by mineralizing agent and chopped carbon fibers |
| CN107282857A (en) * | 2017-05-12 | 2017-10-24 | 上海大学 | MgO‑SrZrO3Composite shell, using and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405134A (en) * | 2019-08-26 | 2019-11-05 | 上海大学 | A kind of high-strength composite fiber ceramics shell and preparation method thereof |
| CN110434288A (en) * | 2019-08-26 | 2019-11-12 | 沃尔曼科技张家港有限公司 | A kind of fiber ceramics shell and preparation method thereof |
| CN111360200A (en) * | 2020-04-10 | 2020-07-03 | 山东泰山钢铁集团有限公司 | Investment precision casting process with shell cracking prevention and easy sand removal |
| CN114682729A (en) * | 2020-11-03 | 2022-07-01 | 福建省亿达精密铸造有限公司 | Preparation method of precision casting silica sol shell |
| CN114682729B (en) * | 2020-11-03 | 2023-10-20 | 福建省亿达精密铸造有限公司 | Preparation method of silica sol shell of precision casting |
| CN113370344A (en) * | 2021-04-28 | 2021-09-10 | 潍坊科技学院 | Preparation process of directional solidification ceramic part |
| CN113370344B (en) * | 2021-04-28 | 2023-02-21 | 潍坊科技学院 | Preparation process of directional solidification ceramic part |
| CN113967581A (en) * | 2021-10-25 | 2022-01-25 | 湖州南丰机械制造有限公司 | Shell containing graphite sand and preparation method thereof |
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Application publication date: 20190104 |