In general, different finned tube products use different manufacturing processes.
According to the production process, it can be mainly divided into integral finned tubes, welded finned tubes, high-frequency welded finned tubes and mechanically connected finned tubes.
Among them, the integral finned tube is formed by casting, machining or rolling, and the fin and the tube are integrated. Welded finned tubes are manufactured using processes such as brazing or inert gas shielded welding.
Modern welding technology can connect fins of different materials together, and can make finned tubes simple and economical, with good heat transfer and mechanical properties, and has been widely used.
It should be noted that in the process of producing this type of finned tube products, it is necessary to ensure the quality of the welding process.
The high-frequency finned tube uses the high-frequency electric induction generated by the high-frequency generator to generate high temperature at the contact between the surface of the tube and the fins, and melts the two within a depth range of about 10 μm, and then pressurizes the fins.
Integrate with the tube. No flux, no solder, simple manufacture, high productivity, excellent heat transfer and mechanical properties.
From the overall analysis, in fact, the high-frequency welded finned tube is an ideal product, which has been recognized and used by the majority of users.
There are usually three types of mechanically connected finned tubes: winding type, mosaic type, sleeve type or serial type. Wrapped finned tubes are easy to manufacture.
The metal strip is fixed around one end of the tube by mechanical or welding methods, and the metal strip is tightly wound around the outer wall of the tube by the rotating torque of the tube, and the other end is fixed to form a wound finned tube.