Treatment method for surface chromatic aberration after surface treatment of VCR connector assembly

Abstract

The invention discloses a treatment method for surface chromatic aberration after surface treatment of a VCR connector assembly. The treatment method comprises the following steps that S1, the connector assembly is cleaned through ultrasonic pure water; s2, dry compressed air is used for conducting blow-drying treatment on the surface of the connector assembly; s3, the connector assembly is soaked in a deoxidizing agent; s4, the connector assembly is cleaned with pure water; s5, the connector assembly is dried; and S6, sealing and packaging. The invention provides a treatment method for surface chromatic aberration after surface treatment of a VCR joint assembly, which can solve the problem of chromatic aberration caused by oxidation blackening of a silver-plated internal thread after surface treatment of the VCR assembly, and reduce product scrapping caused by poor product appearance and product scrapping caused by rewelding after the VCR joint is cut off.

Description

Technical Field

[0001] The invention relates to the field of semiconductor technology, and in particular to a method for treating surface color difference of a VCR joint component after surface treatment. Background Art

[0002] In recent years, with the continuous development of intelligent manufacturing, the rise of the semiconductor industry has also been accelerated. There are many joint connection methods in semiconductor equipment, among which VCR joint connection method is widely used. It is mainly used in pipeline connections of special gases or high-purity gases, and has high sealing performance. In the manufacture of semiconductor cavities, it is often necessary to weld some VCR components to the cavity in advance, including joints and internal thread nuts.

[0003] For example, publication number "CN216045953U" discloses "a zero leakage VCR joint", including an internally threaded nut, an externally threaded nut, a connecting pipe and a gasket, wherein the inner side wall of the front end of the internally threaded nut is provided with a built-in thread, the inner side wall of the rear end of the internally threaded nut is provided with an anti-friction bearing, the anti-friction bearing is connected to an anti-friction part, the outer side wall of the externally threaded nut is fixedly connected to the externally threaded nut, the outer side wall of the externally threaded nut is provided with an external thread, and the inner side wall of the externally threaded nut is provided with a second anti-friction bearing.

[0004] However, in actual applications, since most semiconductor cavities need to undergo overall electrolytic polishing and chemical cleaning processes, these processes will cause the silver plating layer of the internal threaded nut in the VCR component to oxidize and turn black. Summary of the invention

[0005] In view of the problem of black oxidation of the threaded part of the joint assembly in the prior art mentioned in the background technology, the present invention provides a method for dealing with the surface color difference of a VCR joint assembly after surface treatment, which can solve the color difference problem caused by black oxidation of the silver-plated internal thread of the VCR assembly after surface treatment, reduce the product scrapping due to poor product appearance and the product scrapping due to poor precision caused by re-welding after the VCR joint is cut off.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions.

[0007] A method for treating the surface color difference of a VCR joint component after surface treatment, comprising the following steps: S1. Clean the joint assembly with ultrasonic pure water; S2. Use dry compressed air to dry the surface of the joint assembly; S3, immersing the joint assembly in a deoxidizing agent; S4. Clean the joint assembly with pure water; S5, drying the joint assembly; S6. Sealed packaging.

[0008] In the present application, ultrasonic pure water cleaning is used to clean the impurities on the joint assembly. During the ultrasonic pure water cleaning process, the time and frequency need to be controlled. Too long time or too high frequency will corrode the silver-plated layer of the internal thread, affecting the service life of the product. At the same time, the water temperature during the ultrasonic pure water cleaning process is required to be controlled between 25°C and 35°C. The joint assembly after ultrasonic cleaning is then blown dry with compressed air, where the compressed air needs to be kept dry to ensure that the surface of the joint assembly can be kept dry after the drying operation. During the drying operation, not only can the moisture on the surface of the product be cleaned, but also the dust that was not cleaned by the ultrasonic wave can be cleaned again. The joint assembly after drying is then placed in a deoxidizer for immersion until the surface of the silver-plated nut is visually restored to brightness and the deoxidation treatment is completed. After that, the joint assembly needs to be cleaned. The purpose of pure water cleaning is to remove the liquid residue of the reducing agent in the internal thread groove of the product, and the cleaned surface is repeatedly rinsed many times. The joint assembly is then dried to ensure dryness of the joint assembly, and the silver-plated layer on the surface of the joint assembly needs to be observed after drying. If the inspection fails, it will be returned to the first step for reprocessing, and if it passes the inspection, the next step will be performed. Finally, the joint assembly is sealed to prevent oxidation and discoloration during subsequent transportation.

