Analysis of the working principle of the two major cleaning equipment of plasma cleaning machine and ultrasonic cleaning machine:
1. Analysis of working principle of ultrasonic cleaning machine:
Ultrasound is a sound wave with a frequency higher than 20000 Hz. It has good directionality, strong penetrating ability, and is easy to obtain concentrated sound energy. It spreads far in the water and can be used for distance measurement, speed measurement, cleaning, welding, stone crushing, sterilization and disinfection. Wait. There are many applications in medicine, military, industry, and agriculture. Ultrasound gets its name because its lower frequency limit is approximately equal to the upper limit of human hearing.
The principle of the ultrasonic cleaning machine is mainly to convert the sound energy of the power ultrasonic frequency source into mechanical vibration through the transducer, and radiate the ultrasonic wave to the cleaning liquid in the tank through the cleaning tank wall. Due to the ultrasonic radiation, the microbubbles in the liquid in the tank can keep vibrating under the action of sound waves. Destroy the adsorption of the dirt and the surface of the cleaning part, cause the fatigue damage of the dirt layer and be dismissed, and the vibration of the gas bubble will scrub the solid surface.

Ultrasonic waves propagate in the liquid, causing the liquid and the cleaning tank to vibrate together at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequency. This vibration frequency is the sound wave frequency, so people hear the buzzing sound. With the continuous development of the cleaning industry, more and more industries and enterprises have used ultrasonic cleaning machines.
For the principle of ultrasonic cleaning machine, the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium—the cleaning solvent. The flow of liquid produces tens of thousands of tiny bubbles with a diameter of 50-500μm, and the tiny bubbles existing in the liquid vibrate under the action of the sound field. These bubbles form and grow in the negative pressure zone where the ultrasonic wave propagates longitudinally. In the positive pressure zone, when the sound pressure reaches a certain value, the bubbles increase rapidly and then suddenly close. And when the bubble is closed, a shock wave is generated, and thousands of atmospheres are generated around it, destroying insoluble dirt and dispersing them in the cleaning liquid. When the group particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified and solid Particles and separation, so as to achieve the purpose of cleaning parts purification. In this process known as the "cavitation" effect, the closed bubble can form a high temperature of several hundred degrees and an instantaneous high pressure of more than 1,000 atmospheres.
The advantages of the ultrasonic cleaning machine are: the ultrasonic cleaning effect is good and the operation is simple. The sound that people hear is a sound wave signal with a frequency of 20-20000 Hz. The sound wave above 20000 Hz is called an ultrasonic wave. The transmission of the sound wave propagates longitudinally according to a sinusoidal curve, producing a large number of small bubbles. One reason is that partial tensile stress occurs in the liquid to form negative pressure. The decrease in pressure makes the gas originally dissolved in the liquid supersaturate and escape from the liquid and become small bubbles; the other reason is that the strong tensile stress tears the liquid apart. "A void is called cavitation.
Ultrasonic cleaning machines are widely used in the surface spray treatment industry, machinery industry, electronics industry, medical industry, semiconductor industry, watch jewelry industry, optical industry, textile printing and dyeing industry. For other industries, the application of ultrasonic cleaning machine is as follows:
1. Surface spraying treatment industry: (cleaning attachments: oil, mechanical cuttings, abrasives, dust, polishing wax) before electroplating, removing carbon deposits, removing oxide scales, removing polishing paste, removing oil and rust, cleaning before ion plating, Phosphating treatment, surface activation treatment of metal workpieces, etc. Stainless steel polished products, stainless steel knives, tableware, knives, locks, lighting, hand decorations before spraying, cleaning before electroplating.
2. Machinery industry: (cleaning attachments: cutting oil, abrasive particles, iron filings, dust, fingerprints) removal of anti-rust grease; cleaning of measuring tools; degreasing and derusting of mechanical parts; engines, engine parts, gearboxes , Shock absorbers, bearings, nozzles, cylinders, valve bodies, carburetors and automotive parts and chassis before degreasing, rust removal, and cleaning before phosphating; dredging and cleaning of filters, piston parts, filters, etc. Precision mechanical parts, compressor parts, camera parts, bearings, hardware parts, molds, especially in the railway industry, are very suitable for the degreasing and decontamination of air conditioners in train cars, and the rust prevention, rust removal and degreasing of various parts of the train head.