Flow-forming

In the Flowform process, the rim base of the cast rim blank is rolled out in an additional production step under the influence of heat of up to 350°C. By rolling out, the material is compacted, giving it greater strength and stability. This means that the wall thicknesses in the rim well can be reduced, which has a positive effect on the weight of the rim. With this production technique, it is possible to reduce the volume in the rim well by up to 50%. This considerable weight saving of approx. 10% compared to conventionally cast rims has a positive effect on consumption and therefore also on the environment.

  • 1. Aluminum A356

  • 2. Melting

  • <tc>3. Casting</tc>

  • 4. Flow forming

  • 5. T6 heat treatment

  • 6. Mechanical processing

  • 7. Inspections (tightness, etc.)

  • 8. Paintwork

  • 9. Internal strength tests

<tc>The advantages of the flow forming</tc>

The first main benefit here is a lighter wheel because less material is used. Different flow forming techniques and manufacturing processes result in a wheel that’s anywhere from 15% to 25% lighter than a cast wheel. 

The second is increased strength. The flow forming process both compresses and stretches the metal, changing its composition and increasing its tensile strength. This leads to increased shock resistance and a higher load capacity.

<tc>Applications for flow formed wheels include:</tc>

- -Everyday driving 

- -Casual racers in smaller cars

- -Performance drivers who don’t require as heavy a load capacity.