[0009] Preferably, in step S1, segmented cleaning is used, and the connector assembly is first cleaned at a low frequency, and then at a high frequency. By segmented cleaning, the corrosion effect on the silver-plated layer is avoided while ensuring the cleaning efficiency and cleaning quality.

[0010] Preferably, in step S2, the trachea blowing head generating compressed air is kept facing the joint assembly while performing angular cyclic swinging. By adjusting the trachea blowing head at different angles, the threaded hole can be purged at different positions to avoid purging dead angles, and the water droplets on the threaded hole can be evenly purged by cyclic swinging within a specified angle.

[0011] Preferably, the angular swing range of the air pipe blowing head relative to the axis of the joint assembly is between ±60°.

[0012] Preferably, in step S2, the joint assembly includes a threaded hole, and the trachea blowing head that generates compressed air is tilted toward one side of the joint assembly, and the air outlet direction of the trachea blowing head is tangent to the inner wall of the threaded hole. By tilting the trachea blowing head downward and tangent to the edge of the threaded hole, the airflow can spiral down along the inner circle of the threaded hole during the blowing process, and thus can better fit the shape of the threaded hole, and the water droplets attached to the tooth groove can move along the extension direction of the tooth groove. During the movement of the water droplets, the water droplets will be evenly dispersed and attached to the tooth groove, reducing the volume of the entire water droplets, thereby improving the evaporation efficiency of the water droplets during the blowing process, and performing rapid air drying. Furthermore, since the blowing is performed at an inclined tangent, the airflow direction is the same as the extension direction of the tooth groove, thereby avoiding the generation of a blowing dead angle and improving the blowing quality.

[0013] Preferably, in step S3, the joint assembly is repeatedly immersed in the deoxidant for multiple times. The deoxidation efficiency of the joint assembly can be improved by repeated immersion.

[0014] Preferably, in step S4, the joint assembly is placed in the rinse cup, the rinse cup includes a bottom water outlet, the axis of the joint assembly coincides with the axis of the rinse cup and the bottom rinse hole, the outlet direction of the outlet pipe for producing pure water is offset from the axis of the rinse cup, and a vortex is generated at the axis of the rinse cup during the water outlet process. The joint assembly is placed in the rinse cup, and since the threaded holes in the joint assembly are all cylindrical in shape, the axis of the threaded hole is aligned with the axis of the rinse cup and the axis of the bottom water outlet. After the axis of the rinse cup is offset by the outlet pipe, a vortex can be generated in the rinse cup, and the axis of the vortex will coincide with the axis of the threaded hole. At the same time, since the rinse cup has a bottom water outlet, the water flow in the vortex rotates downward, so that the impurities in the threaded hole can be efficiently cleaned and removed, the cleaning efficiency is improved by the flowing water flow, and it can be discharged from the bottom water outlet in time, thereby avoiding secondary pollution and ensuring the tilting quality.

[0015] Preferably, the water outlet speed of the bottom water outlet hole is the same as the water outlet speed of the water outlet pipe. The water outlet speed of the water outlet pipe is controlled to be the same as the water outlet speed of the bottom water outlet hole, so that the water flow in the rinse cup is always maintained at a water volume that can generate a vortex on the threaded hole, and the range of the vortex generation can cover the threaded hole in the axial direction.

