The rolls are important components of rolling mill, used for making the metal experience plastic deformation under rolling force. The main types of rolls include work roll, intermediate roll, backup roll, etc. The fabrication processes of the rolls include forging, rough machining, conditioning, non-destructive inspection, finishing machining, quenching, and grinding, thus the rolls have the advantages of high surface hardness, excellent wear and heat resistance, and high accuracy; the crown surface profile of the roll is machined by precision roll grinder. The roll quench layer is deep and can be ground repeatedly to the limit size. The rolls are used for cold rolling and hot rolling of carbon steel, alloy steel, copper aluminum and stainless steel strip.
-- Roll diameter: Ø90~600mm
-- Barrel length: 350~1450mm
-- Barrel profile: micro-crowned (2mm) (roll diameter≤1100mm, total roll length≤2800mm)
-- Steel grades: cast iron (alloy ductile iron, high chromium iron); cast steel (alloy cast steel, high speed steel, high chromium steel); forged steel (alloy steel forgings, high speed steel, semi-steel)
-- Surface hardness: HS55~80 (roll for cold and hot rolling), journal hardness HS40~60
-- Work roll /backup roll: Ø90~600×350~1450/Ø350~600×400~1300