A method for preparing a painted enamel color plate

Abstract

The present invention relates to a method for preparing a painted enamel color plate, and belongs to the technical field of painted enamel. The present invention melts a base material to form a base; the base includes a body and a convex ring, glaze powder is spread on the first surface of the body, and after firing, a base glaze layer is formed on the first surface; a blank area and a painting area are divided in the base glaze layer, and the painting area is divided into at least two fan-shaped color areas, and a marking area is left between any two adjacent fan-shaped color areas; the present invention forms a color glaze layer in the corresponding fan-shaped color area by painting and firing, so that the color effects of different types of color glazes presented by the painted enamel process are displayed on the same color plate, and marks are drawn on the blank area, the marking area and the color glaze layer, so that the operator can refer to the painted enamel color plate for painting and color matching during the implementation of the painted enamel process.

Description

Technical Field

[0001] The invention relates to the technical field of painted enamel, and in particular to a method for preparing a painted enamel color plate. Background Art

[0002] Enamel, also known as flang, flang, and blue, is made by mixing mineral materials such as silicon, red lead, borax, feldspar, and quartz in appropriate proportions, adding various colored metal oxides, roasting and grinding them into powdered color materials, and then filling or painting them on metal bodies according to different enamel craftsmanship. After baking, they become enamel products. Enamel pigments are composite materials, melted from many kinds of minerals, with a hard texture and impermeable to water. After firing, the enamel pictures are bright in color, long-lasting, and have a special luster and texture, so they are very suitable for painting.

[0003] From the perspective of production technology, enamel crafts are generally divided into three categories: cloisonné enamel, champlevé enamel and painted enamel. Among them, painted enamel is the most technically demanding type of enamel craft. The biggest difference between it and ordinary painting is that the glaze to be painted needs to be fired at high temperature to sinter the dispersed fine glaze particles to undergo a glass transition and form a complete and integrated glass glaze layer. Different glazes undergo different physical and chemical changes during high-temperature firing. The color in the glaze bottle is sometimes very different from the color after firing, and the optimal firing process required for enamel glazes of different colors is often different. For enamel painters, it is not only necessary to have a deep foundation in painting, but also to be familiar with the color of the glaze after firing, as well as how each color will change at different temperatures, etc. Therefore, in order to obtain a stable and reliable painted enamel effect, it is necessary to first conduct color experiments and make corresponding color plates, which is essential for understanding the interaction between glaze and metal and the interaction between different glazes, and has important guiding significance for production.

[0004] At present, there is a lack of painted enamel color plates in the field of enamel craftsmanship. As a color and process guide in mass production, the production requirements of color plates are very high. Shoddy and random disposal not only fail to play a guiding role, but also mislead. Existing enamel color plates are all made for champlevé enamel. For example, patent CN207689012U discloses a transparent enamel color plate and its plate embryo production device, which is provided with multiple glaze filling grooves on a metal substrate, and different textures such as concave grooves, convex ribs, and gold and silver foil are provided in the glaze filling grooves, and then glaze is filled on its surface. This color plate can be used to guide the champlevé enamel and cloisonné enamel crafts, but because the glaze particle size, glaze form, glazing method, firing method, etc. used in painted enamel are different from the champlevé enamel craft, it is not suitable for use as a color plate for painted enamel. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for preparing a painted enamel color plate.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for preparing a painted enamel color plate comprises the following steps:

[0008] S1. Melting a base material to form a base, wherein the base comprises a carcass and a convex ring, wherein the carcass has a first surface and a second surface, the first surface and the second surface are opposite to each other, and the convex ring is arranged on the outer periphery of the first surface of the carcass;

[0009] S2, spreading glaze powder on the first surface of the body, and forming a bottom glaze layer on the first surface after firing; spreading glaze powder on the second surface of the body, and forming a back glaze layer on the second surface after firing;

[0010] S3, dividing the bottom glaze layer into a blank area and a drawing area, wherein the blank area is located in the center of the bottom glaze layer, and the drawing area is located between the blank area and the convex ring; dividing the drawing area into at least two sector-shaped color areas, and leaving a marking area between any two adjacent sector-shaped color areas;

[0011] S4, using N types of colored glazes to prepare colored glaze slurries respectively, where N is equal to the number of the fan-shaped color areas;

[0012] S5, using the glaze slurry prepared in step S4 to paint a fan-shaped glaze slurry layer on the fan-shaped color area, the fan-shaped glaze slurry layers on any two adjacent fan-shaped color areas contain different types of colored glaze, and after firing treatment, a colored glaze layer is formed on the fan-shaped color area;

[0013] S6. Use the glaze slurry prepared in step S4 to draw marks on the blank area, the marking area and the colored glaze layer, dry the marks and then perform a firing process; cut the process parameters of the firing process in step S5 on the surface of the convex ring.

[0014] The present invention forms colored glaze layers of different types in corresponding fan-shaped color areas through painting and firing, thereby displaying the color effects of different types of colored glazes through the painted enamel process on different fan-shaped color areas, and drawing marks on the blank area, the marking area and the colored glaze layer, so that the operator can refer to the painted enamel color plate to perform painting and color matching during the implementation of the painted enamel process.

[0015] As a preferred embodiment of the present invention, in step S1, the base material includes the following components in weight percentage: 0.5-1.0% gallium, 1-1.5% platinum, and balance silver.

[0016] The bases of existing color plates are mostly made of pure copper or pure silver, and the thermal expansion coefficients of such bases match well with enamel materials. However, copper is easily oxidized and discolored when fired at high temperatures, thus affecting the color of the glaze layer; and the strength of silver is very low, and the glaze layer is easily deformed during the firing process, causing cracks in the glaze layer. The present application compounds gallium, platinum and silver into an anti-tarnishing silver alloy base material, which not only has a good thermal expansion coefficient match with the enamel glaze, but also has high strength, is not easy to deform, and has good high-temperature oxidation resistance, which is conducive to ensuring the production effect of the color plate and its stability during use; compared with precious metals such as pure gold and pure platinum, the base material cost of the silver alloy is relatively low and has a high cost-effectiveness.

[0017] As a preferred embodiment of the present invention, in step S1, the carcass is a hollow spherical segment structure, the first surface and the second surface are concentric spherical crown surfaces, the diameter of the spherical crown surface where the first surface is located is 45~50mm, the wall thickness of the carcass is 0.8~1.0mm, and the spherical segment height of the carcass is 2.5~4.0mm; the surface roughness of the carcass is 0.7~0.8μm; at least two wire grooves are provided on the first surface of the carcass, the angle between the central axes of the openings between any two adjacent wire grooves is 10~60°, the width of the wire groove is 0.1~0.2mm, and the groove depth is 0.1~0.15mm; the width of the convex ring is 1.0~1.5mm, and the convex ring protrudes 0.3~0.5mm relative to the first surface.

