400KW IF technical parameters
Adjust the frequency as needed so that the temperature rise curve makes the welding seam even and diathermal. For equipment of different diameters and wall thicknesses, users can choose to open the number of IF equipment, which can not only achieve the purpose of annealing but also save the energy.
The three-phase power frequency current is rectified into pulsating direct current, then it becomes the smooth direct current through the filter. After that, it is converted to an IF current supply load (induction coil) within a certain frequency range by the inverter to heat the metal workpiece.
The high-frequency welding equipment and the online annealing dedicated IF heating equipment for steel pipes are centralized in the rear of the unit, which follow the sequence of unwinding → loop → forming → welding → planer tool → weld annealing → air cooling section → 300 ℃ cooling → sizing → cutting → blanking raceway → packing order.
Points: the air cooling section should be reserved according to the speed and the annealing temperature.
