HiCr Iron and HiCr steel rolls are having high Cr carbide content with a tempered martensitic bainitic matrix in the working shell. Centrifugally cast compound HiCr rolls are made of highly wear and fire crack resistant shell with nodular cast iron core. They provide very high thermal shock resistance, longer pass life and very good surface finish.
HiCr Iron rolls are ideal for roughing work rolls of HSM, plate mill work rolls, skin pass and cold rolling work rolls. Durability during longer run time, resistance to fire cracking and banding are advantages.
Hardness property is stable during whole life of these rolls. Hence, re-hardening or reconditioning is not required.
HiCr Steel rolls are used for reversing and continuous HSM roughing rolls, steckel mill rolls and plate mill rolls. Superior mechanical strength of HiCr steel rolls make them ideal for heavy duty rolling conditions.
Heat treatment at high temperatures modify the structure to obtain optimum mechanical and physical
properties
| MATERIAL |
CHEMISTRY |
BARREL HARDNESS |
| C |
Si |
Mn |
Cr |
Ni |
Mo |
V |
(HSD) |
| HiCr Iron |
2.60-3.20 |
0.40-1.20 |
0.30-1.20 |
16.0-22.0 |
1.00-2.00 |
1.00-3.00 |
≤1.5 |
70-85 |
High Chromium Cast steel roll is manufacturerdwith special process of triple casting and double duplex technology. High chromium cast steel roll is characterized by high nipping capability, high thermal resistance and high wear resistance.
| LONG PRODUCT (LP) MILL ROLLS |
| MILL TYPE |
ROLL TYPE |
ROLL GRADE |
| BAR MILL |
Roughing, Intermediate,Finishing |
Cast Steel, Adamite Steel, Nodular lron, HSSTC in ring roll form |
| WIRE ROD MILL |
Roughing,intermediate,Finishing, Finishing Block |
Cast Steel, Adamite Steel Nodular lron, HSSCemented Carbide |
| SECTION MILL |
Breakdown. RoughingIntermediate, Finishing |
Cast Steel, Adamite Steel, Graphitic SteelNodular lron |
| HEAVY SECTION MILL |
Breakdown,Roughing, Edger,Tandem, UF, UR, Straightening |
Cast Steel, Adamite Steel, Graphitic SteelHiCr lron, HiCr Steel, Forged Steel |
| FLAT PRODUCT (FP) MILL ROLLS |
| MILL TYPE |
ROLL TYPE |
ROLL GRADE |
| HSM, Plate |
Roughing WR |
Special Alloy Cast Steel, HiCrSteel SemiHSS |
| HSM |
Roughing & Finishing BUR |
Duplex Cast Steel, Forged Stee! |
| HSM |
F1-F4, F5-F7 WR |
Hi Cr lron, ICDP HSS |
| CSM |
Tandem, Reversible,Sendzimir WR |
Cr3, Cr4, Cr5 Forged Steel |
| CSM |
BUR |
Cr3, Cr4, Cr5 Forged Steel/Duplex Cast Steel |
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