Manufacturing method of AG etched glass with coral fleece effect
By using a special formula of coral velvet effect special etching liquid on the glass surface and optimizing the process flow, the problem of difficulty in forming coral velvet effect in the existing technology is solved, and the delicate, soft and three-dimensional coral velvet effect is achieved, which improves the beauty and production efficiency of the product.
Patent Information
- Application Number
- CN202510259374.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-04-29
AI Technical Summary
The existing etching glass process is difficult to form a delicate, soft and three-dimensional effect similar to coral velvet on the glass surface, and it is impossible to achieve high-quality production of coral velvet effect AG etching glass.
Special formula for coral velvet effect is adopted and optimized process flow, including glass surface pretreatment, eight-character ring swing etching treatment, strict control of etching temperature, time and swing frequency, combined with robotic arm automation operation and pure water three-level countercurrent rinsing process, it forms a delicate, soft and three-dimensional coral velvet effect.
It realizes the effect of forming a delicate, soft and three-dimensional coral velvet on the glass surface, reduces surface tension, adjusts the viscosity of the medicine liquid, forms a uniform micron-level concave and convex structure, improves haze and aesthetic effects, meets the aesthetic needs of high-end decoration and electronic products, and improves the mass production pass rate.
Smart Images
Figure CN119898966A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of etched glass, and in particular relates to a method for manufacturing coral fleece effect AG etched glass. Background Art
[0002] The traditional etching glass process is usually used to create frosted, textured or patterned effects on the glass surface, and is widely used in mobile phone back panel glass, touch display screens, decorative glass, architectural glass and daily furniture glass.
[0003] The existing etching process makes it difficult to form a delicate, soft and three-dimensional effect similar to coral fleece on the glass surface. Coral fleece effect AG etched glass is very popular in the market due to its unique tactile texture and visual effect, but there is currently no mature process to achieve this effect on the glass surface.
[0004] In order to solve the above problems, the present invention proposes a method for manufacturing coral fleece effect AG etched glass, which forms delicate, soft and three-dimensional coral fleece effect etched glass on the glass surface through a special etching process and etching material ratio. Summary of the invention
[0005] The purpose of the present invention is to provide a method for manufacturing coral fleece effect AG etched glass in order to solve the above-mentioned problem.
[0006] The technical solution adopted by the present invention is as follows: a method for manufacturing coral fleece effect AG etched glass, the method comprising the following steps:
[0007] S1: First, prepare a special AG etching solution for coral fleece effect. The special AG etching solution includes: 20% to 40% ammonium bifluoride, 5% to 10% potassium fluoride, 3-8 sodium fluorosilicate, 10% to 25% nitric acid, 5% to 15% phosphoric acid, 2% to 6% lithium tartrate, 3% to 8% copper sulfate, 2% to 5% potassium dihydrogen phosphate, 3% to 8% iron nitrate, 2% to 5% zinc chloride, 0.2% to 0.5% lauroyl glutamic acid, 5% to 10% soy protein glue, and 15% to 30% water;
[0008] S2: Stir thoroughly until the solution is in a uniform supersaturated solution state, that is, a special etching solution for coral fleece effect is obtained, and stand and mature at room temperature for 72 hours;
[0009] S3: Pre-treat the glass surface: Laminate the back of the glass that does not need to be etched for protection, clean and pre-treat the glass surface that needs to be etched, remove surface stains and grease, and improve the adhesion of the etching solution;
[0010] S4: Etching treatment: When the glass surface is in a wet state, a special etching solution for coral fleece effect is put into the glass surface for etching treatment in the shape of a figure eight ring swing;
[0011] S5: Control the temperature of the etching solution to 10-20°C, the etching time to 3-5 minutes, and the swing frequency to 30-60 cycles / minute;
[0012] S6: After the etching time requirement is reached, the etching solution is promptly removed from the etching solution, and then the residual etching solution is removed by washing with pure water;
[0013] S7: The cleaned product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
[0014] In a preferred embodiment, in step S1, solid and liquid components are added in sequence during preparation to avoid violent heat release, and are mixed in a corrosion-resistant container in a ventilated environment to ensure safety.
