Cold extrusion

Cold extrusion is a non-cutting forming process used to manufacture complex precision parts. In this process, a metal blank is plastically deformed by high forming forces without prior heating. Under the pressure of the forming tools, the material flows into the specified geometry.

Cold forming will result in work hardening of the material. At the same time, the process enables excellent material utilisation and the cost-effective production of precise components in large quantities.

Cold forming leads to work hardening of the material and can thus increase the strength of the finished component. At the same time, the process enables very good utilisation of the material used.

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Cold extrusion for complex precision parts
Cold extrusion: Questions and answers

Cold extrusion for complex precision parts

Cold extrusion is used in particular when complex component geometries are to be produced economically in high volumes. In multi-stage processes, the workpiece is transported from one forming stage to the next and gradually shaped into its final geometry. Different extrusion processes and forming operations can be combined in this way.

A key advantage lies in material efficiency: as the component geometry is predominantly created through forming rather than by material removal. Thus, the raw material can be utilised very efficiently. Compared with machining, this can significantly reduce material losses.

Cold extrusion can offer economic advantages, particularly for high production volumes. Short cycle times, high material utilisation and the ability to produce multiple forming elements within a multi-stage process can contribute to low unit costs. At the same time, work hardening influences the mechanical properties of the material.

Cold extrusion can also offer advantages from a sustainability perspective. The high material utilisation reduces material losses and can thus contribute to a more efficient use of resources.

Cold extrusion: Questions and answers

What is cold extrusion?

Cold extrusion is a non-cutting forming process in which a metal blank is plastically deformed without prior heating. Under the action of high forming forces, the material flows into the geometry defined by the tools.
What are the advantages of cold extrusion?

The key advantages include high material utilisation, short production times and the cost-effective production of large quantities. Furthermore, complex component geometries can be produced and the mechanical properties of the material can be influenced through work hardening.
How does cold extrusion affect the strength of the material?

Plastic deformation causes the material to undergo work hardening. This typically results in an increase in strength and hardness, whilst the remaining plastic deformability decreases.
When is cold extrusion cost-effective?

The process is particularly cost-effective for large production volumes. High production rates and the efficient use of raw material can help to keep unit costs low.
Is cold extrusion material-efficient?

Yes. In cold extrusion, the component geometry is predominantly created through forming rather than material removal. This allows the raw material to be utilised very efficiently and reduces material loss compared with many machining processes.

Cold extrusion

Cold extrusion for complex precision parts

Cold extrusion: Questions and answers

What is cold extrusion?

What are the advantages of cold extrusion?

How does cold extrusion affect the strength of the material?

When is cold extrusion cost-effective?

Is cold extrusion material-efficient?