Also known as spun-rim manufacturing, flow-forming starts off like low-pressure casting but finishes with a whole lot of heat and a series of steel rollers that finalize the wheel's shape.

Maritime transportation is responsible for nearly 90% of global overseas trade. Modern shipboard power systems integrate ...

Workers assembling computer-driven robots and flow-forming machines at a new General Dynamics artillery ammunition factory in Mesquite, Texas. Desiree Rios for The New York Times ...