Velvet gold surface fine drawing and texture processing technology

Abstract

The present application relates to the technical field of velvet gold surface treatment, and discloses a velvet gold surface fine drawing and texture processing technology, which comprises the following steps: blank bottom mold holding, ultrasonic cleaning, steam washing, high-temperature pickling, potassium hydroxide acid removal cleaning and the like. In particular, in the drawing process, the low-speed crane is matched with the high-hardness tungsten steel needle to accurately control the drawing strength and direction. Through this fine operation, it is ensured that each drawing line is consistent and uniform, and the consistency and gloss of the metal surface are improved. By combining manual fine operation with automatic equipment, the control accuracy and flexibility of the drawing process are significantly improved. The accuracy of manual operation and the stability of automatic equipment complement each other, so that the texture of the metal surface is more perfect and artistic. Compared with a completely automatic system, this combined mode can better cope with high-difficulty surface treatment requirements, not only improving production efficiency, but also ensuring the quality of each detail.

Description

Technical Field

[0001] This invention relates to a fine brushing and texturing process and system for velvet gold surface, belonging to the field of velvet gold surface cutting and processing technology. Background Technology

[0002] Velvet gold surface treatment is widely used in the production of high-end decorative metal products. It mainly involves processes such as wire drawing, pickling, and cleaning to enhance the luster, texture, and durability of the metal surface. However, existing velvet gold surface treatment processes have some significant drawbacks, leading to low production efficiency, inconsistent surface finishes, and even affecting product quality and aesthetics.

[0003] In existing technologies, wire drawing processes mainly rely on automated equipment. While automation can improve production efficiency, its fixed operating methods make it difficult to achieve precise control over each wire drawing texture, resulting in inconsistent surface finishes and uneven textures, failing to meet the quality requirements of high-end decorative items. Furthermore, fully automated processing methods have poor adaptability to materials, especially when processing special materials requiring meticulous control, often failing to achieve ideal results.

[0004] To address these issues, the industry typically employs a combination of manual precision control and automation, integrating manual operation with low-speed automated equipment to improve the accuracy and flexibility of surface treatment. While this approach can compensate for the limitations of automated equipment to some extent, in practical applications, the instability of manual operation and the speed limitations of automated equipment still prevent the achievement of entirely ideal surface results, especially when dealing with fine textures and special materials, where surface quality control remains a significant challenge.

[0005] Furthermore, existing cleaning and pickling processes, while improving metal surface quality, often result in residual oxides or corrosive substances on the metal surface due to improper temperature and time control during operation, affecting the subsequent treatment effect and surface quality. Although some processes attempt to solve this problem by performing multiple cleaning and pickling processes, it is still difficult to ensure the consistency and stability of surface treatment while maintaining high efficiency.

[0006] Therefore, although existing technologies have solved the efficiency problem in surface treatment to some extent, there are still many technical bottlenecks in terms of processing accuracy, surface quality and process stability. Summary of the Invention

[0007] This invention provides a fine brushing and texture treatment process for velvet gold surface, the main purpose of which is to solve the problem of ( ).

[0008] To achieve the above objectives, the present invention provides a fine brushing and texture treatment process for a velvet gold surface, characterized in that the process includes the following steps: S1. After the velvet gold blank is molded, it is cleaned with an ultrasonic cleaning device at a temperature range of 60°C to 80°C for 5 to 10 minutes. During the cleaning process, a dewaxing agent is used to remove the surface wax layer and attached impurities. Subsequently, a steam spray cleaning device is used to further clean the surface of the blank at a temperature of 90°C to 120°C to remove residual impurities from the cleaning process. S2, High-temperature pickling and deacidification cleaning: The cleaned billet bottom undergoes high-temperature pickling using concentrated sulfuric acid at a temperature of 260°C to 300°C for 1 to 3 seconds. Then, the pickled billet bottom is immersed in a potassium hydroxide solution for 1 to 5 minutes at a temperature of 60°C to 100°C to ensure complete neutralization of the acid. Finally, it is rinsed with clean water for 3 to 5 minutes at a flow rate of 2 L / min to ensure no acid residue remains on the surface. S3, Wire drawing process preparation: Fix the high-hardness tungsten steel needle on the crane, adjust the crane speed to the lowest setting to ensure the stability and precision of the wire drawing process; use a clamp to fix the bottom of the velvet gold blank to ensure the stability of the blank bottom during the wire drawing process; at the same time, adjust the feed rate of the wire drawing needle to make each wire drawing action uniform and stable. S4, Fine Wire Drawing Operation: During fine wire drawing, the operator stabilizes the bottom of the velvet gold billet with their left hand to ensure stability during the drawing process, and precisely controls the speed and position of the crane with their right hand to adjust the feed rate and direction of the tungsten carbide needle, ensuring the accuracy of the wire drawing. A high-hardness tungsten carbide needle is used to pull vertically from above the billet bottom surface, with the wire drawing force controlled between 30N and 50N. The pulling force of each wire is monitored in real time by a high-precision force sensor, and the monitored pulling force data is transmitted to the control system. The control system receives the pulling force data from the sensor in real time and compares it with a preset standard. If the sensor detects a deviation in the pulling force, the control system automatically adjusts the crane speed or the feed rate of the tungsten carbide needle based on the feedback pulling force data to compensate for fluctuations in the pulling force and ensure consistent pulling force for each wire. During the wire drawing process, a guide tool is used to assist in guiding the tungsten carbide needle to slide evenly along the billet bottom surface to avoid local deviations and ensure uniform depth of each wire drawing. S5. Post-treatment and cleaning: After wire drawing, the metal is first cleaned using an ultrasonic cleaning device at a temperature of 60°C to 80°C for 10 minutes with a cleaning agent concentration of 0.5%. Then, a steam cleaning device is used for further cleaning at a temperature of 90°C to 120°C, followed by high-temperature acid pickling at 260°C to 300°C for 1 to 3 seconds. This is followed by deacidification cleaning with a potassium hydroxide solution at 60°C to 100°C for 1 to 5 minutes. Finally, the metal is rinsed with clean water at a flow rate of 2L / min for 3 to 5 minutes to ensure a smooth, clean surface free of contaminants. S6, Inspection and Adjustment of Wire Drawing Effect: During and after the wire drawing process, visual inspection is conducted in conjunction with tools such as microscopes, depth gauges, and gloss meters to ensure that the texture of each wire is consistent in depth and color. Microscopes are used to check the depth and uniformity of the texture, depth gauges are used to confirm the consistency of the wire drawing depth, and gloss meters are used to measure the surface gloss to ensure that the surface effect meets the standards.

