Laser welding fin tube is used for civil natural gas wall hanging furnace and boiler. It is made in Germany. It is very popular in China. But in Europe, it has more than ten years of history. Its advantages depend on zero contact heat transfer coefficient. Compared with high frequency welding machine, it has the characteristics of large wing ratio, light weight, compact volume of assembled heat exchanger, more green and environmental protection, and national emission regulations
There are many types of laser welded fin tubes in China, and the key is high frequency welding finned tubes. Although compared with embedded and fiber welding, it is better in product quality and production automation technology, but because the root of high frequency welded finned tubes cannot be penetrated and the root is wrinkled, As a result, there are many deficiencies in heat transfer efficiency and dust prevention convenience of high frequency welded finned tubes. In view of the above reasons and in order to respond to the national policy of energy conservation and consumption reduction.
Laser welding finned tube is a more excellent technical commodity, which has irreplaceable advantages
1：The thickness of the base tube can be 0.8-1.5mm, and the thickness of the plate fin type can be 0.3-1MM. Compared with the gender processing technology, the cost of raw materials is greatly saved.
2：High penetration rate can avoid void erosion, increase service life and reduce heat transfer coefficient.
3：Improve the limit of raw materials, and use different raw materials to carry out production and processing.
4：Convenient for secondary production and processing, fan coil and elbow can be carried out immediately.
5：The welding heat hazard zone of electric welding is small, and the transformation of metallographic analysis is small, which makes the production and processing of finned tube become a hot spot.
The materials used for heat exchange and cooling pipes and condensing pipes should have excellent heat conduction characteristics, as well as excellent corrosion resistance, flushing resistance, wear resistance and corrosion resistance, as well as excellent compressive strength, bending stiffness and ductility, so as to facilitate production and processing