[0016] Preferably, in step S5, the joint assembly is placed in an oven at room temperature, heated to a specified stable temperature, and then kept warm. After the temperature is cooled to room temperature, the joint assembly is taken out of the oven. By reasonably controlling the temperature, the accuracy of the joint assembly can be ensured and damage to the joint assembly can be avoided.

[0017] Preferably, in step S6, the joint assembly is covered with a protective end cap, and the joint assembly is wrapped with a wrapping film and a desiccant. In order to prevent the treated joint assembly from being contaminated and discolored again during subsequent shipment and transportation, it is necessary to package it well, cover the joint of the sealing assembly with a plastic protective end cap, and wrap it with a wrapping film and a desiccant to prevent water vapor and other pollutants from entering.

[0018] The beneficial effects of the present invention are as follows: (1) It can solve the color difference problem caused by oxidation and blackening of the silver-plated internal threads of the VCR components, reduce the scrapping of products due to poor product appearance and the scrapping of products due to poor precision caused by re-welding after the VCR joint is cut off; (2) It can improve the efficiency of the drying process and avoid the occurrence of drying dead corners; (3) It can speed up the cleaning quality during flushing and quickly discharge the water flow containing cleaning impurities to avoid secondary pollution. The fast-flowing water flow can also improve the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a flow chart of the present invention.

[0020] Figure 2 It is a graph of ultrasonic frequency changes in step S1 of the present invention.

[0021] Figure 3 It is a structural schematic diagram of step S2 in the present invention.

[0022] Figure 4 It is a drying temperature curve diagram in step S5 of the present invention.

[0023] Figure 5 It is a structural schematic diagram of Example 2.

[0024] Figure 6 It is a structural schematic diagram of Example 3.

[0025] In the figure: 1 connector assembly, 11 threaded holes; 2. Air pipe blowing head; 3 flushing cup, 31 bottom water outlet; 4 water outlet pipe. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1: In recent years, with the continuous development of intelligent manufacturing, the rise of the semiconductor industry has also been accelerated. There are many joint connection methods in semiconductor equipment, among which VCR joint connection method is widely used. It is mainly used in pipeline connections of special gases or high-purity gases, and has high sealing performance. VCR generally consists of five sets: Short-Gland (short joint) + Female-Nut (internal thread nut) + Gasket (gasket) + Long-Gland (long joint) + Male-Nut (external thread nut), among which the internal thread nut in the VCR component is a surface silver-plated part. The purpose of silver plating is to prevent the thread from locking in the threaded connection. In the manufacture of semiconductor cavities, it is often necessary to weld some VCR components to the cavity in advance, including joints and internal thread nuts; since most semiconductor cavities need to undergo overall electrolytic polishing and chemical cleaning, these processes will cause the silver-plated layer of the internal thread nut in the VCR component to oxidize and blacken, because silver has been contaminated by chemicals in the air, and improper protection is very easy to oxidize and blacken. These oxidation phenomena cause the color difference of the VCR connector to be very obvious, affecting the overall appearance, directly affecting the acceptance of the product, causing the product to be scrapped, and causing direct economic losses. The method of the present invention can solve the color difference problem without affecting the accuracy of the main body and its own sealing performance, making the product appearance beautiful.

[0028] There is no repair method for VCR connector color difference in current technology, and the main method is to cut it off and scrap it. Although directly cutting the VCR connector is the fastest solution, because semiconductor cavities are often high-precision products, re-welding after cutting will cause product precision to exceed the tolerance, directly affecting the use of the product and causing the overall usability of the product to be scrapped. Repairing VCR connector color difference is the most economical repair method. After repair, the color difference problem can be directly solved without affecting the subsequent sealing of the product.

