The sound heard by people is the acoustic signal with a frequency of 20-20000 Hz. The sound wave higher than 20000 Hz is called ultrasonic wave. The transmission of sound wave propagates according to the longitudinal direction of the sinusoid, that is, one layer is strong and weak, and transmitted in turn, when the weak acoustic signal is transmitted. When it acts on a liquid, it will have a certain negative pressure on the liquid, that is, the liquid volume will increase, the molecular voids in the liquid will increase, and many tiny bubbles will form, and when a strong acoustic signal acts on the liquid, it will be liquid. A certain positive pressure is generated, that is, the volume of the liquid is reduced by compression, and the minute bubbles formed in the liquid are crushed.
Studies have shown that when ultrasonic waves act on a liquid, the rupture of each bubble in the liquid will produce a shock wave with a great energy, which is equivalent to instantaneously generating several hundred degrees of high temperature and up to thousands of atmospheres. This phenomenon is called "empty". "Analysis", ultrasonic cleaning is the use of shock waves generated by the bubble burst in the liquid to achieve the role of cleaning and flushing the inner and outer surfaces of the workpiece.
To produce strong cavitation, there must be a core. At the boundary between the solid particles and the liquid, there are often gaps or bubbles generated at the cracks, which can be used as the core, and the surface of the oil film or the fine metal powder adhered to it is obviously the source of the cavitation core. If the intensity of the ultrasonic waves is quite large, a cavitation explosion occurs directly on the surface of the solid matter. The extreme, at the same time, instantaneous static hydraulic pressure caused by this explosion causes the attached particles to detach from the solid surface, and the continuous flow caused by the ultrasonic vibration quickly removes the fine particles. When the surface tension at the interface of the two objects is lowered, the wetting of the liquid is enhanced, thereby promoting the elimination of the foreign particles.
In order to clean large dirt particles on the parts, it is best to use a lower frequency ultrasonic cleaning machine. The high frequency ultrasonic cleaning machine is mainly used to clean small parts. The small parts require a small amplitude to clean, but it needs a lot. The energy to remove dirt.
Skin Analyzer:
Skin Observed System 2.0, the second-generation multifunctional skin analyzer, is a high-tech professional instrument which can analyze skin condition scientifically and objectively based on skin morphology theory. Through unique optics principle, the analyzer adopts integrated graphics and images analysis technique to analyze and interpret the users` skin comprehensively, providing reliable basis for skin beauty, conditioning and treatment. Compared to the first-generation products (products currently on the market), the newest second-generation analyzer has more convenient and compact hardware design.
For the first time, the analyzer adopts no-button sensor design, which combines technology with practicability; the system has simple and decent software interface, powerful archives management function, perfect combination of test items and products, and provides multilingual and a variety of professional versions.
Skin Analyzer
Skin Analyzer,Face Skin Analyzer,Skin Analyzer Magnifer,Skin Analyzer Machine
Shenzhen Guangyang Zhongkang Technology Co., Ltd , https://www.lighttherapymachine.com