[0015] In a preferred embodiment, in step S2, the prepared etching solution needs to be fully mixed by mechanical stirring, and the stirring speed is controlled at 200-300 rpm for 30 to 45 minutes, until the solution is in a uniform supersaturated state without precipitation or stratification. After stirring, the solution needs to be transferred to a sealed container and left to mature for 72 hours at room temperature (20-25°C). During the maturation process, the chemical substances in the etching solution further react stably to form a stable complex, thereby improving the consistency and reproducibility of the etching effect. During the maturation period, light and temperature fluctuations should be avoided to prevent the performance of the solution from deteriorating.
[0016] In a preferred embodiment, in step S3, the pretreatment needs to firstly coat the non-etched surface of the glass with a protective film, using an acid-resistant polyethylene film or Teflon tape to ensure complete coverage and no bubbles. The etched surface needs to be ultrasonically cleaned with an alkaline detergent, deionized water and anhydrous ethanol for 10 minutes each to thoroughly remove grease, dust and organic pollutants. After cleaning, the surface is dried with nitrogen and plasma activated in a dust-free environment for 2 to 3 minutes at a power of 50-100W to enhance the hydrophilicity of the glass surface and improve the adhesion of the etching solution. After the pretreatment is completed, the etching process must be entered within 1 hour to avoid secondary contamination.
[0017] In a preferred embodiment, in step S4, the pretreated glass is immersed in the etching solution to keep the glass surface completely wetted and free of bubbles. The glass is clamped by an automated mechanical arm and swung and etched in an "eight-shaped" trajectory, with the swing amplitude controlled at 20-30 cm to ensure that the liquid evenly contacts the surface. The liquid level needs to be monitored in real time during the swinging process to avoid local over-etching. Operating in a wet state can reduce the reaction interfacial tension and promote the formation of microscopic etching pits, thereby enhancing the three-dimensional sense of the coral fleece effect.
[0018] In a preferred embodiment, in step S5, the temperature of the etching solution needs to be maintained at 10-20°C by a constant temperature water bath system. Too high a temperature will lead to too fast a reaction rate and excessive surface roughness; too low a temperature may cause insufficient etching. The etching time is precisely controlled at 3 to 5 minutes, and the glass is automatically taken out by the timer-linked robotic arm. The swing frequency is set to 30-60 revolutions / minute, and a servo motor is used to drive it. Too high a frequency can easily cause the liquid to splash, and too low a frequency can affect the etching uniformity. The process parameters need to be dynamically adjusted according to the glass thickness and target roughness (1.1-1.2μm).
[0019] In a preferred embodiment, in step S6, the glass is immediately transferred to a pure water tank after etching is completed, and a three-stage countercurrent rinsing process is adopted. The first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50℃ pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid. After cleaning, the water quality is monitored by a conductivity detector, and the conductivity must be lower than 5μS / cm, indicating that the cleaning is up to standard. After etching is completed, the glass is immediately transferred to a pure water tank, and a three-stage countercurrent rinsing process is adopted. The first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50℃ pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid. After cleaning, the water quality is monitored by a conductivity detector, and the conductivity must be lower than 5μS / cm, indicating that the cleaning is up to standard.
[0020] In a preferred embodiment, in step S7, the cleaned glass is placed in a Class 100 dust-free environment and air-dried by a vertical wind knife system at a wind speed of 8-10 m / s, a temperature of 25-30°C, a humidity of ≤40%, and a time of 3 to 5 minutes. After air-drying, natural drying (time ≤2 hours) or infrared drying (temperature 60-80°C, time 10 minutes) can be selected. After drying, an optical microscope is used to spot-check the surface texture to ensure that there are no scratches, bubbles or contamination, and finally a coral fleece effect AG etched glass with a gloss of 58% ± 0.5%, a transmittance of 70% ± 1%, and a haze of 31.5% to 32% is obtained.
