Talk:Friction welding

Hardening?
How is it that these processes do not lead to significant work hardening? —Ben FrantzDale 17:06, 19 March 2007 (UTC)
 * It depends on the materials to weld. The process produces only a little amount of heat energy compared to fusion welding. The temperatures are approximately 70% to 80% of melting temperature, so the area of microstructure change is very thin. But some very special materials need annealing after FW.--UtzOnBikeEN (talk) 18:55, 11 August 2008 (UTC)

Definition
"mechanical friction between a moving workpiece and a stationary component": There are FW processes where both components are moving to achieve higher friction speeds.--UtzOnBikeEN (talk) 19:01, 11 August 2008 (UTC)

Some other remarks
Ultrasonic welding is a sort of friction welding with movements in order of some µm.

Metal techniques/Thermoplastic techniques: It is not possible (anymore) to separate these techniques as it is done here. So are ultrasonic welding (USW) and some types of (multi) orbital friction welding (MOFW) applicable to both kinds of material. It is just a matter of machine force. There are metal USW and MOFW machines used in the industry.

Orbital friction welding is NOT similar to spin welding: The workpiece is moving in a small circle WITHOUT rotating. The advantage is the constant and even speed on every point of the welding surface. With spin welding the speed changes with the radius, with linear friction welding the speed is not time constant.

Neeme Vaino (talk) 12:19, 16 August 2012 (UTC) Powder-actuated tool is also considered to be friction welding as the nail welds to base as it enters the metal.

--UtzOnBikeEN (talk) 19:30, 11 August 2008 (UTC)