Laserfin®  

 

The laser-welded finned tubes made by Schmöle are manufactured by helically winding strip onto tubes. The fin strip vertically applied to the tube is welded at it´s foot by a welding technique developed and patented by Schmöle without filler metal to the tube wall.This process provides a crevice-free weld between the strip and the tube.

The use of the Laser technique for the winding of finned tubes offers a number of advantages due to the ability of the beam to be very accurately focussed, allowing full use of the beam's high thermal capacity. These advantages are in particular:

 

  • Thin, continuous weld seam, weld seam depth about 0.2 mm

  • Small heat-affected zone avoids any deformation of the material. This results in a high stability of shape and a great accuracy of size of the welded finned tube.

  • Short heating time

  • Only slight microstructural change in tube and fin

  • High utilization of heat for forming the beam

  • High welding speed

  • No contamination of the weld seam, as the Laser-welding is carried out under a protective atmosphere

  • Increased safety because of the avoidance of crevice corrosion due to the high weld integrity between tube and fin

  • Only slight discolouration at weld site

  • Economic manufacture of high-finned tubes

laserfin tubes

The excellent bending properties of Laserfin® Tubes permit the manufacture of many special geometric forms.

more information about

Laserfin

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