Rotary Friction Welding | American Friction Welding Uses Of Friction Welding

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American Friction Welding (AFW) is a bi-metal friction welder of near-net-shape parts with the extreme expertise of welding different metals. The company uses direct-drive rotary friction welding to deliver high precision, full-strength penetration bonds in the most demanding applications and industries. Dramatic cost savings result by reducing the amount of working material, machining, and surface finishing needed to produce finished metal components.

Rotary friction and inertia welding are a solid-state process joining two metal objects by applying rotational motion and forging pressure to the objects. High temperatures generated by friction, transform the point of contact into a plasticized state. This area is known as the weld interface. The pressure is applied to forge a metallic bond between the atoms of the objects. The overall molecular integrity of the original objects remains intact due to the narrow heat-affected zone of this technology. Friction welding provides a complete cross-sectional bond without using fluxes or filler metal. Metal spin welding or rotary welding cycle times vary by metal type, shape, and weight.

We specialize in friction welding aluminum alloy, brass, bronze, copper, nickel, silver, steel alloy, carbon steel, stainless steel, tantalum, titanium, tungsten, and many other metal alloys. One object spins at a controlled rotating speed while the other is held stationary. Friction heats the dissimilar material where they contact. It is successful in bonding two different metals where conventional means may not work. It provides a high speed, lower-cost solution to join motor shafts, axle shafts, prop shafts, gear to shaft, disc to shaft, solid round to solid round, pipe to pipe, solid round to pipe, and many other dissimilar shapes. The joining process serves as an alternative method to brazing, electron beam, explosive, and butt welding methods.

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