CN103100661A - High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating - Google Patents
High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating Download PDFInfo
- Publication number
- CN103100661A CN103100661A CN2013100728230A CN201310072823A CN103100661A CN 103100661 A CN103100661 A CN 103100661A CN 2013100728230 A CN2013100728230 A CN 2013100728230A CN 201310072823 A CN201310072823 A CN 201310072823A CN 103100661 A CN103100661 A CN 103100661A
- Authority
- CN
- China
- Prior art keywords
- powder
- temperature resistant
- resistant coating
- ludox
- cobalt aluminate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to a high-temperature resistant coating for refining crystal grains of a casting. The high-temperature resistant coating comprises silica sol and white fused alumina powder as main components. The high-temperature resistant coating is characterized by also comprising cobalt aluminate as the main component, wherein the addition proportion of the cobalt aluminate to the silica sol to the white fused alumina powder is (0.07-0.15):1: (2.4-2.6). The high-temperature resistant coating provided by the invention has the advantages that fine grains of a casting crystal grain refiner are uniformly inlaid in the inner surface of a shell in the shell making process to play a role of catalyzing the formation of a condensation nucleus in the casting pouring, solidification and formation processes, so that the average size of the crystal grains of the casting can be up to 0.4-0.8mm, the grain size can be up to the first-level or third-level, and then, the aim of more conveniently and reliably refining the crystal grains is achieved.
Description
Technical field
The present invention relates to a kind of investment precoat for model casting production, relate in particular to high-temperature resistant coating of a kind of refinement casting crystalline grain and preparation method thereof.
Background technology
At present, the normal investment precoat that adopts of model casting production technology, take the surface layer Ludox that plays bonding effect and refractory powder electro-corundum powder as key component, its additional proportion is 1:2.6 ~ 3.0 in mass ratio; And add wetting agent and defoamer is auxiliary material, and wherein, wetting agent is selected dodecyl sodium sulfate, softex kw or n-octyl alcohol phosphoric acid fat ammonium salt etc. usually, and addition is 3/1000ths of key component gross weight; Defoamer is selected n-octyl alcohol, butyl glycol ether phosphate or the compound defoamer take dimethicone as main body usually, and addition is 2/1000ths of key component gross weight.In application, the surface layer that is used for shell processed after each above-mentioned component is mixed by churned mechanically mode, because not adding the material of refinement casting crystalline grain in its component, so the casting crystalline grain of producing is thicker, the casting crystalline grain average-size mostly is 2.8mm ~ 8.0 mm, grain size number is Pyatyi to eight grade, requires higher foundry goods for grain size, does not easily cause in batches the casting crystalline grain degree up to standard and scrap.And require higher foundry goods usually to adopt to control the moulding by casting temperature to solve for grain size, this just to smelting and pouring process control have relatively high expectations.
Summary of the invention
The object of the present invention is to provide a kind of high-temperature resistant coating of refinement casting crystalline grain, this coating has the effect of refinement casting crystalline grain, also has resistant to elevated temperatures performance simultaneously.
Another object of the present invention is to provide the preparation method of the high-temperature resistant coating of above-mentioned refinement casting crystalline grain, its preparation method is simple to operate, and it is convenient to use.
The first purpose of the present invention is achieved in that
A kind of high-temperature resistant coating of refinement casting crystalline grain, its key component comprises playing surface layer Ludox and the refractory powder fused white corundum powder of bonding effect, it is characterized in that: its key component also comprises the cobalt aluminate powder with the effect of refinement casting crystalline grain, and the additional proportion of cobalt aluminate powder and described Ludox, described white alundum powder are in mass ratio: 0.07 ~ 0.15:1:2.4 ~ 2.6.
