CN116329474A - Casting coating and preparation method thereof - Google Patents
Casting coating and preparation method thereof Download PDFInfo
- Publication number
- CN116329474A CN116329474A CN202310274842.5A CN202310274842A CN116329474A CN 116329474 A CN116329474 A CN 116329474A CN 202310274842 A CN202310274842 A CN 202310274842A CN 116329474 A CN116329474 A CN 116329474A
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- CN
- China
- Prior art keywords
- silica sol
- good
- sand
- powder
- aluminum sulfate
- 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.)
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- 239000011248 coating agent Substances 0.000 title claims abstract description 30
- 238000000576 coating method Methods 0.000 title claims abstract description 30
- 238000005266 casting Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 27
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000004743 Polypropylene Substances 0.000 claims abstract description 17
- -1 polypropylene Polymers 0.000 claims abstract description 17
- 229920001155 polypropylene Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 14
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000013530 defoamer Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- 238000003756 stirring Methods 0.000 claims description 21
- 238000000227 grinding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 abstract description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 6
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a casting coating and a preparation method thereof, wherein the casting coating comprises zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin, raw sand and a defoaming agent, and the components are mixed according to the mass ratio: 30-40% of zircon powder, 10-15% of graphite powder, 2-5% of aluminum sulfate, 15-20% of ethanol, 10-15% of silica sol, 5-10% of polypropylene resin, 10-20% of raw sand and 0.2-1% of defoamer. According to the technical scheme, the aluminum sulfate enhances the anti-seepage performance of the coating, aluminum sulfate can be decomposed into aluminum oxide, sulfur trioxide and sulfur dioxide under high temperature, and the aluminum oxide increases the anti-seepage performance of the coating on the surface of the sand mold. The silica sol has good high temperature resistance, and the silica sol is adopted as the binder, so that the adhesive effect is good and the heat preservation performance is good. And polypropylene resin is used as a binder, so that the adhesive force of the paint is enhanced. And the defoaming agent is adopted, so that the defoaming effect is good, and the quality of the coating is good. Through the mutual synergistic effect of the components and the steps, the adhesive property is good, the heat preservation performance is good, and the practicability is good.
Description
Technical Field
The invention relates to the technical field of casting, in particular to a casting coating and a preparation method thereof.
Background
The casting is a process method for pouring, injection or sucking molten metal into a mold cavity, obtaining a casting with a certain shape and performance after solidification, is the most original and modern process, and has very wide application. The coating is a material which is coated on the surface of a protected or decorated object and can form a continuous film firmly attached to the coated object, thereby protecting, decorating, marking and other special functions (such as electric insulation, pollution prevention, drag reduction, heat insulation, radiation resistance, electric conduction, magnetic conduction and the like). Therefore, the method is widely applied to industry and agriculture, national defense, scientific research and people's life.
Casting paint is divided into: water-based paint and alcohol-based paint. The alcohol-based paint has: after the brushing is ignited, the paint layer on the surface of the core can be automatically dried without entering a drying kiln; the use is convenient, and the production period is short; can be applied to the molding and core of sodium silicate sand, etc. However, alcohol-based paint has some disadvantages such as poor paint adhesion, poor heat insulation and poor practicality.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the casting coating with good adhesiveness, good heat preservation performance and good practicability and the preparation method thereof.
In order to achieve the above purpose, the present invention provides the following technical solutions: the casting coating comprises zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin, raw sand and defoamer, wherein the components are mixed according to the mass ratio: 30-40% of zircon powder, 10-15% of graphite powder, 2-5% of aluminum sulfate, 15-20% of ethanol, 10-15% of silica sol, 5-10% of polypropylene resin, 10-20% of raw sand and 0.2-1% of defoamer.
Preferably, the raw sand consists of 5-15% of iron mud and 85-95% of quartz sand in percentage by mass.
Preferably, the defoaming agent is n-butanol, and the defoaming agent accounts for 0.5% by mass.
Preferably, the weight percentages of the zircon powder, the graphite powder, the aluminum sulfate 4.5%, the ethanol 18%, the silica sol 15%, the polypropylene resin 8% and the raw sand 12% are respectively calculated.
Preferably, the silica sol is an alkaline silica sol having a viscosity of 4.5-5.0 x 10 at 20 DEG C -3 Pa·s。
The invention also provides a preparation method of the casting coating, which comprises the following steps:
(1) Grinding: weighing raw sand, putting the raw sand into a ball mill, and grinding to prepare mortar;
(2) Pulverizing: putting the prepared mortar into a baking oven for baking at 80-100 ℃, and then grinding the baked sand to obtain sand powder;
(3) Stirring: adding zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin and sand powder into a stirring container, setting the rotation speed of a stirring blade of the stirring container to 300-500 rpm, and stirring for 20-40 minutes;
(4) Defoaming: adding the defoaming agent into the stirring container, and stirring uniformly to obtain the casting coating.
Compared with the prior art, the invention has the following beneficial effects:
(1) Aluminum sulfate enhances the anti-seepage performance of the coating, aluminum sulfate can be decomposed into aluminum oxide, sulfur trioxide and sulfur dioxide under high temperature, and the aluminum oxide increases the anti-seepage performance of the coating on the surface of the sand mold.
(2) The silica sol has good high temperature resistance, and the silica sol is adopted as the binder, so that the adhesive effect is good and the heat preservation performance is good.
(3) And polypropylene resin is used as a binder, so that the adhesive force of the paint is enhanced.
(4) And the defoaming agent is adopted, so that the defoaming effect is good, and the quality of the coating is good.
