High Ni-Cr Indefinite Chill Casting Iron Roll
Model:HNiCr-1; HNiCr-2

Alloy Indefinite Chill Casting Iron Roll was made by centrifugal casting and heat treatment to achieve metallographic structure ofacicular bainite plus little martensite. Its hardness, toughness and wear resistance is much better than that of alloy nodular cast roll. Since it’s made in centrifugal casting method, the center body is nodular casting. The roll’s strength was improved lot. Suitable for medium, finish stands of small section steel mill, bar and wire mill, wide strip steel mill.

Chemical Composition: ( % )

Code C Si Mn Cr Ni Mo
HNiCr-1 2.8-3.5 0.6-1.1 0.4-1.1 1.6-2.0 3.9-4.3 0.2-0.8
HNiCr-2 3.0-3.5 0.7-1.2 0.5-1.2 1.4-1.8 3.6-4.2 0.2-0.8

 Physical Features:

Code Hardness(HS) Tensile Strength (MPa) Bending Strength (HS) Impact Toughness x104J/m2 Tensile Modules of Elasticity (kMPa)
HNiCr-1 70-85 350-450 450-650 3-7 150-190
HNiCr-2 60-75 350-450 450-650 4-7 150-190
Hui Core 35-50 190 350 3-7 110-150
Qiu Core 35-50 350 550 4-7 160-190

Applications:
Posterior segment working rolls of hot strip tandem mill
Working rolls of roughing stand and finish stand for wide strip, plate rolling mill
Working roll, backup roll, transverse cutting straightening roll
Working roll of steckel mill
Ring of pre-finish stand of high speed wire rod rolling mill
Working rolls of nonferrous metal plate mill

Available Manufacturing Roll Range:

Manufacturing Method Barrel Dia. (mm) Barrel Length (mm) Net Weight (ton)
Centrifugal Casting Φ280-900 400-1500 8
Overflow Casting Φ800-1000 2000  


Graphite in working layer, 50x  
  HNiCr-1, matrix/working layer, 500x    
 HNiCr-2, Matrix/working layer, 500x