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home > products > extruded products > aluminium extrusion process

Aluminium extrusion process

Metal extrusion is a process for creating objects of a fixed cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section. The advantages of metal extrusion over other manufacturing processes is its ability to create complex cross-sections and work materials that are brittle, since the material only encounters compression and shearing forces. Finished parts also have an excellent surface finish.

  • The process begins by heating the raw material.
  • It is then loaded into the container in the press where the hydraulic ram then presses on the material to push it out of the die into the desired shape.
  • Afterwards the extrusion is usually stretched in order to straighten it and cut to the required length.
  • Often a surface finish is required to achieve the desired mechanical properties. These typically include tempering to increase hardness, and anodising or powder coating for aesthetic purposes.
Metal extrusion theory

Extrusion of a round blank through a die.

Jinlogic has extensive experience of metal extrusion, most notably with aluminium. The products we have supplied have all been subject to very high tolerance standards and have been used in demanding safety critical applications. An example of this is the housing for police car lights.

Anodising line
Aluminium extrusion line
Painting line