CN109181422B - Special coating for sand mold produced by using fused brick grinding powder as main raw material - Google Patents
Special coating for sand mold produced by using fused brick grinding powder as main raw material Download PDFInfo
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- CN109181422B CN109181422B CN201810931751.3A CN201810931751A CN109181422B CN 109181422 B CN109181422 B CN 109181422B CN 201810931751 A CN201810931751 A CN 201810931751A CN 109181422 B CN109181422 B CN 109181422B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention relates to a sand mold special coating produced by using electric melting brick grinding powder as a main raw material, which adopts the technical scheme that the coating comprises the following raw materials by weight: 5.3-6.7kg of water, 10.75-14.75kg of brick grinding powder, 6-10g of xanthan gum and 38-42g of polyethylene, wherein the preparation method of the brick grinding powder comprises the following steps: the method has the advantages that the preparation cost of the sand mold coating of the electric melting brick is greatly reduced, the coating cost can be saved by about 200 yuan per ton of the electric melting brick, a large amount of the grinding brick powder which cannot be reused in the production process can be completely recycled, the iron content in the grinding brick powder is removed by removing iron by the strong magnetism, the melting point of the grinding brick powder is improved, and the high temperature resistant requirement of the high temperature resistant coating of the electric melting brick sand mold can be met. Not only prevents the gas generated during resin combustion from polluting the brick surface, but also enables the hard shell formed by the coating at high temperature to smoothly and naturally fall off during brick discharging, and improves the efficiency of brick surface cleaning.
Description
Technical Field
The invention relates to a zirconia corundum fused brick coating, in particular to a coating special for a sand mold, which is produced by taking fused brick grinding powder as a main raw material.
Background
In order to produce higher-quality electric melting bricks, the sand mold produced by the electric melting bricks at present is upgraded to a resin sand mold, the resin sand mold can generate carbon dioxide gas and other gases under the high-temperature state in the casting process, the gas can make the brick surface green and the brick surface have many pores, in order to avoid the defects, the inner core of the sand mould needs to be coated with high temperature resistant paint, the gas is isolated from the surface of the electric melting brick by a coating, the high temperature paint used by the sand mould of the electric melting brick is water-based paint made of zirconium main material and other auxiliary materials, the cost of the paint is very high, the price of zirconium high temperature resistant finished paint per ton of the market is 15000 yuan, the consumption of 20 kg per ton of sand mould paint is reduced to 300 yuan, the investment is a great investment in the production process of the electric melting brick, and the investment occupies a certain proportion of profit of selling the electric melting brick, so the cost of the sand mold coating of the electric melting brick is imperative to be reduced.
The electric smelting brick blank brick needs finish machining, makes the electric smelting brick reach final accurate size specification, and the grinding process is that the electric smelting brick grinds through the diamond grinding apparatus, and in order to avoid the high temperature that the friction formed during the grinding, consequently need the circulating water to play the cooling effect when grinding, the abrasive brick powder that grinds down can enter into circulating water sedimentation tank along with the rivers, and the grinding output of per ton brick is about 10 kilograms, and 1 ten thousand tons of electric smelting bricks of annual output will produce 100 tons of abrasive brick powder. Because the grinding brick powder contains metal impurities and other impurities (the components of the grinding brick powder are not different from the components of bricks, and the iron content ground by a diamond grinding tool in the grinding process is only mixed in the grinding brick powder, so that the use value of the grinding brick powder is greatly reduced), the grinding brick powder belongs to waste materials generated in the production of the electric melting brick and cannot be used as a production raw material of the electric melting brick again, so that the waste materials are huge loss in the production process, and the effective utilization of the grinding brick powder in the production of the electric melting brick is a subject inevitably faced by enterprises.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention aims to provide the special coating for the sand mold, which is produced by taking the electric melting brick grinding powder as the main raw material, and can effectively solve the problems of production of the coating by adopting the electric melting brick grinding powder and cost reduction.
The technical scheme of the invention is as follows: a sand mold special coating produced by using electric melting brick grinding powder as a main raw material comprises the following raw materials by weight: 5.3-6.7kg of water, 10.75-14.75kg of brick grinding powder, 6-10g of xanthan gum and 38-42g of polyethylene.
Preferably, the feed comprises the following raw materials by weight: 6kg of water, 12.75kg of grinding brick powder, 8g of xanthan gum and 40g of polyethylene.
