High efficiency of spiral finned tube and several manufacturing methods

2022-11-02

The Spiral Finned Tube is very simple and economical in the process of installation. Its equipment length can reach 6 meters, reducing the connection points, making the installation more economical and fast, and reducing the probability of water leakage at the connection. The maintenance is simple. After the installation of high-frequency welding spiral Finned Tube, the maintenance is basically unnecessary.

The spiral finned tube has High Efficiency. Its heat dissipation area is more than 8 times that of the smooth tube when it is used. During the operation, its interior will be more smooth, its internal water flow resistance is small, and its service life is long when it is operated. The mechanical strength of the finned tube is high, and the tensile strength is more than 200Mpa. The inside and outside of the tube are all hot-dip galvanized. Material of weldable fins: carbon steel, corrosion-resistant steel, Stainless steel, alloy steel. Form of weldable fins: solid teeth, open teeth.

Coil Fin Tube

Spiral Finned Tubes can be manufactured by various methods in the process of manufacturing. At present, finned tubes used in heat exchange equipment such as boilers and pressure vessels mainly have the following manufacturing methods:

High frequency resistance welding spiral finned tube

High frequency resistance welding of spiral finned tube is to introduce high power high-frequency current into the weldment, use the resistance heat generated by the current passing through the contact surface of the weldment joint and the adjacent area to make the welding contact surface reach the molten or semi molten plastic state, and then apply appropriate pressure to the welding contact surface to complete the welding of finned tube.

Fin Tube

Brazed spiral finned tube

Brazing spiral finned tubes is to fill a filler metal with a melting point lower than that of the weldment between the weldments, and then heat the brazing temperature. When the weldment is not melted, the filler metal will be wetted and brazed, and the brazed joint will be formed depending on the expansion of the contact part of the weldment, thus completing the welding of spiral finned tubes.

The spiral finned tube is mainly an integral spiral finned tube that can be formed at one time after the tube is squeezed and rolled by using thick wall tubes under the condition of medium frequency continuous heating. See the current method for manufacturing finned tubes. The integral spiral finned tube developed by a domestic company and the self-made integral finned tube manufacturing equipment have been applied.

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