These rolls are characterized by spherical graphite. Its mechanical properties are similar to that of alloy indefinite chilled rolls except that its strength is higher than the latter. They can be produced by static
Chemical Element %
|
Brand
|
C
|
Si
|
Mn
|
Cr
|
Ni
|
Mo
|
Mg
|
|
SG 1
|
3.00-3.60
|
1.00-2.50
|
0.40-1.00
|
0.20-0.60
|
＜0.30
|
0.20-0.60
|
≥ 0.04
|
|
SG 3
|
3.00-3.60
|
1.20-2.40
|
0.40-1.00
|
0.20-0.60
|
0.20-0.60
|
0.20-0.60
|
≥ 0.04
|
|
SG 4
|
3.00-3.60
|
1.20-2.40
|
0.40-1.00
|
0.20-0.60
|
0.50-1.00
|
0.20-0.60
|
≥ 0.04
|
|
SG 6
|
3.00-3.60
|
1.20-2.40
|
0.40-1.00
|
0.30-1.20
|
1.01-2.50
|
0.40-0.80
|
≥ 0.04
|
|
SGD 1
|
3.00-3.60
|
0.40-1.20
|
0.20-1.00
|
0.20-0.60
|
|
0.20-0.60
|
≥ 0.04
|
|
SGD 2
|
3.00-3.60
|
0.40-1.20
|
0.20-1.00
|
0.10-0.30
|
|
0.20-0.80
|
≥ 0.04
|
Properties and Application
|
Brand
|
Barrel Hardness(HS)
|
Tensile Strength(Mpa)
|
Bending Strength(Mpa)
|
Application
|
|
SG 1
|
40-55
|
≥ 300
|
500-700
|
Stick, wire, profiled bar cogging roll frame
|
|
SG 3
|
55-70
|
≥ 300
|
500-700
|
|
|
SG 4
|
60-70
|
≥ 300
|
600-800
|
Stick wire, profiled bar moderate and finishing mill frame, narrow steel strip finishing mill frame
|
|
SG 6
|
62-70
|
≥ 320
|
600-800
|
|
|
SHD 1
|
58-70
|
≥ 300
|
600-800
|
|
|
SHD 2
|
58-70
|
≥ 300
|
600-800
|