CN104072156A - Nanometer composite ceramic core - Google Patents
Nanometer composite ceramic core Download PDFInfo
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- CN104072156A CN104072156A CN201410224822.8A CN201410224822A CN104072156A CN 104072156 A CN104072156 A CN 104072156A CN 201410224822 A CN201410224822 A CN 201410224822A CN 104072156 A CN104072156 A CN 104072156A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title abstract 4
- 239000000843 powder Substances 0.000 claims abstract description 29
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 25
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 25
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 8
- 239000004200 microcrystalline wax Substances 0.000 claims abstract description 7
- 235000019808 microcrystalline wax Nutrition 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- 239000002114 nanocomposite Substances 0.000 claims description 27
- 239000008187 granular material Substances 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 13
- 239000004902 Softening Agent Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 9
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 9
- 150000003746 yttrium Chemical class 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052582 BN Inorganic materials 0.000 claims description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 6
- 241000241413 Propolis Species 0.000 claims description 6
- XFBXDGLHUSUNMG-UHFFFAOYSA-N alumane;hydrate Chemical compound O.[AlH3] XFBXDGLHUSUNMG-UHFFFAOYSA-N 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 229940069949 propolis Drugs 0.000 claims description 6
- 229960001866 silicon dioxide Drugs 0.000 claims description 6
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- SHYSNLBEJADGAC-UHFFFAOYSA-N decanedioic acid;propane-1,1-diol Chemical compound CCC(O)O.OC(=O)CCCCCCCCC(O)=O SHYSNLBEJADGAC-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- PCMOZDDGXKIOLL-UHFFFAOYSA-K yttrium chloride Chemical compound [Cl-].[Cl-].[Cl-].[Y+3] PCMOZDDGXKIOLL-UHFFFAOYSA-K 0.000 claims description 3
- BXJPTTGFESFXJU-UHFFFAOYSA-N yttrium(3+);trinitrate Chemical compound [Y+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O BXJPTTGFESFXJU-UHFFFAOYSA-N 0.000 claims description 3
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 230000001089 mineralizing effect Effects 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 34
- 229910001069 Ti alloy Inorganic materials 0.000 description 11
- 238000005266 casting Methods 0.000 description 6
- 238000005495 investment casting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BNUDRLITYNMTPD-UHFFFAOYSA-N acetic acid;zirconium Chemical compound [Zr].CC(O)=O BNUDRLITYNMTPD-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Ceramic Products (AREA)
Abstract
The invention discloses a nanometer composite ceramic core which is characterized by comprising the following raw materials in percentage by weight: 12%-18% of mineralizing agents, 14%-20% of plasticizing agents, 2%-3% of nanometer silicon dioxide, 1%-2% of nanometer magnesium oxide, 2%-3% of microcrystalline wax and the balance of rare earth coated nanometer composite powder. The nanometer composite ceramic core disclosed by the invention is sufficient in bending strength and small in firing shrinkage rate and can ensure the invariability of a dimension and a shape and effectively enhance the porosity of a core by adopting the raw materials with different fineness, thereby well improving the core stripping property.
Description
Technical field
The present invention relates generally to precision casting field, relates in particular to a kind of Nano-compound Ceramic Core.
Background technology
The complicated inner cavity of alloy-steel casting is mainly by carrying out moulding with prefabricated ceramic core, and after foundry goods is cast, manages to remove.Its technical process is as follows: Tao Xin prepares, contains wax-pattern preparation, shell processed, shell dewaxing and roasting, alloy casting, the depoling of Tao Xin.As everyone knows, along with the startup of China's development large aircraft project and various new work engine research and development program elements, the body of titanium alloy precision casting, structure and performance thereof are had higher requirement.