Above-mentioned cobalt aluminate powder with the effect of refinement casting crystalline grain, make like this: commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, then through being converted into cobalt aluminate after the high-temperature calcination of at least 1200 ℃, then grinding to form granularity and use less than 320 purpose powders.Such cobalt aluminate powder, when the coating preparation that is used for subsequently, because it has identical or close Granularity Structure and molecular structure with one of the major ingredient that adds white fused alumina powder (or zirconium English powder), be difficult for agglomerating when stirring converges or precipitation, make the coating of preparation have better uniformity, also make the more equal even inner surface that is attached to densely shell of cobalt aluminate powder with refinement casting crystalline grain, in moulding by casting process subsequently, the effect of refinement casting crystalline grain is more obvious.
Above-mentioned high-temperature resistant coating also is added with auxiliary material wetting agent and defoamer; Wherein, wetting agent is selected dodecyl sodium sulfate, hexadecane trimethyl ammonium bromide or n-octyl alcohol phosphoric acid fat ammonium salt etc. usually, and its additional proportion is 3/1000ths of key component gross weight; Defoamer usually select n-octyl alcohol, butyl glycol ether phosphate or commercially available be the compound defoamer of main body by dimethicone, its additional proportion is 2/1000ths of key component gross weight.
Above-mentioned Ludox adopts to contain SiO
2Mass percent is 30% ~ 31.5% the Ludox that is used for surface shell processed, the common commercially available S-830 that has, and it contains SiO
2(mass percent) 31.0% ~ 31.5% (mass percent), Na
2O≤0.50% (mass percent), relative density (20 ℃) 〉=1.21, pH 9.5 ~ 10.5, viscosity (mPa.s) 4 ~ 6.5, average grain diameter (nm) 7 ~ 9 is milky white translucent liquid.
Above-mentioned white alundum powder adopts the commercially available fused white corundum abrasive material of 270 orders ~ 325 purposes, also can adopt the commercially available zirconium English powder of 270 orders ~ 325 purposes to replace.
Above-mentioned cobalt aluminate powder adopts through grind size less than 320 purpose powder.
Another object of the present invention is achieved in that
The preparation method of the high-temperature resistant coating of above-mentioned refinement casting crystalline grain is characterized in that, it carries out according to the following steps:
Add above-mentioned Ludox in container, add while stirring above-mentioned fused white corundum powder or zirconium English powder, add again above-mentioned casting crystalline grain fining agent cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last it is stirred to measuring viscosity at 36s ~ 41s with the normal viscosity flow cup, namely get this high-temperature resistant coating.
The present invention has following beneficial effect:
The invention discloses a kind of high-temperature resistant coating for the refinement casting crystalline grain, the casting crystalline grain fining agent molecule that it is taked is in shell process processed, evenly be embedded in the shell inner surface, play the effect that the catalysis nuclei of condensation form in the process of casting pouring coagulation forming, make the casting crystalline grain average-size can reach 0.4mm ~ 0.8 mm, grain size number reaches one-level to three grade, thus the convenient crystal grain thinning purpose that reaches reliably.Under the condition that does not affect original mode of production, this coating can be applied to the multiple material of casting, except being used for the grain refinement of high-temperature alloy casting, also can be used for the whole or local grain refinement of the material foundry goods such as stainless steel, as brush the sand mold profile, cast after baking is done also can make the whole or local grain refinement of sand foundry goods.And coating of the present invention, the refractoriness of the main additive when selection at high temperature are difficult for qualitative change occurs, thereby have guaranteed the resistance to elevated temperatures of this coating all more than 1650 ℃.In addition, the preparation method of high-temperature resistant coating of the present invention prepares burden, operating process is simple, in actual application, can increase and decrease in proportion according to how many reference formulation of required material amount, has facilitated application.
The specific embodiment
Below by embodiment, the present invention is specifically described; be necessary to be pointed out that at this; following examples only are used for the present invention is further detailed; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to the foregoing invention content.
