A method for manufacturing a cloisonné gem painting

Abstract

The present application relates to a kind of production methods of enamel gem painting, belong to gem painting technical field.The production method of the enamel gem painting, including the following steps: S1, by CNC machining process in the one side of matrix bottom and process out preset pattern groove;S2, enamel glaze slurry is applied in the preset pattern groove of the matrix bottom, free water of the enamel glaze slurry is absorbed, then gem is arranged in the preset pattern groove;S3, the matrix bottom treated by step S2 is fired;S4, the matrix bottom treated by step S3 is cleaned and is pulled out sand treatment.The present application uses enamel glaze slurry to replace high polymer binder, the density of gem particle is larger, gem sinks after gem arrangement, by firing, form structure compact and internal pressure stress glaze layer, the glaze layer formed is wrapped around the bottom of gem, can stably fix gem in situ.

Description

Technical Field

[0001] This invention relates to the field of gemstone painting technology, and more particularly to a method for producing enamel gemstone paintings. Background Technology

[0002] Gemstone painting originated in the Ming and Qing dynasties, reaching its peak during the reign of Emperor Qianlong of the Qing dynasty. It was a luxury item favored by royalty and nobility, and also an important gift in foreign relations. The basic process of traditional gemstone painting is as follows: First, a draft is drawn based on the design, and various gemstone materials are prepared. After preliminary preparation, a preview is made on the draft according to the printed image. Based on the background color and overall artistic effect, the required colored gemstones are prepared. Gemstone powder is then sprinkled layer by layer, from dark to light. After each layer of background color is allowed to air dry naturally until the desired gradient effect is achieved, it undergoes a natural air-drying and dehumidification process for 6-8 hours. After the entire painting is completed, it undergoes another 8-12 hours of natural air-drying and dehumidification. Finally, the entire painting is cleaned, and each gemstone is polished again before being framed. However, this traditional gemstone painting technique has several prominent drawbacks: First, the plastic-like luster of the adhesive surface cannot match the luster of the gemstone itself, inevitably damaging the quality of the gemstone painting; second, the adhesive has poor weather resistance and water resistance, and after a certain period of time, it will turn yellow and crack, further reducing the artistic effect of the gemstone painting and making the gemstones prone to falling out; third, most colored gemstones are pleochroic, showing different colors and shades when viewed from different directions, making it difficult to find a suitable combination of gemstones to form an ideal picture, thus affecting the consistency of colors in the picture and detracting from the beauty and artistic value of the gemstone painting.

[0003] Gemstone painting techniques have been passed down to the present day, and the industry has attempted to innovate and improve them, achieving some results. However, overall, these innovations are still based on adhesive systems, and the overall production process of gemstone painting has not undergone significant changes. Its inherent defects and shortcomings have not been effectively resolved. For example, CN105904911A discloses a method for making gemstone paintings. It involves spraying latex paint along the outline of a pattern drawn on a substrate, sprinkling gemstone powder on the latex paint to form the outline of the gemstone layer; in the first gemstone layer, gemstone paste is applied to the main body of the gemstone painting, and then sprinkling gemstone powder of the desired color; latex paint is applied to non-main body areas, and gemstone powder is sprinkled on the latex paint; gemstone powder is sprinkled on areas without a picture, and then banana oil is sprinkled on; in the second gemstone layer, latex paint is applied to the main body of the gemstone painting, and gemstone particles are adhered to the main body; finally, colored pigments are used to refine the lines of the gemstone painting, gloss varnish is sprayed onto the gemstone painting, and it is allowed to dry naturally.

