The ultrasonic cleaner is highly effective at removing a wide range of contaminants, including oxides, grease, oil residues, abrasive pastes, and polishing compounds. However, even after thorough cleaning, some fine particles of dirt that are tightly adhered to the microscopic surface of the base metal may remain, especially in hard-to-reach areas or complex geometries. As a result, for a complete clean—particularly for heavily soiled parts that have been treated with various pastes—a manual washing step is often necessary. Despite this, it's important to note that manual cleaning doesn't always guarantee a perfectly clean surface.
The precision required in manufacturing many machine parts, instruments, and components is closely tied to the high-quality finish of their surfaces. This is especially critical for small parts such as optical glass, clock mechanisms, relay contact points, ball bearings, vacuum tube electrodes, motor brushes, and electric shaver blades. Even the smallest amount of dirt or dust left on these surfaces can significantly reduce their performance or lifespan. It’s crucial to rinse these parts thoroughly after processing with abrasive solutions or pastes, as residual dirt can cause damage over time. In such cases, an ultrasonic cleaner becomes not just helpful, but essential.
An ultrasonic cleaning system works by transmitting high acceleration into the cleaning solution, creating localized cavitation that exerts a destructive force on the surface being cleaned. It also produces an emulsification effect that helps break down oily substances.
Ultrasonic cleaning machines can operate in either a chemically active or inactive medium. In the latter case, the cleaning effectiveness may be slightly reduced. The mechanical action of the inactive medium is responsible for the cleaning process, as when cavitation bubbles collapse near the dirt, shock waves are generated. These vibrations allow the bubbles to penetrate into the pores, narrow crevices, and gaps between the surface and the dirt, effectively breaking down the dirt layer. Non-sticky dirt is particularly vulnerable to this mechanical cleaning method. However, when dealing with viscous or elastic dirt, the impact of cavitation is less significant because the dirt tends to stretch and contract along with the bubble's movement.
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