超声波功率就是其中的一种决定性因素。比如说，当超声功率比较强的时候，清洗时间不用多久就可以洗干净了，如果是清洗眼镜、项链、手链、黄金铂金首饰、珠宝首饰等等一些家用型的小物件，清洗对象是灰尘、油渍等污垢，那一般3-5分钟就可以了。但如果清洗的物件比较大，且污垢比较厚重的话，那就不止了。一般在工厂工业中的清洗是15-30分钟即可。当超声波功率过于弱的时候，就不是清洗时间长与短的问题了，很有可能就洗不干净了。

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.

另外超声波频率也是决定清洗效果的一种因素，一般市面上的28KHz-128KHz之间的超声波清洗设备主要是用在清洗流水线上，这个清洗时间又得看清洗工序有几个，如果选择全自动超声波清洗机来进行整个清洗工序，那也是一个长期可行的办法，这样是比人工清洗的效率更高，清洗洁净程度也相对会更干净。

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以下的换能器主要用于五金类、金属类的一些零配件，比较广泛的被应用于铁道行业、航天航空、轮船、汽车等行业，这些行业零配件往往污垢油脂比较厚重、外表比较粗糙，所以需要强度比较大的低频换能器，清洗时间普遍是20-30分钟左右。而一些精密光学零件都是采用高频换能器，高频的超声波清洗机比低频的是相对比较高的。像实验室、医学研究等场所，其清洗物件都比较精密细致，震动强度不宜太大，一般选择40KHz或者更高频率的超声波清洗机，一般是5-30分钟不等的清洗时间。

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.

再者洗净时间的长短还与清洗剂有关，对于一些化学污垢，需要添加清洗剂来产生化学反应，从而达到彻底清洗，如果清洗剂选的不对，超声波清洗机运作到报废也洗不干净的。所以清洗不干净一般也不是超声波清洗机的错，毕竟超声波清洗机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，厚重的一般会比污垢浅的清洗时间长。不过清洗时间也并非是越长越好，如果清洗时间太长了，就要考虑考虑是不是清洗设备选择错了。

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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