[0029] like Figure 1 As shown, a method for treating the surface color difference of a VCR joint component after surface treatment comprises the following steps: S1, cleaning the joint component 1 with ultrasonic pure water; S2. Use dry compressed air to dry the surface of the joint assembly; S3, immersing the joint assembly in a deoxidizing agent; S4. Clean the joint assembly with pure water; S5, drying the joint assembly; S6. Sealed packaging.

[0030] In this embodiment, ultrasonic pure water cleaning is used to clean the impurities on the joint assembly. During the ultrasonic pure water cleaning process, the time and frequency need to be controlled. Too long a time or too high a frequency will corrode the silver-plated layer of the internal thread, affecting the service life of the product. At the same time, the water temperature during the ultrasonic pure water cleaning process is required to be controlled between 25°C and 35°C. The joint assembly after ultrasonic cleaning is then blown dry with compressed air, wherein the compressed air needs to be kept dry, so as to ensure that the surface of the joint assembly can be kept dry after the drying operation. During the drying operation, not only can the moisture on the surface of the product be cleaned, but also the dust that has not been cleaned by the ultrasonic wave can be cleaned again. The joint assembly after drying is then placed in a deoxidizer for immersion until the surface of the silver-plated nut is visually restored to brightness and the deoxidation treatment is completed. After that, the joint assembly needs to be cleaned. The purpose of pure water cleaning is to remove the liquid residue of the reducing agent in the internal thread groove of the product, and the cleaned surface is repeatedly rinsed many times. The joint assembly is then dried to ensure dryness of the joint assembly, and the silver-plated layer on the surface of the joint assembly needs to be observed after drying. If the inspection fails, it will be returned to the first step for reprocessing, and if it passes the inspection, the next step will be performed. Finally, the joint assembly is sealed to prevent oxidation and discoloration during subsequent transportation.

[0031] In step S1, segmented cleaning is used, and the connector assembly is first cleaned at a low frequency, and then cleaned at a high frequency. By segmented cleaning, the corrosion effect on the silver-plated layer is avoided while ensuring the cleaning efficiency and cleaning quality.

[0032] In step S2, the trachea blowing head 2 generating compressed air is kept facing the joint assembly while performing angular cyclic swinging. By adjusting the trachea blowing head 2 at different angles, the threaded hole 11 can be purged at different positions to avoid purging dead angles, and the cyclic swinging within the specified angle can make the water droplets on the threaded hole 11 be evenly purged.

[0033] The angular swing range of the air pipe blowing head 2 relative to the axis of the joint assembly is between ±60°.

[0034] In step S3, the joint assembly is repeatedly immersed in the deoxidizing agent for multiple times. The deoxidizing efficiency of the joint assembly can be improved by repeated immersion.

[0035] In step S5, the joint assembly is placed in an oven at room temperature, heated to a specified stable temperature, and then kept warm. After the temperature is cooled to room temperature, the joint assembly is taken out of the oven. By properly controlling the temperature, the accuracy of the joint assembly can be ensured and damage to the joint assembly can be avoided.

[0036] In step S6, the joint assembly is covered with a protective end cap, and the joint assembly is wrapped with a wrapping film and a desiccant. In order to prevent the treated joint assembly from being contaminated and discolored again during subsequent shipment and transportation, it is necessary to package it well, cover the joint of the sealing assembly with a plastic protective end cap, and wrap it with a wrapping film and a desiccant to prevent water vapor and other pollutants from entering.

[0037] The assembly and working process of the method for treating the surface color difference of the VCR joint assembly after surface treatment in this embodiment are as follows: Step 1: After the surface treatment (mainly electrolytic polishing or chemical cleaning) of the VCR joint assembly is completed, the silver plating layer of the internal thread nut of the VCR assembly is checked under normal indoor lighting, and the VCR joint assembly with obvious color difference is repaired; Step 2: Use ultrasonic pure water to clean the VCR joint components that do not meet the color difference requirements. The water temperature is required to be controlled at 25℃-35℃. The ultrasonic control frequency is controlled as shown in the attached Figure 2 As shown, when the VCR connector assembly is put into the ultrasonic cleaning tank, it is cleaned with ultrasonic pure water at a frequency of 16KHZ for 5 minutes, and then the frequency is increased to 28KHZ for another 5 minutes. The time should be controlled within 10 minutes. Too long time or too high frequency will corrode the silver-plated layer of the internal thread and affect the service life of the product. Therefore, it must be strictly controlled to remove the dust in the gap of the internal thread through ultrasonic pure water cleaning.