[0004] Chinese patent application CN113619320A discloses a gemstone painting and its manufacturing method. The painting comprises drawing paper, a painting layer, an adhesive layer, and gemstones. The painting layer is placed on the drawing paper, the adhesive layer is placed on the painting layer, and the gemstones have an adhesive surface. The gemstones are adhered to the adhesive layer through the adhesive surface, which is a manually cut and polished flat surface perpendicular to the optical axis of the gemstones. The manufacturing method is as follows: the painting layer is drawn manually on the drawing paper; the gemstones are oriented using a dichroscope to determine their optical axis direction; a flat surface perpendicular to the optical axis of the gemstones is cut and polished to serve as the adhesive surface; a transparent high-strength adhesive is applied to the painting layer to form the adhesive layer; the gemstones are adhered to the adhesive layer through the adhesive surface, which is parallel to the adhesive layer; the gemstone painting is allowed to air dry or dehumidify for 30–60 minutes, then sealed and stored for 24–48 hours; after unsealing, it is stored in a natural environment for 24 hours, and the entire painting is cleaned to complete the gemstone painting.

[0005] Chinese patent application CN104149536A discloses a gemstone painting and its manufacturing method. The gemstone painting consists of a substrate, a base color layer, a painting layer, and a polishing layer. The base color layer is coated on the surface of the substrate, the painting layer is placed on the base color layer, and the outer surface of the painting layer is a polishing layer. The painting layer is composed of multiple layers of gemstone powder attached to the base color layer and having a color consistent with or similar to the base color layer. This invention uses leftover scraps from jade processing to make jade powder, and adjusts the color according to the natural color of the jade powder. A colorless solution is applied to the base color layer, and the gemstone powders are sprinkled onto the colorless solution according to the principle of having a color consistent with or similar to the base color layer. It is then air-dried naturally for 1-2 hours. The colorless solution consists of the following components by weight: 10-30 parts polyvinyl alcohol, 1-10 parts ethyl α-cyanoacrylate, 1-10 parts silica, 1-10 parts soapberry extract, and 30-60 parts distilled water.

[0006] The invention patent with publication number CN113619319A discloses a color-changing gemstone painting and frame, including a frame body, a light source A, a light source B, a control switch, a back panel, painting paper, a painting layer, an adhesive layer, gemstones, etc. A back panel is provided on the back side of the frame body, a painting paper is provided on the back panel, a painting layer is provided on the painting paper, an adhesive layer is provided on the painting layer, and gemstones are provided on the adhesive layer.

[0007] In conclusion, none of the existing gemstone painting techniques mentioned above have escaped the constraints of traditional adhesive systems, and therefore, they cannot solve the pain points of traditional techniques. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for making enamel gemstone paintings without the need for adhesives to fix gemstones.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A method for producing enamel gemstone paintings includes the following steps:

[0011] S1. A pre-designed groove is machined on one side of the tire sole using CNC machining technology;

[0012] S2. Apply enamel glaze paste to the preset pattern groove on the base, absorb the free water of the enamel glaze paste, and then place gemstones in the preset pattern groove;

[0013] S3. The tire bottom treated in step S2 is then fired.

[0014] S4. Clean and sand the tire bottom that has been treated in step S3.

[0015] The inventors discovered that this invention uses enamel glaze slurry instead of polymer binders. The gemstone particles have a higher density, causing them to sink after placement. Through firing, a dense glaze layer with internal compressive stress is formed, enveloping the base of the gemstone and firmly fixing it in place. After firing, the enamel glaze slurry also exhibits a strong vitreous luster. The vitreous luster on the glaze surface complements the color of the gemstone particles, resulting in outstanding artistic and decorative effects. Furthermore, the enamel glaze layer possesses excellent chemical stability and does not change color over time.

[0016] In a preferred embodiment of the present invention, the enamel glaze slurry in step S2 is prepared by mixing enamel glaze, sodium hydroxycellulose and water.

[0017] Furthermore, the enamel glaze slurry contains 65-70% enamel glaze by mass, and the enamel glaze slurry has a dynamic viscosity of 0.25-0.75 mPa·s.

[0018] Furthermore, the mass percentage of sodium hydroxycellulose in the enamel slurry is 0.1-0.3%.

[0019] Furthermore, the softening point of the enamel glaze does not exceed 350°C, and the coefficient of thermal expansion of the enamel glaze is 8 × 10⁻⁶. -6 ~9×10 -6 / ℃, the particle size of the enamel glaze is 1500-2000 mesh.

