How to make aluminum trim

What are aluminum trim pieces?

Aluminum is a very common specified material used for extrusions and formed profiles that can be made into long, narrow, flexible and adaptable pieces for architectural trim applications and accents, interior and exterior lighting, and engineering design. The use of aluminum trim pieces stems from the many positive properties of aluminum; these include its resistance to rust and corrosion and its low density.

 

Advantages of aluminum extrusion.

Extrusion has proven to be the most efficient and effective method of producing aluminum trim, as it is both economical and provides immediate results. Aluminum's high ductility means that the metal can be easily formed into a variety of cross-sections without the need to expend a lot of energy in the tooling or forming process, and aluminum also typically has a melting point that is about half that of ordinary steel. These two facts mean that the aluminum extrusion process has a relatively low energy footprint, which translates into lower tooling and manufacturing costs. Finally, aluminum also has a high strength-to-weight ratio, making it an excellent choice for industrial applications. Many profiles of aluminum trim offer excellent tolerances, exceptional dimensions, and precisely meet the requirements of product design.


aluminum trim

 

How aluminum trim is manufactured

The process typically used to produce aluminum trim is extrusion, which is one of the most reliable methods for producing high-quality products with excellent durability and appearance. It is a continuous manufacturing process that involves forcing a flexible material through a profile or die to form the shape of the desired product; it can be done cold or hot.

Of the many products produced by extrusion, aluminum trim is the easiest to form. A slender trim is extruded from the extruder and the trim is cut to the desired size before being packaged for shipping. In some cases, depending on the profile, the final product may require finishing.

 

Billet

The aluminum trim extrusion process begins with a billet, an intermediate casting designed and produced for further processing. Billet is made from a variety of metals, most commonly aluminum; billets are cast from ingots. The aluminum families used to produce billets are 6061 and 6063.

 

Molds

The key factor in the production of aluminum trim is the shape of the profile or mold, which is made of machined steel. Molds for aluminum trim are readily available from the manufacturer's stock, but designers can design special and unusual profiles.

 

Heating

To prepare the billet for the extrusion process, it is preheated to make it pliable and ductile. Blanks are prepared by heating them to 800° F (426° C). The heating makes the blanks ductile but not molten. Essentially, the blank is softened so that it can be molded.

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