在机加工、汽配、电子、医疗器械等行业，工件表面的油污、铁屑、抛光膏如果清不干净，直接影响后续电镀、喷涂、装配的质量。很多企业换了清洗剂、加了人工刷洗，效果还是不理想。问题往往出在清洗方式上——手工清洗一致性差，喷淋有死角，而超声波清洗能深入到盲孔、螺纹、缝隙里，把污物震出来。

In industries such as machining, auto parts, electronics, and medical equipment, if the oil stains, iron filings, and polishing paste on the surface of the workpiece are not cleaned thoroughly, it directly affects the quality of subsequent electroplating, spraying, and assembly. Many companies have changed their cleaning agents and added manual scrubbing, but the results are still not satisfactory. The problem often lies in the cleaning method - manual cleaning has poor consistency, spraying has blind spots, while ultrasonic cleaning can penetrate into blind holes, threads, and gaps, shaking out dirt.

一、超声波清洗靠什么起作用

1、 What makes ultrasonic cleaning work

原理不复杂：换能器把高频电信号转换成机械振动，在清洗液中产生大量微小气泡，气泡闭合时瞬间产生冲击力，把工件表面的污物剥离。关键是频率和功率的匹配。低频（28kHz左右）空化强度大，适合重油污和粗大工件；高频（40kHz以上）空化密集但力度柔和，适合精密件和表面要求高的产品。选型前要明确工件材质、污物类型、洁净度要求，不能一套参数打天下。

The principle is not complicated: the transducer converts high-frequency electrical signals into mechanical vibrations, generating a large number of tiny bubbles in the cleaning solution. When the bubbles close, an instantaneous impact force is generated, which peels off the dirt on the surface of the workpiece. The key is the matching of frequency and power. Low frequency (around 28kHz) cavitation intensity is high, suitable for heavy oil stains and coarse workpieces; High frequency (above 40kHz) cavitation is dense but gentle, suitable for precision parts and products with high surface requirements. Before selecting, it is necessary to clarify the material of the workpiece, the type of dirt, and the cleanliness requirements. One set of parameters cannot dominate the world.

二、单槽还是多槽，看产量和工艺

2、 Single slot or multiple slots, depending on production volume and process

单槽机结构简单、投资低，适合小批量、多品种的间歇式清洗。多槽机把粗洗、精洗、漂洗、烘干分槽完成，节拍稳定、一致性好，适合批量生产。如果工件还要防锈或干燥，后面可以加防锈槽和烘干槽。全自动线则通过PLC和机械臂实现全程无人操作，适合大批量、高节拍的场景。选哪种，先算清楚每天要洗多少件、洁净度要求几级。

The single slot machine has a simple structure and low investment, suitable for intermittent cleaning of small batches and multiple varieties. The multi slot machine completes rough washing, fine washing, rinsing, and drying in separate slots, with stable and consistent rhythm, suitable for mass production. If the workpiece still needs rust prevention or drying, rust prevention grooves and drying grooves can be added later. The fully automated line achieves unmanned operation throughout the entire process through PLC and robotic arms, suitable for large-scale, high tempo scenarios. Which one to choose, first calculate how many items need to be washed every day and what level of cleanliness is required.

三、容易被忽略的三个细节

3、 Three details that are easily overlooked

第一是清洗液温度。温度低了空化效果差，温度高了气泡太多反而减弱冲击，一般控制在40到60℃之间。第二是工件摆放。工件不能直接压在槽底，也不能叠放太密，否则超声波被挡住，背面洗不到。第三是漂洗和烘干。清洗后如果直接晾干，水里杂质会留在表面形成水痕，精密件建议用纯水漂洗再加烘干。

The first is the temperature of the cleaning solution. The cavitation effect is poor when the temperature is low, and too many bubbles weaken the impact when the temperature is high. It is generally controlled between 40 and 60 ℃. The second is the placement of workpieces. The workpiece cannot be directly pressed on the bottom of the groove, nor can it be stacked too tightly, otherwise the ultrasonic waves will be blocked and the back cannot be washed. The third is rinsing and drying. If directly dried after cleaning, impurities in the water will remain on the surface and form water marks. Precision parts must be rinsed with pure water and then dried.

四、选厂家看什么

4、 What to look for when choosing a manufacturer

超声波清洗是非标定制，同一款机型在不同工况下效果差别很大。选厂家要看他能不能到现场看工件、能不能做清洗试验、方案是否针对你的污物和节拍设计。售后也关键，换能器、发生器这些核心部件出问题，响应速度直接影响生产。有研发能力、能提供全自动线方案的厂家，通常比只卖标准机的更靠谱。

Ultrasonic cleaning is a non-standard customization, and the effect of the same model varies greatly under different working conditions. The choice of manufacturer depends on whether they can come to the site to inspect the workpiece, conduct cleaning tests, and whether the plan is designed for your dirt and rhythm. After sales is also crucial, as problems with core components such as transducers and generators can directly affect production response speed. Manufacturers with research and development capabilities and the ability to provide fully automated line solutions are usually more reliable than those who only sell standard machines.

清洗这道工序看着简单，做稳定了才能保证后面不返工。

The cleaning process seems simple, and only by stabilizing it can we ensure that there will be no rework in the future.