Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
Most of the steel structure material is used in the space frame project, which is very likely to rust and corrode due to the influence of coating and natural environment. The following SAFS space frame manufacturers to answer the following
First, the impact of large space frame project corrosion reasons First of all, the aging of the coating of the space frame, no matter what kind of materials are basically aging characteristics, and this anti-corrosion coating is no exception, but also the aging of the coating makes the space frame accessories anti-corrosion coating failure, which makes rust affects the life. If the air around the steel structure plant is humid, it will make the steel structure rust gradually under the erosion of water and air. In addition, if the surrounding environment is more polluted, in which the polluted atmosphere has sulfide, nitride, carbide and other corrosive and harmful components content, etc., that will also affect the service life of the steel structure plant. Therefore, for the maintenance of the portal space frame project, you need to always pay attention to, it is best to plating a layer of film, while a period of time to be painted anti-corrosion paint, so that it can be used for a long time.
Second, the anti-corrosion measures of large space frame project
1, surface treatment: the surface treatment of the space frame is very important, the same paint, the same corrosive environment, the use of different space frame processing technology can extend the life of three to five times. The dirt and rust layer on the steel surface should be removed, especially the black oxide skin formed when rolling steel, which is the cathode of electrochemical corrosion and is the root cause of the corrosion of the space frame and must be removed. The quality of surface treatment should reach Sa2.5 level of steel surface pretreatment specification before painting.
2, material selection: the surface of the space frame material painted with special steel anti-corrosion paint, is still the main means of corrosion protection of the space frame, the space frame anti-corrosion coating according to the protection function can be divided into primer, mid-layer paint and top coat, each layer of paint has its own characteristics, each responsible for several layers combined to form a composite coating to improve anti-corrosion performance and extend the service life.
3, the space frame coating thickness: paint is the intermediate material for anti-corrosion, must be painted to form the space frame coating. If the coating thickness is uneven, the burr on the surface of the space frame steel or the peak of the anchor spinning will reveal the coating. If the coating construction times less, the coating has pinholes, the oxygen in the water, chloride ions, water molecules, etc. will pass through these weak places, so that the steel rust corrosion. Corrosion products volume expansion, the formation of rust package, gradually expand, and finally the coating blister off.
