Spin Forming Mitigates The Defects in the weld Seam of Steel Rim.

Conventionally welded steel wheel rims often suffer from weld porosity, slag inclusions and stress concentration. Cracks easily form under heavy loads and reduce rim fatigue life, presenting a persistent quality issue within the steel wheel industry. Standard post-weld grinding only improves surface finish and cannot resolve internal weld metallurgical flaws.

Spinning forming induces plastic deformation through rotary extrusion. It compacts internal microvoids, refines grain structures at welded joints and optimises stress distribution across welds and heat-affected zones, restricting microcrack growth. The process needs few adjustments to existing welding workflows and supports retrofitting on current production lines.