The finned tube is a kind of electronic tube, and the electronic tube is a voltage amplifying element, the output impedance is very high, and the finned tube contact welding is a welding process of current heating, which requires a power source with low input impedance. Therefore, the impedance of the two is not matched, and it is difficult to output more electric power. Only by changing the ratio of the tank circuit and adjusting the relative position of the contacts properly can the output be obtained.

The finned tube must provide a basic power consumption in order to work. Therefore, reducing the standby time will save power, thereby reducing production costs. The actual standby time of the finned tube production process is more than 50%. Choosing high-performance equipment will greatly reduce the standby time, resulting in higher efficiency and lower cost.

For the same strip steel, the probability of strip breakage is related to the welding structure. When the finned tube bounces, it is also buffered by springs. The potential energy of elasticity is proportional to the square of the displacement. When the displacement changes by 5 mm, the upsetting energy changes 25 times, so it is easy to break the strip and make The pinch roller is more easily damaged.

There is no spring in the pneumatic structure, and the upsetting force is mainly realized by the pressure of the gas. When the fin tube is bounced, it is buffered by the air pressure. When the displacement changes by 5 mm, the length of the cylinder is 125 mm. The amount is only 4%. It can be said that the energy change caused by this change is very small for the constant pressure gas distribution system, thereby reducing the probability of belt breakage.