[0009] Preferably, the ultrasonic cleaning device uses ultrasonic waves with a frequency of 20kHz to 40kHz to ensure that surface impurities are fully removed.

[0010] Preferably, the concentrated sulfuric acid used in the pickling process has a concentration of 98% or higher to ensure the removal of oxides from the metal surface.

[0011] Preferably, the water rinsing step uses a constant flow rate of 2L / min and a temperature control system is used to maintain the water temperature between 20°C and 30°C.

[0012] Preferably, during the wire drawing process, the feed rate of the tungsten carbide needle is 0.5 to 2 mm / s to ensure the uniformity of the wire drawing effect.

[0013] Preferably, the force sensor has an accuracy of ±0.1N, and is used to accurately monitor changes in wire drawing force and automatically adjust the wire drawing speed.

[0014] Preferably, the guiding tool is a guide rail, guide groove, or guide clamp. The tungsten steel needle and the guiding tool are fixed together by an insertion connection to ensure that the tungsten steel needle slides evenly along the bottom surface of the billet during the wire drawing process.

[0015] Preferably, the wire drawing effect is inspected using a microscope, a depth gauge, and a gloss meter, wherein the microscope has a magnification of 500x to ensure the fineness of the texture.

[0016] Preferably, the pickling step lasts for 1 to 3 seconds to ensure complete removal of surface oxides and avoid excessive corrosion.

[0017] Preferably, the water used in the cleaning process has a pH value of 7 to avoid adverse effects on the metal surface.

[0018] Compared to the problems described in the background art, the beneficial effects of the present invention are: 1. By combining meticulous manual operation with automated equipment, this technical solution significantly improves the control precision and flexibility of the wire drawing process. The accuracy of manual operation and the stability of automated equipment complement each other, resulting in a more perfect and artistic texture on the metal surface. Compared to fully automated systems, this combination can better handle challenging surface treatment requirements, not only improving production efficiency but also ensuring the quality of every detail.

[0019] 2. Precise requirements were set for the operation of the tungsten carbide needles. By controlling the drawing force and direction, the consistency and luster of each drawn wire texture were ensured. Especially for special materials like velvet gold, the precise operation of the tungsten carbide needles achieved high uniformity of surface texture, resulting in perfect unity of depth, color, and shape, greatly enhancing the overall aesthetics of velvet gold. This precise control technique ensures that each drawn wire effect is closely aligned, not only improving surface quality but also giving the metal surface more artistry and decorative appeal. While achieving automation, it also helps to retain traditional processes that are beneficial for improving quality in certain areas.

[0020] 3. The synergistic effect of multiple cleaning and pickling steps ensures perfect uniformity in surface treatment: By combining meticulous cleaning and pickling steps, especially through precise control of ultrasonic cleaning, pickling time, and temperature range, this solution effectively avoids the risk of surface corrosion or oxide residue. Precise adjustments at each stage ensure thorough cleaning and fine treatment of the metal surface, not only improving its corrosion resistance but also optimizing its adaptability to subsequent processing. Through this combination of technologies, the metal surface achieves extremely high smoothness, and the depth and consistency of the surface treatment effect are significantly improved.

[0021] 4. By precisely controlling water flow and temperature during the cleaning process, this technical solution ensures that each stage of metal surface treatment reaches its optimal state. It avoids surface quality fluctuations caused by temperature differences and water flow fluctuations, effectively improving cleaning efficiency and stability. This refined water quality control method ensures consistent metal surface quality after cleaning, further reducing subsequent processing problems caused by surface contamination or water quality fluctuations, and improving overall production efficiency. Attached Figure Description

[0022] Figure 1 This is a process flow diagram of the present invention.

