Laser welded finned tube

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Murphy experts explain in this article about principle of laser welding and it's advantages and applications.

 Laser welding is a welding method that irradiates high-intensity laser beam to the metal surface and converts the metal into heat through the interaction between the laser and the metal so that the metal melts and forms cooling crystallization.

 Stainless steel laser-welded spiral finned tube:
https://szmurphy.en.alibaba.com/product/62416444850-811592052/Murphy_Copper_finned_tubes_laser_welding_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Solar_Water_Heating.html?spm=a2700.icbuShop.41413.11.68016a21riWLwn
1. High degree of automation. The automatic finned laser welding machine can complete the welding in one time.
Laser welding, high fastness, high binding force. Laser welding is metallurgical bonding, the welding strength is greater than 600MPa.
3. The laser welding machine has high precision, and can weld the finned tube of 8 meters long, with the precision up to 0.05mm.
4. Laser welding can greatly improve the heat transfer coefficient.
5. The length of the laser-welded fin segment is less than or equal to 2.5mm, and the heat dissipation area is increased by nearly 50% compared with the high-frequency welded tube (distance greater than or equal to 4.5mm), which greatly reduces the material of the tube and the volume change of the heat exchanger.
Stainless steel laser welded spiral finned tube

 Advantages of laser welded finned tube:
1. Thin continuous wet seam
2. Small heat-affected zone
3. Short heating time
4. There were only slight microstructure changes in the tubes and fins
5. High heat forms seams
6. High welding speed
7. Laser welding is conducted in a protective atmosphere, so there are no impurities in the weld

 Application of laser welded finned tube
1.Power plants
2.The chemical industry
3.Heat recovery plant
4.Hot industry

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