[0038] Step 3: Use dry compressed air to blow dry the surface of the product. Blowing dry can not only remove moisture from the surface of the product, but also clean the dust that was not removed by ultrasonic wave. The compressed air blowing time is 5 minutes, the compressed air pressure is required to be between 0.4Mpa-0.8Mpa, and the blowing angle is between -60° and +60°. Figure 3 As shown, the control angle range ensures that the moisture can be completely blown away and the dust in the corners of the internal threads can be thoroughly cleaned; Step 4: Blow dry and clean the VCR joint components, immerse them in a reducing agent with a certain composition and ratio for deoxidation treatment. During the treatment, the temperature of the treatment liquid needs to be controlled between 35℃-45℃, the ratio of reducing agent to water is 1:1 or 1:1.5, and the treatment time is between 10 seconds and 60 seconds. The immersion treatment can be carried out multiple times, and the treatment time is controlled between 10 seconds and 60 seconds until the surface of the silver-plated nut is visually restored to brightness; Step 5: Wash the product with pure water. The purpose of pure water washing is to remove the liquid residue of the reducing agent in the internal thread groove of the product. Pressurize the pure water for washing, and control the pressure between 0.4Mpa-0.6Mpa. Repeatedly rinse the cleaned surface many times. The advantage of this method is that it saves water and can effectively remove the residual reducing agent. The washing time is controlled between 10 seconds and 20 seconds, and the washing water temperature is between 10℃ and 30℃.

[0039] Step 6: Drying. Drying is done in an oven. The drying temperature is strictly controlled between 80℃ and 100℃. Too high a temperature will affect the product's precision dimensions. The product drying temperature-time curve is as follows: Figure 4 As shown: Generally, it enters the oven at room temperature, heats up from 25℃ to between 80℃-100℃, keeps warm for 2 hours, and cools down to room temperature after 1 hour before exiting the oven; Step 6: Check the color difference of the silver-plated layer on the surface of the VCR connector assembly again. Check the environment or visually check under indoor lamps. If the inspection fails, return to the second step for reprocessing. If the inspection passes, proceed to the next step; Step 7: Packaging. To prevent contamination and discoloration during transportation, the processed VCR components need to be properly packaged. Plastic protective end caps need to be placed on the sealing component joints and wrapped with stretch film and desiccant to prevent moisture and other pollutants from entering.

[0040] Embodiment 2: like Figure 5 As shown, in this embodiment, a method for treating the surface color difference of a VCR connector assembly after surface treatment comprises the following steps: S1. Clean the joint assembly with ultrasonic pure water; S2. Use dry compressed air to dry the surface of the joint assembly; S3, immersing the joint assembly in a deoxidizing agent; S4. Clean the joint assembly with pure water; S5, drying the joint assembly; S6. Sealed packaging.

[0041] In step S2 of the present embodiment, the joint assembly includes a threaded hole 11, and the trachea blowing head 2 that generates compressed air is tilted toward one side of the joint assembly, and the air outlet direction of the trachea blowing head 2 is tangent to the inner wall of the threaded hole 11. By tilting the trachea blowing head 2 downward and tangent to the edge of the threaded hole 11, the airflow can spirally descend along the inner circle of the threaded hole 11 during the blowing process, and thus can better fit the shape of the threaded hole 11, and the water droplets attached to the tooth groove can move along the extension direction of the tooth groove. During the movement of the water droplets, the water droplets will be evenly dispersed and attached to the tooth groove, reducing the volume of the entire water droplets, thereby improving the evaporation efficiency of the water droplets during the blowing process, and performing rapid air drying. Furthermore, since the blowing is performed at an inclined tangent, the airflow direction is the same as the extension direction of the tooth groove, thereby avoiding the generation of a blowing dead angle and improving the blowing quality.

