Hot Upset Forming and Riveting - by Orbitform

Orbitform's Hot Upset process uses heat and pressure to form hardened rivets and parts, providing greater hole-fill, increased push-out force, high torque, and an overall tighter joint. With this process, you can actually form a round fastener into a square hole. Orbitform is the only assembly equipment manufacturer to apply Hot Upset technology as an assembly process.

[@Shaker626]

So it's like electric hot riveting?