The main chemical components of aluminum alloy are Al, Mg, Si and other impurities such as Fe and Cu. The weight ratio of Mg and Si should be controlled between 113-115. At this time, excellent corrosion resistance and good toughness and toughness can be obtained. Strength, if the Si in the alloy increases, the corrosion resistance of the alloy decreases and corrosion is prone to occur. If the Fe content of the alloy exceeds the standard, the corrosion resistance of the alloy will also be reduced.

　　 Therefore, when using aluminum radiators, prevention and improvement should be made from the following aspects:

　　What should be paid attention to when using the profile radiator?

　　 1. The medium, temperature and pressure in the pipe should meet the design conditions, and overpressure and overtemperature operation are strictly prohibited.

　　 2. When the pressure in the tube is increased and the temperature is increased, it should be increased slowly step by step to avoid damage to the equipment due to shock and sudden heat.

　　3. When the tube radiator operated by negative pressure is turned on, the air extractor should be turned on first, and the fan should be started when the vacuum in the tube reaches the specified degree, and then the medium in the tube should be introduced. When it is stopped, follow the reverse procedure. In winter operation, after opening the air extractor to reach the specified vacuum, pass the medium in the pipe first, and then start the fan to avoid freezing in the pipe and unable to operate.

　　4. When the coagulable medium is operated in winter, the procedure is opposite to 3.

　　 5. When the aluminum radiator is in normal operation, the fan should be turned on first, and then the medium should be introduced into the tube bundle. When stopping the operation, first stop passing the medium into the tube bundle, and then stop the fan.

　　Improve the hot water heating system, adjust the relationship between the flow rate of the design working condition of the fixed pressure point and the flow rate of the makeup water to prevent the chip from being collapsed by the makeup. The PH value of the control heating system is between 8-10. In theory, aluminum radiator is a product with better corrosion resistance, because the PH value of boiler water is generally between 8-10, and aluminum alloy is at this value. It is in a purely protected state, and the life of the 112mm aluminum radiator without any anti-corrosion is more than 10 years. Ensure that the chemical composition of aluminum alloy raw materials meets national standards. Necessary internal anti-corrosion is required for the aluminum alloy radiator to form a passivation protective film to prevent direct contact with water and other media to avoid leakage and corrosion.

　　Through the above treatments, it can effectively prevent the leakage of aluminum radiator and improve the performance of aluminum radiator, so that this type of radiator can be widely used and promoted by the state and relevant departments.