超聲波清洗機(jī)就是用來清洗物品的機(jī)器，利用超聲波的原理進(jìn)行清洗，被清洗的物品通過聲波可以在水中傳播，而達(dá)到清洗的結(jié)果。下面來超聲波清洗設(shè)備廠家講講超聲波清洗機(jī)的超聲波頻率及功率密度的相關(guān)內(nèi)容吧。

Ultrasonic cleaning machine is a machine used to clean objects. It uses the principle of ultrasonic to clean. The cleaned objects can be spread in the water through sound waves to achieve the results of cleaning. Next, let's talk about the ultrasonic frequency and power density of the ultrasonic cleaning machine.

超聲波頻率

Ultrasonic frequency

超聲波頻率決定空化泡破裂產(chǎn)生沖擊波的強(qiáng)度，超聲波清洗的頻率一般在20~100Khz之間。對于表面粗糙度要求較高，、具有小直徑孔或狹縫的零件，宜用波長較短、能量集中的高頻超聲波清洗(一般40Khz以上)較好。

The ultrasonic frequency determines the intensity of shock wave generated by cavitation bubble rupture. The frequency of ultrasonic cleaning is generally between 20~100khz. For parts with high surface roughness requirements and small diameter holes or slits, it is better to use high-frequency ultrasonic cleaning with short wavelength and concentrated energy (generally above 40KHz).

但高頻超聲振動在清洗液中衰減較大，作用距離較短，空化強(qiáng)度也較弱，清洗效率較低，而且由于高頻的方向性而產(chǎn)生的“陰影”區(qū)，使零件某些部位清洗不到。

However, the high-frequency ultrasonic vibration attenuates greatly in the cleaning fluid, the action distance is short, the cavitation intensity is weak, and the cleaning efficiency is low. Moreover, some parts of the parts cannot be cleaned due to the "shadow" area generated by the high-frequency directivity.

在使用無頻率跟蹤的超聲清洗裝置時，需要經(jīng)常調(diào)節(jié)發(fā)生器的頻率旋扭，使其輸出信號的頻率與換能器的固有振動頻率保持一致。此時空化強(qiáng)，在透明的清洗液中可以看到白色的聚流用手試探時有針刺感。在使用水或水洗劑時，由于空化作用引起的物理清洗力對低頻有利，一般用15~30Khz的超聲波。

When using the ultrasonic cleaning device without frequency tracking, it is necessary to often adjust the frequency rotation of the generator to make the frequency of its output signal consistent with the natural vibration frequency of the transducer. At this time, the cavitation is strong, and white accumulation can be seen in the transparent cleaning solution. There is a sense of acupuncture when testing with your hand. When using water or water detergent, the physical cleaning force caused by cavitation is beneficial to low frequency, and generally 15~30khz ultrasonic wave is used.

超聲波的功率密度

Ultrasonic power density

超聲波的功率密度對超聲波的清洗效率影響很大。使用超聲波清洗的主要參數(shù)就是功率，或者確切的說，是清洗槽內(nèi)被清洗工件表面的功率密度的大小，它直接影響到超聲聲強(qiáng)的大小，聲強(qiáng)大小又是直接影響空化效果的因素。超聲波清洗的效果不一定完全與功率×清洗時間成正比。

The power density of ultrasonic wave has a great influence on the cleaning efficiency of ultrasonic wave. The main parameter of ultrasonic cleaning is power, or to be exact, the power density of the cleaned workpiece surface in the cleaning tank, which directly affects the ultrasonic sound intensity, which is a factor that directly affects the cavitation effect. The effect of ultrasonic cleaning is not necessarily completely related to power × It is proportional to the cleaning time.

可以想象有時用小功率的清洗機(jī)，花費很長時間也不會有特別明顯的效果，如果當(dāng)大功率超聲波清洗機(jī)功率達(dá)到一定值，則可以很快將污垢去除。但功率過大空化強(qiáng)度將大大增加，清洗效果是提高了，但會使較精密的零件產(chǎn)生蝕點得不償失，而且超聲波底部振動處空化嚴(yán)重，很容易受到水點腐蝕減少超聲波清洗劑的壽命。

It can be imagined that sometimes using a low-power cleaning machine will take a long time and will not have a particularly obvious effect. If the power of a high-power ultrasonic cleaning machine reaches a certain value, the dirt can be removed quickly. However, if the power is too large, the cavitation intensity will be greatly increased, and the cleaning effect will be improved, but the more precise parts will have corrosion spots. Moreover, the cavitation at the vibration place at the bottom of the ultrasonic is serious, which is easy to be corroded by water spots, reducing the service life of the ultrasonic cleaning agent.

太強(qiáng)的聲強(qiáng)會造成空化泡過多，形成聲波屏障，是聲波不容易傳導(dǎo)到液體空間。在遠(yuǎn)離聲源的地方聲波強(qiáng)度會減弱很快，不能形成有效的清洗。超聲波的功率密度越大空化作用越強(qiáng)其清洗效果越好，對表面污垢嚴(yán)重、形狀復(fù)雜、有深孔盲孔零件，應(yīng)選用較大的功率密度。頻率20~50Khz，超聲波能量密度為2~3W/cm?好；一般情況下，超聲波清洗機(jī)的功率密度設(shè)在0.5～1W/cm?。

Too strong sound intensity will cause too many cavitation bubbles and form a sound wave barrier, which makes it difficult for sound waves to be transmitted to the liquid space. At a place far away from the sound source, the intensity of the sound wave will weaken quickly and cannot form an effective cleaning. The greater the power density of ultrasonic, the stronger the cavitation effect, and the better the cleaning effect. For parts with serious surface dirt, complex shape, deep hole and blind hole, a larger power density should be selected. The frequency is 20~50khz, and the ultrasonic energy density is 2~3w/cm? Good; Generally, the power density of ultrasonic cleaning machine is set at 0.5 ~ 1W / cm?.

超聲波清洗機(jī)的超聲波頻率及功率密度分析就到這里吧，您在使用之前建議是多去了解該機(jī)器的相關(guān)的事項，這樣才能順利的使用下來，更多事項就來我們網(wǎng)站www.zjfsmy.com咨詢吧。

That's all for the ultrasonic frequency and power density analysis of the ultrasonic cleaning machine. Before using it, you'd better learn more about the relevant matters of the machine, so that it can be used smoothly. For more matters, please come to our website www.zjfsmy.com for consultation.