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FREE GUIDE TO ULTRASONIC CLEANING APPLICATIONS

Free Ultrasonic Cleaner Guide

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Cleaning Baskets and the Ultrasonic Cleaner

Cleaning tank size is a logical specification point when selecting an ultrasonic cleaner, but you must remember that the dimensions of cleaning baskets are slightly less than interior cleaning tank dimensions.

The function of the cleaning basket is, as you might surmise, holding objects being cleaned. But they also serve to keep these objects from contacting the bottom of the tank where cavitation-induced vibrations from the ultrasonic transducers cause them to vibrate against the tank. This causes abrasion that over time can wear a hole in the tank bottom.

Another point: cleaning basket size should allow you to position parts in such a way that they do not contact each other. This could result in scoring on soft metals or polished surfaces that can be caused by the same sonic vibrations.

Depending on the ultrasonic cleaner design, baskets are either suspended from the tank rim or are supported by rubber-clad feet near the corners of the tank bottom.

And yet another point you must keep in mind when selecting an ultrasonic cleaner. Parts must be fully immersed in the cleaning solution. This is called the working depth which is the distance between the bottom of the cleaning basket and the surface of the cleaning solution.

Ultrasonic Cleaning Basket Design

Stainless steel is the predominant material of construction for ultrasonic cleaning baskets. Some baskets have a mesh bottom and solid stainless steel sides; others are mesh throughout. Metal baskets absorb cavitation energy, thereby impacting its effect on cleaning the parts. That’s why you should use a mesh as open as practical to support the weight of the parts. Fine mesh baskets are available to hold small parts such as screws, nuts and bolts, and clock and watch mechanisms.

Picking up on our note above regarding part damage due to contact with each other, delicate parts may also be damaged by contact with metal mesh. In such cases there are three options that can be considered:

1. A perforated polycarbonate sheet placed on the basket bottom

2. A basket with plastic-coated mesh

3. A plastic basket. In this case the basket should be as thin as practical while safely containing parts. This is because plastic inhibits cavitation action more than stainless mesh.

In summary, basket selection balances effective cleaning with cleaning efficiency and part protection.

FREE GUIDE TO ULTRASONIC CLEANING APPLICATIONS

Your information is secure and will not be shared with a third party or spammed