The principal interaction occurs at the weld interface between the pipes however, a secondary concern is the possibility of contact of weld flash with the side of the pipes. Understanding the friction, material properties, and heat transfer environment are important design aspects in an effective inertia welding process therefore, simulation is a helpful tool in the process design.
An important factor in the process design is control of the initial speed of the flywheel so that, when the flywheel stops, the temperature rises to just below the melting point, which in turn results in significant flow of material in the region of the weld joint. In this example the weld process is simulated, and the initial temperature rise and material plastic flow are observed. The resulting rapid rise in interface temperature is exploited to produce high-quality welds. In this weld process kinetic energy is converted rapidly to thermal energy at a frictional interface.
The specific arrangement considered is the resulting as-welded configuration shown in. This example examines the inertia friction welding process of the pipes shown in.
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