[0018] The present invention forms a wire groove structure on the body by pressing, which can effectively reduce the stress of the glaze layer, increase the bonding force between the glaze layer and the body, and is beneficial to the stability of the glaze layer.

[0019] As a preferred embodiment of the present invention, step S1 specifically includes:

[0020] S11, after melting the base material, casting it into an ingot, rolling it until the rolling amount reaches 80-90%, annealing it at 650-700° C. for 180-300 seconds, and obtaining a base sheet with a thickness of 0.8-1 mm;

[0021] S12, punching the base sheet obtained in step S11 into a blank using a punching die;

[0022] S13, annealing the slab obtained in step S12 at 650-700° C. for 180-300 seconds, then pressing the annealed slab into a shape using a hydraulic die, and then removing the flash using a trimming die to obtain a formed blank;

[0023] S14, annealing the molded blank obtained in step S13 at 650-700°C for 180-300s, then degreasing the annealed molded blank, cleaning it, and air-drying it to obtain a substrate.

[0024] The present invention prepares a substrate with regular shape, stable size and uniform texture density through sequentially performing processes of melting, pouring, rolling, annealing, punching, annealing, pressing, trimming, annealing and the like.

[0025] As a preferred embodiment of the present invention, step S2 specifically includes:

[0026] S21, spreading glaze powder on the first surface of the body by using a dry sieve drum, firing at 810-830° C. for 40-50 seconds, and repeatedly spreading and firing to form a bottom glaze layer on the first surface of the body;

[0027] S22, spreading the glaze powder onto the second surface of the body using a dry sieve drum, firing at 810-830° C. for 50-60 seconds to form a back glaze layer on the second surface of the body.

[0028] Furthermore, in step S21, the sieve hole size of the dry sieve cylinder is 100-120 meshes; the spreading thickness of the glaze powder is 0.2-0.3 mm, the glaze powder is white glaze powder or black glaze powder, and the particle size of the glaze powder is 120-140 meshes.

[0029] Furthermore, in step S22, the sieve hole size of the dry sieve cylinder is 100-120 meshes; the spreading thickness of the glaze powder is 0.2-0.3 mm, the glaze powder is white glaze powder or black glaze powder, and the particle size of the glaze powder is 120-140 meshes.

[0030] Furthermore, after step S22, the following steps are further included:

[0031] S23. Check the flatness of the bottom glaze layer, use a carborundum rod to grind and flatten the raised parts of the bottom glaze layer, then use a contoured carborundum wheel to grind the bottom glaze layer flat, and use a carborundum needle to grind away the bubbles and impurity spots to form depressions; moisten the glaze powder with water and fill it into the depressions, and after drying, fire it at 810~830℃ for 50~60s.

[0032] Furthermore, the drying method in step S23 is any one of air drying and drying with absorbent paper.

[0033] Furthermore, in step S23, the mass ratio of glaze powder to water is (3-3.6):1.

[0034] In the present invention, step S21, step S22 and step S23 use glaze powder of the same color and particle size. The bottom glaze layer prepared in step S2 presents a smooth, flat, dense and uniform color effect. The bottom glaze layer is white or black and opaque, providing a basis for colored glaze enamel.

[0035] As a preferred embodiment of the present invention, in step S3, the diameter of the blank area is 10-15 mm; the drawing area is divided into 16-24 sector-shaped color areas, and the central angle of the sector-shaped color area is 3-4°.

[0036] As a preferred embodiment of the present invention, step S4 specifically includes:

[0037] N types of colored glazes are prepared, and after grinding the same type of colored glazes, they are respectively passed through sieves with n sieve hole sizes to obtain n kinds of colored glaze powders, which are respectively mixed with water to form n kinds of colored glaze slurries; n is a positive integer, n≥2.

[0038] Furthermore, in step S4, the mesh size of the sieve is 300-2500 meshes.

[0039] Furthermore, in step S4, the mass ratio of the color glaze powder to water in the color glaze slurry is (3.4-4.1):1.

[0040] As a preferred embodiment of the present invention, step S5 specifically includes:

[0041] S51, on the surface of each sector-shaped color area, using the colored glaze slurry prepared in step S4 to draw five sector-shaped glaze slurry layers, the five sector-shaped glaze slurry layers on the same sector-shaped color area contain the same type of glaze powder, and the five sector-shaped glaze slurry layers on the same sector-shaped color area are arranged in order from large to small in the direction away from the blank area according to the particle size of the glaze powder contained;

[0042] S52, drying the fan-shaped glaze slurry layer and firing it to form a colored glaze layer.

[0043] Since the same type of colored glaze powder is ground to different particle sizes, the color depth displayed after firing is different. On the same fan-shaped color area, n fan-shaped glaze slurry layers are arranged in sequence from large to small according to the particle size of the colored glaze powder contained in the direction away from the blank area, so that the colored glaze layer formed by firing shows a color gradient effect.

[0044] Furthermore, in step S52, the thickness of the fan-shaped glaze slurry layer is 0.05-0.1 mm.

[0045] Furthermore, step S52 specifically includes: using absorbent paper to absorb moisture in the fan-shaped glaze slurry layer, using the hot air on the top of the muffle furnace to air-dry the fan-shaped glaze slurry layer, and then firing it in the atmosphere to form a colored glaze layer.

[0046] Furthermore, in step S52, the atmosphere is at least one of air, argon, and nitrogen.

[0047] Furthermore, after step S52, the method further includes:

[0048] S53, using a diamond needle to remove bubbles and mottled spots on the surface of the colored glaze layer to form depressions, and filling the depressions with corresponding colored glaze slurry, which is then dried and fired.

[0049] As a preferred embodiment of the present invention, step S6 specifically includes:

[0050] S61, using the glaze slurry prepared in step S4 to draw the number mark of the color system to which the glaze in step S4 belongs in the blank area;

[0051] S62, at a position in the marking area corresponding to the colored glaze layer, using the colored glaze slurry prepared in step S4 to draw a particle size mark of the contained colored glaze powder; using the colored glaze slurry prepared in step S4 to draw a corresponding colored glaze model mark on the corresponding colored glaze layer;

[0052] S63, drying the mark and then firing it;

[0053] S64, using laser to cut the process parameters of the firing treatment in step S5 on the surface of the convex ring.

[0054] In the present invention, the process parameters of the firing process in step S52, the process parameters of the firing process in step S53, and the process parameters of the firing process in step S63 are the same.

[0055] If the colored glaze in step S4 is a red colored glaze, the atmosphere in step S52 is argon, the firing temperature is 750-760° C., and the firing time is 50-60 seconds.

[0056] If the colored glaze in step S4 is a gold colored glaze, the atmosphere in step S52 is air, the firing temperature is 770-780° C., and the firing time is 50-60 seconds.

[0057] If the colored glaze in step S4 is a green colored glaze, the atmosphere in step S52 is oxygen-enriched air, the flow rate of oxygen in the enriched air is set to 4-10 sccm, the firing temperature is 780-800°C, and the firing time is 50-60s.

