Lord Fin Tube-Production of H-shaped fin tube
Production process of H-shaped fin tube
The main production method of H-shaped fin tube is argon arc welding or electric welding, in which the fins are welded on the outside of the central steel pipe by means of simultaneous or multiple welding. Steel pipes and fins will produce thermal stress and deformation during welding.
The H-type fin tube automatic welding machine developed by our company includes 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, and two sets of Horizontal pushing cylinder, two sets of electrode clamping mechanism.
1. The H-shaped fin tube
adopts a new fin tube welding process, and the fin welding part is contacted with multiple zigzags, so that the welding is firm, the welding shape is uniform and the surface is smooth, there is no slag inclusion, porosity, welding, and the penetration rate is 97%.
2. The welding part of the H-shaped fin tube adopts multiple zigzag methods, which is equivalent to reducing the local stiffness of the fin tube, thereby reducing the amount of compressive plastic deformation generated during the welding process, and making the longitudinal residual tensile stress near the welding seam. The reduction also greatly reduces the residual compressive stress of the fins far away from the weld, so the wave deformation of the fins is significantly reduced.
3. The penetration rate of the H-shaped finned tube is 97%, and the weld surface is uniform and smooth without welding bumps. The expansion of the heating surface can increase the heat transfer coefficient. On the other hand, the expansion of the heating surface unit has a self-cleaning function, which can reduce smoke and dust. Deposition, blockage and wear on the heated surface, especially to slow down the wear, can ensure a reasonable service life of the heated surface.