Tension levelling lines

Tension levelling, also called ABT, is a levelling process consisting of a combination of stretching (flange rolls) and bending of the material (overlapping on the levelling rolls). It is the combination of these two processes that differentiates tension levelling from so-called “multi-roll” levelling, resulting in higher levels of plasticisation. With multi-roll levellers, plastification ratios of 80% of the thickness can be achieved, while the ABT is used to plasticise the entire thickness of the sheet. As such, the main benefits of our tension levelling lines are as follows:

• Perfect flatness
• Increase malleability
• Improve surface finish

The main characteristics of these lines are as follows:

• Specially designed back-up rolls and thrust bearings.
• Weld passing sequences.
• Quick changing device for work rolls.
• Automatic adjustment of elongation.
• Automatic control of intermeshes.
• A very efficient tension leveller equipment with 2 levelling units, enabling:
• Increased efficiency of flatness correction.
• Improved flatness, especially for strip with high yield point.
• It is possible to run using one unit while the second is undergoing maintenance.
• Crossbow and coilset correction by specific flexion unit.