[0023] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] This application provides a fine brushing and texture treatment process for a velvet gold surface. The process includes the following steps: S1. After the velvet gold blank is molded, it is cleaned with an ultrasonic cleaning device at a temperature range of 60°C to 80°C for 5 to 10 minutes. During the cleaning process, a dewaxing agent is used to remove the surface wax layer and attached impurities. Subsequently, a steam spray cleaning device is used to further clean the surface of the blank at a temperature of 90°C to 120°C to remove residual impurities from the cleaning process. S2, High-temperature pickling and deacidification cleaning: The cleaned billet bottom undergoes high-temperature pickling using concentrated sulfuric acid at a temperature of 260°C to 300°C for 1 to 3 seconds. Then, the pickled billet bottom is immersed in a potassium hydroxide solution for 1 to 5 minutes at a temperature of 60°C to 100°C to ensure complete neutralization of the acid. Finally, it is rinsed with clean water for 3 to 5 minutes at a flow rate of 2 L / min to ensure no acid residue remains on the surface. S3, Wire drawing process preparation: Fix the high-hardness tungsten steel needle on the crane, adjust the crane speed to the lowest setting to ensure the stability and precision of the wire drawing process; use a clamp to fix the bottom of the velvet gold blank to ensure the stability of the blank bottom during the wire drawing process; at the same time, adjust the feed rate of the wire drawing needle to make each wire drawing action uniform and stable. S4, Fine Wire Drawing Operation: During fine wire drawing, the operator stabilizes the bottom of the velvet gold billet with their left hand to ensure stability during the drawing process, and precisely controls the speed and position of the crane with their right hand to adjust the feed rate and direction of the tungsten carbide needle, ensuring the accuracy of the wire drawing. A high-hardness tungsten carbide needle is used to pull vertically from above the billet bottom surface, with the wire drawing force controlled between 30N and 50N. The pulling force of each wire is monitored in real time by a high-precision force sensor, and the monitored pulling force data is transmitted to the control system. The control system receives the pulling force data from the sensor in real time and compares it with a preset standard. If the sensor detects a deviation in the pulling force, the control system automatically adjusts the crane speed or the feed rate of the tungsten carbide needle based on the feedback pulling force data to compensate for fluctuations in the pulling force and ensure consistent pulling force for each wire. During the wire drawing process, a guide tool is used to assist in guiding the tungsten carbide needle to slide evenly along the billet bottom surface to avoid local deviations and ensure uniform depth of each wire drawing. During the wire drawing process, sensors monitor the wire drawing force applied to the base of the velvet blank in real time and transmit the measurement results to the control system via a standard signal interface. This control system is designed based on fundamental automation control principles familiar to those skilled in the art. It receives real-time tension data from the sensors and compares it with preset standards. When the tension data from the sensors exceeds the preset allowable range, the control system automatically performs adjustments. The system compensates for the wire drawing force in real time by changing the crane speed or the feed rate of the tungsten steel needle. Specifically, when the feedback tension is low, the system increases the crane speed or the feed rate; when the feedback tension is high, the system decreases the speed or slows down the feed rate. These adjustment methods and operations are familiar to those skilled in the art and ensure that the tension during the wire drawing process remains within the target range. To reduce unnecessary frequent adjustments, the control system has a tolerance range. The system only initiates compensation when the tension deviation detected by the sensors exceeds this tolerance range. This tolerance control method is a standard design approach for those skilled in the art, ensuring consistency in tension while avoiding unnecessary interference. Throughout the process, the tension data is continuously monitored by sensors and input to the control system, forming a closed-loop feedback mechanism. Based on this mechanism, the control system adjusts the crane operation in real time to ensure the consistency of the wire drawing force on each wire. This control method is widely used in conventional automation systems in this field, is simple to operate and easy to implement, and all belong to extended implementation methods known to those skilled in the art.

[0026] S5. Post-treatment and cleaning: After wire drawing, the metal is first cleaned using an ultrasonic cleaning device at a temperature of 60°C to 80°C for 10 minutes with a cleaning agent concentration of 0.5%. Then, a steam cleaning device is used for further cleaning at a temperature of 90°C to 120°C, followed by high-temperature acid pickling at 260°C to 300°C for 1 to 3 seconds. This is followed by deacidification cleaning with a potassium hydroxide solution at 60°C to 100°C for 1 to 5 minutes. Finally, the metal is rinsed with clean water at a flow rate of 2L / min for 3 to 5 minutes to ensure a smooth, clean surface free of contaminants. S6, Inspection and Adjustment of Wire Drawing Effect: During and after the wire drawing process, visual inspection is conducted in conjunction with tools such as microscopes, depth gauges, and gloss meters to ensure that the texture of each wire is consistent in depth and color. Microscopes are used to check the depth and uniformity of the texture, depth gauges are used to confirm the consistency of the wire drawing depth, and gloss meters are used to measure the surface gloss to ensure that the surface effect meets the standards.

[0027] The ultrasonic cleaning device uses ultrasonic waves with a frequency of 20kHz to 40kHz to ensure thorough removal of surface impurities; during acid pickling, concentrated sulfuric acid with a concentration of over 98% is used to ensure the removal of oxides from the metal surface; the clean water rinsing step uses a constant flow rate of 2L / min, and a temperature control system maintains the water temperature between 20°C and 30°C; during wire drawing, the feed rate of the tungsten carbide needle is 0.5 to 2mm / s to ensure uniformity of the wire drawing effect; the force sensor has an accuracy of ±0.1N and is used to accurately monitor changes in the wire drawing force. The wire drawing speed is automatically adjusted; the guiding tool is a guide rail, guide groove, or guide clamp. The tungsten steel needle and the guiding tool are fixed together by an insertion connection to ensure that the tungsten steel needle slides evenly along the bottom surface of the billet during the wire drawing process; the wire drawing effect is inspected by a microscope, depth gauge, and gloss meter, with the microscope having a magnification of 500x to ensure the fineness of the texture; the pickling step takes 1 to 3 seconds to ensure the complete removal of surface oxides and avoid excessive corrosion; the water used in the cleaning process has a pH value of 7 to avoid adverse effects on the metal surface.

[0028] Example 1: This embodiment describes a tungsten carbide needle wire drawing process combining manual operation and automated control, applied in the production of high-end decorative products. Assuming the product is a high-quality velvet gold ornament with a required fine and artistic surface, a combined operation method using a low-speed crane and tungsten carbide needles is employed to ensure consistency in the depth, color, and shape of each wire drawing. This method uses automated equipment to control the general direction and force of the wire drawing, while manual operation finely adjusts the direction and speed to ensure that the effect of each wire precisely meets the product requirements.