[0058] Furthermore, after step S6, the method further includes:

[0059] S7, spreading the finishing glaze powder on the surface of the color glaze layer, and forming a finishing glaze layer on the color glaze layer after firing.

[0060] Furthermore, step S7 specifically includes:

[0061] S71, using a dry sieve drum to spread the glaze powder on the color glaze layer, the marking area 32 and the blank area 31, and firing at 760-780° C. for 60-70 seconds to form a glaze layer;

[0062] S72. Check the surface flatness of the glaze layer, mix the glaze powder and water to make glaze slurry, fill the surface depressions of the glaze layer with the glaze slurry, and after drying, fire at 760-780°C for 60-70s to obtain a painted enamel color plate.

[0063] Furthermore, in step S7, the sieve hole size of the dry sieve cylinder is 100-120 meshes, the particle size of the glaze powder is 130-150 meshes, and the spreading thickness of the glaze powder is 0.15-0.2 mm.

[0064] Furthermore, the drying method in step S72 is any one of air drying and drying with absorbent paper; the mass ratio of the glaze powder to water is (3.2~3.5):1.

[0065] The surface of the glaze layer prepared by the present invention is smooth, flat and transparent, which can not only protect the glaze layers of various colors and marks, but also make the distribution of the glaze layers of various colors more layered and deep visually, and make the marks more clear visually.

[0066] In the present invention, before firing, the substrate is placed on a bracket, and the bracket with the substrate is transferred to a muffle furnace; the inner lining of the muffle furnace is refractory bricks, and a heating device is arranged inside the refractory bricks of the muffle furnace to prevent the oxide scale of the heating device from falling onto the glaze surface during firing; the muffle furnace is equipped with an atmosphere control pipeline, and the atmosphere control pipeline is connected to a gas source, such as the gas source is used to supply any one of air, argon, and oxygen-enriched air; the firing bracket is made of industrial pure titanium; before the muffle furnace is used, a dust extractor is used to suck the furnace chamber to clean the dust inside to avoid affecting the surface of the color plate during firing, remove impurities adhering to the surface of the bracket, and dry it after cleaning.

[0067] In the present invention, the tool used for painting is a sable brush or a wolf brush; the tool used for filling is a sable brush or a wolf brush.

[0068] Compared with the prior art, the present invention has the following beneficial effects:

[0069] (1) The present invention forms a colored glaze layer of different types in the corresponding fan-shaped color area through painting and firing, thereby displaying the color effects of different types of colored glazes presented by the painted enamel process on the same color plate, and drawing marks on the blank area, the marking area and the colored glaze layer, so that the operator can paint and match the color when implementing the painted enamel process;

[0070] (2) The present application uses gallium, platinum and silver to compound into an anti-tarnishing silver alloy base material, which not only has a good thermal expansion coefficient matching with the enamel glaze, but also has high strength, is not easy to deform, and has good high-temperature oxidation resistance, which is conducive to ensuring the production effect of the color plate and its stability during use;

[0071] (3) Since the same type of glaze powder is ground to different particle sizes, the color depth displayed after firing is different. On the same fan-shaped color area, n fan-shaped glaze slurry layers are arranged in order from large to small in the direction away from the blank area according to the particle size of the glaze powder contained, so that the colored glaze layer formed by firing shows a color gradient effect;

[0072] (4) The surface of the glaze layer prepared by the present invention is smooth, flat and transparent, which can not only protect the various colored glaze layers and marks, but also make the distribution of the various colored glaze layers more layered and deep visually, and the various marks more clear visually. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 A top view of a substrate provided by the present invention;

[0074] Figure 2 A longitudinal cross-sectional view of a substrate provided by the present invention;

[0075] Figure 3 A top view of the painted enamel color plate provided by the present invention;

[0076] Figure 4 A longitudinal section of the painted enamel color plate provided by the present invention;

[0077] Figure 5 A topographical image of a substrate provided by the present invention;

[0078] Figure 6 This is a test result diagram of the surface roughness provided by the present invention. DETAILED DESCRIPTION

[0079] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0080] In the following examples, the purity of gallium is 99.95 wt %, the purity of platinum is 99.95 wt %, and the purity of silver is 99.9 wt %.

[0081] In the following embodiments, the inner lining of the muffle furnace is refractory bricks, and a heating device is arranged inside the refractory bricks of the muffle furnace to prevent the oxide scale of the heating device from falling onto the glaze surface during firing; the muffle furnace is equipped with an atmosphere control pipeline, and the atmosphere control pipeline is connected to a gas source, such as the gas source is used to supply any one of air, argon, and oxygen-enriched air.

[0082] In the following embodiments, the sintered bracket is made of industrial pure titanium.

[0083] In the following embodiments, before each firing step, impurities adhering to the surface of the bracket are removed, cleaned and dried; a vacuum cleaner is used to vacuum the furnace to clean the dust inside to avoid affecting the surface of the color plate during firing.

[0084] In the following embodiments, unless otherwise specified, the object to be fired must be placed on a support before firing, with the side of the object to be fired facing upward, and the support and the object to be fired are placed in the furnace together.

[0085] In the following embodiments, the wolf hair brush or mink hair brush was washed with deionized water before each use.

[0086] Example 1

[0087] This embodiment provides a painted enamel color plate, the structure of which is as follows Figures 1 to 4 shown.

[0088] The painted enamel color plate comprises a base, and the base comprises a body 1 and a convex ring 2; the body 1 is a hollow spherical segment structure, the body 1 has a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 are opposite, the first surface 11 and the second surface 12 are concentric spherical crown-shaped curved surfaces, the diameter of the spherical crown-shaped curved surface where the first surface 11 is located is 48 mm, the wall thickness h of the body 1 is 0.9 mm, and the spherical segment height H of the body 1 is 3.2 mm;

[0089] The first surface 11 of the carcass 1 is provided with 12 wire grooves 13, the groove depth of the wire groove 13 is 0.12 mm, the width of the wire groove 13 is 0.15 mm, the opening center axis of the wire groove 13 passes through the center of the first surface 11, and the angle between the opening center axes of any two adjacent wire grooves 13 is 30°;

[0090] The convex ring 2 is arranged on the first surface 11 of the carcass 1, the width of the convex ring 2 is 1.2 mm, and the convex ring 2 protrudes 0.4 mm relative to the first surface 11;

[0091] A bottom glaze layer 3 is provided on the first surface 11 of the body 1, and a back glaze layer 4 is provided on the second surface 12 of the body 1. The bottom glaze layer 3 is divided into a blank area 31 and a painting area. The blank area 31 is located in the center of the bottom glaze layer 3. The blank area 31 is circular. The diameter of the blank area 31 is 12 mm. The painting area is located between the blank area 31 and the convex ring 2. The painting area includes 18 evenly distributed fan-shaped color areas 32. The central angle of each fan-shaped color area 32 is 3.5°. A marking area 33 is left between any two adjacent fan-shaped color areas 32. A colored glaze layer 5 is provided on the surface of each fan-shaped color area 32. The types of colored glazes contained in any two adjacent colored glaze layers 5 are different. A finishing glaze layer 6 is provided on the colored glaze layer 5.

