What is Friction Stir Welding (FSW)?

Friction Stir Welding
Friction-stir welding (FSW) is a solid-state joining process (the metal is not melted) that uses a third body tool to join two facing surfaces. Heat is generated between the tool and material which leads to a very soft region near the FSW tool. It then mechanically intermixes the two pieces of metal at the place of the joint, then the softened metal (due to the elevated temperature) can be joined using mechanical pressure (which is applied by the tool), much like joining clay, or dough. It is primarily used on aluminium, and most often on extruded aluminium (non-heat treatable alloys), and on structures which need superior weld strength without a post weld heat treatment.

It was invented and experimentally proven at The Welding Institute UK in December 1991. TWI holds patents on the process, the first being the most descriptive.

Looking for tutor?
Try here

Are you tutor?
Just add your details and get your personal web page absolutely free !!

Others will be able to find you, teaching is a great help

Register As Tutor

Daily new topic
If we are interested to learn many things then there is only one way; it is early and continuous learning.

Here you will find daily one new interesting topic for your knowledge needs.

We should know many topics, so we can correlate our learning, view and imagination.

Be ready for tomorrow.