[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0022] 1. In the present invention, a delicate, soft and three-dimensional coral fleece effect can be formed on the glass surface through a specially formulated etching solution and process optimization. The components such as ammonium bifluoride and nitric acid in the etching solution work synergistically to accurately control the etching depth and texture distribution of the glass surface layer. Combined with the surfactant lauroyl glutamic acid and the thickener soy protein glue, the surface tension is significantly reduced and the viscosity of the liquid is adjusted, and finally a uniform micron-level concave-convex structure is formed. This structure not only gives the glass a smooth touch similar to coral fleece, but also reduces the reflectivity through light scattering, increases the haze to 31.6% to 32%, and achieves a soft matte texture to meet the aesthetic needs of high-end decoration and electronic products.
[0023] 2. In the present invention, the consistency and repeatability of the coral fleece effect are ensured by strictly controlling the etching temperature, time and oscillation frequency. The constant low temperature environment suppresses the violent fluctuation of the etching reaction and avoids excessive corrosion or uneven etching; the figure-eight ring oscillation technology enables the liquid to dynamically cover the glass surface, combined with the automated operation of the robotic arm, to reduce the error caused by manual intervention. In the embodiment, an etching temperature of 15°C and an oscillation frequency of 50 laps / minute are used, and a uniform texture with a roughness of 1.1μm can be achieved in only 3 minutes, which shortens the working hours by more than 20% compared to the traditional etching process. At the same time, the light transmittance of the finished product is stabilized at about 70%, significantly improving the mass production qualification rate.
[0024] 3. In the present invention, natural thickeners such as soybean protein glue added to the etching solution not only optimize the leveling of the liquid, but also greatly reduce the emission of volatile harmful substances such as ammonium bifluoride, thereby reducing pollution to the working environment. At the same time, lauroyl glutamic acid, as a biodegradable surfactant, can neutralize part of the acidic gas emissions, and with the closed etching tank design, the operation process meets industrial safety standards. The three-stage pure water countercurrent rinsing process is used in the cleaning stage to effectively remove residual chemicals and reduce the burden of wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the process principle of the method of the present invention;
[0026] Figure 2 This is an electron microscope image of the glass after etching in the present invention. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] Reference Figure 1-2 ,
[0029] A method for manufacturing coral fleece effect AG etched glass, the method comprising the following steps:
[0030] S1: First, prepare a special AG etching solution for coral fleece effect. The special AG etching solution includes: 20% to 40% ammonium bifluoride, 5% to 10% potassium fluoride, 3-8 sodium fluorosilicate, 10% to 25% nitric acid, 5% to 15% phosphoric acid, 2% to 6% lithium tartrate, 3% to 8% copper sulfate, 2% to 5% potassium dihydrogen phosphate, 3% to 8% iron nitrate, 2% to 5% zinc chloride, 0.2% to 0.5% lauroyl glutamic acid, 5% to 10% soy protein glue, and 15% to 30% water;
[0031] S2: Stir thoroughly until the solution is in a uniform supersaturated solution state, that is, a special etching solution for coral fleece effect is obtained, and stand and mature at room temperature for 72 hours;
[0032] S3: Pre-treat the glass surface: Laminate the back of the glass that does not need to be etched for protection, clean and pre-treat the glass surface that needs to be etched, remove surface stains and grease, and improve the adhesion of the etching solution;
[0033] S4: Etching treatment: Put the glass surface into a special etching solution for coral fleece effect in a wet state and perform figure-eight ring swing etching treatment;
[0034] S5: Control the temperature of the etching solution to 10-20°C, the etching time to 3-5 minutes, and the swing frequency to 30-60 cycles / minute;
[0035] S6: After the etching time requirement is reached, the etching solution is promptly removed from the etching solution, and then the residual etching solution is removed by washing with pure water;
[0036] S7: The cleaned product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
[0037] In step S1, solid and liquid components need to be added in order during preparation to avoid violent heat release, and mixing should be performed in a corrosion-resistant container in a ventilated environment to ensure safety.
