Product details description
Aluminium extrusion is the process of forcing molten aluminum through a
shaped die to create a long profile with a specific cross-section. It is the
"Lego" of the construction and manufacturing world.
Designing for Structural Integrity
Hollow vs. Solid: Hollow profiles reduce weight and material cost while
maintaining stiffness through geometric shapes (triangles, hexagons). Solid
profiles are used where high shear strength is needed (e.g., machine
mounts).
Wall Thickness: Standard structural extrusions are 1.5mm to 3mm thick.
Thinner walls (<1mm) risk crushing during handling or anodizing; thicker
walls (>5mm) increase weight and cost exponentially due to longer cooling
times in the extrusion press.
Ribs and Gussets: Adding internal ribs increases the moment of inertia,
preventing bending without adding much weight.
Thermal Break (Thermal Bridge Prevention)
Aluminum is highly conductive (it transfers heat/cold quickly). For windows
or exterior doors, a "Thermal Break" is essential.
Process: A strip of Polyamide (nylon reinforced with glass fiber) is
inserted into the aluminum profile during extrusion. This separates the interior
and exterior aluminum, stopping heat transfer.
Benefit: Prevents condensation on the interior frame in winter and keeps
heat out in summer, improving energy efficiency by up to 40%.
Aesthetic Finishes
Anodizing: An electrochemical process that thickens the natural oxide
layer. It is metallic, scratch-resistant, and UV-stable. Colors are limited to
champagne, bronze, black, and clear (silver).
Powder Coating: A dry powder is sprayed and baked. It allows for any RAL
color, matte or gloss textures, and wood-grain patterns. It is thicker than
anodizing, offering better corrosion protection for harsh environments.
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