How does it work
The detergents are made up of strong alkaline raw materials, such as soda and potash, products well known for being very active in the removal of organic pollutants and difficult dirt such as waxes and fats. The effectiveness is also assisted by surfactants whose function is to remove and emulsify the oils.
Obviously the cleaning power has increased considerably from the temperature, therefore the detergent bath in systems is kept at at least 50 ° C.
This process can only be used on non-oxidized surfaces, and it is not recommended to use it for metals such as aluminum since hydroxides react quickly with it generating hydrogen. In order to use it on aluminum, you need to be careful, using specific processes or using less concentrated alkaline charges. Other unsuitable materials are bronze and brass, which can be affected, especially on coloring.
A properly performed alkaline detergent cycle can guarantee optimal pre-treatment for preparation for painting. It can be carried out by means of only three steps: Cleaner - Rinse - Rinse, but it is recommended to add a final passivation to increase the adhesion of the paint. A classic example of passivation that is becoming increasingly widespread is nanotechnology, which usually requires a further final rinse of demineralized water.