ALLOYMagnesium and silicon are the most important alloying minerals. Others are copper, zinc, manganese, titanium, bismuth and chromium in aluminum profiles.
ALUMINUMAn element that occurs abundantly in the earth’s crust, incorporated in many different minerals, including bauxite.
ANODIZINGIs an electrochemical surface-treatment method; that converts the metal on the surface into aluminum oxide. The thickness of the oxide layer normally ranges between 5 and 25 μm (micrometers, commonly referred to as “my”). One μm is equal to one thousandth of a millimeter.
NATURAL ANODIZINGAnodizing without adding color. Since the aluminum oxide is transparent, the natural surface is visible.
BAUXITEThe mineral that is most worth mining to recover aluminum. Bauxite contains between 20 and 30 percent aluminum and occurs mainly in tropical areas close to the equator. Australia, Brazil and Jamaica, for example, have large deposits. Bauxite is mined in open pits. The name derives from the Les Baux mining area in southern France.
CIRCUMSCRIBED CIRCLEThe diameter of the circle within which the profile is housed is a measurement of the profile’s size. The term is generally used to indicate the limits of a certain press.
EXTRUSIONThe method used to produce metal profiles, primarily those made of aluminum. Copper, brass and magnesium can also be extruded, but with greater difficulty.
HEAT-TREATABLE ALLOYA type of alloy that acquires its strength through precipitation-hardening
(heat-treatment) and which is used for profiles. Alloys that are not heat-treated acquire their strength through increased additives or cold-rolling and are used primarily for sheeting, strip and foil.
HOMOGENIZINGIs a heat treatment that distributes the alloy elements evenly in the material.
BILLETSTo produce profiles, the smelter plant casts the aluminum alloy to form round billets whose diameter is adapted to each press, and in lengths of six to seven
PERIMETERThe distance a pen moves when following the outer contour (outer perimeter) and inner contour (inner perimeter) of a profile. Generally expressed in millimeters. The perimeter constitutes the basis for calculating the surface for surface treatment (perimeter x length).
PRESS FORCEThe power with which the metal is pressed through the tool. Power is now designated in Mega Newton (MN); formerly tones were used. Ten MN is equal to approximately 1,000 tones. Canex has two presses, 22 MN and 27 MN.
PRIMARY METALMetal produced from aluminum oxide, which in turn is produced from bauxite.
In Egypt there is one primary smelter plant, in Naga Hamadi.
SECONDARY METALRe-melted metal; from products or process scrap.
SEMI-HOLLOW PROFILEA solid profile with a cavity that is almost closed. May also require a hollow
die or the redesigning of the profile.