Embodiment 1
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 30% common commercially available Ludox 24 Kg, 270 orders ~ 325 purpose fused white corundum powder 60Kg, through grind size less than 320 purpose cobalt aluminate powder 3 Kg, common commercially available dodecyl sodium sulfate (wetting agent) 0.261 Kg, n-octyl alcohol (defoamer) 0.174Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described white alundum powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 38s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Cobalt aluminate powder wherein is that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, and then through being converted into cobalt aluminate after the high-temperature calcination of 1200 ℃, then grinding to form granularity and makes less than 320 purpose powders.
Adopt high-temperature resistant coating obtained above to be coated with and be formed on the turbo blade surface layer, all the other each layers coat by traditional coating, prepared shell is after 1050 ℃ of roastings, cast high temperature alloy B1914 material, the foundry goods that obtains is 0.4mm ~ 0.6 mm through Metallographic Analysis average grain size size, crystal grain obtains obvious refinement, has realized the purpose of refinement casting crystalline grain.
Embodiment 2
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 30% Ludox 47.8 Kg, 270 orders ~ 325 purpose fused white corundum powder 120Kg, through grind size less than 320 purpose cobalt aluminate powder 6 Kg, common commercially available dodecyl sodium sulfonate (wetting agent) 0.52 Kg, n-octyl alcohol (defoamer) 0.35 Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described white alundum powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 37s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Cobalt aluminate powder wherein is that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, and then through being converted into cobalt aluminate after the high-temperature calcination of 1210 ℃, then grinding to form granularity and makes less than 320 purpose powders.
Adopt high-temperature resistant coating obtained above to be coated with and be formed on the turbine surface layer, all the other each layers coat by traditional coating, prepared shell is after 950 ℃ of roastings, cast high temperature alloy K213 material, the foundry goods that obtains is 0.5mm ~ 0.7 mm through Metallographic Analysis average grain size size, crystal grain obtains obvious refinement, has realized the purpose of refinement casting crystalline grain.
Embodiment 3
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 31.5% Ludox 36 Kg, 270 orders ~ 325 purpose fused white corundum powder 90Kg, through grind size less than 320 purpose cobalt aluminate powder 4.5Kg, common commercially available hexadecane trimethyl ammonium bromide (wetting agent) 0.39Kg, n-octyl alcohol (defoamer) 0.26Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described white alundum powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 41s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Cobalt aluminate powder wherein is that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, and then through being converted into cobalt aluminate after the high-temperature calcination of 1210 ℃, then grinding to form granularity and makes less than 320 purpose powders.
Adopt high-temperature resistant coating obtained above to coat stainless steel impeller surface layer, all the other each layers coat by traditional coating, prepared shell is after 1100 ℃ of roastings, casting stainless steel SUS316 material, the foundry goods that obtains is 0.8mm ~ 1.2 mm through Metallographic Analysis average grain size size, crystal grain obtains obvious refinement, and grain size number reaches three grades, has realized equally the purpose of refinement casting crystalline grain.Because the needed pouring technology temperature of this foundry goods reaches 1650 ℃ ~ 1680 ℃, the shell that uses high-temperature resistant coating obtained above to coat can satisfy pouring technology temperature needs, can stand the impact of high temperature, has high temperature resistant effect preferably.
Embodiment 4
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 31.5% Ludox 61 Kg, 270 orders ~ 325 purpose fused white corundum powder 150Kg, through grind size less than 320 purpose cobalt aluminate powder 7.5Kg, common commercially available dodecyl sodium sulfonate (wetting agent) 0.66Kg, butyl glycol ether phosphate (defoamer) 0.44Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described white alundum powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 41s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Cobalt aluminate powder wherein is that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, and then through being converted into cobalt aluminate after the high-temperature calcination of 1220 ℃, then grinding to form granularity and makes less than 320 purpose powders.
