CN107793030B - Brown glaze material for electric porcelain, brown glaze for electric porcelain and preparation method of brown glaze material - Google Patents
Brown glaze material for electric porcelain, brown glaze for electric porcelain and preparation method of brown glaze material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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Abstract
The invention provides a brown glaze material for electric porcelain, a brown glaze material for electric porcelain and a preparation method thereof, wherein the brown glaze material for electric porcelain comprises the following components: 22-24 parts of quartz powder; 32 to 41 parts by weight of a flux; 25-32 parts of modified pug; 8-10 parts of high-iron clay; 4-6 parts of manganese oxide; 1 to 3 parts by weight of chromium oxide; SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; the ignition loss of the modified pug is 4-8%; fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%. According to the invention, the brown glaze material formula for the electric porcelain with specific components is adopted, and through mutual matching and combined action of the components and the contents thereof, the combination property of the glaze material is improved, and the suspension property and the viscosity of the glaze material are improved, so that the prepared brown glaze for the electric porcelain is not easy to generate orange glaze, umbrella tip bubbles and other defects, and the mechanical property and the cold and hot stability of the electric porcelain can be improved at the same time.
Description
Technical Field
The invention relates to the technical field of electric porcelain, in particular to a brown glaze material for electric porcelain, a brown glaze for electric porcelain and a preparation method thereof.
Background
The electroceramic is an industrial ceramic applied to the power industry, is mainly applied to power transmission lines, transformer substations and electrical equipment in power systems, and other special industries such as power systems of rail transit, can be divided into a plurality of types according to purposes and voltage grades, and has the main functions of insulation and support in any type. Such as disc suspension insulators, pin insulators, post insulators and long rod insulators for transmission lines, rod post insulators for supporting busbars or switchgear in substations, hollow insulators for transformer bushings, capacitors or transformers, etc.
Because the electric porcelain is applied to the electric power industry and needs to be used under special conditions, the electric porcelain has higher requirements on mechanical properties, electrical properties, pollution resistance, cold and hot stability and the like. The surface of the electric porcelain is provided with a layer of electric porcelain glaze, which is usually brown glaze or gray glaze. Besides the decoration function, the glaze for electric porcelain has great influence on the mechanical property, pollution resistance and cold and hot stability of the electric porcelain.
However, the glaze for electric porcelain in the prior art mainly improves the pollution resistance of the electric porcelain, has very limited effect on improving the mechanical property of the electric porcelain, and has poor cold and hot stability.
Disclosure of Invention
In view of the above, the invention aims to provide a brown glaze material for electric porcelain, a brown glaze material for electric porcelain and a preparation method thereof.
The invention provides a brown glaze material for electric porcelain, which comprises the following components:
22-24 parts of quartz powder;
32 to 41 parts by weight of a flux;
25-32 parts of modified pug;
8-10 parts of high-iron clay;
4-6 parts of manganese oxide;
1 to 3 parts by weight of chromium oxide;
SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; the ignition loss of the modified pug is 4-8%;
fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%.
Preferably, the quartz powder is high-purity porous quartz powder with the average grain diameter of 0.1-0.9 μm, and is prepared by calcining crops at 900-1100 ℃.
Preferably, the flux consists of potassium feldspar, albite, calcined talc, wollastonite and barium carbonate;
the mass ratio of the potassium feldspar to the albite to the calcined talc to the wollastonite to the barium carbonate is (18-20): (3-5): (3-5): (6-8): (2-3).
Preferably, the modified mud material consists of Hubei mud and blank mud;
the mass ratio of the Hubei mud to the blank mud is (19-24): (6-8).
The invention also provides a preparation method of the brown glaze for the electric porcelain, which comprises the following steps:
a) mixing the brown glaze material for the electric porcelain and water, and performing ball milling and sieving in sequence to obtain brown glaze slurry for the electric porcelain;
b) glazing the brown glaze slurry for the electric porcelain obtained in the step a), and then firing to obtain the brown glaze for the electric porcelain.
Preferably, in the ball milling process in the step a), the mass ratio of the brown glaze material for the electric porcelain, water and the ball-milled balls is 1: (0.7-0.9): (1.5-2.5);
the ball milling time is 3-5 h.
Preferably, the size of the sieve mesh in the step a) is 300-350 meshes, and the rest is 0.03-0.06%.
