There are fine graphite among crystallize in working layer of alloy infinite chilled cast iron roll. The size, form and distribution of graphite are able to be controlled through chilling action and alloy content. Due to addition of Mn, Cr, Ni and Mo, the matrix is able to be changed from pearlite and bainite into martensite. In addition to a little of fine graphite, the anti-strip, thermal cracking resistance and wearable performance are improved, the hardness difference in working layer is much lower, applicable to medium rolling and finishing rolling rack for rod, wire materials and profile steel.
Chemical Composition
Mark
C
Si
Mn
Cr
Ni
Mo
IC Ⅰ
2.90-3.70
0.60-1.20
0.40-1.20
0.60-1.20
0.20-0.60
IC Ⅱ
2.90-3.70
0.60-1.20
0.40-1.20
0.70-1.20
0.50-1.00
0.20-0.60
IC Ⅲ
2.90-3.70
0.60-1.20
0.40-1.20
0.70-1.20
1.01-2.00
0.20-0.60
Performance and Application
Mark
Hardness(HS)
Tensile strength(Mpa)
Bending strength(Mpa)
Purpose
IC Ⅰ
58-70
≥160
300-400
Medium and finishing rolling rack for medium and light profile steel, rod materials