Adopt high-temperature resistant coating obtained above to coat stainless steel knife-edge guide vane surface layer, all the other each layers coat by traditional coating, prepared shell is after 1200 ℃ of roastings, casting stainless steel ZG1Cr18Ni12Mo2Ti material, the foundry goods that obtains is 0.9mm ~ 1.4 mm through Metallographic Analysis average grain size size, crystal grain obtains obvious refinement, and grain size number reaches three grades to level Four, has realized equally the purpose of refinement casting crystalline grain.Because the needed pouring technology temperature of this foundry goods reaches 1650 ℃ ~ 1680 ℃, the shell that uses high-temperature resistant coating obtained above to coat can satisfy pouring technology temperature needs, can stand the impact of high temperature, has high temperature resistant effect preferably.
Embodiment 5
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 30.65% commercially available S-830 Ludox 70Kg, 270 orders ~ 325 purpose zirconium English powder 180Kg, through grind size less than 320 purpose cobalt aluminate powder 9Kg, common commercially available n-octyl alcohol phosphoric acid fat ammonium salt (wetting agent) 0.78Kg and n-octyl alcohol (defoamer) 0.52Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described zirconium English powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 36s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Cobalt aluminate powder wherein is that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, and then through being converted into cobalt aluminate after the high-temperature calcination of 1200 ℃, then grinding to form granularity and makes less than 320 purpose powders.
Adopt high-temperature resistant coating obtained above evenly brushing on the surface of disappearance model, brush altogether three times, need successively dryly, then lay against in the drying room of 40 ℃ ~ 50 ℃ dry coating 3 ~ 5 hours.Be positioned in the sand frame by technological requirement after taking out, by traditional sand casting flow process sanding type, cast spheroidal graphite cast-iron QT500-7 material.Because the needed pouring technology temperature of this foundry goods reaches 1350 ℃ ~ 1380 ℃, the interior shell of the sand mold that uses high-temperature resistant coating obtained above to coat, can satisfy pouring technology temperature needs, can stand the impact of high temperature, solved because of the low scab defective that causes of conventional coating refractoriness, had high temperature resistant effect preferably.
Embodiment 6
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 30% Ludox 93Kg, 270 orders ~ 325 purpose zirconium English powder 240Kg, through grind size less than 320 purpose cobalt aluminate powder 12 Kg, common commercially available dodecyl sodium sulfonate (wetting agent) 1 Kg, butyl glycol ether phosphate (defoamer) 0.69Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described zirconium English powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 38s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Adopt high-temperature resistant coating obtained above evenly brushing on a kind of surface of the sand mold core for the motor cylinder block foundry goods, brush altogether three times, then lay against in drying room dry coating 3 ~ 5 hours.By the technological requirement mould assembling, pour into a mould spheroidal graphite cast-iron QT500-7 material after taking out.Because this foundry goods inner surface of cylinder block grain size is had relatively high expectations, use the casting crystalline grain of conventional coating material production thicker, the casting crystalline grain average-size mostly is 4.0mm ~ 8.0 mm, in actual the use life-span shorter, can't reach instructions for use.Use the surface of high-temperature resistant coating brushing core obtained above, the foundry goods of acquisition is 1.2mm ~ 2.7 mm through Metallographic Analysis average grain size size, and crystal grain obtains obvious refinement, has realized the purpose of refinement casting crystalline grain, has reached instructions for use.Simultaneously also can satisfy higher pouring technology temperature needs, can stand the impact of high temperature, solve because of the low scab defective that causes of conventional coating refractoriness, have high temperature resistant effect preferably.
Embodiment 7
A kind of high-temperature resistant coating of refinement casting crystalline grain, it is comprised of following material: contain SiO
2Mass percent is 30% Ludox 116Kg, 270 orders ~ 325 purpose zirconium English powder 300Kg, through grind size less than 320 purpose cobalt aluminate powder 15 Kg, common commercially available hexadecane trimethyl ammonium bromide (wetting agent) 1.3Kg, n-octyl alcohol (defoamer) 0.86Kg; This high-temperature resistant coating specifically makes according to the following steps:
Add described Ludox in container, add while stirring described zirconium English powder, add described cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last this high-temperature resistant coating is stirred with homogenizer, record viscosity at 36s with the normal viscosity flow cup, namely obtain this high-temperature resistant coating.