Preferably, the glazing mode in the step B) is dipping, the specific gravity of the glazed slip is 40 degrees Be-50 degrees Be, and the glazing thickness is 0.2 mm-0.3 mm.
Preferably, the firing process in the step b) adopts reducing flame firing;
the maturing temperature range of the firing is 1240-1330 ℃, and the heat preservation time is 2-4 h.
The invention also provides the brown glaze for the electric porcelain, which is prepared by the preparation method of the brown glaze for the electric porcelain.
The invention provides a brown glaze material for electric porcelain, a brown glaze for electric porcelain and a preparation method thereof, wherein the brown glaze material for electric porcelainThe brown glaze material comprises the following components: 22-24 parts of quartz powder; 32 to 41 parts by weight of a flux; 25-32 parts of modified pug; 8-10 parts of high-iron clay; 4-6 parts of manganese oxide; 1 to 3 parts by weight of chromium oxide; SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; the ignition loss of the modified pug is 4-8%; fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%. Compared with the prior art, the brown glaze for the electric porcelain adopts the formula of the brown glaze material for the electric porcelain with specific components, improves the bonding performance of the glaze material through the mutual matching and combined action of the components and the contents thereof, improves the suspension property and the viscosity of the glaze material, ensures that the prepared brown glaze for the electric porcelain is not easy to generate orange glaze, umbrella tip bubbles and other defects, and finally can improve the mechanical property and the cold and hot stability of the electric porcelain.
In addition, the preparation method of the brown glaze for the electric porcelain, provided by the invention, has the advantages of simple process, easily available raw materials, no toxicity, no pollution, environmental protection and cost reduction.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a brown glaze material for electric porcelain, which comprises the following components:
22-24 parts of quartz powder;
32 to 41 parts by weight of a flux;
25-32 parts of modified pug;
8-10 parts of high-iron clay;
4-6 parts of manganese oxide;
1 to 3 parts by weight of chromium oxide;
SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; the ignition loss of the modified pug is 4-8%;
fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%.
In the present invention, the quartz powder is preferably a high-purity porous quartz powder having an average particle size of 0.1 to 0.9. mu.m, and more preferably a high-purity porous quartz powder having an average particle size of 0.5. mu.m. In the invention, the quartz powder is preferably prepared by calcining crops at 900-1100 ℃; the crop is preferably straw or husk of rice, wheat, corn, and the present invention is not particularly limited thereto. In the present invention, the quartz powder mainly functions to provide SiO forming the vitreous phase of the glaze body2Endows the glaze with high hardness and certain thermal expansion coefficient. In the invention, the brown glaze material for electric porcelain comprises 22-24 parts by weight of quartz powder, preferably 22 parts by weight.
In the present invention, the flux is preferably composed of potassium feldspar, albite, calcined talc, wollastonite, and barium carbonate. The source of the flux is not particularly limited in the present invention, and the processed powder of potassium feldspar, albite, calcined talc, wollastonite and barium carbonate mentioned above, which are well known to those skilled in the art, may be used. In the invention, the mass ratio of the potassium feldspar, the albite, the calcined talc, the wollastonite and the barium carbonate is preferably (18-20): (3-5): (3-5): (6-8): (2-3), more preferably 18.6: 4.3: 3.5: 7.1: 2. in the invention, the flux mainly has the function of reducing the melting temperature of the glaze so that the glaze layer has better fluidity at high temperature. In the present invention, the brown glaze material for electric porcelain comprises 32 to 41 parts by weight of flux, preferably 35.5 parts by weight.
In the invention, SiO in the modified pug250-60 percent of Al2O3Quality of (1)The weight percentage content is 28% -35%; the ignition loss of the modified pug is 4-8%. In the present invention, the modified pug provides SiO required in the formula2With Al2O3Besides, the components can also keep the suspension property and the viscosity of the glaze slip, improve the high-temperature fluidity of the glaze and enable the glaze slip to have better associativity with a blank body. In the present invention, the modified pug preferably consists of the Hubei mud and the mud. The source of the Hubei mud is not particularly limited by the invention, and the raw ore is selected by the method well known by the technical personnel in the field; the present invention is not particularly limited in its source, and it is sufficient to use a paste made of a blank of an electric porcelain product to which the brown glaze for electric porcelain is to be applied, which is well known to those skilled in the art. In the invention, the mass ratio of the Hubei mud to the blank mud is preferably (19-24): (6-8), more preferably 20.6: 6.6. in the invention, the brown glaze material for electric porcelain comprises 25 to 32 parts by weight of modified pug, preferably 27.2 parts by weight.