[0042] Further, in this embodiment, ultrasonic pure water cleaning is used to clean the impurities on the joint assembly. During the ultrasonic pure water cleaning process, the time and frequency need to be controlled. Too long a time or too high a frequency will corrode the silver-plated layer of the internal thread, affecting the service life of the product. At the same time, the water temperature during the ultrasonic pure water cleaning process is required to be controlled between 25°C and 35°C. The joint assembly after ultrasonic cleaning is then blown dry with compressed air, wherein the compressed air needs to be kept dry, so as to ensure that the surface of the joint assembly can be kept dry after the drying operation. During the drying operation, not only can the moisture on the surface of the product be cleaned, but also the dust that has not been cleaned by the ultrasonic wave can be cleaned again. The joint assembly after drying is then placed in a deoxidizer for immersion until the surface of the silver-plated nut is visually restored to brightness, and the deoxidation treatment is completed. After that, the joint assembly needs to be cleaned. The purpose of pure water cleaning is to remove the liquid residue of the reducing agent in the internal thread groove of the product, and the cleaned surface is repeatedly rinsed many times. The joint assembly is then dried to ensure dryness of the joint assembly, and the silver-plated layer on the surface of the joint assembly needs to be observed after drying. If the inspection fails, it will be returned to the first step for reprocessing, and if it passes the inspection, the next step will be performed. Finally, the joint assembly is sealed to prevent oxidation and discoloration during subsequent transportation.

[0043] In step S1, segmented cleaning is used, and the connector assembly is first cleaned at a low frequency, and then cleaned at a high frequency. By segmented cleaning, the corrosion effect on the silver-plated layer is avoided while ensuring the cleaning efficiency and cleaning quality.

[0044] In step S3, the joint assembly is repeatedly immersed in the deoxidizing agent for multiple times. The deoxidizing efficiency of the joint assembly can be improved by repeated immersion.

[0045] In step S5, the joint assembly is placed in an oven at room temperature, heated to a specified stable temperature, and then kept warm. After the temperature is cooled to room temperature, the joint assembly is taken out of the oven. By properly controlling the temperature, the accuracy of the joint assembly can be ensured and damage to the joint assembly can be avoided.

[0046] In step S6, the joint assembly is covered with a protective end cap, and the joint assembly is wrapped with a wrapping film and a desiccant. In order to prevent the treated joint assembly from being contaminated and discolored again during subsequent shipment and transportation, it is necessary to package it well, cover the joint of the sealing assembly with a plastic protective end cap, and wrap it with a wrapping film and a desiccant to prevent water vapor and other pollutants from entering.

[0047] Embodiment 3: like Figure 6 As shown, in this embodiment, a method for treating the surface color difference of a VCR connector assembly after surface treatment comprises the following steps: S1. Clean the joint assembly with ultrasonic pure water; S2. Use dry compressed air to dry the surface of the joint assembly; S3, immersing the joint assembly in a deoxidizing agent; S4. Clean the joint assembly with pure water; S5, drying the joint assembly; S6. Sealed packaging.

