ALLOYED INDEFINITE CHILL ROLLS (AIC)

Characteristics : Alloyed Indefinite Chill Rolls (AIC) have a matrix structure which varies from fine pearlitic to bainitic martensitic depending on the alloy addition. The desired hardness is achieved by changing the carbide to graphite balance with the help of the chemical composition. Also, due to alloy addition, these rolls have a much better hardness penetration than clear chill and other cast iron rolls. Alloyed Indefinite Chill Rolls (AIC) are highly suitable for products where surface finish is very critical. Wide range of hardness/composition for a variety of applications is available to suit a particular mill stand. Applications : These Rolls are suitable for Intermediate/Finishing Stands of TMT Re-Bar and Wire Rod Mills, Merchant Mills and Structural Mills. Finishing Stands of Strip and Flat Rolling Mills. Common Grades: AIC 57 (55° - 60° Sh C) AIC 63 (60° - 65° Sh C) AIC 67 (65° - 70° Sh C) AIC 73 (70° - 75° Sh C) SPECIAL GRADES: SPIC (70° - 80° Sh C) Mechanical Properties: Tensile Strength : 200-300 N/mm2 Bending Strength: 1-1.8 J/cm2

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