Regarding the requirements for the surface of brass tubes, it is necessary to continue to study and summarize to improve the ability to deal with the surface of brass tubes. We can use solvents and emulsions to clean steel, and use them to remove dust, oil, etc., but there is no way to remove rusty substances and oxide scales with these things, so they only need to be used for anticorrosion. Can play a supporting role. We can use a wire brush to polish these things on them to remove rust and other substances on them.
Nowadays, many industries related to brass tubes have developed to a certain extent, especially the development of industries such as electric power and marine industry, so that high-precision brass tubes have more room for development. Brass tubes have a very good ability to resist corrosion and fracture, but if the force is too large, or when they come into contact with some corrosive substances, corrosion and fracture will still develop. There have also been cases where the brass tubes in the evacuation area of the condenser were broken. Some copper tubes were subjected to relatively large tensile stress. In addition, there was a large amount of ammonia in the evacuation area. After a certain period of time, the brass tubes were broken. , Stress corrosion became more and more severe, and eventually the copper pipe was broken and hungry. In recent years, during the eddy current inspection of the copper tubes used in the condenser, it was also found that some copper tubes had cracks on the steam side. Among them, many of them were brass tubes in the evacuation area, and the cracks were generally horizontal. Yes, but some of them are longitudinal, and some cracks are so small that it is difficult to find them during inspection, causing unnecessary damage. When the condenser equipment is not in use, because there is water inside, and the brass tube and the air cut are in direct contact, the corrosion ability of the equipment when it is not in use is much stronger than that during operation. If it is not used for more than three days, the water inside should be drained clean, and it should be coppered to keep it dry; if it is stopped for a short period of time, let the circulating pump continue to work to prevent the suspended matter in the circulating water from sinking. , Reduce the ability of the condenser to be corroded. By inspecting the condenser equipment, know the operation status of the equipment, standard records, and use the correct method to use and maintain the brass tube of the condenser.
Post time: Apr-06-2023