Steel-aluminum composite finned tube is a high-efficiency energy-saving heat transfer finned tube (referred to as high-finned tube).
In the process of forming a thin-walled tube, the excess metal material forms fins on the outer surface of the tube.
The height of the rolled fins is generally )-13mm; the distance between the fins is generally 2-3.5mm, and the thickness of the fins is generally . 0.2-0.5mm.
At the same time, this cold extrusion processing method can also roll the composite tube finned tube. Commonly used steel-aluminum composite finned tubes and their base tubes.
Carbon steel, stainless steel, copper, copper, etc. are used. The outer tube, that is, the outer tube of the extruded fin, is commonly used in aluminum tubes and copper tubes.
Steel-aluminum composite finned tubes have no thermal contact resistance and electrical corrosion because the fins and the tube wall are integrated, so it can improve and maintain stable heat transfer performance and prolong the service life of the finned tubes.
The finned tube rolled by the high-finned tube rolling machine has a tight connection between the fin and the base tube, and no brazing is required. The fin spacing, fin height, and fin thickness can be adjusted by adjusting the working status of the tube rolling machine.
Controlled, the rolled fins have a smooth surface, clear corrugations, and precise pitches. The heat exchangers assembled from them have been used by many power production enterprises and have good comprehensive economic performance.
In general, the steel-aluminum composite finned tube has relatively compact firing, small flow resistance, small thermal resistance, high heat transfer efficiency, small product volume, and high comprehensive performance.
The composite tube structure in the rolled finned tube is to cover the rolled finned tube outside the steel tube. This structure has the dual advantages of steel finned tubes and aluminum finned tubes.
It has been widely used in many fields in China. application.