Plain aluminum foil is the basic raw material for the production of air conditioner heat sinks. In recent years, the production of air conditioners has developed in the direction of high efficiency, energy saving and lightweight. The thickness of aluminum foil for air conditioners has been reduced from 0.12mm~0.15mm to 0.09mm~0.11mm. At the same time, as China has become a global air conditioner production base, there is a great demand for aluminum foil for air conditioners. 3102 plain aluminum foil has become an important material in the production of air conditioner heat sinks due to its lightweight, high thermal conductivity and durability.
3102 aluminum alloy foil:
| Material name | deformed aluminum and aluminum alloy |
| Alloy | 3102 |
| Temper | 3102-H18, 3102-H19, 3102-H22, 3102-H26 |
| Thickness | 0.08-0.20mm |
| Width | 40-1600mm |
| Length | C |
| ID | 76/152mm |
| Application | fin foil for heat exchangers such as household air conditioners, central air conditioners, car air conditioners, vending machines, etc., generally used to make condensers |
Features of 3102 aluminum foil for air conditioner heat sink:
1. Good thermal conductivity: 3102 aluminum alloy foil has excellent thermal conductivity, which can quickly transfer heat from refrigerant to surrounding air, improving the cooling and heating efficiency of air conditioners.
2. Excellent formability: It can be easily processed into complex shapes through processes such as stamping and rolling, ensuring high precision and surface quality of the heat sink, without cracks and wrinkles.
3. Moderate strength: The tensile strength is between 110-180MPa, which can withstand the external forces during the operation, transportation and installation of the air conditioner, ensuring the integrity of the heat sink structure.
4. Corrosion resistance: The surface of 3102 aluminum alloy can form an aluminum oxide protective film to resist moisture and corrosive substances, extend the service life of the heat sink, and ensure the stable operation of the air conditioner.
5. Beauty and lightness: Lightweight and smooth appearance, reduce costs and maintain long-term beauty.
6. Excellent processing performance: The material is flexible and easy to cut, bend and process into various shapes, suitable for large-scale industrial production.
The processing technology of 3102 deformed aluminum is as follows:
(1) batching (2) smelting and refining (3) continuous casting and rolling (4) finished product annealing (5) cold rolling (6) foil rolling (7) cleaning and drying (8) bending and straightening (9) inspection (10) packaging and storage
Quality requirements for 3102 aluminum foil for air conditioner heat sink:
1. Chemical composition requirements
Aluminum (Al): Residue
Silicon (Si): ≤0.40%
Iron (Fe): ≤0.7%
Copper (Cu): ≤0.10%
Manganese (Mn): 0.20%-0.40%
Zinc (Zn): ≤0.30%
Titanium (Ti): ≤0.10%
Other elements: Each ≤0.05%, total ≤0.15%
2. Appearance quality requirements
(1) The surface should be flat and clean, without corrosion, oxidation and other defects
(2) The roll end surface should be flat and clean, and the joints should be marked
(3) Edge clamping is not allowed, and the broken end mark is clear
3. Dimension specification requirements
(1) Thickness tolerance: ±0.002mm to ±0.004mm
(2) Width tolerance: ±1mm
(3) Inner diameter: φ152mm±2mm
(4) Outer diameter: 800mm to 1100mm
4. Mechanical performance requirements
(1) Good tensile strength, elongation, etc.
(2) The performance must be stable to ensure the reliability and durability of the heat sink