Alloy elements of Ni , Mn, Cr, Mo etc are added to bainitic nodular cast iron rolls for obtaining acicular(bainite-martensite)matrix in its microstructure of these rolls. Its strength and toughnes is higher than Perlitic Nodular Cast Iron Rolls, wearability is also better than latter. These rolls can be produced by static casting or centrifugal casting.
Chemical Element %
|
Brand
|
C
|
Si
|
Mn
|
Cr
|
Ni
|
Mo
|
|
SGB 1
|
3.00-3.50
|
1.40-2.40
|
0.20-0.80
|
≤ 0.50
|
2.50-3.50
|
0.40-1.00
|
|
SGB 2
|
3.00-3.50
|
1.20-2.00
|
0.20-0.80
|
0.20-1.00
|
3.00-4.50
|
0.40-1.00
|
Properties and Application
|
Brand
|
Barrel Hardness(HS)
|
Tensile Strength(Mpa)
|
Bending Strength(Mpa)
|
Application
|
|
SGB 1
|
55-70
|
≥ 400
|
600-800
|
Small profiled bar, stick, narrow steel finishing mill frame, high speed wire pre-finishing rolling
|
|
SGB 2
|
62-80
|
≥ 400
|
600-800
|