Compared with many other cleaning methods, ultrasonic cleaning machines have demonstrated significant superiority. Ultrasonic cleaning machines, especially in specialized and group-oriented manufacturing enterprises, have gradually replaced traditional processes such as immersion cleaning, brush cleaning, pressure rinsing, vibration cleaning and steam cleaning. The high efficiency and high cleanliness of ultrasonic cleaning machines are attributed to the penetrating power and cavitation shock waves generated by their sound waves when propagating in the medium. Therefore, it is very easy to clean components with complex shapes, inner cavities and fine holes thoroughly. For general processes such as degreasing, rust prevention and phosphating, they can be completed in just two or three minutes under the action of ultrasonic waves. The speed of ultrasonic cleaning machines can be several to dozens of times higher than that of traditional methods, and the cleanliness can also reach high standards. This is particularly applicable in many situations where the surface quality of products and production efficiency are highly demanding. It more prominently demonstrates the results that are difficult to achieve or irreplaceable by other processing methods.