[0020] This invention uses enamel glazes with a softening point not exceeding 350℃, thus ensuring that the firing temperature required for enamel gemstone paintings does not exceed 500℃. This invention uses an expansion coefficient of 8×10⁻⁶. -6 ~9×10 -6 Enamel glaze at / ℃ can form a certain pre-compression stress in the glaze layer after firing, which helps to maintain the stability of the glaze layer, prevent the glaze layer from cracking during the firing process, and thus firmly fix the gemstone.

[0021] In this invention, the density of the enamel glaze is less than that of the gemstone, so the gemstone particles will not drift or shift during the firing process, which is beneficial for the stable fixation of the gemstone particles.

[0022] In a preferred embodiment of the present invention, in step S2, if the diameter of the gemstone is greater than 0.5 mm, the method of placement is as follows: the gemstone is placed one by one into the preset pattern groove using tweezers; if the diameter of the gemstone is less than 0.5 mm, the method of placement is as follows: the gemstone is spread into the preset pattern groove using a sieve.

[0023] In a preferred embodiment of the present invention, in step S2, the grain size of the gemstone is 0.1 to 1.5 mm.

[0024] In this invention, the gemstone can be made of materials such as zirconium oxide, spinel, almandine, corundum, andradite, etc. These materials have good thermal stability and are not prone to cracking or discoloration.

[0025] In this invention, the shape of the gemstone can be faceted, cabochon, prism (such as cylinder, prism), cone (such as cone, pyramid), frustum (such as frustum of a cone, frustum of a prism), sphere, etc.

[0026] In a preferred embodiment of the present invention, in step S3, the firing temperature is 430-500°C and the time is 7-20 min.

[0027] The inventors discovered that if the firing temperature exceeds 500℃, it can easily cause the base of the gemstone to oxidize, change color, or deform, and may also cause the gemstone particles to change color, become dull, or break.

[0028] In a preferred embodiment of the present invention, in step S1, the material of the tire sole is titanium.

[0029] The titanium sole has a sufficiently high melting point, excellent resistance to high-temperature oxidation and deformation, preventing problems such as oxidation discoloration and structural deformation during the firing process. Furthermore, the titanium sole exhibits excellent chemical stability in the atmospheric environment, is not prone to corrosion or discoloration, possesses sufficient mechanical strength, and has good coloring properties.

[0030] The present invention does not impose any particular limitations on the shape and size of the tire sole, and those skilled in the art can design the shape and size of the tire sole according to actual needs. For example, the shape of the tire sole can be square, fan-shaped, circular, or elliptical.

[0031] In a preferred embodiment of the present invention, in step S1, the depth of the preset pattern groove is 0.2 to 0.5 mm.

[0032] The present invention does not impose any particular limitation on the shape of the preset pattern groove, and those skilled in the art can design the shape of the tire sole according to actual needs.

[0033] In a preferred embodiment of the present invention, step S4 is followed by:

[0034] S5. After the base of the porcelain body has been treated in step S3, it is subjected to electrolytic degreasing treatment, cleaned and then subjected to anodizing coloring treatment to obtain enamel gemstone painting.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] This invention uses enamel glaze slurry instead of polymer binders. The gemstone particles have a higher density, causing them to sink after placement. Through firing, a dense glaze layer with internal compressive stress is formed, enveloping the base of the gemstone and firmly fixing it in place. After firing, the enamel glaze slurry exhibits a strong vitreous luster. The vitreous luster on the glaze surface complements the color of the gemstone particles, resulting in outstanding artistic and decorative effects. Furthermore, the enamel glaze layer possesses excellent chemical stability and does not change color over time. Detailed Implementation

[0037] To better illustrate the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0038] The method for testing the coefficient of thermal expansion in the following embodiments is as follows: after melting the enamel glaze, a sample with a diameter of 10 mm and a length of 50 mm is made, and the coefficient of thermal expansion of the sample is measured using a coefficient of thermal expansion measuring instrument.

