SGP rolls are composed by nodular graphite and carbides arranged in a pearlitic matrix. We called SGP roll or Pearlitic Nodular Cast Iron Roll.
Pearlitic rolls composed by nodular graphite and carbides arranged in a peralitic matrix. It's properties are similar to Indefinite Chill except that the graphite structure is changed from flake to spheroidal forms. Pearlitic rolls will have higher strength than Indefinite Chill. Pearlitic roll can be produced by static casting (Monoblock) or by using the centrifugal cast (CC) Double-pour method.
Chemical Composition
|
Symbol |
C |
Si |
Mn |
Cr |
Ni |
Mo |
Mg |
|
SGPⅠ |
2.90-3.60 |
1.40-2.20 |
0.40-1.00 |
0.10-0.60 |
1.50-2.00 |
0.20-0.80 |
≥0.04 |
|
SGPⅡ |
2.90-3.60 |
1.20-2.00 |
0.40-1.00 |
0.20-1.00 |
2.01-2.50 |
0.20-0.80 |
≥0.04 |
|
SGPⅢ |
2.90-3.60 |
1.00-2.00 |
0.40-1.00 |
0.20-1.20 |
2.51-3.00 |
0.20-0.80 |
≥0.04 |
Physical Properties
|
Symbol |
Barrel Hardness |
Roll Neck |
Tensile Strength △ |
|
SGPⅠ |
45-55 HS |
35-55 HS |
≥350/450 MPa |
|
SGPⅡ |
55-65 HS |
35-55 HS |
≥350/450 MPa |
|
SGPⅢ |
62-72 HS |
35-55 HS |
≥350/450 MPa |
Recommended Applications
-Rolls for roughing stands of medium section mills, bar mills and wire mills.
-Roll for intermediate, finishing stands of bar mills.
-Roll for sleeves of universal stands.
