From Coil to Coil
Bend-Levelling units in our Stretch-Bend-Levelling Lines are equipped with a 23 working roll levelling cassette which causes a homogenization of the internal material structures and therefore, a reduction of stress – due to the overlay of tension and bending stress. For the Tension-Levelling process, a bending unit, in conjunction with a 9-roll levelling unit, is used.
For levelling softer materials, such as aluminum alloys (for example series 1xxx), Ungerer Pure-Stretching Lines are applicable. Hereby, the material is stretched under high tension and with an adjustable, adaptive spreading roll, which is set to the strip unflatness, the material will be levelled.