How to properly maintain and store silicon steel strip coils?

As an important raw material for core components of motors, transformers and various electrical equipment, the quality of silicon steel strip coils directly affects the performance and life of the final product. In order to ensure the good condition of silicon steel strip coils, correct maintenance and storage are particularly critical.
1. Brief description of the characteristics of silicon steel strip coils
Silicon steel strip coils have excellent magnetic and electrical properties, and the surface is usually specially treated, such as coating or oxide layer, to reduce eddy current loss and improve corrosion resistance. However, these coatings and the metal itself are sensitive to environmental factors and are susceptible to moisture, oxidation, mechanical damage, etc., resulting in performance degradation.
Therefore, reasonable storage and maintenance measures can not only prevent oxidation and corrosion of the material surface, but also avoid physical damage and extend service life.
2. Storage environment requirements for silicon steel strip coils
Dry ventilation
Silicon steel coils should be stored in a dry, well-ventilated warehouse to avoid humid environments. Excessive humidity will accelerate metal oxidation, cause surface rust, and affect magnetic properties. The ideal relative humidity is controlled between 50%-60%.
Temperature control
The warehouse temperature should be kept stable to avoid condensation caused by drastic temperature changes. Too high or too low temperature will affect the physical properties of the coil and the integrity of the coating.
Dust and pollution prevention
The storage environment should be kept clean to avoid dust, oil, acidic and alkaline gases and other pollutants adhering to the surface of silicon steel, which will accelerate the corrosion of the material.
Avoid direct sunlight
Long-term direct sunlight may cause aging and fading of the coating, so the coil should be stored in a light-proof area.
3. Storage method of silicon steel strip coils
Stable placement
Silicon steel strip coils should be placed horizontally on a clean pallet or wooden rack to avoid direct contact with the ground and reduce the risk of moisture. There should be gaps between the coils to facilitate air circulation.
Prevent mechanical damage
When stacking, pay attention to uniform load-bearing to avoid deformation or surface damage of the coil due to heavy pressure. When using a forklift or lifting equipment, avoid direct contact between the hook or fork arm and the edge of the coil to prevent scratches.
Covering protection
When storing, it can be covered with dustproof cloth or plastic film to prevent dust and debris from falling onto the surface of the coil, but the covering should be breathable to avoid moisture accumulation.
Clear labeling
Each roll of silicon steel coil should be marked with information such as specifications, batches, storage dates, etc. to facilitate inventory management and batch tracking to avoid misuse and confusion.
4. Daily maintenance and inspection points
Regular inspection
The silicon steel strip coils in stock should be inspected regularly, with a focus on whether there are rust spots, stains or coating damage on the surface. Any abnormalities should be handled in a timely manner.
Anti-rust treatment
If slight rust is found, professional rust inhibitors or fine cloth can be used to gently wipe the rust spots to prevent rust from spreading.
Keep dry
If the humidity in the warehouse environment is high, consider using dehumidification equipment to ensure the dryness and stability of the storage environment.
Reasonable storage and warehousing
The coils should be handled with care when entering and leaving the warehouse to avoid collision damage. The first-in-first-out principle ensures the freshness and order of use of the materials.
As a key electrical steel material, good maintenance and storage management of silicon steel strip coils not only protects the quality of the material itself, but also provides a guarantee for subsequent production processes. By controlling the humidity and temperature of the storage environment, scientifically placing and covering, regularly inspecting and anti-rusting, the service life of silicon steel coils can be maximized to ensure their best performance in the final product.