Q:What kind of environment can prevent white rust on galvanized sheets for automobiles?
A:Temperature: The storage environment temperature is recommended to be controlled at 10~30°C to avoid condensation on the surface of the board due to drastic temperature fluctuations.
Humidity: Relative humidity must be ≤50%, equipped with an industrial dehumidifier, air conditioning system or temperature and humidity sensor for real-time monitoring, and automatic alarm when humidity exceeds the standard.
Warehouses must be dust and oil-free, and floors and shelves must be cleaned regularly.
Keep air flowing to avoid moisture accumulation in enclosed spaces.
Q:How should galvanized sheets for automobiles be packaged to prevent white rust?
A:Use VCI gas phase anti-rust film or aluminum-plastic composite film to seal the package, and use slow-release anti-rust molecules to form a protective layer.
Place double desiccant (such as silica gel, activated carbon) in the package, at least 200g per cubic meter.
Check the package regularly for damage. If there is an opening, reseal it with anti-rust tape.
Q:What should be paid attention to when transporting galvanized steel for automobiles?
A:The transport vehicle is covered with a waterproof cloth and a humidity absorption card is placed inside to absorb the moisture generated during the journey.
Avoid transporting on rainy or high humidity days, and use a constant temperature container if necessary.
Use air bags or foam to fix the board to reduce friction damage caused by transportation vibration.
Q:Do galvanized sheets for automobiles need to be isolated from other materials during stacking?
A:Store in separate warehouses from copper, aluminum, stainless steel and other materials, with a distance of at least 1 meter to prevent galvanic corrosion.
Avoid storing in the same warehouse with rubber products (containing sulfur) and acidic and alkaline chemicals (such as batteries and detergents).
Q:How to prevent white rust in special environments?
A:Coastal/high salt fog areas:
Warehouses are equipped with salt fog filtration systems and VCI anti-rust paper is added to the board packaging.
The boards are subjected to closed passivation treatment (such as epoxy resin coating) before storage.
High temperature and high humidity season:
Turn on the dehumidification equipment in advance and pre-cool the panels to ambient temperature before storage to avoid condensation due to temperature difference.