What is eloxal
Eloxal is a term excerpted from German in to the aluminum surface processing sequence. (ELOXAL). In international terminology it is defined as “Anodic Oxidation” or Anodizing”. Eloxal is a very special surface coating for aluminum; it is done by an electrochemical process. The used electrolyte is a liquid acidic solution. It is realized in tanks that are defined as baths, have one side open and have the dimensions adjusted as per the dimensions of the materials that are being processed.

The processes, which are tended to change the decorative appearance of the surface, may be mechanical or chemical. Eloxal; which is applied on the matt, bright (brush polishing), satinet (strip sanding) appearance that is established through the mechanical pretreatments; through the fixing process which is d0one at the final phase of the product protects the plates that are open to the media.

Eloxal coating is one of the most important surface treatments applied on aluminum products. The fundamental factor determining the thickness of the eloxal layer is the amount of the current conveyed to the aluminum which is used an anode. The time and the thickness of the coating are determined by applying varying currents such as 1.2 or 2 amperes, onto the existing unit area. The thickness of eloxal painting is expressed in microns (µ).

Class-1 is the coating class of which the minimum coating thickness is 10 microns.

Class-2 is the coating class of which the coating thickness is 18 microns. The eloxal costs increases in a linear ratio depending on the thickness of the coating. Eloxal coating process, in addition to be possible for aesthetic aesthetics and decoration, may also be done for industrial purposes or it is done to obtain a surface on the aluminum that is durable against corrosion, long living and harder against the possible up coming impairments. Eloxal process is being used for 70 years now both for decoration and industrial applications. Many studies have been carried on for architectural application in order to “color” the eloxal layer and many processes thereto have been developed. Most of these processes are based on the principle that coloring pigments are accommodated on the porous structure of the eloxal layer.

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