At present, the electroplating industry does not know much about the practical application of ultrasonic cleaning machine. In electroplating, the purpose of pretreatment is to remove the dirt and impurities on the workpiece surface and make it an active surface suitable for electroplating. Many reasons for poor electroplating quality are poor pretreatment. The pretreatment is not good, and most of them do not use ultrasonic cleaning equipment.

超聲頻率一般為20-100KHZ之間。普通工件的前處理，一般采用低頻、中功率的超聲清洗設備，如頻率25-28KHZ，功率密度1W/cm。

The ultrasonic frequency is generally between 20-100khz. For the pretreatment of ordinary workpieces, low-frequency and medium power ultrasonic cleaning equipment is generally used, such as frequency 25-28khz and power density 1W / cm.、

由于低頻比高頻在介質中輕易發生空化，對于外形簡單、并不十分精 密的工件，此類清洗機就能滿足要求。特點是噪音較大價格便宜。對一些精 密度較高的工件，現使用的一般都為高頻40-68KHZ高功率的超聲清洗機。因此類清洗機對于縫隙、間隙、深孔、盲孔等外表形復雜的工件清洗效果較好。但是超聲清洗的作用只是有溶液到達的地方才干起到清洗作用。也就是說要避免深孔、盲孔中有空氣，并且要留意雜質著落、油污上漂和處置清洗不到位的現象。

Since low-frequency than high-frequency cavitation easily occurs in the medium, this kind of cleaning machine can meet the requirements for workpieces with simple shape and not very precise. It is characterized by high noise and low price. For some high-precision workpieces, high-frequency 40-68khz high-power ultrasonic cleaning machines are generally used. Therefore, this kind of cleaning machine has a good cleaning effect for workpieces with complex external shapes such as gaps, gaps, deep holes and blind holes. However, the role of ultrasonic cleaning is only where the solution reaches. In other words, it is necessary to avoid air in deep holes and blind holes, and pay attention to the landing of impurities, floating of oil and inadequate disposal and cleaning.

電鍍前處置時必 須根據工件的實際情況，采用適宜的方法進行有用清洗。金屬基材一般分為沖壓件和壓鑄件。沖壓件上面的油污為一般沖壓油，因其密度相比高所以相比輕易清洗。

Before electroplating, appropriate methods must be used for useful cleaning according to the actual situation of the workpiece. Metal substrates are generally divided into stamping parts and die castings. The oil stain on the stamping parts is general stamping oil, which is easy to clean because of its high density.

一般可用酸洗、電解等。而鋅、鋁、銅等的壓鑄件屬相比難清洗的因壓鑄件中添加了各種元素，此外在成型、拉升、壓延、切削、拋光的過程中還必 須使用各種油品，如機油、拋光油等。對于超聲波清洗機來講，機油可以輕松往除。但拋光油分為黃油白油、綠油等，這就相比難以往除。因此，必 須選擇合適的超聲清洗設備和清洗液。

Generally, pickling, electrolysis, etc. can be used. The die castings of zinc, aluminum and copper are relatively difficult to clean, because various elements are added to the die castings. In addition, various oil products, such as engine oil and polishing oil, must be used in the process of forming, lifting, calendering, cutting and polishing. For the ultrasonic cleaning machine, the oil can be removed easily. However, polishing oil is divided into butter, white oil, green oil, etc., which is difficult to remove. Therefore, appropriate ultrasonic cleaning equipment and cleaning fluid must be selected.

工件鍍完后固然經過漂洗，但某些較復雜工件，特別是有縫隙、深孔、盲孔的工件(如眼鏡彈簧腿)不能起到理想的作用。只有通過用超聲波來往除縫隙、深孔、盲孔中殘留的電鍍溶液。一般在這方面可選擇頻率略高、功率密度一般的超聲波清洗機即可。

Although the workpiece is rinsed after plating, some more complex workpieces, especially those with gaps, deep holes and blind holes (such as glasses spring legs), cannot play an ideal role. Only the residual electroplating solution in gaps, deep holes and blind holes can be removed by ultrasonic. Generally, ultrasonic cleaning machines with slightly higher frequency and general power density can be selected in this regard.