FLOW FORMING
Flow forming is a process of plastically deforming metals by extrusion. The material flows between a mandrel set in rotation and a wheel exerts a high pressure in the axial direction. It allows to obtain cylindrical forms of low thicknesses as for example the aluminium rims proposed by Saint Jean Industries.
![Fluotournage à SJI](https://sji-preprod.ovh/wp-content/uploads/2021/06/fluo-3.jpg)
![Fluotournage à SJI](https://sji-preprod.ovh/wp-content/uploads/2021/06/fluo-1.png)
![Fluotournage à SJI](https://sji-preprod.ovh/wp-content/uploads/2021/06/fluo-2.jpg)
![Fluotournage à SJI](https://sji-preprod.ovh/wp-content/uploads/2021/06/fluo-4.jpg)
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The advantages of cold flow forming
- Reduction of thicknesses.
- Improvement of mechanical characteristics.
- Applicable for small or large series.
- Excellent dimensional accuracy
- Material saving
- No lubrication
- Reduction of machining
- Very good surface finish
our Aluminium processes
Our cobawheels™ process
![Exemple d'une jante aluminium avec le procédé Cobawheels](https://sji-preprod.ovh/wp-content/uploads/2021/08/cobapress-cobawheels-jante-aluminium-automobile.jpg)
COBAPRESS™
This process offers great design flexibility, improved mechanical characteristics, and very good fatigue resistance
![Fluotournage jantes aluminium Cobawheels](https://sji-preprod.ovh/wp-content/uploads/2021/08/cobawheels-fluotournage-jante-aluminium-automobile.jpg)
Flow forming
A process commonly used in the manufacture of cast aluminum rims, Saint Jean Wheels applies it to an extruded tube to lighten the rim bed.
![Soudage par friction jantes aluminium](https://sji-preprod.ovh/wp-content/uploads/2021/08/fsw-aluminium-jante-automobile-420p.jpg)
Friction stir welding
Used to weld the two parts of the rim, without adding metal, whatever the alloys used