Steel grating, as an important component in industrial platforms, walkways, drainage ditches and other scenarios, its maintenance quality directly affects the safety and service life of use. A scientific maintenance system needs to be combined with material characteristics and usage environment, covering multiple aspects such as daily cleaning, regular inspections, and defect repair, in order to minimize losses and extend service life to the greatest extent possible.
Daily cleaning is the fundamental task of maintenance. For dust and sediment adhering to the surface, high-pressure water guns can be used for flushing. During flushing, attention should be paid to the direction of water flow being parallel to the grid grid to avoid deformation of the grid caused by the vertical impact of high-pressure water flow. If there is oil stains on the surface, neutral cleaning agents should be used in conjunction with a soft bristled brush for cleaning. It is strictly prohibited to use strong acid and alkali solvents, especially for hot-dip galvanized steel grilles. Corrosive liquids can damage the protective effect of the zinc layer. The cleaning cycle should be adjusted according to the ambient dust concentration. It is recommended that the industrial zone should at least once a week, and the outdoor grille should be cleaned of the sediment at the ponding after the rainstorm.
Regular inspections should focus on structural safety. Firstly, check the status of the solder joints to see if there is any detachment or virtual soldering. You can use a small hammer to lightly tap the solder joints and listen to the sound to judge. A clear sound indicates that the welding is firm, while a muffled sound may indicate a hidden danger. Next, observe the deformation of the grille and measure whether the diagonal deviation is within the allowable range. If local depressions or warping are found, special tools should be used to correct them in a timely manner to avoid stress concentration causing greater deformation. For bolted grilles, it is necessary to check the bolt torque once a month to prevent loosening and displacement of the grille. In addition, special attention should be paid to the damage condition of the galvanized layer or coating, and the location and area of the rust points should be recorded to provide a basis for subsequent repairs.
Targeted protective measures are particularly crucial in different environments. Steel grilles in humid environments need to strengthen ventilation and drainage to avoid long-term immersion in water. A guide groove can be installed below the grille to accelerate drainage. In acidic and alkaline corrosive environments, in addition to using corrosion-resistant materials, the surface needs to undergo anti-corrosion treatment once a year, using specialized anti-corrosion coatings. Before painting, rust must be thoroughly removed and rough surfaces polished to enhance adhesion. In vibration environments such as workshop workstations, it is necessary to regularly check the connection between the grille and the supporting structure, and add buffer pads to reduce resonance wear. Steel grilles in high-temperature environments should pay attention to the gap changes caused by thermal expansion, and reserve sufficient expansion and contraction space to prevent deformation and jamming.
Defect repair should follow the principle of timely and accurate repair. When the galvanized layer is found to be damaged, the corroded area should be cleaned first, sanded with sandpaper until the metal color is exposed, and then repaired with zinc rich primer and topcoat. For slightly deformed grilles, cold straightening method can be used for repair to avoid changes in material properties caused by high temperature heating. If severe cracks or extensive corrosion occur, it is necessary to evaluate whether it meets the scrap standard and cannot be forcibly repaired for continued use. After the repair is completed, the defect location, processing method, and time should be recorded, and a maintenance file should be established to provide data support for subsequent management.
The maintenance of steel grating should adhere to the concept of “prevention first, prevention and control combined”. Through systematic daily management and targeted environmental protection, it can not only ensure its structural safety but also significantly extend its service life.