[0092] The preparation method of the painted enamel color plate comprises the following steps:

[0093] S1. Preparation of substrate

[0094] S11, prepare the following base materials in percentage by weight: 0.7% gallium, 1.3% platinum and 98% silver; put the base materials into a vacuum melting furnace for melting, cast into ingots, roll until the rolling amount reaches 85%, anneal at 680° C. for 240 seconds, and obtain a base sheet with a thickness of 0.9 mm;

[0095] S12, punching the base sheet obtained in step S11 into a blank using a punching die;

[0096] S13, annealing the slab obtained in step S12 at 680° C. for 240 seconds, then pressing the annealed slab into a shape using a hydraulic die, and then removing the flash using a trimming die to obtain a formed blank;

[0097] S14, annealing the molded blank obtained in step S13 at 670° C. for 240 seconds, then degreasing the annealed molded blank, cleaning it, and air-drying it to obtain a substrate;

[0098] The spherical crown surface of the obtained substrate was tested for morphology and surface roughness. The test results are as follows: Figures 5 and 6 As shown in the figure, the spherical crown surface was tested to be a sandblasted surface with an average surface roughness of 0.75 μm.

[0099] S2. Preparation of bottom glaze layer and back glaze layer

[0100] S21, placing the obtained substrate on a clean bracket, with the first surface 11 of the body 1 facing upward; using a dry sieve cylinder with a mesh size of 120 meshes, evenly spreading white glaze powder with a particle size of 140 meshes on the first surface 11 of the body 1, with a spreading thickness of 0.25 mm, and using a wool broom to clean the white glaze powder scattered on the bracket; then sending the bracket together with the substrate into a muffle furnace preheated to 810°C, keeping warm and firing for 45 seconds, and then taking it out and air-cooling it to room temperature;

[0101] Repeat the above step S21 to form a bottom glaze layer 3 on the first surface 11 of the carcass 1;

[0102] S22, turn the substrate over so that the second surface 12 of the body 1 faces upward; use a dry sieve cylinder with a sieve size of 120 meshes to evenly spread white glaze powder with a particle size of 140 meshes on the second surface 12 of the body, with a spreading thickness of 0.25 mm, and use a wool broom to clean up the white glaze powder scattered on the bracket; then send the bracket and the substrate together into a muffle furnace preheated to 810°C, and fire for 55 seconds, so as to form a back glaze layer 4 on the second surface 12 of the body 1, and then take it out and air cool it to room temperature;

[0103] S23. Check the flatness of the bottom glaze layer 3, use a corundum rod to grind and flatten the raised parts in the bottom glaze layer 3, then use a contoured corundum wheel to grind the bottom glaze layer 3 flat, and use a corundum needle to grind away the bubbles and impurity spots in the bottom glaze layer 3 to form a tiny bowl-shaped depression; moisten the white glaze powder with a particle size of 140 mesh with deionized water, the mass ratio of the white glaze powder to deionized water is 3.4:1, and then use a 0# wolf hair brush to dip the moistened white glaze powder to fill the depression, after drying with absorbent paper, send it into a muffle furnace preheated to 810℃, and fire it for 50s to make the surface of the bottom glaze layer 3 smooth, flat, dense, and uniform in color.

[0104] S3. Divide the area

[0105] In order to ensure the standard of color zoning rules, circular lines are drawn on the base glaze layer 3, thereby dividing the base glaze layer 3 into a blank area 31 and a painting area; a soft ruler and a marking needle are used to draw radial lines in the painting area to form a consistent color zoning frame mark, marking out 18 evenly distributed fan-shaped color areas 32, and a gap is left between any two adjacent fan-shaped color areas 32, and the gap is a marking area 33.

[0106] S4. Prepare glaze slurry

[0107] 18 different types of red glazes were prepared, and the color values ​​of different types of red glazes were different. The same type of red glaze was put into the agate jar of a high-energy ball mill and ball-milled with agate balls. The glazes were then passed through five sieves with different mesh sizes to obtain five kinds of glaze powders, which were then mixed with water to form five kinds of glaze slurries. The mesh sizes of the five sieves were 300 mesh, 800 mesh, 1300 mesh, 1800 mesh and 2300 mesh respectively. The mass ratio of glaze powder to deionized water in each glaze slurry was 3.8:1.

[0108] S5. Preparation of colored glaze layer

[0109] S51, placing the substrate on the bracket so that the first surface 11 of the body 1 faces upward, and using a 00# mink brush to dip into the colored glaze slurry prepared in step S4 to draw five fan-shaped glaze slurry layers on the surface of each fan-shaped color area, and controlling the thickness of the fan-shaped glaze slurry layer to be 0.05-0.1mm, the five fan-shaped glaze slurry layers on the same fan-shaped color area have the same type of glaze powder, and the five fan-shaped glaze slurry layers on the same fan-shaped color area are arranged in order from large to small according to the particle size of the glaze powder contained in the direction away from the blank area;

[0110] S52, using absorbent paper to absorb the moisture in each fan-shaped glaze slurry layer, then putting the base and the bracket into a muffle furnace, using the hot air on the top of the muffle furnace to air-dry each fan-shaped glaze slurry layer; firing at 750-760° C. in an argon atmosphere for 55 seconds to form a colored glaze layer 5, and taking it out after cooling;

[0111] S53. Check the quality of the painted colored glaze layer 5, including the integrity, smoothness, color, etc. of the surface of the colored glaze layer 5. Use a diamond needle to remove bubbles and mottled spots on the surface of the colored glaze layer 5 to form a miniature bowl-shaped depression with an opening facing upward. Use a 000# mink brush to fill in the depression with corresponding colored glaze slurry, and fire it in an argon atmosphere at 750-760°C for 55s to form the colored glaze layer 5, which is then taken out after cooling.

[0112] S6. Color plate marking

[0113] S61, using a 00# wolf hair brush dipped in the most eye-catching color glaze slurry in step S4 to paint the upper red color number REG1 (the first letter of Red Enamelling Glaze) in the blank area 31;

[0114] S62, at a position corresponding to the colored glaze layer 5 in the marking area 33, use a 00# wolf hair brush dipped in the colored glaze slurry prepared in step S4 to draw a particle size mark of the contained colored glaze powder;

[0115] S63, using the color glaze slurry prepared in step S4 to draw corresponding color glaze model marks on the corresponding color glaze layer 5, using absorbent paper to absorb the water in each mark, firing in an argon atmosphere at 750-760° C. for 55 seconds, and taking out after cooling;

[0116] S64, using laser to cut out the firing process parameter mark in step S5 (including firing atmosphere argon gas and firing temperature 750-760° C.) on the surface of the convex ring 2.

