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Recoiling is a key part of the slitting process. Slit or trimmed metal is rewound immediately as it leaves the slitter in a high-speed, continuous process. Problems may arise from the slitting process which are not easily detectable once the steel has been recoiled.

After the metal has been uncoiled and slit or trimmed, it must be rewound if it is to be used as a smaller coil. These smaller coils are then packaged for shipping, so this may be the final time the surface is exposed before being sent to a customer.

Recoiling offers an opportunity for final inspection of the metal surface. This enables any defects introduced by the slitting process to be discovered. Recoiling is a high-speed process, so an automated system is essential. Storing images of the surface provides a record of the steel quality before dispatch.
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