Friction welding is a type of pressure welding in which the two surfaces to be joined are rotated relative to each other and pressed together under suitable pressure.
Due to friction at the contact surfaces, the metal heats up, becomes ductile, and under the combined effect of heat and pressure, a cohesive, atomic-level bond is formed.

Friction welding makes it possible to assemble parts with complex geometries from simple elements.
Materials with different chemical compositions and mechanical properties can be joined within a single component — combinations that are not feasible with other welding methods. This allows expensive materials to be limited to only the areas where they are needed.

The technology is widely used across various industries, including aerospace, automotive, oil and gas, construction, agriculture, defense, electrical engineering, cutting tool manufacturing, nuclear, and general mechanical engineering.
Its capability to deliver strong, repeatable, and high-integrity joints makes it ideal for both prototype development and high-volume serial production in demanding industrial environments.