[0039] The deformation test method in the following embodiments is as follows: A ruler with a length not less than the diagonal length of the back of the tire bottom is used. The ruler is placed sideways against the frame edge and diagonal of the back of the tire bottom. A tapered gap gauge is used to detect the maximum height difference (i.e. deformation) of the tire bottom surface in the thickness direction, and the deformation rate is further calculated.

[0040] The softening point test method in the following embodiments is as follows: after melting the enamel glaze, a cube sample with a side length of 5mm is made, and a high-temperature imaging instrument is used to observe the temperature at which the sample begins to have rounded edges during the heating process.

[0041] The enamel glaze used in Example 1 below is 300 lead-free low-temperature glass glaze powder from Hebei Lingshou Mineral Company;

[0042] The enamel glaze used in Example 2 below is 320 lead-free low-temperature glass glaze powder from Hebei Lingshou Mineral Company;

[0043] The enamel glaze used in Example 3 below is 350 lead-free low-temperature glass glaze powder from Hebei Lingshou Mineral Company.

[0044] Example 1

[0045] This embodiment provides a method for producing enamel gemstone paintings, including the following steps:

[0046] S1. The titanium plate is cut and prepared using a laser cutting machine, and the edges are trimmed to obtain the tire base. The tire base has a width of 600mm, a length of 800mm, a thickness of 2.5mm, and a deformation rate of less than 1.4%. The deformation rate is calculated as (deformation of the tire base / width of the tire base) * 100%, and the coefficient of thermal expansion is 9.3 × 10⁻⁶. -6 / ℃.

[0047] S2. Using CNC machining technology, several diamond-shaped grooves distributed in an array are machined on the back of the tire sole. The side length of each diamond groove is 30mm, the depth of the diamond groove is 0.2mm, and the width of the ribs of the diamond groove is 2mm.

[0048] The front of the base is divided into a gemstone decoration area and a texture area;

[0049] Using CNC machining technology, a preset pattern groove is machined in the gemstone decoration area. The preset pattern groove includes a heart-shaped groove, an arrow-shaped groove, and an arrow shaft-shaped groove. The arrow-shaped groove and the arrow shaft-shaped groove are located on both sides of the heart-shaped groove. The depth of the heart-shaped groove is 0.25mm, and the depth of the arrow-shaped groove and the arrow shaft-shaped groove is 0.5mm.

[0050] Using CNC machining technology, textured grooves are machined in the textured area. The textured grooves have several uniformly distributed textured grooves with pyramid-shaped protrusions. The depth of the textured grooves is 0.25mm and the width of the border of the textured grooves is 3mm.

[0051] The tire bottom is degreased using an alkaline electrolytic degreasing solution, and then rinsed clean with water.

[0052] S3. Prepare enamel glaze, wherein the coefficient of thermal expansion of the enamel glaze is 8.7 × 10⁻⁶. -6 The enamel glaze is fired at 430℃, the softening point of the enamel glaze is 300℃, the density of the enamel glaze is 57% of the density of red synthetic cubic zirconia, and the density of the enamel glaze is 37.5% of the density of purple garnet.

[0053] The enamel glaze was ground to a particle size of 140 mesh using a high-energy ball mill, an agate grinding jar, and agate grinding balls. The enamel glaze was then ground to a particle size of 1800 mesh using the same high-energy ball mill, an agate grinding jar, and agate grinding balls. The ground glaze was then washed with deionized water to remove any fine powder.

[0054] S4. Mix enamel glaze with a particle size of 140 mesh and water at a mass ratio of 3.2:1 to prepare the first enamel glaze slurry;

[0055] After the base is processed in step S2, it is fixed on a glazing frame that can be rotated freely. First, the first enamel glaze slurry is filled into the diamond-shaped groove of the base with a glazing spatula, and then the moisture is absorbed with absorbent paper. Then, the base is removed and placed on the firing frame with the diamond-shaped groove facing upwards. The firing frame has five support points. When placing the base, the part filled with slurry should be avoided from the support points. The firing frame with the base is lifted with a fork and sent into the firing furnace that has been preheated to 430°C. It is fired for 7 minutes to melt all the enamel glaze. After the firing frame with the base is removed, it is left to cool to room temperature.

