When the high-frequency pipe welding machines is used to manufacture welded pipes, the design of the induction coil (inductor) often affects the production efficiency of the used high-frequency welded pipe machines. Therefore, the induction coil (inductor) affects the performance of the second-hand high-frequency welded pipe machine. The most critical factor to play. So we will introduce the design of the sensor to start from several aspects.

① The diameter of the sensor should be slightly larger than the diameter of the steel pipe, and the shape should be the same as that of the steel pipe, for example: circle to circle, square to each other, and rectangle to rectangle.

②The cooling of the inductor should consider sufficient cooling and uniform cooling to ensure rapid and efficient cooling. The cooling effect of the high-frequency pipe welding machines is better and the efficiency is higher.

③The shape of the inductor and the distance between the sensor and the steel pipe wall determine the output frequency and effective power. If the distance is too far, the frequency will be smaller, the magnetic field on the surface of the steel pipe will become weaker, and the induced current will decrease, resulting in the effective output power. Very low. ④The influence of the inductor on the operating frequency. In the following formula, U is the voltage across the matching capacitor, I is the total current output by the inverter part, f is the resonant frequency of the power supply, C is the capacitance of the matching capacitor, and N is the transformation ratio of the transformer. It can be seen from the formula out. When I, N, C, are constant, the size of f determines the size of U. When f is low, the capacitor withstand voltage U will be very high, which will cause harm to the capacitor, so the size and shape of the inductor and the cooling method Directly determine the size of the operating frequency.

Choosing a well-designed and manufactured sensor is of great significance for ensuring equipment stability, improving production efficiency, and reducing energy consumption.

As the largest energy-consuming equipment for welded pipe manufacturers,high-frequency pipe welding machines must have the basic characteristics of advanced technology, first-class service, stable performance, and high efficiency and energy saving in order to help enterprises go further and further on the road of sustainable development.