[0117] S7, preparing glaze layer

[0118] S71, using a dry sieve with a mesh size of 110 meshes, evenly spread the transparent colorless glaze powder with a particle size of 140 meshes on the color glaze layer 5, the marking area 32 and the blank area 31, with a spreading thickness of 0.16-0.18 mm; using a wool brush to clean the glaze powder scattered on the bracket, firing at 760-770°C for 65 seconds to form a glaze layer 6;

[0119] S72. Check the flatness of the surface of the glaze layer 6, mix the glaze powder and water to make a glaze slurry, the mass ratio of the glaze powder to water is 3.4:1; use a 00# wolf hair brush to dip the glaze slurry and fill it in the concave areas on the surface of the glaze layer 6, dry it with absorbent paper, and fire it at 760-770℃ for 65s to make the entire glazing surface smooth, flat and transparent, and also make the colored glaze layer 5 look more layered and deep, with clear and firm markings, to obtain a painted enamel color plate.

[0120] S8. Make a color palette collection

[0121] The foldable color plate collection album is made of environmentally friendly plywood, each foldable plate is made into a box shape, a hard sponge is embedded in the box, a color plate mounting hole is opened on the sponge, and the painted enamel color plate is embedded in the hole.

[0122] Therefore, the painted enamel color plate prepared in this embodiment is intuitive and stable, convenient for reference, and easy for use and storage.

[0123] Example 2

[0124] This embodiment provides a painted enamel color plate, the structure of which is as follows Figures 1 to 4 shown.

[0125] The painted enamel color plate comprises a base, and the base comprises a body 1 and a convex ring 2; the body 1 is a hollow spherical segment structure, the body 1 has a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 are opposite, the first surface 11 and the second surface 12 are concentric spherical crown curved surfaces, the diameter of the spherical crown curved surface where the first surface 11 is located is 45 mm, the wall thickness h of the body 1 is 0.8 mm, and the spherical segment height H of the body 1 is 2.5 mm;

[0126] The first surface 11 of the carcass 1 is provided with 12 wire grooves 13, the groove depth of the wire groove 13 is 0.15 mm, the width of the wire groove 13 is 0.1 mm, the opening center axis of the wire groove 13 passes through the center of the first surface 11, and the angle between the opening center axes of any two adjacent wire grooves 13 is 30°;

[0127] The convex ring 2 is arranged on the first surface 11 of the carcass 1, the width of the convex ring 2 is 1.0 mm, and the convex ring 2 protrudes 0.3 mm relative to the first surface 11;

[0128] The first surface 11 of the body 1 is provided with a bottom glaze layer 3, and the second surface 12 of the body 1 is provided with a back glaze layer 4. The bottom glaze layer 3 is divided into a blank area 31 and a painting area. The painting area includes 16 evenly distributed fan-shaped color areas 32. The central angle of each fan-shaped color area 32 is 4°, and a marking area 33 is left between any two adjacent fan-shaped color areas 32; the surface of each fan-shaped color area 32 is provided with a colored glaze layer 5, and the types of colored glazes contained in any two adjacent colored glaze layers 5 are different. A finishing glaze layer 6 is provided on the colored glaze layer 5.

[0129] The preparation method of the painted enamel color plate comprises the following steps:

[0130] S1. Preparation of substrate

[0131] S11, prepare the following base materials in percentage by weight: 0.5% gallium, 1.5% platinum and 98% silver; put the base materials into a vacuum melting furnace for melting, cast into ingots, roll until the rolling amount reaches 90%, anneal at 700° C. for 180 seconds, and obtain a base sheet with a thickness of 0.8 mm;

[0132] S12, punching the base sheet obtained in step S11 into a blank using a punching die;

[0133] S13, annealing the slab obtained in step S12 at 700° C. for 180 seconds, then pressing the annealed slab into a shape using a hydraulic die, and then removing the flash using a trimming die to obtain a formed blank;

[0134] S14, annealing the molded blank obtained in step S13 at 700° C. for 180 seconds, then degreasing the annealed molded blank, cleaning it, and air-drying it to obtain a substrate;

[0135] The spherical crown surface of the obtained substrate was subjected to morphology testing and surface roughness testing. The test results showed that the spherical crown surface had a sandblasted surface morphology and an average surface roughness of 0.7 μm.

[0136] S2. Preparation of bottom glaze layer and back glaze layer

[0137] S21, placing the obtained substrate on a clean support, with the first surface 11 of the body 1 facing upward; using a dry sieve cylinder with a mesh size of 100 mesh, evenly spreading black glaze powder with a particle size of 120 mesh on the first surface 11 of the body 1, with a spreading thickness of 0.25 mm, and using a wool broom to clean the black glaze powder scattered on the support; then sending the support together with the substrate into a muffle furnace preheated to 830°C, keeping warm and firing for 40 seconds, forming a bottom glaze layer 3 on the first surface 11 of the body 1, and air-cooling to room temperature after taking out;

[0138] Repeat the above step S21 to form a bottom glaze layer 3 on the first surface 11 of the carcass 1;

[0139] S22, turning the substrate over so that the second surface 12 of the body 1 faces upward; using a dry sieve cylinder with a mesh size of 100 meshes, evenly spreading black glaze powder with a particle size of 120 meshes on the second surface 12 of the body, with a spreading thickness of 0.3 mm, and using a wool broom to clean up the black glaze powder scattered on the bracket; then sending the bracket together with the substrate into a muffle furnace preheated to 820°C, firing for 60 seconds, thereby forming a back glaze layer 4 on the second surface 12 of the body 1, and air-cooling to room temperature after taking out;

[0140] S23. Check the flatness of the bottom glaze layer 3, use a corundum rod to grind and flatten the raised parts of the bottom glaze layer 3, then use a contoured corundum wheel to grind and flatten the bottom glaze layer 3, and use a corundum needle to grind away the bubbles and impurity spots to form an open tiny bowl-shaped depression; moisten the black glaze powder with a particle size of 120 mesh with deionized water, the mass ratio of the black glaze powder to deionized water is 3:1, and then use a 0# wolf hair brush to dip the moistened black glaze powder into the opening, after drying with absorbent paper, send the bracket together with the base into the muffle furnace preheated to 830°C again, and fire for 40s to make the surface of the bottom glaze layer 3 smooth, flat, dense, and uniform in color.

[0141] S3. Divide the area

[0142] In order to ensure the standard of color zoning rules, circular lines are drawn on the base glaze layer 3, thereby dividing the base glaze layer 3 into a blank area 31 and a painting area; a soft ruler and a marking needle are used to draw radial lines in the painting area to form a consistent color zoning frame mark, marking out 16 fan-shaped color areas 32, and a gap is left between any two adjacent fan-shaped color areas 32, and the gap is a marking area 33.

