How to determine the power of the индукционный нагрев промежуточной частоты pipe bender?

Large-diameter steel pipes must be heated for bending and forming. The use of intermediate frequency induction heating to locally heat the steel pipe has its unique advantages and cannot be replaced by other heating methods.

The frequency induction heating pipe bending equipment in the picture is composed of a pipe bending machine, a power supply and an inductor for intermediate frequency induction heating. The sensor is installed at the front end of the pipe bender. When the power is supplied for induction heating, the pipe bender also starts to slowly rotate the pipe. Since the number of turns of the induction coil is small, the inductor is connected to an intermediate frequency step-down transformer.

The picture shows the inductor for medium-frequency induction heating bends of large-diameter steel pipes, which is made of rectangular pure copper pipes. In order to improve thermal efficiency, the induction coil is lined with a heat-resistant and heat-insulating layer. Because the number of turns of the induction coil is small, the width of the inductor is narrow, the width of the heated part of the steel pipe is not large, the deformation of the pipe bender during bending is not large, and the steel pipe will not be deformed.

Как правило, диаметр стальной трубы большого диаметра составляет Φ700-Φ1200 мм, толщина стенки трубы менее 40 мм, а частота тока может составлять 1000-2500 Гц. Текущая частота может быть рассчитана в зависимости от диаметра стальной трубы, толщины стенки и температуры нагрева. Мощность, необходимая для нагрева, определяется в зависимости от температуры нагрева и скорости движения стальной трубы при ее изгибе.