[0038] In step S2, the prepared etching solution needs to be fully mixed by mechanical stirring, and the stirring speed is controlled at 200-300 rpm for 30 to 45 minutes, until the solution is in a uniform supersaturated state without precipitation or stratification. After stirring, the solution needs to be transferred to a sealed container and left to mature for 72 hours at room temperature (20-25°C). During the maturation process, the chemical substances in the etching solution further react and stabilize to form a stable complex, thereby improving the consistency and reproducibility of the etching effect. During the maturation period, light and temperature fluctuations should be avoided to prevent the performance of the solution from deteriorating.
[0039] In step S3, the pretreatment needs to first coat the non-etched surface of the glass with a protective film, using acid-resistant polyethylene film or Teflon tape to ensure complete coverage and no bubbles. The etched surface needs to be ultrasonically cleaned with alkaline detergent, deionized water and anhydrous ethanol for 10 minutes each to thoroughly remove grease, dust and organic pollutants. After cleaning, use nitrogen to blow dry the surface, and perform plasma activation treatment in a dust-free environment for 2 to 3 minutes at a power of 50-100W to enhance the hydrophilicity of the glass surface and improve the adhesion of the etching solution. After the pretreatment is completed, the etching process must be entered within 1 hour to avoid secondary contamination.
[0040] In step S4, the pretreated glass is immersed in the etching solution to keep the glass surface completely wetted and free of bubbles. The glass is clamped by an automated robotic arm and swung and etched in an "eight-shaped" trajectory. The swing amplitude is controlled at 20-30 cm to ensure that the liquid contacts the surface evenly. The liquid level needs to be monitored in real time during the swinging process to avoid local over-etching. Operating in a wet state can reduce the reaction interfacial tension and promote the formation of microscopic etching pits, thereby enhancing the three-dimensional sense of the coral fleece effect.
[0041] In step S5, the temperature of the etching solution needs to be maintained at 10-20°C by a constant temperature water bath system. Too high a temperature will lead to too fast a reaction rate and excessive surface roughness; too low a temperature may cause insufficient etching. The etching time is precisely controlled at 3 to 5 minutes, and the glass is automatically removed by the timer-linked robotic arm. The swing frequency is set to 30-60 revolutions / minute and is driven by a servo motor. Too high a frequency can easily cause the solution to splash, and too low a frequency can affect the uniformity of etching. The process parameters need to be dynamically adjusted according to the glass thickness and target roughness (1.1-1.2μm).
[0042] In step S6, the glass is immediately transferred to a pure water tank after etching is completed, and a three-stage countercurrent rinsing process is adopted. The first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50℃ pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid. After cleaning, the water quality is monitored by a conductivity detector. The conductivity must be lower than 5μS / cm, indicating that the cleaning is up to standard. After etching is completed, the glass is immediately transferred to a pure water tank, and a three-stage countercurrent rinsing process is adopted. The first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50℃ pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid. After cleaning, the water quality is monitored by a conductivity detector. The conductivity must be lower than 5μS / cm, indicating that the cleaning is up to standard.
[0043] In step S7, the cleaned glass is placed in a Class 100 dust-free environment and air-dried by a vertical wind knife system at a wind speed of 8-10 m / s, a temperature of 25-30°C, a humidity of ≤40%, and a time of 3 to 5 minutes. After air-drying, you can choose to dry naturally (time ≤2 hours) or infrared drying (temperature 60-80°C, time 10 minutes). After drying, an optical microscope is required to spot-check the surface texture to ensure that there are no scratches, bubbles or contamination, and finally obtain a coral fleece effect AG etched glass with a gloss of 58% ± 0.5%, a transmittance of 70% ± 1%, and a haze of 31.5% to 32%.