The brick grinding powder mainly comprises the following components in percentage by weight: 17.48% of silicon, 50.89% of aluminum, 27.56% of zirconium, 1.35% of iron, 1.46% of sodium and the balance of other components (elements and/or impurities);
the preparation method of the brick grinding powder comprises the following steps: drying the brick grinding powder, and then carrying out a deferrization procedure in a strong magnetic deferrization device to control the weight percentage of iron in the brick grinding powder to be less than 0.05 percent.
A preparation method of a special coating for sand molds comprises the following steps:
(1) 4.5-5.5kg of water is poured into a stirrer, 250g of tile grinding powder and 6-10g of xanthan gum are added, and the materials are stirred until the materials are uniformly mixed;
(2) adding the rest of the grinding brick powder into the mixture prepared in the step (1), and stirring uniformly;
(3) pouring 0.8-1.2kg of water into a pot, adding 38-42g of polyethylene, placing on a fire, and decocting until the polyethylene is completely melted;
(4) and (3) pouring the polyethylene solution in the step (3) into the mixture prepared in the step (2) while the polyethylene solution is hot, and uniformly stirring to obtain the polyethylene-polyethylene composite material.
Preferably, the Baume degree of the prepared special coating for the sand mold is 79-82.
The invention has reasonable formula, greatly reduces the manufacturing cost of the coating of the sand mold of the electric melting brick, can save about 200 yuan for each ton of electric melting brick, can save about 200 ten thousand yuan for ten thousand tons of electric melting brick sand molds, can recycle a large amount of grinding brick powder which can not be reused in the production process, greatly improves the recycling value of the grinding brick powder, reduces the melting point when the grinding brick powder contains metal impurities, influences the quality of the brick surface, but removes the iron content in the grinding brick powder by strong magnetic iron removal, improves the melting point of the grinding brick powder, can reach about 1690 ℃ to 1710 ℃, and can meet the high temperature resistant requirement of the high temperature resistant coating of the electric melting brick sand mold. The temperature of the brick grinding powder is just the sintering temperature, so the suitability of the brick grinding powder as sand mold coating is higher, a layer of hard shell is formed after the coating is sintered, gas generated during resin combustion is prevented from polluting the brick surface, the hard shell formed by the coating at high temperature can smoothly and naturally fall off during brick discharging, the brick surface is more convenient to clean, the efficiency of cleaning the brick surface is improved, and the brick grinding powder is an innovation on the electric melting brick sand mold coating and has good social and economic benefits.
Detailed Description
The following examples further illustrate the embodiments of the present invention in detail.
Example 1
The special coating for the sand mold comprises the following raw materials by weight: 5.3kg of water, 10.75kg of brick grinding powder, 6g of xanthan gum and 38g of polyethylene.
The brick grinding powder mainly comprises the following components in percentage by weight: 17.48% of silicon, 50.89% of aluminum, 27.56% of zirconium, 1.35% of iron, 1.46% of sodium and the balance of other components (elements and/or impurities);
the preparation method of the brick grinding powder comprises the following steps: drying the brick grinding powder, and then carrying out a deferrization procedure in a strong magnetic deferrization device to control the weight percentage of iron in the brick grinding powder to be less than 0.05 percent.
The preparation method of the special coating for the sand mold comprises the following steps:
(1) pouring 4.5kg of water into a stirrer, adding 250g of tile grinding powder and 6g of xanthan gum, and stirring until the mixture is uniformly mixed;
(2) adding the rest of the grinding brick powder into the mixture prepared in the step (1), and stirring uniformly;
(3) pouring 0.8kg of water into a pot, adding 38g of polyethylene, placing on a furnace fire, and decocting until the polyethylene is completely melted;
(4) and (3) pouring the polyethylene solution in the step (3) into the mixture prepared in the step (2) while the polyethylene solution is hot, and uniformly stirring to obtain the polyethylene-polyethylene composite material.
Preferably, the Baume degree of the prepared special coating for the sand mold is 79.
Example 2
The special coating for the sand mold comprises the following raw materials by weight: 6kg of water, 12.75kg of grinding brick powder, 8g of xanthan gum and 40g of polyethylene.
The brick grinding powder mainly comprises the following components in percentage by weight: 17.48% of silicon, 50.89% of aluminum, 27.56% of zirconium, 1.35% of iron, 1.46% of sodium and the balance of other components (elements and/or impurities);
the preparation method of the brick grinding powder comprises the following steps: drying the brick grinding powder, and then carrying out a deferrization procedure in a strong magnetic deferrization device to control the weight percentage of iron in the brick grinding powder to be less than 0.05 percent.
