Shanghai Bilang Ultrasonic Application in Surface Cleaning of Pre-plated Parts.
Ultrasonic cleaning machine ultrasonic cleaning equipment is a cleaning technology developed in recent years. It has been widely used in the production of electroplating power for medical instruments and electroplating tools. Ultrasonic cleaning mainly uses shock waves and microjets generated by ultrasonic cavitation effects. The surface forms a shearing effect, so that the dirt attached to the surface of the part is removed layer by layer. The high-speed micro-jet generated by the ultrasonic cavitation at the interface between the solid and the liquid can enhance the stirring effect and accelerate the dissolution of the soluble dirt until the substrate is completely cleaned. until.
Ultrasonic cleaning of the substrate before electroplating can remove oxides and oil films that affect plating, so that the bond between the substrate and the coating is better, and the quality of the plated parts is improved. Huo Yuxiang et al. studied the role of ultrasonic cleaning in the pretreatment of composite electroplated diamond drill bits. The water-based cleaning solution trichloroethylene was used as the ultrasonic cleaning solution, and ultrasonic cleaning was performed with ultrasonic waves of 22 to 23 kHz. The experimental results show that The surface of the drill bit that has been ultrasonically cleaned has a small wet contact angle and minimal dirt residue. The impurity residue of the parts cleaned by the ultrasonic acid pickling process is reduced by 0.2% or less. Liu Xiaodong et al. used a water-based cleaning solution consisting of OP emulsifier, 6501 cleaning agent, etc., ultrasonic cleaning of the composite electroplated diamond bit substrate at a sound intensity of 0.03 W/cm 2 at room temperature for 2 min. The experimental results showed that the ultrasonic cleaning was performed before the composite plating. The combination of the bit base and the deposited particles is improved, and the service life of the composite electroplated diamond bit can be improved. Wang Hongkui's research results show that after the ultrasonic cleaning of the plated parts with OP emulsifier cleaning agent, the pollutants in the deep curve of the product are completely removed, and the surface scratches are avoided. After plating 18K or 24K gold, the pattern is guaranteed. Sharpness and consistency.
The effects of frequency, temperature and time of ultrasonic cleaning ultrasonic cleaning machine on the corrosion resistance of tin-plated passivation film were studied. The experimental results show that the coating has the worst corrosion resistance when ultrasonic cleaning is not used. The ultrasonic cleaning process parameter f=59kHz, θ =35～45°C, t=10～15s, the microscopic surface of the tin plate is even and flat, the corrosion resistance is obviously improved, and the ultrasonic cleaning effect is obvious; BogdanNiemczewski studied the concentration of water-based diene cleaning solution on the ultrasonic cavitation intensity. Influence, the experimental results show that under the condition of cleaning θ of 60 °C, the cavitation intensity of 4%～10% Na2CO3, Na2SiO3·5H2O and Na3PO4·12H2O cleaning solution is the largest, and the ultrasonic cleaning effect is the best. Ultrasonic power, frequency and sound field distribution will affect the ultrasonic cleaning effect. In ultrasonic cleaning, different frequencies of ultrasonic waves show different cleaning characteristics, low frequency is good for large dirt and high intensity cleaning, while high frequency is Conducive to the cleaning of gaps, gaps and deep holes, so in practical applications, ultrasonic cleaning parameters are selected according to the degree of contamination and the precision of the parts.
Shanghai Billion Instrument Co., Ltd. is a privately-owned enterprise specializing in the production and processing of laboratory instruments, laboratory equipment, biological instruments, glass instruments, teaching instruments, etc., focusing on ultrasonic cleaners, benchtop ultrasonic cleaners, laboratory ultrasonic cleaners, and CNC ultrasonic cleaning. Machine development and production.
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