Slitting

Working principle:

One Umlauf Bridle:

One Umlauf Bridle arranged behind the slitting unit pulls the strip through the circular knives.

Two Umlauf Bridles:

A second Umlauf Bridle serves as a braking unit ahead of the recoiler.

Benefits:

Perfect cut edges:

• The strip is fed to the shears with an accuracy of + / - 1 mm.
• Due to the high strip back-tension, the circular knives operate at optimal speeds.
• The best cutting quality is achieved when the strip to be cut is under tension.

Uniform leveling:

• Only the Umlauf Bridle technology provides the possibility of leveling all strips of slit coils at the same time.
• All the strips of a slit coil are leveled with the same specific back-tension, i.e. shorter strips will be stretched.
• Thanks to the unique way of applying back-tension to the strip, leveling with Umlauf Bridles is as if each strip of a slit coil was running separately through a leveler.

Precise recoiling:

• Each strip of a slit coil is subjected to the same specific back-tension.
• The elastic coating of the chain cars compensates the differences in speed between the individual strips.
• Every strip is wound into straight-edged slit-strip coils of the same specific tightness.

Minimal non-productive times:

• Easy and quick threading
• No changing of felt
• Long intervals between replacement of the crawler tracks’ elastic coating

Minimal maintenance:

• Up to ten times longer service life of the slitting knives