¿Qué es el tubo con aletas sólidas HFW?

Tubos con aletas sólidas HFW, abreviatura de tubo con aletas sólidas en espiral helicoidal soldado por alta frecuencia. Los tubos con aletas sólidas HFW se fabrican mediante envoltura helicoidal y tira de aletas de soldadura continua en el tubo.

¿Cómo producir tubos con aletas en espiral soldados por alta frecuencia?

El tubo con aletas en espiral soldado de alta frecuencia utiliza el efecto de piel y el efecto de proximidad de la corriente de alta frecuencia para calentar la tira de acero y la superficie exterior del tubo de acero hasta el estado plástico o fusión, mientras la tira de acero se enrolla alrededor del tubo de acero. La soldadura se completa bajo cierta presión cuando se enrolla la tira de acero. Este tipo de soldadura de alta frecuencia es una soldadura en fase sólida. En comparación con la incrustación, la soldadura fuerte (o la galvanización en caliente en general) y otros métodos, es más avanzado en términos de calidad del producto (alta tasa de soldadura de aletas, hasta 95%), productividad y automatización.

 Tamaño y material del tubo con aletas sólidas HFW :

Helical Solid Finned Tubes are manufacturer by helically wrapping continuous fin strip on tube. HF Resistance Welding Usually Employs Frequency Of 400 kHz. The fin wound around the tube And Continuous weld. The fin strip is wounded spirally onto the tube and welded continuously with a high frequency electrical process to the base tube along the spiral root. The fin strip held under tension and confined laterally as it is formed around the tube, thereby ensuring that the strip is in forceful contact with the base tube surface. A continuous weld is applied at the point where the fin strip first begins to bend around the tube diameter, using the gas metal arc welding process.

For a given tube or pipe size, the desired heat transfer surface area per unit length of tube can be obtained by specifying the appropriate fin height, fin thickness and /or number of fins per meter of length.  

Characteristics of High Frequency Welded Solid Finned Tubes

1. Because of fast welding speed and strong self cooling effect of weldments, not only the heat affected zone is small, but also oxidation is not easy to occur, so the microstructure and properties of the weld are very good.

2. Corrosion resistance, abrasion resistance, low contact thermal resistance, high stability, and anti ash ability.

3. Large heat exchange area.

HFW Solid Finned Tube Advantages:

1. The welded steel finned tube configuration can be used for any practically heat exchanger application, and is particularly suited to high temperature and high pressure applications.   The important features of this configuration are efficient, effective bond of fin to tube under all conditions of temperature and pressure, and ability to withstand high fin-side temperatures.

2. A continuous helical fin is attached to the base tube by high frequency electric resistance welding in order to give an efficient and thermally reliable bond.

3. High frequency welded helical spiral solid finned tube provide the designer with high thermal efficiency and compact design solutions for a whole range of heat exchangers where clean flue gases are used. Helical finned Tubes are manufactured in both Solid and Serrated type.

HFW Solid Finned Tube, High Frequency Welded Solid Fin Tube

High Frequency Welded Solid Fin Tube Applications: 

1. The High Frequency Welded Solid Fin Tube have been widely used in heat recovery of boiler economizers, air preheaters and waste heat boilers, as well as heat exchangers in various fields such as chemical and pressure vessels.

2. High Frequency Welded Solid Fin Tube is also widely used in waste heat recovery of electric power, metallurgy, cement industry and petrochemical industry.

In order to forward you a promt offer we would be pleased to receive you detailed enquiry including:

• Base tube material

• Base tube size (OD x WT x Length)

• Fin material

• Fin type

• Fin diameter or height

• Fin thickness

• Fins per inch, meter or fin pitch

• Lenght of plain, unfinned ends

• Finned Tube Quantity

(Fabricación adicional, como doblar o soldar los tubos en una placa de tubos o un conjunto)