[0048] In step S4 of the present embodiment, the joint assembly is placed in the rinse cup 3, the rinse cup includes a bottom water outlet 31, the axis of the joint assembly coincides with the axis of the rinse cup and the bottom rinse hole, the outlet direction of the water outlet pipe 4 that produces pure water is offset from the axis of the rinse cup, and a vortex is generated at the axis of the rinse cup during the water outlet process. The joint assembly is placed in the rinse cup, and since the threaded holes 11 in the joint assembly are all cylindrical in shape, the axis of the threaded hole 11 is aligned with the axis of the rinse cup and the axis of the bottom water outlet. After the axis of the rinse cup is offset by the water outlet pipe 4, a vortex can be generated in the rinse cup, and the axis of the vortex will coincide with the axis of the threaded hole 11. At the same time, since the rinse cup has a bottom water outlet, the water flow in the vortex rotates downward, so that the impurities in the threaded hole 11 can be efficiently cleaned and removed, the cleaning efficiency is improved by the flowing water flow, and it can be discharged from the bottom water outlet in time, thereby avoiding secondary pollution and ensuring the tilting quality.

[0049] Furthermore, in this embodiment, the water outlet speed of the bottom water outlet hole 31 is the same as the water outlet speed of the water outlet pipe 4. The water outlet speed of the water outlet pipe 4 is controlled to be the same as the water outlet speed of the bottom water outlet hole, so that the water flow in the washing cup 3 is always maintained at a water volume that can generate a vortex on the threaded hole 11, and the range of the vortex generation can cover the threaded hole 11 in the axial direction.

[0050] Furthermore, in this embodiment, ultrasonic pure water cleaning is used to clean the impurities on the joint assembly. During the ultrasonic pure water cleaning process, the time and frequency need to be controlled. Too long a time or too high a frequency will corrode the silver-plated layer of the internal thread, affecting the service life of the product. At the same time, the water temperature during the ultrasonic pure water cleaning process is required to be controlled between 25°C and 35°C. The joint assembly after ultrasonic cleaning is then blown dry with compressed air, wherein the compressed air needs to be kept dry, so as to ensure that the surface of the joint assembly can be kept dry after the drying operation. During the drying operation, not only can the moisture on the surface of the product be cleaned, but also the dust that has not been cleaned by the ultrasonic wave can be cleaned again. The joint assembly after drying is then placed in a deoxidizer for immersion until the surface of the silver-plated nut is visually restored to brightness, and the deoxidation treatment is completed. After that, the joint assembly needs to be cleaned. The purpose of pure water cleaning is to remove the liquid residue of the reducing agent in the internal thread groove of the product, and the cleaned surface is repeatedly rinsed many times. The joint assembly is then dried to ensure dryness of the joint assembly, and the silver-plated layer on the surface of the joint assembly needs to be observed after drying. If the inspection fails, it will be returned to the first step for reprocessing, and if it passes the inspection, the next step will be performed. Finally, the joint assembly is sealed to prevent oxidation and discoloration during subsequent transportation.

[0051] 2. In step S1, segmented cleaning is used to first perform low-frequency cleaning on the connector assembly and then perform high-frequency cleaning. By segmented cleaning, the corrosion effect on the silver-plated layer is avoided while ensuring the cleaning efficiency and cleaning quality.

[0052] 5. In step S2, the joint assembly includes a threaded hole 11, and the trachea blowing head 2 that generates compressed air is tilted toward one side of the joint assembly, and the air outlet direction of the trachea blowing head 2 is tangent to the inner wall of the threaded hole 11. By tilting the trachea blowing head 2 downward and tangent to the edge of the threaded hole 11, the airflow can spiral down along the inner circle of the threaded hole 11 during the blowing process, and thus can better fit the shape of the threaded hole 11, and the water droplets attached to the tooth groove can move along the extension direction of the tooth groove. During the movement of the water droplets, the water droplets will be evenly dispersed and attached to the tooth groove, reducing the volume of the entire water droplets, thereby improving the evaporation efficiency of the water droplets during the blowing process, and performing rapid air drying. Furthermore, since the blowing is performed at an inclined tangent, the airflow direction is the same as the extension direction of the tooth groove, thereby avoiding the generation of a blowing dead angle and improving the blowing quality.