[0029] In the specific operation, the metal surface is first cleaned with ultrasonic waves and steam to remove impurities, ensuring the smooth progress of subsequent processes. Next, an acid pickling step is performed to remove the oxide layer from the metal surface. At this point, the wire drawing step is initiated, with a crane automatically pulling the metal surface, while the tungsten carbide needles are manually operated by workers to precisely control the details of each wire to achieve the desired texture effect.

[0030] This process combines automated equipment with manual operation, ensuring both production efficiency and precise human control to guarantee the high consistency of each brushed texture, resulting in a perfect velvety gold effect on the product surface. This method is more flexible and precise than traditional methods that rely entirely on manual operation, and compared to fully automated processes, it can handle more complex and intricate texture requirements, thus improving both production efficiency and product quality.

[0031] Furthermore, the precise control of the operating force and direction of the tungsten carbide needles in this technical solution ensures that the luster and shape of each texture are uniform and consistent, achieving an effect that traditional processes cannot achieve. Ultimately, after multiple rounds of cleaning and pickling, the product surface exhibits a unique artistic feel, with uniform surface gloss and distinct texture layers, displaying extremely high decorative value. This makes the combination of tungsten carbide needles and automated equipment possible, solving the technical challenge of achieving fine textures in fully automated systems in existing technologies. It also significantly improves the stability and aesthetics of the surface effect, making it particularly suitable for surface treatment of high-end metal products with high decorative requirements.

[0032] Example 2: This embodiment demonstrates a practical application scenario in high-precision surface treatment processes, specifically for controlling the surface texture of metal ornaments. To improve the precision and consistency of decorative metal surfaces, this embodiment employs a combination of manual operation and automated control. In practical applications, this process combines low-speed hoisting equipment with tungsten carbide needles. The automated equipment primarily controls the overall wire drawing direction and force, while manual operation refines the process through precise adjustments, ensuring consistency in the depth, gloss, and shape of each wire drawing texture.

[0033] Experimental data shows that the surface quality of the wire drawing process is significantly improved after using this technology. Compared with the traditional fully automated wire drawing method, the surface gloss is increased by 12% and the texture uniformity is improved by 15%. This improvement not only makes the surface treatment more refined, but also avoids the problem of uneven texture that occurs in traditional fully automated systems.

[0034] In this embodiment, the automated equipment first performs a preliminary wire drawing on the metal surface, followed by meticulous processing using tungsten carbide needles. Especially for complex surface texture requirements, precise manual operation ensures that each wire drawing achieves the desired standard. The variations in the wire drawing texture are no longer simply automatically generated, but dynamically adjusted by the operator according to actual needs. This high-precision control allows the surface to not only maintain a high production rate but also achieve superior aesthetic performance.

[0035] This technical solution achieves higher quality standards in the surface treatment of metal ornaments, and increases production efficiency by 20% compared to traditional methods. This method does not rely solely on fully automated equipment control, but combines it with meticulous manual operation, resulting in more refined and consistent brushed textures. This provides a more unique artistic expression for high-end custom products in the market, meeting the demand for high-quality decorative effects.

[0036] Example 3: This embodiment provides an optimized fine brushing and texturing process for velvet gold surface. Specifically, this embodiment focuses on optimizing force control, temperature control, and cleaning steps during the brushing process, and describes the specific technical details.

[0037] In this embodiment, the wire drawing process continues to use a low-speed crane and high-hardness tungsten steel needles, but the control system is further optimized to ensure precise control of the wire drawing force and speed. During the wire drawing process, the wire drawing force is first monitored in real time by a high-precision force sensor (control accuracy ±0.1N). The sensor transmits the wire drawing force data to the automatic adjustment system in real time to ensure the consistency of the depth of each wire during the wire drawing process.

[0038] Specifically, during the wire drawing process, the operator makes initial settings by controlling the rotation speed of the low-speed crane and the feed rate of the wire drawing needle. For example, the system automatically adjusts the wire drawing force and speed based on real-time feedback to ensure the consistency of the depth of each texture. The feedback mechanism of this automatic adjustment system can adjust the power parameters in real time according to the subtle differences that occur during the actual wire drawing process, avoiding the instability caused by manual operation in traditional processes. These are all extended implementation methods known to those skilled in the art. In order to further ensure the uniformity and consistency of the texture, this embodiment introduces a high-strength alloy guide tool in the operation. This tool precisely guides the tungsten carbide needle to slide evenly along the metal surface, ensuring that each wire drawing achieves the expected effect. The guide tool and the force sensor work together to form a closed-loop feedback control system, realizing high-precision control of each wire drawing pattern throughout the process. At the beginning of the wire drawing operation, the feed rate of the tungsten carbide needle is set to 0.5 to 2 mm / s, and the wire drawing force is controlled between 30N and 50N. During operation, the sensor continuously detects the wire drawing force. Once a force deviation is detected, the system automatically adjusts the crane speed and the tungsten steel needle feed rate to ensure consistent depth and no texture deviation during the wire drawing process.

[0039] Pickling and rinsing are critical steps in ensuring the quality of metal surfaces. This embodiment optimizes the control precision of the pickling process by precisely controlling the temperature of concentrated sulfuric acid (260°C to 300°C) and the pickling time (1 to 3 seconds) to ensure that oxides on the metal surface are completely removed without causing surface corrosion.

[0040] After pickling, the metal billet bottom needs to be treated with potassium hydroxide solution for deacidification. During deacidification, the solution temperature is set between 60°C and 100°C to ensure complete neutralization of the acid and prevent acid residue from affecting the surface quality. The deacidification time is 1 to 5 minutes, adjusted according to the degree of pickling on the metal surface. Throughout the process, a high-efficiency sensor monitors the liquid temperature and chemical reaction in real time, avoiding inaccurate temperature control and over-reaction, ensuring the ideal state of the metal surface.

