Anodizing is an electro-chemical conversion process. The surface of the metal is converted to aluminium oxide as a result of reactions going on at the anode in an acidic solution.
After cleaning and etching, aluminium profiles are immersed in sulphuric acid solution under controlled parameters. An electric current flows through the solution to produce an aluminium oxide film, which is extremely hard, durable and corrosion resistant.
Aluminium profiles are then electro or dye coloured to obtain aesthetic colours such as light, medium and dark bronze, silver, gold, etc.
Sealing is the final stage in anodizing process and it is done in hot water solution. The purpose of sealing process is to close porous aluminium oxide layer after the anodizing step in order to enhance the durability of the finishing.
G Das Industries, with its capacity of over 2,500 tons per year, produces all anodizing finishes such as natural silver, gold, light, medium and dark bronze, and black in matt or shiny finish. The anodizing process and products respond to the quality standard requirements such as UNBS, ISO and Qualanod.