[0056] After the cooled base is turned over, the first enamel glaze is filled into the grooves of the texture, and the moisture is absorbed with absorbent paper. Then, the base is removed and placed on the firing rack with the diamond-shaped grooves facing upwards. The firing rack has five support points. When placing the base, the part filled with glaze should be kept away from the support points. The firing rack with the base is lifted with a fork and sent into the firing furnace which has been preheated to 430°C. It is fired for 7 minutes to melt all the enamel glaze. After the firing rack with the base is removed, it is left to cool to room temperature.

[0057] S5. Prepare a second enamel slurry by mixing enamel glaze with a particle size of 1800 mesh, sodium hydroxycellulose and water. The second enamel slurry contains 65% enamel glaze by mass and 0.2% sodium hydroxycellulose by mass. The dynamic viscosity of the second enamel slurry is 0.5 mPa·s. Fill the heart-shaped groove, arrow-shaped groove and arrow shaft-shaped groove with the second enamel slurry.

[0058] Then, red cubic zirconia particles are placed one by one in the heart-shaped groove with tweezers, and the free water of the second enamel glaze is absorbed with absorbent paper; purple garnet particles with a particle size of 0.8-1.0 mm are placed in the arrow-shaped groove and the arrow shaft-shaped groove, with the purple garnet particles protruding from the arrow-shaped groove and the arrow shaft-shaped groove, and the free water of the second enamel glaze is absorbed with absorbent paper.

[0059] S6. Transfer the base material processed in step S5 to the firing rack, and then put it into the firing furnace preheated to 480°C. Keep it at the temperature for 15 minutes to melt all the enamel glaze. The zirconium oxide particles and garnet particles will sink due to their high density. After removing the firing rack with the base material, let it cool to room temperature so that the bottom of the particles is covered by the glaze and fixed.

[0060] S7. Use a diamond tool to clean the glaze spots on the base of the body after step S6, remove the glaze spots scattered outside the grooves, and then use 600# sandpaper to sand the surface of the base.

[0061] S8. After the base of the porcelain body is treated in step S7, it is subjected to electrolytic degreasing treatment. After being cleaned with deionized water, it is placed in an electrolytic cell for anodizing coloring treatment, so that the parts of the base of the porcelain body that are not covered by enamel glaze appear gray, thus obtaining enamel gemstone painting.

[0062] S9. Combine the enamel gem painting and the device frame obtained in step S8 to obtain the finished enamel gem painting.

[0063] Example 2

[0064] This embodiment provides a method for producing enamel gemstone paintings, including the following steps:

[0065] S1. The titanium plate is cut and prepared using a laser cutting machine, and the edges are trimmed to obtain the tire base. The tire base is fan-shaped, with an inner diameter of 600mm, an outer diameter of 1200mm, a fan angle of 45°, and a deformation rate of less than 1.5%. The deformation rate is calculated as: (deformation of the tire base / inner diameter of the fan-shaped base) * 100%. The coefficient of thermal expansion is 9.3 × 10⁻⁶. -6 / ℃.

[0066] S2. Using CNC machining technology, several fan-shaped grooves distributed in an array are machined on the back of the tire sole. The depth of the fan-shaped grooves is 0.25mm and the width of the ribs is 2mm.

[0067] The front of the base is divided into a gemstone decoration area and a texture area;

[0068] Using CNC machining technology, pre-designed pattern grooves are machined in the gemstone decoration area. The pre-designed pattern grooves include cloud-shaped grooves, sea-shaped grooves, and crescent-shaped grooves; the depth of the pre-designed pattern grooves is 0.25mm.

[0069] Using CNC machining technology, textured grooves with regular raised text are machined in the textured area. The depth of the textured grooves is 0.25mm, and the width of the border of the textured grooves is 5mm.

