Connect, January/February 1999
Identify yourself with FSW
In a recent refinement to friction stir welding, brand identification can now be self-embossed during the process. This is done by using an inversely engraved support plate (Fig. 1) carrying the required information - company name and logo for example. During the welding process, softened material is moulded into the mirror image (Fig. 2). This technique can be used for quality control as well by embossing datum witness marks at pre-selected intervals
The effectiveness of this type of tool for thick plate welding is illustrated by a well-shaped weld profile in double-sided 50mm thick aluminium alloy (Fig. 5).
Additionally, the WhorlT configuration can be altered to suit different materials by changing the inclination of the continuous spiral ridge.
WhorlT is a trademark of TWI.
For more information on new developments in friction stir welding, Please contact us.