[0143] S4. Prepare glaze slurry

[0144] Sixteen different types of gold-colored glazes were prepared, and the same type of gold-colored glazes were put into the agate pot of a high-energy ball mill and ball-milled with agate balls. The glazes were then passed through five sieves with different mesh sizes to obtain five kinds of glaze powders, which were respectively mixed with water to form five kinds of glaze slurries. The mesh sizes of the five sieves were 500 mesh, 1000 mesh, 1500 mesh, 2000 mesh and 2500 mesh respectively. The mass ratio of glaze powder to deionized water in each kind of glaze slurry was 3.4:1.

[0145] S5. Preparation of colored glaze layer

[0146] S51, placing the substrate on the bracket so that the first surface 11 of the body 1 faces upward, and using a 00# mink brush to dip into the colored glaze slurry prepared in step S4 to draw five fan-shaped glaze slurry layers on the surface of each fan-shaped color area, and controlling the thickness of the fan-shaped glaze slurry layer to be 0.05-0.1mm, the five fan-shaped glaze slurry layers on the same fan-shaped color area have the same type of glaze powder, and the five fan-shaped glaze slurry layers on the same fan-shaped color area are arranged in order from large to small according to the particle size of the glaze powder contained in the direction away from the blank area;

[0147] S52, using absorbent paper to absorb the moisture in each fan-shaped glaze slurry layer, then putting the base and the bracket into a muffle furnace, using the hot air on the top of the muffle furnace to air-dry each fan-shaped glaze slurry layer; firing at 770-780° C. in an air atmosphere for 50-60 seconds to form a colored glaze layer 5, and taking it out after cooling;

[0148] S53. Check the quality of the painted colored glaze layer 5, including the integrity, smoothness, color, etc. of the surface of the colored glaze layer 5. Use a diamond needle to remove bubbles and mottled spots on the surface of the colored glaze layer 5 to form a miniature bowl-shaped depression with an opening facing upward. Use a 000# mink brush to fill in the depression with corresponding colored glaze slurry, and fire it in an air atmosphere at 770~780℃ for 50~60s to form the colored glaze layer 5, and take it out after cooling.

[0149] S6. Color plate marking

[0150] S61, using a 00# wolf hair brush to dip into the most eye-catching color glaze slurry in step S4 to draw the color system number of the upper gold color glaze in the blank area 31;

[0151] S62, at a position in the marking area 3 corresponding to the colored glaze layer 5, using a 00# wolf hair brush dipped in the colored glaze slurry prepared in step S4 to draw a particle size mark of the contained colored glaze powder;

[0152] S63, using the color glaze slurry prepared in step S4 to draw corresponding color glaze model marks on the corresponding color glaze layer 5, using absorbent paper to absorb the water in each mark, firing at 770-780° C. in an air atmosphere for 50-60 seconds, and taking out after cooling;

[0153] S64, using laser to cut the process parameters of the firing treatment in step S5 on the surface of the convex ring 2.

[0154] S7, preparing glaze layer

[0155] S71, using a dry sieve with a mesh size of 110 meshes, evenly spread the transparent colorless glaze powder with a particle size of 130 meshes on the color glaze layer 5, the marking area 32 and the blank area 31, with a spreading thickness of 0.18-0.2 mm; using a wool brush to clean the glaze powder scattered on the bracket, firing at 770-780°C for 60 seconds to form a glaze layer 6;

[0156] S72. Check the flatness of the surface of the glaze layer 6, mix the glaze powder and water to make a glaze slurry, the mass ratio of the glaze powder to water is 3.2:1; use a 00# wolf hair brush to dip the glaze slurry and fill it in the concave parts of the surface of the glaze layer 6, dry it with absorbent paper, and fire it at 770-780℃ for 60s to make the entire glazing surface smooth, flat and transparent, and also make the colored glaze layer 5 look more layered and deep, with clear and firm markings, to obtain a painted enamel color plate.

[0157] S8. Make a color palette collection

[0158] The foldable color plate collection album is made of environmentally friendly plywood, each foldable plate is made into a box shape, a hard sponge is embedded in the box, a color plate mounting hole is opened on the sponge, and the painted enamel color plate is embedded in the hole.

[0159] Therefore, the painted enamel color plate prepared in this embodiment is intuitive and stable, convenient for reference, and easy for use and storage.

[0160] Example 3

[0161] This embodiment provides a painted enamel color plate, the structure of which is as follows Figures 1 to 4 shown.

[0162] The painted enamel color plate comprises a base, and the base comprises a body 1 and a convex ring 2; the body 1 is a hollow spherical segment structure, the body 1 has a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 are opposite, the first surface 11 and the second surface 12 are concentric spherical crown curved surfaces, the diameter of the spherical crown curved surface where the first surface 11 is located is 50 mm, the wall thickness h of the body 1 is 1.0 mm, and the spherical segment height H of the body 1 is 4.0 mm;

[0163] The first surface 11 of the carcass 1 is provided with 12 wire grooves 13, the groove depth of the wire groove 13 is 0.12 mm, the width of the wire groove 13 is 0.1 mm, the opening center axis of the wire groove 13 passes through the center of the first surface 11, and the angle between the opening center axes of any two adjacent wire grooves 13 is 30°;

[0164] The convex ring 2 is arranged on the first surface 11 of the carcass 1, the width of the convex ring 2 is 1.5 mm, and the convex ring 2 protrudes 0.5 mm relative to the first surface 11;

[0165] A bottom glaze layer 3 is provided on the first surface 11 of the body 1, and a back glaze layer 4 is provided on the second surface 12 of the body 1. The bottom glaze layer 3 is divided into a blank area 31 and a painting area. The blank area 31 is located in the center of the bottom glaze layer 3. The blank area 31 is circular. The diameter of the blank area 31 is 12 mm. The painting area is located between the blank area 31 and the convex ring 2. The painting area includes 24 evenly distributed fan-shaped color areas 32. The central angle of each fan-shaped color area 32 is 3°. A marking area 33 is left between any two adjacent fan-shaped color areas 32. A colored glaze layer 5 is provided on the surface of each fan-shaped color area 32. The types of colored glazes contained in any two adjacent colored glaze layers 5 are different. A finishing glaze layer 6 is provided on the colored glaze layer 5.

[0166] The preparation method of the painted enamel color plate comprises the following steps:

[0167] S1. Preparation of substrate

[0168] S11, prepare the following base materials in percentage by weight: 1.0% gallium, 1.0% platinum and 98% silver; put the base materials into a vacuum melting furnace for melting, cast into ingots, roll until the rolling amount reaches 80%, anneal at 650° C. for 300 seconds, and obtain a base sheet with a thickness of 0.8 mm;

[0169] S12, punching the base sheet obtained in step S11 into a blank using a punching die;

[0170] S13, annealing the slab obtained in step S12 at 650° C. for 300 seconds, then pressing the annealed slab into a shape using a hydraulic mold, and then removing the flash using a trimming mold to obtain a molded blank;

[0171] S14, annealing the molded blank obtained in step S13 at 650° C. for 300 seconds, then degreasing the annealed molded blank, cleaning it, and air-drying it to obtain a substrate;

[0172] The spherical crown surface of the obtained substrate was subjected to morphology testing and surface roughness testing. The test results showed that the spherical crown surface had a sandblasted surface morphology and an average surface roughness of 0.8 μm.

