Case Study: Damping Piston

Process: Conventional Press & Sinter (PM)

Material: FC-0208-50 copper steel

Density: 6.7 g/cm³

Surface finish: 125-250 Ra

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End Use and Function

The damping piston in an automotive shock absorber controls fluid flow, ensuring a smooth and stable vehicle ride.

Fabrication

The molding process for the damping piston involves several independent press functions to achieve precise size and weight, as conventional methods are inadequate. Special handling applications are employed throughout. Secondary machining refines complex features using a specialty lathe. A de-burring operation ensures a critical surface finish of 125–250 Ra. Post-production, the pistons are custom-packaged to protect their finish. MPIF FC-0208-50 material is ideal due to its excellent properties and cost-effectiveness.

Results

This manufacturing method enables near-net-shape production, efficiently creating intricate designs that would be uneconomical with alternative manufacturing techniques, ensuring optimal fluid control for vehicle stability.