超聲波功率就是其中的一種決定性因素。比如說，當超聲功率比較強的時候，清洗時間不用多久就可以洗干凈了，如果是清洗眼鏡、項鏈、手鏈、黃金鉑金首飾、珠寶首飾等等一些家用型的小物件，清洗對象是灰塵、油漬等污垢，那一般3-5分鐘就可以了。但如果清洗的物件比較大，且污垢比較厚重的話，那就不止了。一般在工廠工業中的清洗是15-30分鐘即可。當超聲波功率過于弱的時候，就不是清洗時間長與短的問題了，很有可能就洗不干凈了。

Ultrasonic power is one of the decisive factors. For example, when the ultrasonic power is relatively strong, the cleaning time will not take long to clean. If it is cleaning glasses, necklaces, bracelets, gold and platinum jewelry, jewelry and other small household items, and the cleaning object is dirt such as dust and oil stains, it will take 3-5 minutes. But if the cleaning object is large and the dirt is heavy, it will be more than that. Generally in the factory industry cleaning is 15-30 minutes. When the ultrasonic power is too weak, it is not the problem of long and short cleaning time, and it is likely that it will not be cleaned.

另外超聲波頻率也是決定清洗效果的一種因素，一般市面上的28KHz-128KHz之間的超聲波清洗設備主要是用在清洗流水線上，這個清洗時間又得看清洗工序有幾個，如果選擇全自動超聲波清洗機來進行整個清洗工序，那也是一個長期可行的辦法，這樣絕對是比人工清洗的效率更高，清洗潔凈程度也相對會更干凈。

In addition, the ultrasonic frequency is also a factor that determines the cleaning effect. Generally, the ultrasonic cleaning equipment between 28kHz and 128khz on the market is mainly used in the cleaning line. The cleaning time depends on the number of cleaning processes. If you choose the automatic ultrasonic cleaning machine to carry out the whole cleaning process, it is also a long-term feasible method, This is definitely more efficient than manual cleaning, and the cleaning degree will be relatively cleaner.

而40KHz以下的換能器主要用于五金類、金屬類的一些零配件，比較廣泛的被應用于鐵道行業、航天航空、輪船、汽車等行業，這些行業零配件往往污垢油脂比較厚重、外表比較粗糙，所以需要強度比較大的低頻換能器，清洗時間普遍是20-30分鐘左右。而一些精密光學零件都是采用高頻換能器，高頻的超聲波清洗機價格比低頻的價格是相對比較高的。像實驗室、醫學研究等場所，其清洗物件都比較精密細致，震動強度不宜太大，一般選擇40KHz或者更高頻率的超聲波清洗機，一般是5-30分鐘不等的清洗時間。

The transducers below 40KHz are mainly used for some hardware and metal parts, which are widely used in the railway industry, aerospace, ship, automobile and other industries. In these industries, the parts are often heavy in dirt and grease, and the appearance is rough, so the low-frequency transducers with large strength are needed, and the cleaning time is generally about 20-30 minutes. And some precision optical parts are using high-frequency transducer, the price of high-frequency ultrasonic cleaning machine is relatively higher than that of low-frequency. Such as laboratories, medical research and other places, the cleaning objects are more precise and meticulous, and the vibration intensity should not be too large. Generally, the ultrasonic cleaning machine with 40KHz or higher frequency is selected, and the cleaning time is generally 5-30 minutes.

再者洗凈時間的長短還與清洗劑有關，對于一些化學污垢，需要添加清洗劑來產生化學反應，從而達到徹底清洗，如果清洗劑選的不對，超聲波清洗機運作到報廢也洗不干凈的。所以清洗不干凈一般也不是超聲波清洗機的錯，畢竟超聲波清洗機起到的只是物理上的清洗作用。

Moreover, the length of cleaning time is also related to the cleaning agent. For some chemical dirt, it is necessary to add cleaning agent to produce chemical reaction, so as to achieve thorough cleaning. If the cleaning agent is not selected correctly, the ultrasonic cleaning machine can not be cleaned even when it is scrapped. So cleaning is generally not the fault of ultrasonic cleaning machine, after all, ultrasonic cleaning machine only plays the role of physical cleaning.

清洗物件本身的污垢厚重程度，厚重的一般會比污垢淺的清洗時間長。不過清洗時間也并非是越長越好，如果清洗時間太長了，就要考慮考慮是不是清洗設備選擇錯了。

The dirt of the cleaning object itself is heavy, and the heavy one usually takes longer than the shallow one. However, the longer the cleaning time, the better. If the cleaning time is too long, it is necessary to consider whether the cleaning equipment is wrong.

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