[0053] 6. In step S3, the joint assembly is repeatedly immersed in the deoxidant for multiple times. The deoxidation efficiency of the joint assembly can be improved by repeated immersion.

[0054] 9. In step S5, the joint assembly is placed in an oven at room temperature, heated to a specified stable temperature, and then kept warm. After the temperature is cooled to room temperature, the joint assembly is taken out of the oven. By properly controlling the temperature, the accuracy of the joint assembly can be ensured and damage to the joint assembly can be avoided.

[0055] 10. In step S6, the joint assembly is covered with a protective end cap, and the joint assembly is wrapped with a wrapping film and a desiccant. The processed joint assembly needs to be properly packaged to prevent contamination and discoloration during subsequent shipment and transportation. The plastic protective end cap needs to be covered on the sealing assembly joint and wrapped with a wrapping film and a desiccant to prevent water vapor and other pollutants from entering.

Claims

1. A method for treating the surface color difference of a VCR joint component after surface treatment, characterized in that: The following steps are included: S1. Clean the joint assembly (1) with ultrasonic pure water; S2. Blow dry the surface of the joint assembly (1) with dry compressed air; S3, immersing the joint assembly (1) in a deoxidizing agent; S4, cleaning the connector assembly (1) with pure water; S5, drying the joint assembly (1); S6. Sealed packaging.

2. According to the method for treating the surface color difference of a VCR joint component after surface treatment as described in claim 1, it is characterized in that: In step S1, segmented cleaning is used, firstly the joint assembly (1) is cleaned at a low frequency, and then at a high frequency.

3. According to the method for treating the surface color difference of a VCR joint component after surface treatment as described in claim 1, it is characterized in that: In step S2, the air pipe blowing head (2) that generates compressed air is kept facing the joint assembly (1) while performing angular cyclic swing.

4. A method for treating the surface color difference of a VCR joint component after surface treatment according to claim 3, characterized in that: The angular swing range of the air pipe blowing head (2) relative to the axis of the joint assembly (1) is between ±60°.

5. According to the method for treating the surface color difference of a VCR joint component after surface treatment as described in claim 1, it is characterized in that: In step S2, the joint assembly (1) includes a threaded hole (11), and the air pipe blowing head (2) that generates compressed air is inclined toward one side of the joint assembly (1), and the air outlet direction of the air pipe blowing head (2) is tangent to the inner wall of the threaded hole (11).

6. The method for treating the surface color difference of a VCR joint component after surface treatment according to claim 1, characterized in that: In step S3, the joint assembly (1) is repeatedly immersed in a deoxidizing agent for multiple times.

7. The method for treating the surface color difference of a VCR joint component after surface treatment according to claim 1, characterized in that: In step S4, the joint assembly (1) is placed in a rinse cup (3), the rinse cup includes a bottom water outlet hole (31), the axis of the joint assembly (1) coincides with the axis of the rinse cup and the bottom rinse hole, and the water outlet direction of the water outlet pipe (4) for generating pure water is offset from the axis of the rinse cup, generating a vortex at the axis of the rinse cup during the water outlet process.

8. A method for treating the surface color difference of a VCR joint component after surface treatment according to claim 7, characterized in that: The water outlet speed of the bottom water outlet hole (31) is the same as the water outlet speed of the water outlet pipe (4).

9. A method for treating the surface color difference of a VCR joint component after surface treatment according to any one of claims 1 to 8, characterized in that: In step S5, the joint assembly (1) is placed in an oven at room temperature, heated to a specified stable temperature, and then kept warm. After the temperature is cooled to room temperature, the joint assembly (1) is taken out of the oven.

10. A method for treating the color difference of a surface of a VCR joint assembly after surface treatment according to any one of claims 1 to 8, characterized in that: In step S6, the connector assembly (1) is covered with a protective end cap, and the connector assembly (1) is wrapped with a wrapping film and a desiccant.

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