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超聲波清洗機在使用時會發(fā)出聲響是壞了嗎？

作者：admin來源：http://sgkthz.com/時間：2021-11-08

超聲波的傳輸是需要介質(zhì)的，這種介質(zhì)一般是水，所以通常我們要在超聲波清洗機的機槽里加水。超聲波清洗機是利用超聲波高頻振蕩對水分子作用來運行的，能量也被水所吸收，因此不會對人產(chǎn)生什么損害。之所以發(fā)出聲音，這聲音并不是超聲波，人是聽不到超聲波的。這還需要超聲波清洗機的原理來解釋：當(dāng)超聲波作用于液體中時，液體中會產(chǎn)生數(shù)以萬計個氣泡，一直爆裂，從而產(chǎn)生能量極大的沖擊波，相當(dāng)于瞬間產(chǎn)生了幾百度的高溫以及高達上千個大氣壓，這種現(xiàn)象稱為“空化作用”，超聲波清洗機利用液體中氣泡爆炸所產(chǎn)生的沖擊波來達到?jīng)_刷和清洗工件隙縫內(nèi)或外表。

Ultrasonic transmission requires medium, which is usually water, so we usually add water in the tank of ultrasonic cleaning machine. The ultrasonic cleaning machine operates by the action of ultrasonic high-frequency oscillation on water molecules, and the energy is also absorbed by water, so it will not cause any damage to people. The reason for the sound is that it is not ultrasonic. People can't hear ultrasonic. This also needs to be explained by the principle of ultrasonic cleaning machine: when ultrasonic wave acts on the liquid, tens of thousands of bubbles will be generated in the liquid, which will burst all the time, resulting in a shock wave with great energy, which is equivalent to an instantaneous high temperature of hundreds of degrees and up to thousands of atmospheres. This phenomenon is called "cavitation", Ultrasonic cleaning machine uses the shock wave generated by bubble explosion in liquid to wash and clean the inner or outer surface of workpiece gap.

超聲波會在液體中傳播，使液體與機槽在超聲頻率下一起振蕩，液體與清洗槽振動時都有各自的固有頻率，所以人們在使用超聲波機器時，會聽到這種振蕩中產(chǎn)生的“嘖嘖嘖”的聲音。剛開始可能會聽不習(xí)慣，感覺不是很安心，但這是心理作用，實際上對人體并沒有什么危害。
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The ultrasonic wave will propagate in the liquid and make the liquid and the machine tank oscillate together at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequencies. Therefore, when using the ultrasonic machine, people will hear the "tut tut" sound generated in this oscillation. At first, you may not be used to listening and feel at ease, but this is a psychological effect. In fact, it does no harm to the human body.

超聲波在空氣里傳播的衰減率大，所以超聲波對人體并不會有多大的影響。

The attenuation rate of ultrasonic wave propagation in the air is the largest, so ultrasonic wave will not have much impact on the human body.

如果非要說工業(yè)超聲波清洗機對人體有傷害，那則是與人體的接觸問題了。在清洗機工作的時間段中，要是不帶著手套就直接去接觸正在工作的超聲水槽里的水，則會感受到微妙的變化，會有感覺不舒服。使用者應(yīng)盡量避免直接把手放在正在工作的水槽里。如果一定要接觸，為了安全起見應(yīng)該帶上手套。若還是不太放心的話，那建議在超聲波清洗機工作時，不要長時間呆在機子旁邊，也要盡量少接觸清洗劑。

If the industrial ultrasonic cleaning machine is harmful to human body, it is a contact problem with human body. During the working period of the cleaning machine, if you directly contact the water in the working ultrasonic tank without gloves, you will feel subtle changes and feel uncomfortable. Users should try to avoid putting their hands directly in the working sink. If contact is necessary, gloves should be worn for safety. If you are still worried, it is recommended not to stay next to the ultrasonic cleaning machine for a long time and contact the cleaning agent as little as possible.

超聲波清洗劑的選擇普通能夠從兩個方面思索，一方面要從污物的性質(zhì)來選擇的清洗劑，另一方面則是要思索清洗劑外表張力、黏度以及高溫后所產(chǎn)生的蒸汽壓的上下。由于這些特性會影響到超聲波空化強弱，高蒸汽壓會降低超聲波空化強度，清洗液體外表的張力大、粘滯度高則不容易產(chǎn)生空化。

The choice of ultrasonic cleaning agent can be considered from two aspects: on the one hand, the cleaning agent should be selected according to the nature of dirt; on the other hand, the surface tension, viscosity and steam pressure generated after high temperature should be considered. Because these characteristics will affect the intensity of ultrasonic cavitation, high vapor pressure will reduce the intensity of ultrasonic cavitation. If the surface tension and viscosity of cleaning liquid are large, cavitation is not easy to occur.

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