[0041] Furthermore, in the water rinsing process, this embodiment further optimizes the precise control of water flow and temperature. The water flow rate is controlled at a constant 2L / min, and the temperature is set between 20°C and 30°C. The temperature control system ensures that the temperature of the cleaning solution remains constant, avoiding inconsistent surface treatment caused by fluctuations in water flow or temperature.

[0042] Through the optimized process of this embodiment, and verified by experimental data, the surface quality is significantly improved compared to traditional processes. After brushing, the uniformity of surface texture depth reaches over 95%, the gloss of the brushed texture is increased by 12%, and the texture uniformity is improved by 15%. Especially in terms of fine control of texture, the surface effect exhibits high consistency and aesthetics, fully meeting the needs of high-end decorative products.

[0043] In specific experiments, visual inspection and microscopic observation revealed that the optimized wire drawing process resulted in a finer, more consistent texture on the metal surface, with significantly improved consistency across different product batches. When surface gloss was measured using a gloss meter, the results showed that the surface gloss was improved by more than 10% compared to traditional fully automated wire drawing processes, significantly outperforming similar products on the market.

[0044] Example 4: This embodiment provides an optimized fine brushing and texturing process for velvet gold surfaces. The goal is to further improve the texture uniformity, gloss, and corrosion resistance of the metal surface, and to ensure that the process can be accurately and efficiently implemented in the production of high-end decorative products. Specific optimizations include precise control over the brushing process, pickling and cleaning steps, and accurate adjustment of parameters such as brushing force, brushing direction, temperature, and time, ensuring that the effect of each step meets technical requirements.

[0045] The wire drawing process is a crucial step in ensuring the fineness and uniformity of the metal surface texture. This embodiment introduces the following optimization measures into the wire drawing process: Precise control of drawing force: A high-precision force sensor is used to monitor the drawing force in real time, with a control accuracy of ±0.1N. The sensor transmits the force value to the control system in real time, and automatically adjusts the drawing force based on the feedback information to ensure that the depth of each drawing texture is consistent. The drawing force control range is 30N to 50N. This precise adjustment can avoid force fluctuations that may occur during the drawing process and ensure the uniform depth of the metal surface texture.

[0046] Feed rate and drawing direction adjustment: During crane operation, the feed rate is set to 0.5 to 2 mm / s to ensure smooth drawing action. Simultaneously, the manual operation section precisely adjusts the feed rate and direction of the drawing needle, combined with the automated control system, to ensure consistent texture direction for each line. Each drawing action is automatically corrected by the monitoring system to minimize human error.

[0047] Use of high-strength alloy guide tools: To further ensure that the drawing needle slides evenly along the bottom surface of the billet, this embodiment uses guide tools made of high-strength alloy material. These tools effectively prevent the tungsten carbide needle from shifting during the drawing process, ensuring the stability and consistency of the drawn wire texture.

[0048] Precise control of pickling: To ensure that oxides are removed from the metal surface without causing excessive corrosion, the pickling temperature in this embodiment is precisely controlled between 260°C and 300°C, the pickling time is controlled between 1 and 3 seconds, and the acid concentration is above 98%. After pickling, potassium hydroxide solution is used for deacidification treatment to ensure that the acid is completely neutralized and to prevent residual acid from negatively affecting the surface quality.

[0049] Precise control of water flow and temperature: During the clean water rinsing stage, a constant water flow of 2L / min is used, with the water temperature maintained between 20°C and 30°C. A temperature control system ensures a constant water temperature, preventing temperature fluctuations from affecting surface quality. Simultaneously, the rinsing time is set within 3 to 5 minutes to ensure consistent results for each rinse.

[0050] To ensure that each variable in the process flow supports the logic of the technical solution and achieves the expected technical effect, this embodiment describes in detail the relationship between key parameters and technical effects: Wire drawing force (F): Wire drawing force is a key parameter affecting the consistency of wire drawing texture depth. It is monitored in real time by a force sensor, and the wire drawing speed is adjusted based on feedback to ensure consistent texture depth for each line. The control range of wire drawing force is 30N to 50N, with a control accuracy of ±0.1N.

[0051] Feed rate (V): The feed rate controls the smoothness of the drawing process and avoids abrupt changes. The uniformity of each drawing action is ensured by adjusting the crane speed and the feed rate of the drawing needle (0.5 to 2 mm / s).

[0052] The pickling temperature range is 260°C to 300°C, and the time is 1 to 3 seconds, ensuring that oxides on the metal surface can be removed without causing excessive corrosion. During the cleaning process, the temperature of the clean water is controlled between 20°C and 30°C to ensure that uneven surface quality is avoided due to temperature differences. By precisely controlling these key parameters, the execution effect of each process step is guaranteed, and the metal surface quality is ensured to meet the expected standards.

[0053] The experimental data and technical effects show that, after experimental verification of the optimized process, the surface quality of this embodiment is significantly better than that of traditional processes. Experimental data indicates improved texture depth consistency: the uniformity of the brushed texture after precise control reaches over 95%, an improvement of 15% compared to traditional methods; enhanced gloss: the optimized brushing process increases the gloss of the metal surface by 12%, significantly better than similar products on the market; and improved texture uniformity: the texture uniformity is improved by 15%, effectively avoiding the uneven texture problem commonly found in traditional processes.

[0054] Example 5: This embodiment optimizes key technical aspects of the fine brushing and texture processing of velvet gold surfaces, aiming to further improve the uniformity and stability of the surface texture. For example: In the initial stage of the process, the velvet gold blank is first molded using a mold, and then cleaned using an ultrasonic cleaning device. The ultrasonic cleaning device operates at a frequency of 30kHz to ensure effective removal of the wax layer and impurities from the blank surface. The cleaning temperature is set at 65°C to 75°C for 7 minutes, and a dewaxing agent is used during the cleaning process to ensure the removal of attached impurities. Next, a steam cleaning device is used to further clean the blank, with the temperature controlled at 100°C to 110°C for 5 minutes, to remove any impurities remaining from the ultrasonic cleaning.

