Recent research and development activities at PTG Heavy Industries’ UK-based HQ have include the successful joining of exotic aerospace steel and titanium alloys using the friction-stir welding process.

"We have successfully welded both aerospace-grade steel alloy and aerospace-grade titanium in thicknesses of 3 mm and 8 mm, using our proprietary PTG fixed pin tooling techniques," comments sales manager Chris Cheetham.

"Although each presented distinct challenges, including the potential for workpiece distortion and ensuring sufficient heat transfer when blending thicker materials, these issues were overcome."