[0044] Embodiment 1:
[0045] A method for manufacturing coral fleece effect AG etched glass, the method comprising the following steps:
[0046] S1. Preparation of AG etching solution for coral fleece effect: prepare a special etching solution for coral fleece effect, the formula composition of which is as follows (wt%): 20.5% ammonium bifluoride, 5% potassium fluoride, 3% sodium fluorosilicate, 18% nitric acid, 10% phosphoric acid, 2.5% lithium tartrate, 3.5% copper sulfate, 3% potassium dihydrogen phosphate, 3.5% ferric nitrate, 2.5% zinc chloride, 0.2% lauroyl glutamate, 6% soy protein glue, 22.3% water, and stir well until the solution presents a uniform supersaturated solution state, that is, the special etching solution for coral fleece effect is obtained; and stand and mature at room temperature for 72 hours.
[0047] S2. Glass surface pretreatment: The back of the glass that does not need to be etched is coated for protection, and the glass surface that needs to be etched is cleaned and pretreated to remove surface stains and grease and improve the adhesion of the etching solution.
[0048] S3, etching treatment: Then put the glass surface in a wet state into a special etching solution for coral fleece effect to perform figure eight ring swing etching treatment.
[0049] S4, control the temperature of the etching solution to 15°C, control the etching time to 3 minutes, and control the swing frequency to 50 cycles / minute.
[0050] S5. After the etching time requirement is reached, take it out from the etching solution in time, and then wash it with pure water to remove the residual etching solution.
[0051] S6. The cleaned product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
[0052] Embodiment 2:
[0053] A method for manufacturing coral fleece effect AG etched glass, the method comprising the following steps:
[0054] S1. Preparation of AG etching solution for coral fleece effect: prepare a special etching solution for coral fleece effect, the formula composition of which is as follows (wt%): 18% ammonium bifluoride, 8% potassium fluoride, 3.5% sodium fluorosilicate, 20% nitric acid, 8% phosphoric acid, 2% lithium tartrate, 4% copper sulfate, 3% potassium dihydrogen phosphate, 3.5% ferric nitrate, 3% zinc chloride, 0.2% lauroyl glutamate, 6% soy protein glue, 20.8% water, and stir well until the solution presents a uniform supersaturated solution state, that is, the special etching solution for coral fleece effect is obtained; and stand and mature at room temperature for 72 hours.
[0055] S2. Glass surface pretreatment: The back of the glass that does not need to be etched is coated for protection, and the glass surface that needs to be etched is cleaned and pretreated to remove surface stains and grease and improve the adhesion of the etching solution.
[0056] S3, etching treatment: Then put the glass surface in a wet state into a special etching solution for coral fleece effect to perform figure eight ring swing etching treatment.
[0057] S4. Control the temperature of the etching solution to 18° C., the etching time to 3.5 minutes, and the swing frequency to 45 cycles / minute.
[0058] S5. After the etching time requirement is reached, take it out from the etching solution in time, and then wash it with pure water to remove the residual etching solution.
[0059] S6. The cleaned product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
[0060] Embodiment three:
[0061] A method for manufacturing coral fleece effect AG etched glass, the method comprising the following steps:
[0062] S1. Preparation of AG etching solution for coral fleece effect: prepare a special etching solution for coral fleece effect, the formula composition of which is as follows (wt%): 16% ammonium bifluoride, 10% potassium fluoride, 3% sodium fluorosilicate, 22% nitric acid, 6% phosphoric acid, 2.5% lithium tartrate, 3.5% copper sulfate, 3.5% potassium dihydrogen phosphate, 3% ferric nitrate, 2.5% zinc chloride, 0.3% lauroyl glutamate, 6.5% soy protein glue, 21.2% water, and stir well until the solution presents a uniform supersaturated solution state, that is, the special etching solution for coral fleece effect is obtained; and stand and mature at room temperature for 72 hours.
[0063] S2. Glass surface pretreatment: The back of the glass that does not need to be etched is coated for protection, and the glass surface that needs to be etched is cleaned and pretreated to remove surface stains and grease and improve the adhesion of the etching solution.
