Induction Tube welding Machine

Induction Tube Welding Machine

Induction tube welding is a high-speed, non-contact process used primarily to create longitudinal seams in metal pipes and tubes. It leverages electromagnetic induction to heat the edges of a formed metal strip to a forging temperature before pressing them together to form a solid-state bond.

• • Electromagnetic Induction: A high-frequency alternating current flows through an induction coil, creating an oscillating magnetic field.
  • Skin and Proximity Effects: At high frequencies, current concentrates on the surface (skin effect) and intensifies where edges are closest (proximity effect), ensuring heat is focused exactly where the weld is needed.
  • The “Vee” Geometry: As the formed strip moves toward the weld point, its edges form a “V” shape. Current travels along these edges, reaching peak temperature at the apex.
  • Solid-State Forge: Unlike arc welding, this process often doesn’t fully melt the base metal. Instead, pressure rolls “squeeze” the heated edges together, extruding impurities and forming a high-integrity forge weld.