PL414840A1 - Pouring moulding mixture for the production of layers of ceramic foundry moulds - Google Patents
Pouring moulding mixture for the production of layers of ceramic foundry mouldsInfo
- Publication number
- PL414840A1 PL414840A1 PL414840A PL41484015A PL414840A1 PL 414840 A1 PL414840 A1 PL 414840A1 PL 414840 A PL414840 A PL 414840A PL 41484015 A PL41484015 A PL 41484015A PL 414840 A1 PL414840 A1 PL 414840A1
- Authority
- PL
- Poland
- Prior art keywords
- al2o3
- mixture
- amount
- weight
- nanopowder
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title abstract 10
- 239000000919 ceramic Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000465 moulding Methods 0.000 title abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 15
- 229910052593 corundum Inorganic materials 0.000 abstract 15
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 15
- 239000011230 binding agent Substances 0.000 abstract 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 8
- 239000002245 particle Substances 0.000 abstract 8
- 239000011858 nanopowder Substances 0.000 abstract 7
- 239000000843 powder Substances 0.000 abstract 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 4
- 229910052681 coesite Inorganic materials 0.000 abstract 4
- 229910052906 cristobalite Inorganic materials 0.000 abstract 4
- 239000011159 matrix material Substances 0.000 abstract 4
- 239000002114 nanocomposite Substances 0.000 abstract 4
- 239000000377 silicon dioxide Substances 0.000 abstract 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract 4
- 229910052682 stishovite Inorganic materials 0.000 abstract 4
- 229910052905 tridymite Inorganic materials 0.000 abstract 4
- 239000004815 dispersion polymer Substances 0.000 abstract 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 1
- 229920001353 Dextrin Polymers 0.000 abstract 1
- 239000004375 Dextrin Substances 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 235000019425 dextrin Nutrition 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 229920000609 methyl cellulose Polymers 0.000 abstract 1
- 239000001923 methylcellulose Substances 0.000 abstract 1
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- 229920000058 polyacrylate Polymers 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
Landscapes
- Catalysts (AREA)
Abstract
Lejna mieszanina formierska do produkcji warstw ceramicznych form odlewniczych składa się z osnowy w postaci mieszaniny proszków Al2O3 o dwóch wielkościach cząstek: 030 mesh i 200 mesh albo 030 mesh i 325 mesh albo 200 mesh i 325 mesh dodawanych w proporcjach odpowiednio 50% - 50% wagowych albo 35% - 65% wagowych albo 65% - 35% wagowych, spoiwa głównego w postaci wodnego nanokompozytu zawierającego koloidalny Al2O3 o średniej wielkości cząstek 5 nm - 100 nm i zawartości Al2O3 40% wagowych albo spoiwa głównego w postaci wodnego nanokompozytu zawierającego SiO2 o średniej wielkości cząstek 5 nm - 20 nm i zawartości SiO2 od 25 ÷ 45% wagowych, nanoproszku Al2O3 o wielkości cząstek 5 - 100 nm dodanego w ilości 1 - 10% wag w stosunku do ilości mieszaniny proszków Al2O3 albo nanoproszku ZrO2 o wielkości cząstek 5 - 100 nm dodanego w ilości 1 - 10% wag w stosunku do ilości mieszaniny proszków Al2O3, jednego spoiwa dodatkowego wybranego z grupy: wodorozpuszczalny poli(alkohol winylowy) albo glikol poli(etylenowy) albo metyloceluloza o lepkości 20 - 5000 mPa•s albo karboksymetyloceluloza o lepkości 20 - 3000 mPa•s albo dekstryna o lepkości 20 - 4000 mPa•s albo wodorozcieńczalna dyspersja polimerowa poli(akrylowa) albo dyspersja polimerowa poli(winylowa) albo dyspersja poli(uretanowa) w ilości 6% - 15% objętościowo w stosunku do ilości spoiwa głównego, środka antypiennnego w ilości 0,010 - 0,075% objętościowo w stosunku do ilości dwóch spoiw, środka zwilżającego w ilości 0,010 - 0,075% objętościowo w stosunku do ilości dwóch spoiw, przy czym udział fazy stałej wynosi 60 - 80% wagowych, a udział mieszaniny