In the invention, Fe in the high-iron clay2O3The mass percentage content of (A) is 5-10%, preferably 6-8%; the loss on ignition of the high-iron clay is 4-6%. In the present invention, the high iron clay provides SiO required in the formulation2、Al2O3And Fe2O3Besides the components, the glaze slip can keep the suspension property and the viscosity and improve Fe2O3Compatibility of ingredients in the overall formulation. The source of the high-iron clay is not particularly limited in the invention, and the raw ore can be selected by the skilled person. In the invention, the brown glaze material for electric porcelain comprises 8-10 parts by weight of high-iron clay, preferably 8.2 parts by weight.
The sources of the manganese oxide and chromium oxide are not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. In the present invention, the brown glaze material for electric porcelain comprises 4 to 6 parts by weight of manganese oxide, preferably 4.6 parts by weight. In the present invention, the brown glaze material for electric porcelain comprises 1 to 3 parts by weight of chromium oxide, preferably 2.5 parts by weight.
According to the brown glaze formula for the electric porcelain, components with specific contents are adopted, and the components and the contents thereof are matched with each other and act together, so that on one hand, the blank glaze materials are naturally compatible, and the binding performance of the glaze is improved, and in the brown glaze formula for the electric porcelain in the prior art, 1-2 clay raw materials are required to be introduced for ensuring the suspension property of glaze slip and the binding performance between the blank glazes, and the binding performance between the blank glazes is insufficient due to the difference of chemical components and physical properties of the clay raw materials and blanks; on the other hand, the reasonable formula is utilized to improve the suspension property and viscosity of the glaze, and calcite, iron oxide red raw materials (with certain toxicity) and the like in the formula of the brown glaze for the electric porcelain in the prior art have adverse effects on the suspension property and viscosity of the glaze, so that orange glaze, umbrella tip bubbles and other defects are easily generated; therefore, the brown glaze material formula for the electric porcelain provided by the invention can ensure that the prepared brown glaze for the electric porcelain is not easy to generate orange glaze, umbrella tip bubbles and other defects, and finally can simultaneously improve the mechanical property and the cold and hot stability of the electric porcelain.
The invention also provides a preparation method of the brown glaze for the electric porcelain, which comprises the following steps:
a) mixing the brown glaze material for the electric porcelain and water, and performing ball milling and sieving in sequence to obtain brown glaze slurry for the electric porcelain;
b) glazing the brown glaze slurry for the electric porcelain obtained in the step a), and then firing to obtain the brown glaze for the electric porcelain.
The brown glaze slurry for the electric porcelain is prepared by mixing the brown glaze material for the electric porcelain and water, and performing ball milling and sieving in sequence. In the invention, the brown glaze for electric porcelain is the brown glaze for electric porcelain according to the technical scheme, and details are not repeated herein. In the invention, in the ball milling process, the mass ratio of the brown glaze material for the electric porcelain, water and ball milled balls is preferably 1: (0.7-0.9): (1.5-2.5), more preferably 1: 0.8: 2.
in the invention, the purpose of ball milling is to levitate and fully mix all components in the brown glaze material for the electric porcelain; the ball milling equipment is not particularly limited in the present invention, and a ball mill known to those skilled in the art may be used. In the present invention, the time for the ball milling is preferably 3 to 5 hours, and more preferably 4 hours.
After the ball milling process is finished, the ball-milled mixture is sieved to obtain brown glaze slurry for the electric porcelain. In the present invention, the size of the sieve mesh of the sieve is preferably 300 to 350 meshes, and more preferably 325 meshes; the screening allowance is preferably 0.03-0.06%, and more preferably 0.04-0.05%.
After the brown glaze slurry for the electric porcelain is obtained, the obtained brown glaze slurry for the electric porcelain is glazed and then fired to obtain the brown glaze for the electric porcelain. In the present invention, the glazing process is preferably performed on an electroceramic blank; in a preferred embodiment of the invention, the glazing process is preferably performed on strips of electroceramic blanks. The source of the electric porcelain blank is not particularly limited, and the electric porcelain blank prepared by adopting the electric porcelain blank formula well known by the technical personnel in the field can be used.
