Aluminium coolers

Empowering performance

Aluminium coolers

NRF is a manufacturer a wide variety of aluminum cooling parts. All produced in our own European production facilities. NRF’s aluminum coolers are known for the high quality and durability. Because we manufacture all coolers by ourselves, we can a wide variety of sizes and multiple fin systems.

Our cores are manufactured by using aluminium alloys such as series 3XXX, which provides a great performance in terms of:

  • Corrosion resistance
  • Mechanical properties
  • Weldability
  • Light weightiness

5XXX and 6XXX alloys are mainly used either formed and extruded in other components such as brackets, tubes, frames, and tanks.

Soldering or brazing?

Soldering makes a joint between base metals by melting only filler material, which wets base metal surface because of capillary action. The solder melts at a temperature below 450°C

The heating sources such as torch, furnace, and induction coil are used in different steps of our process to achieve the best result in each component as well as the composition of the filler material.

  • Soldering process has a lower power input and processing temperature compared to other processes.
  • It is one of the best options to join dissimilar base materials
  • Being able to join thin-walled parts
  • Soldered joint has a minimal thermal distortion and residual stresses in the joints
  • Not needing a post-processing heat treatment
  • Brazed joint is strong and ductile. It could be as strong or even stronger than the metals being joined when a properly made brazed joint is achieved; and it is able to withstand considerable shock and vibration
  • Since base materials are not melted during brazing, they can typically retain most of their properties.
  • Brazed joints have minimal thermal distortion and residual stresses when compared to other joint methods (i.e. welding), as well as lower risk of warping.
  • Brazing of a big amount of components can be done at once and make a joint in areas where other joint process has no access to
  • The joint is made at lower temperatures than other joint methods, which means saving cost in compare with other technologies.
  • Folded Tank: Are manufactured using a piece of sheet metal that is cut and folded to make the shape of the tank we need.
  • Extruded Tank: Are manufactured using a die that has been pre-extruded to the shape we need, and we only cut to the size we require. The die is purchased from an external supplier.
  • Casted Tank: They are produced as a “injected” piece in a mold.

Offset fins

In general terms offset fins increase the heat exchangers performance, increasing the surface contact (air/water side) and making the coolers more compact. NRF has develop a different range of offset fins to be able to achieve the better performance taking in account the pressure drop from this fin.

Hemmed fins

Hemmed fins can be used to reinforce the fin. If your vehicle will experience an intensive use and will need to be cleaned periodically then we recommend this fin to withstand the test of time.

Larger fin

A larger fin pitch helps make the cleaning process faster and more effective. For example, for agriculture uses a lot of debris is trapped in the radiator which can cause a malfunction in the vehicle due to overheating. The Agrifin (which has a larger fin pitch) is perfect for an easy cleaning with a high-pressure washer.

Application: heavy duty materials, construction, agriculture vehicles, rail, gensets, special requirements.