Process characteristics and applications of extruded aluminum finned tubes
- Material characteristics of extruded aluminum finned tubes
Extruded aluminum finned tubes are made of steel and aluminum, giving full play to the respective advantages of steel and aluminum. Steel has good mechanical properties and pressure-bearing capabilities, while aluminum has excellent thermal conductivity and is lightweight.
- Manufacturing process of extruded aluminum finned tubes
The manufacturing process of extruded aluminum finned tubes mainly includes base tube preparation, aluminum layer coating, fin forming and welding. First, the base pipe is pre-treated to ensure that the surface is smooth and flawless. Then, the aluminum layer is tightly wrapped on the outer surface of the base pipe using hot rolling or cold rolling technology. Next, the fins are manufactured through machining or mold forming techniques. Finally, advanced welding technology is used to firmly connect the fins to the base tube.
- Performance characteristics of extruded aluminum finned tubes
Thermal conductivity of extruded fin tubes: Due to the excellent thermal conductivity of aluminum, steel-aluminum composite fin tubes have high heat transfer efficiency and can quickly transfer heat from one side to the other.
Extruded fin tubes are lightweight and high-strength: The density of aluminum is small, making steel-aluminum composite fin tubes lightweight and high-strength, making them easy to install and transport.
Corrosion resistance of extruded finned tubes: Although the corrosion resistance of steel is not as good as stainless steel, the aluminum layer can play an anti-corrosion role to a certain extent, especially in the atmospheric environment. However, in corrosive media, the corrosion resistance of steel-aluminum composite finned tubes may be limited.
Economy of extruded fin tubes: Compared with stainless steel fin tubes, steel-aluminum composite fin tubes have lower manufacturing costs and therefore have better economics.
- Application areas of extruded aluminum finned tubes
Steel-aluminum composite finned tubes are widely used in civil and industrial fields such as automobile radiators, air-conditioning condensers, and air heaters. Due to its excellent thermal conductivity and light weight, it is especially suitable for occasions with high requirements on weight and heat transfer efficiency.
