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The galvanized serrated metal bar grating is mainly fixed by electric welding and anchor bolts

Oct 17, 2022

After the production of the galvanized serrated metal bar grating is delivered to the buyer for application, standard installation and fixing work must be carried out. The key points of grid plate installation are mainly fixed by electric welding and anchor bolts. The actual operation of secondary welding and welding to fix the galvanized bar grating will definitely cause damage to the hot-dip galvanized layer of the bar grating. At this stage, hot-dip galvanizing is a widely used anti-corrosion and anti-rust treatment method in the field of grid plates. It also has excellent utility for cathodic protection of pipelines, since the zinc layer creates a hermetic seal on the surface of the grid. If the zinc layer is accidentally scratched, the cathodic protection effect of the zinc layer itself can also keep the iron flat steel etched by the gas. The hot-dip galvanizing treatment can reasonably maintain the microcracks caused by the coiling and cold drawing of the plate and the zinc ablation area near the weld to prevent corrosion. Due to the existence of the zinc layer, the secondary electric welding of the grid plate must be difficult for the electric welding of the galvanized steel bar grating. Zinc has a melting point of about 420°C and a transpiration temperature of 908°C. This is unfortunate electric welding and soldering. When the arc is just burning, it evaporates. Evaporation and air zinc oxide can cause porosity, lack of soldering and cracks, and even compromise the reliability of electrical isolation. Among them, welding cracks, pores and welding tumors are the key problems when welding galvanized steel gratings. The zinc layer around the dissolution tank is oxidized to ZnO and evaporated under the action of electric isolation heat, producing very large dust. The main component of this kind of dust is ZnO, which has a great impact on the vocal organs of employees. Therefore, excellent natural ventilation countermeasures must be adopted during electric welding. Under the same welding standard, the amount of dust caused by silica welding wire is relatively low, while the amount of dust caused by low hydrogen welding wire is very large. Anti-slip treads are more widely used on the ground. This sheet is mainly made of toothed galvanized flat steel and is used for production processing. This kind of ladder step is used in wet and cold natural environment, and the installation plate can avoid the deviation during the whole process of walking. One side of the board is made of many zigzag galvanized flat steels by electric welding. Therefore, this kind of ladder tread has the advantages of ordinary thick steel bar grating. The board is also very powerful, and other things can be done. In order to have an anti-skid effect on the ground, it is suitable for installation and use on smooth roads, and is also widely used in service platforms of oil production plants.

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