[0064] S3, etching treatment: Then put the glass surface in a wet state into a special etching solution for coral fleece effect to perform figure eight ring swing etching treatment.
[0065] S4. Control the temperature of the etching solution to 18° C., the etching time to 3.5 minutes, and the swing frequency to 45 cycles / minute.
[0066] S5. After the etching time requirement is reached, take it out from the etching solution in time, and then wash it with pure water to remove the residual etching solution.
[0067] 6. After cleaning, the product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
[0068] The comparison of performance technical parameters before and after etching is shown in the following table:
[0069]
[0070] It can be seen from the above embodiments that:
[0071] In the present invention, a delicate, soft and three-dimensional coral fleece effect can be formed on the glass surface through a specially formulated etching solution and process optimization. The components such as ammonium bifluoride and nitric acid in the etching solution work synergistically to accurately control the etching depth and texture distribution of the glass surface layer. Combined with the surfactant lauroyl glutamic acid and the thickener soy protein glue, the surface tension is significantly reduced and the viscosity of the liquid is adjusted, and finally a uniform micron-level concave-convex structure is formed. This structure not only gives the glass a smooth touch similar to coral fleece, but also reduces the reflectivity through light scattering, increases the haze to 31.6% to 32%, and achieves a soft matte texture to meet the aesthetic needs of high-end decoration and electronic products.
[0072] In the present invention, the consistency and repeatability of the coral fleece effect are ensured by strictly controlling the etching temperature, time and oscillation frequency. The constant low temperature environment suppresses the violent fluctuation of the etching reaction, avoiding excessive corrosion or uneven etching; the figure-eight ring oscillation technology enables the liquid to dynamically cover the glass surface, combined with the automated operation of the robotic arm, to reduce the error caused by manual intervention. In the embodiment, an etching temperature of 15°C and an oscillation frequency of 50 laps / minute are used, and a uniform texture with a roughness of 1.1μm can be achieved in only 3 minutes, which shortens the working hours by more than 20% compared to the traditional etching process. At the same time, the light transmittance of the finished product is stabilized at about 70%, significantly improving the mass production qualification rate.
[0073] In the present invention, natural thickeners such as soybean protein glue added to the etching solution not only optimize the leveling of the liquid, but also greatly reduce the emission of volatile harmful substances such as ammonium bifluoride, thereby reducing pollution to the working environment. At the same time, lauroyl glutamic acid, as a biodegradable surfactant, can neutralize part of the acidic gas emissions, and with the closed etching tank design, the operation process meets industrial safety standards. The three-stage pure water countercurrent rinsing process is used in the cleaning stage to effectively remove residual chemicals and reduce the burden of wastewater treatment.
[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for making coral fleece effect AG etched glass, characterized in that: The method comprises the following steps: S1: First, prepare a special AG etching solution for coral fleece effect. The special AG etching solution includes: 20% to 40% ammonium bifluoride, 5% to 10% potassium fluoride, 3-8 sodium fluorosilicate, 10% to 25% nitric acid, 5% to 15% phosphoric acid, 2% to 6% lithium tartrate, 3% to 8% copper sulfate, 2% to 5% potassium dihydrogen phosphate, 3% to 8% iron nitrate, 2% to 5% zinc chloride, 0.2% to 0.5% lauroyl glutamic acid, 5% to 10% soy protein glue, and 15% to 30% water; S2: Stir thoroughly until the solution is in a uniform supersaturated solution state, that is, a special etching solution for coral fleece effect is obtained, and stand and mature at room temperature for 72 hours; S3: Pre-treat the glass surface: Laminate the back of the glass that does not need to be etched for protection, clean and pre-treat the glass surface that needs to be etched, remove surface stains and grease, and improve the adhesion of the etching solution; S4: Etching treatment: Put the glass surface into a special etching solution for coral fleece effect in a wet state and perform figure-eight ring swing etching treatment; S5: Control the temperature of the etching solution to 10-20°C, the etching time to 3-5 minutes, and the swing frequency to 30-60 cycles / minute; S6: After the etching time requirement is reached, the etching solution is promptly removed from the etching solution, and then the residual etching solution is removed by washing with pure water; S7: The cleaned product is air-dried or air-dried to obtain coral fleece effect AG etched glass.
