Through advanced smelting, forging, and heat treatment processes, HANI’s forged steel rolls achieve a working layer with uniform high hardness, exceptional wear resistance, and superior accident resistance. Simultaneously, the roll neck and core are engineered to possess high strength and toughness.
Rolls and Rolling Mill
This unique combination of properties gives forged steel rolls irreplaceable advantages over cast rolls in cold rolling and non-ferrous metal rolling applications.
Based on usage conditions, forged steel rolls are categorized into hot forged steel rolls and cold forged steel rolls.
Forged steel hot rolling rolls are primarily used for hot rolling blanking and profile steel roughing mills, while forged steel cold rolling rolls are widely applied in cold rolling operations.
The requirements for forged steel cold rolling rolls are particularly demanding. The roll body surface must exhibit high and uniform hardness to ensure dimensional accuracy and superior surface quality of cold-rolled strips or plates. The roll body requires a specific depth of hardened layer and high accident resistance. Consequently, the requirements for the roll’s original structure are extremely strict, emphasizing both pure metallurgical quality and structural uniformity.
Currently, cold roll materials containing approximately 2% chromium are mainly used, achieving a working layer of about 10mm with hardness above HS90. For the newly developed Cr5 series cold rolls containing 5% chromium, the working layer above HS90 exceeds 30mm. The comprehensive superior performance of Cr5 series cold rolling work rolls will gradually replace traditionally used Cr2 series cold rolls, representing the future development direction for cold rolling work rolls. HANI specializes in producing these advanced forged steel rolls with precision engineering and quality assurance.