Adopt high-temperature resistant coating obtained above evenly brushing at a kind of inner surface of the sand mold for hub cast, brush altogether three times, then dry coating.By the technological requirement mould assembling, cast cast steel ZG42CrMo material.Because this casting crystalline grain degree is had relatively high expectations, use the casting crystalline grain of conventional coating material production thicker, the casting crystalline grain average-size mostly is 4.0mm ~ 8.0 mm, in actual the use life-span shorter, can't reach instructions for use.Use the inner surface of high-temperature resistant coating brushing sand mold obtained above, the foundry goods of acquisition is 2.2mm ~ 3.7 mm through Metallographic Analysis average grain size size, and crystal grain obtains obvious refinement, has realized the purpose of refinement casting crystalline grain, has reached instructions for use.Simultaneously also can satisfy higher pouring technology temperature needs, can stand the impact of high temperature, solve because of the low scab defective that causes of conventional coating refractoriness, have high temperature resistant effect preferably.
Claims (8)
1. the high-temperature resistant coating of a refinement casting crystalline grain, its key component comprises Ludox and white alundum powder, it is characterized in that: its key component also comprises the cobalt aluminate powder, and the additional proportion of cobalt aluminate powder and described Ludox, described white alundum powder are in mass ratio: 0.07 ~ 0.15:1:2.4 ~ 2.6.
2. high-temperature resistant coating according to claim 1, it is characterized in that: described cobalt aluminate powder, that commercially available white fused alumina powder and the cobalt oxide powder mass ratio according to 1:1 is evenly mixed, then through being converted into cobalt aluminate after the high-temperature calcination of at least 1200 ℃, then grinding to form granularity and make less than 320 purpose powders.
3. high-temperature resistant coating according to claim 1 and 2, it is characterized in that: described high-temperature resistant coating also is added with wetting agent and defoamer; Wherein, wetting agent is selected dodecyl sodium sulfate, hexadecane trimethyl ammonium bromide or n-octyl alcohol phosphoric acid fat ammonium salt, and its additional proportion is 3/1000ths of key component gross weight; Defoamer select n-octyl alcohol, butyl glycol ether phosphate or commercially available be the compound defoamer of main body by dimethicone, its additional proportion is 2/1000ths of key component gross weight.
4. high-temperature resistant coating according to claim 1 and 2 is characterized in that: described Ludox, adopt to contain SiO
2Mass percent is 30% ~ 31.5% Ludox; Described white alundum powder adopts the commercially available fused white corundum abrasive material of 270 orders ~ 325 purposes; Described cobalt aluminate powder adopts through grind size less than 320 purpose powder.
5. high-temperature resistant coating according to claim 3 is characterized in that: described Ludox, adopt to contain SiO
2Mass percent is 30% ~ 31.5% Ludox; Described white alundum powder adopts the commercially available fused white corundum abrasive material of 270 orders ~ 325 purposes; Described cobalt aluminate powder adopts through grind size less than 320 purpose powder.
6. high-temperature resistant coating according to claim 1 and 2 is characterized in that: described Ludox, and adopting commercially available Ludox is S-830, it contains SiO
231.0% ~ 31.5%, Na
2O≤0.50%, relative density (20 ℃) 〉=1.21, pH 9.5 ~ 10.5, viscosity (mPa.s) 4 ~ 6.5, average grain diameter (nm) 7 ~ 9, milky white translucent liquid; Described white alundum powder adopts the commercially available zirconium English powder of 270 orders ~ 325 purposes to replace; Described cobalt aluminate powder adopts through grind size less than 320 purpose powder.
