The main chemical components of aluminum alloy are Al, Mg, Si, and other impurities such as Fe and Cu. The weight ratio of Mg to Si should be controlled between 113-115 to achieve excellent corrosion resistance and good toughness and strength. If the Si content in the alloy increases, the corrosion resistance of the alloy decreases, making it prone to corrosion. Similarly, if the Fe content in the alloy exceeds the standard, it will also reduce the corrosion resistance of the alloy.
Therefore, when using aluminum profile radiators, the following aspects should be prevented and improved:
What should be noted when using profile radiators?
1. The medium, temperature, and pressure inside the pipe should meet the design conditions, and overpressure and overheating operations are strictly prohibited.
2. When increasing pressure and temperature inside the pipe, it should be done gradually to avoid damage to the equipment due to thermal shock.
3. For tubular radiators operating under negative pressure, the vacuum pump should be turned on first. Once the specified vacuum level is reached, the fan can be started, and then the medium can be introduced into the pipe. When stopping, operate in the reverse order. In winter operations, after reaching the specified vacuum level with the vacuum pump, the medium should be introduced into the pipe first, and then the fan should be started to prevent freezing inside the pipe.
4. For easily condensable media during winter operations, the procedure is the opposite of point 3.
5. During normal operation of the aluminum profile radiator, the fan should be turned on first, and then the medium should be introduced into the pipe bundle. When stopping operations, the introduction of the medium into the pipe bundle should be stopped first, and then the fan should be turned off.