In the present invention, the glazing manner is preferably dipping glaze, specifically: and (4) putting the electroceramic blank into the brown glaze slurry for electroceramic, lifting out, and naturally drying. In the invention, the specific gravity of the glazed glaze slip is preferably 40-50 degrees Be, more preferably 46 degrees Be; the thickness of the glazing is preferably 0.2mm to 0.3mm, more preferably 0.25mm to 0.3 mm.
In the invention, the firing process preferably adopts reducing flame firing; the invention is not particularly limited in this regard and may be fired using a natural gas kiln as is well known to those skilled in the art. In the present invention, the firing ripening temperature range is preferably 1240 ℃ to 1330 ℃; the heat preservation time for the firing is preferably 2 to 4 hours, and more preferably 3 hours.
The invention also provides the brown glaze for the electric porcelain, which is prepared by the preparation method of the brown glaze for the electric porcelain. According to the invention, the brown glaze material formula for the electric porcelain with specific components is adopted, the components and the contents thereof are mutually matched and act together, the bonding performance of the glaze material is improved, and the suspension property and the viscosity of the glaze material are improved, so that the prepared brown glaze for the electric porcelain is not easy to generate orange glaze, umbrella tip bubbles and other defects, and finally, the mechanical property and the cold and hot stability of the electric porcelain can be improved.
The invention provides a brown glaze material for electric porcelain, a brown glaze material for electric porcelain and a preparation method thereof, wherein the brown glaze material for electric porcelain comprises the following components: 22-24 parts of quartz powder; 32 to 41 parts by weight of a flux; 25-32 parts of modified pug; 8-10 parts of high-iron clay; 4-6 parts of manganese oxide; 1 to 3 parts by weight of chromium oxide; SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; the ignition loss of the modified pug is 4-8%; fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%. Compared with the prior art, the brown glaze for the electric porcelain adopts the formula of the brown glaze material for the electric porcelain with specific components, improves the bonding performance of the glaze material through the mutual matching and combined action of the components and the contents thereof, improves the suspension property and the viscosity of the glaze material, ensures that the prepared brown glaze for the electric porcelain is not easy to generate orange glaze, umbrella tip bubbles and other defects, and finally can improve the mechanical property and the cold and hot stability of the electric porcelain.
In addition, the preparation method of the brown glaze for the electric porcelain, provided by the invention, has the advantages of simple process, easily available raw materials, no toxicity, no pollution, environmental protection and cost reduction.
To further illustrate the present invention, the following examples are provided for illustration. The quartz powder used in the following examples of the present invention is a high purity porous quartz powder having an average particle size of 0.5 μm, which is prepared by calcining crops (such as rice, wheat, corn straw or husk) at 1000 ℃; the used potassium feldspar, albite, calcined talc, wollastonite and barium carbonate are all processed powder; the used Hubei mud and the high-iron clay are selected raw ores; the used blank mud is mud made of a blank of an electric porcelain product to which the brown glaze for electric porcelain is applied; the chemical percentages of the components in the above raw materials and the loss on ignition at 1000 ℃ are shown in table 1.
TABLE 1 chemical percentage (%) of each component and ignition loss at 1000 ℃ (%)
Example 1
(1) The formula of the brown glaze material for the electric porcelain is as follows: 22 parts of quartz powder, 18.6 parts of potassium feldspar, 4.3 parts of albite, 3.5 parts of calcined talc, 7.1 parts of wollastonite, 20.6 parts of Hubei mud, 2 parts of barium carbonate, 6.6 parts of blank mud, 8.2 parts of high-iron clay, 4.6 parts of manganese oxide and 2.5 parts of chromium oxide.
(2) Mixing the brown glaze material for the electric porcelain, water and ball-milled balls according to a mass ratio of 1: 0.8: 2, ball milling for 4 hours, sieving with a 325-mesh sieve, wherein the sieved residual is 0.04-0.05 percent, and obtaining the brown glaze slurry for the electric porcelain.
(3) Glazing the brown glaze slurry for the electric porcelain on an electric porcelain blank test strip: immersing the electroceramic blank test strip into brown glaze slurry for electroceramic with glaze slurry specific gravity of 46 degrees Be, wherein the glazing thickness is 0.25-0.3 mm; then adopting reduction flame to burn; the maturing temperature range of firing is 1240 ℃ to 1330 ℃, and the heat preservation time is 3 hours; the brown glaze for the electric porcelain, which has smooth glaze surface and glaze color meeting the requirements of corresponding Monser color system related color cards in the standard, is obtained.