[0173] S2. Preparation of bottom glaze layer and back glaze layer

[0174] S21, placing the obtained substrate on a clean bracket, with the first surface 11 of the body 1 facing upward; using a dry sieve cylinder with a mesh size of 120 meshes, evenly spreading white glaze powder with a particle size of 140 meshes on the first surface 11 of the body 1, with a spreading thickness of 0.25 mm, and using a wool broom to clean up the white glaze powder scattered on the bracket; then sending the bracket together with the substrate into a muffle furnace preheated to 810°C, keeping the temperature and firing for 50 seconds, forming a bottom glaze layer 3 on the first surface 11 of the body 1, and air-cooling to room temperature after taking out;

[0175] Repeat the above step S21 to form two bottom glaze layers 3 on the first surface 11 of the carcass 1;

[0176] S22, turning the substrate over so that the second surface 12 of the body 1 faces upward; using a dry sieve cylinder with a sieve size of 120 meshes, evenly spreading white glaze powder with a particle size of 140 meshes on the second surface 12 of the body, with a spreading thickness of 0.2 mm, and using a wool broom to clean the white glaze powder scattered on the bracket; then sending the bracket together with the substrate into a muffle furnace preheated to 810°C, keeping the temperature and firing for 60 seconds, so as to form a back glaze layer 4 on the second surface 12 of the body 1, and then taking it out and air cooling it to room temperature;

[0177] S23. Check the flatness of the bottom glaze layer 3, use a carborundum rod to grind and flatten the raised parts of the bottom glaze layer 3, then use a contoured carborundum wheel to grind and flatten the bottom glaze layer 3, and use a carborundum needle to grind away the bubbles and impurity spots to form an open tiny bowl-shaped depression; moisten the white glaze powder with water, the mass ratio of the white glaze powder to deionized water is 3.6:1, then use a 0# wolf hair brush to dip the moistened white glaze powder into the depression, after drying with absorbent paper, send the bracket together with the base into the muffle furnace preheated to 810℃ again, and keep warm and fire for 60s to make the surface of the bottom glaze layer 3 smooth, flat, dense and uniform in color.

[0178] S3. Divide the area

[0179] In order to ensure the standard of color zoning rules, circular lines are drawn on the base glaze layer 3, thereby dividing the base glaze layer 3 into a blank area 31 and a painting area; a soft ruler and a marking needle are used to draw radial lines in the painting area to form a consistent color zoning frame mark, marking out 24 evenly distributed fan-shaped color areas 32, and a gap is left between any two adjacent fan-shaped color areas 32, and the gap is a marking area 33.

[0180] S4. Prepare glaze slurry

[0181] 24 different types of green glazes were prepared, and different types of red glazes belonged to different red color systems. The same type of green glaze was put into the agate jar of a high-energy ball mill and milled with agate balls. The glazes were then passed through five sieves with different mesh sizes to obtain five glaze powders, which were then mixed with water to form five glaze slurries. The mesh sizes of the five sieves were 400 mesh, 900 mesh, 1400 mesh, 1900 mesh and 2400 mesh respectively. The mass ratio of glaze powder to deionized water in each glaze slurry was 4.1:1.

[0182] S5. Preparation of colored glaze layer

[0183] S51, placing the substrate on the bracket so that the first surface 11 of the body 1 faces upward, and using a 00# mink brush to dip into the colored glaze slurry prepared in step S4 to draw five fan-shaped glaze slurry layers on the surface of each fan-shaped color area, and controlling the thickness of the fan-shaped glaze slurry layer to be 0.05-0.1mm, the five fan-shaped glaze slurry layers on the same fan-shaped color area have the same type of glaze powder, and the five fan-shaped glaze slurry layers on the same fan-shaped color area are arranged in order from large to small according to the particle size of the glaze powder contained in the direction away from the blank area;

[0184] S52, using absorbent paper to absorb the moisture in each fan-shaped glaze slurry layer, then putting the base and the bracket into a muffle furnace, using the hot air on the top of the muffle furnace to air-dry each fan-shaped glaze slurry layer; firing at 790-800° C. for 50 seconds in an oxygen-rich air atmosphere to form a colored glaze layer 5, and taking it out after cooling;

[0185] S53, check the quality of the painted color glaze layer 5, including the integrity, smoothness, color, etc. of the surface of the color glaze layer 5, remove the bubbles and mottled spots on the surface of the color glaze layer 5 with a diamond needle, and form a miniature bowl-shaped depression with an opening facing upward; use a 000# mink brush to fill the depression with the corresponding color glaze slurry, and fire it at 790-800°C for 50s in an oxygen-rich air atmosphere, and take it out after cooling;

[0186] S6. Color plate marking

[0187] S61, using a 00# wolf hair brush to dip into the most eye-catching color glaze slurry in step S4 to draw the color system number of the upper green color glaze in the blank area 31;

[0188] S62, at a position in the marking area 3 corresponding to the colored glaze layer 5, using a 00# wolf hair brush dipped in the colored glaze slurry prepared in step S4 to draw a particle size mark of the contained colored glaze powder;

[0189] S63, using the glaze slurry prepared in step S4 to draw corresponding glaze model marks on the corresponding glaze layer 5, using absorbent paper to absorb the water in each mark, firing at 790-800° C. for 50 seconds in an oxygen-rich air atmosphere, and taking out after cooling;

[0190] S64, using laser to cut out the process parameters of the firing treatment in step S5 on the surface of the convex ring 2.

[0191] In step S52, step S53 and step S63, oxygen is introduced into the muffle furnace at a flow rate of 6 sccm during firing, thereby forming an oxygen-rich air atmosphere in the muffle furnace.

[0192] S7, preparing glaze layer

[0193] S71, using a dry sieve with a mesh size of 110 meshes, evenly spread the transparent colorless glaze powder with a particle size of 140 meshes on the color glaze layer 5, the marking area 32 and the blank area 31, with a spreading thickness of 0.15-0.17 mm; using a wool brush to clean the glaze powder scattered on the bracket, firing at 760-780°C for 70 seconds to form a glaze layer 6;

[0194] S72. Check the flatness of the surface of the glaze layer 6, mix the glaze powder and water to make glaze slurry, the mass ratio of glaze powder to water is 3.5:1; use a 00# wolf hair brush to dip the glaze slurry and fill it in the concave areas on the surface of the glaze layer 6, dry it with absorbent paper, put it into the furnace again (with the glaze layer 6 facing up), and fire it at 760-780℃ for 70s to make the entire glazing surface smooth, flat and transparent, and also make the colored glaze layer 5 look more layered and deep, with clear and firm markings, to obtain a painted enamel color plate.

