Cold Forging & Forming

This group of processes involves the application of pressure to material whilst still in the solid state without the input of heat. Pressure is applied via Dies, Moulds or Punches and Rams.

The main variable distinguishing between these processes is the mould tool configuration, and it’s impact on the forming mechanism and the final component. For example, with Cold Forging, variable section thicknesses throughout a component are common, whilst Impact Extrusion produces thin, constant wall thickness components from solid preforms or slugs of material, the output being more akin to a deep drawn metal pressing.

The Mechanism of "Heading" or Upset Forging appears under both Hot and Cold Forging, as the material deformation is localised, the application has a wide range, with the level of deformation, strength of materials and required integrity of the finished component all playing a part in selecting either Hot or Cold Heading.

• • Cold Forging
• • Cold Upset Forging & Heading
• • Impact Extrusion