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What is an extruded fin tube?

Extruded fin tube is an important heat exchange element with the advantages of high strength, high temperature resistance, 내식성, wear resistance, etc., and is widely used in various industrial equipment systems.

Definition and characteristics of extruded fin tube

Extruded fin tube uses a special extrusion process to tightly attach the fins to the base tube to form a structure with high efficiency in heat transfer. This fin tube has the characteristics of large heat transfer area, high heat transfer performance, 내식성, wear resistance, etc., which can significantly improve the heat exchange efficiency.

Working principle of extruded fin tube

The working principle of extruded fin tube is mainly based on its unique structure and manufacturing process. On the extruder, the pretreated material is fed into the extrusion die, and the die is designed with a cavity that matches the shape of the fin. When the material is subjected to a strong extrusion force in the die, its shape gradually changes, and it is finally extruded into a fin shape that matches the die cavity. After the fin is formed, it is assembled with the base tube to form a complete extruded fin tube. When the hot fluid flows in the tube, the cold fluid flows between the fins. Due to the presence of the fins, the heat transfer area outside the tube is greatly increased, so that the heat can be transferred to the fins more quickly, and then transferred to the cold fluid through the fins, thereby achieving efficient heat exchange.

Extruded fin tube manufacturing process

The manufacturing process of extruded fin tubes includes material preparation, extrusion molding, and assembly of fins and base tubes. In the material preparation stage, materials with good thermal conductivity and corrosion resistance, such as aluminum, copper or stainless steel, need to be selected. After precise cutting and pretreatment, these materials enter the extrusion molding stage. During the extrusion molding process, parameters such as extrusion force, temperature and speed need to be precisely controlled to ensure the dimensional accuracy and surface quality of the fins. After the fins are formed, they are assembled with the base tube to form a complete extruded fin tube.

Application field of extruded fin tubes

Extruded fin tubes are widely used in various industrial fields, especially in occasions where efficient heat transfer is required.

예를 들어:

‌ Petrochemical industry ‌: used in heating furnaces, heat exchangers and other equipment.

‌ Refrigeration industry ‌: used in evaporators, condensers and other equipment.

‌ Thermal power plant ‌: used in boiler water-cooled walls and other equipment.

‌ Wood, food, paper and other industries ‌: used in drying operations to provide uniform hot air and achieve efficient drying‌.