7. high-temperature resistant coating according to claim 3 is characterized in that: described Ludox, and adopting commercially available Ludox is S-830, it contains SiO
231.0% ~ 31.5%, Na
2O≤0.50%, relative density (20 ℃) 〉=1.21, pH 9.5 ~ 10.5, viscosity (mPa.s) 4 ~ 6.5, average grain diameter (nm) 7 ~ 9, milky white translucent liquid; Described white alundum powder adopts the commercially available zirconium English powder of 270 orders ~ 325 purposes to replace; Described cobalt aluminate powder adopts through grind size less than 320 purpose powder.
8. the preparation method of according to claim 1-7 arbitrary described high-temperature resistant coatings is characterized in that it carries out according to the following steps:
Add described Ludox in container, add while stirring described fused white corundum powder or zirconium English powder, add again described casting crystalline grain fining agent cobalt aluminate powder after stirring, add while stirring wetting agent, defoamer, at last it is stirred to measuring viscosity at 36s ~ 41s with the normal viscosity flow cup, namely get this high-temperature resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100728230A CN103100661A (en) | 2013-03-07 | 2013-03-07 | High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100728230A CN103100661A (en) | 2013-03-07 | 2013-03-07 | High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103100661A true CN103100661A (en) | 2013-05-15 |
Family
ID=48309047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100728230A Pending CN103100661A (en) | 2013-03-07 | 2013-03-07 | High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103100661A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353786A (en) * | 2014-11-10 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of shell with long and thin blades of investment casting aero-engine |
| CN104368757A (en) * | 2014-11-07 | 2015-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-walled circular type investment casting shell and preparation method thereof |
| CN104923729A (en) * | 2015-06-24 | 2015-09-23 | 西安航空动力股份有限公司 | Manufacturing method of composite shell of large diffuser precision casting |
| CN105344923A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Primary layer coating for automobile precise casting connecting piece |
| CN106111918A (en) * | 2016-06-29 | 2016-11-16 | 无锡康柏斯机械科技有限公司 | A kind of casting technique of automotive hub |
| CN107779037A (en) * | 2017-09-30 | 2018-03-09 | 镇江中焱数控设备有限公司 | A kind of preparation technology of Digit Control Machine Tool Special wear-resistant coating |
| CN107866517A (en) * | 2017-11-30 | 2018-04-03 | 中国科学院金属研究所 | Surface layer slurry with high-temperature stability and its application for the casting of big module |
| CN109338084A (en) * | 2018-11-23 | 2019-02-15 | 安徽应流集团霍山铸造有限公司 | Polished surface guard method when a kind of pair of steel-casting post weld heat treatment |
| CN110653334A (en) * | 2019-10-28 | 2020-01-07 | 马鞍山市三川机械制造有限公司 | Functional sol coating for sand casting |
| CN110871257A (en) * | 2018-08-29 | 2020-03-10 | 中国科学院金属研究所 | Preparation method and application of graphite activated ceramic surface layer slurry |
| CN110871259A (en) * | 2018-08-29 | 2020-03-10 | 中国科学院金属研究所 | Preparation method and application of aluminum activated ceramic surface layer slurry |
| CN111438331A (en) * | 2020-05-13 | 2020-07-24 | 中国航发北京航空材料研究院 | Method for controlling grain size of turbine blade |
| CN112317689A (en) * | 2020-10-23 | 2021-02-05 | 中国科学院金属研究所 | Method for reducing high-temperature alloy casting microscopic shrinkage porosity |
| CN114346170A (en) * | 2021-12-20 | 2022-04-15 | 中国船舶重工集团公司第十二研究所 | Method for investment casting of high-temperature alloy casting |
| CN114350186A (en) * | 2021-12-23 | 2022-04-15 | 东方电气集团东方汽轮机有限公司 | Cobalt aluminate coating, ceramic core and preparation method |
