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Lord Fin Tube-Production of H-shaped fin tube

Whats the production process of H-shaped fin tubes?
 
The production process of H-shaped fin tubes primarily involves argon arc welding or electric welding. In this process, the fins are welded onto the outer surface of the central steel pipe using simultaneous or multiple welding techniques. During welding, thermal stress and deformation occur in both the steel pipes and fins.
 
Our company has developed an H-type fin tube automatic welding machine that consists of a base and two sets of brackets installed on the base. It also includes two sets of fin automatic blanking bins, two sets of feeding cylinders, two sets of blanking channels, two sets of horizontal pushing cylinders, and two sets of electrode clamping mechanisms.
 
Features of the H-shaped fin tube production process:
 
1. The H-shaped fin tube utilizes an innovative fin tube welding process where the fins are welded in a multi-zigzag pattern. This ensures strong and uniform welds, smooth surface finish, and eliminates issues like slag inclusion, porosity, and incomplete penetration. The penetration rate of the welds is 97%.
 
2. The multi-zigzag welding technique employed in the H-shaped fin tube reduces the local stiffness of the fin tube. As a result, it minimizes the amount of compressive plastic deformation that occurs during welding. This reduction in deformation significantly decreases the residual tensile stress near the welding seam and the residual compressive stress in the fins away from the weld. Consequently, it reduces wave deformation in the fins.
 
3. The H-shaped fin tube achieves a high penetration rate of 97%, ensuring uniform and smooth weld surfaces without any welding bumps. The expanded heating surface enhances the heat transfer coefficient. Additionally, the expanded heating surface unit possesses a self-cleaning function that helps reduce the deposition, blockage, and wear caused by smoke and dust on the heated surface. This feature is particularly beneficial in extending the service life of the heated surface.
 
Overall, the production process of H-shaped fin tubes, using our developed welding machine, ensures robust welds, reduced deformation, and improved heat transfer efficiency, ultimately contributing to a longer lifespan of the heated surface.
H-shaped fin tubes

H-shaped fin tubes

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