Designs for hot and cold rolled strip

Applying a gloss finish to stainless steel strip

The next stage after cold-rolling and recrystallization is skin-passing the stainless steel strip. This produces high-gloss surfaces and achieves the desired mechanical strip properties such as deep-drawing strength. Skin- passing is mainly performed on 2-high reversing mill stands. What’s evident today is that customers are increasingly choosing 4-high designs. You can also opt for a combined 2-high and 4-high stand solution. There are two versions to suit various plant configurations: inline skin-pass mills are integrated in the annealing and pickling line and/or the bright annealing line, while offline mills are installed downstream. To ensure a brilliant strip finish, the SPM features:

  • Hydraulic roll gap adjustment (AGC)
  • External bending for 2-high mills
  • Low-friction X-Roll® Oil Bearing
  • Automatic quick roll change device
  • Automatic paper feed
  • Oscillating roll polishing device
  • Innovative strip cleaning system
  • Strip/roll polishing devices with dedicated suction system
  • Anti-crimping rolls on the entry and exit sides
  • X-Shape flatness control in closed loop design 
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SPM in 2-high design for tempering stainless steel strip

Main technical data

MaterialsAISI 200, AISI 300, AISI
400
Strip width600 - 1,300 mm
Strip thickness0.3 - 4.0 mm
Rolling speedmax. 600 m/min.
Capacityapprox. 200,000 t/y