The mechanical properties and the cold and hot stability of the brown glaze for the electric porcelain obtained in the embodiment 1 of the invention are tested, and the results show that the bending strength of the test strip with the brown glaze for the electric porcelain provided in the embodiment 1 is 219MPa, is improved by about 33% compared with 165MPa of the unglazed test strip, and is improved by 21.7% compared with 180MPa of the bending strength of the electric porcelain with the brown glaze in the prior art; the cold and heat shock resistance is 225 ℃.
Meanwhile, the product has no appearance defects such as orange glaze, bubbles at the tip of the umbrella and the like.
Example 2
(1) The formula of the brown glaze material for the electric porcelain is as follows: 24 parts of quartz powder, 18 parts of potassium feldspar, 3 parts of albite, 3 parts of calcined talc, 6 parts of wollastonite, 24 parts of Hubei mud, 2 parts of barium carbonate, 6 parts of blank mud, 10 parts of high-iron clay, 6 parts of manganese oxide and 1 part of chromium oxide.
(2) Mixing the brown glaze material for the electric porcelain, water and ball-milled balls according to a mass ratio of 1: 0.8: 2, ball milling for 4 hours, sieving with a 325-mesh sieve, wherein the sieved residual is 0.04-0.05 percent, and obtaining the brown glaze slurry for the electric porcelain.
(3) Glazing the brown glaze slurry for the electric porcelain on an electric porcelain blank test strip: immersing the electroceramic blank test strip into brown glaze slurry for electroceramic with glaze slurry specific gravity of 46 degrees Be, wherein the glazing thickness is 0.25-0.3 mm; then adopting reduction flame to burn; the maturing temperature range of firing is 1240 ℃ to 1330 ℃, and the heat preservation time is 3 hours; the brown glaze for the electric porcelain, which has smooth glaze surface and glaze color meeting the requirements of corresponding Monser color system related color cards in the standard, is obtained.
The mechanical properties and the cold and hot stability of the brown glaze for electric porcelain obtained in the embodiment 2 of the invention are tested, and the result shows that the breaking strength of the test strip with the brown glaze for electric porcelain provided in the embodiment 2 is 215 MPa; the cold and heat shock resistance is 220 ℃.
Meanwhile, the product has no appearance defects such as orange glaze, bubbles at the tip of the umbrella and the like.
Example 3
(1) The formula of the brown glaze material for the electric porcelain is as follows: 22 parts of quartz powder, 20 parts of potassium feldspar, 5 parts of albite, 5 parts of calcined talc, 8 parts of wollastonite, 19 parts of Hubei mud, 3 parts of barium carbonate, 8 parts of blank mud, 8 parts of high-iron clay, 4 parts of manganese oxide and 3 parts of chromium oxide.
(2) Mixing the brown glaze material for the electric porcelain, water and ball-milled balls according to a mass ratio of 1: 0.8: 2, ball milling for 4 hours, sieving with a 325-mesh sieve, wherein the sieved residual is 0.04-0.05 percent, and obtaining the brown glaze slurry for the electric porcelain.
(3) Glazing the brown glaze slurry for the electric porcelain on an electric porcelain blank test strip: immersing the electroceramic blank test strip into brown glaze slurry for electroceramic with glaze slurry specific gravity of 46 degrees Be, wherein the glazing thickness is 0.25-0.3 mm; then adopting reduction flame to burn; the maturing temperature range of firing is 1240 ℃ to 1330 ℃, and the heat preservation time is 3 hours; the brown glaze for the electric porcelain, which has smooth glaze surface and glaze color meeting the requirements of corresponding Monser color system related color cards in the standard, is obtained.
The mechanical properties and the cold and hot stability of the brown glaze for electric porcelain obtained in the embodiment 3 of the invention are tested, and the result shows that the breaking strength of the test strip with the brown glaze for electric porcelain provided in the embodiment 3 is 213 MPa; the cold and heat shock resistance is 223 ℃.
