Материјал алуминијумских пераја, обично се односи на материјал од алуминијумске фолије, је метални материјал на бази алуминијума или легуре алуминијума. Материјал алуминијумских пераја може бити у облику ролне или фолије, у зависности од његове употребе и захтева обраде. Ваљани алуминијумски материјал обично има велику дебљину и погодан је за неке сцене које треба да издрже већи притисак или тежину, such as construction, аутомобили, machinery and other fields. Foil-shaped aluminum fin material is relatively thin and has excellent thermal conductivity and electromagnetic shielding properties, so it is often used in electronics, communications, aerospace and other fields.
Aluminum fins are most commonly used as integral components in heat exchangers, refrigeration, and automotive cooling systems that rely on aluminum fins to maximize heat transfer efficiency. The selection of aluminum alloys for these fins is critical due to specific requirements for strength, отпорност на корозију, топлотна проводљивост, and formability.
Aluminum is widely chosen for fins due to its excellent thermal conductivity, отпорност на корозију, lightness, and cost-effectiveness. In heat exchangers, aluminum fins enhance heat dissipation by increasing the surface area available for heat exchange. The choice of aluminum alloy depends on several factors
Топлотна проводљивост: High thermal conductivity ensures efficient heat transfer. Отпорност на корозију: Extends service life, especially in humid or chemically aggressive environments. Mechanical strength: Sufficient strength and durability are necessary to withstand mechanical stresses. Формабилити: The alloy must support thin foil production and complex shapes without cracking. Исплативост: In large-scale applications, economical options are often preferred.
There are several aluminum alloys commonly used for foil and fin applications. These alloys are primarily from the 1000, 3000, и 8000 серије:
Composition and Properties: Тхе 1000 series is nearly pure aluminum, with over 99% aluminum content. Alloys such as 1050, 1060, и 1100 are widely used for their excellent thermal and electrical conductivity. Advantages: High Thermal Conductivity: Nearly pure aluminum has excellent thermal conductivity, which is essential for efficient heat transfer. Corrosion Resistance: High purity ensures strong resistance to general corrosion. Формабилити: These alloys are extremely ductile and suitable for thin foils. Disadvantages: Low Strength: These alloys have low mechanical strength and are not suitable for high stress applications. Limited Wear Resistance: Pure aluminum is soft and susceptible to wear. Applications: 1000 series alloys are commonly used in air conditioners, radiators, and evaporators, which require high thermal efficiency and low strength.
Composition and Properties: Тхе 3000 series includes alloys such as 3003, 3102, и 3104, with manganese as the main alloying element. Advantages: Moderate Strength: Manganese improves mechanical properties compared to the 1000 серије. Corrosion Resistance: Excellent corrosion resistance, especially in humid or salty environments. Good Thermal Conductivity: Suitable thermal properties for most heat exchange systems. Disadvantages: Slightly Lower Thermal Conductivity: Slightly lower thermal conductivity compared to the 1000 series due to alloying elements. Higher Cost: The presence of alloying elements increases material cost. Applications: Commonly used in automotive heat exchangers, refrigeration systems, and air conditioning fins, where a balance between strength and conductivity is required.
Composition and Properties: 8000 серије легура (као што су 8011 и 8079) contain small amounts of iron and silicon. These alloys are often used for packaging and industrial foils, but can also be used in fin production. Advantages: Добра топлотна проводљивост: Additions of iron and silicon optimize conductivity and strength. Висока отпорност на корозију: Suitable for challenging environments. Excellent formability: Allows for production of extremely thin foils. Disadvantages: Moderate strength: These alloys are not as strong as the 3000 серије легура. Applications: Used in industrial heat exchangers and HVAC systems.
8011 aluminum alloy is a common choice for heat exchanger fin blanks, especially for air conditioners and refrigerators. It is an aluminum-iron-silicon alloy with good corrosion resistance and formability.
