超声波清洗的核心不是水泡翻腾，而是「空化效应」：换能器把电转成高频机械振动，液体里长出微气泡、再瞬间溃灭，把缝隙里的切削液、抛光膏、助焊剂“炸”下来。频率、功率密度、槽数，是三个非常容易被销售带偏的参数。

The core of ultrasonic cleaning is not the rolling of bubbles, but the "cavitation effect": the transducer converts electricity into high-frequency mechanical vibration, causing microbubbles to grow in the liquid and then instantly collapse, "blasting" the cutting fluid, polishing paste, and flux in the gaps. Frequency, power density, and number of slots are the three most easily biased parameters in sales.

一、频率：低频去垢，高频护精密

1、 Frequency: Low frequency descaling, high frequency precision protection

20–28kHz：气泡大、冲击猛，铸件除砂、重油污、模具积碳用，但别碰镜片和镀层；

20-28kHz: Large bubbles, strong impact, used for casting sand removal, heavy oil stains, and mold carbon deposition, but do not touch lenses and coatings;

40kHz：工业万能档，轴承、五金、实验室器皿的平衡点；

40kHz: Industrial universal gear, balance point for bearings, hardware, and laboratory utensils;

68–80kHz：光学镜片、PCB、精密喷嘴，气泡细密不伤面；

68-80kHz: Optical lenses PCB、 Precision nozzle with fine and non damaging bubbles;

120kHz+：半导体/医疗精密件，走兆声逻辑，不是“越强越好”。

120kHz+: Semiconductor/medical precision components, using megahertz logic, not 'the stronger the better'.

带盲孔、深槽的工件，频率太低气泡进不去，优先 40kHz 以上或双频切换。

For workpieces with blind holes and deep grooves, if the frequency is too low and bubbles cannot enter, priority should be given to switching to 40kHz or above or dual frequency.

二、功率密度比“总功率”诚实

2、 Power density is more honest than 'total power'

看 W/L，不看机器贴的“3000W”。通用清洗 25–35W/L，重油污 50–80W/L；密度再往上堆，空化变噪声，铝件、镀层件反而被“打麻脸”。大槽体还要校换能器排布，底部单排容易声场不均，配抛动或旋转篮更稳。

Look at W/L, not the "3000W" label on the machine. General cleaning 25-35W/L, heavy oil pollution 50-80W/L; As the density increases, cavitation becomes noise, and aluminum and coated parts are actually "pockmarked". The arrangement of transducers in the large tank also needs to be calibrated. A single row at the bottom is prone to uneven sound field, and it is more stable to use a throwing or rotating basket.

三、槽数跟着工序走，不跟着“越多越出色”走

3、 The number of slots follows the process, not the principle of 'more, higher'

单槽：小批量除油、返修件；

Single slot: small batch degreasing and repair parts;

双槽：粗洗+漂洗，解决二次污染；

Double tank: rough washing+rinsing, solves secondary pollution;

三槽及以上：清洗→多级溢流漂洗→风切/烘干，批量精密件、光学件、需纯水收尾的产线才值当；

Three or more slots: cleaning → multi-stage overflow rinsing → air cutting/drying, only suitable for batch precision parts, optical parts, and production lines that require pure water finishing;

全自动多槽（机械臂/行吊）：对接节拍生产，核心价值是“每篮洁净度一致”，不是省一个人力。

Fully automatic multi slot (robotic arm/overhead crane): Matched with rhythm production, the core value is "consistent cleanliness per basket", not saving manpower.

四、两个出厂就被忽略的开关

4、 Two switches that were overlooked at the factory

新液先脱气 5–10 分钟（溶解气体吸声，初期洗不匀）；液位高于换能器面 50–100mm、不超槽容 80%。循环过滤没配，杂质漂着重新粘回工件，槽液半个月就废。

Degassing the new liquid for 5-10 minutes (dissolved gas absorbs sound, initial washing is not uniform); The liquid level should be 50-100mm above the transducer surface and not exceed 80% of the tank capacity. The circulating filtration is not matched, and impurities float back to the workpiece, causing the tank solution to waste in half a month.

选型顺序永远是：工件材质 → 污垢类型 → 有没有盲孔 → 节拍和洁净度标准 → 才轮到频率/槽数/品牌。拿着样件去厂家跑一次铝箔穿孔+实件清洗，比看十页彩页靠谱。

The selection order is always: workpiece material → dirt type → presence of blind holes → rhythm and cleanliness standards → frequency/groove number/brand. Taking the sample to the manufacturer for a perforated aluminum foil and actual cleaning is more reliable than looking at ten colored pages.