Cold Forging

Cold forging is a manufacturing process where a bar stock is inserted into a die and squeezed with a second closed die. The deformation starts at room temperature and changes the shape and size of the initial part until it has assumed the shape of the die. At this final step, the part can reach a temperature of up to 250°C, since the friction strain rates are very high during deformation.

The process requires high-resistance dies and high-duty steel, usually reinforced by retaining rings. Even if these dies are quite expansive compared to hot forging dies, their life time is much higher, leading to a competitive cost per unit. However, this can only be achieved with a suited design and efficient forging process, thanks to excellent engineering skills.

Cold Forged Steel Grades

Not all steel grades can be cold forged. Carbon content must be below 0,5%, and the strain hardening exponent must be acceptable. Usually, the mechanical properties are enhanced by the strain hardening, and therefore parts don’t need post forging full heat treatment cycle, including austenitization, quenching and annealing. This leads to cost savings, especially significant in the high-volume production of small automotive components such as fasteners.

Cold Forging Benefits

This is a highly automated manufacturing process and parts can be made economically. Another benefit of cold forging is the lack of grain growth and therefore perfectly aligned to the shape of the part metal grains with an exceptionally strong and resistant surface.

 

After years of experience, technology research and investment Setforge owns best machinery and tooling for cold forging equipped with most precisely created dies. We are one of the market leaders in the manufacturing of cold extruded shafts with up to 25 kg weight and 800 mm length. Cold forging enables the manufacture of net shape or near net shape parts with a tolerance of tenths of millimeters in diameter, which makes the post forging machining especially cost efficient.


Our Expertise: 

Global Manufacturing

Setforge Extrusion
(for medium and small batch production)

Setforge Near Net
( for high-volume serial parts)

Technical Characteristics

Material:

  • steel
  • non-ferrous heavy metals
  • stainless steel
  • round bars or wire coils
  • aluminium

 

Equipment:

  • mechanical presses
  • hydraulic presses
  • servomotor presses

 

Shaping and Tolerances:

  • limite shapes
  • tight tolerances between 0.2 mm and 0.75 mm
  • tolerance classes between IT 7 and IT 11
  • surface finishes of up to o Rz =20 μm

 

Cold Forged Parts

Do you need a similar component?

Over the years, Farinia Group has taken on new and tough challenges and built a solid expertise in the manufacturing of high-quality parts.

To ensure the success of your projects, we deliver state-of-art engineering & manufacturing, whether your application requires:

  • Forging
  • Casting
  • Machining / Finishing
  • Metal Additive Manufacturing