Throughout history and all cultures, Moss Agate has been known as the crystal of gardeners and agriculture. It was considered a miraculous healing stone for tribal priests of the past, giving them power to interact with our human organic system, and was used as a talisman to make warriors strong and victorious.
FSW has been used to weld many softer materials (aluminum, copper, magnesium, etc.) for over a decade, and has more recently shown promise for welding harder metal alloys (steels, titanium, and nickel). Shown in Figure 4 is a typical friction stir weld made on Â¾-in. (19-mm) thick high-strength steel. Research is currently underway to evaluate tool life and weld properties for FSW of steel. EWI has been working to advance the friction welding processes for nearly 25 years.
An investigation has been done to check the. joint between welded plates from the back side in terms. of gap measurement. Friction stir welding has been. performed by considering parameters like pin length. (mm), shoulder diameter (mm), welding speed. (mm/min), tool speed (rpm). On the basis of opposite. side of welded plates, observation of gap has been done. in terms of joining efficiency.