The preparation method of the special coating for the sand mold comprises the following steps:
(1) pouring 5kg of water into a stirrer, adding 250g of tile grinding powder and 8g of xanthan gum, and stirring until the mixture is uniformly mixed;
(2) adding the rest of the grinding brick powder into the mixture prepared in the step (1), and stirring uniformly;
(3) pouring 1kg of water into a pot, adding 40g of polyethylene, placing on a furnace fire, and decocting until the polyethylene is completely melted;
(4) and (3) pouring the polyethylene solution in the step (3) into the mixture prepared in the step (2) while the polyethylene solution is hot, and uniformly stirring to obtain the polyethylene-polyethylene composite material.
Preferably, the Baume degree of the prepared special coating for the sand mold is 80.5.
Example 3
The special coating for the sand mold comprises the following raw materials by weight: 6.7kg of water, 14.75kg of brick grinding powder, 10g of xanthan gum and 42g of polyethylene.
The brick grinding powder mainly comprises the following components in percentage by weight: 17.48% of silicon, 50.89% of aluminum, 27.56% of zirconium, 1.35% of iron, 1.46% of sodium and the balance of other components (elements and/or impurities);
the preparation method of the brick grinding powder comprises the following steps: drying the brick grinding powder, and then carrying out a deferrization procedure in a strong magnetic deferrization device to control the weight percentage of iron in the brick grinding powder to be less than 0.05 percent.
The preparation method of the special coating for the sand mold comprises the following steps:
(1) pouring 5.5kg of water into a stirrer, adding 250g of tile grinding powder and 10g of xanthan gum, and stirring until the mixture is uniformly mixed;
(2) adding the rest of the grinding brick powder into the mixture prepared in the step (1), and stirring uniformly;
(3) pouring 1.2kg of water into a pot, adding 42g of polyethylene, placing on a furnace fire, and decocting until the polyethylene is completely melted;
(4) and (3) pouring the polyethylene solution in the step (3) into the mixture prepared in the step (2) while the polyethylene solution is hot, and uniformly stirring to obtain the polyethylene-polyethylene composite material.
Preferably, the Baume degree of the prepared coating special for the sand mold is 82.
Under the conditions, the melting temperature of the electric melting brick is above 2000 ℃, the casting temperature is about 1800 ℃, the highest temperature of the solution entering the sand mould to contact the sand mould is 1800 ℃, the time spent when the temperature is lowered to 1700 ℃ is about 8 minutes, the melting point of the ground brick powder is reduced when the ground brick powder contains metal impurities, and the quality of the brick surface can be influenced by the metal impurities, but the iron content in the ground brick powder is removed through strong magnetic iron removal, the melting point of the ground brick powder can be improved and can reach about 1690 to 1710 ℃, the high temperature resistance requirement of the high temperature resistant coating of the sand mould of the electric melting brick can be met, because the temperature range is just the temperature at which the ground brick powder can be sintered, the fitness of the ground brick powder as the sand mould coating is higher, through practical application, a layer of hard shell is formed after the coating is sintered, the gas pollution to the brick surface when resin is combusted is prevented, and the hard shell formed by the coating at high temperature can smoothly and naturally fall off when the, the brick surface is more convenient to clean, compared with the prior art, the invention has reasonable formula, greatly reduces the manufacturing cost of the sand mold coating of the electric melting brick, can save the coating cost by about 200 yuan per ton of electric melting brick, can save the coating cost by 200 ten thousand yuan per ten thousand tons of electric melting brick sand mold, can completely recycle a large amount of brick grinding powder which can not be reused in the production process, greatly improves the recycling value of the brick grinding powder, is more convenient to clean the brick surface, improves the efficiency of cleaning the brick surface, is an innovation on the sand mold coating of the electric melting brick, and has good social and economic benefits.
Claims (4)
1. The special sand mold coating produced by using the ground brick powder of the electric melting brick as a main raw material is characterized by comprising the following raw materials by weight: 5.3-6.7kg of water, 10.75-14.75kg of brick grinding powder, 6-10g of xanthan gum and 38-42g of polyethylene;
the brick grinding powder mainly comprises the following components in percentage by weight: 17.48% of silicon, 50.89% of aluminum, 27.56% of zirconium, 1.35% of iron and 1.46% of sodium;
the preparation method of the brick grinding powder comprises the following steps: drying the brick grinding powder, and then carrying out a deferrization procedure in a strong magnetic deferrization device to control the weight percentage of iron in the brick grinding powder to be less than 0.05 percent.
