Centrifugal Casting Definite Chilled Cast Iron Roll

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Centrifugal Casting Definite Chilled Cast Iron Roll

Definite chilled cast iron roll

The rolls exhibit improved mechanical properties due to presence of chilled surface structure and the change of pine-tree-like structure . The hardness and type of matrix of roll depend on conditions of application. The roll produced with centrifugal method basically eliminates the presence of graphite in its work layer while the core is made of nodular cast iron, increasing as a result, both the wear-resistant and breaking strength.

Centrifugal Casting Definite Chilled Cast Iron Roll

Mechanical properties

Hardness of shell               HSD65-85
Hardness of core               HSD35-48
Tensile Strength of core               ≥450MPa

Chemical properties

Material

Hardness (HSD)

C

Si

Mn

Ni

Cr

Mo

Chilled I

65-75

3.0/3.5

0.25/0.5

0.3/0.8

0.8/2.0

0.4/1.0

0.2/0.6

Chilled II

65-80

3.0/3.5

0.25/0.5

0.3/0.8

2.0/3.0

0.5/1.2

0.2/0.6

Chilled III

70-85

3.0/3.5

0.25/0.5

0.3/0.8

3.0/4.5

0.6/1.5

0.2/0.6

Application

For wire, bar and small section or light-duty material rod mills.