At present, research is magnesium oxide, silica-based ceramic core comparatively widely, because core material does not possess, the good chemical reaction inertia of molten titanium alloy and depoling complex process is not difficult to be applied to titanium alloy fine casting field.Due to nano combined, at high temperature there is higher chemical reaction inertia with molten titanium alloy, and the good high-temperature creep resistance of tool, nano combined is a kind of aggregate of ceramic core for titanium alloy fine casting that is well suited for being used as.Caused in recent years related scientific research personnel's concern, as the Chinese invention patent application of publication number 200610028168.9 discloses a kind of preparation method of the nano composite ceramic shell for titanium or titanium alloy precision casting, in this invention, adopting nano composite powder and acetic acid zirconium thereof or silicon sol is that binding agent is made painting slip.Because the shape of titanium alloy becomes increasingly complex, present titanium alloy casting is often with complicated inner cavity, and this integrity that requires core to possess good high-temperature creep resistance and then assurance shape in titanium alloy casting process is also had higher requirement to the performance that removes to core simultaneously.But nano combined stable chemical performance removes and has brought certain difficulty especially for complex-shaped core, to be difficult to remove with mechanical means to core.In order to improve the depoling performance of core, magnesium oxide core material also receives related scientific research personnel's concern, as the Chinese invention patent application of CN 102531648 A discloses a kind of nano composite oxides magnesium matrix ceramic core and preparation method, due to comparatively complicated in titanium alloy precision casting technique, the duration of pouring that is prepared into alloy from the wax-pattern containing Tao Xin is general all more than two weeks, and core in use will contact with water-based paint.After the core chance water that above-mentioned patent is prepared, hydration reaction occurs and cause the defeated and dispersed of core, therefore, above-mentioned core is difficult to be applied to titanium alloy precision casting field.
Summary of the invention
The object of the invention is just to provide a kind of Nano-compound Ceramic Core.
The present invention is achieved by the following technical solutions:
A Nano-compound Ceramic Core, is characterized in that what it was comprised of the raw material of following weight per-cent:
Mineralizer 12-18wt%, softening agent 14-20 wt%, nano silicon 2-3 wt%, nano magnesia 1-2 wt%, Microcrystalline Wax 2-3 wt%, surplus are rare earth clad nano composite granule;
Described mineralizer be a kind of in zirconium dioxide, calcium oxide, silicon-dioxide or two kinds and more than, with any mass ratio, mix and form;
Described softening agent is comprised of the raw material of following weight parts:
Paraffin 82-90, propolis 3-4, alumino silica gel 6-8, sebacic acid propanediol polyester 1-2, aluminium hydrate powder 2-3, Silane coupling agent KH550 0.1-0.2;
By above-mentioned heating paraffin fusing, add propolis, aluminium hydrate powder, Silane coupling agent KH550,300-400 rev/min of dispersed with stirring 10-12 minute, add each raw material of residue, stir, at 80-90 ℃, be incubated standing 3-5 minute, cooling discharging, obtains described softening agent;
The preparation method of described rare earth clad nano composite granule comprises the following steps:
(1) nano aluminium oxide, nano silicon are mixed, join in 100-200 times of deionized water, ultrasonic dispersion, obtains dispersion liquid;
(2) boron nitride powder is mixed with calcium chloride, add Silane coupling agent KH550,1600-2000 rev/min of dispersed with stirring 10-15 minute, ball milling, dries, and obtains particle diameter 60-150 μ m, obtains basic powder;
(3) basic powder is joined in upper dispersion liquid, dispersed with stirring, obtains premixed liquid;
(4) inorganic zirconates and inorganic yttrium salts are usingd to any ratio and mix as rare earth oxide presoma, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned premixed liquid is added in precursor solution, the pH value of regulator solution, to 8-10, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth clad nano composite granule, sintering temperature is 1200-1500 ℃, and the time is 0.5-20h.
2, a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:24-30.
3, a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, described inorganic zirconates is zirconium chloride or zirconium nitrate, and described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
4, a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, and described rare earth oxide precursor solution, its concentration is 0.01-0.4mol/L.
5, a kind of Nano-compound Ceramic Core according to claim 1, it is characterized in that, in the preparation of described rare earth clad nano composite granule, the mass ratio of described boron nitride powder and nano silicon, nano aluminium oxide, calcium chloride is 100:4-5:5-6:2-3.
6, a preparation method for Nano-compound Ceramic Core as claimed in claim 1, is characterized in that comprising the following steps:
(1) above-mentioned nano silicon, nano magnesia, Microcrystalline Wax are mixed, heated and stirred 10-15 minute at 50-60 ℃, adds the 6-10% of above-mentioned rare earth clad nano composite granule weight, and ball milling is abundant, obtains Preblend;
(2) mixer is heated to 120-140 ℃, add softening agent, then under agitation condition, add each raw material of residue, after adding, continue to be uniformly mixed 10-12 hour, carry out as requested moulding, sintering obtains described Nano-compound Ceramic Core, and described sintering temperature is 1300-1600 ℃, and the time is 0.5-20h.
