The main reasons for the damage of hot-dip galvanized steel grating are:
1. Under the action of temperature difference, cracking and warping of components or connections are caused;
2. Due to corrosion of chemical substances and electrochemical corrosion, the cross-section of hot-dip galvanized steel grating members is weakened, so it is recommended to use surface treatment; 5 Others include hot-dip galvanized steel grating design and layout, hot-dip galvanized steel grating Production process, errors in hot-dip galvanized steel grating installation, illegal use and operation, etc.
3. Due to the change of load and long-term use, the change of the specifications of the hot-dip galvanized steel grating leads to the lack of structural bearing capacity;
4. Due to various unexpected deformations, distortions, depressions, etc. of the steel grating, the cross-section of the components is weakened, the rods are warped, and the joints are cracked;
After the hot-dip galvanized steel grating has been used for a long time, it will be damaged to a certain extent. The maintenance of outdoor hot-dip galvanized steel grating generally refers to anti-corrosion, anti-corrosion, fire prevention, etc. The service life of anti-rust paint has been limited, and galvanizing will be better, especially when the steel components are blocked and cannot be maintained. Galvanizing is divided into two types: electroplating and hot-dip galvanizing. The former is cheap, but the galvanized layer is thinner and the rust-proof life is short, but it is longer than the rust-proof paint; the latter is a good choice, with thicker hot-dip galvanized layer. The anti-rust effect is very good, but pay attention to the deformation of the components at a high temperature of 600 ° C, and the price is also expensive. The high-end price is aluminized zinc, and the anti-rust effect is also the best. Others include aluminized and galvanized aluminum, but they are not mainstream. So how to regulate the maintenance period? The protection period of galvanizing = the weight of the galvanized layer per square meter / the number of grams of corrosion per year. Although galvanizing is durable, we should pay attention not to be damaged during construction. If the hot-dip galvanized steel grating is too large to read, thermal spray aluminum or thermal spray zinc can be used. We must find these problems in time and deal with them properly.
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