Neighborhoods: ultrasonic cleaning related knowledge, the more the better
?The United States produced more than 40 companies specializing in the production of ultrasonic cleaning equipment, more than about 10 famous, Western European countries, the production of cleaning equipment is mainly Britain, France, Germany and Switzerland and other countries. China's ultrasonic cleaning equipment, about 10 major manufacturers, small-scale individual companies countless.
????Foreign manufacturers are very concerned about the chemical cleaning agent supporting the supply and cleaning process consulting services, which is the most lack of domestic manufacturers, the domestic manufacturers to consider the production of ultrasonic cleaning equipment, very few specialized departments engaged in the development of cleaning agents To meet the needs of different cleaning objects. If the ultrasonic cleaning equipment and chemical cleaning agent can be a good combination will get better results, because the main physical mechanism of ultrasonic cleaning is the phenomenon of ultrasonic cavitation, and cavitation strength in addition to the ultrasonic power density, frequency and so on , But also with the cleaning fluid viscosity coefficient, surface tension, vapor pressure and temperature and other parameters. At present, from the perspective of environmental protection requires water-based cleaning agent instead of organic solvents for ultrasonic cleaning, and many domestic manufacturers have not yet been able to adapt to this challenge, but also need a wide range of cooperative development.
Ultrasound is the frequency of more than 20kHz sound, the human ear generally can not hear. Due to historical reasons and operational characteristics, a small number of frequencies below 20 kHz are also included in the application of sound waves. According to custom, ultrasound in the national defense and national economic departments can be divided into two categories, one is to use weak ultrasound to collect information, such as ultrasound nondestructive testing and ultrasound (such as B-ultrasound); the other is With strong ultrasound, use its energy to change the state or performance of the material, such as ultrasonic cleaning, ultrasonic crushing of solids, etc., such applications require the generation of high-power ultrasound, we referred to as power ultrasound. Power ultrasound has been widely used in various sectors of the national economy and in the defense industry, such as industry, agriculture, health care and environmental protection. Ultrasonic cleaning, ultrasonic cleaning, tinning, filtering, drying and drying; ultrasonic welding, ultrasonic processing and ultrasonic grinding, polishing; ultrasonic cleaning, ultrasonic cleaning, Ultrasound therapy and ultrasound surgery. In recent years, power ultrasound has developed many new technologies, such as ultrasound "help" metal forming (such as cold drawn wire), ultrasonic vibration cutting, ultrasonic fatigue testing, ultrasonic suspension, ultrasonic motors and acoustic chemistry. Sonochemistry (Sonochemistry) is the most rapid development in recent years, the new interdisciplinary, there are some industrial applications. It is predicted that it may bring about a change in chemical production.