Advantage of the present invention is:
Ceramic core of the present invention has enough bending strengths, percent of firing shrinkage is little, can guarantee the not variability of size and dimension, because employing is the starting material of different fineness, can effectively improve the porosity of core, thereby can be good at improving depoling performance.
Embodiment
Embodiment 1
A Nano-compound Ceramic Core, it is comprised of the raw material of following weight per-cent:
Mineralizer 18wt%, softening agent 20 wt%, nano silicon 3 wt%, nano magnesia 2 wt%, Microcrystalline Wax 3 wt%, surplus are rare earth clad nano composite granule;
Described mineralizer is that the mass ratioes such as zirconium dioxide, calcium oxide, silicon-dioxide mix composition;
Described softening agent is comprised of the raw material of following weight parts:
Paraffin 82, propolis 4, alumino silica gel 8, sebacic acid propanediol polyester 2, aluminium hydrate powder 3, Silane coupling agent KH550 0.2;
By the fusing of above-mentioned heating paraffin, add propolis, aluminium hydrate powder, Silane coupling agent KH550,400 revs/min of dispersed with stirring 12 minutes, add each raw material of residue, stir, and are incubated standing 3-5 minute at 90 ℃, and cooling discharging, obtains described softening agent;
The preparation method of described rare earth clad nano composite granule comprises the following steps:
(1) nano aluminium oxide, nano silicon are mixed, join in 200 times of deionized waters, ultrasonic dispersion, obtains dispersion liquid;
(2) boron nitride powder is mixed with calcium chloride, add Silane coupling agent KH550,2000 revs/min of dispersed with stirring 15 minutes, ball milling, dries, and obtains particle diameter 150 μ m, obtains basic powder;
(3) basic powder is joined in upper dispersion liquid, dispersed with stirring, obtains premixed liquid;
(4) inorganic zirconates and inorganic yttrium salts are usingd to any ratio and mix as rare earth oxide presoma, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned premixed liquid is added in precursor solution, the pH value to 10 of regulator solution, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth clad nano composite granule, sintering temperature is 1500 ℃, and the time is 10h.
A Nano-compound Ceramic Core, in the preparation of described rare earth clad nano composite granule, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:30.
A Nano-compound Ceramic Core, in the preparation of described rare earth clad nano composite granule, described inorganic zirconates is zirconium chloride or zirconium nitrate, described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
A Nano-compound Ceramic Core, in the preparation of described rare earth clad nano composite granule, described rare earth oxide precursor solution, its concentration is 0.4mol/L.
A Nano-compound Ceramic Core, in the preparation of described rare earth clad nano composite granule, the mass ratio of described boron nitride powder and nano silicon, nano aluminium oxide, calcium chloride is 100:5:6:2.
A preparation method for Nano-compound Ceramic Core, comprises the following steps:
(1) above-mentioned nano silicon, nano magnesia, Microcrystalline Wax are mixed, at 60 ℃, heated and stirred is 15 minutes, adds 10% of above-mentioned rare earth clad nano composite granule weight, and ball milling is abundant, obtains Preblend;
(2) mixer is heated to 140 ℃, adds softening agent, then under agitation condition, add each raw material of residue, after adding, continue to be uniformly mixed 12 hours, carry out as requested moulding, sintering obtains described Nano-compound Ceramic Core, described sintering temperature is 1300 ℃, and the time is 7h.
Performance test:
Room temperature bending strength 59MPa, high temperature amount of deflection (being incubated 30min at 1550 ℃) 0.43mm, percent of firing shrinkage 0.55%.