The coating prepared by the method has the advantages of simple preparation process, strong operability, good adhesiveness, good heat preservation performance and good practicability through the mutual synergistic effect of the components and the steps.
The invention is further described below with reference to the drawings and specific examples.
Drawings
Fig. 1 is a schematic flow chart of an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like are presented, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
Referring to fig. 1, the casting coating disclosed by the invention comprises zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin, raw sand and a defoaming agent, wherein the components are mixed according to the mass ratio: 30-40% of zircon powder, 10-15% of graphite powder, 2-5% of aluminum sulfate, 15-20% of ethanol, 10-15% of silica sol, 5-10% of polypropylene resin, 10-20% of raw sand and 0.2-1% of defoamer.
Preferably, the raw sand consists of 5-15% of iron mud and 85-95% of quartz sand in percentage by mass.
Preferably, the defoaming agent is n-butanol, and the defoaming agent accounts for 0.5% by mass.
Preferably, the weight percentages of the zircon powder, the graphite powder, the aluminum sulfate 4.5%, the ethanol 18%, the silica sol 15%, the polypropylene resin 8% and the raw sand 12% are respectively calculated.
Preferably, the silica sol is an alkaline silica sol having a viscosity of 4.5-5.0 x 10 at 20 DEG C -3 Pa·s。
The invention also provides a preparation method of the casting coating, which comprises the following steps:
(1) Grinding: weighing raw sand, putting the raw sand into a ball mill, and grinding to prepare mortar;
(2) Pulverizing: putting the prepared mortar into a baking oven for baking at 80-100 ℃, and then grinding the baked sand to obtain sand powder;
(3) Stirring: adding zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin and sand powder into a stirring container, setting the rotation speed of a stirring blade of the stirring container to 300-500 rpm, and stirring for 20-40 minutes;
(4) Defoaming: adding the defoaming agent into the stirring container, and stirring uniformly to obtain the casting coating.
Compared with the prior art, the invention has the following beneficial effects:
(1) Aluminum sulfate enhances the anti-seepage performance of the coating, aluminum sulfate can be decomposed into aluminum oxide, sulfur trioxide and sulfur dioxide under high temperature, and the aluminum oxide increases the anti-seepage performance of the coating on the surface of the sand mold.
(2) The silica sol has good high temperature resistance, and the silica sol is adopted as the binder, so that the adhesive effect is good and the heat preservation performance is good.
(3) And polypropylene resin is used as a binder, so that the adhesive force of the paint is enhanced.
(4) And the defoaming agent is adopted, so that the defoaming effect is good, and the quality of the coating is good.
The coating prepared by the method has the advantages of simple preparation process, strong operability, good adhesiveness, good heat preservation performance and good practicability through the mutual synergistic effect of the components and the steps.
The foregoing embodiments are provided for further explanation of the present invention and are not to be construed as limiting the scope of the present invention, and some insubstantial modifications and variations of the present invention, which are within the scope of the invention, will be suggested to those skilled in the art in light of the foregoing teachings.
Claims (6)
1. A casting coating comprises zircon powder, graphite powder, aluminum sulfate and ethanol, and is characterized in that: the foam-removing agent also comprises silica sol, polypropylene resin, raw sand and a defoaming agent, wherein the components are mixed according to the mass ratio: 30-40% of zircon powder, 10-15% of graphite powder, 2-5% of aluminum sulfate, 15-20% of ethanol, 10-15% of silica sol, 5-10% of polypropylene resin, 10-20% of raw sand and 0.2-1% of defoamer.
2. A casting coating according to claim 1, wherein: the raw sand consists of 5-15% of iron mud and 85-95% of quartz sand according to mass percent.
3. A casting coating according to claim 2, wherein: the defoaming agent is n-butanol, and the defoaming agent accounts for 0.5 percent by mass.
4. A casting coating according to claim 3, wherein: according to the mass percentage, 30% of zircon powder, 12% of graphite powder, 4.5% of aluminum sulfate, 18% of ethanol, 15% of silica sol, 8% of polypropylene resin and 12% of raw sand.
5. A casting coating according to claim 4, wherein: the silica sol is alkaline silica sol, and the viscosity of the silica sol at 20 ℃ is 4.5-5.0 x 10 -3 Pa·s。
6. A method of producing a casting dope as claimed in claim 1 or 5, wherein: the method comprises the following steps:
(1) Grinding: weighing raw sand, putting the raw sand into a ball mill, and grinding to prepare mortar;
(2) Pulverizing: putting the prepared mortar into a baking oven for baking at 80-100 ℃, and then grinding the baked sand to obtain sand powder;
(3) Stirring: adding zircon powder, graphite powder, aluminum sulfate, ethanol, silica sol, polypropylene resin and sand powder into a stirring container, setting the rotation speed of a stirring blade of the stirring container to 300-500 rpm, and stirring for 20-40 minutes;
(4) Defoaming: adding the defoaming agent into the stirring container, and stirring uniformly to obtain the casting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310274842.5A CN116329474A (en) | 2023-03-17 | 2023-03-17 | Casting coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310274842.5A CN116329474A (en) | 2023-03-17 | 2023-03-17 | Casting coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116329474A true CN116329474A (en) | 2023-06-27 |
Family
ID=86892454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310274842.5A Pending CN116329474A (en) | 2023-03-17 | 2023-03-17 | Casting coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116329474A (en) |
-
2023
- 2023-03-17 CN CN202310274842.5A patent/CN116329474A/en active Pending
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