Rotary Friction Welding

We are currently fabricating two mammoth steel weldments that will be integral parts of the largest Rotary Friction Welder ever built. This machine will have twice the inertia capacity of any other machine on the planet!
Rotary friction welding is a joining process which involves holding one part stationary while rotating the other. Under extreme pressure, the two parts are forced together, creating sufficient friction and heat to reach the forging temperature without melting. When the weld interface cools, the two parts are bonded at the molecular level and the welding process is complete.
This enormous machine will be used by the Aerospace Industry in the United States to build next generation jet engines that will burn fuel hotter than ever before. Hotter engines create higher thrust capacity, while at the same time reducing fuel consumption and overall costs.
The two weldments being manufactured at J & J are the Lower Base and the Head Stock. The Lower Base stands 42” tall x 134” wide x 368” long and weighs 126,000 pounds. The Head Stock will be 70” x 172” x 174” and weigh 165,000 pounds. Almost ten thousand pounds of welding wire will be used by our AWS D1.1 certified welders to join A36 steel plate up to 21” thick. Together, these parts will require approximately 1,600 labor hours to complete.
Welding the Lower BaseLower Base near completion
Head Stock Welded FabricationMoving the Head Stock

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