Induction Pipe Welding
Induction tube welding is a high-frequency pressure welding process where the tube edges are heated and upset by induced eddy currents. It enables fast longitudinal seam production at high speeds.
Physicochemical working principle
Induction tube welding uses high-frequency electric fields to heat the tube edges. The eddy currents induce electromagnetic fields that act on the metal and heat it. In parallel, mechanical pressure is applied to the edges to press them together.
Metallurgical relevance & risks in welding
The rapid heating and cooling can lead to uneven temperature distributions, posing risks to the structure and hardness of the seam. Incorrect parameters can lead to hot cracks or incomplete joints.
Workshop practice & action instructions
To carry out induction tube welding successfully, the tube edges must be clean and smooth. The frequency and power of the induction unit as well as the pressure must be precisely adjusted. Continuous monitoring of the temperature distribution is essential to ensure uniform joints.