[0055] The cleaned billet bottom undergoes pickling. Concentrated sulfuric acid (98%) is used, with the pickling temperature controlled between 270°C and 290°C, and the pickling duration strictly controlled within 2 seconds to ensure complete removal of surface oxides without causing surface corrosion. After pickling, the billet bottom is immediately immersed in a potassium hydroxide solution for deacidification at 70°C to 90°C for 2 minutes. This process thoroughly neutralizes the acid, preventing acid residue from affecting subsequent processes. Finally, the billet is rinsed with clean water at a flow rate of 2 L / min and a temperature between 25°C and 30°C for 4 minutes to ensure complete removal of acid and impurities.

[0056] Before wire drawing, high-hardness tungsten carbide needles are first fixed on a low-speed crane, with the crane's speed set to the lowest setting to ensure smooth wire drawing. Then, a precision clamp is used to secure the velvet gold blank base, ensuring its stability during wire drawing. At this point, the worker manually adjusts the crane speed and the feed rate of the tungsten carbide needles to ensure uniformity and precision in the wire drawing process. Depending on the desired texture depth, the feed rate of the tungsten carbide needles is adjusted between 0.8 mm / s and 1.5 mm / s.

[0057] During the fine wire drawing stage, the operator stabilizes the billet bottom with their left hand and controls the crane with their right, pulling the tungsten carbide needle vertically from the billet bottom surface. During each wire drawing process, the applied drawing force is strictly controlled between 35N and 45N, and monitored in real time by a force sensor to ensure consistent depth of each texture. The sensor's accuracy is ±0.1N, accurately monitoring force changes during the wire drawing process and automatically adjusting the crane speed and tungsten carbide needle feed rate based on feedback to maintain texture consistency. During the wire drawing process, guiding tools (such as guide rails) are also used to assist in guiding the tungsten carbide needle to slide evenly along the billet bottom surface, ensuring uniform wire drawing texture.

[0058] After wire drawing, the surface is first cleaned again using an ultrasonic cleaning device at a temperature of 65°C to 75°C for 10 minutes with a cleaning agent concentration of 0.5%. This process further removes residual impurities and surface contaminants. Subsequently, a high-temperature steam cleaning device is used, with the temperature set at 100°C to 110°C for 5 minutes to ensure no contaminants remain on the surface. In the subsequent pickling step, the surface of the billet is pickled with a high-concentration sulfuric acid (98%) for a strictly controlled time of 2 seconds to prevent excessive corrosion. Finally, a potassium hydroxide solution (temperature set at 70°C to 90°C) is used for deacidification for 3 minutes to ensure complete neutralization of the acid.

[0059] After the wire drawing process is completed, surface quality is inspected using tools such as a microscope, depth gauge, and gloss meter. The microscope, with a magnification of 500x, confirms the depth and uniformity of the texture; the depth gauge is used to check the consistency of the wire drawing depth; and the gloss meter measures the surface gloss to ensure that the surface effect meets the predetermined standards. If inconsistent texture depth or gloss does not meet the standards, the crane speed, feed rate, and wire drawing force during the wire drawing process are immediately adjusted to ensure that the depth and gloss of each texture are consistent.

[0060] Example 6: In the ultrasonic cleaning process, an ultrasonic frequency range of 20kHz to 40kHz, a temperature range of 60°C to 80°C, and a cleaning time of 5 to 10 minutes were selected. The ultrasonic frequency selection within the 20kHz to 40kHz range effectively removes surface impurities without damaging the metal surface. Lower frequency ultrasonic waves have longer wavelengths and generate larger vibration amplitudes, suitable for removing larger impurities and dirt adhering to the surface, while higher frequency ultrasonic waves are better at removing fine stains and surface residues. Therefore, selecting an appropriate frequency within this range ensures a balance between cleaning efficiency and effectiveness. The cleaning temperature is set between 60°C and 80°C because ultrasonic cleaning achieves optimal cleaning results within this temperature range, maximizing cleaning efficiency without damaging the metal surface. The cleaning time is set to 5 to 10 minutes to ensure complete removal of dirt from the metal surface while avoiding negative effects from prolonged ultrasonic irradiation.

[0061] In the pickling step, a temperature of 260°C to 300°C, a pickling time of 1 to 3 seconds, and a concentrated sulfuric acid concentration of 98% or higher were selected. The pickling temperature range of 260°C to 300°C accelerates the dissolution and removal of oxides while avoiding excessive temperature that could lead to metal surface corrosion. Too low a temperature results in poor pickling effectiveness, making it difficult to remove oxides and affecting the subsequent processes. Therefore, this temperature range was optimized after multiple experimental verifications. The pickling time of 1 to 3 seconds, controlled within this range, ensures complete removal of surface oxides while avoiding excessive corrosion. Excessive pickling time may cause unnecessary corrosion on the metal surface, affecting the subsequent wire drawing process. A concentrated sulfuric acid concentration of 98% or higher ensures a strong deoxidizing effect during the pickling process. The higher concentration of sulfuric acid dissolves the oxide layer on the metal surface more quickly, preventing oxide residue from affecting the metal's luster and texture.

[0062] In the wire drawing process, the combination of manual operation and automated equipment, especially the adjustment of the crane speed and the feed rate of the tungsten steel needle, ensures the consistency of texture depth, shape and gloss during the wire drawing process.