[0195] S8. Make a color palette collection

[0196] The foldable color plate collection album is made of environmentally friendly plywood, each foldable plate is made into a box shape, a hard sponge is embedded in the box, a color plate mounting hole is opened on the sponge, and the painted enamel color plate is embedded in the hole.

[0197] Therefore, the painted enamel color plate prepared in this embodiment is intuitive and stable, convenient for reference, and easy for use and storage.

[0198] It should be understood that in the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0199] It should be understood that in the description of the present invention, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A method for preparing a painted enamel color plate, characterized in that: The steps include: S1. Melting a base material to form a base, the base comprising a matrix and a convex ring, the matrix having a first surface and a second surface, the first surface and the second surface being opposite to each other, the convex ring being arranged on the periphery of the first surface of the matrix; the base material comprising the following components in weight percentage: 0.5-1.0% gallium, 1-1.5% platinum, and balance silver; S2, spreading glaze powder on the first surface of the body, and forming a bottom glaze layer on the first surface after firing; spreading glaze powder on the second surface of the body, and forming a back glaze layer on the second surface after firing; S3, dividing the bottom glaze layer into a blank area and a drawing area, wherein the blank area is located in the center of the bottom glaze layer, and the drawing area is located between the blank area and the convex ring; dividing the drawing area into at least two sector-shaped color areas, and leaving a marking area between any two adjacent sector-shaped color areas; S4, using N types of colored glazes to prepare colored glaze slurries respectively, where N is equal to the number of the fan-shaped color areas; S5, using the glaze slurry prepared in step S4 to paint a fan-shaped glaze slurry layer on the fan-shaped color area, the fan-shaped glaze slurry layers on any two adjacent fan-shaped color areas contain different types of colored glaze, and after firing treatment, a colored glaze layer is formed on the fan-shaped color area; S6. Use the glaze slurry prepared in step S4 to draw marks on the blank area, the marking area and the colored glaze layer, dry the marks and then perform a firing process; cut the process parameters of the firing process in step S5 on the surface of the convex ring.

2. The method for preparing the painted enamel color plate according to claim 1, characterized in that: In step S1, the carcass is a hollow spherical segment structure, the first surface and the second surface are concentric spherical crown surfaces, the diameter of the spherical crown surface where the first surface is located is 45-50 mm, the wall thickness of the carcass is 0.8-1.0 mm, and the spherical segment height of the carcass is 2.5-4.0 mm; the surface roughness of the carcass is 0.7-0.8 μm; at least two wire grooves are provided on the first surface of the carcass, the angle between the central axes of the openings of any two adjacent wire grooves is 10-60°, the width of the wire groove is 0.1-0.2 mm, and the groove depth is 0.1-0.15 mm; the width of the convex ring is 1.0-1.5 mm, and the convex ring protrudes 0.3-0.5 mm relative to the first surface.

3. The method for preparing the painted enamel color plate according to claim 1, characterized in that: Step S1 specifically includes: S11, after melting the base material, casting it into an ingot, rolling it until the rolling amount reaches 80-90%, annealing it at 650-700° C. for 180-300 seconds, and obtaining a base sheet with a thickness of 0.8-1 mm; S12, punching the base sheet obtained in step S11 into a blank using a punching die; S13, annealing the slab obtained in step S12 at 650-700° C. for 180-300 seconds, then pressing the annealed slab into a shape using a hydraulic die, and then removing the flash using a trimming die to obtain a formed blank; S14, annealing the molded blank obtained in step S13 at 650-700°C for 180-300s, then degreasing the annealed molded blank, cleaning it, and air-drying it to obtain a substrate.

4. The method for preparing the painted enamel color plate according to claim 1, characterized in that: Step S2 specifically includes: S21, spreading glaze powder on the first surface of the body by using a dry sieve drum, firing at 810-830° C. for 40-50 seconds, and forming a bottom glaze layer on the first surface of the body after repeated spreading and firing; S22, spreading the glaze powder on the second surface of the body by using a dry sieve drum, firing at 810-830° C. for 50-60 seconds, and forming a back glaze layer on the second surface of the body.

5. The method for preparing the painted enamel color plate according to claim 1, characterized in that: In step S3, the diameter of the blank area is 10-15 mm; the drawing area is divided into 16-24 sector-shaped color areas, and the central angle of the sector-shaped color area is 3-4°.

6. The method for preparing the painted enamel color plate according to claim 1, characterized in that: Step S4 specifically includes: N types of glazes are prepared, and after grinding the glazes of the same type, they are respectively passed through sieves with n mesh sizes to obtain n types of glaze powders, and the n types of glaze powders are mixed with water to form n types of glaze slurries; n is a positive integer, and n≥2.

7. The method for preparing the painted enamel color plate according to claim 1, characterized in that: Step S5 specifically includes: S51, on the surface of each sector-shaped color area, using the colored glaze slurry prepared in step S4 to draw five sector-shaped glaze slurry layers, the five sector-shaped glaze slurry layers on the same sector-shaped color area contain the same type of glaze powder, and the five sector-shaped glaze slurry layers on the same sector-shaped color area are arranged in order from large to small in the direction away from the blank area according to the particle size of the glaze powder contained; S52, drying the fan-shaped glaze slurry layer and firing it to form a colored glaze layer.

8. The method for preparing the painted enamel color plate according to claim 1, characterized in that: Step S6 specifically includes: S61, using the glaze slurry prepared in step S4 to draw the number mark of the color system to which the glaze in step S4 belongs in the blank area; S62, at a position in the marking area corresponding to the colored glaze layer, using the colored glaze slurry prepared in step S4 to draw a particle size mark of the contained colored glaze powder; using the colored glaze slurry prepared in step S4 to draw a corresponding colored glaze model mark on the corresponding colored glaze layer; S63, drying the mark and then firing it; S64, using laser to cut the process parameters of the firing treatment in step S5 on the surface of the convex ring.

9. The method for preparing the painted enamel color plate according to claim 8, characterized in that: After step S6, the method further includes: S7, spreading the finishing glaze powder on the surface of the color glaze layer, and forming a finishing glaze layer on the color glaze layer after firing.

10. The method for preparing the painted enamel color plate according to claim 9, characterized in that: Step S7 specifically includes: S71, spreading the glaze powder on the surface of the color glaze layer by using a dry sieve drum, and firing at 760-780° C. for 60-70 seconds to form a glaze layer; S72. Check the surface flatness of the glaze layer, mix the glaze powder and water to make a glaze slurry, fill the surface depressions of the glaze layer with the glaze slurry, and after drying, fire at 760-780°C for 60-70s to obtain a painted enamel color plate.

Images