1. Daily cleaning and surface maintenance
Regular cleaning
Use low pH neutral detergent (dilution ratio ≤5%) to wipe the surface to avoid corrosive solvent residue; rinse thoroughly after cleaning to prevent detergent residue from damaging the oxide film.
Use soft cotton cloth or special cleaning tools to avoid hard materials scratching the surface (especially for fluorocarbon coating or patterned aluminum sheet).
Cleaning precautions
Avoid cleaning when the aluminum sheet temperature exceeds 40°C. Water evaporation too quickly at high temperature can easily cause the coating to shrink and crack;
The cleaning frequency is recommended to be 1-2 times a year, and it can be increased to once a quarter in highly polluted industrial areas or coastal areas.
2. Surface protection enhancement
Coating and passivation treatment
Preferably choose fluorocarbon coating or rare earth passivation process to improve salt spray corrosion resistance (such as fluorocarbon coated aluminum sheet The service life can reach more than 30 years);
Regularly check the integrity of the surface coating, and the local detached area needs to be promptly reapplied with special repair paint.
Acidic environment protection
Avoid long-term exposure to acidic environments (such as near chemical plants), and install sunshades or add sealant isolation;
In coastal areas, it is recommended to use zinc-magnesium-aluminum composite corrugated plates, and match them with anodizing treatment (salt spray resistance life increased by 50%).
3. Installation and structural maintenance
Installation specifications
Adopt the vertical lock edge process to ensure the sealing of the joints and reduce the corrosion risks caused by water seepage;
The contact between the metal frame and the aluminum plate needs to be coated with asphalt or special anti-corrosion glue to prevent electrochemical corrosion.
Regular inspection
Check the looseness of the connectors every year (especially after typhoons or earthquakes), and reinforce the bolts and sealants in time;
The drainage system needs to be kept unobstructed to prevent water from soaking the edges of the plates for a long time.
4, material selection optimization
Alloy and thickness selection
For outdoor high-corrosion environments, aluminum-magnesium-manganese alloys (such as 5754/3003) are preferred, with a thickness of ≥2.5mm (strong deformation resistance and service life extended by more than 30%);
For photovoltaic supporting scenarios, it is recommended to choose YX35-125-750 corrugated plate, with an effective width of 750mm, matching the span of photovoltaic brackets.
Recycling and reuse
The recycling rate of aluminum corrugated plate waste exceeds 95%. When replacing it regularly, recycled aluminum material can be preferred (performance is close to that of original aluminum, and the cost is reduced by 20%).
5, environmental adaptability management
Sand and gravel wear protection
The surface sand and dust should be cleaned regularly in deserts or windy and sandy areas to reduce the friction loss of particles on the coating;
Temporary protective nets can be added to the adjacent construction area to block splashing gravel.
Humidity control
Ventilation should be strengthened in humid environments (such as around reservoirs) to avoid direct contact between aluminum plates and hygroscopic materials such as wood;
When used in basements, a moisture-proof layer is required, and hollow heat-insulating corrugated plates are recommended.
Maintenance cycle recommendations
Annual routine inspection: cleaning, sealant repair, connector reinforcement;
Five-year deep maintenance: surface coating recoating, drainage system renovation
