众所周知，人们所听到的声音是频率20Hz~20000Hz的声波信号，高于20000Hz的声波称为超声波，声波的传递依照正弦曲线纵向传播，即一层强一层弱，依次传递，当弱的声波信号作用于液体中时，会对液体产生一定的负压，使液体内形成许许多多微小的气泡，而当强的声波信号作用于液体时，则会对液体产生一定的正压，因而，液体中形成的微小气泡被压碎。经研究证明：超声波作用于液体中时，液体中每个气泡的破裂会产生能极大的冲击波，相当于瞬间产生的高温和高达上千个大气压，这种现象被称之为“空化效应”，超声波淸洗正是应用液体中气泡破裂所产生的冲击波来达到淸洗和冲刷工件内外表面的作用。

　　As is well known, the sound that people hear is a sound wave signal with a frequency of 20Hz~20000Hz, and the sound waves above 20000Hz are called ultrasonic waves. The transmission of sound waves follows a sine curve longitudinal propagation, that is, one layer strong and one layer weak, transmitted in sequence. When a weak sound wave signal acts on a liquid, it will generate a certain negative pressure on the liquid, causing many small bubbles to form inside the liquid. When a strong sound wave signal acts on a liquid, it will generate a certain positive pressure on the liquid, thus crushing the small bubbles formed in the liquid. It has been proven through research that when ultrasound is applied to a liquid, the rupture of each bubble in the liquid produces the strongest shock wave, equivalent to instantaneous high temperature and up to thousands of atmospheres of pressure. This phenomenon is called the "cavitation effect", and ultrasonic cleaning is the use of the shock wave generated by the rupture of bubbles in the liquid to achieve the purpose of cleaning and flushing the inner and outer surfaces of the workpiece.

　　超声波可以分为三种，即次声波、声波、超声波。次声波的频率为20Hz以下，声波的频率为20Hz~20kHz，超声波的频率则为20kHz以上。其中次声波和超卢波一般人耳是听不到的。超卢波由于频率高、波长短，因而传播的方向性好、穿透能力强。

　　Ultrasonic waves can be divided into three types, namely infrasound waves, sound waves, and ultrasonic waves. The frequency of infrasound waves is below 20Hz, the frequency of sound waves is between 20Hz and 20kHz, and the frequency of ultrasonic waves is above 20kHz. Among them, infrasound waves and ultrasonic waves are generally inaudible to the human ear. Due to its high frequency and short wavelength, ultrasonic waves have good directionality and strong penetration ability.

　　超声波淸洗机原理主要是将换能器，将功率超声频源的声能，并且要转换成机械振动，通过淸洗槽壁使之将槽子中的淸洗液辐射到超声波。由于受到辐射的超声波，使之槽内液体中的微气泡能够在声波的作用下从而保持振动。

　　The principle of ultrasonic cleaning machine is mainly to convert the sound energy of the power ultrasonic frequency source into mechanical vibration through the transducer, and to radiate the cleaning solution in the tank to ultrasonic waves through the cleaning tank wall. Due to the radiation of ultrasonic waves, microbubbles in the liquid inside the tank can maintain vibration under the action of sound waves.

　　当声压或者声强受到压力到达一定程度时候，气泡就会迅速膨胀，然后又突然闭合。在这段过程中，气泡闭合的瞬间产生冲击波，使气泡周围产生1012Pa~1013Pa的压力，这种超声波气化所产生的巨大压力能破坏不溶性污物而使它们分化于溶液中。

　　When the sound pressure or intensity reaches a certain level of pressure, bubbles will rapidly expand and then suddenly close. During this process, a shock wave is generated at the moment when the bubble closes, causing a pressure of 1012 Pa to 1013 Pa around the bubble. The enormous pressure generated by ultrasonic vaporization can destroy insoluble pollutants and cause them to differentiate into the solution.

　　超声波一方面破坏污物与淸洗件表面的吸附，另一方面能引起污物层的疲劳破坏而被剥离，气体型气泡的振动对固体表面进行擦洗，污层一旦有缝可钻，气泡立即“钻入”振动使污层脱落，由于空化作用，两种液体在界面迅速分散而乳化，当固体粒子被油污裹着而粘附在淸洗件表面时，油被乳化，固体粒子自行脱落，超声在淸洗液中传播时会产生正负交变的声压，形成射流，冲击清洗件，同时由于非线性效应会产生声流和微声流，而超声空化在固体和液体界面会产生高速的微射流，所有这些作用，能够破坏污物，除去或削弱边界污层，增加搅拌、扩散作用，加速可溶性污物的溶解，强化化学淸洗剂的淸洗作用。

　　On the one hand, ultrasound destroys the adsorption between dirt and the surface of the cleaning part, and on the other hand, it can cause fatigue damage and detachment of the dirt layer. The vibration of gas bubbles cleans the solid surface. Once there is a gap in the dirt layer that can be drilled, the bubbles immediately "drill in" and vibrate to make the dirt layer fall off. Due to cavitation, the two liquids quickly disperse and emulsify at the interface. When solid particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified and the solid particles fall off on their own. When ultrasound propagates in the cleaning solution, it generates positive and negative alternating sound pressure, forming a jet that impacts the cleaning part. At the same time, due to nonlinear effects, it produces sound flow and micro sound flow. Ultrasonic cavitation produces high-speed micro jet at the interface between solid and liquid. All of these functions can destroy pollutants, remove or weaken boundary pollution layers, increase stirring and diffusion effects, Accelerate the dissolution of soluble pollutants and enhance the cleaning effect of chemical cleaning agents.

　　由此可见，凡是液体能浸到且声场存在的地方都有淸洗作用，其特点适用于表面形状非常复杂的零件的淸洗。尤其是采用这一技术后，可减少化学溶剂的用量，从而大大降低环境污染。

　　From this, it can be seen that wherever a liquid can penetrate and a sound field exists, there is a cleaning effect, which is suitable for cleaning parts with very complex surface shapes. Especially after adopting this technology, the amount of chemical solvents used can be reduced, greatly reducing environmental pollution.

　　超声波清洗机使用注意事项

　　Precautions for using ultrasonic cleaning machine

　　1、超声波淸洗机电源及电热器电源必须有良好接地装置。

　　1. The power supply of ultrasonic cleaning machine and electric heater must have a good grounding device.

　　2、超声波清洗机严禁无清洗液开机，即清洗缸没有加一定数量的淸洗液，不得合超声波开关。

　　2. It is strictly prohibited to start the ultrasonic cleaning machine without cleaning solution, that is, if the cleaning tank has not been filled with a certain amount of cleaning solution, the ultrasonic switch must not be turned on.

　　3、有加热设备的淸洗设备严禁无液时打开加热开关。

　　3. Cleaning equipment with heating devices is strictly prohibited from turning on the heating switch when there is no liquid.

　　4、禁止用重物(铁件)撞击淸洗缸缸底，以免能童转换器晶片受损。

　　4. Do not hit the bottom of the cleaning tank with heavy objects (iron parts) to prevent damage to the converter chip.

　　5、超声波发生器电源应单独使用一路220V/50Hz电源并配装2000W以上稳压器。

　　5. The ultrasonic generator power supply should use a separate 220V/50Hz power supply and be equipped with a voltage regulator of 2000W or above.

　　6、淸洗缸缸底要定期冲洗，不得有过多的杂物或污垢。

　　6. The bottom of the cleaning tank should be regularly flushed to prevent excessive debris or dirt.

　　7、每次换新液时，待超声波起动后，方可洗件。

　　7. When changing the liquid each time, wait for the ultrasonic wave to start before washing the parts.

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