| CN114544631A (en) * | 2022-02-25 | 2022-05-27 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN115069979A (en) * | 2022-06-09 | 2022-09-20 | 中国航发北京航空材料研究院 | Process method for inhibiting columnar crystals on surface of inner cavity of isometric crystal hollow turbine blade |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984494A (en) * | 1962-04-09 | 1965-02-24 | Howe Sound Co | Improvements in making fine grained castings |
| GB1011174A (en) * | 1963-11-19 | 1965-11-24 | Union Carbide Corp | Manufacture of fine grain castings |
| CN101417322A (en) * | 2007-10-24 | 2009-04-29 | 大连核心铸造技术工程研究所 | Iron base high-temperature alloy surface refiner |
| CN101823123A (en) * | 2009-10-30 | 2010-09-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Manufacturing method of shangdian soil type shell used for heavy gas turbine plant guide vane investment casting |
| CN102366820A (en) * | 2011-10-21 | 2012-03-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of complex large thin-walled Ni3Al alloy cast |
-
2013
- 2013-03-07 CN CN2013100728230A patent/CN103100661A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984494A (en) * | 1962-04-09 | 1965-02-24 | Howe Sound Co | Improvements in making fine grained castings |
| GB1011174A (en) * | 1963-11-19 | 1965-11-24 | Union Carbide Corp | Manufacture of fine grain castings |
| CN101417322A (en) * | 2007-10-24 | 2009-04-29 | 大连核心铸造技术工程研究所 | Iron base high-temperature alloy surface refiner |
| CN101823123A (en) * | 2009-10-30 | 2010-09-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Manufacturing method of shangdian soil type shell used for heavy gas turbine plant guide vane investment casting |
| CN102366820A (en) * | 2011-10-21 | 2012-03-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of complex large thin-walled Ni3Al alloy cast |
Non-Patent Citations (1)
| Title |
|---|
| 蒋育华: ""涡轮叶片熔模铸造复合型壳的结构设计和试验"", 《铸造》 * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368757A (en) * | 2014-11-07 | 2015-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-walled circular type investment casting shell and preparation method thereof |
| CN104368757B (en) * | 2014-11-07 | 2016-07-13 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of thin-wall ring investment-casting shell and preparation method thereof |
| CN104353786A (en) * | 2014-11-10 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of shell with long and thin blades of investment casting aero-engine |
| CN104923729A (en) * | 2015-06-24 | 2015-09-23 | 西安航空动力股份有限公司 | Manufacturing method of composite shell of large diffuser precision casting |
| CN105344923A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Primary layer coating for automobile precise casting connecting piece |
| CN106111918A (en) * | 2016-06-29 | 2016-11-16 | 无锡康柏斯机械科技有限公司 | A kind of casting technique of automotive hub |
| CN106111918B (en) * | 2016-06-29 | 2018-03-06 | 江苏康柏斯机械科技有限公司 | A kind of casting technique of automotive hub |
| CN107779037A (en) * | 2017-09-30 | 2018-03-09 | 镇江中焱数控设备有限公司 | A kind of preparation technology of Digit Control Machine Tool Special wear-resistant coating |
| CN107866517A (en) * | 2017-11-30 | 2018-04-03 | 中国科学院金属研究所 | Surface layer slurry with high-temperature stability and its application for the casting of big module |
| CN110871257B (en) * | 2018-08-29 | 2021-03-26 | 中国科学院金属研究所 | Preparation method and application of graphite activated ceramic surface layer slurry |
| CN110871257A (en) * | 2018-08-29 | 2020-03-10 | 中国科学院金属研究所 | Preparation method and application of graphite activated ceramic surface layer slurry |
| CN110871259A (en) * | 2018-08-29 | 2020-03-10 | 中国科学院金属研究所 | Preparation method and application of aluminum activated ceramic surface layer slurry |
| CN110871259B (en) * | 2018-08-29 | 2021-03-26 | 中国科学院金属研究所 | Preparation method and application of aluminum activated ceramic surface layer slurry |
