As the third-frequent element comes aluminium in different compounds in almost all rocks and soils before.

Add the last 80 years the aluminium has gained in importance because of its specific properties as the high form stability and the low specific weight in the industry. A large proportion of development is due to the surface treatment or aluminium finish, which can be found both in outdoor and indoor area, as well as in the functional layer to system components in many industries. Aluminium when comes in contact with the air forms a corrosive layer but only in chemically neutral state provides a corrosion protection of the parent metal. The very thin oxide layer is already malleable and ductile or has no mechanical stress requirements. The roll forming helps your work piece get to the desired functionality as well as for an appealing optics. There are basically various finishing processes:

Continue to read: http://paneffect.wordpress.com/2013/...ium-finishing/