proszków Al2O3 o różnej wielkości cząstek Al2O3 i nanoproszku Al2O3 albo nanoproszku ZrO2 wylicza się ze wzoru, gdzie: mp- masa mieszaniny proszków Al2O3 o różnej wielkości cząstek Al2O3, stanowiących osnowę i nanoproszków, mr masa wodnego nanokompozytu zawierającego koloidalny Al2O3 albo SiO2, stanowiącego spoiwo główne oraz spoiwa dodatkowego, FL - udział % mieszaniny proszków o różnej wielkości cząstek Al2O3 i nanoproszku w mieszaninie, stanowiących osnowę, przy czym do obliczeń zakłada się udział % mieszaniny proszków Al2O3 oraz nanoproszku, stanowiących osnowę oraz masę wodnego nanokompozytu, zawierającego koloidalny Al2O3 albo SiO2, stanowiącego spoiwo główne.The molding mixture for the production of layers of ceramic casting molds consists of a matrix in the form of a mixture of Al2O3 powders with two particle sizes: 030 mesh and 200 mesh or 030 mesh and 325 mesh or 200 mesh and 325 mesh added in proportions of 50% - 50% by weight respectively or 35% - 65% by weight or 65% - 35% by weight, a main binder in the form of an aqueous nanocomposite containing colloidal Al2O3 with an average particle size of 5 nm - 100 nm and an Al2O3 content of 40% by weight or a main binder in the form of an aqueous nanocomposite containing medium SiO2 particle size 5 nm - 20 nm and SiO2 content from 25 ÷ 45% by weight, Al2O3 nanopowder with a particle size of 5 - 100 nm added in an amount of 1 - 10% by weight relative to the amount of the mixture of Al2O3 powders or ZrO2 nanopowder with a particle size of 5 - 100 nm added in an amount of 1 - 10% by weight relative to the amount of the Al2O3 powder mixture, one additional binder selected from the group: water-soluble poly (vinyl alcohol) or poly (ethylene glycol) or methyl cellulose with a viscosity of 20 - 5000 mPa • s or carboxymethyl cellulose with a viscosity of 20 - 3000 mPa • s or dextrin with a viscosity of 20 - 4000 mPa • s or water-dilutable poly (acrylic) polymer dispersion or poly (vinyl) polymer dispersion or poly (urethane) dispersion in an amount of 6% - 15% by volume in relation to the amount of main binder, antifoaming agent in the amount of 0.010 - 0.075% by volume in relation to the number of two binders, wetting agent in the amount of 0.010 - 0.075 % by volume in relation to the number of two binders, the solid phase proportion being 60 - 80% by weight, and the proportion of the mixture of Al2O3 powders with different particle size Al2O3 and Al2O3 nanopowder or ZrO2 nanopowder is calculated from the formula, where: mp - mass of the Al2O3 powder mixture with different particle size Al2O3, constituting the matrix and nanopowders, mr mass of an aqueous nanocomposite containing colloidal Al2O3 or SiO2, solid new main binder and additional binder, FL -% share of a mixture of powders with different size of Al2O3 particles and nanopowder in the mixture, constituting the matrix, with the calculation assuming the share of% mixture of Al2O3 powders and nanopowder constituting the matrix and mass of the aqueous nanocomposite containing colloidal Al2O3 or SiO2 as the main binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL414840A PL414840A1 (en) | 2015-11-18 | 2015-11-18 | Pouring moulding mixture for the production of layers of ceramic foundry moulds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL414840A PL414840A1 (en) | 2015-11-18 | 2015-11-18 | Pouring moulding mixture for the production of layers of ceramic foundry moulds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL414840A1 true PL414840A1 (en) | 2017-05-22 |
Family
ID=58709083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL414840A PL414840A1 (en) | 2015-11-18 | 2015-11-18 | Pouring moulding mixture for the production of layers of ceramic foundry moulds |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL414840A1 (en) |
-
2015
- 2015-11-18 PL PL414840A patent/PL414840A1/en unknown
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