[0070] S3. Prepare the enamel glaze, wherein the coefficient of thermal expansion of the enamel glaze is 8×10⁻⁶. -6 The firing temperature is 460℃, and the softening point of the enamel glaze is 320℃.

[0071] The enamel glaze was ground to a particle size of 150 mesh using a high-energy ball mill, an agate grinding jar, and agate grinding balls. The enamel glaze was then ground to a particle size of 2000 mesh using the same high-energy ball mill, an agate grinding jar, and agate grinding balls. The ground glaze was then washed with deionized water to remove any fine powder.

[0072] S4. Mix 150-mesh enamel glaze and water in a 3:1 mass ratio to prepare the first enamel glaze slurry. Fix the base of the body treated in step S2 onto a glaze-filling frame that can be freely rotated. First, fill the fan-shaped groove of the base with the first enamel glaze slurry using a glaze-filling spatula, and then absorb the moisture with absorbent paper. Then, remove the base and place it on a firing frame with five support points. When placing the base, the part of the base filled with slurry should avoid the support points. Use a fork to lift the firing frame with the base and send it into a firing furnace preheated to 460°C. Keep it at this temperature for 10 minutes to melt all the enamel glaze. After removing the firing frame with the base, let it cool to room temperature.

[0073] After the cooled base is turned over, the first enamel glaze is filled into the grooves of the texture, and the moisture is absorbed with absorbent paper. Then, the base is removed and placed on a firing rack with the diamond-shaped grooves facing upwards. The firing rack has five support points. When placing the base, the part filled with glaze should be kept away from the support points. The firing rack with the base is lifted with a fork and sent into a firing furnace preheated to 460°C. The furnace is held at this temperature for 10 minutes to melt the enamel glaze completely. After removing the firing rack with the base, it is left to cool to room temperature.

[0074] S5. Prepare a second enamel slurry by mixing enamel glaze with a particle size of 2000 mesh, sodium hydroxycellulose and water. The second enamel slurry contains 67% enamel glaze by mass, 0.3% sodium hydroxycellulose by mass, and has a dynamic viscosity of 0.75 mPa·s. Apply the second enamel slurry to the groove of the preset pattern.

[0075] Then, use tweezers to place gemstone particles one by one in the cloud-shaped and sea-shaped grooves, and use absorbent paper to absorb the free water of the second enamel glaze slurry; prepare a filler template with a hollow area, the hollow area being adapted to the crescent-shaped groove, the hollow area being equipped with a template sieve, place the filler template above the base with the hollow area facing the crescent-shaped groove, and sprinkle light beige tourmaline fragments with a particle size of 0.1-0.2mm into the crescent-shaped groove, and use absorbent paper to absorb the free water of the second enamel glaze slurry.

[0076] S6. Transfer the base material processed in step S5 to the firing rack, and then put it into the firing furnace preheated to 460°C. Keep it at the temperature for 20 minutes to allow the enamel glaze to melt completely. The gemstone material will sink due to its high density. After removing the firing rack containing the base material, let it cool to room temperature so that the bottom of the particles is covered by the glaze and fixed.

[0077] S7. Use a diamond tool to clean the glaze spots on the base of the body after step S6, remove the glaze spots scattered outside the grooves, and then use 400# sandpaper to sand the surface of the base.

[0078] S8. After the base of the porcelain body has been treated in step S7, it is subjected to electrolytic degreasing treatment. After being cleaned with deionized water, it is placed in an electrolytic cell for anodizing coloring treatment, so that the parts of the base of the porcelain body that are not covered by enamel glaze turn gold, thus obtaining enamel gemstone painting.

[0079] S9. Combine the enamel gem painting and the device frame obtained in step S8 to obtain the finished enamel gem painting.