2. The method for making coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S1, solid and liquid components need to be added in order during preparation to avoid violent heat release, and the mixture should be mixed in a corrosion-resistant container under a ventilated environment.
3. The method for making coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S2, the prepared etching solution needs to be fully mixed by mechanical stirring, and the stirring speed is controlled at 200-300 rpm for 30 to 45 minutes, until the solution is in a uniform supersaturated state without precipitation or stratification. After the stirring is completed, the solution needs to be transferred to a sealed container and left to mature at room temperature for 72 hours.
4. The method for manufacturing the coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S3, the pretreatment needs to firstly coat the non-etched surface of the glass with a protective film, using an acid-resistant polyethylene film or Teflon tape to ensure complete coverage and no bubbles; the etched surface needs to be ultrasonically cleaned with an alkaline detergent, deionized water and anhydrous ethanol for 10 minutes each, to thoroughly remove grease, dust and organic pollutants; after cleaning, the surface is blown dry with nitrogen, and a plasma activation treatment is performed in a dust-free environment for 2 to 3 minutes at a power of 50-100W.
5. The method for manufacturing the coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S4, the pretreated glass is immersed in the etching solution to keep the glass surface completely wetted and free of bubbles; the glass is clamped by an automated mechanical arm and swung to perform etching in an "eight-shaped" trajectory, with the swing amplitude controlled within 20-30 cm to ensure that the liquid evenly contacts the surface; the liquid level needs to be monitored in real time during the swinging process to avoid local over-etching; operating in a wet state can reduce the reaction interface tension and promote the formation of microscopic etching pits, thereby enhancing the three-dimensional sense of the coral fleece effect.
6. The method for manufacturing coral fleece effect AG etched glass according to claim 1, characterized in that: In step S5, the temperature of the etching solution needs to be maintained at 10-20°C by a constant temperature water bath system. Too high a temperature will lead to too fast a reaction rate and excessive surface roughness; too low a temperature may cause insufficient etching; the etching time is accurately controlled at 3 to 5 minutes, and the glass is automatically removed by the timer-linked robotic arm; the swing frequency is set to 30 to 60 revolutions per minute, and a servo motor is used to drive it.
7. The method for manufacturing coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S6, the glass is immediately transferred to a pure water tank after etching is completed, and a three-stage countercurrent rinsing process is adopted; the first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50°C pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid medicine; after cleaning, the water quality is monitored by a conductivity detector, and the conductivity must be lower than 5μS / cm, indicating that the cleaning standard is met. The glass is immediately transferred to a pure water tank after etching is completed, and a three-stage countercurrent rinsing process is adopted; the first stage is rinsed with room temperature pure water for 30 seconds to remove surface scum; the second stage is ultrasonically cleaned with 40-50°C pure water for 5 minutes to deeply remove etching by-products; the third stage is rinsed with high-pressure spray pure water for 10 seconds to ensure that there is no residual liquid medicine; after cleaning, the water quality is monitored by a conductivity detector, and the conductivity must be lower than 5μS / cm, indicating that the cleaning standard is met.
8. The method for manufacturing coral fleece effect AG etched glass according to claim 1, characterized in that: In the step S7, the cleaned glass is placed in a Class 100 dust-free environment and air-dried by a vertical wind knife system at a wind speed of 8-10 m / s, a temperature of 25-30° C., a humidity of ≤40%, and a time of 3-5 minutes; after air-drying, natural drying or infrared drying can be selected; after drying, an optical microscope is used to spot-check the surface texture to ensure that there are no scratches, bubbles or pollution, and finally a coral fleece effect AG etched glass with a gloss of 58%±0.5%, a transmittance of 70%±1%, and a haze of 31.5%-32% is obtained.