Tension Leveler Unit

The basic principle of strip shape righting: Make the strip extend moderately, when the external force disappears, the elastic deformation will return, and the plastic deformation will remain so that the deformation of the metal fiber eventually tends to be consistent, so as to correct the three-dimensional defects of the strip.  This extension is measured in terms of elongation. Operating the tension leveler is actually operating the elongation.

Tension leveler is composed of two inseparable parts, they are bridle roll unit and the host (we are often referred to as the tension leveler machine).  In order to correct the shape of the plate to the ideal state, the bridle rolls should be able to provide enough tension, and the tension leveler machine should be able to provide enough bending stress.  In order to provide sufficient tension, the bridle rolls must have the right diameter, right friction coefficient, right power system, but also the right initial tension.  The initial tension is provided by the equipment before and after the tension leveler unit.  So as to provide enough bending stress for the tension leveller, first of all, the frame and the roller cassettes should have enough stiffness and strength, and the quickly opening cylinder should have enough diameter, and the lifter should have enough tonnage.

Elongation is the goal of the tension leveler unit. The elongation is derived from the difference of the speed among the bridle rolls before and after the tension leveler (achieved by electronic control) and is directly related to the tension provided by the bridle roll, also is related to the wrap Angle of the work roll with the strip.