The power of friction welding! Fast joining time and small heat-affected zones!
Friction welding is a solid-state welding process that generates heat through mechanical friction between workpieces in relative motion to one another, with the addition of a lateral force called “upset” to plastically displace and fuse the materials. Technically, because no melt occurs, friction welding is not actually a welding process in the traditional sense, but a forging technique. However, due to the similarities between these techniques and traditional welding, the term has become common.
This machine uses spin friction to weld these two objects in less than a minute, and is mostly used on metals that don’t weld together to well. Before welding one of the work pieces is attached to the rotating chuck along with a flywheel of a given weight. The piece is then spun up to a high rate of rotation to store the required energy in the flywheel. Once spinning at the proper speed, the motor is removed and the pieces forced together under pressure. The force is kept on the pieces after the spinning stops to allow the weld to “set”. This technique is also known as inertia welding, rotational welding or inertial friction welding. It only works on a straight line, and is really impressive how fast that rotation stops. Science is amazing, isn’t it?