The hot-dip galvanized steel grating will be damaged after it has been used for a long time. In order to avoid damage to the hot-dip galvanized steel grating as much as possible, the maintenance of the steel grating should be done well at ordinary times. The maintenance of outdoor hot-dip galvanized steel grating generally refers to prevention, corrosion prevention, fire prevention, etc. The service life of antirust paint is always limited, and galvanizing will be better, especially when the steel member is closed and cannot be maintained. Galvanizing can be divided into two types: electroplating and hot plating. The former is cheap, but the zinc coating is thin, and the anti-rust life is short, but it is longer than the anti-rust paint life; The latter is a good choice. The hot-dip galvanized layer is thick, and the anti-rust effect is very good. However, pay attention to the deformation of components at 600 ℃, and the price is also expensive. The price is high-end, and the anti-rust effect is also * hao’s. Other products include aluminum plating and galvanized aluminum, but they are not mainstream. How to specify the maintenance period? Protection period of galvanizing=weight of zinc coating per square meter/annual corrosion grams. Although the galvanizing is durable, we should pay attention not to damage it during construction. If the hot-dip galvanized steel grating components are too large to read, we can use hot-spray aluminum or hot-spray zinc. We should find these problems in time and properly solve them. The main reasons for the damage of hot-dip galvanized steel grating are as follows: 1. The specification of hot-dip galvanized steel grating is changed due to the change of load, and the structural bearing capacity is insufficient; 2. Due to various unexpected deformation, distortion and depression of the steel grating, the section of the member is weakened, the member is warped, and the connection is cracked; 3. Cracking and warping of components or connections caused by temperature difference; 4. The section of hot-dip galvanized steel grating members is weakened due to corrosion caused by chemical substances and electrochemical corrosion, so surface treatment is recommended; 5 Others include the design and typesetting of hot-dip galvanized steel grating, the production process of hot-dip galvanized steel grating, the mistakes, illegal use and operation in the installation of hot-dip galvanized steel grating, etc.
Post time: Jan-11-2023