Induction Welding
A process where the heat necessary for joining is generated directly in the edge region of the workpiece through high-frequency electromagnetic induction. It is primarily used in continuous pipe manufacturing.
Induction welding basically means: current through a coil, the workpiece is in the middle and gets heated contactlessly by the magnetic field. The heat is generated directly in the material, not by friction or an arc. The advantage is that it's fast and clean because the heating is very targeted to the coil area. If the coil doesn't fit the workpiece properly or the gap isn't right, the heat becomes uneven, and you get stresses or distortion in the part. Make sure the coil matches the workpiece cross-section and the air gap is uniform everywhere. You adjust the heating power so the material heats evenly until it reaches the right welding temperature – then you join the parts, and the whole thing cools down in a controlled way.