Finedd tube is a kind of heat exchange element. In order to improve the heat exchange efficiency, fins are usually added on the surface of the heat exchange tube to increase the external surface area (or internal surface area) of the heat exchange tube, so as to achieve the purpose of improving the heat exchange efficiency.
Embedded Fined tube/Embedded spiral Fined tube is to pre process a certain width and depth of spiral groove on the steel pipe, and then inlay the steel strip on the steel pipe on the lathe. In the winding process, due to a certain pre tightening force, the steel strip will be tightly clamped in the spiral groove, thus ensuring a certain contact area between the steel strip and the steel pipe. In order to prevent the steel strip from springback and falling off, both ends of the steel strip should be welded on the steel pipe. In order to facilitate inlay, there should be a certain side gap between the steel strip and the spiral groove. If the side gap is too small to form interference, the mosaic process is difficult to proceed smoothly. In addition, the wound steel strip always has a certain rebound, which makes the steel strip and the bottom surface of the spiral groove not well connected. The inlaid fin can be carried out on general equipment with low cost, but the process is complex and the production efficiency is low.