[0080] Example 3

[0081] This embodiment provides a method for producing enamel gemstone paintings, including the following steps:

[0082] S1. The titanium plate is cut and prepared using a laser cutting machine, and the edges are trimmed to obtain the tire base. The tire base has a width of 400mm, a length of 400mm, a thickness of 2.1mm, and a deformation rate of less than 1.2%. The deformation rate is calculated as (deformation of the tire base / width of the tire base) * 100%, and the coefficient of thermal expansion is 9.3 × 10⁻⁶. -6 / ℃.

[0083] S2. Using CNC machining technology, several square grooves arranged in an array are machined on the back of the tire sole. The depth of the square grooves is 0.21mm and the width of the ribs is 1mm.

[0084] The front of the base is divided into a gemstone decoration area and a texture area;

[0085] Using CNC machining technology, a pre-designed pattern groove is machined in the gemstone decoration area. The pre-designed pattern groove includes a grassland pattern groove and a horse herding pattern groove. The depth of the pre-designed pattern groove is 0.3mm.

[0086] Textured grooves are machined in the textured area. The depth of the textured grooves is 0.25 mm. The textured grooves have uniformly distributed hemispherical protrusions. The border width of the textured grooves is 2 mm.

[0087] The tire bottom is degreased using an alkaline electrolytic degreasing solution, and then rinsed clean with water.

[0088] S3. Prepare the enamel glaze, wherein the coefficient of thermal expansion of the enamel glaze is 9×10⁻⁶. -6 The firing temperature of the enamel glaze is 500℃, and its softening point is 350℃.

[0089] The enamel glaze was ground to a particle size of 150 mesh using a high-energy ball mill, an agate grinding jar, and agate grinding balls. The enamel glaze was then ground to a particle size of 2000 mesh using the same high-energy ball mill, an agate grinding jar, and agate grinding balls. The ground glaze was then washed with deionized water to remove any fine powder.

[0090] S4. Mix enamel glaze with a particle size of 150 mesh and water at a mass ratio of 2.9:1 to prepare the first enamel glaze slurry;

[0091] After the base is processed in step S2, it is fixed on a glazing frame that can be rotated freely. First, the first enamel glaze is filled into the square groove and textured groove of the base with a glazing spatula, and the moisture is absorbed with absorbent paper. Grass green glaze is applied to the grassland pattern groove. Then, the base is removed and placed on a firing frame with five support points. When placing the base, the part filled with glaze should be avoided from the support points. The firing frame with the base is lifted with a fork and sent into a firing furnace preheated to 500°C. The furnace is held for 5 minutes to melt all the enamel glaze. After removing the firing frame with the base, it is left to cool to room temperature.

[0092] After the cooled base is turned over, the first enamel glaze is filled into the grooves of the texture, and the moisture is absorbed with absorbent paper. Then, the base is removed and placed on a firing rack with the diamond-shaped grooves facing upwards. The firing rack has five support points. When placing the base, the part filled with glaze should be kept away from the support points. The firing rack with the base is lifted with a fork and sent into a firing furnace preheated to 500°C. It is fired for 5 minutes to melt all the enamel glaze. After removing the firing rack with the base, it is left to cool to room temperature.

[0093] S5. Prepare a second enamel slurry by mixing enamel glaze with a particle size of 2000 mesh, sodium hydroxycellulose and water. The second enamel slurry contains 66% enamel glaze by mass and 0.1% sodium hydroxycellulose by mass. The dynamic viscosity of the second enamel slurry is 0.30 mPa·s. Apply the second enamel slurry to the groove of the horse herding pattern.

[0094] Then, spinel particles with a diameter of 0.5 to 0.6 mm are placed one by one in the groove of the horse herding pattern with tweezers. The spinel particles can be at least one of chestnut spinel, jujube spinel, black spinel, and brown spinel. The free water of the second enamel glaze is absorbed with absorbent paper.

[0095] S6. Transfer the base material processed in step S5 to the firing rack, and then put it into the firing furnace preheated to 500°C. Keep it at the temperature for 7 minutes to allow the enamel glaze to melt completely. The gemstone material will sink due to its high density. After removing the firing rack containing the base material, let it cool to room temperature so that the bottom of the particles is covered by the glaze and fixed.

