Advanced manufacturing technology of steel aluminum composite finned tube

2022-08-15

The steel aluminum composite Fin Tube is composed of composite aluminum fins outside the steel pipe. The fin thickness is 0.4 mm, with high heat dissipation efficiency and no falling off. The pipe diameter can be made according to customer requirements, from 16 to 32.

The manufacturing process of steel aluminum composite Finned Tube is advanced. It is made by rolling steel and aluminum tubes on a special machine tool, so that the steel base tube and aluminum fins are closely combined. It has the advantages of small thermal resistance, good heat transfer performance, high strength, small flow loss, Strong Corrosion Resistance and long service life.

The heat transfer performance of finned tube radiator decays with the extension of service time. During the installation and commissioning of finned tube radiator, the design effect was not achieved, and the pipeline stroke connection was correct, and the insulation measures were ideal. The flow on the hot side of the pipe is too low, and the main symptom is the large temperature difference between the inlet and outlet of the hot side.

Check whether the dirt in the pipe is serious. The thermal resistance of 1mm dirt is ≈ 50mm steel plate. Check whether the fins are collapsed or loose, especially the steel tube aluminum wound finned tube. Clean the dust or dust on the fin surface in time. Remove the excess gas in the pipe to ensure the normal operation of the drain valve. If it is not the installation reason, it cannot be ruled out that it is the design and manufacturing reason of finned tube radiator.

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