• Advanced Joining Technologies – Friction Stir Welding of High-Strength Alloys

    Keystone has developed and is applying methods for Friction Stir and Thermal Stir Welding of aluminum, titanium, and nickel alloy structures. Keystone has made some of the longest titanium friction stir welds in industry using methods developed for plate material up to 0.75” thick. Keystone has applied this capability to the fabrication of advanced integrated airframe structures and ship hull structures related to both DOD and private vessels. Innovative FSW methods can be applied to airframe, marine, gas storage tanks, and other fabricated structures for low-distortion, high joint strength requirements.

    Keystone has access to the Friction Stir Welding equipment at NASA Marshall Space Flight Center and the Michoud Assembly Facility through Space Act Agreements and can conduct significant development and low-level production using these assets.

  • Example of Thermal Stir Welding of Thick Titanium Plate for Structural Components.


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    Friction Stir Welding of Long Joints in Titanium Plate Material for a Marine Vessel Application.