[0096] S7. Use a diamond tool to clean the glaze spots on the base of the body after step S6, remove the glaze spots scattered outside the grooves, and then use 800# sandpaper to sand the surface of the base.

[0097] S8. After the base of the porcelain body is treated in step S7, it is subjected to electrolytic degreasing treatment. After being cleaned with deionized water, it is placed in an electrolytic cell for anodizing coloring treatment, so that the parts of the base of the porcelain body that are not covered by enamel glaze turn beige, thus obtaining enamel gemstone painting.

[0098] S9. Combine the enamel gem painting and the device frame obtained in step S8 to obtain the finished enamel gem painting.

[0099] Example of effect 1

[0100] The enamel gemstone paintings prepared in the above embodiments were subjected to the following tests. The borders were removed before the tests. The test methods are as follows:

[0101] (1) Select an ultrasonic cleaner with a frequency of 28KHz and add deionized water.

[0102] (2) Heat the deionized water to 45°C.

[0103] (3) Use copper wire to hang the enamel gemstone painting and place it vertically into the cleaning tank so that the enamel gemstone painting is completely submerged in water.

[0104] (4) Turn on the ultrasonic cleaner and clean for 60 minutes.

[0105] (5) Take out the enamel gemstone painting, dry it with cold air, and check the bonding between the gemstone particles and the enamel layer.

[0106] Test results show that the enamel gemstone paintings prepared in Examples 1-3, after rigorous testing with strong ultrasonic vibration, did not show any loosening or falling of the gemstones, and the gemstones were firmly bonded to the enamel layer.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A method for producing enamel gemstone paintings, characterized in that, Includes the following steps: S1. A pre-designed groove is machined on one side of the tire sole using CNC machining technology; S2. Apply enamel glaze paste to the preset pattern groove on the base, absorb the free water of the enamel glaze paste, and then place gemstones in the preset pattern groove; In step S2, the enamel glaze slurry is prepared by mixing enamel glaze, sodium hydroxycellulose, and water. The softening point of the enamel glaze does not exceed 350°C, and the coefficient of thermal expansion of the enamel glaze is 8 × 10⁻⁶. -6 ~9×10 -6 / ℃; S3. The tire bottom treated in step S2 is then fired. In step S3, the firing temperature is 430~500℃ and the time is 7~20min. The firing process forms a dense glaze layer with internal compressive stress, which then covers the bottom of the gemstone. S4. Clean and sand the tire bottom that has been treated in step S3.

2. The method for producing enamel gemstone paintings as described in claim 1, characterized in that, The enamel glaze slurry contains 65-70% enamel glaze by mass, and the dynamic viscosity of the enamel glaze slurry is 0.25~0.75 mPa·s.

3. The method for producing enamel gemstone paintings as described in claim 1, characterized in that, The enamel glaze has a particle size of 1500~2000 mesh.

4. The method for producing enamel gemstone paintings as described in claim 1, characterized in that, In step S2, if the diameter of the gemstone is greater than 0.5 mm, the placement method is as follows: use tweezers to place the gemstone one by one into the preset pattern groove; if the diameter of the gemstone is less than 0.5 mm, the placement method is as follows: use a sieve to spread the gemstone into the preset pattern groove.

5. The method for producing an enamel gemstone painting as described in claim 1, characterized in that, In step S2, the size of the gemstone is 0.1~1.5mm.

6. The method for producing enamel gemstone paintings as described in claim 1, characterized in that, In step S1, the material of the tire sole is titanium.

7. The method for producing enamel gemstone paintings as described in claim 1, characterized in that, In step S1, the depth of the preset pattern groove is 0.2~0.5mm.

8. The method for producing an enamel gemstone painting as described in claim 1, characterized in that, Step S4 is followed by: S5. After the base of the porcelain body has been treated in step S3, it is subjected to electrolytic degreasing treatment, cleaned and then subjected to anodizing coloring treatment to obtain enamel gemstone painting.