Fin Tube Heat Exchanger Manufacturing Process Classification

According to its producing process, Fin tube heat exchangers can classify their fin tubes into integral fin tubes, welded fin tubes, high-frequency welded fin tubes, and mechanically connected fin tubes.

1. The integral fin tube is made by casting, machining or rolling. The fin and the tube are integrated.

2. Welded fin tubes are mainly manufactured by processes such as brazing or inert gas shielded welding. The modern welding process can connect the fins of different materials, and can make the fin tube simple, economical, and has good heat transfer and mechanical properties. Because the residue in the weld is not conducive to heat transfer and may cause fracture, so the quality of the welding process should be paid attention to when producing such fin tubes.

3. The high-frequency welding fin tube mainly uses the high-frequency electrical induction generated by its high-frequency generator, so that the surface of the tube and the fins can be exposed to high temperature, and the two can be melted within a range of about 10 μm. The pressure connects the fins to the tube. No flux and no solder, simple manufacturing, high productivity, excellent heat transfer and mechanical properties.

4. The fin tube heat exchanger mainly adopts its mechanical connection. When it is used, it usually adopts three types of its wound sheet type, mosaic type, sleeve type or string type. The finned fin tube is simple to manufacture. The metal band is mechanically or welded around one end of the tube. The metal band is tightly wound on the outer wall of the tube by the torque of the tube. The other end is fixed to form a finned fin tube. The material of the winding sheet may be copper tape, steel tape or aluminum tape.