Welded Solid Helical Fin Tube

Welded Solid Helical Fin Tube for Heat Exchanger

A welded solid helical fin tube is a heat exchange element that connects fins to a base tube through welding. It is widely used in boiler economizers, air preheaters, and industrial heat exchange equipment.

Welded Solid Helical Fin Tube Manufacturing Process

The main process used is high-frequency resistance welding:

High-frequency resistance welding uses high-frequency current to generate resistance heat to melt the metals on the contact surface, and then applies pressure to complete the weld. It is suitable for materials such as carbon steel and stainless steel.

Welded Solid Helical Fin Tube Structural Features

The fins are welded to the base tube, resulting in a weld seam.

Common materials include carbon steel and stainless steel (such as 304 and 316L), which offer superior corrosion resistance to carbon steel.
The fin pitch is typically 3-8mm, and the height is 15-25mm, adjustable to meet specific requirements.

The main structure of a welded solid helical fin tube consists of a base tube and fins helically wrapped around it. The base tube is often made of high-quality steel pipe, which offers excellent mechanical strength and can withstand certain pressure and temperature fluctuations, providing solid support for the entire heat dissipation structure. Its smooth interior facilitates the smooth flow of fluids (such as hot water, steam, and other heat media) within the tube, reducing energy loss.

The spiral fins are a key heat dissipation component of this product. They are tightly and regularly wound around the base tube surface in a spiral pattern. This unique distribution significantly increases the heat dissipation area.

Compared to ordinary plain tubes, spiral fin tubes offer a significantly increased heat dissipation area by several times or even more, creating favorable conditions for rapid heat dissipation. The fins and base tube are tightly connected by welding, ensuring a smooth heat conduction path and minimal thermal resistance, ensuring efficient heat transfer from the base tube to the fins and then to the surrounding environment.

Welded Solid Helical Fin Tube Manufacturing Process

Welded Solid Helical Fin Tubes require rigorous and meticulous manufacturing. The first step is pre-treatment of the base tube. The steel tube must be cleaned and derusted to ensure a clean and smooth surface, laying a good foundation for subsequent welding.

Fin processing is also crucial

Metal materials with excellent thermal conductivity, such as aluminum, copper, or mild steel, are typically selected and processed into thin sheets of specific specifications. These sheets are then wound into a spiral shape using specialized equipment. During the fin winding process, parameters such as fin spacing, pitch, and winding angle must be precisely controlled to ensure uniform fin distribution and compliance with design requirements.

Welding is a key step in determining product quality

Advanced welding techniques, such as high-frequency welding and argon arc welding, are used to securely weld the spiral fins to the base tube surface. Parameters such as welding current, voltage, and speed must be strictly controlled during the welding process to ensure uniform and secure welds, free of defects such as cold or leaky welds.

High-quality welding not only ensures a tight connection between the fins and the base tube but also effectively enhances the structural strength and stability of the entire fin tube.

Performance Advantages of Welded Solid Helical Fin Tubes

1. Welded Solid Helical Fin Tubes offer exceptional heat dissipation performance

The large spiral fins significantly enhance heat dissipation, rapidly dissipating heat from the heat medium within the tube into the surrounding air, significantly improving heat dissipation efficiency.

This enables faster heat exchange under the same heat load, meeting the needs of rapid heating or cooling in various applications.

2. High heat conduction efficiency

Thanks to the excellent welded connection between the fins and the base tube, heat is rapidly transferred from the base tube to the fins, reducing heat loss during the transfer process. This feature enables the fin tube to maintain stable and efficient heat dissipation performance even with large fluctuations in the heat medium temperature.

3. Welded Solid Helical Fin Tubes offer high mechanical strength and stability

The high-quality base tube material and robust welding process ensure that they can withstand certain pressures, vibrations, and shocks, and are not susceptible to deformation or damage. Whether in high-temperature, high-pressure industrial environments or more complex civilian applications, Welded Solid Helical Fin Tubes operate reliably, reducing equipment failures and maintenance costs, and extending their service life.

Welded Solid Helical Fin Tube Applications

Industrial Heat Exchange: Conventional applications such as air conditioning systems and chemical cooling.

High-temperature, high-pressure applications: Equipment such as boiler economizers and superheaters.

Special Applications: Heat exchange systems involving corrosive media require stainless steel.

In the industrial sector, Welded Solid Helical Fin Tubes are widely used in various heat exchange equipment.

For example, in chemical production, they are used to cool high-temperature materials within reactors, ensuring that chemical reactions proceed at optimal temperatures. In the power industry, they are used in power plant condensers, air coolers, and other equipment to achieve efficient heat transfer and dissipation.

Welded Solid Helical Fin Tubes also play a vital role in HVAC systems.

It can serve as a core component in radiators, providing efficient heating services for buildings. In air conditioner condensers and evaporators, it can also improve the cooling or heating efficiency of air conditioning systems through efficient heat exchange, reducing energy consumption.

In the agricultural sector, some large-scale agricultural product drying equipment also uses welded solid helical fin tubes.

Through efficient heat dissipation, it quickly raises the temperature of the drying space, enabling rapid drying of grains, fruits, and vegetables. It also ensures uniform temperature during the drying process, preventing damage to the produce due to localized overheating and improving drying quality.