[0063] And in the specific operation of the wire drawing process, such as the adjustment of the crane during the wire drawing process: the operator first starts the automated equipment and sets the basic wire drawing direction and initial wire drawing speed of the crane. The speed of the crane is adjusted between 0.2 rpm and 0.5 rpm, and the specific speed selection depends on the desired texture detail. A slower crane speed can provide a more refined wire drawing effect, which is suitable for generating delicate textures; while a faster crane speed is suitable for a coarser or larger-amplitude wire drawing effect.

[0064] Feed rate adjustment: The feed rate is controlled between 0.5 mm / s and 2 mm / s. The operator adjusts the feed rate to control the depth of each wire drawing according to the desired surface texture. If a deeper wire drawing texture is required, the operator reduces the feed rate to 0.5 mm / s to ensure a deeper texture effect with each wire drawing. Conversely, if a shallower texture effect is required, the feed rate is increased to 2 mm / s to reduce the impact of each wire drawing on the surface, resulting in a more uniform and delicate texture.

[0065] Manual adjustment of wire drawing direction and force: Due to the special properties of velvet gold material, the direction and force of the wire drawing must be finely adjusted according to the actual situation. The operator controls the direction and depth of each wire drawing by manually adjusting the position, angle, and applied force of the tungsten carbide needle. The operator's left hand stabilizes the billet base to ensure its stability during the wire drawing process, while the right hand operates the hoist and tungsten carbide needle.

[0066] Drawing direction: The operator manually adjusts the angle of the tungsten carbide needle according to the shape and texture requirements of the metal surface. If a more uniform texture is required, the operator keeps the tungsten carbide needle perpendicular to the surface; if a directional texture is desired, the operator adjusts the tilt angle of the tungsten carbide needle appropriately, and the drawing texture is aligned in a specific direction by fine-tuning the angle.

[0067] Drawing Force: The operator controls the depth of the texture by manually adjusting the crane speed and the applied drawing force. By increasing or decreasing the pressure of the tungsten carbide needles, the operator can ensure that the depth of each drawn wire is consistent. When a deeper texture is needed, the operator slightly increases the force applied to the tungsten carbide needles, controlling the drawing force between 35N and 50N. If a shallower texture is needed, the applied force is reduced to ensure a smooth metal surface.

[0068] Feedback Adjustment: Feedback during the wire drawing process is crucial. After each wire drawing, the operator assesses the texture effect visually and tactilely. If the texture depth is inconsistent or the wire drawing effect is not as expected, the operator will immediately adjust the crane speed, feed rate, and applied force, fine-tuning every detail of the wire drawing process to ensure the uniformity and consistency of the texture.

[0069] Fine-tuning auxiliary tools: To assist operators in manually adjusting the direction and force of wire drawing, guide tools (such as guide rails or guide clamps) are used to ensure that the tungsten carbide needles maintain a consistent trajectory during the wire drawing process and to prevent deviation or distortion. Guide tools allow for more precise adjustments to the force and direction during wire drawing, thereby ensuring a high degree of consistency in the depth, gloss, and shape of each texture.

[0070] After wire drawing, the surface is first cleaned again using an ultrasonic cleaning device at a temperature of 65°C to 75°C for 10 minutes with a cleaning agent concentration of 0.5%. This process further removes residual impurities and surface contaminants. Subsequently, a high-temperature steam cleaning device is used, with the temperature set at 100°C to 110°C for 5 minutes to ensure no contaminants remain on the surface. In the subsequent pickling step, the surface of the billet is pickled with a high-concentration sulfuric acid (98%) for a strictly controlled time of 2 seconds to prevent excessive corrosion. Finally, a potassium hydroxide solution (temperature set at 70°C to 90°C) is used for deacidification for 3 minutes to ensure complete neutralization of the acid.

[0071] After the wire drawing process is completed, surface quality is inspected using tools such as a microscope, depth gauge, and gloss meter. The microscope, with a magnification of 500x, confirms the depth and uniformity of the texture; the depth gauge is used to check the consistency of the wire drawing depth; and the gloss meter measures the surface gloss to ensure that the surface effect meets the predetermined standards. If inconsistent texture depth or gloss does not meet the standards, the crane speed, feed rate, and wire drawing force during the wire drawing process are immediately adjusted to ensure that the depth and gloss of each texture are consistent.

[0072] Example 7: After the velvet gold blank is molded, it is cleaned using an ultrasonic cleaning device. The ultrasonic frequency is set to 30kHz, the cleaning temperature range is 65°C to 75°C, and the cleaning time is controlled at 7 minutes. During the cleaning process, a dewaxing agent is used to remove the surface wax layer and attached impurities, ensuring a clean and residue-free surface. Next, the blank surface is further cleaned using a steam spray cleaning device at a temperature of 90°C to 110°C to remove any impurities that may have remained during the cleaning process. After cleaning, the blank is subjected to high-temperature acid pickling using 98% concentrated sulfuric acid, with the pickling temperature set between 270°C and 290°C, and the pickling time strictly controlled within 2 seconds. This control ensures complete removal of oxides without causing excessive corrosion. After acid pickling, the blank is immersed in a potassium hydroxide solution at a temperature of 70°C to 90°C for 2 to 3 minutes to ensure that the acid is completely neutralized. Finally, rinse with clean water (temperature 20°C to 30°C), at a flow rate of 2L / min, for 3 to 5 minutes, to ensure no acid residue remains. Before the wire drawing operation, high-hardness tungsten carbide needles are first fixed on a low-speed crane, with the crane speed set to the lowest setting to ensure smoothness during the drawing process. The feed rate of the tungsten carbide needles is adjustable from 0.8mm / s to 1.5mm / s, depending on the desired texture effect. The velvet gold blank base is stably fixed with clamps to prevent vibration or positional shift during the drawing process. The operator manually controls the crane speed and the position of the tungsten carbide needles to adjust the feed rate, ensuring uniformity and depth of the drawn texture. In the fine drawing stage, the operator controls the depth and gloss consistency of each drawn texture through visual inspection and real-time feedback from the force sensor. The drawing force is controlled between 35N and 45N to ensure stable texture depth. The force sensor has an accuracy of ±0.1N, accurately monitoring force changes during the drawing process and automatically adjusting the crane speed and the feed rate of the tungsten carbide needles based on feedback to ensure consistent depth of each texture. Guide tools (such as guide rails or guide clamps) are used to guide the tungsten steel needles to slide evenly along the bottom surface of the billet, avoiding deviations during the wire drawing process.

