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In Selecting The Cleaning Solution, Three Factors Should Be Considered:

  1) Effectiveness:
In choosing the most effective cleaning solution, experimentation may be necessary. Where ultrasonics is being applied to an existing application, it is probable that the solution presently being used can remain unchanged.

2) Simplicity of use:
Liquids should be judged for safety, simplicity of use, and longevity.

3) Cost
The least expensive cleaning solution is not necessarily the least costly to use. Consideration must be given to its effectiveness, safety, and the number of parts processed with a given amount of solution. Naturally, the cleaning solution must be compatible with the materials to be cleaned as well as effective in removing the soils. Water is one of the most common cleaning liquids and, invariably, systems using aqueous-based solutions are simple to handle, have low operating costs, and are effective over a wide range of applications. There are some materials and soils, however, for which aqueous solutions are not particularly suitable and, to deal with these, there is a wide range of solvents available.

Parts Handling
Another factor in ultrasonic cleaning concerns the loading of parts or the design of the basket or containers for holding the parts. The loading of parts in the ultrasonic cleaning tank should be such that neither the parts nor the basket are on the tank bottom. The sum of the parts ' cross-sectional areas should not exceed 70% of the tank's cross-sectional area.

Elastomers and non-rigid plastics will absorb ultrasonic energy and should be used cautiously for fixturing. Insulated parts may have to be specifically oriented. Incorrect basket design, or a basket having too high a mass, can greatly reduce the effectiveness of the best ultrasonic cleaning system.

Any material more tightly woven than 50 mesh screen acts as a solid, while slightly larger openings scatter the ultrasonic waves. Openings larger than one-quarter inch tend to act as open material. Hooks, racks, and beakers can also be used to support parts.

Theory of Ultrasonics
Selecting A Cleaning Process And Cleaning Solutions
Three Major Factors To Consider


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