2. The special coating for the sand mold as claimed in claim 1, which is characterized by comprising the following raw materials by weight: 6kg of water, 12.75kg of grinding brick powder, 8g of xanthan gum and 40g of polyethylene.
3. The preparation method of the special coating for the sand mold as claimed in claim 1, which is characterized by comprising the following steps:
(1) 4.5-5.5kg of water is poured into a stirrer, 250g of tile grinding powder and 6-10g of xanthan gum are added, and the materials are stirred until the materials are uniformly mixed;
(2) adding the rest of the grinding brick powder into the mixture prepared in the step (1), and stirring uniformly;
(3) pouring 0.8-1.2kg of water into a pot, adding 38-42g of polyethylene, placing on a fire, and decocting until the polyethylene is completely melted;
(4) and (3) pouring the polyethylene solution in the step (3) into the mixture prepared in the step (2) while the polyethylene solution is hot, and uniformly stirring to obtain the polyethylene-polyethylene composite material.
4. The method for preparing the coating special for the sand mold as claimed in claim 3, wherein the Baume degree of the prepared coating special for the sand mold is 79-82.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931751.3A CN109181422B (en) | 2018-08-16 | 2018-08-16 | Special coating for sand mold produced by using fused brick grinding powder as main raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931751.3A CN109181422B (en) | 2018-08-16 | 2018-08-16 | Special coating for sand mold produced by using fused brick grinding powder as main raw material |
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| CN109181422A CN109181422A (en) | 2019-01-11 |
| CN109181422B true CN109181422B (en) | 2020-06-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2992960A (en) * | 1958-06-18 | 1961-07-18 | Various Assignees | High temperature resistant materials containing boron and method of manufacture thereof |
| GB901784A (en) * | 1960-04-13 | 1962-07-25 | Carborundum Co | Oxidation-resistant ceramics and methods of manufacturing the same |
| CN101570650A (en) * | 2008-04-30 | 2009-11-04 | 北京通达耐火技术股份有限公司 | Preparation method for wear resistant fire-retardant coating |
| CN101709161A (en) * | 2009-12-01 | 2010-05-19 | 闫友平 | Water-based paint for centrifugally casing stainless steel tube |
| CN104353777A (en) * | 2014-11-05 | 2015-02-18 | 襄阳聚力炉衬材料有限公司 | Cast iron evaporative pattern coating and preparation method thereof |
| CN105522112A (en) * | 2016-01-07 | 2016-04-27 | 上海交通大学 | High-collapsibility ceramic shell for manufacturing magnesium alloy fusible pattern and preparation method for high-collapsibility ceramic shell |
| CN107952929A (en) * | 2017-11-23 | 2018-04-24 | 山东蒙沃变速器有限公司 | A kind of water base lost foam casting coating |
-
2018
- 2018-08-16 CN CN201810931751.3A patent/CN109181422B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2992960A (en) * | 1958-06-18 | 1961-07-18 | Various Assignees | High temperature resistant materials containing boron and method of manufacture thereof |
| GB901784A (en) * | 1960-04-13 | 1962-07-25 | Carborundum Co | Oxidation-resistant ceramics and methods of manufacturing the same |
| CN101570650A (en) * | 2008-04-30 | 2009-11-04 | 北京通达耐火技术股份有限公司 | Preparation method for wear resistant fire-retardant coating |
| CN101709161A (en) * | 2009-12-01 | 2010-05-19 | 闫友平 | Water-based paint for centrifugally casing stainless steel tube |
| CN104353777A (en) * | 2014-11-05 | 2015-02-18 | 襄阳聚力炉衬材料有限公司 | Cast iron evaporative pattern coating and preparation method thereof |
| CN105522112A (en) * | 2016-01-07 | 2016-04-27 | 上海交通大学 | High-collapsibility ceramic shell for manufacturing magnesium alloy fusible pattern and preparation method for high-collapsibility ceramic shell |
| CN107952929A (en) * | 2017-11-23 | 2018-04-24 | 山东蒙沃变速器有限公司 | A kind of water base lost foam casting coating |
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| CN109181422A (en) | 2019-01-11 |
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