About laser welding finned tubes

2022-08-16

There are many kinds of Laser Welded Finned Tubes in use. In operation, high-frequency welded Finned Tubes are mainly used. Although it is more advanced in product quality and production automation compared with inlay and brazing methods, it is difficult to weld the root of high-frequency welded finned tubes and there are wrinkles at the root, resulting in many shortcomings in heat exchange efficiency and convenient ash deposition prevention. In view of the above reasons and in response to the guidelines and policies on energy conservation and emission reduction.

Technology of laser welding Finned Tube

1. The thickness of the base tube of the laser welded Fin Tube can be 0.8-1.5 mm, and the thickness of the fin can be 0.3-1 mm, which greatly saves the material cost compared with other processes.

2. High Penetration Rate can prevent gap corrosion, prolong service life and reduce heat transfer resistance.

3. Break through the material limit and use different materials for processing.

4. It is easy for secondary processing and can be directly used for coil and elbow.

5. The welding heat affected zone is small and the metallographic change is small, which makes the processing of small diameter finned tube possible.

1000.1000 1

The materials of heat exchange tubes and condensing tubes shall have heat transfer performance, good corrosion resistance, erosion resistance and abrasion resistance, and good strength, rigidity and plasticity, which are easy to process and manufacture.

Laser welded finned tubes can effectively detect the smooth transition of the tube connection to a certain extent. The nozzle shall be more than 100mm higher than the pile top, and the nozzle height of each detection tube shall be consistent. The lower end of the tube shall be closed and the upper end shall be covered. There shall be no foreign matters in the tube and the tube body shall not be damaged.

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