[0073] After wire drawing, the surface is first cleaned again using an ultrasonic cleaner at a temperature controlled between 65°C and 75°C, with a cleaning agent concentration of 0.5% for 10 minutes to remove any remaining impurities. Next, a steam cleaner is used for high-temperature cleaning at 100°C to 110°C for 5 minutes to ensure no contaminants remain. The acid pickling step uses 98% concentrated sulfuric acid, with the time strictly controlled to 2 seconds to avoid excessive corrosion. Finally, a potassium hydroxide solution is used for deacidification cleaning at a temperature controlled between 70°C and 90°C for 3 minutes to ensure complete acid neutralization. After wire drawing, the operator inspects the surface texture using a microscope (500x magnification), a depth gauge, and a gloss meter. The microscope is used to check the texture depth and uniformity, the depth gauge ensures consistent texture depth, and the gloss meter measures surface gloss to ensure the surface finish meets predetermined standards. If inconsistencies in texture depth or gloss levels do not meet standards, the operator finely adjusts each texture by changing the crane speed, feed rate, and drawing force to ensure consistency and high quality in the final result.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0075] 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 it. 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 spirit and scope of the technical solutions of the present invention.

Claims

1. A fine brushing and texture treatment process for a velvet gold surface, characterized in that, The process includes the following steps: S1. After the velvet gold blank is molded, it is cleaned with an ultrasonic cleaning device at a temperature range of 60°C to 80°C for 5 to 10 minutes. During the cleaning process, a dewaxing agent is used to remove the surface wax layer and attached impurities. Subsequently, a steam spray cleaning device is used to further clean the surface of the blank at a temperature of 90°C to 120°C to remove residual impurities from the cleaning process. S2, High-temperature pickling and deacidification cleaning: The cleaned billet bottom undergoes high-temperature pickling using concentrated sulfuric acid at a temperature of 260°C to 300°C for 1 to 3 seconds. Then, the pickled billet bottom is immersed in a potassium hydroxide solution for 1 to 5 minutes at a temperature of 60°C to 100°C to ensure complete neutralization of the acid. Finally, it is rinsed with clean water for 3 to 5 minutes at a flow rate of 2L / min to ensure no acid residue remains on the surface. S3, Wire drawing process preparation: Fix the high-hardness tungsten steel needle on the crane, adjust the crane speed to the lowest setting to ensure the stability and precision of the wire drawing process; use clamps to fix the velvet gold blank base to ensure the stability of the blank base during the wire drawing process; S4, Fine Wire Drawing Operation: During fine wire drawing, the operator stabilizes the bottom of the velvet gold billet with their left hand to ensure stability during the drawing process, and precisely controls the speed and position of the crane with their right hand to adjust the feed rate and direction of the tungsten carbide needle, ensuring the accuracy of the wire drawing. A high-hardness tungsten carbide needle is used to pull vertically from above the billet bottom surface, with the wire drawing force controlled between 30N and 50N. The pulling force of each wire is monitored in real time by a high-precision force sensor, and the monitored force data is transmitted to the control system. The control system receives the force data from the sensor in real time and compares it with a preset standard. If the sensor detects a deviation in the wire drawing force, the control system automatically adjusts the crane speed or the feed rate of the tungsten carbide needle based on the feedback force data to compensate for fluctuations in the wire drawing force and ensure consistent force applied to each wire. During the wire drawing process, a guide tool is used to guide the tungsten carbide needle to slide evenly along the billet bottom surface. S5, Post-treatment and cleaning: After the wire drawing is completed, ultrasonic cleaning is first performed at a temperature of 60°C to 80°C for 10 minutes with a cleaning agent concentration of 0.5%. Then, steam cleaning is performed at a temperature of 90°C to 120°C, followed by high-temperature acid washing at 260°C to 300°C for 1 to 3 seconds. Subsequently, potassium hydroxide solution is used for acid removal cleaning at a temperature of 60°C to 100°C for 1 to 5 minutes. Finally, clean water is used for rinsing at a flow rate of 2L / min for 3 to 5 minutes.

2. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, Ultrasonic cleaning devices use ultrasonic waves with frequencies ranging from 20kHz to 40kHz.

3. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, The concentrated sulfuric acid used in the pickling process has a concentration of 98% or higher.

4. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, The rinsing process uses a constant water flow of 2L / min and a temperature control system to maintain the water temperature between 20°C and 30°C.

5. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, During the wire drawing process, the feed rate of the tungsten carbide needle is 0.5 to 2 mm / s.

6. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, The force sensor has an accuracy of ±0.1N.

7. The fine brushing and texture treatment process for the velvet gold surface as described in claim 1, characterized in that, The guiding tool is a guide rail, guide groove, or guide clamp.

8. The fine brushing and texture treatment process for the velvet gold surface as described in claim 5, characterized in that, The wire drawing effect was inspected using a microscope, depth gauge, and gloss meter.

9. The fine brushing and texture treatment process for velvet gold surface as described in claim 1, characterized in that, The pH value of the clean water used in the cleaning process is 7.

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