Claims (6)
1. a Nano-compound Ceramic Core, is characterized in that what it was comprised of the raw material of following weight per-cent:
Mineralizer 12-18wt%, softening agent 14-20 wt%, nano silicon 2-3 wt%, nano magnesia 1-2 wt%, Microcrystalline Wax 2-3 wt%, surplus are rare earth clad nano composite granule;
Described mineralizer be a kind of in zirconium dioxide, calcium oxide, silicon-dioxide or two kinds and more than, with any mass ratio, mix and form;
Described softening agent is comprised of the raw material of following weight parts:
Paraffin 82-90, propolis 3-4, alumino silica gel 6-8, sebacic acid propanediol polyester 1-2, aluminium hydrate powder 2-3, Silane coupling agent KH550 0.1-0.2;
By above-mentioned heating paraffin fusing, add propolis, aluminium hydrate powder, Silane coupling agent KH550,300-400 rev/min of dispersed with stirring 10-12 minute, add each raw material of residue, stir, at 80-90 ℃, be incubated standing 3-5 minute, cooling discharging, obtains described softening agent;
The preparation method of described rare earth clad nano composite granule comprises the following steps:
(1) nano aluminium oxide, nano silicon are mixed, join in 100-200 times of deionized water, ultrasonic dispersion, obtains dispersion liquid;
(2) boron nitride powder is mixed with calcium chloride, add Silane coupling agent KH550,1600-2000 rev/min of dispersed with stirring 10-15 minute, ball milling, dries, and obtains particle diameter 60-150 μ m, obtains basic powder;
(3) basic powder is joined in upper dispersion liquid, dispersed with stirring, obtains premixed liquid;
(4) inorganic zirconates and inorganic yttrium salts are usingd to any ratio and mix as rare earth oxide presoma, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned premixed liquid is added in precursor solution, the pH value of regulator solution, to 8-10, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth clad nano composite granule, sintering temperature is 1200-1500 ℃, and the time is 0.5-20h.
2. a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:24-30.
3. a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, described inorganic zirconates is zirconium chloride or zirconium nitrate, and described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
4. a kind of Nano-compound Ceramic Core according to claim 1, is characterized in that, in the preparation of described rare earth clad nano composite granule, and described rare earth oxide precursor solution, its concentration is 0.01-0.4mol/L.
5. a kind of Nano-compound Ceramic Core according to claim 1, it is characterized in that, in the preparation of described rare earth clad nano composite granule, the mass ratio of described boron nitride powder and nano silicon, nano aluminium oxide, calcium chloride is 100:4-5:5-6:2-3.
6. a preparation method for Nano-compound Ceramic Core as claimed in claim 1, is characterized in that comprising the following steps:
(1) above-mentioned nano silicon, nano magnesia, Microcrystalline Wax are mixed, heated and stirred 10-15 minute at 50-60 ℃, adds the 6-10% of above-mentioned rare earth clad nano composite granule weight, and ball milling is abundant, obtains Preblend;
(2) mixer is heated to 120-140 ℃, add softening agent, then under agitation condition, add each raw material of residue, after adding, continue to be uniformly mixed 10-12 hour, carry out as requested moulding, sintering obtains described Nano-compound Ceramic Core, and described sintering temperature is 1300-1600 ℃, and the time is 0.5-20h.
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| CN201410224822.8A CN104072156B (en) | 2014-05-24 | 2014-05-24 | A kind of Nano-compound Ceramic Core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418058A (en) * | 2015-11-16 | 2016-03-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Making method of low-deformation toughened silica-based ceramic core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876272A (en) * | 2006-06-27 | 2006-12-13 | 上海大学 | Preparation method of boron nitride ceramic shell for titanium and titanium alloy precision casting |
| CN101537473A (en) * | 2008-03-20 | 2009-09-23 | 上海市机械制造工艺研究所有限公司 | Ceramic core for silica sol precision casting and manufacturing process thereof |
| EP2554294A2 (en) * | 2011-08-03 | 2013-02-06 | United Technologies Corporation | Hybrid core assembly |
| CN102924062A (en) * | 2012-10-25 | 2013-02-13 | 北京航空航天大学 | Preparation method of calcium-oxide-based ceramic core |
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2014
- 2014-05-24 CN CN201410224822.8A patent/CN104072156B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876272A (en) * | 2006-06-27 | 2006-12-13 | 上海大学 | Preparation method of boron nitride ceramic shell for titanium and titanium alloy precision casting |
| CN101537473A (en) * | 2008-03-20 | 2009-09-23 | 上海市机械制造工艺研究所有限公司 | Ceramic core for silica sol precision casting and manufacturing process thereof |
| EP2554294A2 (en) * | 2011-08-03 | 2013-02-06 | United Technologies Corporation | Hybrid core assembly |
| CN102924062A (en) * | 2012-10-25 | 2013-02-13 | 北京航空航天大学 | Preparation method of calcium-oxide-based ceramic core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418058A (en) * | 2015-11-16 | 2016-03-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Making method of low-deformation toughened silica-based ceramic core |
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| CN104072156B (en) | 2016-03-23 |
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