After the components have dissolved, the solution is left to settle undissolved particles to the bottom. When pouring into a container for anodizing, it must be filtered.
Methods of anodizing aluminum
Several methods of processing aluminum alloys have been developed, but the chemical method in an electrolyte environment has found wide application. Acids are used to obtain the solution:
sulfuric;
chrome;
oxalic;
sulfosalicylic.
To impart additional properties to the solution, salts or organic acids are added. At home, sulfuric acid is mainly used, but when processing parts of complex configuration, it is preferable to use chromic acid.
The process occurs at temperatures chinese overseas australia data 0°C to 50°C. At low temperatures, a hard coating forms on the surface of the aluminum. When the temperature increases, the process proceeds much faster, but the coating is highly soft and porous.
Hard anodizing technology for aluminum
In addition to the chemical method, in some cases the following methods of aluminum anodizing are used:
microarc;
color:
adsorption;
by lowering into electrolyte;
by dipping into a dye solution;
galvanization;
interference;
integral.
Warm anodizing
The warm anodizing method is used to obtain a base for painting. The coating is porous, but due to this it has high adhesion. Epoxy paint applied on top will reliably protect aluminum from external influences.