(1) The principle of cleaning

As you notice when you wash dishes at home, some stains are easy to remove if you scrub with a drop of liquid soap on the sponge whereas there are some stubborn ones that stay on even after soaking them in water or hot water for a while. We will now take a look at the mechanism of how the cleaning works.

What matters the most here is to determine the ultimate goal of the cleaning task. It is necessary to select the best and most economical method of surface cleaning. When you determine how clean the product needs to be, it is important to assess the degree of permissible contamination without leaving harmful effects on the next process.

(2) Cleaning with detergents

This is the most common cleaning method, which is similar to washing dishes at home. The difference is as follows: heating up the detergents and accelerate the reaction in order to improve the cleaning efficiency and capacity, circulating the degreasing solution, shaking the workpieces, or mixing the degreasing solution using ultrasonic waves in order to save power by skipping the scrubbing process.
In general, the detergent is classified into the types described below. They can be used individually or used by the composite of these items.

[Table 1] is an example of the commonly-used degreasing bath called "boiling degreaser" or "alkaline degreaser". Heat up the solution to 50 - 60°C before use.

[Table 1] Example of degreasing bath composition (g/L)

* Note) g/l refers to grams dissolved per liter of degreasing solution.