31 Oct,2025
Friction Welding
Friction welding is a method of welding that uses the heat generated by friction between the contact surfaces of workpieces as a heat source to cause plastic deformation of the workpieces under pressure.Under pressure, specifically under constant or increasing pressure and torque, the relative motion between the welded contact surfaces generates frictional heat and plastic deformation heat in the friction surface and its vicinity, causing the temperature in the vicinity to rise to a temperature range close to but generally below the melting point.The material's deformation resistance decreases, its plasticity increases, and the oxide film at the interface breaks down. Under the action of upsetting pressure, the material undergoes plastic deformation and flow, and solid-state welding is achieved through molecular diffusion and recrystallization at the interface.
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