20-high mill, North American Stainless (USA)

SMS group has supplied a 20-high cold rolling mill and a stainless steel bright-annealing line to North American Stainless (NAS).

The facilities have an annual capacity of 95,000 tons each of cold rolled and bright-annealed steel strip. So, NAS, a subsidiary of the Spanish Acerinox Group, has the most powerful plants in the U.S.A. producing such material. Immediately striking about the cold-rolled stainless steel strip with BA surface quality is the mirror finish.

The 20-high cold rolling mill is a MonoBlock mill, type MB 22B-54“, and processes hot strip thicknesses of up to 6.2 millimeters. The compact and robust plant comes with high mill stand rigidity. Featuring a maximum rolling speed of 800 meters per minute and a maximum rolling force of 8,000 kilonewtons, it can achieve thickness reductions of up to 90 percent. Auxiliary and ancillary equipment is also included in the scope of supplies. A regenerative SUPAFINE^® filter system makes sure the rolling oil is ecofriendly purified and cooled. Ecological plant operation is further supported by a fume exhaust system meeting most stringent environmental provisions of the local authorities. To reduce non-productive times, an uncoiling station, including flattener and crop shear, is integrated in addition to two reversing reels.