Meanwhile, the product has no appearance defects such as orange glaze, bubbles at the tip of the umbrella and the like.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A brown glaze material for electric porcelain comprises the following components:
22-24 parts of quartz powder;
32 to 41 parts by weight of a flux;
25-32 parts of modified pug;
8-10 parts of high-iron clay;
4-6 parts of manganese oxide;
1 to 3 parts by weight of chromium oxide;
the quartz powder is high-purity porous quartz powder with the average grain diameter of 0.1-0.9 mu m and is prepared by calcining crops at 900-1100 ℃;
the flux consists of potassium feldspar, albite, calcined talc, wollastonite and barium carbonate;
the mass ratio of the potassium feldspar to the albite to the calcined talc to the wollastonite to the barium carbonate is (18-20): (3-5): (3-5): (6-8): (2-3);
SiO in the modified pug250-60 percent of Al2O3The mass percentage content of the compound is 28 to 35 percent; of the modified sludgeThe ignition loss is 4% -8%;
fe in the high-iron clay2O3The mass percentage content of the compound is 5 to 10 percent; the loss on ignition of the high-iron clay is 4-6%.
2. The brown glaze material for electric porcelain according to claim 1, wherein the modified pug consists of Hubei mud and blank mud;
the mass ratio of the Hubei mud to the blank mud is (19-24): (6-8).
3. A preparation method of brown glaze for electric porcelain comprises the following steps:
a) mixing the brown glaze material for electric porcelain according to any one of claims 1-2 with water, and performing ball milling and sieving in sequence to obtain brown glaze slurry for electric porcelain;
b) glazing the brown glaze slurry for the electric porcelain obtained in the step a), and then firing to obtain the brown glaze for the electric porcelain.
4. The preparation method according to claim 3, wherein in the ball milling process in the step a), the mass ratio of the brown glaze material for electric porcelain, water and the ball-milled balls is 1: (0.7-0.9): (1.5-2.5);
the ball milling time is 3-5 h.
5. The method according to claim 3, wherein the size of the screen hole in step a) is 300-350 mesh, and the remaining amount is 0.03-0.06%.
6. The preparation method according to claim 3, characterized in that the glazing manner in step B) is dipping, the specific gravity of the glazed slip is 40 ° Be-50 ° Be, and the glazing thickness is 0.2 mm-0.3 mm.
7. The method according to claim 3, wherein the firing in step b) is performed by reducing flame firing;
the maturing temperature range of the firing is 1240-1330 ℃, and the heat preservation time is 2-4 h.
8. The brown glaze for the electric porcelain is prepared by the preparation method of the brown glaze for the electric porcelain according to any one of claims 3 to 7.
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| CN115677218A (en) * | 2022-11-08 | 2023-02-03 | 江西省星海电瓷制造有限公司 | Electroceramic brown glaze formula suitable for being fired in tunnel kiln and manufacturing method thereof |
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| CN102757258A (en) * | 2012-07-31 | 2012-10-31 | 抚顺电瓷制造有限公司 | Inorganic bonding glaze for isostatic pressing electrical porcelain |
| CN102786322A (en) * | 2012-08-28 | 2012-11-21 | 江苏南瓷绝缘子有限公司 | High-strength electroceramics ash glaze formulation and preparation method thereof |
| CN103553719A (en) * | 2013-10-30 | 2014-02-05 | 河南省德立泰高压电瓷电器有限公司 | Preparation method of external brown glaze of electrical porcelain |
| CN106673441A (en) * | 2016-12-09 | 2017-05-17 | 中材江西电瓷电气有限公司 | Ultra-high hardness brown glaze for insulator and preparation method thereof |
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| JP4335765B2 (en) * | 2004-08-03 | 2009-09-30 | 日本特殊陶業株式会社 | Spark plug insulator firing method, firing device, and spark plug manufacturing method manufactured by the firing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757258A (en) * | 2012-07-31 | 2012-10-31 | 抚顺电瓷制造有限公司 | Inorganic bonding glaze for isostatic pressing electrical porcelain |
| CN102786322A (en) * | 2012-08-28 | 2012-11-21 | 江苏南瓷绝缘子有限公司 | High-strength electroceramics ash glaze formulation and preparation method thereof |
| CN103553719A (en) * | 2013-10-30 | 2014-02-05 | 河南省德立泰高压电瓷电器有限公司 | Preparation method of external brown glaze of electrical porcelain |
| CN106673441A (en) * | 2016-12-09 | 2017-05-17 | 中材江西电瓷电气有限公司 | Ultra-high hardness brown glaze for insulator and preparation method thereof |
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