| CN109338084A (en) * | 2018-11-23 | 2019-02-15 | 安徽应流集团霍山铸造有限公司 | Polished surface guard method when a kind of pair of steel-casting post weld heat treatment |
| CN110653334A (en) * | 2019-10-28 | 2020-01-07 | 马鞍山市三川机械制造有限公司 | Functional sol coating for sand casting |
| CN111438331A (en) * | 2020-05-13 | 2020-07-24 | 中国航发北京航空材料研究院 | Method for controlling grain size of turbine blade |
| CN112317689A (en) * | 2020-10-23 | 2021-02-05 | 中国科学院金属研究所 | Method for reducing high-temperature alloy casting microscopic shrinkage porosity |
| CN112317689B (en) * | 2020-10-23 | 2021-11-05 | 中国科学院金属研究所 | Method for reducing high-temperature alloy casting microscopic shrinkage porosity |
| CN114346170A (en) * | 2021-12-20 | 2022-04-15 | 中国船舶重工集团公司第十二研究所 | Method for investment casting of high-temperature alloy casting |
| CN114350186A (en) * | 2021-12-23 | 2022-04-15 | 东方电气集团东方汽轮机有限公司 | Cobalt aluminate coating, ceramic core and preparation method |
| CN114544631A (en) * | 2022-02-25 | 2022-05-27 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN114544631B (en) * | 2022-02-25 | 2023-03-14 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN115069979A (en) * | 2022-06-09 | 2022-09-20 | 中国航发北京航空材料研究院 | Process method for inhibiting columnar crystals on surface of inner cavity of isometric crystal hollow turbine blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103100661A (en) | High-temperature resistant coating for refining crystal grains of casting and preparation method of high-temperature resistant coating | |
| CN101590513B (en) | Method for precise composite casting evaporative pattern | |
| CN102039375B (en) | Method for quickly manufacturing high-temperature alloy hollow blade casting | |
| CN102366816A (en) | Preparation method of water-based coating for lost foam casting | |
| CN108941456A (en) | Based on the shell and its preparation method that vitreous silica, surface compact are smooth | |
| CN105583365A (en) | Evaporative pattern casting method for diesel engine casing | |
| CN101927318A (en) | High strength precoated sand | |
| CN109909448B (en) | Preparation method of foam model and method for preparing metal matrix composite material | |
| CN104368757A (en) | Thin-walled circular type investment casting shell and preparation method thereof | |
| CN105268907B (en) | A kind of steel-casting graphite resin sand and preparation method thereof | |
| CN103506566A (en) | Coating for lost foam casting, and preparation method thereof | |
| CN102240776A (en) | Coating for lost mould cast steel and manufacture method thereof | |
| CN109734425A (en) | A kind of selective laser quick molding method of complex phase ceramic casting mold and products thereof | |
| CN105537503A (en) | Sand burning preventive precoated sand for casting of turbine casing | |
| CN107377865A (en) | A kind of novel film coating sand and preparation method thereof | |
| CN105108054B (en) | A kind of precision casting transition zone coating and its preparation method and application for shell processed | |
| CN105945227A (en) | Precise casting technology for fusion mold | |
| CN110385400A (en) | A kind of process for dewaxing of 3D printing PS powder wax-pattern | |
| CN110465622A (en) | Wind-driven generator S. G. Cast Iron Wheel Hub foundry facing and preparation method and application | |
| CN107671258B (en) | A kind of vacuum centrifugal casting preparation method of zirconium-base amorphous alloy thin-wall part | |
| CN102371336A (en) | Water-based coating for lost foam casting | |
| JPH10166105A (en) | Investment casting improving as-cast surface finishing | |
| CN102836951B (en) | Aluminum alloy EPC (Expendable Pattern Casting) coating and preparation method thereof | |
| CN102836953A (en) | Cast iron lost foam coating and preparation method thereof | |
| CN111375731B (en) | Integral preparation process of large-scale framework high-temperature titanium alloy casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |