With the rapid economic development, my country's copper resources have been unable to meet industrial demand. The consumption of copper in the home appliance industry is relatively large.The copper consumption of each split type air conditioner is about 5 kg, which is mainly used to manufacture the evaporator and condenser and the connecting part of the pipeline between the two, which accounts for about 15% to 20% of the raw material cost of the air conditioner. The shortage of copper resources, rising prices and fierce competition in the air-conditioning industry have led to rising costs and falling profits. Aluminum is about 14600 yuan per ton, and copper is about 50,000 yuan per ton, which is about three times that of aluminum. The density of aluminum is 2.7 g/cm3 and the density of copper is 8.9 g/cm3. All-aluminum heat exchangers and copper-aluminum connecting pipes are expected to reduce the cost of air conditioners by more than 25%. Therefore, the application of aluminum alloy materials to the two devices and connecting pipelines has become an important direction for reducing the production cost of air conditioners. In the air-conditioning industry, the aluminum air conditioning pipe material of the tube-fin aluminum tube heat exchanger is generally 3 series Al Mn alloy, but the ordinary 3003 material has low anti-corrosion performance and is prone to pitting failure. Therefore, in order to improve its anti-corrosion performance, it is based on this many aluminum air conditioning pipe manufacturers have developed 3003 Zn, 3026 aluminum profiles, 3 kinds of aluminum alloy tubes.
Aluminum air conditioning pipe
Ordinary 3003 aluminum alloy, the main alloying elements Mn and Fe3003 Zn Ordinary 3003 aluminum alloy surface hot spray zinc layer, improve the corrosion resistance of aluminum alloy 3026 long-life aluminum alloy, low impurity element content, excellent corrosion resistance
This article studies the application of aluminum alloy materials in heat exchangers. Corrosion resistance is a key factor in determining whether to replace copper. Therefore, in this article, a series of comparative test tests are made for the above three different alloy materials of aluminum air conditioning pipe, and the aluminum alloy materials with strong corrosion resistance are given.
